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 = FIELD_SIZEOF(_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  * 40e_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_PFC_STAT(_name, _stat) \
 236         I40E_STAT(struct i40e_pfc_stats, _name, _stat)
 237 #define I40E_QUEUE_STAT(_name, _stat) \
 238         I40E_STAT(struct i40e_ring, _name, _stat)
 239
 240 static const struct i40e_stats i40e_gstrings_net_stats[] = {
 241         I40E_NETDEV_STAT(rx_packets),
 242         I40E_NETDEV_STAT(tx_packets),
 243         I40E_NETDEV_STAT(rx_bytes),
 244         I40E_NETDEV_STAT(tx_bytes),
 245         I40E_NETDEV_STAT(rx_errors),
 246         I40E_NETDEV_STAT(tx_errors),
 247         I40E_NETDEV_STAT(rx_dropped),
 248         I40E_NETDEV_STAT(tx_dropped),
 249         I40E_NETDEV_STAT(collisions),
 250         I40E_NETDEV_STAT(rx_length_errors),
 251         I40E_NETDEV_STAT(rx_crc_errors),
 252 };
 253
 254 static const struct i40e_stats i40e_gstrings_veb_stats[] = {
 255         I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
 256         I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
 257         I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
 258         I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
 259         I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
 260         I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
 261         I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
 262         I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
 263         I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
 264         I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
 265         I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
 266         I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
 267 };
 268
 269 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
 270         I40E_VEB_STAT("veb.tc_%u_tx_packets", tc_stats.tc_tx_packets),
 271         I40E_VEB_STAT("veb.tc_%u_tx_bytes", tc_stats.tc_tx_bytes),
 272         I40E_VEB_STAT("veb.tc_%u_rx_packets", tc_stats.tc_rx_packets),
 273         I40E_VEB_STAT("veb.tc_%u_rx_bytes", tc_stats.tc_rx_bytes),
 274 };
 275
 276 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
 277         I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
 278         I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
 279         I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
 280         I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
 281         I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
 282         I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
 283         I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
 284         I40E_VSI_STAT("tx_linearize", tx_linearize),
 285         I40E_VSI_STAT("tx_force_wb", tx_force_wb),
 286         I40E_VSI_STAT("tx_busy", tx_busy),
 287         I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
 288         I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
 289 };
 290
 291 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
 292  * but they are separate.  This device supports Virtualization, and
 293  * as such might have several netdevs supporting VMDq and FCoE going
 294  * through a single port.  The NETDEV_STATs are for individual netdevs
 295  * seen at the top of the stack, and the PF_STATs are for the physical
 296  * function at the bottom of the stack hosting those netdevs.
 297  *
 298  * The PF_STATs are appended to the netdev stats only when ethtool -S
 299  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
 300  */
 301 static const struct i40e_stats i40e_gstrings_stats[] = {
 302         I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
 303         I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
 304         I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
 305         I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
 306         I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
 307         I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
 308         I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
 309         I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
 310         I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
 311         I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards),
 312         I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
 313         I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
 314         I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
 315         I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
 316         I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
 317         I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
 318         I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
 319         I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
 320         I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
 321         I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
 322         I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
 323         I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
 324         I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
 325         I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
 326         I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
 327         I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
 328         I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
 329         I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
 330         I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
 331         I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
 332         I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
 333         I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
 334         I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
 335         I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
 336         I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
 337         I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
 338         I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
 339         I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
 340         I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
 341         I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
 342         I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
 343         I40E_PF_STAT("port.arq_overflows", arq_overflows),
 344         I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
 345         I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 346         I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
 347         I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
 348         I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
 349         I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
 350         I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
 351         I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
 352         I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
 353
 354         /* LPI stats */
 355         I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
 356         I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
 357         I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
 358         I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
 359 };
 360
 361 struct i40e_pfc_stats {
 362         u64 priority_xon_rx;
 363         u64 priority_xoff_rx;
 364         u64 priority_xon_tx;
 365         u64 priority_xoff_tx;
 366         u64 priority_xon_2_xoff;
 367 };
 368
 369 static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
 370         I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
 371         I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
 372         I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
 373         I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
 374         I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
 375 };
 376
 377 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 378
 379 #define I40E_MISC_STATS_LEN     ARRAY_SIZE(i40e_gstrings_misc_stats)
 380
 381 #define I40E_VSI_STATS_LEN      (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
 382
 383 #define I40E_PFC_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
 384                                  I40E_MAX_USER_PRIORITY)
 385
 386 #define I40E_VEB_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_veb_stats) + \
 387                                  (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
 388                                   I40E_MAX_TRAFFIC_CLASS))
 389
 390 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 391
 392 #define I40E_PF_STATS_LEN       (I40E_GLOBAL_STATS_LEN + \
 393                                  I40E_PFC_STATS_LEN + \
 394                                  I40E_VEB_STATS_LEN + \
 395                                  I40E_VSI_STATS_LEN)
 396
 397 /* Length of stats for a single queue */
 398 #define I40E_QUEUE_STATS_LEN    ARRAY_SIZE(i40e_gstrings_queue_stats)
 399
 400 enum i40e_ethtool_test_id {
 401         I40E_ETH_TEST_REG = 0,
 402         I40E_ETH_TEST_EEPROM,
 403         I40E_ETH_TEST_INTR,
 404         I40E_ETH_TEST_LINK,
 405 };
 406
 407 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 408         "Register test  (offline)",
 409         "Eeprom test    (offline)",
 410         "Interrupt test (offline)",
 411         "Link test   (on/offline)"
 412 };
 413
 414 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 415
 416 struct i40e_priv_flags {
 417         char flag_string[ETH_GSTRING_LEN];
 418         u64 flag;
 419         bool read_only;
 420 };
 421
 422 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
 423         .flag_string = _name, \
 424         .flag = _flag, \
 425         .read_only = _read_only, \
 426 }
 427
 428 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
 429         /* NOTE: MFP setting cannot be changed */
 430         I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
 431         I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
 432         I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
 433         I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
 434         I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
 435         I40E_PRIV_FLAG("link-down-on-close",
 436                        I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
 437         I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
 438         I40E_PRIV_FLAG("disable-source-pruning",
 439                        I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
 440         I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
 441 };
 442
 443 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
 444
 445 /* Private flags with a global effect, restricted to PF 0 */
 446 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
 447         I40E_PRIV_FLAG("vf-true-promisc-support",
 448                        I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
 449 };
 450
 451 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
 452
 453 /**
 454  * i40e_partition_setting_complaint - generic complaint for MFP restriction
 455  * @pf: the PF struct
 456  **/
 457 static void i40e_partition_setting_complaint(struct i40e_pf *pf)
 458 {
 459         dev_info(&pf->pdev->dev,
 460                  "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");
 461 }
 462
 463 /**
 464  * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
 465  * @pf: PF struct with phy_types
 466  * @ks: ethtool link ksettings struct to fill out
 467  *
 468  **/
 469 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
 470                                      struct ethtool_link_ksettings *ks)
 471 {
 472         struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
 473         u64 phy_types = pf->hw.phy.phy_types;
 474
 475         ethtool_link_ksettings_zero_link_mode(ks, supported);
 476         ethtool_link_ksettings_zero_link_mode(ks, advertising);
 477
 478         if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
 479                 ethtool_link_ksettings_add_link_mode(ks, supported,
 480                                                      1000baseT_Full);
 481                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 482                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 483                                                              1000baseT_Full);
 484                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 485                         ethtool_link_ksettings_add_link_mode(ks, supported,
 486                                                              100baseT_Full);
 487                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 488                                                              100baseT_Full);
 489                 }
 490         }
 491         if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
 492             phy_types & I40E_CAP_PHY_TYPE_XFI ||
 493             phy_types & I40E_CAP_PHY_TYPE_SFI ||
 494             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
 495             phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
 496                 ethtool_link_ksettings_add_link_mode(ks, supported,
 497                                                      10000baseT_Full);
 498                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 499                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 500                                                              10000baseT_Full);
 501         }
 502         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
 503                 ethtool_link_ksettings_add_link_mode(ks, supported,
 504                                                      10000baseT_Full);
 505                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 506                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 507                                                              10000baseT_Full);
 508         }
 509         if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
 510             phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
 511             phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
 512                 ethtool_link_ksettings_add_link_mode(ks, supported,
 513                                                      40000baseCR4_Full);
 514         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 515             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
 516                 ethtool_link_ksettings_add_link_mode(ks, supported,
 517                                                      40000baseCR4_Full);
 518                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
 519                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 520                                                              40000baseCR4_Full);
 521         }
 522         if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 523                 ethtool_link_ksettings_add_link_mode(ks, supported,
 524                                                      100baseT_Full);
 525                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 526                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 527                                                              100baseT_Full);
 528         }
 529         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
 530                 ethtool_link_ksettings_add_link_mode(ks, supported,
 531                                                      1000baseT_Full);
 532                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 533                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 534                                                              1000baseT_Full);
 535         }
 536         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4)
 537                 ethtool_link_ksettings_add_link_mode(ks, supported,
 538                                                      40000baseSR4_Full);
 539         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4)
 540                 ethtool_link_ksettings_add_link_mode(ks, supported,
 541                                                      40000baseLR4_Full);
 542         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
 543                 ethtool_link_ksettings_add_link_mode(ks, supported,
 544                                                      40000baseLR4_Full);
 545                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 546                                                      40000baseLR4_Full);
 547         }
 548         if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
 549                 ethtool_link_ksettings_add_link_mode(ks, supported,
 550                                                      20000baseKR2_Full);
 551                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
 552                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 553                                                              20000baseKR2_Full);
 554         }
 555         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
 556                 ethtool_link_ksettings_add_link_mode(ks, supported,
 557                                                      10000baseKX4_Full);
 558                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 559                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 560                                                              10000baseKX4_Full);
 561         }
 562         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
 563             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 564                 ethtool_link_ksettings_add_link_mode(ks, supported,
 565                                                      10000baseKR_Full);
 566                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 567                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 568                                                              10000baseKR_Full);
 569         }
 570         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
 571             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 572                 ethtool_link_ksettings_add_link_mode(ks, supported,
 573                                                      1000baseKX_Full);
 574                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 575                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 576                                                              1000baseKX_Full);
 577         }
 578         /* need to add 25G PHY types */
 579         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
 580                 ethtool_link_ksettings_add_link_mode(ks, supported,
 581                                                      25000baseKR_Full);
 582                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 583                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 584                                                              25000baseKR_Full);
 585         }
 586         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
 587                 ethtool_link_ksettings_add_link_mode(ks, supported,
 588                                                      25000baseCR_Full);
 589                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 590                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 591                                                              25000baseCR_Full);
 592         }
 593         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 594             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
 595                 ethtool_link_ksettings_add_link_mode(ks, supported,
 596                                                      25000baseSR_Full);
 597                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 598                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 599                                                              25000baseSR_Full);
 600         }
 601         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
 602             phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
 603                 ethtool_link_ksettings_add_link_mode(ks, supported,
 604                                                      25000baseCR_Full);
 605                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 606                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 607                                                              25000baseCR_Full);
 608         }
 609         /* need to add new 10G PHY types */
 610         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 611             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
 612                 ethtool_link_ksettings_add_link_mode(ks, supported,
 613                                                      10000baseCR_Full);
 614                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 615                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 616                                                              10000baseCR_Full);
 617         }
 618         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
 619                 ethtool_link_ksettings_add_link_mode(ks, supported,
 620                                                      10000baseSR_Full);
 621                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 622                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 623                                                              10000baseSR_Full);
 624         }
 625         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
 626                 ethtool_link_ksettings_add_link_mode(ks, supported,
 627                                                      10000baseLR_Full);
 628                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 629                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 630                                                              10000baseLR_Full);
 631         }
 632         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 633             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 634             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
 635                 ethtool_link_ksettings_add_link_mode(ks, supported,
 636                                                      1000baseX_Full);
 637                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 638                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 639                                                              1000baseX_Full);
 640         }
 641         /* Autoneg PHY types */
 642         if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
 643             phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
 644             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 645             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
 646             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 647             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
 648             phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 649             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 650             phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
 651             phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
 652             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
 653             phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
 654             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
 655             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
 656             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
 657             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 658             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
 659             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
 660             phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 661             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 662             phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
 663             phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 664                 ethtool_link_ksettings_add_link_mode(ks, supported,
 665                                                      Autoneg);
 666                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 667                                                      Autoneg);
 668         }
 669 }
 670
 671 /**
 672  * i40e_get_settings_link_up - Get the Link settings for when link is up
 673  * @hw: hw structure
 674  * @ks: ethtool ksettings to fill in
 675  * @netdev: network interface device structure
 676  * @pf: pointer to physical function struct
 677  **/
 678 static void i40e_get_settings_link_up(struct i40e_hw *hw,
 679                                       struct ethtool_link_ksettings *ks,
 680                                       struct net_device *netdev,
 681                                       struct i40e_pf *pf)
 682 {
 683         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 684         struct ethtool_link_ksettings cap_ksettings;
 685         u32 link_speed = hw_link_info->link_speed;
 686
 687         /* Initialize supported and advertised settings based on phy settings */
 688         switch (hw_link_info->phy_type) {
 689         case I40E_PHY_TYPE_40GBASE_CR4:
 690         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 691                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 692                 ethtool_link_ksettings_add_link_mode(ks, supported,
 693                                                      40000baseCR4_Full);
 694                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 695                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 696                                                      40000baseCR4_Full);
 697                 break;
 698         case I40E_PHY_TYPE_XLAUI:
 699         case I40E_PHY_TYPE_XLPPI:
 700         case I40E_PHY_TYPE_40GBASE_AOC:
 701                 ethtool_link_ksettings_add_link_mode(ks, supported,
 702                                                      40000baseCR4_Full);
 703                 break;
 704         case I40E_PHY_TYPE_40GBASE_SR4:
 705                 ethtool_link_ksettings_add_link_mode(ks, supported,
 706                                                      40000baseSR4_Full);
 707                 break;
 708         case I40E_PHY_TYPE_40GBASE_LR4:
 709                 ethtool_link_ksettings_add_link_mode(ks, supported,
 710                                                      40000baseLR4_Full);
 711                 break;
 712         case I40E_PHY_TYPE_25GBASE_SR:
 713         case I40E_PHY_TYPE_25GBASE_LR:
 714         case I40E_PHY_TYPE_10GBASE_SR:
 715         case I40E_PHY_TYPE_10GBASE_LR:
 716         case I40E_PHY_TYPE_1000BASE_SX:
 717         case I40E_PHY_TYPE_1000BASE_LX:
 718                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 719                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 720                 ethtool_link_ksettings_add_link_mode(ks, supported,
 721                                                      25000baseSR_Full);
 722                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 723                                                      25000baseSR_Full);
 724                 ethtool_link_ksettings_add_link_mode(ks, supported,
 725                                                      10000baseSR_Full);
 726                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 727                                                      10000baseSR_Full);
 728                 ethtool_link_ksettings_add_link_mode(ks, supported,
 729                                                      10000baseLR_Full);
 730                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 731                                                      10000baseLR_Full);
 732                 ethtool_link_ksettings_add_link_mode(ks, supported,
 733                                                      1000baseX_Full);
 734                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 735                                                      1000baseX_Full);
 736                 ethtool_link_ksettings_add_link_mode(ks, supported,
 737                                                      10000baseT_Full);
 738                 if (hw_link_info->module_type[2] &
 739                     I40E_MODULE_TYPE_1000BASE_SX ||
 740                     hw_link_info->module_type[2] &
 741                     I40E_MODULE_TYPE_1000BASE_LX) {
 742                         ethtool_link_ksettings_add_link_mode(ks, supported,
 743                                                              1000baseT_Full);
 744                         if (hw_link_info->requested_speeds &
 745                             I40E_LINK_SPEED_1GB)
 746                                 ethtool_link_ksettings_add_link_mode(
 747                                      ks, advertising, 1000baseT_Full);
 748                 }
 749                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 750                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 751                                                              10000baseT_Full);
 752                 break;
 753         case I40E_PHY_TYPE_10GBASE_T:
 754         case I40E_PHY_TYPE_1000BASE_T:
 755         case I40E_PHY_TYPE_100BASE_TX:
 756                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 757                 ethtool_link_ksettings_add_link_mode(ks, supported,
 758                                                      10000baseT_Full);
 759                 ethtool_link_ksettings_add_link_mode(ks, supported,
 760                                                      1000baseT_Full);
 761                 ethtool_link_ksettings_add_link_mode(ks, supported,
 762                                                      100baseT_Full);
 763                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 764                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 765                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 766                                                              10000baseT_Full);
 767                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 768                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 769                                                              1000baseT_Full);
 770                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 771                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 772                                                              100baseT_Full);
 773                 break;
 774         case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
 775                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 776                 ethtool_link_ksettings_add_link_mode(ks, supported,
 777                                                      1000baseT_Full);
 778                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 779                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 780                                                      1000baseT_Full);
 781                 break;
 782         case I40E_PHY_TYPE_10GBASE_CR1_CU:
 783         case I40E_PHY_TYPE_10GBASE_CR1:
 784                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 785                 ethtool_link_ksettings_add_link_mode(ks, supported,
 786                                                      10000baseT_Full);
 787                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 788                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 789                                                      10000baseT_Full);
 790                 break;
 791         case I40E_PHY_TYPE_XAUI:
 792         case I40E_PHY_TYPE_XFI:
 793         case I40E_PHY_TYPE_SFI:
 794         case I40E_PHY_TYPE_10GBASE_SFPP_CU:
 795         case I40E_PHY_TYPE_10GBASE_AOC:
 796                 ethtool_link_ksettings_add_link_mode(ks, supported,
 797                                                      10000baseT_Full);
 798                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 799                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 800                                                              10000baseT_Full);
 801                 break;
 802         case I40E_PHY_TYPE_SGMII:
 803                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 804                 ethtool_link_ksettings_add_link_mode(ks, supported,
 805                                                      1000baseT_Full);
 806                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 807                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 808                                                              1000baseT_Full);
 809                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 810                         ethtool_link_ksettings_add_link_mode(ks, supported,
 811                                                              100baseT_Full);
 812                         if (hw_link_info->requested_speeds &
 813                             I40E_LINK_SPEED_100MB)
 814                                 ethtool_link_ksettings_add_link_mode(
 815                                       ks, advertising, 100baseT_Full);
 816                 }
 817                 break;
 818         case I40E_PHY_TYPE_40GBASE_KR4:
 819         case I40E_PHY_TYPE_25GBASE_KR:
 820         case I40E_PHY_TYPE_20GBASE_KR2:
 821         case I40E_PHY_TYPE_10GBASE_KR:
 822         case I40E_PHY_TYPE_10GBASE_KX4:
 823         case I40E_PHY_TYPE_1000BASE_KX:
 824                 ethtool_link_ksettings_add_link_mode(ks, supported,
 825                                                      40000baseKR4_Full);
 826                 ethtool_link_ksettings_add_link_mode(ks, supported,
 827                                                      25000baseKR_Full);
 828                 ethtool_link_ksettings_add_link_mode(ks, supported,
 829                                                      20000baseKR2_Full);
 830                 ethtool_link_ksettings_add_link_mode(ks, supported,
 831                                                      10000baseKR_Full);
 832                 ethtool_link_ksettings_add_link_mode(ks, supported,
 833                                                      10000baseKX4_Full);
 834                 ethtool_link_ksettings_add_link_mode(ks, supported,
 835                                                      1000baseKX_Full);
 836                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 837                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 838                                                      40000baseKR4_Full);
 839                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 840                                                      25000baseKR_Full);
 841                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 842                                                      20000baseKR2_Full);
 843                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 844                                                      10000baseKR_Full);
 845                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 846                                                      10000baseKX4_Full);
 847                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 848                                                      1000baseKX_Full);
 849                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 850                 break;
 851         case I40E_PHY_TYPE_25GBASE_CR:
 852                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 853                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 854                 ethtool_link_ksettings_add_link_mode(ks, supported,
 855                                                      25000baseCR_Full);
 856                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 857                                                      25000baseCR_Full);
 858                 break;
 859         case I40E_PHY_TYPE_25GBASE_AOC:
 860         case I40E_PHY_TYPE_25GBASE_ACC:
 861                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 862                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 863                 ethtool_link_ksettings_add_link_mode(ks, supported,
 864                                                      25000baseCR_Full);
 865
 866                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 867                                                      25000baseCR_Full);
 868                 ethtool_link_ksettings_add_link_mode(ks, supported,
 869                                                      10000baseCR_Full);
 870                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 871                                                      10000baseCR_Full);
 872                 break;
 873         default:
 874                 /* if we got here and link is up something bad is afoot */
 875                 netdev_info(netdev,
 876                             "WARNING: Link is up but PHY type 0x%x is not recognized.\n",
 877                             hw_link_info->phy_type);
 878         }
 879
 880         /* Now that we've worked out everything that could be supported by the
 881          * current PHY type, get what is supported by the NVM and intersect
 882          * them to get what is truly supported
 883          */
 884         memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
 885         i40e_phy_type_to_ethtool(pf, &cap_ksettings);
 886         ethtool_intersect_link_masks(ks, &cap_ksettings);
 887
 888         /* Set speed and duplex */
 889         switch (link_speed) {
 890         case I40E_LINK_SPEED_40GB:
 891                 ks->base.speed = SPEED_40000;
 892                 break;
 893         case I40E_LINK_SPEED_25GB:
 894                 ks->base.speed = SPEED_25000;
 895                 break;
 896         case I40E_LINK_SPEED_20GB:
 897                 ks->base.speed = SPEED_20000;
 898                 break;
 899         case I40E_LINK_SPEED_10GB:
 900                 ks->base.speed = SPEED_10000;
 901                 break;
 902         case I40E_LINK_SPEED_1GB:
 903                 ks->base.speed = SPEED_1000;
 904                 break;
 905         case I40E_LINK_SPEED_100MB:
 906                 ks->base.speed = SPEED_100;
 907                 break;
 908         default:
 909                 ks->base.speed = SPEED_UNKNOWN;
 910                 break;
 911         }
 912         ks->base.duplex = DUPLEX_FULL;
 913 }
 914
 915 /**
 916  * i40e_get_settings_link_down - Get the Link settings for when link is down
 917  * @hw: hw structure
 918  * @ks: ethtool ksettings to fill in
 919  * @pf: pointer to physical function struct
 920  *
 921  * Reports link settings that can be determined when link is down
 922  **/
 923 static void i40e_get_settings_link_down(struct i40e_hw *hw,
 924                                         struct ethtool_link_ksettings *ks,
 925                                         struct i40e_pf *pf)
 926 {
 927         /* link is down and the driver needs to fall back on
 928          * supported phy types to figure out what info to display
 929          */
 930         i40e_phy_type_to_ethtool(pf, ks);
 931
 932         /* With no link speed and duplex are unknown */
 933         ks->base.speed = SPEED_UNKNOWN;
 934         ks->base.duplex = DUPLEX_UNKNOWN;
 935 }
 936
 937 /**
 938  * i40e_get_link_ksettings - Get Link Speed and Duplex settings
 939  * @netdev: network interface device structure
 940  * @ks: ethtool ksettings
 941  *
 942  * Reports speed/duplex settings based on media_type
 943  **/
 944 static int i40e_get_link_ksettings(struct net_device *netdev,
 945                                    struct ethtool_link_ksettings *ks)
 946 {
 947         struct i40e_netdev_priv *np = netdev_priv(netdev);
 948         struct i40e_pf *pf = np->vsi->back;
 949         struct i40e_hw *hw = &pf->hw;
 950         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 951         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
 952
 953         ethtool_link_ksettings_zero_link_mode(ks, supported);
 954         ethtool_link_ksettings_zero_link_mode(ks, advertising);
 955
 956         if (link_up)
 957                 i40e_get_settings_link_up(hw, ks, netdev, pf);
 958         else
 959                 i40e_get_settings_link_down(hw, ks, pf);
 960
 961         /* Now set the settings that don't rely on link being up/down */
 962         /* Set autoneg settings */
 963         ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
 964                             AUTONEG_ENABLE : AUTONEG_DISABLE);
 965
 966         /* Set media type settings */
 967         switch (hw->phy.media_type) {
 968         case I40E_MEDIA_TYPE_BACKPLANE:
 969                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 970                 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
 971                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 972                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 973                                                      Backplane);
 974                 ks->base.port = PORT_NONE;
 975                 break;
 976         case I40E_MEDIA_TYPE_BASET:
 977                 ethtool_link_ksettings_add_link_mode(ks, supported, TP);
 978                 ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
 979                 ks->base.port = PORT_TP;
 980                 break;
 981         case I40E_MEDIA_TYPE_DA:
 982         case I40E_MEDIA_TYPE_CX4:
 983                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
 984                 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
 985                 ks->base.port = PORT_DA;
 986                 break;
 987         case I40E_MEDIA_TYPE_FIBER:
 988                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
 989                 ks->base.port = PORT_FIBRE;
 990                 break;
 991         case I40E_MEDIA_TYPE_UNKNOWN:
 992         default:
 993                 ks->base.port = PORT_OTHER;
 994                 break;
 995         }
 996
 997         /* Set flow control settings */
 998         ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
 999
1000         switch (hw->fc.requested_mode) {
1001         case I40E_FC_FULL:
1002                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1003                 break;
1004         case I40E_FC_TX_PAUSE:
1005                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1006                                                      Asym_Pause);
1007                 break;
1008         case I40E_FC_RX_PAUSE:
1009                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1010                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1011                                                      Asym_Pause);
1012                 break;
1013         default:
1014                 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
1015                 ethtool_link_ksettings_del_link_mode(ks, advertising,
1016                                                      Asym_Pause);
1017                 break;
1018         }
1019
1020         return 0;
1021 }
1022
1023 /**
1024  * i40e_set_link_ksettings - Set Speed and Duplex
1025  * @netdev: network interface device structure
1026  * @ks: ethtool ksettings
1027  *
1028  * Set speed/duplex per media_types advertised/forced
1029  **/
1030 static int i40e_set_link_ksettings(struct net_device *netdev,
1031                                    const struct ethtool_link_ksettings *ks)
1032 {
1033         struct i40e_netdev_priv *np = netdev_priv(netdev);
1034         struct i40e_aq_get_phy_abilities_resp abilities;
1035         struct ethtool_link_ksettings safe_ks;
1036         struct ethtool_link_ksettings copy_ks;
1037         struct i40e_aq_set_phy_config config;
1038         struct i40e_pf *pf = np->vsi->back;
1039         struct i40e_vsi *vsi = np->vsi;
1040         struct i40e_hw *hw = &pf->hw;
1041         bool autoneg_changed = false;
1042         i40e_status status = 0;
1043         int timeout = 50;
1044         int err = 0;
1045         u8 autoneg;
1046
1047         /* Changing port settings is not supported if this isn't the
1048          * port's controlling PF
1049          */
1050         if (hw->partition_id != 1) {
1051                 i40e_partition_setting_complaint(pf);
1052                 return -EOPNOTSUPP;
1053         }
1054         if (vsi != pf->vsi[pf->lan_vsi])
1055                 return -EOPNOTSUPP;
1056         if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
1057             hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
1058             hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
1059             hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
1060             hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
1061                 return -EOPNOTSUPP;
1062         if (hw->device_id == I40E_DEV_ID_KX_B ||
1063             hw->device_id == I40E_DEV_ID_KX_C ||
1064             hw->device_id == I40E_DEV_ID_20G_KR2 ||
1065             hw->device_id == I40E_DEV_ID_20G_KR2_A ||
1066             hw->device_id == I40E_DEV_ID_25G_B ||
1067             hw->device_id == I40E_DEV_ID_KX_X722) {
1068                 netdev_info(netdev, "Changing settings is not supported on backplane.\n");
1069                 return -EOPNOTSUPP;
1070         }
1071
1072         /* copy the ksettings to copy_ks to avoid modifying the origin */
1073         memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
1074
1075         /* save autoneg out of ksettings */
1076         autoneg = copy_ks.base.autoneg;
1077
1078         /* get our own copy of the bits to check against */
1079         memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
1080         safe_ks.base.cmd = copy_ks.base.cmd;
1081         safe_ks.base.link_mode_masks_nwords =
1082                 copy_ks.base.link_mode_masks_nwords;
1083         i40e_get_link_ksettings(netdev, &safe_ks);
1084
1085         /* Get link modes supported by hardware and check against modes
1086          * requested by the user.  Return an error if unsupported mode was set.
1087          */
1088         if (!bitmap_subset(copy_ks.link_modes.advertising,
1089                            safe_ks.link_modes.supported,
1090                            __ETHTOOL_LINK_MODE_MASK_NBITS))
1091                 return -EINVAL;
1092
1093         /* set autoneg back to what it currently is */
1094         copy_ks.base.autoneg = safe_ks.base.autoneg;
1095
1096         /* If copy_ks.base and safe_ks.base are not the same now, then they are
1097          * trying to set something that we do not support.
1098          */
1099         if (memcmp(&copy_ks.base, &safe_ks.base,
1100                    sizeof(struct ethtool_link_settings)))
1101                 return -EOPNOTSUPP;
1102
1103         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1104                 timeout--;
1105                 if (!timeout)
1106                         return -EBUSY;
1107                 usleep_range(1000, 2000);
1108         }
1109
1110         /* Get the current phy config */
1111         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1112                                               NULL);
1113         if (status) {
1114                 err = -EAGAIN;
1115                 goto done;
1116         }
1117
1118         /* Copy abilities to config in case autoneg is not
1119          * set below
1120          */
1121         memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
1122         config.abilities = abilities.abilities;
1123
1124         /* Check autoneg */
1125         if (autoneg == AUTONEG_ENABLE) {
1126                 /* If autoneg was not already enabled */
1127                 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
1128                         /* If autoneg is not supported, return error */
1129                         if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
1130                                                                    supported,
1131                                                                    Autoneg)) {
1132                                 netdev_info(netdev, "Autoneg not supported on this phy\n");
1133                                 err = -EINVAL;
1134                                 goto done;
1135                         }
1136                         /* Autoneg is allowed to change */
1137                         config.abilities = abilities.abilities |
1138                                            I40E_AQ_PHY_ENABLE_AN;
1139                         autoneg_changed = true;
1140                 }
1141         } else {
1142                 /* If autoneg is currently enabled */
1143                 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
1144                         /* If autoneg is supported 10GBASE_T is the only PHY
1145                          * that can disable it, so otherwise return error
1146                          */
1147                         if (ethtool_link_ksettings_test_link_mode(&safe_ks,
1148                                                                   supported,
1149                                                                   Autoneg) &&
1150                             hw->phy.link_info.phy_type !=
1151                             I40E_PHY_TYPE_10GBASE_T) {
1152                                 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
1153                                 err = -EINVAL;
1154                                 goto done;
1155                         }
1156                         /* Autoneg is allowed to change */
1157                         config.abilities = abilities.abilities &
1158                                            ~I40E_AQ_PHY_ENABLE_AN;
1159                         autoneg_changed = true;
1160                 }
1161         }
1162
1163         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1164                                                   100baseT_Full))
1165                 config.link_speed |= I40E_LINK_SPEED_100MB;
1166         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1167                                                   1000baseT_Full) ||
1168             ethtool_link_ksettings_test_link_mode(ks, advertising,
1169                                                   1000baseX_Full) ||
1170             ethtool_link_ksettings_test_link_mode(ks, advertising,
1171                                                   1000baseKX_Full))
1172                 config.link_speed |= I40E_LINK_SPEED_1GB;
1173         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1174                                                   10000baseT_Full) ||
1175             ethtool_link_ksettings_test_link_mode(ks, advertising,
1176                                                   10000baseKX4_Full) ||
1177             ethtool_link_ksettings_test_link_mode(ks, advertising,
1178                                                   10000baseKR_Full) ||
1179             ethtool_link_ksettings_test_link_mode(ks, advertising,
1180                                                   10000baseCR_Full) ||
1181             ethtool_link_ksettings_test_link_mode(ks, advertising,
1182                                                   10000baseSR_Full) ||
1183             ethtool_link_ksettings_test_link_mode(ks, advertising,
1184                                                   10000baseLR_Full))
1185                 config.link_speed |= I40E_LINK_SPEED_10GB;
1186         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1187                                                   20000baseKR2_Full))
1188                 config.link_speed |= I40E_LINK_SPEED_20GB;
1189         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1190                                                   25000baseCR_Full) ||
1191             ethtool_link_ksettings_test_link_mode(ks, advertising,
1192                                                   25000baseKR_Full) ||
1193             ethtool_link_ksettings_test_link_mode(ks, advertising,
1194                                                   25000baseSR_Full))
1195                 config.link_speed |= I40E_LINK_SPEED_25GB;
1196         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1197                                                   40000baseKR4_Full) ||
1198             ethtool_link_ksettings_test_link_mode(ks, advertising,
1199                                                   40000baseCR4_Full) ||
1200             ethtool_link_ksettings_test_link_mode(ks, advertising,
1201                                                   40000baseSR4_Full) ||
1202             ethtool_link_ksettings_test_link_mode(ks, advertising,
1203                                                   40000baseLR4_Full))
1204                 config.link_speed |= I40E_LINK_SPEED_40GB;
1205
1206         /* If speed didn't get set, set it to what it currently is.
1207          * This is needed because if advertise is 0 (as it is when autoneg
1208          * is disabled) then speed won't get set.
1209          */
1210         if (!config.link_speed)
1211                 config.link_speed = abilities.link_speed;
1212         if (autoneg_changed || abilities.link_speed != config.link_speed) {
1213                 /* copy over the rest of the abilities */
1214                 config.phy_type = abilities.phy_type;
1215                 config.phy_type_ext = abilities.phy_type_ext;
1216                 config.eee_capability = abilities.eee_capability;
1217                 config.eeer = abilities.eeer_val;
1218                 config.low_power_ctrl = abilities.d3_lpan;
1219                 config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
1220                                     I40E_AQ_PHY_FEC_CONFIG_MASK;
1221
1222                 /* save the requested speeds */
1223                 hw->phy.link_info.requested_speeds = config.link_speed;
1224                 /* set link and auto negotiation so changes take effect */
1225                 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1226                 /* If link is up put link down */
1227                 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
1228                         /* Tell the OS link is going down, the link will go
1229                          * back up when fw says it is ready asynchronously
1230                          */
1231                         i40e_print_link_message(vsi, false);
1232                         netif_carrier_off(netdev);
1233                         netif_tx_stop_all_queues(netdev);
1234                 }
1235
1236                 /* make the aq call */
1237                 status = i40e_aq_set_phy_config(hw, &config, NULL);
1238                 if (status) {
1239                         netdev_info(netdev,
1240                                     "Set phy config failed, err %s aq_err %s\n",
1241                                     i40e_stat_str(hw, status),
1242                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1243                         err = -EAGAIN;
1244                         goto done;
1245                 }
1246
1247                 status = i40e_update_link_info(hw);
1248                 if (status)
1249                         netdev_dbg(netdev,
1250                                    "Updating link info failed with err %s aq_err %s\n",
1251                                    i40e_stat_str(hw, status),
1252                                    i40e_aq_str(hw, hw->aq.asq_last_status));
1253
1254         } else {
1255                 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
1256         }
1257
1258 done:
1259         clear_bit(__I40E_CONFIG_BUSY, pf->state);
1260
1261         return err;
1262 }
1263
1264 static int i40e_nway_reset(struct net_device *netdev)
1265 {
1266         /* restart autonegotiation */
1267         struct i40e_netdev_priv *np = netdev_priv(netdev);
1268         struct i40e_pf *pf = np->vsi->back;
1269         struct i40e_hw *hw = &pf->hw;
1270         bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
1271         i40e_status ret = 0;
1272
1273         ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
1274         if (ret) {
1275                 netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
1276                             i40e_stat_str(hw, ret),
1277                             i40e_aq_str(hw, hw->aq.asq_last_status));
1278                 return -EIO;
1279         }
1280
1281         return 0;
1282 }
1283
1284 /**
1285  * i40e_get_pauseparam -  Get Flow Control status
1286  * @netdev: netdevice structure
1287  * @pause: buffer to return pause parameters
1288  *
1289  * Return tx/rx-pause status
1290  **/
1291 static void i40e_get_pauseparam(struct net_device *netdev,
1292                                 struct ethtool_pauseparam *pause)
1293 {
1294         struct i40e_netdev_priv *np = netdev_priv(netdev);
1295         struct i40e_pf *pf = np->vsi->back;
1296         struct i40e_hw *hw = &pf->hw;
1297         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1298         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1299
1300         pause->autoneg =
1301                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1302                   AUTONEG_ENABLE : AUTONEG_DISABLE);
1303
1304         /* PFC enabled so report LFC as off */
1305         if (dcbx_cfg->pfc.pfcenable) {
1306                 pause->rx_pause = 0;
1307                 pause->tx_pause = 0;
1308                 return;
1309         }
1310
1311         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
1312                 pause->rx_pause = 1;
1313         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
1314                 pause->tx_pause = 1;
1315         } else if (hw->fc.current_mode == I40E_FC_FULL) {
1316                 pause->rx_pause = 1;
1317                 pause->tx_pause = 1;
1318         }
1319 }
1320
1321 /**
1322  * i40e_set_pauseparam - Set Flow Control parameter
1323  * @netdev: network interface device structure
1324  * @pause: return tx/rx flow control status
1325  **/
1326 static int i40e_set_pauseparam(struct net_device *netdev,
1327                                struct ethtool_pauseparam *pause)
1328 {
1329         struct i40e_netdev_priv *np = netdev_priv(netdev);
1330         struct i40e_pf *pf = np->vsi->back;
1331         struct i40e_vsi *vsi = np->vsi;
1332         struct i40e_hw *hw = &pf->hw;
1333         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1334         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1335         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1336         i40e_status status;
1337         u8 aq_failures;
1338         int err = 0;
1339         u32 is_an;
1340
1341         /* Changing the port's flow control is not supported if this isn't the
1342          * port's controlling PF
1343          */
1344         if (hw->partition_id != 1) {
1345                 i40e_partition_setting_complaint(pf);
1346                 return -EOPNOTSUPP;
1347         }
1348
1349         if (vsi != pf->vsi[pf->lan_vsi])
1350                 return -EOPNOTSUPP;
1351
1352         is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
1353         if (pause->autoneg != is_an) {
1354                 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
1355                 return -EOPNOTSUPP;
1356         }
1357
1358         /* If we have link and don't have autoneg */
1359         if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
1360                 /* Send message that it might not necessarily work*/
1361                 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
1362         }
1363
1364         if (dcbx_cfg->pfc.pfcenable) {
1365                 netdev_info(netdev,
1366                             "Priority flow control enabled. Cannot set link flow control.\n");
1367                 return -EOPNOTSUPP;
1368         }
1369
1370         if (pause->rx_pause && pause->tx_pause)
1371                 hw->fc.requested_mode = I40E_FC_FULL;
1372         else if (pause->rx_pause && !pause->tx_pause)
1373                 hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1374         else if (!pause->rx_pause && pause->tx_pause)
1375                 hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1376         else if (!pause->rx_pause && !pause->tx_pause)
1377                 hw->fc.requested_mode = I40E_FC_NONE;
1378         else
1379                  return -EINVAL;
1380
1381         /* Tell the OS link is going down, the link will go back up when fw
1382          * says it is ready asynchronously
1383          */
1384         i40e_print_link_message(vsi, false);
1385         netif_carrier_off(netdev);
1386         netif_tx_stop_all_queues(netdev);
1387
1388         /* Set the fc mode and only restart an if link is up*/
1389         status = i40e_set_fc(hw, &aq_failures, link_up);
1390
1391         if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1392                 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
1393                             i40e_stat_str(hw, status),
1394                             i40e_aq_str(hw, hw->aq.asq_last_status));
1395                 err = -EAGAIN;
1396         }
1397         if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1398                 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
1399                             i40e_stat_str(hw, status),
1400                             i40e_aq_str(hw, hw->aq.asq_last_status));
1401                 err = -EAGAIN;
1402         }
1403         if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1404                 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
1405                             i40e_stat_str(hw, status),
1406                             i40e_aq_str(hw, hw->aq.asq_last_status));
1407                 err = -EAGAIN;
1408         }
1409
1410         if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1411                 /* Give it a little more time to try to come back */
1412                 msleep(75);
1413                 if (!test_bit(__I40E_DOWN, pf->state))
1414                         return i40e_nway_reset(netdev);
1415         }
1416
1417         return err;
1418 }
1419
1420 static u32 i40e_get_msglevel(struct net_device *netdev)
1421 {
1422         struct i40e_netdev_priv *np = netdev_priv(netdev);
1423         struct i40e_pf *pf = np->vsi->back;
1424         u32 debug_mask = pf->hw.debug_mask;
1425
1426         if (debug_mask)
1427                 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
1428
1429         return pf->msg_enable;
1430 }
1431
1432 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1433 {
1434         struct i40e_netdev_priv *np = netdev_priv(netdev);
1435         struct i40e_pf *pf = np->vsi->back;
1436
1437         if (I40E_DEBUG_USER & data)
1438                 pf->hw.debug_mask = data;
1439         else
1440                 pf->msg_enable = data;
1441 }
1442
1443 static int i40e_get_regs_len(struct net_device *netdev)
1444 {
1445         int reg_count = 0;
1446         int i;
1447
1448         for (i = 0; i40e_reg_list[i].offset != 0; i++)
1449                 reg_count += i40e_reg_list[i].elements;
1450
1451         return reg_count * sizeof(u32);
1452 }
1453
1454 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1455                           void *p)
1456 {
1457         struct i40e_netdev_priv *np = netdev_priv(netdev);
1458         struct i40e_pf *pf = np->vsi->back;
1459         struct i40e_hw *hw = &pf->hw;
1460         u32 *reg_buf = p;
1461         unsigned int i, j, ri;
1462         u32 reg;
1463
1464         /* Tell ethtool which driver-version-specific regs output we have.
1465          *
1466          * At some point, if we have ethtool doing special formatting of
1467          * this data, it will rely on this version number to know how to
1468          * interpret things.  Hence, this needs to be updated if/when the
1469          * diags register table is changed.
1470          */
1471         regs->version = 1;
1472
1473         /* loop through the diags reg table for what to print */
1474         ri = 0;
1475         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1476                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
1477                         reg = i40e_reg_list[i].offset
1478                                 + (j * i40e_reg_list[i].stride);
1479                         reg_buf[ri++] = rd32(hw, reg);
1480                 }
1481         }
1482
1483 }
1484
1485 static int i40e_get_eeprom(struct net_device *netdev,
1486                            struct ethtool_eeprom *eeprom, u8 *bytes)
1487 {
1488         struct i40e_netdev_priv *np = netdev_priv(netdev);
1489         struct i40e_hw *hw = &np->vsi->back->hw;
1490         struct i40e_pf *pf = np->vsi->back;
1491         int ret_val = 0, len, offset;
1492         u8 *eeprom_buff;
1493         u16 i, sectors;
1494         bool last;
1495         u32 magic;
1496
1497 #define I40E_NVM_SECTOR_SIZE  4096
1498         if (eeprom->len == 0)
1499                 return -EINVAL;
1500
1501         /* check for NVMUpdate access method */
1502         magic = hw->vendor_id | (hw->device_id << 16);
1503         if (eeprom->magic && eeprom->magic != magic) {
1504                 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1505                 int errno = 0;
1506
1507                 /* make sure it is the right magic for NVMUpdate */
1508                 if ((eeprom->magic >> 16) != hw->device_id)
1509                         errno = -EINVAL;
1510                 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1511                          test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1512                         errno = -EBUSY;
1513                 else
1514                         ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1515
1516                 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1517                         dev_info(&pf->pdev->dev,
1518                                  "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1519                                  ret_val, hw->aq.asq_last_status, errno,
1520                                  (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1521                                  cmd->offset, cmd->data_size);
1522
1523                 return errno;
1524         }
1525
1526         /* normal ethtool get_eeprom support */
1527         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1528
1529         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
1530         if (!eeprom_buff)
1531                 return -ENOMEM;
1532
1533         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1534         if (ret_val) {
1535                 dev_info(&pf->pdev->dev,
1536                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1537                          ret_val, hw->aq.asq_last_status);
1538                 goto free_buff;
1539         }
1540
1541         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1542         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1543         len = I40E_NVM_SECTOR_SIZE;
1544         last = false;
1545         for (i = 0; i < sectors; i++) {
1546                 if (i == (sectors - 1)) {
1547                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1548                         last = true;
1549                 }
1550                 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1551                 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1552                                 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1553                                 last, NULL);
1554                 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1555                         dev_info(&pf->pdev->dev,
1556                                  "read NVM failed, invalid offset 0x%x\n",
1557                                  offset);
1558                         break;
1559                 } else if (ret_val &&
1560                            hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1561                         dev_info(&pf->pdev->dev,
1562                                  "read NVM failed, access, offset 0x%x\n",
1563                                  offset);
1564                         break;
1565                 } else if (ret_val) {
1566                         dev_info(&pf->pdev->dev,
1567                                  "read NVM failed offset %d err=%d status=0x%x\n",
1568                                  offset, ret_val, hw->aq.asq_last_status);
1569                         break;
1570                 }
1571         }
1572
1573         i40e_release_nvm(hw);
1574         memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1575 free_buff:
1576         kfree(eeprom_buff);
1577         return ret_val;
1578 }
1579
1580 static int i40e_get_eeprom_len(struct net_device *netdev)
1581 {
1582         struct i40e_netdev_priv *np = netdev_priv(netdev);
1583         struct i40e_hw *hw = &np->vsi->back->hw;
1584         u32 val;
1585
1586 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1587         if (hw->mac.type == I40E_MAC_X722) {
1588                 val = X722_EEPROM_SCOPE_LIMIT + 1;
1589                 return val;
1590         }
1591         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1592                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1593                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1594         /* register returns value in power of 2, 64Kbyte chunks. */
1595         val = (64 * 1024) * BIT(val);
1596         return val;
1597 }
1598
1599 static int i40e_set_eeprom(struct net_device *netdev,
1600                            struct ethtool_eeprom *eeprom, u8 *bytes)
1601 {
1602         struct i40e_netdev_priv *np = netdev_priv(netdev);
1603         struct i40e_hw *hw = &np->vsi->back->hw;
1604         struct i40e_pf *pf = np->vsi->back;
1605         struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1606         int ret_val = 0;
1607         int errno = 0;
1608         u32 magic;
1609
1610         /* normal ethtool set_eeprom is not supported */
1611         magic = hw->vendor_id | (hw->device_id << 16);
1612         if (eeprom->magic == magic)
1613                 errno = -EOPNOTSUPP;
1614         /* check for NVMUpdate access method */
1615         else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1616                 errno = -EINVAL;
1617         else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1618                  test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1619                 errno = -EBUSY;
1620         else
1621                 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1622
1623         if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1624                 dev_info(&pf->pdev->dev,
1625                          "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1626                          ret_val, hw->aq.asq_last_status, errno,
1627                          (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1628                          cmd->offset, cmd->data_size);
1629
1630         return errno;
1631 }
1632
1633 static void i40e_get_drvinfo(struct net_device *netdev,
1634                              struct ethtool_drvinfo *drvinfo)
1635 {
1636         struct i40e_netdev_priv *np = netdev_priv(netdev);
1637         struct i40e_vsi *vsi = np->vsi;
1638         struct i40e_pf *pf = vsi->back;
1639
1640         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
1641         strlcpy(drvinfo->version, i40e_driver_version_str,
1642                 sizeof(drvinfo->version));
1643         strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
1644                 sizeof(drvinfo->fw_version));
1645         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
1646                 sizeof(drvinfo->bus_info));
1647         drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1648         if (pf->hw.pf_id == 0)
1649                 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
1650 }
1651
1652 static void i40e_get_ringparam(struct net_device *netdev,
1653                                struct ethtool_ringparam *ring)
1654 {
1655         struct i40e_netdev_priv *np = netdev_priv(netdev);
1656         struct i40e_pf *pf = np->vsi->back;
1657         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
1658
1659         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1660         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1661         ring->rx_mini_max_pending = 0;
1662         ring->rx_jumbo_max_pending = 0;
1663         ring->rx_pending = vsi->rx_rings[0]->count;
1664         ring->tx_pending = vsi->tx_rings[0]->count;
1665         ring->rx_mini_pending = 0;
1666         ring->rx_jumbo_pending = 0;
1667 }
1668
1669 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
1670 {
1671         if (i40e_enabled_xdp_vsi(vsi)) {
1672                 return index < vsi->num_queue_pairs ||
1673                         (index >= vsi->alloc_queue_pairs &&
1674                          index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
1675         }
1676
1677         return index < vsi->num_queue_pairs;
1678 }
1679
1680 static int i40e_set_ringparam(struct net_device *netdev,
1681                               struct ethtool_ringparam *ring)
1682 {
1683         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
1684         struct i40e_netdev_priv *np = netdev_priv(netdev);
1685         struct i40e_hw *hw = &np->vsi->back->hw;
1686         struct i40e_vsi *vsi = np->vsi;
1687         struct i40e_pf *pf = vsi->back;
1688         u32 new_rx_count, new_tx_count;
1689         u16 tx_alloc_queue_pairs;
1690         int timeout = 50;
1691         int i, err = 0;
1692
1693         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
1694                 return -EINVAL;
1695
1696         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1697             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
1698             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1699             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
1700                 netdev_info(netdev,
1701                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
1702                             ring->tx_pending, ring->rx_pending,
1703                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
1704                 return -EINVAL;
1705         }
1706
1707         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1708         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1709
1710         /* if nothing to do return success */
1711         if ((new_tx_count == vsi->tx_rings[0]->count) &&
1712             (new_rx_count == vsi->rx_rings[0]->count))
1713                 return 0;
1714
1715         /* If there is a AF_XDP UMEM attached to any of Rx rings,
1716          * disallow changing the number of descriptors -- regardless
1717          * if the netdev is running or not.
1718          */
1719         if (i40e_xsk_any_rx_ring_enabled(vsi))
1720                 return -EBUSY;
1721
1722         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1723                 timeout--;
1724                 if (!timeout)
1725                         return -EBUSY;
1726                 usleep_range(1000, 2000);
1727         }
1728
1729         if (!netif_running(vsi->netdev)) {
1730                 /* simple case - set for the next time the netdev is started */
1731                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1732                         vsi->tx_rings[i]->count = new_tx_count;
1733                         vsi->rx_rings[i]->count = new_rx_count;
1734                         if (i40e_enabled_xdp_vsi(vsi))
1735                                 vsi->xdp_rings[i]->count = new_tx_count;
1736                 }
1737                 goto done;
1738         }
1739
1740         /* We can't just free everything and then setup again,
1741          * because the ISRs in MSI-X mode get passed pointers
1742          * to the Tx and Rx ring structs.
1743          */
1744
1745         /* alloc updated Tx and XDP Tx resources */
1746         tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
1747                                (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
1748         if (new_tx_count != vsi->tx_rings[0]->count) {
1749                 netdev_info(netdev,
1750                             "Changing Tx descriptor count from %d to %d.\n",
1751                             vsi->tx_rings[0]->count, new_tx_count);
1752                 tx_rings = kcalloc(tx_alloc_queue_pairs,
1753                                    sizeof(struct i40e_ring), GFP_KERNEL);
1754                 if (!tx_rings) {
1755                         err = -ENOMEM;
1756                         goto done;
1757                 }
1758
1759                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
1760                         if (!i40e_active_tx_ring_index(vsi, i))
1761                                 continue;
1762
1763                         tx_rings[i] = *vsi->tx_rings[i];
1764                         tx_rings[i].count = new_tx_count;
1765                         /* the desc and bi pointers will be reallocated in the
1766                          * setup call
1767                          */
1768                         tx_rings[i].desc = NULL;
1769                         tx_rings[i].rx_bi = NULL;
1770                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
1771                         if (err) {
1772                                 while (i) {
1773                                         i--;
1774                                         if (!i40e_active_tx_ring_index(vsi, i))
1775                                                 continue;
1776                                         i40e_free_tx_resources(&tx_rings[i]);
1777                                 }
1778                                 kfree(tx_rings);
1779                                 tx_rings = NULL;
1780
1781                                 goto done;
1782                         }
1783                 }
1784         }
1785
1786         /* alloc updated Rx resources */
1787         if (new_rx_count != vsi->rx_rings[0]->count) {
1788                 netdev_info(netdev,
1789                             "Changing Rx descriptor count from %d to %d\n",
1790                             vsi->rx_rings[0]->count, new_rx_count);
1791                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
1792                                    sizeof(struct i40e_ring), GFP_KERNEL);
1793                 if (!rx_rings) {
1794                         err = -ENOMEM;
1795                         goto free_tx;
1796                 }
1797
1798                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1799                         u16 unused;
1800
1801                         /* clone ring and setup updated count */
1802                         rx_rings[i] = *vsi->rx_rings[i];
1803                         rx_rings[i].count = new_rx_count;
1804                         /* the desc and bi pointers will be reallocated in the
1805                          * setup call
1806                          */
1807                         rx_rings[i].desc = NULL;
1808                         rx_rings[i].rx_bi = NULL;
1809                         /* Clear cloned XDP RX-queue info before setup call */
1810                         memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
1811                         /* this is to allow wr32 to have something to write to
1812                          * during early allocation of Rx buffers
1813                          */
1814                         rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
1815                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
1816                         if (err)
1817                                 goto rx_unwind;
1818
1819                         /* now allocate the Rx buffers to make sure the OS
1820                          * has enough memory, any failure here means abort
1821                          */
1822                         unused = I40E_DESC_UNUSED(&rx_rings[i]);
1823                         err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
1824 rx_unwind:
1825                         if (err) {
1826                                 do {
1827                                         i40e_free_rx_resources(&rx_rings[i]);
1828                                 } while (i--);
1829                                 kfree(rx_rings);
1830                                 rx_rings = NULL;
1831
1832                                 goto free_tx;
1833                         }
1834                 }
1835         }
1836
1837         /* Bring interface down, copy in the new ring info,
1838          * then restore the interface
1839          */
1840         i40e_down(vsi);
1841
1842         if (tx_rings) {
1843                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
1844                         if (i40e_active_tx_ring_index(vsi, i)) {
1845                                 i40e_free_tx_resources(vsi->tx_rings[i]);
1846                                 *vsi->tx_rings[i] = tx_rings[i];
1847                         }
1848                 }
1849                 kfree(tx_rings);
1850                 tx_rings = NULL;
1851         }
1852
1853         if (rx_rings) {
1854                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1855                         i40e_free_rx_resources(vsi->rx_rings[i]);
1856                         /* get the real tail offset */
1857                         rx_rings[i].tail = vsi->rx_rings[i]->tail;
1858                         /* this is to fake out the allocation routine
1859                          * into thinking it has to realloc everything
1860                          * but the recycling logic will let us re-use
1861                          * the buffers allocated above
1862                          */
1863                         rx_rings[i].next_to_use = 0;
1864                         rx_rings[i].next_to_clean = 0;
1865                         rx_rings[i].next_to_alloc = 0;
1866                         /* do a struct copy */
1867                         *vsi->rx_rings[i] = rx_rings[i];
1868                 }
1869                 kfree(rx_rings);
1870                 rx_rings = NULL;
1871         }
1872
1873         i40e_up(vsi);
1874
1875 free_tx:
1876         /* error cleanup if the Rx allocations failed after getting Tx */
1877         if (tx_rings) {
1878                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
1879                         if (i40e_active_tx_ring_index(vsi, i))
1880                                 i40e_free_tx_resources(vsi->tx_rings[i]);
1881                 }
1882                 kfree(tx_rings);
1883                 tx_rings = NULL;
1884         }
1885
1886 done:
1887         clear_bit(__I40E_CONFIG_BUSY, pf->state);
1888
1889         return err;
1890 }
1891
1892 /**
1893  * i40e_get_stats_count - return the stats count for a device
1894  * @netdev: the netdev to return the count for
1895  *
1896  * Returns the total number of statistics for this netdev. Note that even
1897  * though this is a function, it is required that the count for a specific
1898  * netdev must never change. Basing the count on static values such as the
1899  * maximum number of queues or the device type is ok. However, the API for
1900  * obtaining stats is *not* safe against changes based on non-static
1901  * values such as the *current* number of queues, or runtime flags.
1902  *
1903  * If a statistic is not always enabled, return it as part of the count
1904  * anyways, always return its string, and report its value as zero.
1905  **/
1906 static int i40e_get_stats_count(struct net_device *netdev)
1907 {
1908         struct i40e_netdev_priv *np = netdev_priv(netdev);
1909         struct i40e_vsi *vsi = np->vsi;
1910         struct i40e_pf *pf = vsi->back;
1911         int stats_len;
1912
1913         if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
1914                 stats_len = I40E_PF_STATS_LEN;
1915         else
1916                 stats_len = I40E_VSI_STATS_LEN;
1917
1918         /* The number of stats reported for a given net_device must remain
1919          * constant throughout the life of that device.
1920          *
1921          * This is because the API for obtaining the size, strings, and stats
1922          * is spread out over three separate ethtool ioctls. There is no safe
1923          * way to lock the number of stats across these calls, so we must
1924          * assume that they will never change.
1925          *
1926          * Due to this, we report the maximum number of queues, even if not
1927          * every queue is currently configured. Since we always allocate
1928          * queues in pairs, we'll just use netdev->num_tx_queues * 2. This
1929          * works because the num_tx_queues is set at device creation and never
1930          * changes.
1931          */
1932         stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
1933
1934         return stats_len;
1935 }
1936
1937 static int i40e_get_sset_count(struct net_device *netdev, int sset)
1938 {
1939         struct i40e_netdev_priv *np = netdev_priv(netdev);
1940         struct i40e_vsi *vsi = np->vsi;
1941         struct i40e_pf *pf = vsi->back;
1942
1943         switch (sset) {
1944         case ETH_SS_TEST:
1945                 return I40E_TEST_LEN;
1946         case ETH_SS_STATS:
1947                 return i40e_get_stats_count(netdev);
1948         case ETH_SS_PRIV_FLAGS:
1949                 return I40E_PRIV_FLAGS_STR_LEN +
1950                         (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
1951         default:
1952                 return -EOPNOTSUPP;
1953         }
1954 }
1955
1956 /**
1957  * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
1958  * @pf: the PF device structure
1959  * @i: the priority value to copy
1960  *
1961  * The PFC stats are found as arrays in pf->stats, which is not easy to pass
1962  * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
1963  * of the PFC stats for the given priority.
1964  **/
1965 static inline struct i40e_pfc_stats
1966 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
1967 {
1968 #define I40E_GET_PFC_STAT(stat, priority) \
1969         .stat = pf->stats.stat[priority]
1970
1971         struct i40e_pfc_stats pfc = {
1972                 I40E_GET_PFC_STAT(priority_xon_rx, i),
1973                 I40E_GET_PFC_STAT(priority_xoff_rx, i),
1974                 I40E_GET_PFC_STAT(priority_xon_tx, i),
1975                 I40E_GET_PFC_STAT(priority_xoff_tx, i),
1976                 I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
1977         };
1978         return pfc;
1979 }
1980
1981 /**
1982  * i40e_get_ethtool_stats - copy stat values into supplied buffer
1983  * @netdev: the netdev to collect stats for
1984  * @stats: ethtool stats command structure
1985  * @data: ethtool supplied buffer
1986  *
1987  * Copy the stats values for this netdev into the buffer. Expects data to be
1988  * pre-allocated to the size returned by i40e_get_stats_count.. Note that all
1989  * statistics must be copied in a static order, and the count must not change
1990  * for a given netdev. See i40e_get_stats_count for more details.
1991  *
1992  * If a statistic is not currently valid (such as a disabled queue), this
1993  * function reports its value as zero.
1994  **/
1995 static void i40e_get_ethtool_stats(struct net_device *netdev,
1996                                    struct ethtool_stats *stats, u64 *data)
1997 {
1998         struct i40e_netdev_priv *np = netdev_priv(netdev);
1999         struct i40e_vsi *vsi = np->vsi;
2000         struct i40e_pf *pf = vsi->back;
2001         struct i40e_veb *veb = pf->veb[pf->lan_veb];
2002         unsigned int i;
2003         bool veb_stats;
2004         u64 *p = data;
2005
2006         i40e_update_stats(vsi);
2007
2008         i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
2009                                i40e_gstrings_net_stats);
2010
2011         i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
2012
2013         rcu_read_lock();
2014         for (i = 0; i < netdev->num_tx_queues; i++) {
2015                 i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
2016                 i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
2017         }
2018         rcu_read_unlock();
2019
2020         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2021                 goto check_data_pointer;
2022
2023         veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
2024                      (pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
2025
2026         /* If veb stats aren't enabled, pass NULL instead of the veb so that
2027          * we initialize stats to zero and update the data pointer
2028          * intelligently
2029          */
2030         i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2031                                i40e_gstrings_veb_stats);
2032
2033         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2034                 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2035                                        i40e_gstrings_veb_tc_stats);
2036
2037         i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
2038
2039         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
2040                 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
2041
2042                 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
2043         }
2044
2045 check_data_pointer:
2046         WARN_ONCE(data - p != i40e_get_stats_count(netdev),
2047                   "ethtool stats count mismatch!");
2048 }
2049
2050 /**
2051  * i40e_get_stat_strings - copy stat strings into supplied buffer
2052  * @netdev: the netdev to collect strings for
2053  * @data: supplied buffer to copy strings into
2054  *
2055  * Copy the strings related to stats for this netdev. Expects data to be
2056  * pre-allocated with the size reported by i40e_get_stats_count. Note that the
2057  * strings must be copied in a static order and the total count must not
2058  * change for a given netdev. See i40e_get_stats_count for more details.
2059  **/
2060 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
2061 {
2062         struct i40e_netdev_priv *np = netdev_priv(netdev);
2063         struct i40e_vsi *vsi = np->vsi;
2064         struct i40e_pf *pf = vsi->back;
2065         unsigned int i;
2066         u8 *p = data;
2067
2068         i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
2069
2070         i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
2071
2072         for (i = 0; i < netdev->num_tx_queues; i++) {
2073                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2074                                       "tx", i);
2075                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2076                                       "rx", i);
2077         }
2078
2079         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2080                 return;
2081
2082         i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
2083
2084         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2085                 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
2086
2087         i40e_add_stat_strings(&data, i40e_gstrings_stats);
2088
2089         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
2090                 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
2091
2092         WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
2093                   "stat strings count mismatch!");
2094 }
2095
2096 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
2097 {
2098         struct i40e_netdev_priv *np = netdev_priv(netdev);
2099         struct i40e_vsi *vsi = np->vsi;
2100         struct i40e_pf *pf = vsi->back;
2101         char *p = (char *)data;
2102         unsigned int i;
2103
2104         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
2105                 snprintf(p, ETH_GSTRING_LEN, "%s",
2106                          i40e_gstrings_priv_flags[i].flag_string);
2107                 p += ETH_GSTRING_LEN;
2108         }
2109         if (pf->hw.pf_id != 0)
2110                 return;
2111         for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++) {
2112                 snprintf(p, ETH_GSTRING_LEN, "%s",
2113                          i40e_gl_gstrings_priv_flags[i].flag_string);
2114                 p += ETH_GSTRING_LEN;
2115         }
2116 }
2117
2118 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
2119                              u8 *data)
2120 {
2121         switch (stringset) {
2122         case ETH_SS_TEST:
2123                 memcpy(data, i40e_gstrings_test,
2124                        I40E_TEST_LEN * ETH_GSTRING_LEN);
2125                 break;
2126         case ETH_SS_STATS:
2127                 i40e_get_stat_strings(netdev, data);
2128                 break;
2129         case ETH_SS_PRIV_FLAGS:
2130                 i40e_get_priv_flag_strings(netdev, data);
2131                 break;
2132         default:
2133                 break;
2134         }
2135 }
2136
2137 static int i40e_get_ts_info(struct net_device *dev,
2138                             struct ethtool_ts_info *info)
2139 {
2140         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
2141
2142         /* only report HW timestamping if PTP is enabled */
2143         if (!(pf->flags & I40E_FLAG_PTP))
2144                 return ethtool_op_get_ts_info(dev, info);
2145
2146         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
2147                                 SOF_TIMESTAMPING_RX_SOFTWARE |
2148                                 SOF_TIMESTAMPING_SOFTWARE |
2149                                 SOF_TIMESTAMPING_TX_HARDWARE |
2150                                 SOF_TIMESTAMPING_RX_HARDWARE |
2151                                 SOF_TIMESTAMPING_RAW_HARDWARE;
2152
2153         if (pf->ptp_clock)
2154                 info->phc_index = ptp_clock_index(pf->ptp_clock);
2155         else
2156                 info->phc_index = -1;
2157
2158         info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2159
2160         info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
2161                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
2162                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2163                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
2164
2165         if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
2166                 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2167                                     BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2168                                     BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2169                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
2170                                     BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2171                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2172                                     BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2173                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
2174
2175         return 0;
2176 }
2177
2178 static int i40e_link_test(struct net_device *netdev, u64 *data)
2179 {
2180         struct i40e_netdev_priv *np = netdev_priv(netdev);
2181         struct i40e_pf *pf = np->vsi->back;
2182         i40e_status status;
2183         bool link_up = false;
2184
2185         netif_info(pf, hw, netdev, "link test\n");
2186         status = i40e_get_link_status(&pf->hw, &link_up);
2187         if (status) {
2188                 netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
2189                 *data = 1;
2190                 return *data;
2191         }
2192
2193         if (link_up)
2194                 *data = 0;
2195         else
2196                 *data = 1;
2197
2198         return *data;
2199 }
2200
2201 static int i40e_reg_test(struct net_device *netdev, u64 *data)
2202 {
2203         struct i40e_netdev_priv *np = netdev_priv(netdev);
2204         struct i40e_pf *pf = np->vsi->back;
2205
2206         netif_info(pf, hw, netdev, "register test\n");
2207         *data = i40e_diag_reg_test(&pf->hw);
2208
2209         return *data;
2210 }
2211
2212 static int i40e_eeprom_test(struct net_device *netdev, u64 *data)
2213 {
2214         struct i40e_netdev_priv *np = netdev_priv(netdev);
2215         struct i40e_pf *pf = np->vsi->back;
2216
2217         netif_info(pf, hw, netdev, "eeprom test\n");
2218         *data = i40e_diag_eeprom_test(&pf->hw);
2219
2220         /* forcebly clear the NVM Update state machine */
2221         pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
2222
2223         return *data;
2224 }
2225
2226 static int i40e_intr_test(struct net_device *netdev, u64 *data)
2227 {
2228         struct i40e_netdev_priv *np = netdev_priv(netdev);
2229         struct i40e_pf *pf = np->vsi->back;
2230         u16 swc_old = pf->sw_int_count;
2231
2232         netif_info(pf, hw, netdev, "interrupt test\n");
2233         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
2234              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
2235               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
2236               I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
2237               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
2238               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
2239         usleep_range(1000, 2000);
2240         *data = (swc_old == pf->sw_int_count);
2241
2242         return *data;
2243 }
2244
2245 static inline bool i40e_active_vfs(struct i40e_pf *pf)
2246 {
2247         struct i40e_vf *vfs = pf->vf;
2248         int i;
2249
2250         for (i = 0; i < pf->num_alloc_vfs; i++)
2251                 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2252                         return true;
2253         return false;
2254 }
2255
2256 static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
2257 {
2258         return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
2259 }
2260
2261 static void i40e_diag_test(struct net_device *netdev,
2262                            struct ethtool_test *eth_test, u64 *data)
2263 {
2264         struct i40e_netdev_priv *np = netdev_priv(netdev);
2265         bool if_running = netif_running(netdev);
2266         struct i40e_pf *pf = np->vsi->back;
2267
2268         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
2269                 /* Offline tests */
2270                 netif_info(pf, drv, netdev, "offline testing starting\n");
2271
2272                 set_bit(__I40E_TESTING, pf->state);
2273
2274                 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2275                         dev_warn(&pf->pdev->dev,
2276                                  "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2277                         data[I40E_ETH_TEST_REG]         = 1;
2278                         data[I40E_ETH_TEST_EEPROM]      = 1;
2279                         data[I40E_ETH_TEST_INTR]        = 1;
2280                         data[I40E_ETH_TEST_LINK]        = 1;
2281                         eth_test->flags |= ETH_TEST_FL_FAILED;
2282                         clear_bit(__I40E_TESTING, pf->state);
2283                         goto skip_ol_tests;
2284                 }
2285
2286                 /* If the device is online then take it offline */
2287                 if (if_running)
2288                         /* indicate we're in test mode */
2289                         i40e_close(netdev);
2290                 else
2291                         /* This reset does not affect link - if it is
2292                          * changed to a type of reset that does affect
2293                          * link then the following link test would have
2294                          * to be moved to before the reset
2295                          */
2296                         i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2297
2298                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2299                         eth_test->flags |= ETH_TEST_FL_FAILED;
2300
2301                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
2302                         eth_test->flags |= ETH_TEST_FL_FAILED;
2303
2304                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
2305                         eth_test->flags |= ETH_TEST_FL_FAILED;
2306
2307                 /* run reg test last, a reset is required after it */
2308                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
2309                         eth_test->flags |= ETH_TEST_FL_FAILED;
2310
2311                 clear_bit(__I40E_TESTING, pf->state);
2312                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2313
2314                 if (if_running)
2315                         i40e_open(netdev);
2316         } else {
2317                 /* Online tests */
2318                 netif_info(pf, drv, netdev, "online testing starting\n");
2319
2320                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2321                         eth_test->flags |= ETH_TEST_FL_FAILED;
2322
2323                 /* Offline only tests, not run in online; pass by default */
2324                 data[I40E_ETH_TEST_REG] = 0;
2325                 data[I40E_ETH_TEST_EEPROM] = 0;
2326                 data[I40E_ETH_TEST_INTR] = 0;
2327         }
2328
2329 skip_ol_tests:
2330
2331         netif_info(pf, drv, netdev, "testing finished\n");
2332 }
2333
2334 static void i40e_get_wol(struct net_device *netdev,
2335                          struct ethtool_wolinfo *wol)
2336 {
2337         struct i40e_netdev_priv *np = netdev_priv(netdev);
2338         struct i40e_pf *pf = np->vsi->back;
2339         struct i40e_hw *hw = &pf->hw;
2340         u16 wol_nvm_bits;
2341
2342         /* NVM bit on means WoL disabled for the port */
2343         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2344         if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
2345                 wol->supported = 0;
2346                 wol->wolopts = 0;
2347         } else {
2348                 wol->supported = WAKE_MAGIC;
2349                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
2350         }
2351 }
2352
2353 /**
2354  * i40e_set_wol - set the WakeOnLAN configuration
2355  * @netdev: the netdev in question
2356  * @wol: the ethtool WoL setting data
2357  **/
2358 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2359 {
2360         struct i40e_netdev_priv *np = netdev_priv(netdev);
2361         struct i40e_pf *pf = np->vsi->back;
2362         struct i40e_vsi *vsi = np->vsi;
2363         struct i40e_hw *hw = &pf->hw;
2364         u16 wol_nvm_bits;
2365
2366         /* WoL not supported if this isn't the controlling PF on the port */
2367         if (hw->partition_id != 1) {
2368                 i40e_partition_setting_complaint(pf);
2369                 return -EOPNOTSUPP;
2370         }
2371
2372         if (vsi != pf->vsi[pf->lan_vsi])
2373                 return -EOPNOTSUPP;
2374
2375         /* NVM bit on means WoL disabled for the port */
2376         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2377         if (BIT(hw->port) & wol_nvm_bits)
2378                 return -EOPNOTSUPP;
2379
2380         /* only magic packet is supported */
2381         if (wol->wolopts && (wol->wolopts != WAKE_MAGIC)
2382                           | (wol->wolopts != WAKE_FILTER))
2383                 return -EOPNOTSUPP;
2384
2385         /* is this a new value? */
2386         if (pf->wol_en != !!wol->wolopts) {
2387                 pf->wol_en = !!wol->wolopts;
2388                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
2389         }
2390
2391         return 0;
2392 }
2393
2394 static int i40e_set_phys_id(struct net_device *netdev,
2395                             enum ethtool_phys_id_state state)
2396 {
2397         struct i40e_netdev_priv *np = netdev_priv(netdev);
2398         i40e_status ret = 0;
2399         struct i40e_pf *pf = np->vsi->back;
2400         struct i40e_hw *hw = &pf->hw;
2401         int blink_freq = 2;
2402         u16 temp_status;
2403
2404         switch (state) {
2405         case ETHTOOL_ID_ACTIVE:
2406                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2407                         pf->led_status = i40e_led_get(hw);
2408                 } else {
2409                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2410                                 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
2411                                                       NULL);
2412                         ret = i40e_led_get_phy(hw, &temp_status,
2413                                                &pf->phy_led_val);
2414                         pf->led_status = temp_status;
2415                 }
2416                 return blink_freq;
2417         case ETHTOOL_ID_ON:
2418                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2419                         i40e_led_set(hw, 0xf, false);
2420                 else
2421                         ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
2422                 break;
2423         case ETHTOOL_ID_OFF:
2424                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2425                         i40e_led_set(hw, 0x0, false);
2426                 else
2427                         ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
2428                 break;
2429         case ETHTOOL_ID_INACTIVE:
2430                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2431                         i40e_led_set(hw, pf->led_status, false);
2432                 } else {
2433                         ret = i40e_led_set_phy(hw, false, pf->led_status,
2434                                                (pf->phy_led_val |
2435                                                I40E_PHY_LED_MODE_ORIG));
2436                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2437                                 i40e_aq_set_phy_debug(hw, 0, NULL);
2438                 }
2439                 break;
2440         default:
2441                 break;
2442         }
2443                 if (ret)
2444                         return -ENOENT;
2445                 else
2446                         return 0;
2447 }
2448
2449 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2450  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2451  * 125us (8000 interrupts per second) == ITR(62)
2452  */
2453
2454 /**
2455  * __i40e_get_coalesce - get per-queue coalesce settings
2456  * @netdev: the netdev to check
2457  * @ec: ethtool coalesce data structure
2458  * @queue: which queue to pick
2459  *
2460  * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2461  * are per queue. If queue is <0 then we default to queue 0 as the
2462  * representative value.
2463  **/
2464 static int __i40e_get_coalesce(struct net_device *netdev,
2465                                struct ethtool_coalesce *ec,
2466                                int queue)
2467 {
2468         struct i40e_netdev_priv *np = netdev_priv(netdev);
2469         struct i40e_ring *rx_ring, *tx_ring;
2470         struct i40e_vsi *vsi = np->vsi;
2471
2472         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2473         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2474
2475         /* rx and tx usecs has per queue value. If user doesn't specify the
2476          * queue, return queue 0's value to represent.
2477          */
2478         if (queue < 0)
2479                 queue = 0;
2480         else if (queue >= vsi->num_queue_pairs)
2481                 return -EINVAL;
2482
2483         rx_ring = vsi->rx_rings[queue];
2484         tx_ring = vsi->tx_rings[queue];
2485
2486         if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2487                 ec->use_adaptive_rx_coalesce = 1;
2488
2489         if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2490                 ec->use_adaptive_tx_coalesce = 1;
2491
2492         ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2493         ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2494
2495         /* we use the _usecs_high to store/set the interrupt rate limit
2496          * that the hardware supports, that almost but not quite
2497          * fits the original intent of the ethtool variable,
2498          * the rx_coalesce_usecs_high limits total interrupts
2499          * per second from both tx/rx sources.
2500          */
2501         ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2502         ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2503
2504         return 0;
2505 }
2506
2507 /**
2508  * i40e_get_coalesce - get a netdev's coalesce settings
2509  * @netdev: the netdev to check
2510  * @ec: ethtool coalesce data structure
2511  *
2512  * Gets the coalesce settings for a particular netdev. Note that if user has
2513  * modified per-queue settings, this only guarantees to represent queue 0. See
2514  * __i40e_get_coalesce for more details.
2515  **/
2516 static int i40e_get_coalesce(struct net_device *netdev,
2517                              struct ethtool_coalesce *ec)
2518 {
2519         return __i40e_get_coalesce(netdev, ec, -1);
2520 }
2521
2522 /**
2523  * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2524  * @netdev: netdev structure
2525  * @ec: ethtool's coalesce settings
2526  * @queue: the particular queue to read
2527  *
2528  * Will read a specific queue's coalesce settings
2529  **/
2530 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2531                                        struct ethtool_coalesce *ec)
2532 {
2533         return __i40e_get_coalesce(netdev, ec, queue);
2534 }
2535
2536 /**
2537  * i40e_set_itr_per_queue - set ITR values for specific queue
2538  * @vsi: the VSI to set values for
2539  * @ec: coalesce settings from ethtool
2540  * @queue: the queue to modify
2541  *
2542  * Change the ITR settings for a specific queue.
2543  **/
2544 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2545                                    struct ethtool_coalesce *ec,
2546                                    int queue)
2547 {
2548         struct i40e_ring *rx_ring = vsi->rx_rings[queue];
2549         struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2550         struct i40e_pf *pf = vsi->back;
2551         struct i40e_hw *hw = &pf->hw;
2552         struct i40e_q_vector *q_vector;
2553         u16 intrl;
2554
2555         intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2556
2557         rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
2558         tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2559
2560         if (ec->use_adaptive_rx_coalesce)
2561                 rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2562         else
2563                 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2564
2565         if (ec->use_adaptive_tx_coalesce)
2566                 tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2567         else
2568                 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2569
2570         q_vector = rx_ring->q_vector;
2571         q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2572
2573         q_vector = tx_ring->q_vector;
2574         q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
2575
2576         /* The interrupt handler itself will take care of programming
2577          * the Tx and Rx ITR values based on the values we have entered
2578          * into the q_vector, no need to write the values now.
2579          */
2580
2581         wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
2582         i40e_flush(hw);
2583 }
2584
2585 /**
2586  * __i40e_set_coalesce - set coalesce settings for particular queue
2587  * @netdev: the netdev to change
2588  * @ec: ethtool coalesce settings
2589  * @queue: the queue to change
2590  *
2591  * Sets the coalesce settings for a particular queue.
2592  **/
2593 static int __i40e_set_coalesce(struct net_device *netdev,
2594                                struct ethtool_coalesce *ec,
2595                                int queue)
2596 {
2597         struct i40e_netdev_priv *np = netdev_priv(netdev);
2598         u16 intrl_reg, cur_rx_itr, cur_tx_itr;
2599         struct i40e_vsi *vsi = np->vsi;
2600         struct i40e_pf *pf = vsi->back;
2601         int i;
2602
2603         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
2604                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
2605
2606         if (queue < 0) {
2607                 cur_rx_itr = vsi->rx_rings[0]->itr_setting;
2608                 cur_tx_itr = vsi->tx_rings[0]->itr_setting;
2609         } else if (queue < vsi->num_queue_pairs) {
2610                 cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
2611                 cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
2612         } else {
2613                 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
2614                            vsi->num_queue_pairs - 1);
2615                 return -EINVAL;
2616         }
2617
2618         cur_tx_itr &= ~I40E_ITR_DYNAMIC;
2619         cur_rx_itr &= ~I40E_ITR_DYNAMIC;
2620
2621         /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
2622         if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
2623                 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
2624                 return -EINVAL;
2625         }
2626
2627         if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
2628                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
2629                            INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2630                 return -EINVAL;
2631         }
2632
2633         if (ec->rx_coalesce_usecs != cur_rx_itr &&
2634             ec->use_adaptive_rx_coalesce) {
2635                 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
2636                 return -EINVAL;
2637         }
2638
2639         if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
2640                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
2641                 return -EINVAL;
2642         }
2643
2644         if (ec->tx_coalesce_usecs != cur_tx_itr &&
2645             ec->use_adaptive_tx_coalesce) {
2646                 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
2647                 return -EINVAL;
2648         }
2649
2650         if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
2651                 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
2652                 return -EINVAL;
2653         }
2654
2655         if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2656                 ec->rx_coalesce_usecs = I40E_MIN_ITR;
2657
2658         if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2659                 ec->tx_coalesce_usecs = I40E_MIN_ITR;
2660
2661         intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
2662         vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
2663         if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
2664                 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
2665                            vsi->int_rate_limit);
2666         }
2667
2668         /* rx and tx usecs has per queue value. If user doesn't specify the
2669          * queue, apply to all queues.
2670          */
2671         if (queue < 0) {
2672                 for (i = 0; i < vsi->num_queue_pairs; i++)
2673                         i40e_set_itr_per_queue(vsi, ec, i);
2674         } else {
2675                 i40e_set_itr_per_queue(vsi, ec, queue);
2676         }
2677
2678         return 0;
2679 }
2680
2681 /**
2682  * i40e_set_coalesce - set coalesce settings for every queue on the netdev
2683  * @netdev: the netdev to change
2684  * @ec: ethtool coalesce settings
2685  *
2686  * This will set each queue to the same coalesce settings.
2687  **/
2688 static int i40e_set_coalesce(struct net_device *netdev,
2689                              struct ethtool_coalesce *ec)
2690 {
2691         return __i40e_set_coalesce(netdev, ec, -1);
2692 }
2693
2694 /**
2695  * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
2696  * @netdev: the netdev to change
2697  * @ec: ethtool's coalesce settings
2698  * @queue: the queue to change
2699  *
2700  * Sets the specified queue's coalesce settings.
2701  **/
2702 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
2703                                        struct ethtool_coalesce *ec)
2704 {
2705         return __i40e_set_coalesce(netdev, ec, queue);
2706 }
2707
2708 /**
2709  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
2710  * @pf: pointer to the physical function struct
2711  * @cmd: ethtool rxnfc command
2712  *
2713  * Returns Success if the flow is supported, else Invalid Input.
2714  **/
2715 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
2716 {
2717         struct i40e_hw *hw = &pf->hw;
2718         u8 flow_pctype = 0;
2719         u64 i_set = 0;
2720
2721         cmd->data = 0;
2722
2723         switch (cmd->flow_type) {
2724         case TCP_V4_FLOW:
2725                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
2726                 break;
2727         case UDP_V4_FLOW:
2728                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
2729                 break;
2730         case TCP_V6_FLOW:
2731                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
2732                 break;
2733         case UDP_V6_FLOW:
2734                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
2735                 break;
2736         case SCTP_V4_FLOW:
2737         case AH_ESP_V4_FLOW:
2738         case AH_V4_FLOW:
2739         case ESP_V4_FLOW:
2740         case IPV4_FLOW:
2741         case SCTP_V6_FLOW:
2742         case AH_ESP_V6_FLOW:
2743         case AH_V6_FLOW:
2744         case ESP_V6_FLOW:
2745         case IPV6_FLOW:
2746                 /* Default is src/dest for IP, no matter the L4 hashing */
2747                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
2748                 break;
2749         default:
2750                 return -EINVAL;
2751         }
2752
2753         /* Read flow based hash input set register */
2754         if (flow_pctype) {
2755                 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
2756                                               flow_pctype)) |
2757                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
2758                                                flow_pctype)) << 32);
2759         }
2760
2761         /* Process bits of hash input set */
2762         if (i_set) {
2763                 if (i_set & I40E_L4_SRC_MASK)
2764                         cmd->data |= RXH_L4_B_0_1;
2765                 if (i_set & I40E_L4_DST_MASK)
2766                         cmd->data |= RXH_L4_B_2_3;
2767
2768                 if (cmd->flow_type == TCP_V4_FLOW ||
2769                     cmd->flow_type == UDP_V4_FLOW) {
2770                         if (i_set & I40E_L3_SRC_MASK)
2771                                 cmd->data |= RXH_IP_SRC;
2772                         if (i_set & I40E_L3_DST_MASK)
2773                                 cmd->data |= RXH_IP_DST;
2774                 } else if (cmd->flow_type == TCP_V6_FLOW ||
2775                           cmd->flow_type == UDP_V6_FLOW) {
2776                         if (i_set & I40E_L3_V6_SRC_MASK)
2777                                 cmd->data |= RXH_IP_SRC;
2778                         if (i_set & I40E_L3_V6_DST_MASK)
2779                                 cmd->data |= RXH_IP_DST;
2780                 }
2781         }
2782
2783         return 0;
2784 }
2785
2786 /**
2787  * i40e_check_mask - Check whether a mask field is set
2788  * @mask: the full mask value
2789  * @field: mask of the field to check
2790  *
2791  * If the given mask is fully set, return positive value. If the mask for the
2792  * field is fully unset, return zero. Otherwise return a negative error code.
2793  **/
2794 static int i40e_check_mask(u64 mask, u64 field)
2795 {
2796         u64 value = mask & field;
2797
2798         if (value == field)
2799                 return 1;
2800         else if (!value)
2801                 return 0;
2802         else
2803                 return -1;
2804 }
2805
2806 /**
2807  * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
2808  * @fsp: pointer to rx flow specification
2809  * @data: pointer to userdef data structure for storage
2810  *
2811  * Read the user-defined data and deconstruct the value into a structure. No
2812  * other code should read the user-defined data, so as to ensure that every
2813  * place consistently reads the value correctly.
2814  *
2815  * The user-defined field is a 64bit Big Endian format value, which we
2816  * deconstruct by reading bits or bit fields from it. Single bit flags shall
2817  * be defined starting from the highest bits, while small bit field values
2818  * shall be defined starting from the lowest bits.
2819  *
2820  * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
2821  * and the filter should be rejected. The data structure will always be
2822  * modified even if FLOW_EXT is not set.
2823  *
2824  **/
2825 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
2826                                         struct i40e_rx_flow_userdef *data)
2827 {
2828         u64 value, mask;
2829         int valid;
2830
2831         /* Zero memory first so it's always consistent. */
2832         memset(data, 0, sizeof(*data));
2833
2834         if (!(fsp->flow_type & FLOW_EXT))
2835                 return 0;
2836
2837         value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
2838         mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
2839
2840 #define I40E_USERDEF_FLEX_WORD          GENMASK_ULL(15, 0)
2841 #define I40E_USERDEF_FLEX_OFFSET        GENMASK_ULL(31, 16)
2842 #define I40E_USERDEF_FLEX_FILTER        GENMASK_ULL(31, 0)
2843
2844         valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
2845         if (valid < 0) {
2846                 return -EINVAL;
2847         } else if (valid) {
2848                 data->flex_word = value & I40E_USERDEF_FLEX_WORD;
2849                 data->flex_offset =
2850                         (value & I40E_USERDEF_FLEX_OFFSET) >> 16;
2851                 data->flex_filter = true;
2852         }
2853
2854         return 0;
2855 }
2856
2857 /**
2858  * i40e_fill_rx_flow_user_data - Fill in user-defined data field
2859  * @fsp: pointer to rx_flow specification
2860  * @data: pointer to return userdef data
2861  *
2862  * Reads the userdef data structure and properly fills in the user defined
2863  * fields of the rx_flow_spec.
2864  **/
2865 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
2866                                         struct i40e_rx_flow_userdef *data)
2867 {
2868         u64 value = 0, mask = 0;
2869
2870         if (data->flex_filter) {
2871                 value |= data->flex_word;
2872                 value |= (u64)data->flex_offset << 16;
2873                 mask |= I40E_USERDEF_FLEX_FILTER;
2874         }
2875
2876         if (value || mask)
2877                 fsp->flow_type |= FLOW_EXT;
2878
2879         *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
2880         *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
2881 }
2882
2883 /**
2884  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
2885  * @pf: Pointer to the physical function struct
2886  * @cmd: The command to get or set Rx flow classification rules
2887  * @rule_locs: Array of used rule locations
2888  *
2889  * This function populates both the total and actual rule count of
2890  * the ethtool flow classification command
2891  *
2892  * Returns 0 on success or -EMSGSIZE if entry not found
2893  **/
2894 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
2895                                      struct ethtool_rxnfc *cmd,
2896                                      u32 *rule_locs)
2897 {
2898         struct i40e_fdir_filter *rule;
2899         struct hlist_node *node2;
2900         int cnt = 0;
2901
2902         /* report total rule count */
2903         cmd->data = i40e_get_fd_cnt_all(pf);
2904
2905         hlist_for_each_entry_safe(rule, node2,
2906                                   &pf->fdir_filter_list, fdir_node) {
2907                 if (cnt == cmd->rule_cnt)
2908                         return -EMSGSIZE;
2909
2910                 rule_locs[cnt] = rule->fd_id;
2911                 cnt++;
2912         }
2913
2914         cmd->rule_cnt = cnt;
2915
2916         return 0;
2917 }
2918
2919 /**
2920  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
2921  * @pf: Pointer to the physical function struct
2922  * @cmd: The command to get or set Rx flow classification rules
2923  *
2924  * This function looks up a filter based on the Rx flow classification
2925  * command and fills the flow spec info for it if found
2926  *
2927  * Returns 0 on success or -EINVAL if filter not found
2928  **/
2929 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
2930                                        struct ethtool_rxnfc *cmd)
2931 {
2932         struct ethtool_rx_flow_spec *fsp =
2933                         (struct ethtool_rx_flow_spec *)&cmd->fs;
2934         struct i40e_rx_flow_userdef userdef = {0};
2935         struct i40e_fdir_filter *rule = NULL;
2936         struct hlist_node *node2;
2937         u64 input_set;
2938         u16 index;
2939
2940         hlist_for_each_entry_safe(rule, node2,
2941                                   &pf->fdir_filter_list, fdir_node) {
2942                 if (fsp->location <= rule->fd_id)
2943                         break;
2944         }
2945
2946         if (!rule || fsp->location != rule->fd_id)
2947                 return -EINVAL;
2948
2949         fsp->flow_type = rule->flow_type;
2950         if (fsp->flow_type == IP_USER_FLOW) {
2951                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
2952                 fsp->h_u.usr_ip4_spec.proto = 0;
2953                 fsp->m_u.usr_ip4_spec.proto = 0;
2954         }
2955
2956         /* Reverse the src and dest notion, since the HW views them from
2957          * Tx perspective where as the user expects it from Rx filter view.
2958          */
2959         fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
2960         fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
2961         fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
2962         fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
2963
2964         switch (rule->flow_type) {
2965         case SCTP_V4_FLOW:
2966                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
2967                 break;
2968         case TCP_V4_FLOW:
2969                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
2970                 break;
2971         case UDP_V4_FLOW:
2972                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
2973                 break;
2974         case IP_USER_FLOW:
2975                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
2976                 break;
2977         default:
2978                 /* If we have stored a filter with a flow type not listed here
2979                  * it is almost certainly a driver bug. WARN(), and then
2980                  * assign the input_set as if all fields are enabled to avoid
2981                  * reading unassigned memory.
2982                  */
2983                 WARN(1, "Missing input set index for flow_type %d\n",
2984                      rule->flow_type);
2985                 input_set = 0xFFFFFFFFFFFFFFFFULL;
2986                 goto no_input_set;
2987         }
2988
2989         input_set = i40e_read_fd_input_set(pf, index);
2990
2991 no_input_set:
2992         if (input_set & I40E_L3_SRC_MASK)
2993                 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
2994
2995         if (input_set & I40E_L3_DST_MASK)
2996                 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
2997
2998         if (input_set & I40E_L4_SRC_MASK)
2999                 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
3000
3001         if (input_set & I40E_L4_DST_MASK)
3002                 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
3003
3004         if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
3005                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
3006         else
3007                 fsp->ring_cookie = rule->q_index;
3008
3009         if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
3010                 struct i40e_vsi *vsi;
3011
3012                 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
3013                 if (vsi && vsi->type == I40E_VSI_SRIOV) {
3014                         /* VFs are zero-indexed by the driver, but ethtool
3015                          * expects them to be one-indexed, so add one here
3016                          */
3017                         u64 ring_vf = vsi->vf_id + 1;
3018
3019                         ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
3020                         fsp->ring_cookie |= ring_vf;
3021                 }
3022         }
3023
3024         if (rule->flex_filter) {
3025                 userdef.flex_filter = true;
3026                 userdef.flex_word = be16_to_cpu(rule->flex_word);
3027                 userdef.flex_offset = rule->flex_offset;
3028         }
3029
3030         i40e_fill_rx_flow_user_data(fsp, &userdef);
3031
3032         return 0;
3033 }
3034
3035 /**
3036  * i40e_get_rxnfc - command to get RX flow classification rules
3037  * @netdev: network interface device structure
3038  * @cmd: ethtool rxnfc command
3039  * @rule_locs: pointer to store rule data
3040  *
3041  * Returns Success if the command is supported.
3042  **/
3043 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
3044                           u32 *rule_locs)
3045 {
3046         struct i40e_netdev_priv *np = netdev_priv(netdev);
3047         struct i40e_vsi *vsi = np->vsi;
3048         struct i40e_pf *pf = vsi->back;
3049         int ret = -EOPNOTSUPP;
3050
3051         switch (cmd->cmd) {
3052         case ETHTOOL_GRXRINGS:
3053                 cmd->data = vsi->rss_size;
3054                 ret = 0;
3055                 break;
3056         case ETHTOOL_GRXFH:
3057                 ret = i40e_get_rss_hash_opts(pf, cmd);
3058                 break;
3059         case ETHTOOL_GRXCLSRLCNT:
3060                 cmd->rule_cnt = pf->fdir_pf_active_filters;
3061                 /* report total rule count */
3062                 cmd->data = i40e_get_fd_cnt_all(pf);
3063                 ret = 0;
3064                 break;
3065         case ETHTOOL_GRXCLSRULE:
3066                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
3067                 break;
3068         case ETHTOOL_GRXCLSRLALL:
3069                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
3070                 break;
3071         default:
3072                 break;
3073         }
3074
3075         return ret;
3076 }
3077
3078 /**
3079  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
3080  * @nfc: pointer to user request
3081  * @i_setc: bits currently set
3082  *
3083  * Returns value of bits to be set per user request
3084  **/
3085 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
3086 {
3087         u64 i_set = i_setc;
3088         u64 src_l3 = 0, dst_l3 = 0;
3089
3090         if (nfc->data & RXH_L4_B_0_1)
3091                 i_set |= I40E_L4_SRC_MASK;
3092         else
3093                 i_set &= ~I40E_L4_SRC_MASK;
3094         if (nfc->data & RXH_L4_B_2_3)
3095                 i_set |= I40E_L4_DST_MASK;
3096         else
3097                 i_set &= ~I40E_L4_DST_MASK;
3098
3099         if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
3100                 src_l3 = I40E_L3_V6_SRC_MASK;
3101                 dst_l3 = I40E_L3_V6_DST_MASK;
3102         } else if (nfc->flow_type == TCP_V4_FLOW ||
3103                   nfc->flow_type == UDP_V4_FLOW) {
3104                 src_l3 = I40E_L3_SRC_MASK;
3105                 dst_l3 = I40E_L3_DST_MASK;
3106         } else {
3107                 /* Any other flow type are not supported here */
3108                 return i_set;
3109         }
3110
3111         if (nfc->data & RXH_IP_SRC)
3112                 i_set |= src_l3;
3113         else
3114                 i_set &= ~src_l3;
3115         if (nfc->data & RXH_IP_DST)
3116                 i_set |= dst_l3;
3117         else
3118                 i_set &= ~dst_l3;
3119
3120         return i_set;
3121 }
3122
3123 /**
3124  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
3125  * @pf: pointer to the physical function struct
3126  * @nfc: ethtool rxnfc command
3127  *
3128  * Returns Success if the flow input set is supported.
3129  **/
3130 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
3131 {
3132         struct i40e_hw *hw = &pf->hw;
3133         u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
3134                    ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3135         u8 flow_pctype = 0;
3136         u64 i_set, i_setc;
3137
3138         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3139                 dev_err(&pf->pdev->dev,
3140                         "Change of RSS hash input set is not supported when MFP mode is enabled\n");
3141                 return -EOPNOTSUPP;
3142         }
3143
3144         /* RSS does not support anything other than hashing
3145          * to queues on src and dst IPs and ports
3146          */
3147         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
3148                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
3149                 return -EINVAL;
3150
3151         switch (nfc->flow_type) {
3152         case TCP_V4_FLOW:
3153                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3154                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3155                         hena |=
3156                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3157                 break;
3158         case TCP_V6_FLOW:
3159                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3160                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3161                         hena |=
3162                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3163                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3164                         hena |=
3165                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
3166                 break;
3167         case UDP_V4_FLOW:
3168                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3169                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3170                         hena |=
3171                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
3172                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
3173
3174                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3175                 break;
3176         case UDP_V6_FLOW:
3177                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3178                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3179                         hena |=
3180                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
3181                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
3182
3183                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3184                 break;
3185         case AH_ESP_V4_FLOW:
3186         case AH_V4_FLOW:
3187         case ESP_V4_FLOW:
3188         case SCTP_V4_FLOW:
3189                 if ((nfc->data & RXH_L4_B_0_1) ||
3190                     (nfc->data & RXH_L4_B_2_3))
3191                         return -EINVAL;
3192                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3193                 break;
3194         case AH_ESP_V6_FLOW:
3195         case AH_V6_FLOW:
3196         case ESP_V6_FLOW:
3197         case SCTP_V6_FLOW:
3198                 if ((nfc->data & RXH_L4_B_0_1) ||
3199                     (nfc->data & RXH_L4_B_2_3))
3200                         return -EINVAL;
3201                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3202                 break;
3203         case IPV4_FLOW:
3204                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
3205                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3206                 break;
3207         case IPV6_FLOW:
3208                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
3209                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3210                 break;
3211         default:
3212                 return -EINVAL;
3213         }
3214
3215         if (flow_pctype) {
3216                 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3217                                                flow_pctype)) |
3218                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3219                                                flow_pctype)) << 32);
3220                 i_set = i40e_get_rss_hash_bits(nfc, i_setc);
3221                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
3222                                   (u32)i_set);
3223                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
3224                                   (u32)(i_set >> 32));
3225                 hena |= BIT_ULL(flow_pctype);
3226         }
3227
3228         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
3229         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
3230         i40e_flush(hw);
3231
3232         return 0;
3233 }
3234
3235 /**
3236  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
3237  * @vsi: Pointer to the targeted VSI
3238  * @input: The filter to update or NULL to indicate deletion
3239  * @sw_idx: Software index to the filter
3240  * @cmd: The command to get or set Rx flow classification rules
3241  *
3242  * This function updates (or deletes) a Flow Director entry from
3243  * the hlist of the corresponding PF
3244  *
3245  * Returns 0 on success
3246  **/
3247 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
3248                                           struct i40e_fdir_filter *input,
3249                                           u16 sw_idx,
3250                                           struct ethtool_rxnfc *cmd)
3251 {
3252         struct i40e_fdir_filter *rule, *parent;
3253         struct i40e_pf *pf = vsi->back;
3254         struct hlist_node *node2;
3255         int err = -EINVAL;
3256
3257         parent = NULL;
3258         rule = NULL;
3259
3260         hlist_for_each_entry_safe(rule, node2,
3261                                   &pf->fdir_filter_list, fdir_node) {
3262                 /* hash found, or no matching entry */
3263                 if (rule->fd_id >= sw_idx)
3264                         break;
3265                 parent = rule;
3266         }
3267
3268         /* if there is an old rule occupying our place remove it */
3269         if (rule && (rule->fd_id == sw_idx)) {
3270                 /* Remove this rule, since we're either deleting it, or
3271                  * replacing it.
3272                  */
3273                 err = i40e_add_del_fdir(vsi, rule, false);
3274                 hlist_del(&rule->fdir_node);
3275                 kfree(rule);
3276                 pf->fdir_pf_active_filters--;
3277         }
3278
3279         /* If we weren't given an input, this is a delete, so just return the
3280          * error code indicating if there was an entry at the requested slot
3281          */
3282         if (!input)
3283                 return err;
3284
3285         /* Otherwise, install the new rule as requested */
3286         INIT_HLIST_NODE(&input->fdir_node);
3287
3288         /* add filter to the list */
3289         if (parent)
3290                 hlist_add_behind(&input->fdir_node, &parent->fdir_node);
3291         else
3292                 hlist_add_head(&input->fdir_node,
3293                                &pf->fdir_filter_list);
3294
3295         /* update counts */
3296         pf->fdir_pf_active_filters++;
3297
3298         return 0;
3299 }
3300
3301 /**
3302  * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
3303  * @pf: pointer to PF structure
3304  *
3305  * This function searches the list of filters and determines which FLX_PIT
3306  * entries are still required. It will prune any entries which are no longer
3307  * in use after the deletion.
3308  **/
3309 static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
3310 {
3311         struct i40e_flex_pit *entry, *tmp;
3312         struct i40e_fdir_filter *rule;
3313
3314         /* First, we'll check the l3 table */
3315         list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
3316                 bool found = false;
3317
3318                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3319                         if (rule->flow_type != IP_USER_FLOW)
3320                                 continue;
3321                         if (rule->flex_filter &&
3322                             rule->flex_offset == entry->src_offset) {
3323                                 found = true;
3324                                 break;
3325                         }
3326                 }
3327
3328                 /* If we didn't find the filter, then we can prune this entry
3329                  * from the list.
3330                  */
3331                 if (!found) {
3332                         list_del(&entry->list);
3333                         kfree(entry);
3334                 }
3335         }
3336
3337         /* Followed by the L4 table */
3338         list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
3339                 bool found = false;
3340
3341                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3342                         /* Skip this filter if it's L3, since we already
3343                          * checked those in the above loop
3344                          */
3345                         if (rule->flow_type == IP_USER_FLOW)
3346                                 continue;
3347                         if (rule->flex_filter &&
3348                             rule->flex_offset == entry->src_offset) {
3349                                 found = true;
3350                                 break;
3351                         }
3352                 }
3353
3354                 /* If we didn't find the filter, then we can prune this entry
3355                  * from the list.
3356                  */
3357                 if (!found) {
3358                         list_del(&entry->list);
3359                         kfree(entry);
3360                 }
3361         }
3362 }
3363
3364 /**
3365  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
3366  * @vsi: Pointer to the targeted VSI
3367  * @cmd: The command to get or set Rx flow classification rules
3368  *
3369  * The function removes a Flow Director filter entry from the
3370  * hlist of the corresponding PF
3371  *
3372  * Returns 0 on success
3373  */
3374 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
3375                                struct ethtool_rxnfc *cmd)
3376 {
3377         struct ethtool_rx_flow_spec *fsp =
3378                 (struct ethtool_rx_flow_spec *)&cmd->fs;
3379         struct i40e_pf *pf = vsi->back;
3380         int ret = 0;
3381
3382         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3383             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3384                 return -EBUSY;
3385
3386         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3387                 return -EBUSY;
3388
3389         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
3390
3391         i40e_prune_flex_pit_list(pf);
3392
3393         i40e_fdir_check_and_reenable(pf);
3394         return ret;
3395 }
3396
3397 /**
3398  * i40e_unused_pit_index - Find an unused PIT index for given list
3399  * @pf: the PF data structure
3400  *
3401  * Find the first unused flexible PIT index entry. We search both the L3 and
3402  * L4 flexible PIT lists so that the returned index is unique and unused by
3403  * either currently programmed L3 or L4 filters. We use a bit field as storage
3404  * to track which indexes are already used.
3405  **/
3406 static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3407 {
3408         unsigned long available_index = 0xFF;
3409         struct i40e_flex_pit *entry;
3410
3411         /* We need to make sure that the new index isn't in use by either L3
3412          * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3413          * L4 to use the same index.
3414          */
3415
3416         list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3417                 clear_bit(entry->pit_index, &available_index);
3418
3419         list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3420                 clear_bit(entry->pit_index, &available_index);
3421
3422         return find_first_bit(&available_index, 8);
3423 }
3424
3425 /**
3426  * i40e_find_flex_offset - Find an existing flex src_offset
3427  * @flex_pit_list: L3 or L4 flex PIT list
3428  * @src_offset: new src_offset to find
3429  *
3430  * Searches the flex_pit_list for an existing offset. If no offset is
3431  * currently programmed, then this will return an ERR_PTR if there is no space
3432  * to add a new offset, otherwise it returns NULL.
3433  **/
3434 static
3435 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3436                                             u16 src_offset)
3437 {
3438         struct i40e_flex_pit *entry;
3439         int size = 0;
3440
3441         /* Search for the src_offset first. If we find a matching entry
3442          * already programmed, we can simply re-use it.
3443          */
3444         list_for_each_entry(entry, flex_pit_list, list) {
3445                 size++;
3446                 if (entry->src_offset == src_offset)
3447                         return entry;
3448         }
3449
3450         /* If we haven't found an entry yet, then the provided src offset has
3451          * not yet been programmed. We will program the src offset later on,
3452          * but we need to indicate whether there is enough space to do so
3453          * here. We'll make use of ERR_PTR for this purpose.
3454          */
3455         if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3456                 return ERR_PTR(-ENOSPC);
3457
3458         return NULL;
3459 }
3460
3461 /**
3462  * i40e_add_flex_offset - Add src_offset to flex PIT table list
3463  * @flex_pit_list: L3 or L4 flex PIT list
3464  * @src_offset: new src_offset to add
3465  * @pit_index: the PIT index to program
3466  *
3467  * This function programs the new src_offset to the list. It is expected that
3468  * i40e_find_flex_offset has already been tried and returned NULL, indicating
3469  * that this offset is not programmed, and that the list has enough space to
3470  * store another offset.
3471  *
3472  * Returns 0 on success, and negative value on error.
3473  **/
3474 static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3475                                 u16 src_offset,
3476                                 u8 pit_index)
3477 {
3478         struct i40e_flex_pit *new_pit, *entry;
3479
3480         new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
3481         if (!new_pit)
3482                 return -ENOMEM;
3483
3484         new_pit->src_offset = src_offset;
3485         new_pit->pit_index = pit_index;
3486
3487         /* We need to insert this item such that the list is sorted by
3488          * src_offset in ascending order.
3489          */
3490         list_for_each_entry(entry, flex_pit_list, list) {
3491                 if (new_pit->src_offset < entry->src_offset) {
3492                         list_add_tail(&new_pit->list, &entry->list);
3493                         return 0;
3494                 }
3495
3496                 /* If we found an entry with our offset already programmed we
3497                  * can simply return here, after freeing the memory. However,
3498                  * if the pit_index does not match we need to report an error.
3499                  */
3500                 if (new_pit->src_offset == entry->src_offset) {
3501                         int err = 0;
3502
3503                         /* If the PIT index is not the same we can't re-use
3504                          * the entry, so we must report an error.
3505                          */
3506                         if (new_pit->pit_index != entry->pit_index)
3507                                 err = -EINVAL;
3508
3509                         kfree(new_pit);
3510                         return err;
3511                 }
3512         }
3513
3514         /* If we reached here, then we haven't yet added the item. This means
3515          * that we should add the item at the end of the list.
3516          */
3517         list_add_tail(&new_pit->list, flex_pit_list);
3518         return 0;
3519 }
3520
3521 /**
3522  * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
3523  * @pf: Pointer to the PF structure
3524  * @flex_pit_list: list of flexible src offsets in use
3525  * @flex_pit_start: index to first entry for this section of the table
3526  *
3527  * In order to handle flexible data, the hardware uses a table of values
3528  * called the FLX_PIT table. This table is used to indicate which sections of
3529  * the input correspond to what PIT index values. Unfortunately, hardware is
3530  * very restrictive about programming this table. Entries must be ordered by
3531  * src_offset in ascending order, without duplicates. Additionally, unused
3532  * entries must be set to the unused index value, and must have valid size and
3533  * length according to the src_offset ordering.
3534  *
3535  * This function will reprogram the FLX_PIT register from a book-keeping
3536  * structure that we guarantee is already ordered correctly, and has no more
3537  * than 3 entries.
3538  *
3539  * To make things easier, we only support flexible values of one word length,
3540  * rather than allowing variable length flexible values.
3541  **/
3542 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
3543                                       struct list_head *flex_pit_list,
3544                                       int flex_pit_start)
3545 {
3546         struct i40e_flex_pit *entry = NULL;
3547         u16 last_offset = 0;
3548         int i = 0, j = 0;
3549
3550         /* First, loop over the list of flex PIT entries, and reprogram the
3551          * registers.
3552          */
3553         list_for_each_entry(entry, flex_pit_list, list) {
3554                 /* We have to be careful when programming values for the
3555                  * largest SRC_OFFSET value. It is possible that adding
3556                  * additional empty values at the end would overflow the space
3557                  * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
3558                  * we check here and add the empty values prior to adding the
3559                  * largest value.
3560                  *
3561                  * To determine this, we will use a loop from i+1 to 3, which
3562                  * will determine whether the unused entries would have valid
3563                  * SRC_OFFSET. Note that there cannot be extra entries past
3564                  * this value, because the only valid values would have been
3565                  * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
3566                  * have been added to the list in the first place.
3567                  */
3568                 for (j = i + 1; j < 3; j++) {
3569                         u16 offset = entry->src_offset + j;
3570                         int index = flex_pit_start + i;
3571                         u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3572                                                        1,
3573                                                        offset - 3);
3574
3575                         if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
3576                                 i40e_write_rx_ctl(&pf->hw,
3577                                                   I40E_PRTQF_FLX_PIT(index),
3578                                                   value);
3579                                 i++;
3580                         }
3581                 }
3582
3583                 /* Now, we can program the actual value into the table */
3584                 i40e_write_rx_ctl(&pf->hw,
3585                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3586                                   I40E_FLEX_PREP_VAL(entry->pit_index + 50,
3587                                                      1,
3588                                                      entry->src_offset));
3589                 i++;
3590         }
3591
3592         /* In order to program the last entries in the table, we need to
3593          * determine the valid offset. If the list is empty, we'll just start
3594          * with 0. Otherwise, we'll start with the last item offset and add 1.
3595          * This ensures that all entries have valid sizes. If we don't do this
3596          * correctly, the hardware will disable flexible field parsing.
3597          */
3598         if (!list_empty(flex_pit_list))
3599                 last_offset = list_prev_entry(entry, list)->src_offset + 1;
3600
3601         for (; i < 3; i++, last_offset++) {
3602                 i40e_write_rx_ctl(&pf->hw,
3603                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3604                                   I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3605                                                      1,
3606                                                      last_offset));
3607         }
3608 }
3609
3610 /**
3611  * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
3612  * @pf: pointer to the PF structure
3613  *
3614  * This function reprograms both the L3 and L4 FLX_PIT tables. See the
3615  * internal helper function for implementation details.
3616  **/
3617 static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
3618 {
3619         __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
3620                                   I40E_FLEX_PIT_IDX_START_L3);
3621
3622         __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
3623                                   I40E_FLEX_PIT_IDX_START_L4);
3624
3625         /* We also need to program the L3 and L4 GLQF ORT register */
3626         i40e_write_rx_ctl(&pf->hw,
3627                           I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
3628                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
3629                                             3, 1));
3630
3631         i40e_write_rx_ctl(&pf->hw,
3632                           I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
3633                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
3634                                             3, 1));
3635 }
3636
3637 /**
3638  * i40e_flow_str - Converts a flow_type into a human readable string
3639  * @fsp: the flow specification
3640  *
3641  * Currently only flow types we support are included here, and the string
3642  * value attempts to match what ethtool would use to configure this flow type.
3643  **/
3644 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
3645 {
3646         switch (fsp->flow_type & ~FLOW_EXT) {
3647         case TCP_V4_FLOW:
3648                 return "tcp4";
3649         case UDP_V4_FLOW:
3650                 return "udp4";
3651         case SCTP_V4_FLOW:
3652                 return "sctp4";
3653         case IP_USER_FLOW:
3654                 return "ip4";
3655         default:
3656                 return "unknown";
3657         }
3658 }
3659
3660 /**
3661  * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
3662  * @pit_index: PIT index to convert
3663  *
3664  * Returns the mask for a given PIT index. Will return 0 if the pit_index is
3665  * of range.
3666  **/
3667 static u64 i40e_pit_index_to_mask(int pit_index)
3668 {
3669         switch (pit_index) {
3670         case 0:
3671                 return I40E_FLEX_50_MASK;
3672         case 1:
3673                 return I40E_FLEX_51_MASK;
3674         case 2:
3675                 return I40E_FLEX_52_MASK;
3676         case 3:
3677                 return I40E_FLEX_53_MASK;
3678         case 4:
3679                 return I40E_FLEX_54_MASK;
3680         case 5:
3681                 return I40E_FLEX_55_MASK;
3682         case 6:
3683                 return I40E_FLEX_56_MASK;
3684         case 7:
3685                 return I40E_FLEX_57_MASK;
3686         default:
3687                 return 0;
3688         }
3689 }
3690
3691 /**
3692  * i40e_print_input_set - Show changes between two input sets
3693  * @vsi: the vsi being configured
3694  * @old: the old input set
3695  * @new: the new input set
3696  *
3697  * Print the difference between old and new input sets by showing which series
3698  * of words are toggled on or off. Only displays the bits we actually support
3699  * changing.
3700  **/
3701 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
3702 {
3703         struct i40e_pf *pf = vsi->back;
3704         bool old_value, new_value;
3705         int i;
3706
3707         old_value = !!(old & I40E_L3_SRC_MASK);
3708         new_value = !!(new & I40E_L3_SRC_MASK);
3709         if (old_value != new_value)
3710                 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
3711                            old_value ? "ON" : "OFF",
3712                            new_value ? "ON" : "OFF");
3713
3714         old_value = !!(old & I40E_L3_DST_MASK);
3715         new_value = !!(new & I40E_L3_DST_MASK);
3716         if (old_value != new_value)
3717                 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
3718                            old_value ? "ON" : "OFF",
3719                            new_value ? "ON" : "OFF");
3720
3721         old_value = !!(old & I40E_L4_SRC_MASK);
3722         new_value = !!(new & I40E_L4_SRC_MASK);
3723         if (old_value != new_value)
3724                 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
3725                            old_value ? "ON" : "OFF",
3726                            new_value ? "ON" : "OFF");
3727
3728         old_value = !!(old & I40E_L4_DST_MASK);
3729         new_value = !!(new & I40E_L4_DST_MASK);
3730         if (old_value != new_value)
3731                 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
3732                            old_value ? "ON" : "OFF",
3733                            new_value ? "ON" : "OFF");
3734
3735         old_value = !!(old & I40E_VERIFY_TAG_MASK);
3736         new_value = !!(new & I40E_VERIFY_TAG_MASK);
3737         if (old_value != new_value)
3738                 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
3739                            old_value ? "ON" : "OFF",
3740                            new_value ? "ON" : "OFF");
3741
3742         /* Show change of flexible filter entries */
3743         for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
3744                 u64 flex_mask = i40e_pit_index_to_mask(i);
3745
3746                 old_value = !!(old & flex_mask);
3747                 new_value = !!(new & flex_mask);
3748                 if (old_value != new_value)
3749                         netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
3750                                    i,
3751                                    old_value ? "ON" : "OFF",
3752                                    new_value ? "ON" : "OFF");
3753         }
3754
3755         netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
3756                    old);
3757         netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
3758                    new);
3759 }
3760
3761 /**
3762  * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
3763  * @vsi: pointer to the targeted VSI
3764  * @fsp: pointer to Rx flow specification
3765  * @userdef: userdefined data from flow specification
3766  *
3767  * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
3768  * for partial matches exists with a few limitations. First, hardware only
3769  * supports masking by word boundary (2 bytes) and not per individual bit.
3770  * Second, hardware is limited to using one mask for a flow type and cannot
3771  * use a separate mask for each filter.
3772  *
3773  * To support these limitations, if we already have a configured filter for
3774  * the specified type, this function enforces that new filters of the type
3775  * match the configured input set. Otherwise, if we do not have a filter of
3776  * the specified type, we allow the input set to be updated to match the
3777  * desired filter.
3778  *
3779  * To help ensure that administrators understand why filters weren't displayed
3780  * as supported, we print a diagnostic message displaying how the input set
3781  * would change and warning to delete the preexisting filters if required.
3782  *
3783  * Returns 0 on successful input set match, and a negative return code on
3784  * failure.
3785  **/
3786 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
3787                                      struct ethtool_rx_flow_spec *fsp,
3788                                      struct i40e_rx_flow_userdef *userdef)
3789 {
3790         struct i40e_pf *pf = vsi->back;
3791         struct ethtool_tcpip4_spec *tcp_ip4_spec;
3792         struct ethtool_usrip4_spec *usr_ip4_spec;
3793         u64 current_mask, new_mask;
3794         bool new_flex_offset = false;
3795         bool flex_l3 = false;
3796         u16 *fdir_filter_count;
3797         u16 index, src_offset = 0;
3798         u8 pit_index = 0;
3799         int err;
3800
3801         switch (fsp->flow_type & ~FLOW_EXT) {
3802         case SCTP_V4_FLOW:
3803                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3804                 fdir_filter_count = &pf->fd_sctp4_filter_cnt;
3805                 break;
3806         case TCP_V4_FLOW:
3807                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3808                 fdir_filter_count = &pf->fd_tcp4_filter_cnt;
3809                 break;
3810         case UDP_V4_FLOW:
3811                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3812                 fdir_filter_count = &pf->fd_udp4_filter_cnt;
3813                 break;
3814         case IP_USER_FLOW:
3815                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3816                 fdir_filter_count = &pf->fd_ip4_filter_cnt;
3817                 flex_l3 = true;
3818                 break;
3819         default:
3820                 return -EOPNOTSUPP;
3821         }
3822
3823         /* Read the current input set from register memory. */
3824         current_mask = i40e_read_fd_input_set(pf, index);
3825         new_mask = current_mask;
3826
3827         /* Determine, if any, the required changes to the input set in order
3828          * to support the provided mask.
3829          *
3830          * Hardware only supports masking at word (2 byte) granularity and does
3831          * not support full bitwise masking. This implementation simplifies
3832          * even further and only supports fully enabled or fully disabled
3833          * masks for each field, even though we could split the ip4src and
3834          * ip4dst fields.
3835          */
3836         switch (fsp->flow_type & ~FLOW_EXT) {
3837         case SCTP_V4_FLOW:
3838                 new_mask &= ~I40E_VERIFY_TAG_MASK;
3839                 /* Fall through */
3840         case TCP_V4_FLOW:
3841         case UDP_V4_FLOW:
3842                 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
3843
3844                 /* IPv4 source address */
3845                 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
3846                         new_mask |= I40E_L3_SRC_MASK;
3847                 else if (!tcp_ip4_spec->ip4src)
3848                         new_mask &= ~I40E_L3_SRC_MASK;
3849                 else
3850                         return -EOPNOTSUPP;
3851
3852                 /* IPv4 destination address */
3853                 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
3854                         new_mask |= I40E_L3_DST_MASK;
3855                 else if (!tcp_ip4_spec->ip4dst)
3856                         new_mask &= ~I40E_L3_DST_MASK;
3857                 else
3858                         return -EOPNOTSUPP;
3859
3860                 /* L4 source port */
3861                 if (tcp_ip4_spec->psrc == htons(0xFFFF))
3862                         new_mask |= I40E_L4_SRC_MASK;
3863                 else if (!tcp_ip4_spec->psrc)
3864                         new_mask &= ~I40E_L4_SRC_MASK;
3865                 else
3866                         return -EOPNOTSUPP;
3867
3868                 /* L4 destination port */
3869                 if (tcp_ip4_spec->pdst == htons(0xFFFF))
3870                         new_mask |= I40E_L4_DST_MASK;
3871                 else if (!tcp_ip4_spec->pdst)
3872                         new_mask &= ~I40E_L4_DST_MASK;
3873                 else
3874                         return -EOPNOTSUPP;
3875
3876                 /* Filtering on Type of Service is not supported. */
3877                 if (tcp_ip4_spec->tos)
3878                         return -EOPNOTSUPP;
3879
3880                 break;
3881         case IP_USER_FLOW:
3882                 usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
3883
3884                 /* IPv4 source address */
3885                 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
3886                         new_mask |= I40E_L3_SRC_MASK;
3887                 else if (!usr_ip4_spec->ip4src)
3888                         new_mask &= ~I40E_L3_SRC_MASK;
3889                 else
3890                         return -EOPNOTSUPP;
3891
3892                 /* IPv4 destination address */
3893                 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
3894                         new_mask |= I40E_L3_DST_MASK;
3895                 else if (!usr_ip4_spec->ip4dst)
3896                         new_mask &= ~I40E_L3_DST_MASK;
3897                 else
3898                         return -EOPNOTSUPP;
3899
3900                 /* First 4 bytes of L4 header */
3901                 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
3902                         new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
3903                 else if (!usr_ip4_spec->l4_4_bytes)
3904                         new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
3905                 else
3906                         return -EOPNOTSUPP;
3907
3908                 /* Filtering on Type of Service is not supported. */
3909                 if (usr_ip4_spec->tos)
3910                         return -EOPNOTSUPP;
3911
3912                 /* Filtering on IP version is not supported */
3913                 if (usr_ip4_spec->ip_ver)
3914                         return -EINVAL;
3915
3916                 /* Filtering on L4 protocol is not supported */
3917                 if (usr_ip4_spec->proto)
3918                         return -EINVAL;
3919
3920                 break;
3921         default:
3922                 return -EOPNOTSUPP;
3923         }
3924
3925         /* First, clear all flexible filter entries */
3926         new_mask &= ~I40E_FLEX_INPUT_MASK;
3927
3928         /* If we have a flexible filter, try to add this offset to the correct
3929          * flexible filter PIT list. Once finished, we can update the mask.
3930          * If the src_offset changed, we will get a new mask value which will
3931          * trigger an input set change.
3932          */
3933         if (userdef->flex_filter) {
3934                 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
3935
3936                 /* Flexible offset must be even, since the flexible payload
3937                  * must be aligned on 2-byte boundary.
3938                  */
3939                 if (userdef->flex_offset & 0x1) {
3940                         dev_warn(&pf->pdev->dev,
3941                                  "Flexible data offset must be 2-byte aligned\n");
3942                         return -EINVAL;
3943                 }
3944
3945                 src_offset = userdef->flex_offset >> 1;
3946
3947                 /* FLX_PIT source offset value is only so large */
3948                 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
3949                         dev_warn(&pf->pdev->dev,
3950                                  "Flexible data must reside within first 64 bytes of the packet payload\n");
3951                         return -EINVAL;
3952                 }
3953
3954                 /* See if this offset has already been programmed. If we get
3955                  * an ERR_PTR, then the filter is not safe to add. Otherwise,
3956                  * if we get a NULL pointer, this means we will need to add
3957                  * the offset.
3958                  */
3959                 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
3960                                                  src_offset);
3961                 if (IS_ERR(flex_pit))
3962                         return PTR_ERR(flex_pit);
3963
3964                 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
3965                  * packet types, and thus we need to program both L3 and L4
3966                  * flexible values. These must have identical flexible index,
3967                  * as otherwise we can't correctly program the input set. So
3968                  * we'll find both an L3 and L4 index and make sure they are
3969                  * the same.
3970                  */
3971                 if (flex_l3) {
3972                         l3_flex_pit =
3973                                 i40e_find_flex_offset(&pf->l3_flex_pit_list,
3974                                                       src_offset);
3975                         if (IS_ERR(l3_flex_pit))
3976                                 return PTR_ERR(l3_flex_pit);
3977
3978                         if (flex_pit) {
3979                                 /* If we already had a matching L4 entry, we
3980                                  * need to make sure that the L3 entry we
3981                                  * obtained uses the same index.
3982                                  */
3983                                 if (l3_flex_pit) {
3984                                         if (l3_flex_pit->pit_index !=
3985                                             flex_pit->pit_index) {
3986                                                 return -EINVAL;
3987                                         }
3988                                 } else {
3989                                         new_flex_offset = true;
3990                                 }
3991                         } else {
3992                                 flex_pit = l3_flex_pit;
3993                         }
3994                 }
3995
3996                 /* If we didn't find an existing flex offset, we need to
3997                  * program a new one. However, we don't immediately program it
3998                  * here because we will wait to program until after we check
3999                  * that it is safe to change the input set.
4000                  */
4001                 if (!flex_pit) {
4002                         new_flex_offset = true;
4003                         pit_index = i40e_unused_pit_index(pf);
4004                 } else {
4005                         pit_index = flex_pit->pit_index;
4006                 }
4007
4008                 /* Update the mask with the new offset */
4009                 new_mask |= i40e_pit_index_to_mask(pit_index);
4010         }
4011
4012         /* If the mask and flexible filter offsets for this filter match the
4013          * currently programmed values we don't need any input set change, so
4014          * this filter is safe to install.
4015          */
4016         if (new_mask == current_mask && !new_flex_offset)
4017                 return 0;
4018
4019         netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
4020                    i40e_flow_str(fsp));
4021         i40e_print_input_set(vsi, current_mask, new_mask);
4022         if (new_flex_offset) {
4023                 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
4024                            pit_index, src_offset);
4025         }
4026
4027         /* Hardware input sets are global across multiple ports, so even the
4028          * main port cannot change them when in MFP mode as this would impact
4029          * any filters on the other ports.
4030          */
4031         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4032                 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
4033                 return -EOPNOTSUPP;
4034         }
4035
4036         /* This filter requires us to update the input set. However, hardware
4037          * only supports one input set per flow type, and does not support
4038          * separate masks for each filter. This means that we can only support
4039          * a single mask for all filters of a specific type.
4040          *
4041          * If we have preexisting filters, they obviously depend on the
4042          * current programmed input set. Display a diagnostic message in this
4043          * case explaining why the filter could not be accepted.
4044          */
4045         if (*fdir_filter_count) {
4046                 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
4047                           i40e_flow_str(fsp),
4048                           *fdir_filter_count);
4049                 return -EOPNOTSUPP;
4050         }
4051
4052         i40e_write_fd_input_set(pf, index, new_mask);
4053
4054         /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
4055          * frames. If we're programming the input set for IPv4/Other, we also
4056          * need to program the IPv4/Fragmented input set. Since we don't have
4057          * separate support, we'll always assume and enforce that the two flow
4058          * types must have matching input sets.
4059          */
4060         if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
4061                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
4062                                         new_mask);
4063
4064         /* Add the new offset and update table, if necessary */
4065         if (new_flex_offset) {
4066                 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
4067                                            pit_index);
4068                 if (err)
4069                         return err;
4070
4071                 if (flex_l3) {
4072                         err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
4073                                                    src_offset,
4074                                                    pit_index);
4075                         if (err)
4076                                 return err;
4077                 }
4078
4079                 i40e_reprogram_flex_pit(pf);
4080         }
4081
4082         return 0;
4083 }
4084
4085 /**
4086  * i40e_match_fdir_filter - Return true of two filters match
4087  * @a: pointer to filter struct
4088  * @b: pointer to filter struct
4089  *
4090  * Returns true if the two filters match exactly the same criteria. I.e. they
4091  * match the same flow type and have the same parameters. We don't need to
4092  * check any input-set since all filters of the same flow type must use the
4093  * same input set.
4094  **/
4095 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
4096                                    struct i40e_fdir_filter *b)
4097 {
4098         /* The filters do not much if any of these criteria differ. */
4099         if (a->dst_ip != b->dst_ip ||
4100             a->src_ip != b->src_ip ||
4101             a->dst_port != b->dst_port ||
4102             a->src_port != b->src_port ||
4103             a->flow_type != b->flow_type ||
4104             a->ip4_proto != b->ip4_proto)
4105                 return false;
4106
4107         return true;
4108 }
4109
4110 /**
4111  * i40e_disallow_matching_filters - Check that new filters differ
4112  * @vsi: pointer to the targeted VSI
4113  * @input: new filter to check
4114  *
4115  * Due to hardware limitations, it is not possible for two filters that match
4116  * similar criteria to be programmed at the same time. This is true for a few
4117  * reasons:
4118  *
4119  * (a) all filters matching a particular flow type must use the same input
4120  * set, that is they must match the same criteria.
4121  * (b) different flow types will never match the same packet, as the flow type
4122  * is decided by hardware before checking which rules apply.
4123  * (c) hardware has no way to distinguish which order filters apply in.
4124  *
4125  * Due to this, we can't really support using the location data to order
4126  * filters in the hardware parsing. It is technically possible for the user to
4127  * request two filters matching the same criteria but which select different
4128  * queues. In this case, rather than keep both filters in the list, we reject
4129  * the 2nd filter when the user requests adding it.
4130  *
4131  * This avoids needing to track location for programming the filter to
4132  * hardware, and ensures that we avoid some strange scenarios involving
4133  * deleting filters which match the same criteria.
4134  **/
4135 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
4136                                           struct i40e_fdir_filter *input)
4137 {
4138         struct i40e_pf *pf = vsi->back;
4139         struct i40e_fdir_filter *rule;
4140         struct hlist_node *node2;
4141
4142         /* Loop through every filter, and check that it doesn't match */
4143         hlist_for_each_entry_safe(rule, node2,
4144                                   &pf->fdir_filter_list, fdir_node) {
4145                 /* Don't check the filters match if they share the same fd_id,
4146                  * since the new filter is actually just updating the target
4147                  * of the old filter.
4148                  */
4149                 if (rule->fd_id == input->fd_id)
4150                         continue;
4151
4152                 /* If any filters match, then print a warning message to the
4153                  * kernel message buffer and bail out.
4154                  */
4155                 if (i40e_match_fdir_filter(rule, input)) {
4156                         dev_warn(&pf->pdev->dev,
4157                                  "Existing user defined filter %d already matches this flow.\n",
4158                                  rule->fd_id);
4159                         return -EINVAL;
4160                 }
4161         }
4162
4163         return 0;
4164 }
4165
4166 /**
4167  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
4168  * @vsi: pointer to the targeted VSI
4169  * @cmd: command to get or set RX flow classification rules
4170  *
4171  * Add Flow Director filters for a specific flow spec based on their
4172  * protocol.  Returns 0 if the filters were successfully added.
4173  **/
4174 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
4175                                  struct ethtool_rxnfc *cmd)
4176 {
4177         struct i40e_rx_flow_userdef userdef;
4178         struct ethtool_rx_flow_spec *fsp;
4179         struct i40e_fdir_filter *input;
4180         u16 dest_vsi = 0, q_index = 0;
4181         struct i40e_pf *pf;
4182         int ret = -EINVAL;
4183         u8 dest_ctl;
4184
4185         if (!vsi)
4186                 return -EINVAL;
4187         pf = vsi->back;
4188
4189         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
4190                 return -EOPNOTSUPP;
4191
4192         if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
4193                 return -ENOSPC;
4194
4195         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
4196             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
4197                 return -EBUSY;
4198
4199         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
4200                 return -EBUSY;
4201
4202         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
4203
4204         /* Parse the user-defined field */
4205         if (i40e_parse_rx_flow_user_data(fsp, &userdef))
4206                 return -EINVAL;
4207
4208         /* Extended MAC field is not supported */
4209         if (fsp->flow_type & FLOW_MAC_EXT)
4210                 return -EINVAL;
4211
4212         ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
4213         if (ret)
4214                 return ret;
4215
4216         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
4217                               pf->hw.func_caps.fd_filters_guaranteed)) {
4218                 return -EINVAL;
4219         }
4220
4221         /* ring_cookie is either the drop index, or is a mask of the queue
4222          * index and VF id we wish to target.
4223          */
4224         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
4225                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4226         } else {
4227                 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
4228                 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
4229
4230                 if (!vf) {
4231                         if (ring >= vsi->num_queue_pairs)
4232                                 return -EINVAL;
4233                         dest_vsi = vsi->id;
4234                 } else {
4235                         /* VFs are zero-indexed, so we subtract one here */
4236                         vf--;
4237
4238                         if (vf >= pf->num_alloc_vfs)
4239                                 return -EINVAL;
4240                         if (ring >= pf->vf[vf].num_queue_pairs)
4241                                 return -EINVAL;
4242                         dest_vsi = pf->vf[vf].lan_vsi_id;
4243                 }
4244                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
4245                 q_index = ring;
4246         }
4247
4248         input = kzalloc(sizeof(*input), GFP_KERNEL);
4249
4250         if (!input)
4251                 return -ENOMEM;
4252
4253         input->fd_id = fsp->location;
4254         input->q_index = q_index;
4255         input->dest_vsi = dest_vsi;
4256         input->dest_ctl = dest_ctl;
4257         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4258         input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4259         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4260         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4261         input->flow_type = fsp->flow_type & ~FLOW_EXT;
4262         input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
4263
4264         /* Reverse the src and dest notion, since the HW expects them to be from
4265          * Tx perspective where as the input from user is from Rx filter view.
4266          */
4267         input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
4268         input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4269         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4270         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4271
4272         if (userdef.flex_filter) {
4273                 input->flex_filter = true;
4274                 input->flex_word = cpu_to_be16(userdef.flex_word);
4275                 input->flex_offset = userdef.flex_offset;
4276         }
4277
4278         /* Avoid programming two filters with identical match criteria. */
4279         ret = i40e_disallow_matching_filters(vsi, input);
4280         if (ret)
4281                 goto free_filter_memory;
4282
4283         /* Add the input filter to the fdir_input_list, possibly replacing
4284          * a previous filter. Do not free the input structure after adding it
4285          * to the list as this would cause a use-after-free bug.
4286          */
4287         i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
4288         ret = i40e_add_del_fdir(vsi, input, true);
4289         if (ret)
4290                 goto remove_sw_rule;
4291         return 0;
4292
4293 remove_sw_rule:
4294         hlist_del(&input->fdir_node);
4295         pf->fdir_pf_active_filters--;
4296 free_filter_memory:
4297         kfree(input);
4298         return ret;
4299 }
4300
4301 /**
4302  * i40e_set_rxnfc - command to set RX flow classification rules
4303  * @netdev: network interface device structure
4304  * @cmd: ethtool rxnfc command
4305  *
4306  * Returns Success if the command is supported.
4307  **/
4308 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
4309 {
4310         struct i40e_netdev_priv *np = netdev_priv(netdev);
4311         struct i40e_vsi *vsi = np->vsi;
4312         struct i40e_pf *pf = vsi->back;
4313         int ret = -EOPNOTSUPP;
4314
4315         switch (cmd->cmd) {
4316         case ETHTOOL_SRXFH:
4317                 ret = i40e_set_rss_hash_opt(pf, cmd);
4318                 break;
4319         case ETHTOOL_SRXCLSRLINS:
4320                 ret = i40e_add_fdir_ethtool(vsi, cmd);
4321                 break;
4322         case ETHTOOL_SRXCLSRLDEL:
4323                 ret = i40e_del_fdir_entry(vsi, cmd);
4324                 break;
4325         default:
4326                 break;
4327         }
4328
4329         return ret;
4330 }
4331
4332 /**
4333  * i40e_max_channels - get Max number of combined channels supported
4334  * @vsi: vsi pointer
4335  **/
4336 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
4337 {
4338         /* TODO: This code assumes DCB and FD is disabled for now. */
4339         return vsi->alloc_queue_pairs;
4340 }
4341
4342 /**
4343  * i40e_get_channels - Get the current channels enabled and max supported etc.
4344  * @dev: network interface device structure
4345  * @ch: ethtool channels structure
4346  *
4347  * We don't support separate tx and rx queues as channels. The other count
4348  * represents how many queues are being used for control. max_combined counts
4349  * how many queue pairs we can support. They may not be mapped 1 to 1 with
4350  * q_vectors since we support a lot more queue pairs than q_vectors.
4351  **/
4352 static void i40e_get_channels(struct net_device *dev,
4353                               struct ethtool_channels *ch)
4354 {
4355         struct i40e_netdev_priv *np = netdev_priv(dev);
4356         struct i40e_vsi *vsi = np->vsi;
4357         struct i40e_pf *pf = vsi->back;
4358
4359         /* report maximum channels */
4360         ch->max_combined = i40e_max_channels(vsi);
4361
4362         /* report info for other vector */
4363         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
4364         ch->max_other = ch->other_count;
4365
4366         /* Note: This code assumes DCB is disabled for now. */
4367         ch->combined_count = vsi->num_queue_pairs;
4368 }
4369
4370 /**
4371  * i40e_set_channels - Set the new channels count.
4372  * @dev: network interface device structure
4373  * @ch: ethtool channels structure
4374  *
4375  * The new channels count may not be the same as requested by the user
4376  * since it gets rounded down to a power of 2 value.
4377  **/
4378 static int i40e_set_channels(struct net_device *dev,
4379                              struct ethtool_channels *ch)
4380 {
4381         const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4382         struct i40e_netdev_priv *np = netdev_priv(dev);
4383         unsigned int count = ch->combined_count;
4384         struct i40e_vsi *vsi = np->vsi;
4385         struct i40e_pf *pf = vsi->back;
4386         struct i40e_fdir_filter *rule;
4387         struct hlist_node *node2;
4388         int new_count;
4389         int err = 0;
4390
4391         /* We do not support setting channels for any other VSI at present */
4392         if (vsi->type != I40E_VSI_MAIN)
4393                 return -EINVAL;
4394
4395         /* We do not support setting channels via ethtool when TCs are
4396          * configured through mqprio
4397          */
4398         if (pf->flags & I40E_FLAG_TC_MQPRIO)
4399                 return -EINVAL;
4400
4401         /* verify they are not requesting separate vectors */
4402         if (!count || ch->rx_count || ch->tx_count)
4403                 return -EINVAL;
4404
4405         /* verify other_count has not changed */
4406         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
4407                 return -EINVAL;
4408
4409         /* verify the number of channels does not exceed hardware limits */
4410         if (count > i40e_max_channels(vsi))
4411                 return -EINVAL;
4412
4413         /* verify that the number of channels does not invalidate any current
4414          * flow director rules
4415          */
4416         hlist_for_each_entry_safe(rule, node2,
4417                                   &pf->fdir_filter_list, fdir_node) {
4418                 if (rule->dest_ctl != drop && count <= rule->q_index) {
4419                         dev_warn(&pf->pdev->dev,
4420                                  "Existing user defined filter %d assigns flow to queue %d\n",
4421                                  rule->fd_id, rule->q_index);
4422                         err = -EINVAL;
4423                 }
4424         }
4425
4426         if (err) {
4427                 dev_err(&pf->pdev->dev,
4428                         "Existing filter rules must be deleted to reduce combined channel count to %d\n",
4429                         count);
4430                 return err;
4431         }
4432
4433         /* update feature limits from largest to smallest supported values */
4434         /* TODO: Flow director limit, DCB etc */
4435
4436         /* use rss_reconfig to rebuild with new queue count and update traffic
4437          * class queue mapping
4438          */
4439         new_count = i40e_reconfig_rss_queues(pf, count);
4440         if (new_count > 0)
4441                 return 0;
4442         else
4443                 return -EINVAL;
4444 }
4445
4446 /**
4447  * i40e_get_rxfh_key_size - get the RSS hash key size
4448  * @netdev: network interface device structure
4449  *
4450  * Returns the table size.
4451  **/
4452 static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
4453 {
4454         return I40E_HKEY_ARRAY_SIZE;
4455 }
4456
4457 /**
4458  * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
4459  * @netdev: network interface device structure
4460  *
4461  * Returns the table size.
4462  **/
4463 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
4464 {
4465         return I40E_HLUT_ARRAY_SIZE;
4466 }
4467
4468 /**
4469  * i40e_get_rxfh - get the rx flow hash indirection table
4470  * @netdev: network interface device structure
4471  * @indir: indirection table
4472  * @key: hash key
4473  * @hfunc: hash function
4474  *
4475  * Reads the indirection table directly from the hardware. Returns 0 on
4476  * success.
4477  **/
4478 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
4479                          u8 *hfunc)
4480 {
4481         struct i40e_netdev_priv *np = netdev_priv(netdev);
4482         struct i40e_vsi *vsi = np->vsi;
4483         u8 *lut, *seed = NULL;
4484         int ret;
4485         u16 i;
4486
4487         if (hfunc)
4488                 *hfunc = ETH_RSS_HASH_TOP;
4489
4490         if (!indir)
4491                 return 0;
4492
4493         seed = key;
4494         lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
4495         if (!lut)
4496                 return -ENOMEM;
4497         ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
4498         if (ret)
4499                 goto out;
4500         for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
4501                 indir[i] = (u32)(lut[i]);
4502
4503 out:
4504         kfree(lut);
4505
4506         return ret;
4507 }
4508
4509 /**
4510  * i40e_set_rxfh - set the rx flow hash indirection table
4511  * @netdev: network interface device structure
4512  * @indir: indirection table
4513  * @key: hash key
4514  * @hfunc: hash function to use
4515  *
4516  * Returns -EINVAL if the table specifies an invalid queue id, otherwise
4517  * returns 0 after programming the table.
4518  **/
4519 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
4520                          const u8 *key, const u8 hfunc)
4521 {
4522         struct i40e_netdev_priv *np = netdev_priv(netdev);
4523         struct i40e_vsi *vsi = np->vsi;
4524         struct i40e_pf *pf = vsi->back;
4525         u8 *seed = NULL;
4526         u16 i;
4527
4528         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
4529                 return -EOPNOTSUPP;
4530
4531         if (key) {
4532                 if (!vsi->rss_hkey_user) {
4533                         vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
4534                                                      GFP_KERNEL);
4535                         if (!vsi->rss_hkey_user)
4536                                 return -ENOMEM;
4537                 }
4538                 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
4539                 seed = vsi->rss_hkey_user;
4540         }
4541         if (!vsi->rss_lut_user) {
4542                 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
4543                 if (!vsi->rss_lut_user)
4544                         return -ENOMEM;
4545         }
4546
4547         /* Each 32 bits pointed by 'indir' is stored with a lut entry */
4548         if (indir)
4549                 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
4550                         vsi->rss_lut_user[i] = (u8)(indir[i]);
4551         else
4552                 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
4553                                   vsi->rss_size);
4554
4555         return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
4556                                I40E_HLUT_ARRAY_SIZE);
4557 }
4558
4559 /**
4560  * i40e_get_priv_flags - report device private flags
4561  * @dev: network interface device structure
4562  *
4563  * The get string set count and the string set should be matched for each
4564  * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
4565  * array.
4566  *
4567  * Returns a u32 bitmap of flags.
4568  **/
4569 static u32 i40e_get_priv_flags(struct net_device *dev)
4570 {
4571         struct i40e_netdev_priv *np = netdev_priv(dev);
4572         struct i40e_vsi *vsi = np->vsi;
4573         struct i40e_pf *pf = vsi->back;
4574         u32 i, j, ret_flags = 0;
4575
4576         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
4577                 const struct i40e_priv_flags *priv_flags;
4578
4579                 priv_flags = &i40e_gstrings_priv_flags[i];
4580
4581                 if (priv_flags->flag & pf->flags)
4582                         ret_flags |= BIT(i);
4583         }
4584
4585         if (pf->hw.pf_id != 0)
4586                 return ret_flags;
4587
4588         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
4589                 const struct i40e_priv_flags *priv_flags;
4590
4591                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
4592
4593                 if (priv_flags->flag & pf->flags)
4594                         ret_flags |= BIT(i + j);
4595         }
4596
4597         return ret_flags;
4598 }
4599
4600 /**
4601  * i40e_set_priv_flags - set private flags
4602  * @dev: network interface device structure
4603  * @flags: bit flags to be set
4604  **/
4605 static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
4606 {
4607         struct i40e_netdev_priv *np = netdev_priv(dev);
4608         struct i40e_vsi *vsi = np->vsi;
4609         struct i40e_pf *pf = vsi->back;
4610         u64 orig_flags, new_flags, changed_flags;
4611         u32 i, j;
4612
4613         orig_flags = READ_ONCE(pf->flags);
4614         new_flags = orig_flags;
4615
4616         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
4617                 const struct i40e_priv_flags *priv_flags;
4618
4619                 priv_flags = &i40e_gstrings_priv_flags[i];
4620
4621                 if (flags & BIT(i))
4622                         new_flags |= priv_flags->flag;
4623                 else
4624                         new_flags &= ~(priv_flags->flag);
4625
4626                 /* If this is a read-only flag, it can't be changed */
4627                 if (priv_flags->read_only &&
4628                     ((orig_flags ^ new_flags) & ~BIT(i)))
4629                         return -EOPNOTSUPP;
4630         }
4631
4632         if (pf->hw.pf_id != 0)
4633                 goto flags_complete;
4634
4635         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
4636                 const struct i40e_priv_flags *priv_flags;
4637
4638                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
4639
4640                 if (flags & BIT(i + j))
4641                         new_flags |= priv_flags->flag;
4642                 else
4643                         new_flags &= ~(priv_flags->flag);
4644
4645                 /* If this is a read-only flag, it can't be changed */
4646                 if (priv_flags->read_only &&
4647                     ((orig_flags ^ new_flags) & ~BIT(i)))
4648                         return -EOPNOTSUPP;
4649         }
4650
4651 flags_complete:
4652         changed_flags = orig_flags ^ new_flags;
4653
4654         /* Before we finalize any flag changes, we need to perform some
4655          * checks to ensure that the changes are supported and safe.
4656          */
4657
4658         /* ATR eviction is not supported on all devices */
4659         if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
4660             !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
4661                 return -EOPNOTSUPP;
4662
4663         /* If the driver detected FW LLDP was disabled on init, this flag could
4664          * be set, however we do not support _changing_ the flag:
4665          * - on XL710 if NPAR is enabled or FW API version < 1.7
4666          * - on X722 with FW API version < 1.6
4667          * There are situations where older FW versions/NPAR enabled PFs could
4668          * disable LLDP, however we _must_ not allow the user to enable/disable
4669          * LLDP with this flag on unsupported FW versions.
4670          */
4671         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
4672                 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
4673                         dev_warn(&pf->pdev->dev,
4674                                  "Device does not support changing FW LLDP\n");
4675                         return -EOPNOTSUPP;
4676                 }
4677         }
4678
4679         /* Now that we've checked to ensure that the new flags are valid, load
4680          * them into place. Since we only modify flags either (a) during
4681          * initialization or (b) while holding the RTNL lock, we don't need
4682          * anything fancy here.
4683          */
4684         pf->flags = new_flags;
4685
4686         /* Process any additional changes needed as a result of flag changes.
4687          * The changed_flags value reflects the list of bits that were
4688          * changed in the code above.
4689          */
4690
4691         /* Flush current ATR settings if ATR was disabled */
4692         if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
4693             !(pf->flags & I40E_FLAG_FD_ATR_ENABLED)) {
4694                 set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
4695                 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
4696         }
4697
4698         if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
4699                 u16 sw_flags = 0, valid_flags = 0;
4700                 int ret;
4701
4702                 if (!(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
4703                         sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
4704                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
4705                 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
4706                                                 0, NULL);
4707                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
4708                         dev_info(&pf->pdev->dev,
4709                                  "couldn't set switch config bits, err %s aq_err %s\n",
4710                                  i40e_stat_str(&pf->hw, ret),
4711                                  i40e_aq_str(&pf->hw,
4712                                              pf->hw.aq.asq_last_status));
4713                         /* not a fatal problem, just keep going */
4714                 }
4715         }
4716
4717         if ((changed_flags & pf->flags &
4718              I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
4719             (pf->flags & I40E_FLAG_MFP_ENABLED))
4720                 dev_warn(&pf->pdev->dev,
4721                          "Turning on link-down-on-close flag may affect other partitions\n");
4722
4723         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
4724                 if (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) {
4725                         struct i40e_dcbx_config *dcbcfg;
4726
4727                         i40e_aq_stop_lldp(&pf->hw, true, NULL);
4728                         i40e_aq_set_dcb_parameters(&pf->hw, true, NULL);
4729                         /* reset local_dcbx_config to default */
4730                         dcbcfg = &pf->hw.local_dcbx_config;
4731                         dcbcfg->etscfg.willing = 1;
4732                         dcbcfg->etscfg.maxtcs = 0;
4733                         dcbcfg->etscfg.tcbwtable[0] = 100;
4734                         for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++)
4735                                 dcbcfg->etscfg.tcbwtable[i] = 0;
4736                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4737                                 dcbcfg->etscfg.prioritytable[i] = 0;
4738                         dcbcfg->etscfg.tsatable[0] = I40E_IEEE_TSA_ETS;
4739                         dcbcfg->pfc.willing = 1;
4740                         dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
4741                 } else {
4742                         i40e_aq_start_lldp(&pf->hw, NULL);
4743                 }
4744         }
4745
4746         /* Issue reset to cause things to take effect, as additional bits
4747          * are added we will need to create a mask of bits requiring reset
4748          */
4749         if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
4750                              I40E_FLAG_LEGACY_RX |
4751                              I40E_FLAG_SOURCE_PRUNING_DISABLED |
4752                              I40E_FLAG_DISABLE_FW_LLDP))
4753                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
4754
4755         return 0;
4756 }
4757
4758 /**
4759  * i40e_get_module_info - get (Q)SFP+ module type info
4760  * @netdev: network interface device structure
4761  * @modinfo: module EEPROM size and layout information structure
4762  **/
4763 static int i40e_get_module_info(struct net_device *netdev,
4764                                 struct ethtool_modinfo *modinfo)
4765 {
4766         struct i40e_netdev_priv *np = netdev_priv(netdev);
4767         struct i40e_vsi *vsi = np->vsi;
4768         struct i40e_pf *pf = vsi->back;
4769         struct i40e_hw *hw = &pf->hw;
4770         u32 sff8472_comp = 0;
4771         u32 sff8472_swap = 0;
4772         u32 sff8636_rev = 0;
4773         i40e_status status;
4774         u32 type = 0;
4775
4776         /* Check if firmware supports reading module EEPROM. */
4777         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
4778                 netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
4779                 return -EINVAL;
4780         }
4781
4782         status = i40e_update_link_info(hw);
4783         if (status)
4784                 return -EIO;
4785
4786         if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
4787                 netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n");
4788                 return -EINVAL;
4789         }
4790
4791         type = hw->phy.link_info.module_type[0];
4792
4793         switch (type) {
4794         case I40E_MODULE_TYPE_SFP:
4795                 status = i40e_aq_get_phy_register(hw,
4796                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
4797                                 I40E_I2C_EEPROM_DEV_ADDR,
4798                                 I40E_MODULE_SFF_8472_COMP,
4799                                 &sff8472_comp, NULL);
4800                 if (status)
4801                         return -EIO;
4802
4803                 status = i40e_aq_get_phy_register(hw,
4804                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
4805                                 I40E_I2C_EEPROM_DEV_ADDR,
4806                                 I40E_MODULE_SFF_8472_SWAP,
4807                                 &sff8472_swap, NULL);
4808                 if (status)
4809                         return -EIO;
4810
4811                 /* Check if the module requires address swap to access
4812                  * the other EEPROM memory page.
4813                  */
4814                 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
4815                         netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
4816                         modinfo->type = ETH_MODULE_SFF_8079;
4817                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
4818                 } else if (sff8472_comp == 0x00) {
4819                         /* Module is not SFF-8472 compliant */
4820                         modinfo->type = ETH_MODULE_SFF_8079;
4821                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
4822                 } else {
4823                         modinfo->type = ETH_MODULE_SFF_8472;
4824                         modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
4825                 }
4826                 break;
4827         case I40E_MODULE_TYPE_QSFP_PLUS:
4828                 /* Read from memory page 0. */
4829                 status = i40e_aq_get_phy_register(hw,
4830                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
4831                                 0,
4832                                 I40E_MODULE_REVISION_ADDR,
4833                                 &sff8636_rev, NULL);
4834                 if (status)
4835                         return -EIO;
4836                 /* Determine revision compliance byte */
4837                 if (sff8636_rev > 0x02) {
4838                         /* Module is SFF-8636 compliant */
4839                         modinfo->type = ETH_MODULE_SFF_8636;
4840                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
4841                 } else {
4842                         modinfo->type = ETH_MODULE_SFF_8436;
4843                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
4844                 }
4845                 break;
4846         case I40E_MODULE_TYPE_QSFP28:
4847                 modinfo->type = ETH_MODULE_SFF_8636;
4848                 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
4849                 break;
4850         default:
4851                 netdev_err(vsi->netdev, "Module type unrecognized\n");
4852                 return -EINVAL;
4853         }
4854         return 0;
4855 }
4856
4857 /**
4858  * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
4859  * @netdev: network interface device structure
4860  * @ee: EEPROM dump request structure
4861  * @data: buffer to be filled with EEPROM contents
4862  **/
4863 static int i40e_get_module_eeprom(struct net_device *netdev,
4864                                   struct ethtool_eeprom *ee,
4865                                   u8 *data)
4866 {
4867         struct i40e_netdev_priv *np = netdev_priv(netdev);
4868         struct i40e_vsi *vsi = np->vsi;
4869         struct i40e_pf *pf = vsi->back;
4870         struct i40e_hw *hw = &pf->hw;
4871         bool is_sfp = false;
4872         i40e_status status;
4873         u32 value = 0;
4874         int i;
4875
4876         if (!ee || !ee->len || !data)
4877                 return -EINVAL;
4878
4879         if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
4880                 is_sfp = true;
4881
4882         for (i = 0; i < ee->len; i++) {
4883                 u32 offset = i + ee->offset;
4884                 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
4885
4886                 /* Check if we need to access the other memory page */
4887                 if (is_sfp) {
4888                         if (offset >= ETH_MODULE_SFF_8079_LEN) {
4889                                 offset -= ETH_MODULE_SFF_8079_LEN;
4890                                 addr = I40E_I2C_EEPROM_DEV_ADDR2;
4891                         }
4892                 } else {
4893                         while (offset >= ETH_MODULE_SFF_8436_LEN) {
4894                                 /* Compute memory page number and offset. */
4895                                 offset -= ETH_MODULE_SFF_8436_LEN / 2;
4896                                 addr++;
4897                         }
4898                 }
4899
4900                 status = i40e_aq_get_phy_register(hw,
4901                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
4902                                 addr, offset, &value, NULL);
4903                 if (status)
4904                         return -EIO;
4905                 data[i] = value;
4906         }
4907         return 0;
4908 }
4909
4910 static const struct ethtool_ops i40e_ethtool_ops = {
4911         .get_drvinfo            = i40e_get_drvinfo,
4912         .get_regs_len           = i40e_get_regs_len,
4913         .get_regs               = i40e_get_regs,
4914         .nway_reset             = i40e_nway_reset,
4915         .get_link               = ethtool_op_get_link,
4916         .get_wol                = i40e_get_wol,
4917         .set_wol                = i40e_set_wol,
4918         .set_eeprom             = i40e_set_eeprom,
4919         .get_eeprom_len         = i40e_get_eeprom_len,
4920         .get_eeprom             = i40e_get_eeprom,
4921         .get_ringparam          = i40e_get_ringparam,
4922         .set_ringparam          = i40e_set_ringparam,
4923         .get_pauseparam         = i40e_get_pauseparam,
4924         .set_pauseparam         = i40e_set_pauseparam,
4925         .get_msglevel           = i40e_get_msglevel,
4926         .set_msglevel           = i40e_set_msglevel,
4927         .get_rxnfc              = i40e_get_rxnfc,
4928         .set_rxnfc              = i40e_set_rxnfc,
4929         .self_test              = i40e_diag_test,
4930         .get_strings            = i40e_get_strings,
4931         .set_phys_id            = i40e_set_phys_id,
4932         .get_sset_count         = i40e_get_sset_count,
4933         .get_ethtool_stats      = i40e_get_ethtool_stats,
4934         .get_coalesce           = i40e_get_coalesce,
4935         .set_coalesce           = i40e_set_coalesce,
4936         .get_rxfh_key_size      = i40e_get_rxfh_key_size,
4937         .get_rxfh_indir_size    = i40e_get_rxfh_indir_size,
4938         .get_rxfh               = i40e_get_rxfh,
4939         .set_rxfh               = i40e_set_rxfh,
4940         .get_channels           = i40e_get_channels,
4941         .set_channels           = i40e_set_channels,
4942         .get_module_info        = i40e_get_module_info,
4943         .get_module_eeprom      = i40e_get_module_eeprom,
4944         .get_ts_info            = i40e_get_ts_info,
4945         .get_priv_flags         = i40e_get_priv_flags,
4946         .set_priv_flags         = i40e_set_priv_flags,
4947         .get_per_queue_coalesce = i40e_get_per_queue_coalesce,
4948         .set_per_queue_coalesce = i40e_set_per_queue_coalesce,
4949         .get_link_ksettings     = i40e_get_link_ksettings,
4950         .set_link_ksettings     = i40e_set_link_ksettings,
4951 };
4952
4953 void i40e_set_ethtool_ops(struct net_device *netdev)
4954 {
4955         netdev->ethtool_ops = &i40e_ethtool_ops;
4956 }