drivers/net/ethernet/intel/i40e/i40e_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 /* ethtool support for i40e */
   5
   6 #include "i40e.h"
   7 #include "i40e_diag.h"
   8 #include "i40e_txrx_common.h"
   9
  10 /* ethtool statistics helpers */
  11
  12 /**
  13  * struct i40e_stats - definition for an ethtool statistic
  14  * @stat_string: statistic name to display in ethtool -S output
  15  * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
  16  * @stat_offset: offsetof() the stat from a base pointer
  17  *
  18  * This structure defines a statistic to be added to the ethtool stats buffer.
  19  * It defines a statistic as offset from a common base pointer. Stats should
  20  * be defined in constant arrays using the I40E_STAT macro, with every element
  21  * of the array using the same _type for calculating the sizeof_stat and
  22  * stat_offset.
  23  *
  24  * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
  25  * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
  26  * the i40e_add_ethtool_stat() helper function.
  27  *
  28  * The @stat_string is interpreted as a format string, allowing formatted
  29  * values to be inserted while looping over multiple structures for a given
  30  * statistics array. Thus, every statistic string in an array should have the
  31  * same type and number of format specifiers, to be formatted by variadic
  32  * arguments to the i40e_add_stat_string() helper function.
  33  **/
  34 struct i40e_stats {
  35         char stat_string[ETH_GSTRING_LEN];
  36         int sizeof_stat;
  37         int stat_offset;
  38 };
  39
  40 /* Helper macro to define an i40e_stat structure with proper size and type.
  41  * Use this when defining constant statistics arrays. Note that @_type expects
  42  * only a type name and is used multiple times.
  43  */
  44 #define I40E_STAT(_type, _name, _stat) { \
  45         .stat_string = _name, \
  46         .sizeof_stat = sizeof_field(_type, _stat), \
  47         .stat_offset = offsetof(_type, _stat) \
  48 }
  49
  50 /* Helper macro for defining some statistics directly copied from the netdev
  51  * stats structure.
  52  */
  53 #define I40E_NETDEV_STAT(_net_stat) \
  54         I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
  55
  56 /* Helper macro for defining some statistics related to queues */
  57 #define I40E_QUEUE_STAT(_name, _stat) \
  58         I40E_STAT(struct i40e_ring, _name, _stat)
  59
  60 /* Stats associated with a Tx or Rx ring */
  61 static const struct i40e_stats i40e_gstrings_queue_stats[] = {
  62         I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
  63         I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
  64 };
  65
  66 /**
  67  * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer
  68  * @data: location to store the stat value
  69  * @pointer: basis for where to copy from
  70  * @stat: the stat definition
  71  *
  72  * Copies the stat data defined by the pointer and stat structure pair into
  73  * the memory supplied as data. Used to implement i40e_add_ethtool_stats and
  74  * i40e_add_queue_stats. If the pointer is null, data will be zero'd.
  75  */
  76 static void
  77 i40e_add_one_ethtool_stat(u64 *data, void *pointer,
  78                           const struct i40e_stats *stat)
  79 {
  80         char *p;
  81
  82         if (!pointer) {
  83                 /* ensure that the ethtool data buffer is zero'd for any stats
  84                  * which don't have a valid pointer.
  85                  */
  86                 *data = 0;
  87                 return;
  88         }
  89
  90         p = (char *)pointer + stat->stat_offset;
  91         switch (stat->sizeof_stat) {
  92         case sizeof(u64):
  93                 *data = *((u64 *)p);
  94                 break;
  95         case sizeof(u32):
  96                 *data = *((u32 *)p);
  97                 break;
  98         case sizeof(u16):
  99                 *data = *((u16 *)p);
 100                 break;
 101         case sizeof(u8):
 102                 *data = *((u8 *)p);
 103                 break;
 104         default:
 105                 WARN_ONCE(1, "unexpected stat size for %s",
 106                           stat->stat_string);
 107                 *data = 0;
 108         }
 109 }
 110
 111 /**
 112  * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer
 113  * @data: ethtool stats buffer
 114  * @pointer: location to copy stats from
 115  * @stats: array of stats to copy
 116  * @size: the size of the stats definition
 117  *
 118  * Copy the stats defined by the stats array using the pointer as a base into
 119  * the data buffer supplied by ethtool. Updates the data pointer to point to
 120  * the next empty location for successive calls to __i40e_add_ethtool_stats.
 121  * If pointer is null, set the data values to zero and update the pointer to
 122  * skip these stats.
 123  **/
 124 static void
 125 __i40e_add_ethtool_stats(u64 **data, void *pointer,
 126                          const struct i40e_stats stats[],
 127                          const unsigned int size)
 128 {
 129         unsigned int i;
 130
 131         for (i = 0; i < size; i++)
 132                 i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
 133 }
 134
 135 /**
 136  * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
 137  * @data: ethtool stats buffer
 138  * @pointer: location where stats are stored
 139  * @stats: static const array of stat definitions
 140  *
 141  * Macro to ease the use of __i40e_add_ethtool_stats by taking a static
 142  * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
 143  * ensuring that we pass the size associated with the given stats array.
 144  *
 145  * The parameter @stats is evaluated twice, so parameters with side effects
 146  * should be avoided.
 147  **/
 148 #define i40e_add_ethtool_stats(data, pointer, stats) \
 149         __i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
 150
 151 /**
 152  * i40e_add_queue_stats - copy queue statistics into supplied buffer
 153  * @data: ethtool stats buffer
 154  * @ring: the ring to copy
 155  *
 156  * Queue statistics must be copied while protected by
 157  * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats.
 158  * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
 159  * ring pointer is null, zero out the queue stat values and update the data
 160  * pointer. Otherwise safely copy the stats from the ring into the supplied
 161  * buffer and update the data pointer when finished.
 162  *
 163  * This function expects to be called while under rcu_read_lock().
 164  **/
 165 static void
 166 i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
 167 {
 168         const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
 169         const struct i40e_stats *stats = i40e_gstrings_queue_stats;
 170         unsigned int start;
 171         unsigned int i;
 172
 173         /* To avoid invalid statistics values, ensure that we keep retrying
 174          * the copy until we get a consistent value according to
 175          * u64_stats_fetch_retry_irq. But first, make sure our ring is
 176          * non-null before attempting to access its syncp.
 177          */
 178         do {
 179                 start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp);
 180                 for (i = 0; i < size; i++) {
 181                         i40e_add_one_ethtool_stat(&(*data)[i], ring,
 182                                                   &stats[i]);
 183                 }
 184         } while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start));
 185
 186         /* Once we successfully copy the stats in, update the data pointer */
 187         *data += size;
 188 }
 189
 190 /**
 191  * __i40e_add_stat_strings - copy stat strings into ethtool buffer
 192  * @p: ethtool supplied buffer
 193  * @stats: stat definitions array
 194  * @size: size of the stats array
 195  *
 196  * Format and copy the strings described by stats into the buffer pointed at
 197  * by p.
 198  **/
 199 static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
 200                                     const unsigned int size, ...)
 201 {
 202         unsigned int i;
 203
 204         for (i = 0; i < size; i++) {
 205                 va_list args;
 206
 207                 va_start(args, size);
 208                 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
 209                 *p += ETH_GSTRING_LEN;
 210                 va_end(args);
 211         }
 212 }
 213
 214 /**
 215  * i40e_add_stat_strings - copy stat strings into ethtool buffer
 216  * @p: ethtool supplied buffer
 217  * @stats: stat definitions array
 218  *
 219  * Format and copy the strings described by the const static stats value into
 220  * the buffer pointed at by p.
 221  *
 222  * The parameter @stats is evaluated twice, so parameters with side effects
 223  * should be avoided. Additionally, stats must be an array such that
 224  * ARRAY_SIZE can be called on it.
 225  **/
 226 #define i40e_add_stat_strings(p, stats, ...) \
 227         __i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
 228
 229 #define I40E_PF_STAT(_name, _stat) \
 230         I40E_STAT(struct i40e_pf, _name, _stat)
 231 #define I40E_VSI_STAT(_name, _stat) \
 232         I40E_STAT(struct i40e_vsi, _name, _stat)
 233 #define I40E_VEB_STAT(_name, _stat) \
 234         I40E_STAT(struct i40e_veb, _name, _stat)
 235 #define I40E_VEB_TC_STAT(_name, _stat) \
 236         I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat)
 237 #define I40E_PFC_STAT(_name, _stat) \
 238         I40E_STAT(struct i40e_pfc_stats, _name, _stat)
 239 #define I40E_QUEUE_STAT(_name, _stat) \
 240         I40E_STAT(struct i40e_ring, _name, _stat)
 241
 242 static const struct i40e_stats i40e_gstrings_net_stats[] = {
 243         I40E_NETDEV_STAT(rx_packets),
 244         I40E_NETDEV_STAT(tx_packets),
 245         I40E_NETDEV_STAT(rx_bytes),
 246         I40E_NETDEV_STAT(tx_bytes),
 247         I40E_NETDEV_STAT(rx_errors),
 248         I40E_NETDEV_STAT(tx_errors),
 249         I40E_NETDEV_STAT(rx_dropped),
 250         I40E_NETDEV_STAT(tx_dropped),
 251         I40E_NETDEV_STAT(collisions),
 252         I40E_NETDEV_STAT(rx_length_errors),
 253         I40E_NETDEV_STAT(rx_crc_errors),
 254 };
 255
 256 static const struct i40e_stats i40e_gstrings_veb_stats[] = {
 257         I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
 258         I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
 259         I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
 260         I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
 261         I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
 262         I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
 263         I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
 264         I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
 265         I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
 266         I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
 267         I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
 268         I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
 269 };
 270
 271 struct i40e_cp_veb_tc_stats {
 272         u64 tc_rx_packets;
 273         u64 tc_rx_bytes;
 274         u64 tc_tx_packets;
 275         u64 tc_tx_bytes;
 276 };
 277
 278 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
 279         I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets),
 280         I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes),
 281         I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets),
 282         I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes),
 283 };
 284
 285 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
 286         I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
 287         I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
 288         I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
 289         I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
 290         I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
 291         I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
 292         I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
 293         I40E_VSI_STAT("tx_linearize", tx_linearize),
 294         I40E_VSI_STAT("tx_force_wb", tx_force_wb),
 295         I40E_VSI_STAT("tx_busy", tx_busy),
 296         I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
 297         I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
 298 };
 299
 300 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
 301  * but they are separate.  This device supports Virtualization, and
 302  * as such might have several netdevs supporting VMDq and FCoE going
 303  * through a single port.  The NETDEV_STATs are for individual netdevs
 304  * seen at the top of the stack, and the PF_STATs are for the physical
 305  * function at the bottom of the stack hosting those netdevs.
 306  *
 307  * The PF_STATs are appended to the netdev stats only when ethtool -S
 308  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
 309  */
 310 static const struct i40e_stats i40e_gstrings_stats[] = {
 311         I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
 312         I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
 313         I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
 314         I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
 315         I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
 316         I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
 317         I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
 318         I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
 319         I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
 320         I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards),
 321         I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
 322         I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
 323         I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
 324         I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
 325         I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
 326         I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
 327         I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
 328         I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
 329         I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
 330         I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
 331         I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
 332         I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
 333         I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
 334         I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
 335         I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
 336         I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
 337         I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
 338         I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
 339         I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
 340         I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
 341         I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
 342         I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
 343         I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
 344         I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
 345         I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
 346         I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
 347         I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
 348         I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
 349         I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
 350         I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
 351         I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
 352         I40E_PF_STAT("port.arq_overflows", arq_overflows),
 353         I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
 354         I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 355         I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
 356         I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
 357         I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
 358         I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
 359         I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
 360         I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
 361         I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
 362
 363         /* LPI stats */
 364         I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
 365         I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
 366         I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
 367         I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
 368 };
 369
 370 struct i40e_pfc_stats {
 371         u64 priority_xon_rx;
 372         u64 priority_xoff_rx;
 373         u64 priority_xon_tx;
 374         u64 priority_xoff_tx;
 375         u64 priority_xon_2_xoff;
 376 };
 377
 378 static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
 379         I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
 380         I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
 381         I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
 382         I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
 383         I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
 384 };
 385
 386 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 387
 388 #define I40E_MISC_STATS_LEN     ARRAY_SIZE(i40e_gstrings_misc_stats)
 389
 390 #define I40E_VSI_STATS_LEN      (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
 391
 392 #define I40E_PFC_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
 393                                  I40E_MAX_USER_PRIORITY)
 394
 395 #define I40E_VEB_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_veb_stats) + \
 396                                  (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
 397                                   I40E_MAX_TRAFFIC_CLASS))
 398
 399 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 400
 401 #define I40E_PF_STATS_LEN       (I40E_GLOBAL_STATS_LEN + \
 402                                  I40E_PFC_STATS_LEN + \
 403                                  I40E_VEB_STATS_LEN + \
 404                                  I40E_VSI_STATS_LEN)
 405
 406 /* Length of stats for a single queue */
 407 #define I40E_QUEUE_STATS_LEN    ARRAY_SIZE(i40e_gstrings_queue_stats)
 408
 409 enum i40e_ethtool_test_id {
 410         I40E_ETH_TEST_REG = 0,
 411         I40E_ETH_TEST_EEPROM,
 412         I40E_ETH_TEST_INTR,
 413         I40E_ETH_TEST_LINK,
 414 };
 415
 416 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 417         "Register test  (offline)",
 418         "Eeprom test    (offline)",
 419         "Interrupt test (offline)",
 420         "Link test   (on/offline)"
 421 };
 422
 423 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 424
 425 struct i40e_priv_flags {
 426         char flag_string[ETH_GSTRING_LEN];
 427         u64 flag;
 428         bool read_only;
 429 };
 430
 431 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
 432         .flag_string = _name, \
 433         .flag = _flag, \
 434         .read_only = _read_only, \
 435 }
 436
 437 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
 438         /* NOTE: MFP setting cannot be changed */
 439         I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
 440         I40E_PRIV_FLAG("total-port-shutdown",
 441                        I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED, 1),
 442         I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
 443         I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
 444         I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
 445         I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
 446         I40E_PRIV_FLAG("link-down-on-close",
 447                        I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
 448         I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
 449         I40E_PRIV_FLAG("disable-source-pruning",
 450                        I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
 451         I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
 452         I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0),
 453         I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0),
 454 };
 455
 456 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
 457
 458 /* Private flags with a global effect, restricted to PF 0 */
 459 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
 460         I40E_PRIV_FLAG("vf-true-promisc-support",
 461                        I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
 462 };
 463
 464 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
 465
 466 /**
 467  * i40e_partition_setting_complaint - generic complaint for MFP restriction
 468  * @pf: the PF struct
 469  **/
 470 static void i40e_partition_setting_complaint(struct i40e_pf *pf)
 471 {
 472         dev_info(&pf->pdev->dev,
 473                  "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
 474 }
 475
 476 /**
 477  * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
 478  * @pf: PF struct with phy_types
 479  * @ks: ethtool link ksettings struct to fill out
 480  *
 481  **/
 482 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
 483                                      struct ethtool_link_ksettings *ks)
 484 {
 485         struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
 486         u64 phy_types = pf->hw.phy.phy_types;
 487
 488         ethtool_link_ksettings_zero_link_mode(ks, supported);
 489         ethtool_link_ksettings_zero_link_mode(ks, advertising);
 490
 491         if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
 492                 ethtool_link_ksettings_add_link_mode(ks, supported,
 493                                                      1000baseT_Full);
 494                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 495                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 496                                                              1000baseT_Full);
 497                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 498                         ethtool_link_ksettings_add_link_mode(ks, supported,
 499                                                              100baseT_Full);
 500                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 501                                                              100baseT_Full);
 502                 }
 503         }
 504         if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
 505             phy_types & I40E_CAP_PHY_TYPE_XFI ||
 506             phy_types & I40E_CAP_PHY_TYPE_SFI ||
 507             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
 508             phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
 509                 ethtool_link_ksettings_add_link_mode(ks, supported,
 510                                                      10000baseT_Full);
 511                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 512                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 513                                                              10000baseT_Full);
 514         }
 515         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
 516                 ethtool_link_ksettings_add_link_mode(ks, supported,
 517                                                      10000baseT_Full);
 518                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 519                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 520                                                              10000baseT_Full);
 521         }
 522         if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) {
 523                 ethtool_link_ksettings_add_link_mode(ks, supported,
 524                                                      2500baseT_Full);
 525                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
 526                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 527                                                              2500baseT_Full);
 528         }
 529         if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) {
 530                 ethtool_link_ksettings_add_link_mode(ks, supported,
 531                                                      5000baseT_Full);
 532                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
 533                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 534                                                              5000baseT_Full);
 535         }
 536         if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
 537             phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
 538             phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
 539                 ethtool_link_ksettings_add_link_mode(ks, supported,
 540                                                      40000baseCR4_Full);
 541         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 542             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
 543                 ethtool_link_ksettings_add_link_mode(ks, supported,
 544                                                      40000baseCR4_Full);
 545                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
 546                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 547                                                              40000baseCR4_Full);
 548         }
 549         if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 550                 ethtool_link_ksettings_add_link_mode(ks, supported,
 551                                                      100baseT_Full);
 552                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 553                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 554                                                              100baseT_Full);
 555         }
 556         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
 557                 ethtool_link_ksettings_add_link_mode(ks, supported,
 558                                                      1000baseT_Full);
 559                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 560                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 561                                                              1000baseT_Full);
 562         }
 563         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) {
 564                 ethtool_link_ksettings_add_link_mode(ks, supported,
 565                                                      40000baseSR4_Full);
 566                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 567                                                      40000baseSR4_Full);
 568         }
 569         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) {
 570                 ethtool_link_ksettings_add_link_mode(ks, supported,
 571                                                      40000baseLR4_Full);
 572                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 573                                                      40000baseLR4_Full);
 574         }
 575         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
 576                 ethtool_link_ksettings_add_link_mode(ks, supported,
 577                                                      40000baseKR4_Full);
 578                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 579                                                      40000baseKR4_Full);
 580         }
 581         if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
 582                 ethtool_link_ksettings_add_link_mode(ks, supported,
 583                                                      20000baseKR2_Full);
 584                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
 585                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 586                                                              20000baseKR2_Full);
 587         }
 588         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
 589                 ethtool_link_ksettings_add_link_mode(ks, supported,
 590                                                      10000baseKX4_Full);
 591                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 592                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 593                                                              10000baseKX4_Full);
 594         }
 595         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
 596             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 597                 ethtool_link_ksettings_add_link_mode(ks, supported,
 598                                                      10000baseKR_Full);
 599                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 600                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 601                                                              10000baseKR_Full);
 602         }
 603         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
 604             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 605                 ethtool_link_ksettings_add_link_mode(ks, supported,
 606                                                      1000baseKX_Full);
 607                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 608                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 609                                                              1000baseKX_Full);
 610         }
 611         /* need to add 25G PHY types */
 612         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
 613                 ethtool_link_ksettings_add_link_mode(ks, supported,
 614                                                      25000baseKR_Full);
 615                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 616                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 617                                                              25000baseKR_Full);
 618         }
 619         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
 620                 ethtool_link_ksettings_add_link_mode(ks, supported,
 621                                                      25000baseCR_Full);
 622                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 623                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 624                                                              25000baseCR_Full);
 625         }
 626         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 627             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
 628                 ethtool_link_ksettings_add_link_mode(ks, supported,
 629                                                      25000baseSR_Full);
 630                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 631                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 632                                                              25000baseSR_Full);
 633         }
 634         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
 635             phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
 636                 ethtool_link_ksettings_add_link_mode(ks, supported,
 637                                                      25000baseCR_Full);
 638                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 639                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 640                                                              25000baseCR_Full);
 641         }
 642         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 643             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 644             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 645             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
 646             phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
 647             phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
 648                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 649                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 650                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 651                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) {
 652                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 653                                                              FEC_NONE);
 654                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 655                                                              FEC_RS);
 656                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 657                                                              FEC_BASER);
 658                 }
 659         }
 660         /* need to add new 10G PHY types */
 661         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 662             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
 663                 ethtool_link_ksettings_add_link_mode(ks, supported,
 664                                                      10000baseCR_Full);
 665                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 666                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 667                                                              10000baseCR_Full);
 668         }
 669         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
 670                 ethtool_link_ksettings_add_link_mode(ks, supported,
 671                                                      10000baseSR_Full);
 672                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 673                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 674                                                              10000baseSR_Full);
 675         }
 676         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
 677                 ethtool_link_ksettings_add_link_mode(ks, supported,
 678                                                      10000baseLR_Full);
 679                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 680                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 681                                                              10000baseLR_Full);
 682         }
 683         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 684             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 685             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
 686                 ethtool_link_ksettings_add_link_mode(ks, supported,
 687                                                      1000baseX_Full);
 688                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 689                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 690                                                              1000baseX_Full);
 691         }
 692         /* Autoneg PHY types */
 693         if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
 694             phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
 695             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 696             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
 697             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 698             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
 699             phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 700             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 701             phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
 702             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
 703             phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
 704             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
 705             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
 706             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
 707             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 708             phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
 709             phy_types & I40E_CAP_PHY_TYPE_5GBASE_T ||
 710             phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T ||
 711             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
 712             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
 713             phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 714             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 715             phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
 716             phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 717                 ethtool_link_ksettings_add_link_mode(ks, supported,
 718                                                      Autoneg);
 719                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 720                                                      Autoneg);
 721         }
 722 }
 723
 724 /**
 725  * i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask
 726  * @req_fec_info: mask request FEC info
 727  * @ks: ethtool ksettings to fill in
 728  **/
 729 static void i40e_get_settings_link_up_fec(u8 req_fec_info,
 730                                           struct ethtool_link_ksettings *ks)
 731 {
 732         ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 733         ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 734         ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 735
 736         if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) &&
 737             (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) {
 738                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 739                                                      FEC_NONE);
 740                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 741                                                      FEC_BASER);
 742                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 743         } else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) {
 744                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 745         } else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) {
 746                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 747                                                      FEC_BASER);
 748         } else {
 749                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 750                                                      FEC_NONE);
 751         }
 752 }
 753
 754 /**
 755  * i40e_get_settings_link_up - Get the Link settings for when link is up
 756  * @hw: hw structure
 757  * @ks: ethtool ksettings to fill in
 758  * @netdev: network interface device structure
 759  * @pf: pointer to physical function struct
 760  **/
 761 static void i40e_get_settings_link_up(struct i40e_hw *hw,
 762                                       struct ethtool_link_ksettings *ks,
 763                                       struct net_device *netdev,
 764                                       struct i40e_pf *pf)
 765 {
 766         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 767         struct ethtool_link_ksettings cap_ksettings;
 768         u32 link_speed = hw_link_info->link_speed;
 769
 770         /* Initialize supported and advertised settings based on phy settings */
 771         switch (hw_link_info->phy_type) {
 772         case I40E_PHY_TYPE_40GBASE_CR4:
 773         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 774                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 775                 ethtool_link_ksettings_add_link_mode(ks, supported,
 776                                                      40000baseCR4_Full);
 777                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 778                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 779                                                      40000baseCR4_Full);
 780                 break;
 781         case I40E_PHY_TYPE_XLAUI:
 782         case I40E_PHY_TYPE_XLPPI:
 783         case I40E_PHY_TYPE_40GBASE_AOC:
 784                 ethtool_link_ksettings_add_link_mode(ks, supported,
 785                                                      40000baseCR4_Full);
 786                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 787                                                      40000baseCR4_Full);
 788                 break;
 789         case I40E_PHY_TYPE_40GBASE_SR4:
 790                 ethtool_link_ksettings_add_link_mode(ks, supported,
 791                                                      40000baseSR4_Full);
 792                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 793                                                      40000baseSR4_Full);
 794                 break;
 795         case I40E_PHY_TYPE_40GBASE_LR4:
 796                 ethtool_link_ksettings_add_link_mode(ks, supported,
 797                                                      40000baseLR4_Full);
 798                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 799                                                      40000baseLR4_Full);
 800                 break;
 801         case I40E_PHY_TYPE_25GBASE_SR:
 802         case I40E_PHY_TYPE_25GBASE_LR:
 803         case I40E_PHY_TYPE_10GBASE_SR:
 804         case I40E_PHY_TYPE_10GBASE_LR:
 805         case I40E_PHY_TYPE_1000BASE_SX:
 806         case I40E_PHY_TYPE_1000BASE_LX:
 807                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 808                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 809                 ethtool_link_ksettings_add_link_mode(ks, supported,
 810                                                      25000baseSR_Full);
 811                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 812                                                      25000baseSR_Full);
 813                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 814                 ethtool_link_ksettings_add_link_mode(ks, supported,
 815                                                      10000baseSR_Full);
 816                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 817                                                      10000baseSR_Full);
 818                 ethtool_link_ksettings_add_link_mode(ks, supported,
 819                                                      10000baseLR_Full);
 820                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 821                                                      10000baseLR_Full);
 822                 ethtool_link_ksettings_add_link_mode(ks, supported,
 823                                                      1000baseX_Full);
 824                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 825                                                      1000baseX_Full);
 826                 ethtool_link_ksettings_add_link_mode(ks, supported,
 827                                                      10000baseT_Full);
 828                 if (hw_link_info->module_type[2] &
 829                     I40E_MODULE_TYPE_1000BASE_SX ||
 830                     hw_link_info->module_type[2] &
 831                     I40E_MODULE_TYPE_1000BASE_LX) {
 832                         ethtool_link_ksettings_add_link_mode(ks, supported,
 833                                                              1000baseT_Full);
 834                         if (hw_link_info->requested_speeds &
 835                             I40E_LINK_SPEED_1GB)
 836                                 ethtool_link_ksettings_add_link_mode(
 837                                      ks, advertising, 1000baseT_Full);
 838                 }
 839                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 840                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 841                                                              10000baseT_Full);
 842                 break;
 843         case I40E_PHY_TYPE_10GBASE_T:
 844         case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS:
 845         case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS:
 846         case I40E_PHY_TYPE_1000BASE_T:
 847         case I40E_PHY_TYPE_100BASE_TX:
 848                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 849                 ethtool_link_ksettings_add_link_mode(ks, supported,
 850                                                      10000baseT_Full);
 851                 ethtool_link_ksettings_add_link_mode(ks, supported,
 852                                                      5000baseT_Full);
 853                 ethtool_link_ksettings_add_link_mode(ks, supported,
 854                                                      2500baseT_Full);
 855                 ethtool_link_ksettings_add_link_mode(ks, supported,
 856                                                      1000baseT_Full);
 857                 ethtool_link_ksettings_add_link_mode(ks, supported,
 858                                                      100baseT_Full);
 859                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 860                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 861                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 862                                                              10000baseT_Full);
 863                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
 864                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 865                                                              5000baseT_Full);
 866                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
 867                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 868                                                              2500baseT_Full);
 869                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 870                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 871                                                              1000baseT_Full);
 872                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 873                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 874                                                              100baseT_Full);
 875                 break;
 876         case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
 877                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 878                 ethtool_link_ksettings_add_link_mode(ks, supported,
 879                                                      1000baseT_Full);
 880                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 881                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 882                                                      1000baseT_Full);
 883                 break;
 884         case I40E_PHY_TYPE_10GBASE_CR1_CU:
 885         case I40E_PHY_TYPE_10GBASE_CR1:
 886                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 887                 ethtool_link_ksettings_add_link_mode(ks, supported,
 888                                                      10000baseT_Full);
 889                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 890                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 891                                                      10000baseT_Full);
 892                 break;
 893         case I40E_PHY_TYPE_XAUI:
 894         case I40E_PHY_TYPE_XFI:
 895         case I40E_PHY_TYPE_SFI:
 896         case I40E_PHY_TYPE_10GBASE_SFPP_CU:
 897         case I40E_PHY_TYPE_10GBASE_AOC:
 898                 ethtool_link_ksettings_add_link_mode(ks, supported,
 899                                                      10000baseT_Full);
 900                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 901                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 902                                                              10000baseT_Full);
 903                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 904                 break;
 905         case I40E_PHY_TYPE_SGMII:
 906                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 907                 ethtool_link_ksettings_add_link_mode(ks, supported,
 908                                                      1000baseT_Full);
 909                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 910                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 911                                                              1000baseT_Full);
 912                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 913                         ethtool_link_ksettings_add_link_mode(ks, supported,
 914                                                              100baseT_Full);
 915                         if (hw_link_info->requested_speeds &
 916                             I40E_LINK_SPEED_100MB)
 917                                 ethtool_link_ksettings_add_link_mode(
 918                                       ks, advertising, 100baseT_Full);
 919                 }
 920                 break;
 921         case I40E_PHY_TYPE_40GBASE_KR4:
 922         case I40E_PHY_TYPE_25GBASE_KR:
 923         case I40E_PHY_TYPE_20GBASE_KR2:
 924         case I40E_PHY_TYPE_10GBASE_KR:
 925         case I40E_PHY_TYPE_10GBASE_KX4:
 926         case I40E_PHY_TYPE_1000BASE_KX:
 927                 ethtool_link_ksettings_add_link_mode(ks, supported,
 928                                                      40000baseKR4_Full);
 929                 ethtool_link_ksettings_add_link_mode(ks, supported,
 930                                                      25000baseKR_Full);
 931                 ethtool_link_ksettings_add_link_mode(ks, supported,
 932                                                      20000baseKR2_Full);
 933                 ethtool_link_ksettings_add_link_mode(ks, supported,
 934                                                      10000baseKR_Full);
 935                 ethtool_link_ksettings_add_link_mode(ks, supported,
 936                                                      10000baseKX4_Full);
 937                 ethtool_link_ksettings_add_link_mode(ks, supported,
 938                                                      1000baseKX_Full);
 939                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 940                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 941                                                      40000baseKR4_Full);
 942                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 943                                                      25000baseKR_Full);
 944                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 945                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 946                                                      20000baseKR2_Full);
 947                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 948                                                      10000baseKR_Full);
 949                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 950                                                      10000baseKX4_Full);
 951                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 952                                                      1000baseKX_Full);
 953                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 954                 break;
 955         case I40E_PHY_TYPE_25GBASE_CR:
 956                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 957                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 958                 ethtool_link_ksettings_add_link_mode(ks, supported,
 959                                                      25000baseCR_Full);
 960                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 961                                                      25000baseCR_Full);
 962                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 963
 964                 break;
 965         case I40E_PHY_TYPE_25GBASE_AOC:
 966         case I40E_PHY_TYPE_25GBASE_ACC:
 967                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 968                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 969                 ethtool_link_ksettings_add_link_mode(ks, supported,
 970                                                      25000baseCR_Full);
 971                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 972                                                      25000baseCR_Full);
 973                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 974
 975                 ethtool_link_ksettings_add_link_mode(ks, supported,
 976                                                      10000baseCR_Full);
 977                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 978                                                      10000baseCR_Full);
 979                 break;
 980         default:
 981                 /* if we got here and link is up something bad is afoot */
 982                 netdev_info(netdev,
 983                             "WARNING: Link is up but PHY type 0x%x is not recognized.\n",
 984                             hw_link_info->phy_type);
 985         }
 986
 987         /* Now that we've worked out everything that could be supported by the
 988          * current PHY type, get what is supported by the NVM and intersect
 989          * them to get what is truly supported
 990          */
 991         memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
 992         i40e_phy_type_to_ethtool(pf, &cap_ksettings);
 993         ethtool_intersect_link_masks(ks, &cap_ksettings);
 994
 995         /* Set speed and duplex */
 996         switch (link_speed) {
 997         case I40E_LINK_SPEED_40GB:
 998                 ks->base.speed = SPEED_40000;
 999                 break;
1000         case I40E_LINK_SPEED_25GB:
1001                 ks->base.speed = SPEED_25000;
1002                 break;
1003         case I40E_LINK_SPEED_20GB:
1004                 ks->base.speed = SPEED_20000;
1005                 break;
1006         case I40E_LINK_SPEED_10GB:
1007                 ks->base.speed = SPEED_10000;
1008                 break;
1009         case I40E_LINK_SPEED_5GB:
1010                 ks->base.speed = SPEED_5000;
1011                 break;
1012         case I40E_LINK_SPEED_2_5GB:
1013                 ks->base.speed = SPEED_2500;
1014                 break;
1015         case I40E_LINK_SPEED_1GB:
1016                 ks->base.speed = SPEED_1000;
1017                 break;
1018         case I40E_LINK_SPEED_100MB:
1019                 ks->base.speed = SPEED_100;
1020                 break;
1021         default:
1022                 ks->base.speed = SPEED_UNKNOWN;
1023                 break;
1024         }
1025         ks->base.duplex = DUPLEX_FULL;
1026 }
1027
1028 /**
1029  * i40e_get_settings_link_down - Get the Link settings for when link is down
1030  * @hw: hw structure
1031  * @ks: ethtool ksettings to fill in
1032  * @pf: pointer to physical function struct
1033  *
1034  * Reports link settings that can be determined when link is down
1035  **/
1036 static void i40e_get_settings_link_down(struct i40e_hw *hw,
1037                                         struct ethtool_link_ksettings *ks,
1038                                         struct i40e_pf *pf)
1039 {
1040         /* link is down and the driver needs to fall back on
1041          * supported phy types to figure out what info to display
1042          */
1043         i40e_phy_type_to_ethtool(pf, ks);
1044
1045         /* With no link speed and duplex are unknown */
1046         ks->base.speed = SPEED_UNKNOWN;
1047         ks->base.duplex = DUPLEX_UNKNOWN;
1048 }
1049
1050 /**
1051  * i40e_get_link_ksettings - Get Link Speed and Duplex settings
1052  * @netdev: network interface device structure
1053  * @ks: ethtool ksettings
1054  *
1055  * Reports speed/duplex settings based on media_type
1056  **/
1057 static int i40e_get_link_ksettings(struct net_device *netdev,
1058                                    struct ethtool_link_ksettings *ks)
1059 {
1060         struct i40e_netdev_priv *np = netdev_priv(netdev);
1061         struct i40e_pf *pf = np->vsi->back;
1062         struct i40e_hw *hw = &pf->hw;
1063         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1064         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1065
1066         ethtool_link_ksettings_zero_link_mode(ks, supported);
1067         ethtool_link_ksettings_zero_link_mode(ks, advertising);
1068
1069         if (link_up)
1070                 i40e_get_settings_link_up(hw, ks, netdev, pf);
1071         else
1072                 i40e_get_settings_link_down(hw, ks, pf);
1073
1074         /* Now set the settings that don't rely on link being up/down */
1075         /* Set autoneg settings */
1076         ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1077                             AUTONEG_ENABLE : AUTONEG_DISABLE);
1078
1079         /* Set media type settings */
1080         switch (hw->phy.media_type) {
1081         case I40E_MEDIA_TYPE_BACKPLANE:
1082                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
1083                 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
1084                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
1085                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1086                                                      Backplane);
1087                 ks->base.port = PORT_NONE;
1088                 break;
1089         case I40E_MEDIA_TYPE_BASET:
1090                 ethtool_link_ksettings_add_link_mode(ks, supported, TP);
1091                 ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
1092                 ks->base.port = PORT_TP;
1093                 break;
1094         case I40E_MEDIA_TYPE_DA:
1095         case I40E_MEDIA_TYPE_CX4:
1096                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1097                 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1098                 ks->base.port = PORT_DA;
1099                 break;
1100         case I40E_MEDIA_TYPE_FIBER:
1101                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1102                 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1103                 ks->base.port = PORT_FIBRE;
1104                 break;
1105         case I40E_MEDIA_TYPE_UNKNOWN:
1106         default:
1107                 ks->base.port = PORT_OTHER;
1108                 break;
1109         }
1110
1111         /* Set flow control settings */
1112         ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
1113         ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause);
1114
1115         switch (hw->fc.requested_mode) {
1116         case I40E_FC_FULL:
1117                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1118                 break;
1119         case I40E_FC_TX_PAUSE:
1120                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1121                                                      Asym_Pause);
1122                 break;
1123         case I40E_FC_RX_PAUSE:
1124                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1125                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1126                                                      Asym_Pause);
1127                 break;
1128         default:
1129                 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
1130                 ethtool_link_ksettings_del_link_mode(ks, advertising,
1131                                                      Asym_Pause);
1132                 break;
1133         }
1134
1135         return 0;
1136 }
1137
1138 /**
1139  * i40e_set_link_ksettings - Set Speed and Duplex
1140  * @netdev: network interface device structure
1141  * @ks: ethtool ksettings
1142  *
1143  * Set speed/duplex per media_types advertised/forced
1144  **/
1145 static int i40e_set_link_ksettings(struct net_device *netdev,
1146                                    const struct ethtool_link_ksettings *ks)
1147 {
1148         struct i40e_netdev_priv *np = netdev_priv(netdev);
1149         struct i40e_aq_get_phy_abilities_resp abilities;
1150         struct ethtool_link_ksettings safe_ks;
1151         struct ethtool_link_ksettings copy_ks;
1152         struct i40e_aq_set_phy_config config;
1153         struct i40e_pf *pf = np->vsi->back;
1154         struct i40e_vsi *vsi = np->vsi;
1155         struct i40e_hw *hw = &pf->hw;
1156         bool autoneg_changed = false;
1157         i40e_status status = 0;
1158         int timeout = 50;
1159         int err = 0;
1160         u8 autoneg;
1161
1162         /* Changing port settings is not supported if this isn't the
1163          * port's controlling PF
1164          */
1165         if (hw->partition_id != 1) {
1166                 i40e_partition_setting_complaint(pf);
1167                 return -EOPNOTSUPP;
1168         }
1169         if (vsi != pf->vsi[pf->lan_vsi])
1170                 return -EOPNOTSUPP;
1171         if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
1172             hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
1173             hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
1174             hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
1175             hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
1176                 return -EOPNOTSUPP;
1177         if (hw->device_id == I40E_DEV_ID_KX_B ||
1178             hw->device_id == I40E_DEV_ID_KX_C ||
1179             hw->device_id == I40E_DEV_ID_20G_KR2 ||
1180             hw->device_id == I40E_DEV_ID_20G_KR2_A ||
1181             hw->device_id == I40E_DEV_ID_25G_B ||
1182             hw->device_id == I40E_DEV_ID_KX_X722) {
1183                 netdev_info(netdev, "Changing settings is not supported on backplane.\n");
1184                 return -EOPNOTSUPP;
1185         }
1186
1187         /* copy the ksettings to copy_ks to avoid modifying the origin */
1188         memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
1189
1190         /* save autoneg out of ksettings */
1191         autoneg = copy_ks.base.autoneg;
1192
1193         /* get our own copy of the bits to check against */
1194         memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
1195         safe_ks.base.cmd = copy_ks.base.cmd;
1196         safe_ks.base.link_mode_masks_nwords =
1197                 copy_ks.base.link_mode_masks_nwords;
1198         i40e_get_link_ksettings(netdev, &safe_ks);
1199
1200         /* Get link modes supported by hardware and check against modes
1201          * requested by the user.  Return an error if unsupported mode was set.
1202          */
1203         if (!bitmap_subset(copy_ks.link_modes.advertising,
1204                            safe_ks.link_modes.supported,
1205                            __ETHTOOL_LINK_MODE_MASK_NBITS))
1206                 return -EINVAL;
1207
1208         /* set autoneg back to what it currently is */
1209         copy_ks.base.autoneg = safe_ks.base.autoneg;
1210
1211         /* If copy_ks.base and safe_ks.base are not the same now, then they are
1212          * trying to set something that we do not support.
1213          */
1214         if (memcmp(&copy_ks.base, &safe_ks.base,
1215                    sizeof(struct ethtool_link_settings)))
1216                 return -EOPNOTSUPP;
1217
1218         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1219                 timeout--;
1220                 if (!timeout)
1221                         return -EBUSY;
1222                 usleep_range(1000, 2000);
1223         }
1224
1225         /* Get the current phy config */
1226         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1227                                               NULL);
1228         if (status) {
1229                 err = -EAGAIN;
1230                 goto done;
1231         }
1232
1233         /* Copy abilities to config in case autoneg is not
1234          * set below
1235          */
1236         memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
1237         config.abilities = abilities.abilities;
1238
1239         /* Check autoneg */
1240         if (autoneg == AUTONEG_ENABLE) {
1241                 /* If autoneg was not already enabled */
1242                 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
1243                         /* If autoneg is not supported, return error */
1244                         if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
1245                                                                    supported,
1246                                                                    Autoneg)) {
1247                                 netdev_info(netdev, "Autoneg not supported on this phy\n");
1248                                 err = -EINVAL;
1249                                 goto done;
1250                         }
1251                         /* Autoneg is allowed to change */
1252                         config.abilities = abilities.abilities |
1253                                            I40E_AQ_PHY_ENABLE_AN;
1254                         autoneg_changed = true;
1255                 }
1256         } else {
1257                 /* If autoneg is currently enabled */
1258                 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
1259                         /* If autoneg is supported 10GBASE_T is the only PHY
1260                          * that can disable it, so otherwise return error
1261                          */
1262                         if (ethtool_link_ksettings_test_link_mode(&safe_ks,
1263                                                                   supported,
1264                                                                   Autoneg) &&
1265                             hw->phy.media_type != I40E_MEDIA_TYPE_BASET) {
1266                                 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
1267                                 err = -EINVAL;
1268                                 goto done;
1269                         }
1270                         /* Autoneg is allowed to change */
1271                         config.abilities = abilities.abilities &
1272                                            ~I40E_AQ_PHY_ENABLE_AN;
1273                         autoneg_changed = true;
1274                 }
1275         }
1276
1277         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1278                                                   100baseT_Full))
1279                 config.link_speed |= I40E_LINK_SPEED_100MB;
1280         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1281                                                   1000baseT_Full) ||
1282             ethtool_link_ksettings_test_link_mode(ks, advertising,
1283                                                   1000baseX_Full) ||
1284             ethtool_link_ksettings_test_link_mode(ks, advertising,
1285                                                   1000baseKX_Full))
1286                 config.link_speed |= I40E_LINK_SPEED_1GB;
1287         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1288                                                   10000baseT_Full) ||
1289             ethtool_link_ksettings_test_link_mode(ks, advertising,
1290                                                   10000baseKX4_Full) ||
1291             ethtool_link_ksettings_test_link_mode(ks, advertising,
1292                                                   10000baseKR_Full) ||
1293             ethtool_link_ksettings_test_link_mode(ks, advertising,
1294                                                   10000baseCR_Full) ||
1295             ethtool_link_ksettings_test_link_mode(ks, advertising,
1296                                                   10000baseSR_Full) ||
1297             ethtool_link_ksettings_test_link_mode(ks, advertising,
1298                                                   10000baseLR_Full))
1299                 config.link_speed |= I40E_LINK_SPEED_10GB;
1300         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1301                                                   2500baseT_Full))
1302                 config.link_speed |= I40E_LINK_SPEED_2_5GB;
1303         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1304                                                   5000baseT_Full))
1305                 config.link_speed |= I40E_LINK_SPEED_5GB;
1306         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1307                                                   20000baseKR2_Full))
1308                 config.link_speed |= I40E_LINK_SPEED_20GB;
1309         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1310                                                   25000baseCR_Full) ||
1311             ethtool_link_ksettings_test_link_mode(ks, advertising,
1312                                                   25000baseKR_Full) ||
1313             ethtool_link_ksettings_test_link_mode(ks, advertising,
1314                                                   25000baseSR_Full))
1315                 config.link_speed |= I40E_LINK_SPEED_25GB;
1316         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1317                                                   40000baseKR4_Full) ||
1318             ethtool_link_ksettings_test_link_mode(ks, advertising,
1319                                                   40000baseCR4_Full) ||
1320             ethtool_link_ksettings_test_link_mode(ks, advertising,
1321                                                   40000baseSR4_Full) ||
1322             ethtool_link_ksettings_test_link_mode(ks, advertising,
1323                                                   40000baseLR4_Full))
1324                 config.link_speed |= I40E_LINK_SPEED_40GB;
1325
1326         /* If speed didn't get set, set it to what it currently is.
1327          * This is needed because if advertise is 0 (as it is when autoneg
1328          * is disabled) then speed won't get set.
1329          */
1330         if (!config.link_speed)
1331                 config.link_speed = abilities.link_speed;
1332         if (autoneg_changed || abilities.link_speed != config.link_speed) {
1333                 /* copy over the rest of the abilities */
1334                 config.phy_type = abilities.phy_type;
1335                 config.phy_type_ext = abilities.phy_type_ext;
1336                 config.eee_capability = abilities.eee_capability;
1337                 config.eeer = abilities.eeer_val;
1338                 config.low_power_ctrl = abilities.d3_lpan;
1339                 config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
1340                                     I40E_AQ_PHY_FEC_CONFIG_MASK;
1341
1342                 /* save the requested speeds */
1343                 hw->phy.link_info.requested_speeds = config.link_speed;
1344                 /* set link and auto negotiation so changes take effect */
1345                 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1346                 /* If link is up put link down */
1347                 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
1348                         /* Tell the OS link is going down, the link will go
1349                          * back up when fw says it is ready asynchronously
1350                          */
1351                         i40e_print_link_message(vsi, false);
1352                         netif_carrier_off(netdev);
1353                         netif_tx_stop_all_queues(netdev);
1354                 }
1355
1356                 /* make the aq call */
1357                 status = i40e_aq_set_phy_config(hw, &config, NULL);
1358                 if (status) {
1359                         netdev_info(netdev,
1360                                     "Set phy config failed, err %s aq_err %s\n",
1361                                     i40e_stat_str(hw, status),
1362                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1363                         err = -EAGAIN;
1364                         goto done;
1365                 }
1366
1367                 status = i40e_update_link_info(hw);
1368                 if (status)
1369                         netdev_dbg(netdev,
1370                                    "Updating link info failed with err %s aq_err %s\n",
1371                                    i40e_stat_str(hw, status),
1372                                    i40e_aq_str(hw, hw->aq.asq_last_status));
1373
1374         } else {
1375                 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
1376         }
1377
1378 done:
1379         clear_bit(__I40E_CONFIG_BUSY, pf->state);
1380
1381         return err;
1382 }
1383
1384 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg)
1385 {
1386         struct i40e_netdev_priv *np = netdev_priv(netdev);
1387         struct i40e_aq_get_phy_abilities_resp abilities;
1388         struct i40e_pf *pf = np->vsi->back;
1389         struct i40e_hw *hw = &pf->hw;
1390         i40e_status status = 0;
1391         u32 flags = 0;
1392         int err = 0;
1393
1394         flags = READ_ONCE(pf->flags);
1395         i40e_set_fec_in_flags(fec_cfg, &flags);
1396
1397         /* Get the current phy config */
1398         memset(&abilities, 0, sizeof(abilities));
1399         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1400                                               NULL);
1401         if (status) {
1402                 err = -EAGAIN;
1403                 goto done;
1404         }
1405
1406         if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) {
1407                 struct i40e_aq_set_phy_config config;
1408
1409                 memset(&config, 0, sizeof(config));
1410                 config.phy_type = abilities.phy_type;
1411                 config.abilities = abilities.abilities |
1412                                    I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1413                 config.phy_type_ext = abilities.phy_type_ext;
1414                 config.link_speed = abilities.link_speed;
1415                 config.eee_capability = abilities.eee_capability;
1416                 config.eeer = abilities.eeer_val;
1417                 config.low_power_ctrl = abilities.d3_lpan;
1418                 config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK;
1419                 status = i40e_aq_set_phy_config(hw, &config, NULL);
1420                 if (status) {
1421                         netdev_info(netdev,
1422                                     "Set phy config failed, err %s aq_err %s\n",
1423                                     i40e_stat_str(hw, status),
1424                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1425                         err = -EAGAIN;
1426                         goto done;
1427                 }
1428                 pf->flags = flags;
1429                 status = i40e_update_link_info(hw);
1430                 if (status)
1431                         /* debug level message only due to relation to the link
1432                          * itself rather than to the FEC settings
1433                          * (e.g. no physical connection etc.)
1434                          */
1435                         netdev_dbg(netdev,
1436                                    "Updating link info failed with err %s aq_err %s\n",
1437                                    i40e_stat_str(hw, status),
1438                                    i40e_aq_str(hw, hw->aq.asq_last_status));
1439         }
1440
1441 done:
1442         return err;
1443 }
1444
1445 static int i40e_get_fec_param(struct net_device *netdev,
1446                               struct ethtool_fecparam *fecparam)
1447 {
1448         struct i40e_netdev_priv *np = netdev_priv(netdev);
1449         struct i40e_aq_get_phy_abilities_resp abilities;
1450         struct i40e_pf *pf = np->vsi->back;
1451         struct i40e_hw *hw = &pf->hw;
1452         i40e_status status = 0;
1453         int err = 0;
1454         u8 fec_cfg;
1455
1456         /* Get the current phy config */
1457         memset(&abilities, 0, sizeof(abilities));
1458         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1459                                               NULL);
1460         if (status) {
1461                 err = -EAGAIN;
1462                 goto done;
1463         }
1464
1465         fecparam->fec = 0;
1466         fec_cfg = abilities.fec_cfg_curr_mod_ext_info;
1467         if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
1468                 fecparam->fec |= ETHTOOL_FEC_AUTO;
1469         else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS |
1470                  I40E_AQ_SET_FEC_ABILITY_RS))
1471                 fecparam->fec |= ETHTOOL_FEC_RS;
1472         else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR |
1473                  I40E_AQ_SET_FEC_ABILITY_KR))
1474                 fecparam->fec |= ETHTOOL_FEC_BASER;
1475         if (fec_cfg == 0)
1476                 fecparam->fec |= ETHTOOL_FEC_OFF;
1477
1478         if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA)
1479                 fecparam->active_fec = ETHTOOL_FEC_BASER;
1480         else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA)
1481                 fecparam->active_fec = ETHTOOL_FEC_RS;
1482         else
1483                 fecparam->active_fec = ETHTOOL_FEC_OFF;
1484 done:
1485         return err;
1486 }
1487
1488 static int i40e_set_fec_param(struct net_device *netdev,
1489                               struct ethtool_fecparam *fecparam)
1490 {
1491         struct i40e_netdev_priv *np = netdev_priv(netdev);
1492         struct i40e_pf *pf = np->vsi->back;
1493         struct i40e_hw *hw = &pf->hw;
1494         u8 fec_cfg = 0;
1495
1496         if (hw->device_id != I40E_DEV_ID_25G_SFP28 &&
1497             hw->device_id != I40E_DEV_ID_25G_B &&
1498             hw->device_id != I40E_DEV_ID_KX_X722)
1499                 return -EPERM;
1500
1501         if (hw->mac.type == I40E_MAC_X722 &&
1502             !(hw->flags & I40E_HW_FLAG_X722_FEC_REQUEST_CAPABLE)) {
1503                 netdev_err(netdev, "Setting FEC encoding not supported by firmware. Please update the NVM image.\n");
1504                 return -EOPNOTSUPP;
1505         }
1506
1507         switch (fecparam->fec) {
1508         case ETHTOOL_FEC_AUTO:
1509                 fec_cfg = I40E_AQ_SET_FEC_AUTO;
1510                 break;
1511         case ETHTOOL_FEC_RS:
1512                 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
1513                              I40E_AQ_SET_FEC_ABILITY_RS);
1514                 break;
1515         case ETHTOOL_FEC_BASER:
1516                 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
1517                              I40E_AQ_SET_FEC_ABILITY_KR);
1518                 break;
1519         case ETHTOOL_FEC_OFF:
1520         case ETHTOOL_FEC_NONE:
1521                 fec_cfg = 0;
1522                 break;
1523         default:
1524                 dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d",
1525                          fecparam->fec);
1526                 return -EINVAL;
1527         }
1528
1529         return i40e_set_fec_cfg(netdev, fec_cfg);
1530 }
1531
1532 static int i40e_nway_reset(struct net_device *netdev)
1533 {
1534         /* restart autonegotiation */
1535         struct i40e_netdev_priv *np = netdev_priv(netdev);
1536         struct i40e_pf *pf = np->vsi->back;
1537         struct i40e_hw *hw = &pf->hw;
1538         bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
1539         i40e_status ret = 0;
1540
1541         ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
1542         if (ret) {
1543                 netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
1544                             i40e_stat_str(hw, ret),
1545                             i40e_aq_str(hw, hw->aq.asq_last_status));
1546                 return -EIO;
1547         }
1548
1549         return 0;
1550 }
1551
1552 /**
1553  * i40e_get_pauseparam -  Get Flow Control status
1554  * @netdev: netdevice structure
1555  * @pause: buffer to return pause parameters
1556  *
1557  * Return tx/rx-pause status
1558  **/
1559 static void i40e_get_pauseparam(struct net_device *netdev,
1560                                 struct ethtool_pauseparam *pause)
1561 {
1562         struct i40e_netdev_priv *np = netdev_priv(netdev);
1563         struct i40e_pf *pf = np->vsi->back;
1564         struct i40e_hw *hw = &pf->hw;
1565         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1566         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1567
1568         pause->autoneg =
1569                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1570                   AUTONEG_ENABLE : AUTONEG_DISABLE);
1571
1572         /* PFC enabled so report LFC as off */
1573         if (dcbx_cfg->pfc.pfcenable) {
1574                 pause->rx_pause = 0;
1575                 pause->tx_pause = 0;
1576                 return;
1577         }
1578
1579         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
1580                 pause->rx_pause = 1;
1581         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
1582                 pause->tx_pause = 1;
1583         } else if (hw->fc.current_mode == I40E_FC_FULL) {
1584                 pause->rx_pause = 1;
1585                 pause->tx_pause = 1;
1586         }
1587 }
1588
1589 /**
1590  * i40e_set_pauseparam - Set Flow Control parameter
1591  * @netdev: network interface device structure
1592  * @pause: return tx/rx flow control status
1593  **/
1594 static int i40e_set_pauseparam(struct net_device *netdev,
1595                                struct ethtool_pauseparam *pause)
1596 {
1597         struct i40e_netdev_priv *np = netdev_priv(netdev);
1598         struct i40e_pf *pf = np->vsi->back;
1599         struct i40e_vsi *vsi = np->vsi;
1600         struct i40e_hw *hw = &pf->hw;
1601         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1602         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1603         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1604         i40e_status status;
1605         u8 aq_failures;
1606         int err = 0;
1607         u32 is_an;
1608
1609         /* Changing the port's flow control is not supported if this isn't the
1610          * port's controlling PF
1611          */
1612         if (hw->partition_id != 1) {
1613                 i40e_partition_setting_complaint(pf);
1614                 return -EOPNOTSUPP;
1615         }
1616
1617         if (vsi != pf->vsi[pf->lan_vsi])
1618                 return -EOPNOTSUPP;
1619
1620         is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
1621         if (pause->autoneg != is_an) {
1622                 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
1623                 return -EOPNOTSUPP;
1624         }
1625
1626         /* If we have link and don't have autoneg */
1627         if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
1628                 /* Send message that it might not necessarily work*/
1629                 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
1630         }
1631
1632         if (dcbx_cfg->pfc.pfcenable) {
1633                 netdev_info(netdev,
1634                             "Priority flow control enabled. Cannot set link flow control.\n");
1635                 return -EOPNOTSUPP;
1636         }
1637
1638         if (pause->rx_pause && pause->tx_pause)
1639                 hw->fc.requested_mode = I40E_FC_FULL;
1640         else if (pause->rx_pause && !pause->tx_pause)
1641                 hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1642         else if (!pause->rx_pause && pause->tx_pause)
1643                 hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1644         else if (!pause->rx_pause && !pause->tx_pause)
1645                 hw->fc.requested_mode = I40E_FC_NONE;
1646         else
1647                 return -EINVAL;
1648
1649         /* Tell the OS link is going down, the link will go back up when fw
1650          * says it is ready asynchronously
1651          */
1652         i40e_print_link_message(vsi, false);
1653         netif_carrier_off(netdev);
1654         netif_tx_stop_all_queues(netdev);
1655
1656         /* Set the fc mode and only restart an if link is up*/
1657         status = i40e_set_fc(hw, &aq_failures, link_up);
1658
1659         if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1660                 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
1661                             i40e_stat_str(hw, status),
1662                             i40e_aq_str(hw, hw->aq.asq_last_status));
1663                 err = -EAGAIN;
1664         }
1665         if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1666                 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
1667                             i40e_stat_str(hw, status),
1668                             i40e_aq_str(hw, hw->aq.asq_last_status));
1669                 err = -EAGAIN;
1670         }
1671         if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1672                 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
1673                             i40e_stat_str(hw, status),
1674                             i40e_aq_str(hw, hw->aq.asq_last_status));
1675                 err = -EAGAIN;
1676         }
1677
1678         if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1679                 /* Give it a little more time to try to come back */
1680                 msleep(75);
1681                 if (!test_bit(__I40E_DOWN, pf->state))
1682                         return i40e_nway_reset(netdev);
1683         }
1684
1685         return err;
1686 }
1687
1688 static u32 i40e_get_msglevel(struct net_device *netdev)
1689 {
1690         struct i40e_netdev_priv *np = netdev_priv(netdev);
1691         struct i40e_pf *pf = np->vsi->back;
1692         u32 debug_mask = pf->hw.debug_mask;
1693
1694         if (debug_mask)
1695                 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
1696
1697         return pf->msg_enable;
1698 }
1699
1700 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1701 {
1702         struct i40e_netdev_priv *np = netdev_priv(netdev);
1703         struct i40e_pf *pf = np->vsi->back;
1704
1705         if (I40E_DEBUG_USER & data)
1706                 pf->hw.debug_mask = data;
1707         else
1708                 pf->msg_enable = data;
1709 }
1710
1711 static int i40e_get_regs_len(struct net_device *netdev)
1712 {
1713         int reg_count = 0;
1714         int i;
1715
1716         for (i = 0; i40e_reg_list[i].offset != 0; i++)
1717                 reg_count += i40e_reg_list[i].elements;
1718
1719         return reg_count * sizeof(u32);
1720 }
1721
1722 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1723                           void *p)
1724 {
1725         struct i40e_netdev_priv *np = netdev_priv(netdev);
1726         struct i40e_pf *pf = np->vsi->back;
1727         struct i40e_hw *hw = &pf->hw;
1728         u32 *reg_buf = p;
1729         unsigned int i, j, ri;
1730         u32 reg;
1731
1732         /* Tell ethtool which driver-version-specific regs output we have.
1733          *
1734          * At some point, if we have ethtool doing special formatting of
1735          * this data, it will rely on this version number to know how to
1736          * interpret things.  Hence, this needs to be updated if/when the
1737          * diags register table is changed.
1738          */
1739         regs->version = 1;
1740
1741         /* loop through the diags reg table for what to print */
1742         ri = 0;
1743         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1744                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
1745                         reg = i40e_reg_list[i].offset
1746                                 + (j * i40e_reg_list[i].stride);
1747                         reg_buf[ri++] = rd32(hw, reg);
1748                 }
1749         }
1750
1751 }
1752
1753 static int i40e_get_eeprom(struct net_device *netdev,
1754                            struct ethtool_eeprom *eeprom, u8 *bytes)
1755 {
1756         struct i40e_netdev_priv *np = netdev_priv(netdev);
1757         struct i40e_hw *hw = &np->vsi->back->hw;
1758         struct i40e_pf *pf = np->vsi->back;
1759         int ret_val = 0, len, offset;
1760         u8 *eeprom_buff;
1761         u16 i, sectors;
1762         bool last;
1763         u32 magic;
1764
1765 #define I40E_NVM_SECTOR_SIZE  4096
1766         if (eeprom->len == 0)
1767                 return -EINVAL;
1768
1769         /* check for NVMUpdate access method */
1770         magic = hw->vendor_id | (hw->device_id << 16);
1771         if (eeprom->magic && eeprom->magic != magic) {
1772                 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1773                 int errno = 0;
1774
1775                 /* make sure it is the right magic for NVMUpdate */
1776                 if ((eeprom->magic >> 16) != hw->device_id)
1777                         errno = -EINVAL;
1778                 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1779                          test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1780                         errno = -EBUSY;
1781                 else
1782                         ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1783
1784                 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1785                         dev_info(&pf->pdev->dev,
1786                                  "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1787                                  ret_val, hw->aq.asq_last_status, errno,
1788                                  (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1789                                  cmd->offset, cmd->data_size);
1790
1791                 return errno;
1792         }
1793
1794         /* normal ethtool get_eeprom support */
1795         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1796
1797         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
1798         if (!eeprom_buff)
1799                 return -ENOMEM;
1800
1801         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1802         if (ret_val) {
1803                 dev_info(&pf->pdev->dev,
1804                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1805                          ret_val, hw->aq.asq_last_status);
1806                 goto free_buff;
1807         }
1808
1809         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1810         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1811         len = I40E_NVM_SECTOR_SIZE;
1812         last = false;
1813         for (i = 0; i < sectors; i++) {
1814                 if (i == (sectors - 1)) {
1815                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1816                         last = true;
1817                 }
1818                 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1819                 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1820                                 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1821                                 last, NULL);
1822                 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1823                         dev_info(&pf->pdev->dev,
1824                                  "read NVM failed, invalid offset 0x%x\n",
1825                                  offset);
1826                         break;
1827                 } else if (ret_val &&
1828                            hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1829                         dev_info(&pf->pdev->dev,
1830                                  "read NVM failed, access, offset 0x%x\n",
1831                                  offset);
1832                         break;
1833                 } else if (ret_val) {
1834                         dev_info(&pf->pdev->dev,
1835                                  "read NVM failed offset %d err=%d status=0x%x\n",
1836                                  offset, ret_val, hw->aq.asq_last_status);
1837                         break;
1838                 }
1839         }
1840
1841         i40e_release_nvm(hw);
1842         memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1843 free_buff:
1844         kfree(eeprom_buff);
1845         return ret_val;
1846 }
1847
1848 static int i40e_get_eeprom_len(struct net_device *netdev)
1849 {
1850         struct i40e_netdev_priv *np = netdev_priv(netdev);
1851         struct i40e_hw *hw = &np->vsi->back->hw;
1852         u32 val;
1853
1854 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1855         if (hw->mac.type == I40E_MAC_X722) {
1856                 val = X722_EEPROM_SCOPE_LIMIT + 1;
1857                 return val;
1858         }
1859         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1860                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1861                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1862         /* register returns value in power of 2, 64Kbyte chunks. */
1863         val = (64 * 1024) * BIT(val);
1864         return val;
1865 }
1866
1867 static int i40e_set_eeprom(struct net_device *netdev,
1868                            struct ethtool_eeprom *eeprom, u8 *bytes)
1869 {
1870         struct i40e_netdev_priv *np = netdev_priv(netdev);
1871         struct i40e_hw *hw = &np->vsi->back->hw;
1872         struct i40e_pf *pf = np->vsi->back;
1873         struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1874         int ret_val = 0;
1875         int errno = 0;
1876         u32 magic;
1877
1878         /* normal ethtool set_eeprom is not supported */
1879         magic = hw->vendor_id | (hw->device_id << 16);
1880         if (eeprom->magic == magic)
1881                 errno = -EOPNOTSUPP;
1882         /* check for NVMUpdate access method */
1883         else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1884                 errno = -EINVAL;
1885         else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1886                  test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1887                 errno = -EBUSY;
1888         else
1889                 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1890
1891         if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1892                 dev_info(&pf->pdev->dev,
1893                          "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1894                          ret_val, hw->aq.asq_last_status, errno,
1895                          (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1896                          cmd->offset, cmd->data_size);
1897
1898         return errno;
1899 }
1900
1901 static void i40e_get_drvinfo(struct net_device *netdev,
1902                              struct ethtool_drvinfo *drvinfo)
1903 {
1904         struct i40e_netdev_priv *np = netdev_priv(netdev);
1905         struct i40e_vsi *vsi = np->vsi;
1906         struct i40e_pf *pf = vsi->back;
1907
1908         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
1909         strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
1910                 sizeof(drvinfo->fw_version));
1911         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
1912                 sizeof(drvinfo->bus_info));
1913         drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1914         if (pf->hw.pf_id == 0)
1915                 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
1916 }
1917
1918 static void i40e_get_ringparam(struct net_device *netdev,
1919                                struct ethtool_ringparam *ring)
1920 {
1921         struct i40e_netdev_priv *np = netdev_priv(netdev);
1922         struct i40e_pf *pf = np->vsi->back;
1923         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
1924
1925         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1926         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1927         ring->rx_mini_max_pending = 0;
1928         ring->rx_jumbo_max_pending = 0;
1929         ring->rx_pending = vsi->rx_rings[0]->count;
1930         ring->tx_pending = vsi->tx_rings[0]->count;
1931         ring->rx_mini_pending = 0;
1932         ring->rx_jumbo_pending = 0;
1933 }
1934
1935 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
1936 {
1937         if (i40e_enabled_xdp_vsi(vsi)) {
1938                 return index < vsi->num_queue_pairs ||
1939                         (index >= vsi->alloc_queue_pairs &&
1940                          index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
1941         }
1942
1943         return index < vsi->num_queue_pairs;
1944 }
1945
1946 static int i40e_set_ringparam(struct net_device *netdev,
1947                               struct ethtool_ringparam *ring)
1948 {
1949         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
1950         struct i40e_netdev_priv *np = netdev_priv(netdev);
1951         struct i40e_hw *hw = &np->vsi->back->hw;
1952         struct i40e_vsi *vsi = np->vsi;
1953         struct i40e_pf *pf = vsi->back;
1954         u32 new_rx_count, new_tx_count;
1955         u16 tx_alloc_queue_pairs;
1956         int timeout = 50;
1957         int i, err = 0;
1958
1959         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
1960                 return -EINVAL;
1961
1962         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1963             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
1964             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1965             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
1966                 netdev_info(netdev,
1967                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
1968                             ring->tx_pending, ring->rx_pending,
1969                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
1970                 return -EINVAL;
1971         }
1972
1973         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1974         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1975
1976         /* if nothing to do return success */
1977         if ((new_tx_count == vsi->tx_rings[0]->count) &&
1978             (new_rx_count == vsi->rx_rings[0]->count))
1979                 return 0;
1980
1981         /* If there is a AF_XDP page pool attached to any of Rx rings,
1982          * disallow changing the number of descriptors -- regardless
1983          * if the netdev is running or not.
1984          */
1985         if (i40e_xsk_any_rx_ring_enabled(vsi))
1986                 return -EBUSY;
1987
1988         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1989                 timeout--;
1990                 if (!timeout)
1991                         return -EBUSY;
1992                 usleep_range(1000, 2000);
1993         }
1994
1995         if (!netif_running(vsi->netdev)) {
1996                 /* simple case - set for the next time the netdev is started */
1997                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1998                         vsi->tx_rings[i]->count = new_tx_count;
1999                         vsi->rx_rings[i]->count = new_rx_count;
2000                         if (i40e_enabled_xdp_vsi(vsi))
2001                                 vsi->xdp_rings[i]->count = new_tx_count;
2002                 }
2003                 vsi->num_tx_desc = new_tx_count;
2004                 vsi->num_rx_desc = new_rx_count;
2005                 goto done;
2006         }
2007
2008         /* We can't just free everything and then setup again,
2009          * because the ISRs in MSI-X mode get passed pointers
2010          * to the Tx and Rx ring structs.
2011          */
2012
2013         /* alloc updated Tx and XDP Tx resources */
2014         tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
2015                                (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
2016         if (new_tx_count != vsi->tx_rings[0]->count) {
2017                 netdev_info(netdev,
2018                             "Changing Tx descriptor count from %d to %d.\n",
2019                             vsi->tx_rings[0]->count, new_tx_count);
2020                 tx_rings = kcalloc(tx_alloc_queue_pairs,
2021                                    sizeof(struct i40e_ring), GFP_KERNEL);
2022                 if (!tx_rings) {
2023                         err = -ENOMEM;
2024                         goto done;
2025                 }
2026
2027                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2028                         if (!i40e_active_tx_ring_index(vsi, i))
2029                                 continue;
2030
2031                         tx_rings[i] = *vsi->tx_rings[i];
2032                         tx_rings[i].count = new_tx_count;
2033                         /* the desc and bi pointers will be reallocated in the
2034                          * setup call
2035                          */
2036                         tx_rings[i].desc = NULL;
2037                         tx_rings[i].rx_bi = NULL;
2038                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
2039                         if (err) {
2040                                 while (i) {
2041                                         i--;
2042                                         if (!i40e_active_tx_ring_index(vsi, i))
2043                                                 continue;
2044                                         i40e_free_tx_resources(&tx_rings[i]);
2045                                 }
2046                                 kfree(tx_rings);
2047                                 tx_rings = NULL;
2048
2049                                 goto done;
2050                         }
2051                 }
2052         }
2053
2054         /* alloc updated Rx resources */
2055         if (new_rx_count != vsi->rx_rings[0]->count) {
2056                 netdev_info(netdev,
2057                             "Changing Rx descriptor count from %d to %d\n",
2058                             vsi->rx_rings[0]->count, new_rx_count);
2059                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
2060                                    sizeof(struct i40e_ring), GFP_KERNEL);
2061                 if (!rx_rings) {
2062                         err = -ENOMEM;
2063                         goto free_tx;
2064                 }
2065
2066                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2067                         u16 unused;
2068
2069                         /* clone ring and setup updated count */
2070                         rx_rings[i] = *vsi->rx_rings[i];
2071                         rx_rings[i].count = new_rx_count;
2072                         /* the desc and bi pointers will be reallocated in the
2073                          * setup call
2074                          */
2075                         rx_rings[i].desc = NULL;
2076                         rx_rings[i].rx_bi = NULL;
2077                         /* Clear cloned XDP RX-queue info before setup call */
2078                         memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
2079                         /* this is to allow wr32 to have something to write to
2080                          * during early allocation of Rx buffers
2081                          */
2082                         rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
2083                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
2084                         if (err)
2085                                 goto rx_unwind;
2086                         err = i40e_alloc_rx_bi(&rx_rings[i]);
2087                         if (err)
2088                                 goto rx_unwind;
2089
2090                         /* now allocate the Rx buffers to make sure the OS
2091                          * has enough memory, any failure here means abort
2092                          */
2093                         unused = I40E_DESC_UNUSED(&rx_rings[i]);
2094                         err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
2095 rx_unwind:
2096                         if (err) {
2097                                 do {
2098                                         i40e_free_rx_resources(&rx_rings[i]);
2099                                 } while (i--);
2100                                 kfree(rx_rings);
2101                                 rx_rings = NULL;
2102
2103                                 goto free_tx;
2104                         }
2105                 }
2106         }
2107
2108         /* Bring interface down, copy in the new ring info,
2109          * then restore the interface
2110          */
2111         i40e_down(vsi);
2112
2113         if (tx_rings) {
2114                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2115                         if (i40e_active_tx_ring_index(vsi, i)) {
2116                                 i40e_free_tx_resources(vsi->tx_rings[i]);
2117                                 *vsi->tx_rings[i] = tx_rings[i];
2118                         }
2119                 }
2120                 kfree(tx_rings);
2121                 tx_rings = NULL;
2122         }
2123
2124         if (rx_rings) {
2125                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2126                         i40e_free_rx_resources(vsi->rx_rings[i]);
2127                         /* get the real tail offset */
2128                         rx_rings[i].tail = vsi->rx_rings[i]->tail;
2129                         /* this is to fake out the allocation routine
2130                          * into thinking it has to realloc everything
2131                          * but the recycling logic will let us re-use
2132                          * the buffers allocated above
2133                          */
2134                         rx_rings[i].next_to_use = 0;
2135                         rx_rings[i].next_to_clean = 0;
2136                         rx_rings[i].next_to_alloc = 0;
2137                         /* do a struct copy */
2138                         *vsi->rx_rings[i] = rx_rings[i];
2139                 }
2140                 kfree(rx_rings);
2141                 rx_rings = NULL;
2142         }
2143
2144         vsi->num_tx_desc = new_tx_count;
2145         vsi->num_rx_desc = new_rx_count;
2146         i40e_up(vsi);
2147
2148 free_tx:
2149         /* error cleanup if the Rx allocations failed after getting Tx */
2150         if (tx_rings) {
2151                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2152                         if (i40e_active_tx_ring_index(vsi, i))
2153                                 i40e_free_tx_resources(vsi->tx_rings[i]);
2154                 }
2155                 kfree(tx_rings);
2156                 tx_rings = NULL;
2157         }
2158
2159 done:
2160         clear_bit(__I40E_CONFIG_BUSY, pf->state);
2161
2162         return err;
2163 }
2164
2165 /**
2166  * i40e_get_stats_count - return the stats count for a device
2167  * @netdev: the netdev to return the count for
2168  *
2169  * Returns the total number of statistics for this netdev. Note that even
2170  * though this is a function, it is required that the count for a specific
2171  * netdev must never change. Basing the count on static values such as the
2172  * maximum number of queues or the device type is ok. However, the API for
2173  * obtaining stats is *not* safe against changes based on non-static
2174  * values such as the *current* number of queues, or runtime flags.
2175  *
2176  * If a statistic is not always enabled, return it as part of the count
2177  * anyways, always return its string, and report its value as zero.
2178  **/
2179 static int i40e_get_stats_count(struct net_device *netdev)
2180 {
2181         struct i40e_netdev_priv *np = netdev_priv(netdev);
2182         struct i40e_vsi *vsi = np->vsi;
2183         struct i40e_pf *pf = vsi->back;
2184         int stats_len;
2185
2186         if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
2187                 stats_len = I40E_PF_STATS_LEN;
2188         else
2189                 stats_len = I40E_VSI_STATS_LEN;
2190
2191         /* The number of stats reported for a given net_device must remain
2192          * constant throughout the life of that device.
2193          *
2194          * This is because the API for obtaining the size, strings, and stats
2195          * is spread out over three separate ethtool ioctls. There is no safe
2196          * way to lock the number of stats across these calls, so we must
2197          * assume that they will never change.
2198          *
2199          * Due to this, we report the maximum number of queues, even if not
2200          * every queue is currently configured. Since we always allocate
2201          * queues in pairs, we'll just use netdev->num_tx_queues * 2. This
2202          * works because the num_tx_queues is set at device creation and never
2203          * changes.
2204          */
2205         stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
2206
2207         return stats_len;
2208 }
2209
2210 static int i40e_get_sset_count(struct net_device *netdev, int sset)
2211 {
2212         struct i40e_netdev_priv *np = netdev_priv(netdev);
2213         struct i40e_vsi *vsi = np->vsi;
2214         struct i40e_pf *pf = vsi->back;
2215
2216         switch (sset) {
2217         case ETH_SS_TEST:
2218                 return I40E_TEST_LEN;
2219         case ETH_SS_STATS:
2220                 return i40e_get_stats_count(netdev);
2221         case ETH_SS_PRIV_FLAGS:
2222                 return I40E_PRIV_FLAGS_STR_LEN +
2223                         (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
2224         default:
2225                 return -EOPNOTSUPP;
2226         }
2227 }
2228
2229 /**
2230  * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure
2231  * @tc: the TC statistics in VEB structure (veb->tc_stats)
2232  * @i: the index of traffic class in (veb->tc_stats) structure to copy
2233  *
2234  * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to
2235  * one dimensional structure i40e_cp_veb_tc_stats.
2236  * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC
2237  * statistics for the given TC.
2238  **/
2239 static struct i40e_cp_veb_tc_stats
2240 i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i)
2241 {
2242         struct i40e_cp_veb_tc_stats veb_tc = {
2243                 .tc_rx_packets = tc->tc_rx_packets[i],
2244                 .tc_rx_bytes = tc->tc_rx_bytes[i],
2245                 .tc_tx_packets = tc->tc_tx_packets[i],
2246                 .tc_tx_bytes = tc->tc_tx_bytes[i],
2247         };
2248
2249         return veb_tc;
2250 }
2251
2252 /**
2253  * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
2254  * @pf: the PF device structure
2255  * @i: the priority value to copy
2256  *
2257  * The PFC stats are found as arrays in pf->stats, which is not easy to pass
2258  * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
2259  * of the PFC stats for the given priority.
2260  **/
2261 static inline struct i40e_pfc_stats
2262 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
2263 {
2264 #define I40E_GET_PFC_STAT(stat, priority) \
2265         .stat = pf->stats.stat[priority]
2266
2267         struct i40e_pfc_stats pfc = {
2268                 I40E_GET_PFC_STAT(priority_xon_rx, i),
2269                 I40E_GET_PFC_STAT(priority_xoff_rx, i),
2270                 I40E_GET_PFC_STAT(priority_xon_tx, i),
2271                 I40E_GET_PFC_STAT(priority_xoff_tx, i),
2272                 I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
2273         };
2274         return pfc;
2275 }
2276
2277 /**
2278  * i40e_get_ethtool_stats - copy stat values into supplied buffer
2279  * @netdev: the netdev to collect stats for
2280  * @stats: ethtool stats command structure
2281  * @data: ethtool supplied buffer
2282  *
2283  * Copy the stats values for this netdev into the buffer. Expects data to be
2284  * pre-allocated to the size returned by i40e_get_stats_count.. Note that all
2285  * statistics must be copied in a static order, and the count must not change
2286  * for a given netdev. See i40e_get_stats_count for more details.
2287  *
2288  * If a statistic is not currently valid (such as a disabled queue), this
2289  * function reports its value as zero.
2290  **/
2291 static void i40e_get_ethtool_stats(struct net_device *netdev,
2292                                    struct ethtool_stats *stats, u64 *data)
2293 {
2294         struct i40e_netdev_priv *np = netdev_priv(netdev);
2295         struct i40e_vsi *vsi = np->vsi;
2296         struct i40e_pf *pf = vsi->back;
2297         struct i40e_veb *veb = NULL;
2298         unsigned int i;
2299         bool veb_stats;
2300         u64 *p = data;
2301
2302         i40e_update_stats(vsi);
2303
2304         i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
2305                                i40e_gstrings_net_stats);
2306
2307         i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
2308
2309         rcu_read_lock();
2310         for (i = 0; i < netdev->num_tx_queues; i++) {
2311                 i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
2312                 i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
2313         }
2314         rcu_read_unlock();
2315
2316         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2317                 goto check_data_pointer;
2318
2319         veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
2320                      (pf->lan_veb < I40E_MAX_VEB) &&
2321                      (pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
2322
2323         if (veb_stats) {
2324                 veb = pf->veb[pf->lan_veb];
2325                 i40e_update_veb_stats(veb);
2326         }
2327
2328         /* If veb stats aren't enabled, pass NULL instead of the veb so that
2329          * we initialize stats to zero and update the data pointer
2330          * intelligently
2331          */
2332         i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2333                                i40e_gstrings_veb_stats);
2334
2335         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2336                 if (veb_stats) {
2337                         struct i40e_cp_veb_tc_stats veb_tc =
2338                                 i40e_get_veb_tc_stats(&veb->tc_stats, i);
2339
2340                         i40e_add_ethtool_stats(&data, &veb_tc,
2341                                                i40e_gstrings_veb_tc_stats);
2342                 } else {
2343                         i40e_add_ethtool_stats(&data, NULL,
2344                                                i40e_gstrings_veb_tc_stats);
2345                 }
2346
2347         i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
2348
2349         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
2350                 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
2351
2352                 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
2353         }
2354
2355 check_data_pointer:
2356         WARN_ONCE(data - p != i40e_get_stats_count(netdev),
2357                   "ethtool stats count mismatch!");
2358 }
2359
2360 /**
2361  * i40e_get_stat_strings - copy stat strings into supplied buffer
2362  * @netdev: the netdev to collect strings for
2363  * @data: supplied buffer to copy strings into
2364  *
2365  * Copy the strings related to stats for this netdev. Expects data to be
2366  * pre-allocated with the size reported by i40e_get_stats_count. Note that the
2367  * strings must be copied in a static order and the total count must not
2368  * change for a given netdev. See i40e_get_stats_count for more details.
2369  **/
2370 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
2371 {
2372         struct i40e_netdev_priv *np = netdev_priv(netdev);
2373         struct i40e_vsi *vsi = np->vsi;
2374         struct i40e_pf *pf = vsi->back;
2375         unsigned int i;
2376         u8 *p = data;
2377
2378         i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
2379
2380         i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
2381
2382         for (i = 0; i < netdev->num_tx_queues; i++) {
2383                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2384                                       "tx", i);
2385                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2386                                       "rx", i);
2387         }
2388
2389         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2390                 goto check_data_pointer;
2391
2392         i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
2393
2394         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2395                 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
2396
2397         i40e_add_stat_strings(&data, i40e_gstrings_stats);
2398
2399         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
2400                 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
2401
2402 check_data_pointer:
2403         WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
2404                   "stat strings count mismatch!");
2405 }
2406
2407 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
2408 {
2409         struct i40e_netdev_priv *np = netdev_priv(netdev);
2410         struct i40e_vsi *vsi = np->vsi;
2411         struct i40e_pf *pf = vsi->back;
2412         unsigned int i;
2413         u8 *p = data;
2414
2415         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
2416                 ethtool_sprintf(&p, i40e_gstrings_priv_flags[i].flag_string);
2417         if (pf->hw.pf_id != 0)
2418                 return;
2419         for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
2420                 ethtool_sprintf(&p, i40e_gl_gstrings_priv_flags[i].flag_string);
2421 }
2422
2423 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
2424                              u8 *data)
2425 {
2426         switch (stringset) {
2427         case ETH_SS_TEST:
2428                 memcpy(data, i40e_gstrings_test,
2429                        I40E_TEST_LEN * ETH_GSTRING_LEN);
2430                 break;
2431         case ETH_SS_STATS:
2432                 i40e_get_stat_strings(netdev, data);
2433                 break;
2434         case ETH_SS_PRIV_FLAGS:
2435                 i40e_get_priv_flag_strings(netdev, data);
2436                 break;
2437         default:
2438                 break;
2439         }
2440 }
2441
2442 static int i40e_get_ts_info(struct net_device *dev,
2443                             struct ethtool_ts_info *info)
2444 {
2445         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
2446
2447         /* only report HW timestamping if PTP is enabled */
2448         if (!(pf->flags & I40E_FLAG_PTP))
2449                 return ethtool_op_get_ts_info(dev, info);
2450
2451         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
2452                                 SOF_TIMESTAMPING_RX_SOFTWARE |
2453                                 SOF_TIMESTAMPING_SOFTWARE |
2454                                 SOF_TIMESTAMPING_TX_HARDWARE |
2455                                 SOF_TIMESTAMPING_RX_HARDWARE |
2456                                 SOF_TIMESTAMPING_RAW_HARDWARE;
2457
2458         if (pf->ptp_clock)
2459                 info->phc_index = ptp_clock_index(pf->ptp_clock);
2460         else
2461                 info->phc_index = -1;
2462
2463         info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2464
2465         info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
2466                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
2467                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2468                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
2469
2470         if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
2471                 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2472                                     BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2473                                     BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2474                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
2475                                     BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2476                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2477                                     BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2478                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
2479
2480         return 0;
2481 }
2482
2483 static u64 i40e_link_test(struct net_device *netdev, u64 *data)
2484 {
2485         struct i40e_netdev_priv *np = netdev_priv(netdev);
2486         struct i40e_pf *pf = np->vsi->back;
2487         i40e_status status;
2488         bool link_up = false;
2489
2490         netif_info(pf, hw, netdev, "link test\n");
2491         status = i40e_get_link_status(&pf->hw, &link_up);
2492         if (status) {
2493                 netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
2494                 *data = 1;
2495                 return *data;
2496         }
2497
2498         if (link_up)
2499                 *data = 0;
2500         else
2501                 *data = 1;
2502
2503         return *data;
2504 }
2505
2506 static u64 i40e_reg_test(struct net_device *netdev, u64 *data)
2507 {
2508         struct i40e_netdev_priv *np = netdev_priv(netdev);
2509         struct i40e_pf *pf = np->vsi->back;
2510
2511         netif_info(pf, hw, netdev, "register test\n");
2512         *data = i40e_diag_reg_test(&pf->hw);
2513
2514         return *data;
2515 }
2516
2517 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data)
2518 {
2519         struct i40e_netdev_priv *np = netdev_priv(netdev);
2520         struct i40e_pf *pf = np->vsi->back;
2521
2522         netif_info(pf, hw, netdev, "eeprom test\n");
2523         *data = i40e_diag_eeprom_test(&pf->hw);
2524
2525         /* forcebly clear the NVM Update state machine */
2526         pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
2527
2528         return *data;
2529 }
2530
2531 static u64 i40e_intr_test(struct net_device *netdev, u64 *data)
2532 {
2533         struct i40e_netdev_priv *np = netdev_priv(netdev);
2534         struct i40e_pf *pf = np->vsi->back;
2535         u16 swc_old = pf->sw_int_count;
2536
2537         netif_info(pf, hw, netdev, "interrupt test\n");
2538         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
2539              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
2540               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
2541               I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
2542               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
2543               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
2544         usleep_range(1000, 2000);
2545         *data = (swc_old == pf->sw_int_count);
2546
2547         return *data;
2548 }
2549
2550 static inline bool i40e_active_vfs(struct i40e_pf *pf)
2551 {
2552         struct i40e_vf *vfs = pf->vf;
2553         int i;
2554
2555         for (i = 0; i < pf->num_alloc_vfs; i++)
2556                 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2557                         return true;
2558         return false;
2559 }
2560
2561 static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
2562 {
2563         return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
2564 }
2565
2566 static void i40e_diag_test(struct net_device *netdev,
2567                            struct ethtool_test *eth_test, u64 *data)
2568 {
2569         struct i40e_netdev_priv *np = netdev_priv(netdev);
2570         bool if_running = netif_running(netdev);
2571         struct i40e_pf *pf = np->vsi->back;
2572
2573         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
2574                 /* Offline tests */
2575                 netif_info(pf, drv, netdev, "offline testing starting\n");
2576
2577                 set_bit(__I40E_TESTING, pf->state);
2578
2579                 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2580                         dev_warn(&pf->pdev->dev,
2581                                  "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2582                         data[I40E_ETH_TEST_REG]         = 1;
2583                         data[I40E_ETH_TEST_EEPROM]      = 1;
2584                         data[I40E_ETH_TEST_INTR]        = 1;
2585                         data[I40E_ETH_TEST_LINK]        = 1;
2586                         eth_test->flags |= ETH_TEST_FL_FAILED;
2587                         clear_bit(__I40E_TESTING, pf->state);
2588                         goto skip_ol_tests;
2589                 }
2590
2591                 /* If the device is online then take it offline */
2592                 if (if_running)
2593                         /* indicate we're in test mode */
2594                         i40e_close(netdev);
2595                 else
2596                         /* This reset does not affect link - if it is
2597                          * changed to a type of reset that does affect
2598                          * link then the following link test would have
2599                          * to be moved to before the reset
2600                          */
2601                         i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2602
2603                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2604                         eth_test->flags |= ETH_TEST_FL_FAILED;
2605
2606                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
2607                         eth_test->flags |= ETH_TEST_FL_FAILED;
2608
2609                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
2610                         eth_test->flags |= ETH_TEST_FL_FAILED;
2611
2612                 /* run reg test last, a reset is required after it */
2613                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
2614                         eth_test->flags |= ETH_TEST_FL_FAILED;
2615
2616                 clear_bit(__I40E_TESTING, pf->state);
2617                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2618
2619                 if (if_running)
2620                         i40e_open(netdev);
2621         } else {
2622                 /* Online tests */
2623                 netif_info(pf, drv, netdev, "online testing starting\n");
2624
2625                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2626                         eth_test->flags |= ETH_TEST_FL_FAILED;
2627
2628                 /* Offline only tests, not run in online; pass by default */
2629                 data[I40E_ETH_TEST_REG] = 0;
2630                 data[I40E_ETH_TEST_EEPROM] = 0;
2631                 data[I40E_ETH_TEST_INTR] = 0;
2632         }
2633
2634 skip_ol_tests:
2635
2636         netif_info(pf, drv, netdev, "testing finished\n");
2637 }
2638
2639 static void i40e_get_wol(struct net_device *netdev,
2640                          struct ethtool_wolinfo *wol)
2641 {
2642         struct i40e_netdev_priv *np = netdev_priv(netdev);
2643         struct i40e_pf *pf = np->vsi->back;
2644         struct i40e_hw *hw = &pf->hw;
2645         u16 wol_nvm_bits;
2646
2647         /* NVM bit on means WoL disabled for the port */
2648         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2649         if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
2650                 wol->supported = 0;
2651                 wol->wolopts = 0;
2652         } else {
2653                 wol->supported = WAKE_MAGIC;
2654                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
2655         }
2656 }
2657
2658 /**
2659  * i40e_set_wol - set the WakeOnLAN configuration
2660  * @netdev: the netdev in question
2661  * @wol: the ethtool WoL setting data
2662  **/
2663 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2664 {
2665         struct i40e_netdev_priv *np = netdev_priv(netdev);
2666         struct i40e_pf *pf = np->vsi->back;
2667         struct i40e_vsi *vsi = np->vsi;
2668         struct i40e_hw *hw = &pf->hw;
2669         u16 wol_nvm_bits;
2670
2671         /* WoL not supported if this isn't the controlling PF on the port */
2672         if (hw->partition_id != 1) {
2673                 i40e_partition_setting_complaint(pf);
2674                 return -EOPNOTSUPP;
2675         }
2676
2677         if (vsi != pf->vsi[pf->lan_vsi])
2678                 return -EOPNOTSUPP;
2679
2680         /* NVM bit on means WoL disabled for the port */
2681         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2682         if (BIT(hw->port) & wol_nvm_bits)
2683                 return -EOPNOTSUPP;
2684
2685         /* only magic packet is supported */
2686         if (wol->wolopts & ~WAKE_MAGIC)
2687                 return -EOPNOTSUPP;
2688
2689         /* is this a new value? */
2690         if (pf->wol_en != !!wol->wolopts) {
2691                 pf->wol_en = !!wol->wolopts;
2692                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
2693         }
2694
2695         return 0;
2696 }
2697
2698 static int i40e_set_phys_id(struct net_device *netdev,
2699                             enum ethtool_phys_id_state state)
2700 {
2701         struct i40e_netdev_priv *np = netdev_priv(netdev);
2702         i40e_status ret = 0;
2703         struct i40e_pf *pf = np->vsi->back;
2704         struct i40e_hw *hw = &pf->hw;
2705         int blink_freq = 2;
2706         u16 temp_status;
2707
2708         switch (state) {
2709         case ETHTOOL_ID_ACTIVE:
2710                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2711                         pf->led_status = i40e_led_get(hw);
2712                 } else {
2713                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2714                                 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
2715                                                       NULL);
2716                         ret = i40e_led_get_phy(hw, &temp_status,
2717                                                &pf->phy_led_val);
2718                         pf->led_status = temp_status;
2719                 }
2720                 return blink_freq;
2721         case ETHTOOL_ID_ON:
2722                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2723                         i40e_led_set(hw, 0xf, false);
2724                 else
2725                         ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
2726                 break;
2727         case ETHTOOL_ID_OFF:
2728                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2729                         i40e_led_set(hw, 0x0, false);
2730                 else
2731                         ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
2732                 break;
2733         case ETHTOOL_ID_INACTIVE:
2734                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2735                         i40e_led_set(hw, pf->led_status, false);
2736                 } else {
2737                         ret = i40e_led_set_phy(hw, false, pf->led_status,
2738                                                (pf->phy_led_val |
2739                                                I40E_PHY_LED_MODE_ORIG));
2740                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2741                                 i40e_aq_set_phy_debug(hw, 0, NULL);
2742                 }
2743                 break;
2744         default:
2745                 break;
2746         }
2747         if (ret)
2748                 return -ENOENT;
2749         else
2750                 return 0;
2751 }
2752
2753 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2754  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2755  * 125us (8000 interrupts per second) == ITR(62)
2756  */
2757
2758 /**
2759  * __i40e_get_coalesce - get per-queue coalesce settings
2760  * @netdev: the netdev to check
2761  * @ec: ethtool coalesce data structure
2762  * @queue: which queue to pick
2763  *
2764  * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2765  * are per queue. If queue is <0 then we default to queue 0 as the
2766  * representative value.
2767  **/
2768 static int __i40e_get_coalesce(struct net_device *netdev,
2769                                struct ethtool_coalesce *ec,
2770                                int queue)
2771 {
2772         struct i40e_netdev_priv *np = netdev_priv(netdev);
2773         struct i40e_ring *rx_ring, *tx_ring;
2774         struct i40e_vsi *vsi = np->vsi;
2775
2776         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2777         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2778
2779         /* rx and tx usecs has per queue value. If user doesn't specify the
2780          * queue, return queue 0's value to represent.
2781          */
2782         if (queue < 0)
2783                 queue = 0;
2784         else if (queue >= vsi->num_queue_pairs)
2785                 return -EINVAL;
2786
2787         rx_ring = vsi->rx_rings[queue];
2788         tx_ring = vsi->tx_rings[queue];
2789
2790         if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2791                 ec->use_adaptive_rx_coalesce = 1;
2792
2793         if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2794                 ec->use_adaptive_tx_coalesce = 1;
2795
2796         ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2797         ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2798
2799         /* we use the _usecs_high to store/set the interrupt rate limit
2800          * that the hardware supports, that almost but not quite
2801          * fits the original intent of the ethtool variable,
2802          * the rx_coalesce_usecs_high limits total interrupts
2803          * per second from both tx/rx sources.
2804          */
2805         ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2806         ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2807
2808         return 0;
2809 }
2810
2811 /**
2812  * i40e_get_coalesce - get a netdev's coalesce settings
2813  * @netdev: the netdev to check
2814  * @ec: ethtool coalesce data structure
2815  *
2816  * Gets the coalesce settings for a particular netdev. Note that if user has
2817  * modified per-queue settings, this only guarantees to represent queue 0. See
2818  * __i40e_get_coalesce for more details.
2819  **/
2820 static int i40e_get_coalesce(struct net_device *netdev,
2821                              struct ethtool_coalesce *ec)
2822 {
2823         return __i40e_get_coalesce(netdev, ec, -1);
2824 }
2825
2826 /**
2827  * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2828  * @netdev: netdev structure
2829  * @ec: ethtool's coalesce settings
2830  * @queue: the particular queue to read
2831  *
2832  * Will read a specific queue's coalesce settings
2833  **/
2834 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2835                                        struct ethtool_coalesce *ec)
2836 {
2837         return __i40e_get_coalesce(netdev, ec, queue);
2838 }
2839
2840 /**
2841  * i40e_set_itr_per_queue - set ITR values for specific queue
2842  * @vsi: the VSI to set values for
2843  * @ec: coalesce settings from ethtool
2844  * @queue: the queue to modify
2845  *
2846  * Change the ITR settings for a specific queue.
2847  **/
2848 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2849                                    struct ethtool_coalesce *ec,
2850                                    int queue)
2851 {
2852         struct i40e_ring *rx_ring = vsi->rx_rings[queue];
2853         struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2854         struct i40e_pf *pf = vsi->back;
2855         struct i40e_hw *hw = &pf->hw;
2856         struct i40e_q_vector *q_vector;
2857         u16 intrl;
2858
2859         intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2860
2861         rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
2862         tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2863
2864         if (ec->use_adaptive_rx_coalesce)
2865                 rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2866         else
2867                 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2868
2869         if (ec->use_adaptive_tx_coalesce)
2870                 tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2871         else
2872                 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2873
2874         q_vector = rx_ring->q_vector;
2875         q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2876
2877         q_vector = tx_ring->q_vector;
2878         q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
2879
2880         /* The interrupt handler itself will take care of programming
2881          * the Tx and Rx ITR values based on the values we have entered
2882          * into the q_vector, no need to write the values now.
2883          */
2884
2885         wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
2886         i40e_flush(hw);
2887 }
2888
2889 /**
2890  * __i40e_set_coalesce - set coalesce settings for particular queue
2891  * @netdev: the netdev to change
2892  * @ec: ethtool coalesce settings
2893  * @queue: the queue to change
2894  *
2895  * Sets the coalesce settings for a particular queue.
2896  **/
2897 static int __i40e_set_coalesce(struct net_device *netdev,
2898                                struct ethtool_coalesce *ec,
2899                                int queue)
2900 {
2901         struct i40e_netdev_priv *np = netdev_priv(netdev);
2902         u16 intrl_reg, cur_rx_itr, cur_tx_itr;
2903         struct i40e_vsi *vsi = np->vsi;
2904         struct i40e_pf *pf = vsi->back;
2905         int i;
2906
2907         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
2908                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
2909
2910         if (queue < 0) {
2911                 cur_rx_itr = vsi->rx_rings[0]->itr_setting;
2912                 cur_tx_itr = vsi->tx_rings[0]->itr_setting;
2913         } else if (queue < vsi->num_queue_pairs) {
2914                 cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
2915                 cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
2916         } else {
2917                 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
2918                            vsi->num_queue_pairs - 1);
2919                 return -EINVAL;
2920         }
2921
2922         cur_tx_itr &= ~I40E_ITR_DYNAMIC;
2923         cur_rx_itr &= ~I40E_ITR_DYNAMIC;
2924
2925         /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
2926         if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
2927                 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
2928                 return -EINVAL;
2929         }
2930
2931         if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
2932                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
2933                            INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2934                 return -EINVAL;
2935         }
2936
2937         if (ec->rx_coalesce_usecs != cur_rx_itr &&
2938             ec->use_adaptive_rx_coalesce) {
2939                 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
2940                 return -EINVAL;
2941         }
2942
2943         if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
2944                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
2945                 return -EINVAL;
2946         }
2947
2948         if (ec->tx_coalesce_usecs != cur_tx_itr &&
2949             ec->use_adaptive_tx_coalesce) {
2950                 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
2951                 return -EINVAL;
2952         }
2953
2954         if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
2955                 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
2956                 return -EINVAL;
2957         }
2958
2959         if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2960                 ec->rx_coalesce_usecs = I40E_MIN_ITR;
2961
2962         if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2963                 ec->tx_coalesce_usecs = I40E_MIN_ITR;
2964
2965         intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
2966         vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
2967         if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
2968                 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
2969                            vsi->int_rate_limit);
2970         }
2971
2972         /* rx and tx usecs has per queue value. If user doesn't specify the
2973          * queue, apply to all queues.
2974          */
2975         if (queue < 0) {
2976                 for (i = 0; i < vsi->num_queue_pairs; i++)
2977                         i40e_set_itr_per_queue(vsi, ec, i);
2978         } else {
2979                 i40e_set_itr_per_queue(vsi, ec, queue);
2980         }
2981
2982         return 0;
2983 }
2984
2985 /**
2986  * i40e_set_coalesce - set coalesce settings for every queue on the netdev
2987  * @netdev: the netdev to change
2988  * @ec: ethtool coalesce settings
2989  *
2990  * This will set each queue to the same coalesce settings.
2991  **/
2992 static int i40e_set_coalesce(struct net_device *netdev,
2993                              struct ethtool_coalesce *ec)
2994 {
2995         return __i40e_set_coalesce(netdev, ec, -1);
2996 }
2997
2998 /**
2999  * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
3000  * @netdev: the netdev to change
3001  * @ec: ethtool's coalesce settings
3002  * @queue: the queue to change
3003  *
3004  * Sets the specified queue's coalesce settings.
3005  **/
3006 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
3007                                        struct ethtool_coalesce *ec)
3008 {
3009         return __i40e_set_coalesce(netdev, ec, queue);
3010 }
3011
3012 /**
3013  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
3014  * @pf: pointer to the physical function struct
3015  * @cmd: ethtool rxnfc command
3016  *
3017  * Returns Success if the flow is supported, else Invalid Input.
3018  **/
3019 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
3020 {
3021         struct i40e_hw *hw = &pf->hw;
3022         u8 flow_pctype = 0;
3023         u64 i_set = 0;
3024
3025         cmd->data = 0;
3026
3027         switch (cmd->flow_type) {
3028         case TCP_V4_FLOW:
3029                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3030                 break;
3031         case UDP_V4_FLOW:
3032                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3033                 break;
3034         case TCP_V6_FLOW:
3035                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3036                 break;
3037         case UDP_V6_FLOW:
3038                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3039                 break;
3040         case SCTP_V4_FLOW:
3041         case AH_ESP_V4_FLOW:
3042         case AH_V4_FLOW:
3043         case ESP_V4_FLOW:
3044         case IPV4_FLOW:
3045         case SCTP_V6_FLOW:
3046         case AH_ESP_V6_FLOW:
3047         case AH_V6_FLOW:
3048         case ESP_V6_FLOW:
3049         case IPV6_FLOW:
3050                 /* Default is src/dest for IP, no matter the L4 hashing */
3051                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
3052                 break;
3053         default:
3054                 return -EINVAL;
3055         }
3056
3057         /* Read flow based hash input set register */
3058         if (flow_pctype) {
3059                 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3060                                               flow_pctype)) |
3061                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3062                                                flow_pctype)) << 32);
3063         }
3064
3065         /* Process bits of hash input set */
3066         if (i_set) {
3067                 if (i_set & I40E_L4_SRC_MASK)
3068                         cmd->data |= RXH_L4_B_0_1;
3069                 if (i_set & I40E_L4_DST_MASK)
3070                         cmd->data |= RXH_L4_B_2_3;
3071
3072                 if (cmd->flow_type == TCP_V4_FLOW ||
3073                     cmd->flow_type == UDP_V4_FLOW) {
3074                         if (i_set & I40E_L3_SRC_MASK)
3075                                 cmd->data |= RXH_IP_SRC;
3076                         if (i_set & I40E_L3_DST_MASK)
3077                                 cmd->data |= RXH_IP_DST;
3078                 } else if (cmd->flow_type == TCP_V6_FLOW ||
3079                           cmd->flow_type == UDP_V6_FLOW) {
3080                         if (i_set & I40E_L3_V6_SRC_MASK)
3081                                 cmd->data |= RXH_IP_SRC;
3082                         if (i_set & I40E_L3_V6_DST_MASK)
3083                                 cmd->data |= RXH_IP_DST;
3084                 }
3085         }
3086
3087         return 0;
3088 }
3089
3090 /**
3091  * i40e_check_mask - Check whether a mask field is set
3092  * @mask: the full mask value
3093  * @field: mask of the field to check
3094  *
3095  * If the given mask is fully set, return positive value. If the mask for the
3096  * field is fully unset, return zero. Otherwise return a negative error code.
3097  **/
3098 static int i40e_check_mask(u64 mask, u64 field)
3099 {
3100         u64 value = mask & field;
3101
3102         if (value == field)
3103                 return 1;
3104         else if (!value)
3105                 return 0;
3106         else
3107                 return -1;
3108 }
3109
3110 /**
3111  * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
3112  * @fsp: pointer to rx flow specification
3113  * @data: pointer to userdef data structure for storage
3114  *
3115  * Read the user-defined data and deconstruct the value into a structure. No
3116  * other code should read the user-defined data, so as to ensure that every
3117  * place consistently reads the value correctly.
3118  *
3119  * The user-defined field is a 64bit Big Endian format value, which we
3120  * deconstruct by reading bits or bit fields from it. Single bit flags shall
3121  * be defined starting from the highest bits, while small bit field values
3122  * shall be defined starting from the lowest bits.
3123  *
3124  * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
3125  * and the filter should be rejected. The data structure will always be
3126  * modified even if FLOW_EXT is not set.
3127  *
3128  **/
3129 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3130                                         struct i40e_rx_flow_userdef *data)
3131 {
3132         u64 value, mask;
3133         int valid;
3134
3135         /* Zero memory first so it's always consistent. */
3136         memset(data, 0, sizeof(*data));
3137
3138         if (!(fsp->flow_type & FLOW_EXT))
3139                 return 0;
3140
3141         value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
3142         mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
3143
3144 #define I40E_USERDEF_FLEX_WORD          GENMASK_ULL(15, 0)
3145 #define I40E_USERDEF_FLEX_OFFSET        GENMASK_ULL(31, 16)
3146 #define I40E_USERDEF_FLEX_FILTER        GENMASK_ULL(31, 0)
3147
3148         valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
3149         if (valid < 0) {
3150                 return -EINVAL;
3151         } else if (valid) {
3152                 data->flex_word = value & I40E_USERDEF_FLEX_WORD;
3153                 data->flex_offset =
3154                         (value & I40E_USERDEF_FLEX_OFFSET) >> 16;
3155                 data->flex_filter = true;
3156         }
3157
3158         return 0;
3159 }
3160
3161 /**
3162  * i40e_fill_rx_flow_user_data - Fill in user-defined data field
3163  * @fsp: pointer to rx_flow specification
3164  * @data: pointer to return userdef data
3165  *
3166  * Reads the userdef data structure and properly fills in the user defined
3167  * fields of the rx_flow_spec.
3168  **/
3169 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3170                                         struct i40e_rx_flow_userdef *data)
3171 {
3172         u64 value = 0, mask = 0;
3173
3174         if (data->flex_filter) {
3175                 value |= data->flex_word;
3176                 value |= (u64)data->flex_offset << 16;
3177                 mask |= I40E_USERDEF_FLEX_FILTER;
3178         }
3179
3180         if (value || mask)
3181                 fsp->flow_type |= FLOW_EXT;
3182
3183         *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
3184         *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
3185 }
3186
3187 /**
3188  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
3189  * @pf: Pointer to the physical function struct
3190  * @cmd: The command to get or set Rx flow classification rules
3191  * @rule_locs: Array of used rule locations
3192  *
3193  * This function populates both the total and actual rule count of
3194  * the ethtool flow classification command
3195  *
3196  * Returns 0 on success or -EMSGSIZE if entry not found
3197  **/
3198 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
3199                                      struct ethtool_rxnfc *cmd,
3200                                      u32 *rule_locs)
3201 {
3202         struct i40e_fdir_filter *rule;
3203         struct hlist_node *node2;
3204         int cnt = 0;
3205
3206         /* report total rule count */
3207         cmd->data = i40e_get_fd_cnt_all(pf);
3208
3209         hlist_for_each_entry_safe(rule, node2,
3210                                   &pf->fdir_filter_list, fdir_node) {
3211                 if (cnt == cmd->rule_cnt)
3212                         return -EMSGSIZE;
3213
3214                 rule_locs[cnt] = rule->fd_id;
3215                 cnt++;
3216         }
3217
3218         cmd->rule_cnt = cnt;
3219
3220         return 0;
3221 }
3222
3223 /**
3224  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
3225  * @pf: Pointer to the physical function struct
3226  * @cmd: The command to get or set Rx flow classification rules
3227  *
3228  * This function looks up a filter based on the Rx flow classification
3229  * command and fills the flow spec info for it if found
3230  *
3231  * Returns 0 on success or -EINVAL if filter not found
3232  **/
3233 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
3234                                        struct ethtool_rxnfc *cmd)
3235 {
3236         struct ethtool_rx_flow_spec *fsp =
3237                         (struct ethtool_rx_flow_spec *)&cmd->fs;
3238         struct i40e_rx_flow_userdef userdef = {0};
3239         struct i40e_fdir_filter *rule = NULL;
3240         struct hlist_node *node2;
3241         u64 input_set;
3242         u16 index;
3243
3244         hlist_for_each_entry_safe(rule, node2,
3245                                   &pf->fdir_filter_list, fdir_node) {
3246                 if (fsp->location <= rule->fd_id)
3247                         break;
3248         }
3249
3250         if (!rule || fsp->location != rule->fd_id)
3251                 return -EINVAL;
3252
3253         fsp->flow_type = rule->flow_type;
3254         if (fsp->flow_type == IP_USER_FLOW) {
3255                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
3256                 fsp->h_u.usr_ip4_spec.proto = 0;
3257                 fsp->m_u.usr_ip4_spec.proto = 0;
3258         }
3259
3260         if (fsp->flow_type == IPV6_USER_FLOW ||
3261             fsp->flow_type == UDP_V6_FLOW ||
3262             fsp->flow_type == TCP_V6_FLOW ||
3263             fsp->flow_type == SCTP_V6_FLOW) {
3264                 /* Reverse the src and dest notion, since the HW views them
3265                  * from Tx perspective where as the user expects it from
3266                  * Rx filter view.
3267                  */
3268                 fsp->h_u.tcp_ip6_spec.psrc = rule->dst_port;
3269                 fsp->h_u.tcp_ip6_spec.pdst = rule->src_port;
3270                 memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6,
3271                        sizeof(__be32) * 4);
3272                 memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6,
3273                        sizeof(__be32) * 4);
3274         } else {
3275                 /* Reverse the src and dest notion, since the HW views them
3276                  * from Tx perspective where as the user expects it from
3277                  * Rx filter view.
3278                  */
3279                 fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
3280                 fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
3281                 fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
3282                 fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
3283         }
3284
3285         switch (rule->flow_type) {
3286         case SCTP_V4_FLOW:
3287                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3288                 break;
3289         case TCP_V4_FLOW:
3290                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3291                 break;
3292         case UDP_V4_FLOW:
3293                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3294                 break;
3295         case SCTP_V6_FLOW:
3296                 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
3297                 break;
3298         case TCP_V6_FLOW:
3299                 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3300                 break;
3301         case UDP_V6_FLOW:
3302                 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3303                 break;
3304         case IP_USER_FLOW:
3305                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3306                 break;
3307         case IPV6_USER_FLOW:
3308                 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
3309                 break;
3310         default:
3311                 /* If we have stored a filter with a flow type not listed here
3312                  * it is almost certainly a driver bug. WARN(), and then
3313                  * assign the input_set as if all fields are enabled to avoid
3314                  * reading unassigned memory.
3315                  */
3316                 WARN(1, "Missing input set index for flow_type %d\n",
3317                      rule->flow_type);
3318                 input_set = 0xFFFFFFFFFFFFFFFFULL;
3319                 goto no_input_set;
3320         }
3321
3322         input_set = i40e_read_fd_input_set(pf, index);
3323
3324 no_input_set:
3325         if (input_set & I40E_L3_V6_SRC_MASK) {
3326                 fsp->m_u.tcp_ip6_spec.ip6src[0] = htonl(0xFFFFFFFF);
3327                 fsp->m_u.tcp_ip6_spec.ip6src[1] = htonl(0xFFFFFFFF);
3328                 fsp->m_u.tcp_ip6_spec.ip6src[2] = htonl(0xFFFFFFFF);
3329                 fsp->m_u.tcp_ip6_spec.ip6src[3] = htonl(0xFFFFFFFF);
3330         }
3331
3332         if (input_set & I40E_L3_V6_DST_MASK) {
3333                 fsp->m_u.tcp_ip6_spec.ip6dst[0] = htonl(0xFFFFFFFF);
3334                 fsp->m_u.tcp_ip6_spec.ip6dst[1] = htonl(0xFFFFFFFF);
3335                 fsp->m_u.tcp_ip6_spec.ip6dst[2] = htonl(0xFFFFFFFF);
3336                 fsp->m_u.tcp_ip6_spec.ip6dst[3] = htonl(0xFFFFFFFF);
3337         }
3338
3339         if (input_set & I40E_L3_SRC_MASK)
3340                 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
3341
3342         if (input_set & I40E_L3_DST_MASK)
3343                 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
3344
3345         if (input_set & I40E_L4_SRC_MASK)
3346                 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
3347
3348         if (input_set & I40E_L4_DST_MASK)
3349                 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
3350
3351         if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
3352                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
3353         else
3354                 fsp->ring_cookie = rule->q_index;
3355
3356         if (rule->vlan_tag) {
3357                 fsp->h_ext.vlan_etype = rule->vlan_etype;
3358                 fsp->m_ext.vlan_etype = htons(0xFFFF);
3359                 fsp->h_ext.vlan_tci = rule->vlan_tag;
3360                 fsp->m_ext.vlan_tci = htons(0xFFFF);
3361                 fsp->flow_type |= FLOW_EXT;
3362         }
3363
3364         if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
3365                 struct i40e_vsi *vsi;
3366
3367                 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
3368                 if (vsi && vsi->type == I40E_VSI_SRIOV) {
3369                         /* VFs are zero-indexed by the driver, but ethtool
3370                          * expects them to be one-indexed, so add one here
3371                          */
3372                         u64 ring_vf = vsi->vf_id + 1;
3373
3374                         ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
3375                         fsp->ring_cookie |= ring_vf;
3376                 }
3377         }
3378
3379         if (rule->flex_filter) {
3380                 userdef.flex_filter = true;
3381                 userdef.flex_word = be16_to_cpu(rule->flex_word);
3382                 userdef.flex_offset = rule->flex_offset;
3383         }
3384
3385         i40e_fill_rx_flow_user_data(fsp, &userdef);
3386
3387         return 0;
3388 }
3389
3390 /**
3391  * i40e_get_rxnfc - command to get RX flow classification rules
3392  * @netdev: network interface device structure
3393  * @cmd: ethtool rxnfc command
3394  * @rule_locs: pointer to store rule data
3395  *
3396  * Returns Success if the command is supported.
3397  **/
3398 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
3399                           u32 *rule_locs)
3400 {
3401         struct i40e_netdev_priv *np = netdev_priv(netdev);
3402         struct i40e_vsi *vsi = np->vsi;
3403         struct i40e_pf *pf = vsi->back;
3404         int ret = -EOPNOTSUPP;
3405
3406         switch (cmd->cmd) {
3407         case ETHTOOL_GRXRINGS:
3408                 cmd->data = vsi->rss_size;
3409                 ret = 0;
3410                 break;
3411         case ETHTOOL_GRXFH:
3412                 ret = i40e_get_rss_hash_opts(pf, cmd);
3413                 break;
3414         case ETHTOOL_GRXCLSRLCNT:
3415                 cmd->rule_cnt = pf->fdir_pf_active_filters;
3416                 /* report total rule count */
3417                 cmd->data = i40e_get_fd_cnt_all(pf);
3418                 ret = 0;
3419                 break;
3420         case ETHTOOL_GRXCLSRULE:
3421                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
3422                 break;
3423         case ETHTOOL_GRXCLSRLALL:
3424                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
3425                 break;
3426         default:
3427                 break;
3428         }
3429
3430         return ret;
3431 }
3432
3433 /**
3434  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
3435  * @nfc: pointer to user request
3436  * @i_setc: bits currently set
3437  *
3438  * Returns value of bits to be set per user request
3439  **/
3440 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
3441 {
3442         u64 i_set = i_setc;
3443         u64 src_l3 = 0, dst_l3 = 0;
3444
3445         if (nfc->data & RXH_L4_B_0_1)
3446                 i_set |= I40E_L4_SRC_MASK;
3447         else
3448                 i_set &= ~I40E_L4_SRC_MASK;
3449         if (nfc->data & RXH_L4_B_2_3)
3450                 i_set |= I40E_L4_DST_MASK;
3451         else
3452                 i_set &= ~I40E_L4_DST_MASK;
3453
3454         if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
3455                 src_l3 = I40E_L3_V6_SRC_MASK;
3456                 dst_l3 = I40E_L3_V6_DST_MASK;
3457         } else if (nfc->flow_type == TCP_V4_FLOW ||
3458                   nfc->flow_type == UDP_V4_FLOW) {
3459                 src_l3 = I40E_L3_SRC_MASK;
3460                 dst_l3 = I40E_L3_DST_MASK;
3461         } else {
3462                 /* Any other flow type are not supported here */
3463                 return i_set;
3464         }
3465
3466         if (nfc->data & RXH_IP_SRC)
3467                 i_set |= src_l3;
3468         else
3469                 i_set &= ~src_l3;
3470         if (nfc->data & RXH_IP_DST)
3471                 i_set |= dst_l3;
3472         else
3473                 i_set &= ~dst_l3;
3474
3475         return i_set;
3476 }
3477
3478 /**
3479  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
3480  * @pf: pointer to the physical function struct
3481  * @nfc: ethtool rxnfc command
3482  *
3483  * Returns Success if the flow input set is supported.
3484  **/
3485 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
3486 {
3487         struct i40e_hw *hw = &pf->hw;
3488         u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
3489                    ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3490         u8 flow_pctype = 0;
3491         u64 i_set, i_setc;
3492
3493         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3494                 dev_err(&pf->pdev->dev,
3495                         "Change of RSS hash input set is not supported when MFP mode is enabled\n");
3496                 return -EOPNOTSUPP;
3497         }
3498
3499         /* RSS does not support anything other than hashing
3500          * to queues on src and dst IPs and ports
3501          */
3502         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
3503                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
3504                 return -EINVAL;
3505
3506         switch (nfc->flow_type) {
3507         case TCP_V4_FLOW:
3508                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3509                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3510                         hena |=
3511                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3512                 break;
3513         case TCP_V6_FLOW:
3514                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3515                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3516                         hena |=
3517                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3518                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3519                         hena |=
3520                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
3521                 break;
3522         case UDP_V4_FLOW:
3523                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3524                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3525                         hena |=
3526                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
3527                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
3528
3529                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3530                 break;
3531         case UDP_V6_FLOW:
3532                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3533                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3534                         hena |=
3535                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
3536                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
3537
3538                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3539                 break;
3540         case AH_ESP_V4_FLOW:
3541         case AH_V4_FLOW:
3542         case ESP_V4_FLOW:
3543         case SCTP_V4_FLOW:
3544                 if ((nfc->data & RXH_L4_B_0_1) ||
3545                     (nfc->data & RXH_L4_B_2_3))
3546                         return -EINVAL;
3547                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3548                 break;
3549         case AH_ESP_V6_FLOW:
3550         case AH_V6_FLOW:
3551         case ESP_V6_FLOW:
3552         case SCTP_V6_FLOW:
3553                 if ((nfc->data & RXH_L4_B_0_1) ||
3554                     (nfc->data & RXH_L4_B_2_3))
3555                         return -EINVAL;
3556                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3557                 break;
3558         case IPV4_FLOW:
3559                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
3560                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3561                 break;
3562         case IPV6_FLOW:
3563                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
3564                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3565                 break;
3566         default:
3567                 return -EINVAL;
3568         }
3569
3570         if (flow_pctype) {
3571                 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3572                                                flow_pctype)) |
3573                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3574                                                flow_pctype)) << 32);
3575                 i_set = i40e_get_rss_hash_bits(nfc, i_setc);
3576                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
3577                                   (u32)i_set);
3578                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
3579                                   (u32)(i_set >> 32));
3580                 hena |= BIT_ULL(flow_pctype);
3581         }
3582
3583         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
3584         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
3585         i40e_flush(hw);
3586
3587         return 0;
3588 }
3589
3590 /**
3591  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
3592  * @vsi: Pointer to the targeted VSI
3593  * @input: The filter to update or NULL to indicate deletion
3594  * @sw_idx: Software index to the filter
3595  * @cmd: The command to get or set Rx flow classification rules
3596  *
3597  * This function updates (or deletes) a Flow Director entry from
3598  * the hlist of the corresponding PF
3599  *
3600  * Returns 0 on success
3601  **/
3602 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
3603                                           struct i40e_fdir_filter *input,
3604                                           u16 sw_idx,
3605                                           struct ethtool_rxnfc *cmd)
3606 {
3607         struct i40e_fdir_filter *rule, *parent;
3608         struct i40e_pf *pf = vsi->back;
3609         struct hlist_node *node2;
3610         int err = -EINVAL;
3611
3612         parent = NULL;
3613         rule = NULL;
3614
3615         hlist_for_each_entry_safe(rule, node2,
3616                                   &pf->fdir_filter_list, fdir_node) {
3617                 /* hash found, or no matching entry */
3618                 if (rule->fd_id >= sw_idx)
3619                         break;
3620                 parent = rule;
3621         }
3622
3623         /* if there is an old rule occupying our place remove it */
3624         if (rule && (rule->fd_id == sw_idx)) {
3625                 /* Remove this rule, since we're either deleting it, or
3626                  * replacing it.
3627                  */
3628                 err = i40e_add_del_fdir(vsi, rule, false);
3629                 hlist_del(&rule->fdir_node);
3630                 kfree(rule);
3631                 pf->fdir_pf_active_filters--;
3632         }
3633
3634         /* If we weren't given an input, this is a delete, so just return the
3635          * error code indicating if there was an entry at the requested slot
3636          */
3637         if (!input)
3638                 return err;
3639
3640         /* Otherwise, install the new rule as requested */
3641         INIT_HLIST_NODE(&input->fdir_node);
3642
3643         /* add filter to the list */
3644         if (parent)
3645                 hlist_add_behind(&input->fdir_node, &parent->fdir_node);
3646         else
3647                 hlist_add_head(&input->fdir_node,
3648                                &pf->fdir_filter_list);
3649
3650         /* update counts */
3651         pf->fdir_pf_active_filters++;
3652
3653         return 0;
3654 }
3655
3656 /**
3657  * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
3658  * @pf: pointer to PF structure
3659  *
3660  * This function searches the list of filters and determines which FLX_PIT
3661  * entries are still required. It will prune any entries which are no longer
3662  * in use after the deletion.
3663  **/
3664 static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
3665 {
3666         struct i40e_flex_pit *entry, *tmp;
3667         struct i40e_fdir_filter *rule;
3668
3669         /* First, we'll check the l3 table */
3670         list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
3671                 bool found = false;
3672
3673                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3674                         if (rule->flow_type != IP_USER_FLOW)
3675                                 continue;
3676                         if (rule->flex_filter &&
3677                             rule->flex_offset == entry->src_offset) {
3678                                 found = true;
3679                                 break;
3680                         }
3681                 }
3682
3683                 /* If we didn't find the filter, then we can prune this entry
3684                  * from the list.
3685                  */
3686                 if (!found) {
3687                         list_del(&entry->list);
3688                         kfree(entry);
3689                 }
3690         }
3691
3692         /* Followed by the L4 table */
3693         list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
3694                 bool found = false;
3695
3696                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3697                         /* Skip this filter if it's L3, since we already
3698                          * checked those in the above loop
3699                          */
3700                         if (rule->flow_type == IP_USER_FLOW)
3701                                 continue;
3702                         if (rule->flex_filter &&
3703                             rule->flex_offset == entry->src_offset) {
3704                                 found = true;
3705                                 break;
3706                         }
3707                 }
3708
3709                 /* If we didn't find the filter, then we can prune this entry
3710                  * from the list.
3711                  */
3712                 if (!found) {
3713                         list_del(&entry->list);
3714                         kfree(entry);
3715                 }
3716         }
3717 }
3718
3719 /**
3720  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
3721  * @vsi: Pointer to the targeted VSI
3722  * @cmd: The command to get or set Rx flow classification rules
3723  *
3724  * The function removes a Flow Director filter entry from the
3725  * hlist of the corresponding PF
3726  *
3727  * Returns 0 on success
3728  */
3729 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
3730                                struct ethtool_rxnfc *cmd)
3731 {
3732         struct ethtool_rx_flow_spec *fsp =
3733                 (struct ethtool_rx_flow_spec *)&cmd->fs;
3734         struct i40e_pf *pf = vsi->back;
3735         int ret = 0;
3736
3737         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3738             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3739                 return -EBUSY;
3740
3741         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3742                 return -EBUSY;
3743
3744         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
3745
3746         i40e_prune_flex_pit_list(pf);
3747
3748         i40e_fdir_check_and_reenable(pf);
3749         return ret;
3750 }
3751
3752 /**
3753  * i40e_unused_pit_index - Find an unused PIT index for given list
3754  * @pf: the PF data structure
3755  *
3756  * Find the first unused flexible PIT index entry. We search both the L3 and
3757  * L4 flexible PIT lists so that the returned index is unique and unused by
3758  * either currently programmed L3 or L4 filters. We use a bit field as storage
3759  * to track which indexes are already used.
3760  **/
3761 static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3762 {
3763         unsigned long available_index = 0xFF;
3764         struct i40e_flex_pit *entry;
3765
3766         /* We need to make sure that the new index isn't in use by either L3
3767          * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3768          * L4 to use the same index.
3769          */
3770
3771         list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3772                 clear_bit(entry->pit_index, &available_index);
3773
3774         list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3775                 clear_bit(entry->pit_index, &available_index);
3776
3777         return find_first_bit(&available_index, 8);
3778 }
3779
3780 /**
3781  * i40e_find_flex_offset - Find an existing flex src_offset
3782  * @flex_pit_list: L3 or L4 flex PIT list
3783  * @src_offset: new src_offset to find
3784  *
3785  * Searches the flex_pit_list for an existing offset. If no offset is
3786  * currently programmed, then this will return an ERR_PTR if there is no space
3787  * to add a new offset, otherwise it returns NULL.
3788  **/
3789 static
3790 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3791                                             u16 src_offset)
3792 {
3793         struct i40e_flex_pit *entry;
3794         int size = 0;
3795
3796         /* Search for the src_offset first. If we find a matching entry
3797          * already programmed, we can simply re-use it.
3798          */
3799         list_for_each_entry(entry, flex_pit_list, list) {
3800                 size++;
3801                 if (entry->src_offset == src_offset)
3802                         return entry;
3803         }
3804
3805         /* If we haven't found an entry yet, then the provided src offset has
3806          * not yet been programmed. We will program the src offset later on,
3807          * but we need to indicate whether there is enough space to do so
3808          * here. We'll make use of ERR_PTR for this purpose.
3809          */
3810         if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3811                 return ERR_PTR(-ENOSPC);
3812
3813         return NULL;
3814 }
3815
3816 /**
3817  * i40e_add_flex_offset - Add src_offset to flex PIT table list
3818  * @flex_pit_list: L3 or L4 flex PIT list
3819  * @src_offset: new src_offset to add
3820  * @pit_index: the PIT index to program
3821  *
3822  * This function programs the new src_offset to the list. It is expected that
3823  * i40e_find_flex_offset has already been tried and returned NULL, indicating
3824  * that this offset is not programmed, and that the list has enough space to
3825  * store another offset.
3826  *
3827  * Returns 0 on success, and negative value on error.
3828  **/
3829 static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3830                                 u16 src_offset,
3831                                 u8 pit_index)
3832 {
3833         struct i40e_flex_pit *new_pit, *entry;
3834
3835         new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
3836         if (!new_pit)
3837                 return -ENOMEM;
3838
3839         new_pit->src_offset = src_offset;
3840         new_pit->pit_index = pit_index;
3841
3842         /* We need to insert this item such that the list is sorted by
3843          * src_offset in ascending order.
3844          */
3845         list_for_each_entry(entry, flex_pit_list, list) {
3846                 if (new_pit->src_offset < entry->src_offset) {
3847                         list_add_tail(&new_pit->list, &entry->list);
3848                         return 0;
3849                 }
3850
3851                 /* If we found an entry with our offset already programmed we
3852                  * can simply return here, after freeing the memory. However,
3853                  * if the pit_index does not match we need to report an error.
3854                  */
3855                 if (new_pit->src_offset == entry->src_offset) {
3856                         int err = 0;
3857
3858                         /* If the PIT index is not the same we can't re-use
3859                          * the entry, so we must report an error.
3860                          */
3861                         if (new_pit->pit_index != entry->pit_index)
3862                                 err = -EINVAL;
3863
3864                         kfree(new_pit);
3865                         return err;
3866                 }
3867         }
3868
3869         /* If we reached here, then we haven't yet added the item. This means
3870          * that we should add the item at the end of the list.
3871          */
3872         list_add_tail(&new_pit->list, flex_pit_list);
3873         return 0;
3874 }
3875
3876 /**
3877  * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
3878  * @pf: Pointer to the PF structure
3879  * @flex_pit_list: list of flexible src offsets in use
3880  * @flex_pit_start: index to first entry for this section of the table
3881  *
3882  * In order to handle flexible data, the hardware uses a table of values
3883  * called the FLX_PIT table. This table is used to indicate which sections of
3884  * the input correspond to what PIT index values. Unfortunately, hardware is
3885  * very restrictive about programming this table. Entries must be ordered by
3886  * src_offset in ascending order, without duplicates. Additionally, unused
3887  * entries must be set to the unused index value, and must have valid size and
3888  * length according to the src_offset ordering.
3889  *
3890  * This function will reprogram the FLX_PIT register from a book-keeping
3891  * structure that we guarantee is already ordered correctly, and has no more
3892  * than 3 entries.
3893  *
3894  * To make things easier, we only support flexible values of one word length,
3895  * rather than allowing variable length flexible values.
3896  **/
3897 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
3898                                       struct list_head *flex_pit_list,
3899                                       int flex_pit_start)
3900 {
3901         struct i40e_flex_pit *entry = NULL;
3902         u16 last_offset = 0;
3903         int i = 0, j = 0;
3904
3905         /* First, loop over the list of flex PIT entries, and reprogram the
3906          * registers.
3907          */
3908         list_for_each_entry(entry, flex_pit_list, list) {
3909                 /* We have to be careful when programming values for the
3910                  * largest SRC_OFFSET value. It is possible that adding
3911                  * additional empty values at the end would overflow the space
3912                  * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
3913                  * we check here and add the empty values prior to adding the
3914                  * largest value.
3915                  *
3916                  * To determine this, we will use a loop from i+1 to 3, which
3917                  * will determine whether the unused entries would have valid
3918                  * SRC_OFFSET. Note that there cannot be extra entries past
3919                  * this value, because the only valid values would have been
3920                  * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
3921                  * have been added to the list in the first place.
3922                  */
3923                 for (j = i + 1; j < 3; j++) {
3924                         u16 offset = entry->src_offset + j;
3925                         int index = flex_pit_start + i;
3926                         u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3927                                                        1,
3928                                                        offset - 3);
3929
3930                         if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
3931                                 i40e_write_rx_ctl(&pf->hw,
3932                                                   I40E_PRTQF_FLX_PIT(index),
3933                                                   value);
3934                                 i++;
3935                         }
3936                 }
3937
3938                 /* Now, we can program the actual value into the table */
3939                 i40e_write_rx_ctl(&pf->hw,
3940                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3941                                   I40E_FLEX_PREP_VAL(entry->pit_index + 50,
3942                                                      1,
3943                                                      entry->src_offset));
3944                 i++;
3945         }
3946
3947         /* In order to program the last entries in the table, we need to
3948          * determine the valid offset. If the list is empty, we'll just start
3949          * with 0. Otherwise, we'll start with the last item offset and add 1.
3950          * This ensures that all entries have valid sizes. If we don't do this
3951          * correctly, the hardware will disable flexible field parsing.
3952          */
3953         if (!list_empty(flex_pit_list))
3954                 last_offset = list_prev_entry(entry, list)->src_offset + 1;
3955
3956         for (; i < 3; i++, last_offset++) {
3957                 i40e_write_rx_ctl(&pf->hw,
3958                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3959                                   I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3960                                                      1,
3961                                                      last_offset));
3962         }
3963 }
3964
3965 /**
3966  * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
3967  * @pf: pointer to the PF structure
3968  *
3969  * This function reprograms both the L3 and L4 FLX_PIT tables. See the
3970  * internal helper function for implementation details.
3971  **/
3972 static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
3973 {
3974         __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
3975                                   I40E_FLEX_PIT_IDX_START_L3);
3976
3977         __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
3978                                   I40E_FLEX_PIT_IDX_START_L4);
3979
3980         /* We also need to program the L3 and L4 GLQF ORT register */
3981         i40e_write_rx_ctl(&pf->hw,
3982                           I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
3983                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
3984                                             3, 1));
3985
3986         i40e_write_rx_ctl(&pf->hw,
3987                           I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
3988                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
3989                                             3, 1));
3990 }
3991
3992 /**
3993  * i40e_flow_str - Converts a flow_type into a human readable string
3994  * @fsp: the flow specification
3995  *
3996  * Currently only flow types we support are included here, and the string
3997  * value attempts to match what ethtool would use to configure this flow type.
3998  **/
3999 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
4000 {
4001         switch (fsp->flow_type & ~FLOW_EXT) {
4002         case TCP_V4_FLOW:
4003                 return "tcp4";
4004         case UDP_V4_FLOW:
4005                 return "udp4";
4006         case SCTP_V4_FLOW:
4007                 return "sctp4";
4008         case IP_USER_FLOW:
4009                 return "ip4";
4010         case TCP_V6_FLOW:
4011                 return "tcp6";
4012         case UDP_V6_FLOW:
4013                 return "udp6";
4014         case SCTP_V6_FLOW:
4015                 return "sctp6";
4016         case IPV6_USER_FLOW:
4017                 return "ip6";
4018         default:
4019                 return "unknown";
4020         }
4021 }
4022
4023 /**
4024  * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
4025  * @pit_index: PIT index to convert
4026  *
4027  * Returns the mask for a given PIT index. Will return 0 if the pit_index is
4028  * of range.
4029  **/
4030 static u64 i40e_pit_index_to_mask(int pit_index)
4031 {
4032         switch (pit_index) {
4033         case 0:
4034                 return I40E_FLEX_50_MASK;
4035         case 1:
4036                 return I40E_FLEX_51_MASK;
4037         case 2:
4038                 return I40E_FLEX_52_MASK;
4039         case 3:
4040                 return I40E_FLEX_53_MASK;
4041         case 4:
4042                 return I40E_FLEX_54_MASK;
4043         case 5:
4044                 return I40E_FLEX_55_MASK;
4045         case 6:
4046                 return I40E_FLEX_56_MASK;
4047         case 7:
4048                 return I40E_FLEX_57_MASK;
4049         default:
4050                 return 0;
4051         }
4052 }
4053
4054 /**
4055  * i40e_print_input_set - Show changes between two input sets
4056  * @vsi: the vsi being configured
4057  * @old: the old input set
4058  * @new: the new input set
4059  *
4060  * Print the difference between old and new input sets by showing which series
4061  * of words are toggled on or off. Only displays the bits we actually support
4062  * changing.
4063  **/
4064 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
4065 {
4066         struct i40e_pf *pf = vsi->back;
4067         bool old_value, new_value;
4068         int i;
4069
4070         old_value = !!(old & I40E_L3_SRC_MASK);
4071         new_value = !!(new & I40E_L3_SRC_MASK);
4072         if (old_value != new_value)
4073                 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
4074                            old_value ? "ON" : "OFF",
4075                            new_value ? "ON" : "OFF");
4076
4077         old_value = !!(old & I40E_L3_DST_MASK);
4078         new_value = !!(new & I40E_L3_DST_MASK);
4079         if (old_value != new_value)
4080                 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
4081                            old_value ? "ON" : "OFF",
4082                            new_value ? "ON" : "OFF");
4083
4084         old_value = !!(old & I40E_L4_SRC_MASK);
4085         new_value = !!(new & I40E_L4_SRC_MASK);
4086         if (old_value != new_value)
4087                 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
4088                            old_value ? "ON" : "OFF",
4089                            new_value ? "ON" : "OFF");
4090
4091         old_value = !!(old & I40E_L4_DST_MASK);
4092         new_value = !!(new & I40E_L4_DST_MASK);
4093         if (old_value != new_value)
4094                 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
4095                            old_value ? "ON" : "OFF",
4096                            new_value ? "ON" : "OFF");
4097
4098         old_value = !!(old & I40E_VERIFY_TAG_MASK);
4099         new_value = !!(new & I40E_VERIFY_TAG_MASK);
4100         if (old_value != new_value)
4101                 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
4102                            old_value ? "ON" : "OFF",
4103                            new_value ? "ON" : "OFF");
4104
4105         /* Show change of flexible filter entries */
4106         for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
4107                 u64 flex_mask = i40e_pit_index_to_mask(i);
4108
4109                 old_value = !!(old & flex_mask);
4110                 new_value = !!(new & flex_mask);
4111                 if (old_value != new_value)
4112                         netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
4113                                    i,
4114                                    old_value ? "ON" : "OFF",
4115                                    new_value ? "ON" : "OFF");
4116         }
4117
4118         netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
4119                    old);
4120         netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
4121                    new);
4122 }
4123
4124 /**
4125  * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
4126  * @vsi: pointer to the targeted VSI
4127  * @fsp: pointer to Rx flow specification
4128  * @userdef: userdefined data from flow specification
4129  *
4130  * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
4131  * for partial matches exists with a few limitations. First, hardware only
4132  * supports masking by word boundary (2 bytes) and not per individual bit.
4133  * Second, hardware is limited to using one mask for a flow type and cannot
4134  * use a separate mask for each filter.
4135  *
4136  * To support these limitations, if we already have a configured filter for
4137  * the specified type, this function enforces that new filters of the type
4138  * match the configured input set. Otherwise, if we do not have a filter of
4139  * the specified type, we allow the input set to be updated to match the
4140  * desired filter.
4141  *
4142  * To help ensure that administrators understand why filters weren't displayed
4143  * as supported, we print a diagnostic message displaying how the input set
4144  * would change and warning to delete the preexisting filters if required.
4145  *
4146  * Returns 0 on successful input set match, and a negative return code on
4147  * failure.
4148  **/
4149 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
4150                                      struct ethtool_rx_flow_spec *fsp,
4151                                      struct i40e_rx_flow_userdef *userdef)
4152 {
4153         static const __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff),
4154                 cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff),
4155                 cpu_to_be32(0xffffffff)};
4156         struct ethtool_tcpip6_spec *tcp_ip6_spec;
4157         struct ethtool_usrip6_spec *usr_ip6_spec;
4158         struct ethtool_tcpip4_spec *tcp_ip4_spec;
4159         struct ethtool_usrip4_spec *usr_ip4_spec;
4160         struct i40e_pf *pf = vsi->back;
4161         u64 current_mask, new_mask;
4162         bool new_flex_offset = false;
4163         bool flex_l3 = false;
4164         u16 *fdir_filter_count;
4165         u16 index, src_offset = 0;
4166         u8 pit_index = 0;
4167         int err;
4168
4169         switch (fsp->flow_type & ~FLOW_EXT) {
4170         case SCTP_V4_FLOW:
4171                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
4172                 fdir_filter_count = &pf->fd_sctp4_filter_cnt;
4173                 break;
4174         case TCP_V4_FLOW:
4175                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
4176                 fdir_filter_count = &pf->fd_tcp4_filter_cnt;
4177                 break;
4178         case UDP_V4_FLOW:
4179                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
4180                 fdir_filter_count = &pf->fd_udp4_filter_cnt;
4181                 break;
4182         case SCTP_V6_FLOW:
4183                 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
4184                 fdir_filter_count = &pf->fd_sctp6_filter_cnt;
4185                 break;
4186         case TCP_V6_FLOW:
4187                 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
4188                 fdir_filter_count = &pf->fd_tcp6_filter_cnt;
4189                 break;
4190         case UDP_V6_FLOW:
4191                 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
4192                 fdir_filter_count = &pf->fd_udp6_filter_cnt;
4193                 break;
4194         case IP_USER_FLOW:
4195                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
4196                 fdir_filter_count = &pf->fd_ip4_filter_cnt;
4197                 flex_l3 = true;
4198                 break;
4199         case IPV6_USER_FLOW:
4200                 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
4201                 fdir_filter_count = &pf->fd_ip6_filter_cnt;
4202                 flex_l3 = true;
4203                 break;
4204         default:
4205                 return -EOPNOTSUPP;
4206         }
4207
4208         /* Read the current input set from register memory. */
4209         current_mask = i40e_read_fd_input_set(pf, index);
4210         new_mask = current_mask;
4211
4212         /* Determine, if any, the required changes to the input set in order
4213          * to support the provided mask.
4214          *
4215          * Hardware only supports masking at word (2 byte) granularity and does
4216          * not support full bitwise masking. This implementation simplifies
4217          * even further and only supports fully enabled or fully disabled
4218          * masks for each field, even though we could split the ip4src and
4219          * ip4dst fields.
4220          */
4221         switch (fsp->flow_type & ~FLOW_EXT) {
4222         case SCTP_V4_FLOW:
4223                 new_mask &= ~I40E_VERIFY_TAG_MASK;
4224                 fallthrough;
4225         case TCP_V4_FLOW:
4226         case UDP_V4_FLOW:
4227                 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
4228
4229                 /* IPv4 source address */
4230                 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4231                         new_mask |= I40E_L3_SRC_MASK;
4232                 else if (!tcp_ip4_spec->ip4src)
4233                         new_mask &= ~I40E_L3_SRC_MASK;
4234                 else
4235                         return -EOPNOTSUPP;
4236
4237                 /* IPv4 destination address */
4238                 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4239                         new_mask |= I40E_L3_DST_MASK;
4240                 else if (!tcp_ip4_spec->ip4dst)
4241                         new_mask &= ~I40E_L3_DST_MASK;
4242                 else
4243                         return -EOPNOTSUPP;
4244
4245                 /* L4 source port */
4246                 if (tcp_ip4_spec->psrc == htons(0xFFFF))
4247                         new_mask |= I40E_L4_SRC_MASK;
4248                 else if (!tcp_ip4_spec->psrc)
4249                         new_mask &= ~I40E_L4_SRC_MASK;
4250                 else
4251                         return -EOPNOTSUPP;
4252
4253                 /* L4 destination port */
4254                 if (tcp_ip4_spec->pdst == htons(0xFFFF))
4255                         new_mask |= I40E_L4_DST_MASK;
4256                 else if (!tcp_ip4_spec->pdst)
4257                         new_mask &= ~I40E_L4_DST_MASK;
4258                 else
4259                         return -EOPNOTSUPP;
4260
4261                 /* Filtering on Type of Service is not supported. */
4262                 if (tcp_ip4_spec->tos)
4263                         return -EOPNOTSUPP;
4264
4265                 break;
4266         case SCTP_V6_FLOW:
4267                 new_mask &= ~I40E_VERIFY_TAG_MASK;
4268                 fallthrough;
4269         case TCP_V6_FLOW:
4270         case UDP_V6_FLOW:
4271                 tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec;
4272
4273                 /* Check if user provided IPv6 source address. */
4274                 if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6src,
4275                                     (struct in6_addr *)&ipv6_full_mask))
4276                         new_mask |= I40E_L3_V6_SRC_MASK;
4277                 else if (ipv6_addr_any((struct in6_addr *)
4278                                        &tcp_ip6_spec->ip6src))
4279                         new_mask &= ~I40E_L3_V6_SRC_MASK;
4280                 else
4281                         return -EOPNOTSUPP;
4282
4283                 /* Check if user provided destination address. */
4284                 if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6dst,
4285                                     (struct in6_addr *)&ipv6_full_mask))
4286                         new_mask |= I40E_L3_V6_DST_MASK;
4287                 else if (ipv6_addr_any((struct in6_addr *)
4288                                        &tcp_ip6_spec->ip6dst))
4289                         new_mask &= ~I40E_L3_V6_DST_MASK;
4290                 else
4291                         return -EOPNOTSUPP;
4292
4293                 /* L4 source port */
4294                 if (tcp_ip6_spec->psrc == htons(0xFFFF))
4295                         new_mask |= I40E_L4_SRC_MASK;
4296                 else if (!tcp_ip6_spec->psrc)
4297                         new_mask &= ~I40E_L4_SRC_MASK;
4298                 else
4299                         return -EOPNOTSUPP;
4300
4301                 /* L4 destination port */
4302                 if (tcp_ip6_spec->pdst == htons(0xFFFF))
4303                         new_mask |= I40E_L4_DST_MASK;
4304                 else if (!tcp_ip6_spec->pdst)
4305                         new_mask &= ~I40E_L4_DST_MASK;
4306                 else
4307                         return -EOPNOTSUPP;
4308
4309                 /* Filtering on Traffic Classes is not supported. */
4310                 if (tcp_ip6_spec->tclass)
4311                         return -EOPNOTSUPP;
4312                 break;
4313         case IP_USER_FLOW:
4314                 usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
4315
4316                 /* IPv4 source address */
4317                 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4318                         new_mask |= I40E_L3_SRC_MASK;
4319                 else if (!usr_ip4_spec->ip4src)
4320                         new_mask &= ~I40E_L3_SRC_MASK;
4321                 else
4322                         return -EOPNOTSUPP;
4323
4324                 /* IPv4 destination address */
4325                 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4326                         new_mask |= I40E_L3_DST_MASK;
4327                 else if (!usr_ip4_spec->ip4dst)
4328                         new_mask &= ~I40E_L3_DST_MASK;
4329                 else
4330                         return -EOPNOTSUPP;
4331
4332                 /* First 4 bytes of L4 header */
4333                 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4334                         new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4335                 else if (!usr_ip4_spec->l4_4_bytes)
4336                         new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4337                 else
4338                         return -EOPNOTSUPP;
4339
4340                 /* Filtering on Type of Service is not supported. */
4341                 if (usr_ip4_spec->tos)
4342                         return -EOPNOTSUPP;
4343
4344                 /* Filtering on IP version is not supported */
4345                 if (usr_ip4_spec->ip_ver)
4346                         return -EINVAL;
4347
4348                 /* Filtering on L4 protocol is not supported */
4349                 if (usr_ip4_spec->proto)
4350                         return -EINVAL;
4351
4352                 break;
4353         case IPV6_USER_FLOW:
4354                 usr_ip6_spec = &fsp->m_u.usr_ip6_spec;
4355
4356                 /* Check if user provided IPv6 source address. */
4357                 if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6src,
4358                                     (struct in6_addr *)&ipv6_full_mask))
4359                         new_mask |= I40E_L3_V6_SRC_MASK;
4360                 else if (ipv6_addr_any((struct in6_addr *)
4361                                        &usr_ip6_spec->ip6src))
4362                         new_mask &= ~I40E_L3_V6_SRC_MASK;
4363                 else
4364                         return -EOPNOTSUPP;
4365
4366                 /* Check if user provided destination address. */
4367                 if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6dst,
4368                                     (struct in6_addr *)&ipv6_full_mask))
4369                         new_mask |= I40E_L3_V6_DST_MASK;
4370                 else if (ipv6_addr_any((struct in6_addr *)
4371                                        &usr_ip6_spec->ip6src))
4372                         new_mask &= ~I40E_L3_V6_DST_MASK;
4373                 else
4374                         return -EOPNOTSUPP;
4375
4376                 if (usr_ip6_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4377                         new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4378                 else if (!usr_ip6_spec->l4_4_bytes)
4379                         new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4380                 else
4381                         return -EOPNOTSUPP;
4382
4383                 /* Filtering on Traffic class is not supported. */
4384                 if (usr_ip6_spec->tclass)
4385                         return -EOPNOTSUPP;
4386
4387                 /* Filtering on L4 protocol is not supported */
4388                 if (usr_ip6_spec->l4_proto)
4389                         return -EINVAL;
4390
4391                 break;
4392         default:
4393                 return -EOPNOTSUPP;
4394         }
4395
4396         if (fsp->flow_type & FLOW_EXT) {
4397                 /* Allow only 802.1Q and no etype defined, as
4398                  * later it's modified to 0x8100
4399                  */
4400                 if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) &&
4401                     fsp->h_ext.vlan_etype != 0)
4402                         return -EOPNOTSUPP;
4403                 if (fsp->m_ext.vlan_tci == htons(0xFFFF))
4404                         new_mask |= I40E_VLAN_SRC_MASK;
4405                 else
4406                         new_mask &= ~I40E_VLAN_SRC_MASK;
4407         }
4408
4409         /* First, clear all flexible filter entries */
4410         new_mask &= ~I40E_FLEX_INPUT_MASK;
4411
4412         /* If we have a flexible filter, try to add this offset to the correct
4413          * flexible filter PIT list. Once finished, we can update the mask.
4414          * If the src_offset changed, we will get a new mask value which will
4415          * trigger an input set change.
4416          */
4417         if (userdef->flex_filter) {
4418                 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
4419
4420                 /* Flexible offset must be even, since the flexible payload
4421                  * must be aligned on 2-byte boundary.
4422                  */
4423                 if (userdef->flex_offset & 0x1) {
4424                         dev_warn(&pf->pdev->dev,
4425                                  "Flexible data offset must be 2-byte aligned\n");
4426                         return -EINVAL;
4427                 }
4428
4429                 src_offset = userdef->flex_offset >> 1;
4430
4431                 /* FLX_PIT source offset value is only so large */
4432                 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
4433                         dev_warn(&pf->pdev->dev,
4434                                  "Flexible data must reside within first 64 bytes of the packet payload\n");
4435                         return -EINVAL;
4436                 }
4437
4438                 /* See if this offset has already been programmed. If we get
4439                  * an ERR_PTR, then the filter is not safe to add. Otherwise,
4440                  * if we get a NULL pointer, this means we will need to add
4441                  * the offset.
4442                  */
4443                 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
4444                                                  src_offset);
4445                 if (IS_ERR(flex_pit))
4446                         return PTR_ERR(flex_pit);
4447
4448                 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
4449                  * packet types, and thus we need to program both L3 and L4
4450                  * flexible values. These must have identical flexible index,
4451                  * as otherwise we can't correctly program the input set. So
4452                  * we'll find both an L3 and L4 index and make sure they are
4453                  * the same.
4454                  */
4455                 if (flex_l3) {
4456                         l3_flex_pit =
4457                                 i40e_find_flex_offset(&pf->l3_flex_pit_list,
4458                                                       src_offset);
4459                         if (IS_ERR(l3_flex_pit))
4460                                 return PTR_ERR(l3_flex_pit);
4461
4462                         if (flex_pit) {
4463                                 /* If we already had a matching L4 entry, we
4464                                  * need to make sure that the L3 entry we
4465                                  * obtained uses the same index.
4466                                  */
4467                                 if (l3_flex_pit) {
4468                                         if (l3_flex_pit->pit_index !=
4469                                             flex_pit->pit_index) {
4470                                                 return -EINVAL;
4471                                         }
4472                                 } else {
4473                                         new_flex_offset = true;
4474                                 }
4475                         } else {
4476                                 flex_pit = l3_flex_pit;
4477                         }
4478                 }
4479
4480                 /* If we didn't find an existing flex offset, we need to
4481                  * program a new one. However, we don't immediately program it
4482                  * here because we will wait to program until after we check
4483                  * that it is safe to change the input set.
4484                  */
4485                 if (!flex_pit) {
4486                         new_flex_offset = true;
4487                         pit_index = i40e_unused_pit_index(pf);
4488                 } else {
4489                         pit_index = flex_pit->pit_index;
4490                 }
4491
4492                 /* Update the mask with the new offset */
4493                 new_mask |= i40e_pit_index_to_mask(pit_index);
4494         }
4495
4496         /* If the mask and flexible filter offsets for this filter match the
4497          * currently programmed values we don't need any input set change, so
4498          * this filter is safe to install.
4499          */
4500         if (new_mask == current_mask && !new_flex_offset)
4501                 return 0;
4502
4503         netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
4504                    i40e_flow_str(fsp));
4505         i40e_print_input_set(vsi, current_mask, new_mask);
4506         if (new_flex_offset) {
4507                 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
4508                            pit_index, src_offset);
4509         }
4510
4511         /* Hardware input sets are global across multiple ports, so even the
4512          * main port cannot change them when in MFP mode as this would impact
4513          * any filters on the other ports.
4514          */
4515         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4516                 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
4517                 return -EOPNOTSUPP;
4518         }
4519
4520         /* This filter requires us to update the input set. However, hardware
4521          * only supports one input set per flow type, and does not support
4522          * separate masks for each filter. This means that we can only support
4523          * a single mask for all filters of a specific type.
4524          *
4525          * If we have preexisting filters, they obviously depend on the
4526          * current programmed input set. Display a diagnostic message in this
4527          * case explaining why the filter could not be accepted.
4528          */
4529         if (*fdir_filter_count) {
4530                 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
4531                           i40e_flow_str(fsp),
4532                           *fdir_filter_count);
4533                 return -EOPNOTSUPP;
4534         }
4535
4536         i40e_write_fd_input_set(pf, index, new_mask);
4537
4538         /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
4539          * frames. If we're programming the input set for IPv4/Other, we also
4540          * need to program the IPv4/Fragmented input set. Since we don't have
4541          * separate support, we'll always assume and enforce that the two flow
4542          * types must have matching input sets.
4543          */
4544         if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
4545                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
4546                                         new_mask);
4547
4548         /* Add the new offset and update table, if necessary */
4549         if (new_flex_offset) {
4550                 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
4551                                            pit_index);
4552                 if (err)
4553                         return err;
4554
4555                 if (flex_l3) {
4556                         err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
4557                                                    src_offset,
4558                                                    pit_index);
4559                         if (err)
4560                                 return err;
4561                 }
4562
4563                 i40e_reprogram_flex_pit(pf);
4564         }
4565
4566         return 0;
4567 }
4568
4569 /**
4570  * i40e_match_fdir_filter - Return true of two filters match
4571  * @a: pointer to filter struct
4572  * @b: pointer to filter struct
4573  *
4574  * Returns true if the two filters match exactly the same criteria. I.e. they
4575  * match the same flow type and have the same parameters. We don't need to
4576  * check any input-set since all filters of the same flow type must use the
4577  * same input set.
4578  **/
4579 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
4580                                    struct i40e_fdir_filter *b)
4581 {
4582         /* The filters do not much if any of these criteria differ. */
4583         if (a->dst_ip != b->dst_ip ||
4584             a->src_ip != b->src_ip ||
4585             a->dst_port != b->dst_port ||
4586             a->src_port != b->src_port ||
4587             a->flow_type != b->flow_type ||
4588             a->ipl4_proto != b->ipl4_proto ||
4589             a->vlan_tag != b->vlan_tag ||
4590             a->vlan_etype != b->vlan_etype)
4591                 return false;
4592
4593         return true;
4594 }
4595
4596 /**
4597  * i40e_disallow_matching_filters - Check that new filters differ
4598  * @vsi: pointer to the targeted VSI
4599  * @input: new filter to check
4600  *
4601  * Due to hardware limitations, it is not possible for two filters that match
4602  * similar criteria to be programmed at the same time. This is true for a few
4603  * reasons:
4604  *
4605  * (a) all filters matching a particular flow type must use the same input
4606  * set, that is they must match the same criteria.
4607  * (b) different flow types will never match the same packet, as the flow type
4608  * is decided by hardware before checking which rules apply.
4609  * (c) hardware has no way to distinguish which order filters apply in.
4610  *
4611  * Due to this, we can't really support using the location data to order
4612  * filters in the hardware parsing. It is technically possible for the user to
4613  * request two filters matching the same criteria but which select different
4614  * queues. In this case, rather than keep both filters in the list, we reject
4615  * the 2nd filter when the user requests adding it.
4616  *
4617  * This avoids needing to track location for programming the filter to
4618  * hardware, and ensures that we avoid some strange scenarios involving
4619  * deleting filters which match the same criteria.
4620  **/
4621 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
4622                                           struct i40e_fdir_filter *input)
4623 {
4624         struct i40e_pf *pf = vsi->back;
4625         struct i40e_fdir_filter *rule;
4626         struct hlist_node *node2;
4627
4628         /* Loop through every filter, and check that it doesn't match */
4629         hlist_for_each_entry_safe(rule, node2,
4630                                   &pf->fdir_filter_list, fdir_node) {
4631                 /* Don't check the filters match if they share the same fd_id,
4632                  * since the new filter is actually just updating the target
4633                  * of the old filter.
4634                  */
4635                 if (rule->fd_id == input->fd_id)
4636                         continue;
4637
4638                 /* If any filters match, then print a warning message to the
4639                  * kernel message buffer and bail out.
4640                  */
4641                 if (i40e_match_fdir_filter(rule, input)) {
4642                         dev_warn(&pf->pdev->dev,
4643                                  "Existing user defined filter %d already matches this flow.\n",
4644                                  rule->fd_id);
4645                         return -EINVAL;
4646                 }
4647         }
4648
4649         return 0;
4650 }
4651
4652 /**
4653  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
4654  * @vsi: pointer to the targeted VSI
4655  * @cmd: command to get or set RX flow classification rules
4656  *
4657  * Add Flow Director filters for a specific flow spec based on their
4658  * protocol.  Returns 0 if the filters were successfully added.
4659  **/
4660 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
4661                                  struct ethtool_rxnfc *cmd)
4662 {
4663         struct i40e_rx_flow_userdef userdef;
4664         struct ethtool_rx_flow_spec *fsp;
4665         struct i40e_fdir_filter *input;
4666         u16 dest_vsi = 0, q_index = 0;
4667         struct i40e_pf *pf;
4668         int ret = -EINVAL;
4669         u8 dest_ctl;
4670
4671         if (!vsi)
4672                 return -EINVAL;
4673         pf = vsi->back;
4674
4675         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
4676                 return -EOPNOTSUPP;
4677
4678         if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
4679                 return -ENOSPC;
4680
4681         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
4682             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
4683                 return -EBUSY;
4684
4685         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
4686                 return -EBUSY;
4687
4688         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
4689
4690         /* Parse the user-defined field */
4691         if (i40e_parse_rx_flow_user_data(fsp, &userdef))
4692                 return -EINVAL;
4693
4694         /* Extended MAC field is not supported */
4695         if (fsp->flow_type & FLOW_MAC_EXT)
4696                 return -EINVAL;
4697
4698         ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
4699         if (ret)
4700                 return ret;
4701
4702         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
4703                               pf->hw.func_caps.fd_filters_guaranteed)) {
4704                 return -EINVAL;
4705         }
4706
4707         /* ring_cookie is either the drop index, or is a mask of the queue
4708          * index and VF id we wish to target.
4709          */
4710         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
4711                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4712         } else {
4713                 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
4714                 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
4715
4716                 if (!vf) {
4717                         if (ring >= vsi->num_queue_pairs)
4718                                 return -EINVAL;
4719                         dest_vsi = vsi->id;
4720                 } else {
4721                         /* VFs are zero-indexed, so we subtract one here */
4722                         vf--;
4723
4724                         if (vf >= pf->num_alloc_vfs)
4725                                 return -EINVAL;
4726                         if (ring >= pf->vf[vf].num_queue_pairs)
4727                                 return -EINVAL;
4728                         dest_vsi = pf->vf[vf].lan_vsi_id;
4729                 }
4730                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
4731                 q_index = ring;
4732         }
4733
4734         input = kzalloc(sizeof(*input), GFP_KERNEL);
4735
4736         if (!input)
4737                 return -ENOMEM;
4738
4739         input->fd_id = fsp->location;
4740         input->q_index = q_index;
4741         input->dest_vsi = dest_vsi;
4742         input->dest_ctl = dest_ctl;
4743         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4744         input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4745         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4746         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4747         input->flow_type = fsp->flow_type & ~FLOW_EXT;
4748
4749         input->vlan_etype = fsp->h_ext.vlan_etype;
4750         if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci)
4751                 input->vlan_etype = cpu_to_be16(ETH_P_8021Q);
4752         if (fsp->m_ext.vlan_tci && input->vlan_etype)
4753                 input->vlan_tag = fsp->h_ext.vlan_tci;
4754         if (input->flow_type == IPV6_USER_FLOW ||
4755             input->flow_type == UDP_V6_FLOW ||
4756             input->flow_type == TCP_V6_FLOW ||
4757             input->flow_type == SCTP_V6_FLOW) {
4758                 /* Reverse the src and dest notion, since the HW expects them
4759                  * to be from Tx perspective where as the input from user is
4760                  * from Rx filter view.
4761                  */
4762                 input->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto;
4763                 input->dst_port = fsp->h_u.tcp_ip6_spec.psrc;
4764                 input->src_port = fsp->h_u.tcp_ip6_spec.pdst;
4765                 memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src,
4766                        sizeof(__be32) * 4);
4767                 memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst,
4768                        sizeof(__be32) * 4);
4769         } else {
4770                 /* Reverse the src and dest notion, since the HW expects them
4771                  * to be from Tx perspective where as the input from user is
4772                  * from Rx filter view.
4773                  */
4774                 input->ipl4_proto = fsp->h_u.usr_ip4_spec.proto;
4775                 input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
4776                 input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4777                 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4778                 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4779         }
4780
4781         if (userdef.flex_filter) {
4782                 input->flex_filter = true;
4783                 input->flex_word = cpu_to_be16(userdef.flex_word);
4784                 input->flex_offset = userdef.flex_offset;
4785         }
4786
4787         /* Avoid programming two filters with identical match criteria. */
4788         ret = i40e_disallow_matching_filters(vsi, input);
4789         if (ret)
4790                 goto free_filter_memory;
4791
4792         /* Add the input filter to the fdir_input_list, possibly replacing
4793          * a previous filter. Do not free the input structure after adding it
4794          * to the list as this would cause a use-after-free bug.
4795          */
4796         i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
4797         ret = i40e_add_del_fdir(vsi, input, true);
4798         if (ret)
4799                 goto remove_sw_rule;
4800         return 0;
4801
4802 remove_sw_rule:
4803         hlist_del(&input->fdir_node);
4804         pf->fdir_pf_active_filters--;
4805 free_filter_memory:
4806         kfree(input);
4807         return ret;
4808 }
4809
4810 /**
4811  * i40e_set_rxnfc - command to set RX flow classification rules
4812  * @netdev: network interface device structure
4813  * @cmd: ethtool rxnfc command
4814  *
4815  * Returns Success if the command is supported.
4816  **/
4817 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
4818 {
4819         struct i40e_netdev_priv *np = netdev_priv(netdev);
4820         struct i40e_vsi *vsi = np->vsi;
4821         struct i40e_pf *pf = vsi->back;
4822         int ret = -EOPNOTSUPP;
4823
4824         switch (cmd->cmd) {
4825         case ETHTOOL_SRXFH:
4826                 ret = i40e_set_rss_hash_opt(pf, cmd);
4827                 break;
4828         case ETHTOOL_SRXCLSRLINS:
4829                 ret = i40e_add_fdir_ethtool(vsi, cmd);
4830                 break;
4831         case ETHTOOL_SRXCLSRLDEL:
4832                 ret = i40e_del_fdir_entry(vsi, cmd);
4833                 break;
4834         default:
4835                 break;
4836         }
4837
4838         return ret;
4839 }
4840
4841 /**
4842  * i40e_max_channels - get Max number of combined channels supported
4843  * @vsi: vsi pointer
4844  **/
4845 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
4846 {
4847         /* TODO: This code assumes DCB and FD is disabled for now. */
4848         return vsi->alloc_queue_pairs;
4849 }
4850
4851 /**
4852  * i40e_get_channels - Get the current channels enabled and max supported etc.
4853  * @dev: network interface device structure
4854  * @ch: ethtool channels structure
4855  *
4856  * We don't support separate tx and rx queues as channels. The other count
4857  * represents how many queues are being used for control. max_combined counts
4858  * how many queue pairs we can support. They may not be mapped 1 to 1 with
4859  * q_vectors since we support a lot more queue pairs than q_vectors.
4860  **/
4861 static void i40e_get_channels(struct net_device *dev,
4862                               struct ethtool_channels *ch)
4863 {
4864         struct i40e_netdev_priv *np = netdev_priv(dev);
4865         struct i40e_vsi *vsi = np->vsi;
4866         struct i40e_pf *pf = vsi->back;
4867
4868         /* report maximum channels */
4869         ch->max_combined = i40e_max_channels(vsi);
4870
4871         /* report info for other vector */
4872         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
4873         ch->max_other = ch->other_count;
4874
4875         /* Note: This code assumes DCB is disabled for now. */
4876         ch->combined_count = vsi->num_queue_pairs;
4877 }
4878
4879 /**
4880  * i40e_set_channels - Set the new channels count.
4881  * @dev: network interface device structure
4882  * @ch: ethtool channels structure
4883  *
4884  * The new channels count may not be the same as requested by the user
4885  * since it gets rounded down to a power of 2 value.
4886  **/
4887 static int i40e_set_channels(struct net_device *dev,
4888                              struct ethtool_channels *ch)
4889 {
4890         const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4891         struct i40e_netdev_priv *np = netdev_priv(dev);
4892         unsigned int count = ch->combined_count;
4893         struct i40e_vsi *vsi = np->vsi;
4894         struct i40e_pf *pf = vsi->back;
4895         struct i40e_fdir_filter *rule;
4896         struct hlist_node *node2;
4897         int new_count;
4898         int err = 0;
4899
4900         /* We do not support setting channels for any other VSI at present */
4901         if (vsi->type != I40E_VSI_MAIN)
4902                 return -EINVAL;
4903
4904         /* We do not support setting channels via ethtool when TCs are
4905          * configured through mqprio
4906          */
4907         if (pf->flags & I40E_FLAG_TC_MQPRIO)
4908                 return -EINVAL;
4909
4910         /* verify they are not requesting separate vectors */
4911         if (!count || ch->rx_count || ch->tx_count)
4912                 return -EINVAL;
4913
4914         /* verify other_count has not changed */
4915         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
4916                 return -EINVAL;
4917
4918         /* verify the number of channels does not exceed hardware limits */
4919         if (count > i40e_max_channels(vsi))
4920                 return -EINVAL;
4921
4922         /* verify that the number of channels does not invalidate any current
4923          * flow director rules
4924          */
4925         hlist_for_each_entry_safe(rule, node2,
4926                                   &pf->fdir_filter_list, fdir_node) {
4927                 if (rule->dest_ctl != drop && count <= rule->q_index) {
4928                         dev_warn(&pf->pdev->dev,
4929                                  "Existing user defined filter %d assigns flow to queue %d\n",
4930                                  rule->fd_id, rule->q_index);
4931                         err = -EINVAL;
4932                 }
4933         }
4934
4935         if (err) {
4936                 dev_err(&pf->pdev->dev,
4937                         "Existing filter rules must be deleted to reduce combined channel count to %d\n",
4938                         count);
4939                 return err;
4940         }
4941
4942         /* update feature limits from largest to smallest supported values */
4943         /* TODO: Flow director limit, DCB etc */
4944
4945         /* use rss_reconfig to rebuild with new queue count and update traffic
4946          * class queue mapping
4947          */
4948         new_count = i40e_reconfig_rss_queues(pf, count);
4949         if (new_count > 0)
4950                 return 0;
4951         else
4952                 return -EINVAL;
4953 }
4954
4955 /**
4956  * i40e_get_rxfh_key_size - get the RSS hash key size
4957  * @netdev: network interface device structure
4958  *
4959  * Returns the table size.
4960  **/
4961 static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
4962 {
4963         return I40E_HKEY_ARRAY_SIZE;
4964 }
4965
4966 /**
4967  * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
4968  * @netdev: network interface device structure
4969  *
4970  * Returns the table size.
4971  **/
4972 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
4973 {
4974         return I40E_HLUT_ARRAY_SIZE;
4975 }
4976
4977 /**
4978  * i40e_get_rxfh - get the rx flow hash indirection table
4979  * @netdev: network interface device structure
4980  * @indir: indirection table
4981  * @key: hash key
4982  * @hfunc: hash function
4983  *
4984  * Reads the indirection table directly from the hardware. Returns 0 on
4985  * success.
4986  **/
4987 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
4988                          u8 *hfunc)
4989 {
4990         struct i40e_netdev_priv *np = netdev_priv(netdev);
4991         struct i40e_vsi *vsi = np->vsi;
4992         u8 *lut, *seed = NULL;
4993         int ret;
4994         u16 i;
4995
4996         if (hfunc)
4997                 *hfunc = ETH_RSS_HASH_TOP;
4998
4999         if (!indir)
5000                 return 0;
5001
5002         seed = key;
5003         lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5004         if (!lut)
5005                 return -ENOMEM;
5006         ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
5007         if (ret)
5008                 goto out;
5009         for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5010                 indir[i] = (u32)(lut[i]);
5011
5012 out:
5013         kfree(lut);
5014
5015         return ret;
5016 }
5017
5018 /**
5019  * i40e_set_rxfh - set the rx flow hash indirection table
5020  * @netdev: network interface device structure
5021  * @indir: indirection table
5022  * @key: hash key
5023  * @hfunc: hash function to use
5024  *
5025  * Returns -EINVAL if the table specifies an invalid queue id, otherwise
5026  * returns 0 after programming the table.
5027  **/
5028 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
5029                          const u8 *key, const u8 hfunc)
5030 {
5031         struct i40e_netdev_priv *np = netdev_priv(netdev);
5032         struct i40e_vsi *vsi = np->vsi;
5033         struct i40e_pf *pf = vsi->back;
5034         u8 *seed = NULL;
5035         u16 i;
5036
5037         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
5038                 return -EOPNOTSUPP;
5039
5040         if (key) {
5041                 if (!vsi->rss_hkey_user) {
5042                         vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
5043                                                      GFP_KERNEL);
5044                         if (!vsi->rss_hkey_user)
5045                                 return -ENOMEM;
5046                 }
5047                 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
5048                 seed = vsi->rss_hkey_user;
5049         }
5050         if (!vsi->rss_lut_user) {
5051                 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5052                 if (!vsi->rss_lut_user)
5053                         return -ENOMEM;
5054         }
5055
5056         /* Each 32 bits pointed by 'indir' is stored with a lut entry */
5057         if (indir)
5058                 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5059                         vsi->rss_lut_user[i] = (u8)(indir[i]);
5060         else
5061                 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
5062                                   vsi->rss_size);
5063
5064         return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
5065                                I40E_HLUT_ARRAY_SIZE);
5066 }
5067
5068 /**
5069  * i40e_get_priv_flags - report device private flags
5070  * @dev: network interface device structure
5071  *
5072  * The get string set count and the string set should be matched for each
5073  * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
5074  * array.
5075  *
5076  * Returns a u32 bitmap of flags.
5077  **/
5078 static u32 i40e_get_priv_flags(struct net_device *dev)
5079 {
5080         struct i40e_netdev_priv *np = netdev_priv(dev);
5081         struct i40e_vsi *vsi = np->vsi;
5082         struct i40e_pf *pf = vsi->back;
5083         u32 i, j, ret_flags = 0;
5084
5085         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5086                 const struct i40e_priv_flags *priv_flags;
5087
5088                 priv_flags = &i40e_gstrings_priv_flags[i];
5089
5090                 if (priv_flags->flag & pf->flags)
5091                         ret_flags |= BIT(i);
5092         }
5093
5094         if (pf->hw.pf_id != 0)
5095                 return ret_flags;
5096
5097         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5098                 const struct i40e_priv_flags *priv_flags;
5099
5100                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
5101
5102                 if (priv_flags->flag & pf->flags)
5103                         ret_flags |= BIT(i + j);
5104         }
5105
5106         return ret_flags;
5107 }
5108
5109 /**
5110  * i40e_set_priv_flags - set private flags
5111  * @dev: network interface device structure
5112  * @flags: bit flags to be set
5113  **/
5114 static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
5115 {
5116         struct i40e_netdev_priv *np = netdev_priv(dev);
5117         u64 orig_flags, new_flags, changed_flags;
5118         enum i40e_admin_queue_err adq_err;
5119         struct i40e_vsi *vsi = np->vsi;
5120         struct i40e_pf *pf = vsi->back;
5121         u32 reset_needed = 0;
5122         i40e_status status;
5123         u32 i, j;
5124
5125         orig_flags = READ_ONCE(pf->flags);
5126         new_flags = orig_flags;
5127
5128         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5129                 const struct i40e_priv_flags *priv_flags;
5130
5131                 priv_flags = &i40e_gstrings_priv_flags[i];
5132
5133                 if (flags & BIT(i))
5134                         new_flags |= priv_flags->flag;
5135                 else
5136                         new_flags &= ~(priv_flags->flag);
5137
5138                 /* If this is a read-only flag, it can't be changed */
5139                 if (priv_flags->read_only &&
5140                     ((orig_flags ^ new_flags) & ~BIT(i)))
5141                         return -EOPNOTSUPP;
5142         }
5143
5144         if (pf->hw.pf_id != 0)
5145                 goto flags_complete;
5146
5147         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5148                 const struct i40e_priv_flags *priv_flags;
5149
5150                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
5151
5152                 if (flags & BIT(i + j))
5153                         new_flags |= priv_flags->flag;
5154                 else
5155                         new_flags &= ~(priv_flags->flag);
5156
5157                 /* If this is a read-only flag, it can't be changed */
5158                 if (priv_flags->read_only &&
5159                     ((orig_flags ^ new_flags) & ~BIT(i)))
5160                         return -EOPNOTSUPP;
5161         }
5162
5163 flags_complete:
5164         changed_flags = orig_flags ^ new_flags;
5165
5166         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP)
5167                 reset_needed = I40E_PF_RESET_AND_REBUILD_FLAG;
5168         if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
5169             I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED))
5170                 reset_needed = BIT(__I40E_PF_RESET_REQUESTED);
5171
5172         /* Before we finalize any flag changes, we need to perform some
5173          * checks to ensure that the changes are supported and safe.
5174          */
5175
5176         /* ATR eviction is not supported on all devices */
5177         if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
5178             !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
5179                 return -EOPNOTSUPP;
5180
5181         /* If the driver detected FW LLDP was disabled on init, this flag could
5182          * be set, however we do not support _changing_ the flag:
5183          * - on XL710 if NPAR is enabled or FW API version < 1.7
5184          * - on X722 with FW API version < 1.6
5185          * There are situations where older FW versions/NPAR enabled PFs could
5186          * disable LLDP, however we _must_ not allow the user to enable/disable
5187          * LLDP with this flag on unsupported FW versions.
5188          */
5189         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5190                 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
5191                         dev_warn(&pf->pdev->dev,
5192                                  "Device does not support changing FW LLDP\n");
5193                         return -EOPNOTSUPP;
5194                 }
5195         }
5196
5197         if (changed_flags & I40E_FLAG_RS_FEC &&
5198             pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5199             pf->hw.device_id != I40E_DEV_ID_25G_B) {
5200                 dev_warn(&pf->pdev->dev,
5201                          "Device does not support changing FEC configuration\n");
5202                 return -EOPNOTSUPP;
5203         }
5204
5205         if (changed_flags & I40E_FLAG_BASE_R_FEC &&
5206             pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5207             pf->hw.device_id != I40E_DEV_ID_25G_B &&
5208             pf->hw.device_id != I40E_DEV_ID_KX_X722) {
5209                 dev_warn(&pf->pdev->dev,
5210                          "Device does not support changing FEC configuration\n");
5211                 return -EOPNOTSUPP;
5212         }
5213
5214         /* Process any additional changes needed as a result of flag changes.
5215          * The changed_flags value reflects the list of bits that were
5216          * changed in the code above.
5217          */
5218
5219         /* Flush current ATR settings if ATR was disabled */
5220         if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5221             !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5222                 set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
5223                 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
5224         }
5225
5226         if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
5227                 u16 sw_flags = 0, valid_flags = 0;
5228                 int ret;
5229
5230                 if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
5231                         sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5232                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5233                 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
5234                                                 0, NULL);
5235                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
5236                         dev_info(&pf->pdev->dev,
5237                                  "couldn't set switch config bits, err %s aq_err %s\n",
5238                                  i40e_stat_str(&pf->hw, ret),
5239                                  i40e_aq_str(&pf->hw,
5240                                              pf->hw.aq.asq_last_status));
5241                         /* not a fatal problem, just keep going */
5242                 }
5243         }
5244
5245         if ((changed_flags & I40E_FLAG_RS_FEC) ||
5246             (changed_flags & I40E_FLAG_BASE_R_FEC)) {
5247                 u8 fec_cfg = 0;
5248
5249                 if (new_flags & I40E_FLAG_RS_FEC &&
5250                     new_flags & I40E_FLAG_BASE_R_FEC) {
5251                         fec_cfg = I40E_AQ_SET_FEC_AUTO;
5252                 } else if (new_flags & I40E_FLAG_RS_FEC) {
5253                         fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
5254                                    I40E_AQ_SET_FEC_ABILITY_RS);
5255                 } else if (new_flags & I40E_FLAG_BASE_R_FEC) {
5256                         fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
5257                                    I40E_AQ_SET_FEC_ABILITY_KR);
5258                 }
5259                 if (i40e_set_fec_cfg(dev, fec_cfg))
5260                         dev_warn(&pf->pdev->dev, "Cannot change FEC config\n");
5261         }
5262
5263         if ((changed_flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5264             (orig_flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)) {
5265                 dev_err(&pf->pdev->dev,
5266                         "Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n");
5267                 return -EOPNOTSUPP;
5268         }
5269
5270         if ((changed_flags & new_flags &
5271              I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5272             (new_flags & I40E_FLAG_MFP_ENABLED))
5273                 dev_warn(&pf->pdev->dev,
5274                          "Turning on link-down-on-close flag may affect other partitions\n");
5275
5276         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5277                 if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5278 #ifdef CONFIG_I40E_DCB
5279                         i40e_dcb_sw_default_config(pf);
5280 #endif /* CONFIG_I40E_DCB */
5281                         i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL);
5282                         i40e_aq_stop_lldp(&pf->hw, true, false, NULL);
5283                 } else {
5284                         status = i40e_aq_start_lldp(&pf->hw, false, NULL);
5285                         if (status) {
5286                                 adq_err = pf->hw.aq.asq_last_status;
5287                                 switch (adq_err) {
5288                                 case I40E_AQ_RC_EEXIST:
5289                                         dev_warn(&pf->pdev->dev,
5290                                                  "FW LLDP agent is already running\n");
5291                                         reset_needed = 0;
5292                                         break;
5293                                 case I40E_AQ_RC_EPERM:
5294                                         dev_warn(&pf->pdev->dev,
5295                                                  "Device configuration forbids SW from starting the LLDP agent.\n");
5296                                         return -EINVAL;
5297                                 default:
5298                                         dev_warn(&pf->pdev->dev,
5299                                                  "Starting FW LLDP agent failed: error: %s, %s\n",
5300                                                  i40e_stat_str(&pf->hw,
5301                                                                status),
5302                                                  i40e_aq_str(&pf->hw,
5303                                                              adq_err));
5304                                         return -EINVAL;
5305                                 }
5306                         }
5307                 }
5308         }
5309
5310         /* Now that we've checked to ensure that the new flags are valid, load
5311          * them into place. Since we only modify flags either (a) during
5312          * initialization or (b) while holding the RTNL lock, we don't need
5313          * anything fancy here.
5314          */
5315         pf->flags = new_flags;
5316
5317         /* Issue reset to cause things to take effect, as additional bits
5318          * are added we will need to create a mask of bits requiring reset
5319          */
5320         if (reset_needed)
5321                 i40e_do_reset(pf, reset_needed, true);
5322
5323         return 0;
5324 }
5325
5326 /**
5327  * i40e_get_module_info - get (Q)SFP+ module type info
5328  * @netdev: network interface device structure
5329  * @modinfo: module EEPROM size and layout information structure
5330  **/
5331 static int i40e_get_module_info(struct net_device *netdev,
5332                                 struct ethtool_modinfo *modinfo)
5333 {
5334         struct i40e_netdev_priv *np = netdev_priv(netdev);
5335         struct i40e_vsi *vsi = np->vsi;
5336         struct i40e_pf *pf = vsi->back;
5337         struct i40e_hw *hw = &pf->hw;
5338         u32 sff8472_comp = 0;
5339         u32 sff8472_swap = 0;
5340         u32 sff8636_rev = 0;
5341         i40e_status status;
5342         u32 type = 0;
5343
5344         /* Check if firmware supports reading module EEPROM. */
5345         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
5346                 netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
5347                 return -EINVAL;
5348         }
5349
5350         status = i40e_update_link_info(hw);
5351         if (status)
5352                 return -EIO;
5353
5354         if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
5355                 netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n");
5356                 return -EINVAL;
5357         }
5358
5359         type = hw->phy.link_info.module_type[0];
5360
5361         switch (type) {
5362         case I40E_MODULE_TYPE_SFP:
5363                 status = i40e_aq_get_phy_register(hw,
5364                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5365                                 I40E_I2C_EEPROM_DEV_ADDR, true,
5366                                 I40E_MODULE_SFF_8472_COMP,
5367                                 &sff8472_comp, NULL);
5368                 if (status)
5369                         return -EIO;
5370
5371                 status = i40e_aq_get_phy_register(hw,
5372                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5373                                 I40E_I2C_EEPROM_DEV_ADDR, true,
5374                                 I40E_MODULE_SFF_8472_SWAP,
5375                                 &sff8472_swap, NULL);
5376                 if (status)
5377                         return -EIO;
5378
5379                 /* Check if the module requires address swap to access
5380                  * the other EEPROM memory page.
5381                  */
5382                 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
5383                         netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
5384                         modinfo->type = ETH_MODULE_SFF_8079;
5385                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5386                 } else if (sff8472_comp == 0x00) {
5387                         /* Module is not SFF-8472 compliant */
5388                         modinfo->type = ETH_MODULE_SFF_8079;
5389                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5390                 } else if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) {
5391                         /* Module is SFF-8472 compliant but doesn't implement
5392                          * Digital Diagnostic Monitoring (DDM).
5393                          */
5394                         modinfo->type = ETH_MODULE_SFF_8079;
5395                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5396                 } else {
5397                         modinfo->type = ETH_MODULE_SFF_8472;
5398                         modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
5399                 }
5400                 break;
5401         case I40E_MODULE_TYPE_QSFP_PLUS:
5402                 /* Read from memory page 0. */
5403                 status = i40e_aq_get_phy_register(hw,
5404                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5405                                 0, true,
5406                                 I40E_MODULE_REVISION_ADDR,
5407                                 &sff8636_rev, NULL);
5408                 if (status)
5409                         return -EIO;
5410                 /* Determine revision compliance byte */
5411                 if (sff8636_rev > 0x02) {
5412                         /* Module is SFF-8636 compliant */
5413                         modinfo->type = ETH_MODULE_SFF_8636;
5414                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5415                 } else {
5416                         modinfo->type = ETH_MODULE_SFF_8436;
5417                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5418                 }
5419                 break;
5420         case I40E_MODULE_TYPE_QSFP28:
5421                 modinfo->type = ETH_MODULE_SFF_8636;
5422                 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5423                 break;
5424         default:
5425                 netdev_err(vsi->netdev, "Module type unrecognized\n");
5426                 return -EINVAL;
5427         }
5428         return 0;
5429 }
5430
5431 /**
5432  * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
5433  * @netdev: network interface device structure
5434  * @ee: EEPROM dump request structure
5435  * @data: buffer to be filled with EEPROM contents
5436  **/
5437 static int i40e_get_module_eeprom(struct net_device *netdev,
5438                                   struct ethtool_eeprom *ee,
5439                                   u8 *data)
5440 {
5441         struct i40e_netdev_priv *np = netdev_priv(netdev);
5442         struct i40e_vsi *vsi = np->vsi;
5443         struct i40e_pf *pf = vsi->back;
5444         struct i40e_hw *hw = &pf->hw;
5445         bool is_sfp = false;
5446         i40e_status status;
5447         u32 value = 0;
5448         int i;
5449
5450         if (!ee || !ee->len || !data)
5451                 return -EINVAL;
5452
5453         if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
5454                 is_sfp = true;
5455
5456         for (i = 0; i < ee->len; i++) {
5457                 u32 offset = i + ee->offset;
5458                 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
5459
5460                 /* Check if we need to access the other memory page */
5461                 if (is_sfp) {
5462                         if (offset >= ETH_MODULE_SFF_8079_LEN) {
5463                                 offset -= ETH_MODULE_SFF_8079_LEN;
5464                                 addr = I40E_I2C_EEPROM_DEV_ADDR2;
5465                         }
5466                 } else {
5467                         while (offset >= ETH_MODULE_SFF_8436_LEN) {
5468                                 /* Compute memory page number and offset. */
5469                                 offset -= ETH_MODULE_SFF_8436_LEN / 2;
5470                                 addr++;
5471                         }
5472                 }
5473
5474                 status = i40e_aq_get_phy_register(hw,
5475                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5476                                 addr, true, offset, &value, NULL);
5477                 if (status)
5478                         return -EIO;
5479                 data[i] = value;
5480         }
5481         return 0;
5482 }
5483
5484 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
5485 {
5486         struct i40e_netdev_priv *np = netdev_priv(netdev);
5487         struct i40e_aq_get_phy_abilities_resp phy_cfg;
5488         enum i40e_status_code status = 0;
5489         struct i40e_vsi *vsi = np->vsi;
5490         struct i40e_pf *pf = vsi->back;
5491         struct i40e_hw *hw = &pf->hw;
5492
5493         /* Get initial PHY capabilities */
5494         status = i40e_aq_get_phy_capabilities(hw, false, true, &phy_cfg, NULL);
5495         if (status)
5496                 return -EAGAIN;
5497
5498         /* Check whether NIC configuration is compatible with Energy Efficient
5499          * Ethernet (EEE) mode.
5500          */
5501         if (phy_cfg.eee_capability == 0)
5502                 return -EOPNOTSUPP;
5503
5504         edata->supported = SUPPORTED_Autoneg;
5505         edata->lp_advertised = edata->supported;
5506
5507         /* Get current configuration */
5508         status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL);
5509         if (status)
5510                 return -EAGAIN;
5511
5512         edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
5513         edata->eee_enabled = !!edata->advertised;
5514         edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
5515
5516         edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
5517
5518         return 0;
5519 }
5520
5521 static int i40e_is_eee_param_supported(struct net_device *netdev,
5522                                        struct ethtool_eee *edata)
5523 {
5524         struct i40e_netdev_priv *np = netdev_priv(netdev);
5525         struct i40e_vsi *vsi = np->vsi;
5526         struct i40e_pf *pf = vsi->back;
5527         struct i40e_ethtool_not_used {
5528                 u32 value;
5529                 const char *name;
5530         } param[] = {
5531                 {edata->advertised & ~SUPPORTED_Autoneg, "advertise"},
5532                 {edata->tx_lpi_timer, "tx-timer"},
5533                 {edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
5534         };
5535         int i;
5536
5537         for (i = 0; i < ARRAY_SIZE(param); i++) {
5538                 if (param[i].value) {
5539                         netdev_info(netdev,
5540                                     "EEE setting %s not supported\n",
5541                                     param[i].name);
5542                         return -EOPNOTSUPP;
5543                 }
5544         }
5545
5546         return 0;
5547 }
5548
5549 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
5550 {
5551         struct i40e_netdev_priv *np = netdev_priv(netdev);
5552         struct i40e_aq_get_phy_abilities_resp abilities;
5553         enum i40e_status_code status = I40E_SUCCESS;
5554         struct i40e_aq_set_phy_config config;
5555         struct i40e_vsi *vsi = np->vsi;
5556         struct i40e_pf *pf = vsi->back;
5557         struct i40e_hw *hw = &pf->hw;
5558         __le16 eee_capability;
5559
5560         /* Deny parameters we don't support */
5561         if (i40e_is_eee_param_supported(netdev, edata))
5562                 return -EOPNOTSUPP;
5563
5564         /* Get initial PHY capabilities */
5565         status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
5566                                               NULL);
5567         if (status)
5568                 return -EAGAIN;
5569
5570         /* Check whether NIC configuration is compatible with Energy Efficient
5571          * Ethernet (EEE) mode.
5572          */
5573         if (abilities.eee_capability == 0)
5574                 return -EOPNOTSUPP;
5575
5576         /* Cache initial EEE capability */
5577         eee_capability = abilities.eee_capability;
5578
5579         /* Get current PHY configuration */
5580         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
5581                                               NULL);
5582         if (status)
5583                 return -EAGAIN;
5584
5585         /* Cache current PHY configuration */
5586         config.phy_type = abilities.phy_type;
5587         config.phy_type_ext = abilities.phy_type_ext;
5588         config.link_speed = abilities.link_speed;
5589         config.abilities = abilities.abilities |
5590                            I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
5591         config.eeer = abilities.eeer_val;
5592         config.low_power_ctrl = abilities.d3_lpan;
5593         config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
5594                             I40E_AQ_PHY_FEC_CONFIG_MASK;
5595
5596         /* Set desired EEE state */
5597         if (edata->eee_enabled) {
5598                 config.eee_capability = eee_capability;
5599                 config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5600         } else {
5601                 config.eee_capability = 0;
5602                 config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5603         }
5604
5605         /* Apply modified PHY configuration */
5606         status = i40e_aq_set_phy_config(hw, &config, NULL);
5607         if (status)
5608                 return -EAGAIN;
5609
5610         return 0;
5611 }
5612
5613 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {
5614         .get_drvinfo            = i40e_get_drvinfo,
5615         .set_eeprom             = i40e_set_eeprom,
5616         .get_eeprom_len         = i40e_get_eeprom_len,
5617         .get_eeprom             = i40e_get_eeprom,
5618 };
5619
5620 static const struct ethtool_ops i40e_ethtool_ops = {
5621         .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
5622                                      ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
5623                                      ETHTOOL_COALESCE_USE_ADAPTIVE |
5624                                      ETHTOOL_COALESCE_RX_USECS_HIGH |
5625                                      ETHTOOL_COALESCE_TX_USECS_HIGH,
5626         .get_drvinfo            = i40e_get_drvinfo,
5627         .get_regs_len           = i40e_get_regs_len,
5628         .get_regs               = i40e_get_regs,
5629         .nway_reset             = i40e_nway_reset,
5630         .get_link               = ethtool_op_get_link,
5631         .get_wol                = i40e_get_wol,
5632         .set_wol                = i40e_set_wol,
5633         .set_eeprom             = i40e_set_eeprom,
5634         .get_eeprom_len         = i40e_get_eeprom_len,
5635         .get_eeprom             = i40e_get_eeprom,
5636         .get_ringparam          = i40e_get_ringparam,
5637         .set_ringparam          = i40e_set_ringparam,
5638         .get_pauseparam         = i40e_get_pauseparam,
5639         .set_pauseparam         = i40e_set_pauseparam,
5640         .get_msglevel           = i40e_get_msglevel,
5641         .set_msglevel           = i40e_set_msglevel,
5642         .get_rxnfc              = i40e_get_rxnfc,
5643         .set_rxnfc              = i40e_set_rxnfc,
5644         .self_test              = i40e_diag_test,
5645         .get_strings            = i40e_get_strings,
5646         .get_eee                = i40e_get_eee,
5647         .set_eee                = i40e_set_eee,
5648         .set_phys_id            = i40e_set_phys_id,
5649         .get_sset_count         = i40e_get_sset_count,
5650         .get_ethtool_stats      = i40e_get_ethtool_stats,
5651         .get_coalesce           = i40e_get_coalesce,
5652         .set_coalesce           = i40e_set_coalesce,
5653         .get_rxfh_key_size      = i40e_get_rxfh_key_size,
5654         .get_rxfh_indir_size    = i40e_get_rxfh_indir_size,
5655         .get_rxfh               = i40e_get_rxfh,
5656         .set_rxfh               = i40e_set_rxfh,
5657         .get_channels           = i40e_get_channels,
5658         .set_channels           = i40e_set_channels,
5659         .get_module_info        = i40e_get_module_info,
5660         .get_module_eeprom      = i40e_get_module_eeprom,
5661         .get_ts_info            = i40e_get_ts_info,
5662         .get_priv_flags         = i40e_get_priv_flags,
5663         .set_priv_flags         = i40e_set_priv_flags,
5664         .get_per_queue_coalesce = i40e_get_per_queue_coalesce,
5665         .set_per_queue_coalesce = i40e_set_per_queue_coalesce,
5666         .get_link_ksettings     = i40e_get_link_ksettings,
5667         .set_link_ksettings     = i40e_set_link_ksettings,
5668         .get_fecparam = i40e_get_fec_param,
5669         .set_fecparam = i40e_set_fec_param,
5670         .flash_device = i40e_ddp_flash,
5671 };
5672
5673 void i40e_set_ethtool_ops(struct net_device *netdev)
5674 {
5675         struct i40e_netdev_priv *np = netdev_priv(netdev);
5676         struct i40e_pf          *pf = np->vsi->back;
5677
5678         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
5679                 netdev->ethtool_ops = &i40e_ethtool_ops;
5680         else
5681                 netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops;
5682 }