drivers/net/ethernet/aquantia/atlantic/aq_nic.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * aQuantia Corporation Network Driver
   4  * Copyright (C) 2014-2019 aQuantia Corporation. All rights reserved
   5  */
   6
   7 /* File aq_nic.c: Definition of common code for NIC. */
   8
   9 #include "aq_nic.h"
  10 #include "aq_ring.h"
  11 #include "aq_vec.h"
  12 #include "aq_hw.h"
  13 #include "aq_pci_func.h"
  14 #include "aq_main.h"
  15 #include "aq_phy.h"
  16 #include "aq_ptp.h"
  17 #include "aq_filters.h"
  18
  19 #include <linux/moduleparam.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/timer.h>
  23 #include <linux/cpu.h>
  24 #include <linux/ip.h>
  25 #include <linux/tcp.h>
  26 #include <net/ip.h>
  27
  28 static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
  29 module_param_named(aq_itr, aq_itr, uint, 0644);
  30 MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
  31
  32 static unsigned int aq_itr_tx;
  33 module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
  34 MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
  35
  36 static unsigned int aq_itr_rx;
  37 module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
  38 MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
  39
  40 static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
  41
  42 static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
  43 {
  44         static u8 rss_key[AQ_CFG_RSS_HASHKEY_SIZE] = {
  45                 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
  46                 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
  47                 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
  48                 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
  49                 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
  50         };
  51         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  52         struct aq_rss_parameters *rss_params;
  53         int i = 0;
  54
  55         rss_params = &cfg->aq_rss;
  56
  57         rss_params->hash_secret_key_size = sizeof(rss_key);
  58         memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
  59         rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
  60
  61         for (i = rss_params->indirection_table_size; i--;)
  62                 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
  63 }
  64
  65 /* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
  66 void aq_nic_cfg_start(struct aq_nic_s *self)
  67 {
  68         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  69
  70         cfg->tcs = AQ_CFG_TCS_DEF;
  71
  72         cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
  73
  74         cfg->itr = aq_itr;
  75         cfg->tx_itr = aq_itr_tx;
  76         cfg->rx_itr = aq_itr_rx;
  77
  78         cfg->rxpageorder = AQ_CFG_RX_PAGEORDER;
  79         cfg->is_rss = AQ_CFG_IS_RSS_DEF;
  80         cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF;
  81         cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
  82         cfg->fc.req = AQ_CFG_FC_MODE;
  83         cfg->wol = AQ_CFG_WOL_MODES;
  84
  85         cfg->mtu = AQ_CFG_MTU_DEF;
  86         cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
  87         cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
  88
  89         cfg->is_lro = AQ_CFG_IS_LRO_DEF;
  90
  91         /*descriptors */
  92         cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
  93         cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
  94
  95         /*rss rings */
  96         cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
  97         cfg->vecs = min(cfg->vecs, num_online_cpus());
  98         if (self->irqvecs > AQ_HW_SERVICE_IRQS)
  99                 cfg->vecs = min(cfg->vecs, self->irqvecs - AQ_HW_SERVICE_IRQS);
 100         /* cfg->vecs should be power of 2 for RSS */
 101         if (cfg->vecs >= 8U)
 102                 cfg->vecs = 8U;
 103         else if (cfg->vecs >= 4U)
 104                 cfg->vecs = 4U;
 105         else if (cfg->vecs >= 2U)
 106                 cfg->vecs = 2U;
 107         else
 108                 cfg->vecs = 1U;
 109
 110         cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
 111
 112         aq_nic_rss_init(self, cfg->num_rss_queues);
 113
 114         cfg->irq_type = aq_pci_func_get_irq_type(self);
 115
 116         if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
 117             (cfg->aq_hw_caps->vecs == 1U) ||
 118             (cfg->vecs == 1U)) {
 119                 cfg->is_rss = 0U;
 120                 cfg->vecs = 1U;
 121         }
 122
 123         /* Check if we have enough vectors allocated for
 124          * link status IRQ. If no - we'll know link state from
 125          * slower service task.
 126          */
 127         if (AQ_HW_SERVICE_IRQS > 0 && cfg->vecs + 1 <= self->irqvecs)
 128                 cfg->link_irq_vec = cfg->vecs;
 129         else
 130                 cfg->link_irq_vec = 0;
 131
 132         cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
 133         cfg->features = cfg->aq_hw_caps->hw_features;
 134         cfg->is_vlan_rx_strip = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_RX);
 135         cfg->is_vlan_tx_insert = !!(cfg->features & NETIF_F_HW_VLAN_CTAG_TX);
 136         cfg->is_vlan_force_promisc = true;
 137 }
 138
 139 static int aq_nic_update_link_status(struct aq_nic_s *self)
 140 {
 141         int err = self->aq_fw_ops->update_link_status(self->aq_hw);
 142         u32 fc = 0;
 143
 144         if (err)
 145                 return err;
 146
 147         if (self->aq_fw_ops->get_flow_control)
 148                 self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
 149         self->aq_nic_cfg.fc.cur = fc;
 150
 151         if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
 152                 netdev_info(self->ndev, "%s: link change old %d new %d\n",
 153                             AQ_CFG_DRV_NAME, self->link_status.mbps,
 154                             self->aq_hw->aq_link_status.mbps);
 155                 aq_nic_update_interrupt_moderation_settings(self);
 156
 157                 if (self->aq_ptp) {
 158                         aq_ptp_clock_init(self);
 159                         aq_ptp_tm_offset_set(self,
 160                                              self->aq_hw->aq_link_status.mbps);
 161                         aq_ptp_link_change(self);
 162                 }
 163
 164                 /* Driver has to update flow control settings on RX block
 165                  * on any link event.
 166                  * We should query FW whether it negotiated FC.
 167                  */
 168                 if (self->aq_hw_ops->hw_set_fc)
 169                         self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
 170         }
 171
 172         self->link_status = self->aq_hw->aq_link_status;
 173         if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
 174                 aq_utils_obj_set(&self->flags,
 175                                  AQ_NIC_FLAG_STARTED);
 176                 aq_utils_obj_clear(&self->flags,
 177                                    AQ_NIC_LINK_DOWN);
 178                 netif_carrier_on(self->ndev);
 179                 netif_tx_wake_all_queues(self->ndev);
 180         }
 181         if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
 182                 netif_carrier_off(self->ndev);
 183                 netif_tx_disable(self->ndev);
 184                 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
 185         }
 186
 187         return 0;
 188 }
 189
 190 static irqreturn_t aq_linkstate_threaded_isr(int irq, void *private)
 191 {
 192         struct aq_nic_s *self = private;
 193
 194         if (!self)
 195                 return IRQ_NONE;
 196
 197         aq_nic_update_link_status(self);
 198
 199         self->aq_hw_ops->hw_irq_enable(self->aq_hw,
 200                                        BIT(self->aq_nic_cfg.link_irq_vec));
 201
 202         return IRQ_HANDLED;
 203 }
 204
 205 static void aq_nic_service_task(struct work_struct *work)
 206 {
 207         struct aq_nic_s *self = container_of(work, struct aq_nic_s,
 208                                              service_task);
 209         int err;
 210
 211         aq_ptp_service_task(self);
 212
 213         if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
 214                 return;
 215
 216         err = aq_nic_update_link_status(self);
 217         if (err)
 218                 return;
 219
 220         mutex_lock(&self->fwreq_mutex);
 221         if (self->aq_fw_ops->update_stats)
 222                 self->aq_fw_ops->update_stats(self->aq_hw);
 223         mutex_unlock(&self->fwreq_mutex);
 224
 225         aq_nic_update_ndev_stats(self);
 226 }
 227
 228 static void aq_nic_service_timer_cb(struct timer_list *t)
 229 {
 230         struct aq_nic_s *self = from_timer(self, t, service_timer);
 231
 232         mod_timer(&self->service_timer,
 233                   jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
 234
 235         aq_ndev_schedule_work(&self->service_task);
 236 }
 237
 238 static void aq_nic_polling_timer_cb(struct timer_list *t)
 239 {
 240         struct aq_nic_s *self = from_timer(self, t, polling_timer);
 241         struct aq_vec_s *aq_vec = NULL;
 242         unsigned int i = 0U;
 243
 244         for (i = 0U, aq_vec = self->aq_vec[0];
 245                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 246                 aq_vec_isr(i, (void *)aq_vec);
 247
 248         mod_timer(&self->polling_timer, jiffies +
 249                   AQ_CFG_POLLING_TIMER_INTERVAL);
 250 }
 251
 252 int aq_nic_ndev_register(struct aq_nic_s *self)
 253 {
 254         int err = 0;
 255
 256         if (!self->ndev) {
 257                 err = -EINVAL;
 258                 goto err_exit;
 259         }
 260
 261         err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops);
 262         if (err)
 263                 goto err_exit;
 264
 265         mutex_lock(&self->fwreq_mutex);
 266         err = self->aq_fw_ops->get_mac_permanent(self->aq_hw,
 267                             self->ndev->dev_addr);
 268         mutex_unlock(&self->fwreq_mutex);
 269         if (err)
 270                 goto err_exit;
 271
 272 #if defined(AQ_CFG_MAC_ADDR_PERMANENT)
 273         {
 274                 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
 275
 276                 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
 277         }
 278 #endif
 279
 280         for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
 281              self->aq_vecs++) {
 282                 self->aq_vec[self->aq_vecs] =
 283                     aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
 284                 if (!self->aq_vec[self->aq_vecs]) {
 285                         err = -ENOMEM;
 286                         goto err_exit;
 287                 }
 288         }
 289
 290         netif_carrier_off(self->ndev);
 291
 292         netif_tx_disable(self->ndev);
 293
 294         err = register_netdev(self->ndev);
 295         if (err)
 296                 goto err_exit;
 297
 298 err_exit:
 299         return err;
 300 }
 301
 302 void aq_nic_ndev_init(struct aq_nic_s *self)
 303 {
 304         const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
 305         struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
 306
 307         self->ndev->hw_features |= aq_hw_caps->hw_features;
 308         self->ndev->features = aq_hw_caps->hw_features;
 309         self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
 310                                      NETIF_F_RXHASH | NETIF_F_SG |
 311                                      NETIF_F_LRO | NETIF_F_TSO;
 312         self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4;
 313         self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
 314         self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
 315
 316         self->msg_enable = NETIF_MSG_DRV | NETIF_MSG_LINK;
 317         self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
 318         self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
 319
 320 }
 321
 322 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
 323                         struct aq_ring_s *ring)
 324 {
 325         self->aq_ring_tx[idx] = ring;
 326 }
 327
 328 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
 329 {
 330         return self->ndev;
 331 }
 332
 333 int aq_nic_init(struct aq_nic_s *self)
 334 {
 335         struct aq_vec_s *aq_vec = NULL;
 336         unsigned int i = 0U;
 337         int err = 0;
 338
 339         self->power_state = AQ_HW_POWER_STATE_D0;
 340         mutex_lock(&self->fwreq_mutex);
 341         err = self->aq_hw_ops->hw_reset(self->aq_hw);
 342         mutex_unlock(&self->fwreq_mutex);
 343         if (err < 0)
 344                 goto err_exit;
 345
 346         err = self->aq_hw_ops->hw_init(self->aq_hw,
 347                                        aq_nic_get_ndev(self)->dev_addr);
 348         if (err < 0)
 349                 goto err_exit;
 350
 351         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_TP) {
 352                 self->aq_hw->phy_id = HW_ATL_PHY_ID_MAX;
 353                 err = aq_phy_init(self->aq_hw);
 354         }
 355
 356         for (i = 0U, aq_vec = self->aq_vec[0];
 357                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 358                 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
 359
 360         err = aq_ptp_init(self, self->irqvecs - 1);
 361         if (err < 0)
 362                 goto err_exit;
 363
 364         err = aq_ptp_ring_alloc(self);
 365         if (err < 0)
 366                 goto err_exit;
 367
 368         err = aq_ptp_ring_init(self);
 369         if (err < 0)
 370                 goto err_exit;
 371
 372         netif_carrier_off(self->ndev);
 373
 374 err_exit:
 375         return err;
 376 }
 377
 378 int aq_nic_start(struct aq_nic_s *self)
 379 {
 380         struct aq_vec_s *aq_vec = NULL;
 381         unsigned int i = 0U;
 382         int err = 0;
 383
 384         err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 385                                                      self->mc_list.ar,
 386                                                      self->mc_list.count);
 387         if (err < 0)
 388                 goto err_exit;
 389
 390         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
 391                                                     self->packet_filter);
 392         if (err < 0)
 393                 goto err_exit;
 394
 395         for (i = 0U, aq_vec = self->aq_vec[0];
 396                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 397                 err = aq_vec_start(aq_vec);
 398                 if (err < 0)
 399                         goto err_exit;
 400         }
 401
 402         err = aq_ptp_ring_start(self);
 403         if (err < 0)
 404                 goto err_exit;
 405
 406         aq_nic_set_loopback(self);
 407
 408         err = self->aq_hw_ops->hw_start(self->aq_hw);
 409         if (err < 0)
 410                 goto err_exit;
 411
 412         err = aq_nic_update_interrupt_moderation_settings(self);
 413         if (err)
 414                 goto err_exit;
 415
 416         INIT_WORK(&self->service_task, aq_nic_service_task);
 417
 418         timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
 419         aq_nic_service_timer_cb(&self->service_timer);
 420
 421         if (self->aq_nic_cfg.is_polling) {
 422                 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
 423                 mod_timer(&self->polling_timer, jiffies +
 424                           AQ_CFG_POLLING_TIMER_INTERVAL);
 425         } else {
 426                 for (i = 0U, aq_vec = self->aq_vec[0];
 427                         self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 428                         err = aq_pci_func_alloc_irq(self, i, self->ndev->name,
 429                                                     aq_vec_isr, aq_vec,
 430                                                     aq_vec_get_affinity_mask(aq_vec));
 431                         if (err < 0)
 432                                 goto err_exit;
 433                 }
 434
 435                 err = aq_ptp_irq_alloc(self);
 436                 if (err < 0)
 437                         goto err_exit;
 438
 439                 if (self->aq_nic_cfg.link_irq_vec) {
 440                         int irqvec = pci_irq_vector(self->pdev,
 441                                                    self->aq_nic_cfg.link_irq_vec);
 442                         err = request_threaded_irq(irqvec, NULL,
 443                                                    aq_linkstate_threaded_isr,
 444                                                    IRQF_SHARED | IRQF_ONESHOT,
 445                                                    self->ndev->name, self);
 446                         if (err < 0)
 447                                 goto err_exit;
 448                         self->msix_entry_mask |= (1 << self->aq_nic_cfg.link_irq_vec);
 449                 }
 450
 451                 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
 452                                                      AQ_CFG_IRQ_MASK);
 453                 if (err < 0)
 454                         goto err_exit;
 455         }
 456
 457         err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
 458         if (err < 0)
 459                 goto err_exit;
 460
 461         err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
 462         if (err < 0)
 463                 goto err_exit;
 464
 465         netif_tx_start_all_queues(self->ndev);
 466
 467 err_exit:
 468         return err;
 469 }
 470
 471 unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
 472                             struct aq_ring_s *ring)
 473 {
 474         unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
 475         struct aq_ring_buff_s *first = NULL;
 476         u8 ipver = ip_hdr(skb)->version;
 477         struct aq_ring_buff_s *dx_buff;
 478         bool need_context_tag = false;
 479         unsigned int frag_count = 0U;
 480         unsigned int ret = 0U;
 481         unsigned int dx;
 482         u8 l4proto = 0;
 483
 484         if (ipver == 4)
 485                 l4proto = ip_hdr(skb)->protocol;
 486         else if (ipver == 6)
 487                 l4proto = ipv6_hdr(skb)->nexthdr;
 488
 489         dx = ring->sw_tail;
 490         dx_buff = &ring->buff_ring[dx];
 491         dx_buff->flags = 0U;
 492
 493         if (unlikely(skb_is_gso(skb))) {
 494                 dx_buff->mss = skb_shinfo(skb)->gso_size;
 495                 if (l4proto == IPPROTO_TCP) {
 496                         dx_buff->is_gso_tcp = 1U;
 497                         dx_buff->len_l4 = tcp_hdrlen(skb);
 498                 } else if (l4proto == IPPROTO_UDP) {
 499                         dx_buff->is_gso_udp = 1U;
 500                         dx_buff->len_l4 = sizeof(struct udphdr);
 501                         /* UDP GSO Hardware does not replace packet length. */
 502                         udp_hdr(skb)->len = htons(dx_buff->mss +
 503                                                   dx_buff->len_l4);
 504                 } else {
 505                         WARN_ONCE(true, "Bad GSO mode");
 506                         goto exit;
 507                 }
 508                 dx_buff->len_pkt = skb->len;
 509                 dx_buff->len_l2 = ETH_HLEN;
 510                 dx_buff->len_l3 = skb_network_header_len(skb);
 511                 dx_buff->eop_index = 0xffffU;
 512                 dx_buff->is_ipv6 = (ipver == 6);
 513                 need_context_tag = true;
 514         }
 515
 516         if (self->aq_nic_cfg.is_vlan_tx_insert && skb_vlan_tag_present(skb)) {
 517                 dx_buff->vlan_tx_tag = skb_vlan_tag_get(skb);
 518                 dx_buff->len_pkt = skb->len;
 519                 dx_buff->is_vlan = 1U;
 520                 need_context_tag = true;
 521         }
 522
 523         if (need_context_tag) {
 524                 dx = aq_ring_next_dx(ring, dx);
 525                 dx_buff = &ring->buff_ring[dx];
 526                 dx_buff->flags = 0U;
 527                 ++ret;
 528         }
 529
 530         dx_buff->len = skb_headlen(skb);
 531         dx_buff->pa = dma_map_single(aq_nic_get_dev(self),
 532                                      skb->data,
 533                                      dx_buff->len,
 534                                      DMA_TO_DEVICE);
 535
 536         if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa))) {
 537                 ret = 0;
 538                 goto exit;
 539         }
 540
 541         first = dx_buff;
 542         dx_buff->len_pkt = skb->len;
 543         dx_buff->is_sop = 1U;
 544         dx_buff->is_mapped = 1U;
 545         ++ret;
 546
 547         if (skb->ip_summed == CHECKSUM_PARTIAL) {
 548                 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol);
 549                 dx_buff->is_tcp_cso = (l4proto == IPPROTO_TCP);
 550                 dx_buff->is_udp_cso = (l4proto == IPPROTO_UDP);
 551         }
 552
 553         for (; nr_frags--; ++frag_count) {
 554                 unsigned int frag_len = 0U;
 555                 unsigned int buff_offset = 0U;
 556                 unsigned int buff_size = 0U;
 557                 dma_addr_t frag_pa;
 558                 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
 559
 560                 frag_len = skb_frag_size(frag);
 561
 562                 while (frag_len) {
 563                         if (frag_len > AQ_CFG_TX_FRAME_MAX)
 564                                 buff_size = AQ_CFG_TX_FRAME_MAX;
 565                         else
 566                                 buff_size = frag_len;
 567
 568                         frag_pa = skb_frag_dma_map(aq_nic_get_dev(self),
 569                                                    frag,
 570                                                    buff_offset,
 571                                                    buff_size,
 572                                                    DMA_TO_DEVICE);
 573
 574                         if (unlikely(dma_mapping_error(aq_nic_get_dev(self),
 575                                                        frag_pa)))
 576                                 goto mapping_error;
 577
 578                         dx = aq_ring_next_dx(ring, dx);
 579                         dx_buff = &ring->buff_ring[dx];
 580
 581                         dx_buff->flags = 0U;
 582                         dx_buff->len = buff_size;
 583                         dx_buff->pa = frag_pa;
 584                         dx_buff->is_mapped = 1U;
 585                         dx_buff->eop_index = 0xffffU;
 586
 587                         frag_len -= buff_size;
 588                         buff_offset += buff_size;
 589
 590                         ++ret;
 591                 }
 592         }
 593
 594         first->eop_index = dx;
 595         dx_buff->is_eop = 1U;
 596         dx_buff->skb = skb;
 597         goto exit;
 598
 599 mapping_error:
 600         for (dx = ring->sw_tail;
 601              ret > 0;
 602              --ret, dx = aq_ring_next_dx(ring, dx)) {
 603                 dx_buff = &ring->buff_ring[dx];
 604
 605                 if (!(dx_buff->is_gso_tcp || dx_buff->is_gso_udp) &&
 606                     !dx_buff->is_vlan && dx_buff->pa) {
 607                         if (unlikely(dx_buff->is_sop)) {
 608                                 dma_unmap_single(aq_nic_get_dev(self),
 609                                                  dx_buff->pa,
 610                                                  dx_buff->len,
 611                                                  DMA_TO_DEVICE);
 612                         } else {
 613                                 dma_unmap_page(aq_nic_get_dev(self),
 614                                                dx_buff->pa,
 615                                                dx_buff->len,
 616                                                DMA_TO_DEVICE);
 617                         }
 618                 }
 619         }
 620
 621 exit:
 622         return ret;
 623 }
 624
 625 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
 626 {
 627         unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
 628         struct aq_ring_s *ring = NULL;
 629         unsigned int frags = 0U;
 630         int err = NETDEV_TX_OK;
 631         unsigned int tc = 0U;
 632
 633         frags = skb_shinfo(skb)->nr_frags + 1;
 634
 635         ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
 636
 637         if (frags > AQ_CFG_SKB_FRAGS_MAX) {
 638                 dev_kfree_skb_any(skb);
 639                 goto err_exit;
 640         }
 641
 642         aq_ring_update_queue_state(ring);
 643
 644         if (self->aq_nic_cfg.priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET)) {
 645                 err = NETDEV_TX_BUSY;
 646                 goto err_exit;
 647         }
 648
 649         /* Above status update may stop the queue. Check this. */
 650         if (__netif_subqueue_stopped(self->ndev, ring->idx)) {
 651                 err = NETDEV_TX_BUSY;
 652                 goto err_exit;
 653         }
 654
 655         frags = aq_nic_map_skb(self, skb, ring);
 656
 657         if (likely(frags)) {
 658                 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
 659                                                        ring, frags);
 660         } else {
 661                 err = NETDEV_TX_BUSY;
 662         }
 663
 664 err_exit:
 665         return err;
 666 }
 667
 668 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
 669 {
 670         return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
 671 }
 672
 673 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
 674 {
 675         int err = 0;
 676
 677         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
 678         if (err < 0)
 679                 goto err_exit;
 680
 681         self->packet_filter = flags;
 682
 683 err_exit:
 684         return err;
 685 }
 686
 687 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
 688 {
 689         const struct aq_hw_ops *hw_ops = self->aq_hw_ops;
 690         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
 691         unsigned int packet_filter = ndev->flags;
 692         struct netdev_hw_addr *ha = NULL;
 693         unsigned int i = 0U;
 694         int err = 0;
 695
 696         self->mc_list.count = 0;
 697         if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
 698                 packet_filter |= IFF_PROMISC;
 699         } else {
 700                 netdev_for_each_uc_addr(ha, ndev) {
 701                         ether_addr_copy(self->mc_list.ar[i++], ha->addr);
 702                 }
 703         }
 704
 705         cfg->is_mc_list_enabled = !!(packet_filter & IFF_MULTICAST);
 706         if (cfg->is_mc_list_enabled) {
 707                 if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
 708                         packet_filter |= IFF_ALLMULTI;
 709                 } else {
 710                         netdev_for_each_mc_addr(ha, ndev) {
 711                                 ether_addr_copy(self->mc_list.ar[i++],
 712                                                 ha->addr);
 713                         }
 714                 }
 715         }
 716
 717         if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
 718                 self->mc_list.count = i;
 719                 err = hw_ops->hw_multicast_list_set(self->aq_hw,
 720                                                     self->mc_list.ar,
 721                                                     self->mc_list.count);
 722                 if (err < 0)
 723                         return err;
 724         }
 725
 726         return aq_nic_set_packet_filter(self, packet_filter);
 727 }
 728
 729 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
 730 {
 731         self->aq_nic_cfg.mtu = new_mtu;
 732
 733         return 0;
 734 }
 735
 736 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
 737 {
 738         return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
 739 }
 740
 741 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
 742 {
 743         return self->link_status.mbps;
 744 }
 745
 746 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
 747 {
 748         u32 *regs_buff = p;
 749         int err = 0;
 750
 751         regs->version = 1;
 752
 753         err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
 754                                            self->aq_nic_cfg.aq_hw_caps,
 755                                            regs_buff);
 756         if (err < 0)
 757                 goto err_exit;
 758
 759 err_exit:
 760         return err;
 761 }
 762
 763 int aq_nic_get_regs_count(struct aq_nic_s *self)
 764 {
 765         return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
 766 }
 767
 768 void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
 769 {
 770         struct aq_vec_s *aq_vec = NULL;
 771         struct aq_stats_s *stats;
 772         unsigned int count = 0U;
 773         unsigned int i = 0U;
 774
 775         if (self->aq_fw_ops->update_stats) {
 776                 mutex_lock(&self->fwreq_mutex);
 777                 self->aq_fw_ops->update_stats(self->aq_hw);
 778                 mutex_unlock(&self->fwreq_mutex);
 779         }
 780         stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 781
 782         if (!stats)
 783                 goto err_exit;
 784
 785         data[i] = stats->uprc + stats->mprc + stats->bprc;
 786         data[++i] = stats->uprc;
 787         data[++i] = stats->mprc;
 788         data[++i] = stats->bprc;
 789         data[++i] = stats->erpt;
 790         data[++i] = stats->uptc + stats->mptc + stats->bptc;
 791         data[++i] = stats->uptc;
 792         data[++i] = stats->mptc;
 793         data[++i] = stats->bptc;
 794         data[++i] = stats->ubrc;
 795         data[++i] = stats->ubtc;
 796         data[++i] = stats->mbrc;
 797         data[++i] = stats->mbtc;
 798         data[++i] = stats->bbrc;
 799         data[++i] = stats->bbtc;
 800         data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
 801         data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
 802         data[++i] = stats->dma_pkt_rc;
 803         data[++i] = stats->dma_pkt_tc;
 804         data[++i] = stats->dma_oct_rc;
 805         data[++i] = stats->dma_oct_tc;
 806         data[++i] = stats->dpc;
 807
 808         i++;
 809
 810         data += i;
 811
 812         for (i = 0U, aq_vec = self->aq_vec[0];
 813                 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 814                 data += count;
 815                 aq_vec_get_sw_stats(aq_vec, data, &count);
 816         }
 817
 818 err_exit:;
 819 }
 820
 821 static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
 822 {
 823         struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 824         struct net_device *ndev = self->ndev;
 825
 826         ndev->stats.rx_packets = stats->dma_pkt_rc;
 827         ndev->stats.rx_bytes = stats->dma_oct_rc;
 828         ndev->stats.rx_errors = stats->erpr;
 829         ndev->stats.rx_dropped = stats->dpc;
 830         ndev->stats.tx_packets = stats->dma_pkt_tc;
 831         ndev->stats.tx_bytes = stats->dma_oct_tc;
 832         ndev->stats.tx_errors = stats->erpt;
 833         ndev->stats.multicast = stats->mprc;
 834 }
 835
 836 void aq_nic_get_link_ksettings(struct aq_nic_s *self,
 837                                struct ethtool_link_ksettings *cmd)
 838 {
 839         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 840                 cmd->base.port = PORT_FIBRE;
 841         else
 842                 cmd->base.port = PORT_TP;
 843         /* This driver supports only 10G capable adapters, so DUPLEX_FULL */
 844         cmd->base.duplex = DUPLEX_FULL;
 845         cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
 846
 847         ethtool_link_ksettings_zero_link_mode(cmd, supported);
 848
 849         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
 850                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 851                                                      10000baseT_Full);
 852
 853         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
 854                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 855                                                      5000baseT_Full);
 856
 857         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS)
 858                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 859                                                      2500baseT_Full);
 860
 861         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
 862                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 863                                                      1000baseT_Full);
 864
 865         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
 866                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 867                                                      100baseT_Full);
 868
 869         if (self->aq_nic_cfg.aq_hw_caps->flow_control) {
 870                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 871                                                      Pause);
 872                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 873                                                      Asym_Pause);
 874         }
 875
 876         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
 877
 878         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 879                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 880         else
 881                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 882
 883         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
 884
 885         if (self->aq_nic_cfg.is_autoneg)
 886                 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
 887
 888         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_10G)
 889                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 890                                                      10000baseT_Full);
 891
 892         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_5G)
 893                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 894                                                      5000baseT_Full);
 895
 896         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_2GS)
 897                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 898                                                      2500baseT_Full);
 899
 900         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_1G)
 901                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 902                                                      1000baseT_Full);
 903
 904         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_100M)
 905                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 906                                                      100baseT_Full);
 907
 908         if (self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX)
 909                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 910                                                      Pause);
 911
 912         /* Asym is when either RX or TX, but not both */
 913         if (!!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_TX) ^
 914             !!(self->aq_nic_cfg.fc.cur & AQ_NIC_FC_RX))
 915                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 916                                                      Asym_Pause);
 917
 918         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 919                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 920         else
 921                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 922 }
 923
 924 int aq_nic_set_link_ksettings(struct aq_nic_s *self,
 925                               const struct ethtool_link_ksettings *cmd)
 926 {
 927         u32 speed = 0U;
 928         u32 rate = 0U;
 929         int err = 0;
 930
 931         if (cmd->base.autoneg == AUTONEG_ENABLE) {
 932                 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
 933                 self->aq_nic_cfg.is_autoneg = true;
 934         } else {
 935                 speed = cmd->base.speed;
 936
 937                 switch (speed) {
 938                 case SPEED_100:
 939                         rate = AQ_NIC_RATE_100M;
 940                         break;
 941
 942                 case SPEED_1000:
 943                         rate = AQ_NIC_RATE_1G;
 944                         break;
 945
 946                 case SPEED_2500:
 947                         rate = AQ_NIC_RATE_2GS;
 948                         break;
 949
 950                 case SPEED_5000:
 951                         rate = AQ_NIC_RATE_5G;
 952                         break;
 953
 954                 case SPEED_10000:
 955                         rate = AQ_NIC_RATE_10G;
 956                         break;
 957
 958                 default:
 959                         err = -1;
 960                         goto err_exit;
 961                 break;
 962                 }
 963                 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
 964                         err = -1;
 965                         goto err_exit;
 966                 }
 967
 968                 self->aq_nic_cfg.is_autoneg = false;
 969         }
 970
 971         mutex_lock(&self->fwreq_mutex);
 972         err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
 973         mutex_unlock(&self->fwreq_mutex);
 974         if (err < 0)
 975                 goto err_exit;
 976
 977         self->aq_nic_cfg.link_speed_msk = rate;
 978
 979 err_exit:
 980         return err;
 981 }
 982
 983 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
 984 {
 985         return &self->aq_nic_cfg;
 986 }
 987
 988 u32 aq_nic_get_fw_version(struct aq_nic_s *self)
 989 {
 990         u32 fw_version = 0U;
 991
 992         self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version);
 993
 994         return fw_version;
 995 }
 996
 997 int aq_nic_set_loopback(struct aq_nic_s *self)
 998 {
 999         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
1000
1001         if (!self->aq_hw_ops->hw_set_loopback ||
1002             !self->aq_fw_ops->set_phyloopback)
1003                 return -ENOTSUPP;
1004
1005         mutex_lock(&self->fwreq_mutex);
1006         self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1007                                          AQ_HW_LOOPBACK_DMA_SYS,
1008                                          !!(cfg->priv_flags &
1009                                             BIT(AQ_HW_LOOPBACK_DMA_SYS)));
1010
1011         self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1012                                          AQ_HW_LOOPBACK_PKT_SYS,
1013                                          !!(cfg->priv_flags &
1014                                             BIT(AQ_HW_LOOPBACK_PKT_SYS)));
1015
1016         self->aq_hw_ops->hw_set_loopback(self->aq_hw,
1017                                          AQ_HW_LOOPBACK_DMA_NET,
1018                                          !!(cfg->priv_flags &
1019                                             BIT(AQ_HW_LOOPBACK_DMA_NET)));
1020
1021         self->aq_fw_ops->set_phyloopback(self->aq_hw,
1022                                          AQ_HW_LOOPBACK_PHYINT_SYS,
1023                                          !!(cfg->priv_flags &
1024                                             BIT(AQ_HW_LOOPBACK_PHYINT_SYS)));
1025
1026         self->aq_fw_ops->set_phyloopback(self->aq_hw,
1027                                          AQ_HW_LOOPBACK_PHYEXT_SYS,
1028                                          !!(cfg->priv_flags &
1029                                             BIT(AQ_HW_LOOPBACK_PHYEXT_SYS)));
1030         mutex_unlock(&self->fwreq_mutex);
1031
1032         return 0;
1033 }
1034
1035 int aq_nic_stop(struct aq_nic_s *self)
1036 {
1037         struct aq_vec_s *aq_vec = NULL;
1038         unsigned int i = 0U;
1039
1040         netif_tx_disable(self->ndev);
1041         netif_carrier_off(self->ndev);
1042
1043         del_timer_sync(&self->service_timer);
1044         cancel_work_sync(&self->service_task);
1045
1046         self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
1047
1048         if (self->aq_nic_cfg.is_polling)
1049                 del_timer_sync(&self->polling_timer);
1050         else
1051                 aq_pci_func_free_irqs(self);
1052
1053         aq_ptp_irq_free(self);
1054
1055         for (i = 0U, aq_vec = self->aq_vec[0];
1056                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
1057                 aq_vec_stop(aq_vec);
1058
1059         aq_ptp_ring_stop(self);
1060
1061         return self->aq_hw_ops->hw_stop(self->aq_hw);
1062 }
1063
1064 void aq_nic_set_power(struct aq_nic_s *self)
1065 {
1066         if (self->power_state != AQ_HW_POWER_STATE_D0 ||
1067             self->aq_hw->aq_nic_cfg->wol)
1068                 if (likely(self->aq_fw_ops->set_power)) {
1069                         mutex_lock(&self->fwreq_mutex);
1070                         self->aq_fw_ops->set_power(self->aq_hw,
1071                                                    self->power_state,
1072                                                    self->ndev->dev_addr);
1073                         mutex_unlock(&self->fwreq_mutex);
1074                 }
1075 }
1076
1077 void aq_nic_deinit(struct aq_nic_s *self, bool link_down)
1078 {
1079         struct aq_vec_s *aq_vec = NULL;
1080         unsigned int i = 0U;
1081
1082         if (!self)
1083                 goto err_exit;
1084
1085         for (i = 0U, aq_vec = self->aq_vec[0];
1086                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
1087                 aq_vec_deinit(aq_vec);
1088
1089         aq_ptp_unregister(self);
1090         aq_ptp_ring_deinit(self);
1091         aq_ptp_ring_free(self);
1092         aq_ptp_free(self);
1093
1094         if (likely(self->aq_fw_ops->deinit) && link_down) {
1095                 mutex_lock(&self->fwreq_mutex);
1096                 self->aq_fw_ops->deinit(self->aq_hw);
1097                 mutex_unlock(&self->fwreq_mutex);
1098         }
1099
1100 err_exit:;
1101 }
1102
1103 void aq_nic_free_vectors(struct aq_nic_s *self)
1104 {
1105         unsigned int i = 0U;
1106
1107         if (!self)
1108                 goto err_exit;
1109
1110         for (i = ARRAY_SIZE(self->aq_vec); i--;) {
1111                 if (self->aq_vec[i]) {
1112                         aq_vec_free(self->aq_vec[i]);
1113                         self->aq_vec[i] = NULL;
1114                 }
1115         }
1116
1117 err_exit:;
1118 }
1119
1120 void aq_nic_shutdown(struct aq_nic_s *self)
1121 {
1122         int err = 0;
1123
1124         if (!self->ndev)
1125                 return;
1126
1127         rtnl_lock();
1128
1129         netif_device_detach(self->ndev);
1130
1131         if (netif_running(self->ndev)) {
1132                 err = aq_nic_stop(self);
1133                 if (err < 0)
1134                         goto err_exit;
1135         }
1136         aq_nic_deinit(self, !self->aq_hw->aq_nic_cfg->wol);
1137         aq_nic_set_power(self);
1138
1139 err_exit:
1140         rtnl_unlock();
1141 }
1142
1143 u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type)
1144 {
1145         u8 location = 0xFF;
1146         u32 fltr_cnt;
1147         u32 n_bit;
1148
1149         switch (type) {
1150         case aq_rx_filter_ethertype:
1151                 location = AQ_RX_LAST_LOC_FETHERT - AQ_RX_FIRST_LOC_FETHERT -
1152                            self->aq_hw_rx_fltrs.fet_reserved_count;
1153                 self->aq_hw_rx_fltrs.fet_reserved_count++;
1154                 break;
1155         case aq_rx_filter_l3l4:
1156                 fltr_cnt = AQ_RX_LAST_LOC_FL3L4 - AQ_RX_FIRST_LOC_FL3L4;
1157                 n_bit = fltr_cnt - self->aq_hw_rx_fltrs.fl3l4.reserved_count;
1158
1159                 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 |= BIT(n_bit);
1160                 self->aq_hw_rx_fltrs.fl3l4.reserved_count++;
1161                 location = n_bit;
1162                 break;
1163         default:
1164                 break;
1165         }
1166
1167         return location;
1168 }
1169
1170 void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type,
1171                            u32 location)
1172 {
1173         switch (type) {
1174         case aq_rx_filter_ethertype:
1175                 self->aq_hw_rx_fltrs.fet_reserved_count--;
1176                 break;
1177         case aq_rx_filter_l3l4:
1178                 self->aq_hw_rx_fltrs.fl3l4.reserved_count--;
1179                 self->aq_hw_rx_fltrs.fl3l4.active_ipv4 &= ~BIT(location);
1180                 break;
1181         default:
1182                 break;
1183         }
1184 }