drivers/net/ethernet/qlogic/qede/qede_main.c

   1 /* QLogic qede NIC Driver
   2 * Copyright (c) 2015 QLogic Corporation
   3 *
   4 * This software is available under the terms of the GNU General Public License
   5 * (GPL) Version 2, available from the file COPYING in the main directory of
   6 * this source tree.
   7 */
   8
   9 #include <linux/module.h>
  10 #include <linux/pci.h>
  11 #include <linux/version.h>
  12 #include <linux/device.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/skbuff.h>
  16 #include <linux/errno.h>
  17 #include <linux/list.h>
  18 #include <linux/string.h>
  19 #include <linux/dma-mapping.h>
  20 #include <linux/interrupt.h>
  21 #include <asm/byteorder.h>
  22 #include <asm/param.h>
  23 #include <linux/io.h>
  24 #include <linux/netdev_features.h>
  25 #include <linux/udp.h>
  26 #include <linux/tcp.h>
  27 #ifdef CONFIG_QEDE_VXLAN
  28 #include <net/vxlan.h>
  29 #endif
  30 #ifdef CONFIG_QEDE_GENEVE
  31 #include <net/geneve.h>
  32 #endif
  33 #include <linux/ip.h>
  34 #include <net/ipv6.h>
  35 #include <net/tcp.h>
  36 #include <linux/if_ether.h>
  37 #include <linux/if_vlan.h>
  38 #include <linux/pkt_sched.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/in.h>
  41 #include <linux/random.h>
  42 #include <net/ip6_checksum.h>
  43 #include <linux/bitops.h>
  44
  45 #include "qede.h"
  46
  47 static char version[] =
  48         "QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
  49
  50 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
  51 MODULE_LICENSE("GPL");
  52 MODULE_VERSION(DRV_MODULE_VERSION);
  53
  54 static uint debug;
  55 module_param(debug, uint, 0);
  56 MODULE_PARM_DESC(debug, " Default debug msglevel");
  57
  58 static const struct qed_eth_ops *qed_ops;
  59
  60 #define CHIP_NUM_57980S_40              0x1634
  61 #define CHIP_NUM_57980S_10              0x1666
  62 #define CHIP_NUM_57980S_MF              0x1636
  63 #define CHIP_NUM_57980S_100             0x1644
  64 #define CHIP_NUM_57980S_50              0x1654
  65 #define CHIP_NUM_57980S_25              0x1656
  66 #define CHIP_NUM_57980S_IOV             0x1664
  67
  68 #ifndef PCI_DEVICE_ID_NX2_57980E
  69 #define PCI_DEVICE_ID_57980S_40         CHIP_NUM_57980S_40
  70 #define PCI_DEVICE_ID_57980S_10         CHIP_NUM_57980S_10
  71 #define PCI_DEVICE_ID_57980S_MF         CHIP_NUM_57980S_MF
  72 #define PCI_DEVICE_ID_57980S_100        CHIP_NUM_57980S_100
  73 #define PCI_DEVICE_ID_57980S_50         CHIP_NUM_57980S_50
  74 #define PCI_DEVICE_ID_57980S_25         CHIP_NUM_57980S_25
  75 #define PCI_DEVICE_ID_57980S_IOV        CHIP_NUM_57980S_IOV
  76 #endif
  77
  78 enum qede_pci_private {
  79         QEDE_PRIVATE_PF,
  80         QEDE_PRIVATE_VF
  81 };
  82
  83 static const struct pci_device_id qede_pci_tbl[] = {
  84         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
  85         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
  86         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
  87         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
  88         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
  89         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
  90         {PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
  91         { 0 }
  92 };
  93
  94 MODULE_DEVICE_TABLE(pci, qede_pci_tbl);
  95
  96 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  97
  98 #define TX_TIMEOUT              (5 * HZ)
  99
 100 static void qede_remove(struct pci_dev *pdev);
 101 static int qede_alloc_rx_buffer(struct qede_dev *edev,
 102                                 struct qede_rx_queue *rxq);
 103 static void qede_link_update(void *dev, struct qed_link_output *link);
 104
 105 #ifdef CONFIG_QED_SRIOV
 106 static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos)
 107 {
 108         struct qede_dev *edev = netdev_priv(ndev);
 109
 110         if (vlan > 4095) {
 111                 DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
 112                 return -EINVAL;
 113         }
 114
 115         DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
 116                    vlan, vf);
 117
 118         return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
 119 }
 120
 121 static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
 122 {
 123         struct qede_dev *edev = netdev_priv(ndev);
 124
 125         DP_VERBOSE(edev, QED_MSG_IOV,
 126                    "Setting MAC %02x:%02x:%02x:%02x:%02x:%02x to VF [%d]\n",
 127                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], vfidx);
 128
 129         if (!is_valid_ether_addr(mac)) {
 130                 DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
 131                 return -EINVAL;
 132         }
 133
 134         return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
 135 }
 136
 137 static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
 138 {
 139         struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
 140         struct qed_dev_info *qed_info = &edev->dev_info.common;
 141         int rc;
 142
 143         DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);
 144
 145         rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);
 146
 147         /* Enable/Disable Tx switching for PF */
 148         if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
 149             qed_info->mf_mode != QED_MF_NPAR && qed_info->tx_switching) {
 150                 struct qed_update_vport_params params;
 151
 152                 memset(&params, 0, sizeof(params));
 153                 params.vport_id = 0;
 154                 params.update_tx_switching_flg = 1;
 155                 params.tx_switching_flg = num_vfs_param ? 1 : 0;
 156                 edev->ops->vport_update(edev->cdev, &params);
 157         }
 158
 159         return rc;
 160 }
 161 #endif
 162
 163 static struct pci_driver qede_pci_driver = {
 164         .name = "qede",
 165         .id_table = qede_pci_tbl,
 166         .probe = qede_probe,
 167         .remove = qede_remove,
 168 #ifdef CONFIG_QED_SRIOV
 169         .sriov_configure = qede_sriov_configure,
 170 #endif
 171 };
 172
 173 static void qede_force_mac(void *dev, u8 *mac)
 174 {
 175         struct qede_dev *edev = dev;
 176
 177         ether_addr_copy(edev->ndev->dev_addr, mac);
 178         ether_addr_copy(edev->primary_mac, mac);
 179 }
 180
 181 static struct qed_eth_cb_ops qede_ll_ops = {
 182         {
 183                 .link_update = qede_link_update,
 184         },
 185         .force_mac = qede_force_mac,
 186 };
 187
 188 static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 189                              void *ptr)
 190 {
 191         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 192         struct ethtool_drvinfo drvinfo;
 193         struct qede_dev *edev;
 194
 195         /* Currently only support name change */
 196         if (event != NETDEV_CHANGENAME)
 197                 goto done;
 198
 199         /* Check whether this is a qede device */
 200         if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
 201                 goto done;
 202
 203         memset(&drvinfo, 0, sizeof(drvinfo));
 204         ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
 205         if (strcmp(drvinfo.driver, "qede"))
 206                 goto done;
 207         edev = netdev_priv(ndev);
 208
 209         /* Notify qed of the name change */
 210         if (!edev->ops || !edev->ops->common)
 211                 goto done;
 212         edev->ops->common->set_id(edev->cdev, edev->ndev->name,
 213                                   "qede");
 214
 215 done:
 216         return NOTIFY_DONE;
 217 }
 218
 219 static struct notifier_block qede_netdev_notifier = {
 220         .notifier_call = qede_netdev_event,
 221 };
 222
 223 static
 224 int __init qede_init(void)
 225 {
 226         int ret;
 227
 228         pr_notice("qede_init: %s\n", version);
 229
 230         qed_ops = qed_get_eth_ops();
 231         if (!qed_ops) {
 232                 pr_notice("Failed to get qed ethtool operations\n");
 233                 return -EINVAL;
 234         }
 235
 236         /* Must register notifier before pci ops, since we might miss
 237          * interface rename after pci probe and netdev registeration.
 238          */
 239         ret = register_netdevice_notifier(&qede_netdev_notifier);
 240         if (ret) {
 241                 pr_notice("Failed to register netdevice_notifier\n");
 242                 qed_put_eth_ops();
 243                 return -EINVAL;
 244         }
 245
 246         ret = pci_register_driver(&qede_pci_driver);
 247         if (ret) {
 248                 pr_notice("Failed to register driver\n");
 249                 unregister_netdevice_notifier(&qede_netdev_notifier);
 250                 qed_put_eth_ops();
 251                 return -EINVAL;
 252         }
 253
 254         return 0;
 255 }
 256
 257 static void __exit qede_cleanup(void)
 258 {
 259         pr_notice("qede_cleanup called\n");
 260
 261         unregister_netdevice_notifier(&qede_netdev_notifier);
 262         pci_unregister_driver(&qede_pci_driver);
 263         qed_put_eth_ops();
 264 }
 265
 266 module_init(qede_init);
 267 module_exit(qede_cleanup);
 268
 269 /* -------------------------------------------------------------------------
 270  * START OF FAST-PATH
 271  * -------------------------------------------------------------------------
 272  */
 273
 274 /* Unmap the data and free skb */
 275 static int qede_free_tx_pkt(struct qede_dev *edev,
 276                             struct qede_tx_queue *txq,
 277                             int *len)
 278 {
 279         u16 idx = txq->sw_tx_cons & NUM_TX_BDS_MAX;
 280         struct sk_buff *skb = txq->sw_tx_ring[idx].skb;
 281         struct eth_tx_1st_bd *first_bd;
 282         struct eth_tx_bd *tx_data_bd;
 283         int bds_consumed = 0;
 284         int nbds;
 285         bool data_split = txq->sw_tx_ring[idx].flags & QEDE_TSO_SPLIT_BD;
 286         int i, split_bd_len = 0;
 287
 288         if (unlikely(!skb)) {
 289                 DP_ERR(edev,
 290                        "skb is null for txq idx=%d txq->sw_tx_cons=%d txq->sw_tx_prod=%d\n",
 291                        idx, txq->sw_tx_cons, txq->sw_tx_prod);
 292                 return -1;
 293         }
 294
 295         *len = skb->len;
 296
 297         first_bd = (struct eth_tx_1st_bd *)qed_chain_consume(&txq->tx_pbl);
 298
 299         bds_consumed++;
 300
 301         nbds = first_bd->data.nbds;
 302
 303         if (data_split) {
 304                 struct eth_tx_bd *split = (struct eth_tx_bd *)
 305                         qed_chain_consume(&txq->tx_pbl);
 306                 split_bd_len = BD_UNMAP_LEN(split);
 307                 bds_consumed++;
 308         }
 309         dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
 310                        BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
 311
 312         /* Unmap the data of the skb frags */
 313         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, bds_consumed++) {
 314                 tx_data_bd = (struct eth_tx_bd *)
 315                         qed_chain_consume(&txq->tx_pbl);
 316                 dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
 317                                BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
 318         }
 319
 320         while (bds_consumed++ < nbds)
 321                 qed_chain_consume(&txq->tx_pbl);
 322
 323         /* Free skb */
 324         dev_kfree_skb_any(skb);
 325         txq->sw_tx_ring[idx].skb = NULL;
 326         txq->sw_tx_ring[idx].flags = 0;
 327
 328         return 0;
 329 }
 330
 331 /* Unmap the data and free skb when mapping failed during start_xmit */
 332 static void qede_free_failed_tx_pkt(struct qede_dev *edev,
 333                                     struct qede_tx_queue *txq,
 334                                     struct eth_tx_1st_bd *first_bd,
 335                                     int nbd,
 336                                     bool data_split)
 337 {
 338         u16 idx = txq->sw_tx_prod & NUM_TX_BDS_MAX;
 339         struct sk_buff *skb = txq->sw_tx_ring[idx].skb;
 340         struct eth_tx_bd *tx_data_bd;
 341         int i, split_bd_len = 0;
 342
 343         /* Return prod to its position before this skb was handled */
 344         qed_chain_set_prod(&txq->tx_pbl,
 345                            le16_to_cpu(txq->tx_db.data.bd_prod),
 346                            first_bd);
 347
 348         first_bd = (struct eth_tx_1st_bd *)qed_chain_produce(&txq->tx_pbl);
 349
 350         if (data_split) {
 351                 struct eth_tx_bd *split = (struct eth_tx_bd *)
 352                                           qed_chain_produce(&txq->tx_pbl);
 353                 split_bd_len = BD_UNMAP_LEN(split);
 354                 nbd--;
 355         }
 356
 357         dma_unmap_page(&edev->pdev->dev, BD_UNMAP_ADDR(first_bd),
 358                        BD_UNMAP_LEN(first_bd) + split_bd_len, DMA_TO_DEVICE);
 359
 360         /* Unmap the data of the skb frags */
 361         for (i = 0; i < nbd; i++) {
 362                 tx_data_bd = (struct eth_tx_bd *)
 363                         qed_chain_produce(&txq->tx_pbl);
 364                 if (tx_data_bd->nbytes)
 365                         dma_unmap_page(&edev->pdev->dev,
 366                                        BD_UNMAP_ADDR(tx_data_bd),
 367                                        BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
 368         }
 369
 370         /* Return again prod to its position before this skb was handled */
 371         qed_chain_set_prod(&txq->tx_pbl,
 372                            le16_to_cpu(txq->tx_db.data.bd_prod),
 373                            first_bd);
 374
 375         /* Free skb */
 376         dev_kfree_skb_any(skb);
 377         txq->sw_tx_ring[idx].skb = NULL;
 378         txq->sw_tx_ring[idx].flags = 0;
 379 }
 380
 381 static u32 qede_xmit_type(struct qede_dev *edev,
 382                           struct sk_buff *skb,
 383                           int *ipv6_ext)
 384 {
 385         u32 rc = XMIT_L4_CSUM;
 386         __be16 l3_proto;
 387
 388         if (skb->ip_summed != CHECKSUM_PARTIAL)
 389                 return XMIT_PLAIN;
 390
 391         l3_proto = vlan_get_protocol(skb);
 392         if (l3_proto == htons(ETH_P_IPV6) &&
 393             (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
 394                 *ipv6_ext = 1;
 395
 396         if (skb->encapsulation)
 397                 rc |= XMIT_ENC;
 398
 399         if (skb_is_gso(skb))
 400                 rc |= XMIT_LSO;
 401
 402         return rc;
 403 }
 404
 405 static void qede_set_params_for_ipv6_ext(struct sk_buff *skb,
 406                                          struct eth_tx_2nd_bd *second_bd,
 407                                          struct eth_tx_3rd_bd *third_bd)
 408 {
 409         u8 l4_proto;
 410         u16 bd2_bits1 = 0, bd2_bits2 = 0;
 411
 412         bd2_bits1 |= (1 << ETH_TX_DATA_2ND_BD_IPV6_EXT_SHIFT);
 413
 414         bd2_bits2 |= ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) &
 415                      ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_MASK)
 416                     << ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_SHIFT;
 417
 418         bd2_bits1 |= (ETH_L4_PSEUDO_CSUM_CORRECT_LENGTH <<
 419                       ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_SHIFT);
 420
 421         if (vlan_get_protocol(skb) == htons(ETH_P_IPV6))
 422                 l4_proto = ipv6_hdr(skb)->nexthdr;
 423         else
 424                 l4_proto = ip_hdr(skb)->protocol;
 425
 426         if (l4_proto == IPPROTO_UDP)
 427                 bd2_bits1 |= 1 << ETH_TX_DATA_2ND_BD_L4_UDP_SHIFT;
 428
 429         if (third_bd)
 430                 third_bd->data.bitfields |=
 431                         cpu_to_le16(((tcp_hdrlen(skb) / 4) &
 432                                 ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_MASK) <<
 433                                 ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_SHIFT);
 434
 435         second_bd->data.bitfields1 = cpu_to_le16(bd2_bits1);
 436         second_bd->data.bitfields2 = cpu_to_le16(bd2_bits2);
 437 }
 438
 439 static int map_frag_to_bd(struct qede_dev *edev,
 440                           skb_frag_t *frag,
 441                           struct eth_tx_bd *bd)
 442 {
 443         dma_addr_t mapping;
 444
 445         /* Map skb non-linear frag data for DMA */
 446         mapping = skb_frag_dma_map(&edev->pdev->dev, frag, 0,
 447                                    skb_frag_size(frag),
 448                                    DMA_TO_DEVICE);
 449         if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
 450                 DP_NOTICE(edev, "Unable to map frag - dropping packet\n");
 451                 return -ENOMEM;
 452         }
 453
 454         /* Setup the data pointer of the frag data */
 455         BD_SET_UNMAP_ADDR_LEN(bd, mapping, skb_frag_size(frag));
 456
 457         return 0;
 458 }
 459
 460 static u16 qede_get_skb_hlen(struct sk_buff *skb, bool is_encap_pkt)
 461 {
 462         if (is_encap_pkt)
 463                 return (skb_inner_transport_header(skb) +
 464                         inner_tcp_hdrlen(skb) - skb->data);
 465         else
 466                 return (skb_transport_header(skb) +
 467                         tcp_hdrlen(skb) - skb->data);
 468 }
 469
 470 /* +2 for 1st BD for headers and 2nd BD for headlen (if required) */
 471 #if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET)
 472 static bool qede_pkt_req_lin(struct qede_dev *edev, struct sk_buff *skb,
 473                              u8 xmit_type)
 474 {
 475         int allowed_frags = ETH_TX_MAX_BDS_PER_NON_LSO_PACKET - 1;
 476
 477         if (xmit_type & XMIT_LSO) {
 478                 int hlen;
 479
 480                 hlen = qede_get_skb_hlen(skb, xmit_type & XMIT_ENC);
 481
 482                 /* linear payload would require its own BD */
 483                 if (skb_headlen(skb) > hlen)
 484                         allowed_frags--;
 485         }
 486
 487         return (skb_shinfo(skb)->nr_frags > allowed_frags);
 488 }
 489 #endif
 490
 491 /* Main transmit function */
 492 static
 493 netdev_tx_t qede_start_xmit(struct sk_buff *skb,
 494                             struct net_device *ndev)
 495 {
 496         struct qede_dev *edev = netdev_priv(ndev);
 497         struct netdev_queue *netdev_txq;
 498         struct qede_tx_queue *txq;
 499         struct eth_tx_1st_bd *first_bd;
 500         struct eth_tx_2nd_bd *second_bd = NULL;
 501         struct eth_tx_3rd_bd *third_bd = NULL;
 502         struct eth_tx_bd *tx_data_bd = NULL;
 503         u16 txq_index;
 504         u8 nbd = 0;
 505         dma_addr_t mapping;
 506         int rc, frag_idx = 0, ipv6_ext = 0;
 507         u8 xmit_type;
 508         u16 idx;
 509         u16 hlen;
 510         bool data_split = false;
 511
 512         /* Get tx-queue context and netdev index */
 513         txq_index = skb_get_queue_mapping(skb);
 514         WARN_ON(txq_index >= QEDE_TSS_CNT(edev));
 515         txq = QEDE_TX_QUEUE(edev, txq_index);
 516         netdev_txq = netdev_get_tx_queue(ndev, txq_index);
 517
 518         WARN_ON(qed_chain_get_elem_left(&txq->tx_pbl) <
 519                                (MAX_SKB_FRAGS + 1));
 520
 521         xmit_type = qede_xmit_type(edev, skb, &ipv6_ext);
 522
 523 #if ((MAX_SKB_FRAGS + 2) > ETH_TX_MAX_BDS_PER_NON_LSO_PACKET)
 524         if (qede_pkt_req_lin(edev, skb, xmit_type)) {
 525                 if (skb_linearize(skb)) {
 526                         DP_NOTICE(edev,
 527                                   "SKB linearization failed - silently dropping this SKB\n");
 528                         dev_kfree_skb_any(skb);
 529                         return NETDEV_TX_OK;
 530                 }
 531         }
 532 #endif
 533
 534         /* Fill the entry in the SW ring and the BDs in the FW ring */
 535         idx = txq->sw_tx_prod & NUM_TX_BDS_MAX;
 536         txq->sw_tx_ring[idx].skb = skb;
 537         first_bd = (struct eth_tx_1st_bd *)
 538                    qed_chain_produce(&txq->tx_pbl);
 539         memset(first_bd, 0, sizeof(*first_bd));
 540         first_bd->data.bd_flags.bitfields =
 541                 1 << ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT;
 542
 543         /* Map skb linear data for DMA and set in the first BD */
 544         mapping = dma_map_single(&edev->pdev->dev, skb->data,
 545                                  skb_headlen(skb), DMA_TO_DEVICE);
 546         if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
 547                 DP_NOTICE(edev, "SKB mapping failed\n");
 548                 qede_free_failed_tx_pkt(edev, txq, first_bd, 0, false);
 549                 return NETDEV_TX_OK;
 550         }
 551         nbd++;
 552         BD_SET_UNMAP_ADDR_LEN(first_bd, mapping, skb_headlen(skb));
 553
 554         /* In case there is IPv6 with extension headers or LSO we need 2nd and
 555          * 3rd BDs.
 556          */
 557         if (unlikely((xmit_type & XMIT_LSO) | ipv6_ext)) {
 558                 second_bd = (struct eth_tx_2nd_bd *)
 559                         qed_chain_produce(&txq->tx_pbl);
 560                 memset(second_bd, 0, sizeof(*second_bd));
 561
 562                 nbd++;
 563                 third_bd = (struct eth_tx_3rd_bd *)
 564                         qed_chain_produce(&txq->tx_pbl);
 565                 memset(third_bd, 0, sizeof(*third_bd));
 566
 567                 nbd++;
 568                 /* We need to fill in additional data in second_bd... */
 569                 tx_data_bd = (struct eth_tx_bd *)second_bd;
 570         }
 571
 572         if (skb_vlan_tag_present(skb)) {
 573                 first_bd->data.vlan = cpu_to_le16(skb_vlan_tag_get(skb));
 574                 first_bd->data.bd_flags.bitfields |=
 575                         1 << ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_SHIFT;
 576         }
 577
 578         /* Fill the parsing flags & params according to the requested offload */
 579         if (xmit_type & XMIT_L4_CSUM) {
 580                 u16 temp = 1 << ETH_TX_DATA_1ST_BD_TUNN_CFG_OVERRIDE_SHIFT;
 581
 582                 /* We don't re-calculate IP checksum as it is already done by
 583                  * the upper stack
 584                  */
 585                 first_bd->data.bd_flags.bitfields |=
 586                         1 << ETH_TX_1ST_BD_FLAGS_L4_CSUM_SHIFT;
 587
 588                 if (xmit_type & XMIT_ENC) {
 589                         first_bd->data.bd_flags.bitfields |=
 590                                 1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT;
 591                 } else {
 592                         /* In cases when OS doesn't indicate for inner offloads
 593                          * when packet is tunnelled, we need to override the HW
 594                          * tunnel configuration so that packets are treated as
 595                          * regular non tunnelled packets and no inner offloads
 596                          * are done by the hardware.
 597                          */
 598                         first_bd->data.bitfields |= cpu_to_le16(temp);
 599                 }
 600
 601                 /* If the packet is IPv6 with extension header, indicate that
 602                  * to FW and pass few params, since the device cracker doesn't
 603                  * support parsing IPv6 with extension header/s.
 604                  */
 605                 if (unlikely(ipv6_ext))
 606                         qede_set_params_for_ipv6_ext(skb, second_bd, third_bd);
 607         }
 608
 609         if (xmit_type & XMIT_LSO) {
 610                 first_bd->data.bd_flags.bitfields |=
 611                         (1 << ETH_TX_1ST_BD_FLAGS_LSO_SHIFT);
 612                 third_bd->data.lso_mss =
 613                         cpu_to_le16(skb_shinfo(skb)->gso_size);
 614
 615                 if (unlikely(xmit_type & XMIT_ENC)) {
 616                         first_bd->data.bd_flags.bitfields |=
 617                                 1 << ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_SHIFT;
 618                         hlen = qede_get_skb_hlen(skb, true);
 619                 } else {
 620                         first_bd->data.bd_flags.bitfields |=
 621                                 1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT;
 622                         hlen = qede_get_skb_hlen(skb, false);
 623                 }
 624
 625                 /* @@@TBD - if will not be removed need to check */
 626                 third_bd->data.bitfields |=
 627                         cpu_to_le16((1 << ETH_TX_DATA_3RD_BD_HDR_NBD_SHIFT));
 628
 629                 /* Make life easier for FW guys who can't deal with header and
 630                  * data on same BD. If we need to split, use the second bd...
 631                  */
 632                 if (unlikely(skb_headlen(skb) > hlen)) {
 633                         DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
 634                                    "TSO split header size is %d (%x:%x)\n",
 635                                    first_bd->nbytes, first_bd->addr.hi,
 636                                    first_bd->addr.lo);
 637
 638                         mapping = HILO_U64(le32_to_cpu(first_bd->addr.hi),
 639                                            le32_to_cpu(first_bd->addr.lo)) +
 640                                            hlen;
 641
 642                         BD_SET_UNMAP_ADDR_LEN(tx_data_bd, mapping,
 643                                               le16_to_cpu(first_bd->nbytes) -
 644                                               hlen);
 645
 646                         /* this marks the BD as one that has no
 647                          * individual mapping
 648                          */
 649                         txq->sw_tx_ring[idx].flags |= QEDE_TSO_SPLIT_BD;
 650
 651                         first_bd->nbytes = cpu_to_le16(hlen);
 652
 653                         tx_data_bd = (struct eth_tx_bd *)third_bd;
 654                         data_split = true;
 655                 }
 656         }
 657
 658         /* Handle fragmented skb */
 659         /* special handle for frags inside 2nd and 3rd bds.. */
 660         while (tx_data_bd && frag_idx < skb_shinfo(skb)->nr_frags) {
 661                 rc = map_frag_to_bd(edev,
 662                                     &skb_shinfo(skb)->frags[frag_idx],
 663                                     tx_data_bd);
 664                 if (rc) {
 665                         qede_free_failed_tx_pkt(edev, txq, first_bd, nbd,
 666                                                 data_split);
 667                         return NETDEV_TX_OK;
 668                 }
 669
 670                 if (tx_data_bd == (struct eth_tx_bd *)second_bd)
 671                         tx_data_bd = (struct eth_tx_bd *)third_bd;
 672                 else
 673                         tx_data_bd = NULL;
 674
 675                 frag_idx++;
 676         }
 677
 678         /* map last frags into 4th, 5th .... */
 679         for (; frag_idx < skb_shinfo(skb)->nr_frags; frag_idx++, nbd++) {
 680                 tx_data_bd = (struct eth_tx_bd *)
 681                              qed_chain_produce(&txq->tx_pbl);
 682
 683                 memset(tx_data_bd, 0, sizeof(*tx_data_bd));
 684
 685                 rc = map_frag_to_bd(edev,
 686                                     &skb_shinfo(skb)->frags[frag_idx],
 687                                     tx_data_bd);
 688                 if (rc) {
 689                         qede_free_failed_tx_pkt(edev, txq, first_bd, nbd,
 690                                                 data_split);
 691                         return NETDEV_TX_OK;
 692                 }
 693         }
 694
 695         /* update the first BD with the actual num BDs */
 696         first_bd->data.nbds = nbd;
 697
 698         netdev_tx_sent_queue(netdev_txq, skb->len);
 699
 700         skb_tx_timestamp(skb);
 701
 702         /* Advance packet producer only before sending the packet since mapping
 703          * of pages may fail.
 704          */
 705         txq->sw_tx_prod++;
 706
 707         /* 'next page' entries are counted in the producer value */
 708         txq->tx_db.data.bd_prod =
 709                 cpu_to_le16(qed_chain_get_prod_idx(&txq->tx_pbl));
 710
 711         /* wmb makes sure that the BDs data is updated before updating the
 712          * producer, otherwise FW may read old data from the BDs.
 713          */
 714         wmb();
 715         barrier();
 716         writel(txq->tx_db.raw, txq->doorbell_addr);
 717
 718         /* mmiowb is needed to synchronize doorbell writes from more than one
 719          * processor. It guarantees that the write arrives to the device before
 720          * the queue lock is released and another start_xmit is called (possibly
 721          * on another CPU). Without this barrier, the next doorbell can bypass
 722          * this doorbell. This is applicable to IA64/Altix systems.
 723          */
 724         mmiowb();
 725
 726         if (unlikely(qed_chain_get_elem_left(&txq->tx_pbl)
 727                       < (MAX_SKB_FRAGS + 1))) {
 728                 netif_tx_stop_queue(netdev_txq);
 729                 DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
 730                            "Stop queue was called\n");
 731                 /* paired memory barrier is in qede_tx_int(), we have to keep
 732                  * ordering of set_bit() in netif_tx_stop_queue() and read of
 733                  * fp->bd_tx_cons
 734                  */
 735                 smp_mb();
 736
 737                 if (qed_chain_get_elem_left(&txq->tx_pbl)
 738                      >= (MAX_SKB_FRAGS + 1) &&
 739                     (edev->state == QEDE_STATE_OPEN)) {
 740                         netif_tx_wake_queue(netdev_txq);
 741                         DP_VERBOSE(edev, NETIF_MSG_TX_QUEUED,
 742                                    "Wake queue was called\n");
 743                 }
 744         }
 745
 746         return NETDEV_TX_OK;
 747 }
 748
 749 int qede_txq_has_work(struct qede_tx_queue *txq)
 750 {
 751         u16 hw_bd_cons;
 752
 753         /* Tell compiler that consumer and producer can change */
 754         barrier();
 755         hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr);
 756         if (qed_chain_get_cons_idx(&txq->tx_pbl) == hw_bd_cons + 1)
 757                 return 0;
 758
 759         return hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl);
 760 }
 761
 762 static int qede_tx_int(struct qede_dev *edev,
 763                        struct qede_tx_queue *txq)
 764 {
 765         struct netdev_queue *netdev_txq;
 766         u16 hw_bd_cons;
 767         unsigned int pkts_compl = 0, bytes_compl = 0;
 768         int rc;
 769
 770         netdev_txq = netdev_get_tx_queue(edev->ndev, txq->index);
 771
 772         hw_bd_cons = le16_to_cpu(*txq->hw_cons_ptr);
 773         barrier();
 774
 775         while (hw_bd_cons != qed_chain_get_cons_idx(&txq->tx_pbl)) {
 776                 int len = 0;
 777
 778                 rc = qede_free_tx_pkt(edev, txq, &len);
 779                 if (rc) {
 780                         DP_NOTICE(edev, "hw_bd_cons = %d, chain_cons=%d\n",
 781                                   hw_bd_cons,
 782                                   qed_chain_get_cons_idx(&txq->tx_pbl));
 783                         break;
 784                 }
 785
 786                 bytes_compl += len;
 787                 pkts_compl++;
 788                 txq->sw_tx_cons++;
 789         }
 790
 791         netdev_tx_completed_queue(netdev_txq, pkts_compl, bytes_compl);
 792
 793         /* Need to make the tx_bd_cons update visible to start_xmit()
 794          * before checking for netif_tx_queue_stopped().  Without the
 795          * memory barrier, there is a small possibility that
 796          * start_xmit() will miss it and cause the queue to be stopped
 797          * forever.
 798          * On the other hand we need an rmb() here to ensure the proper
 799          * ordering of bit testing in the following
 800          * netif_tx_queue_stopped(txq) call.
 801          */
 802         smp_mb();
 803
 804         if (unlikely(netif_tx_queue_stopped(netdev_txq))) {
 805                 /* Taking tx_lock is needed to prevent reenabling the queue
 806                  * while it's empty. This could have happen if rx_action() gets
 807                  * suspended in qede_tx_int() after the condition before
 808                  * netif_tx_wake_queue(), while tx_action (qede_start_xmit()):
 809                  *
 810                  * stops the queue->sees fresh tx_bd_cons->releases the queue->
 811                  * sends some packets consuming the whole queue again->
 812                  * stops the queue
 813                  */
 814
 815                 __netif_tx_lock(netdev_txq, smp_processor_id());
 816
 817                 if ((netif_tx_queue_stopped(netdev_txq)) &&
 818                     (edev->state == QEDE_STATE_OPEN) &&
 819                     (qed_chain_get_elem_left(&txq->tx_pbl)
 820                       >= (MAX_SKB_FRAGS + 1))) {
 821                         netif_tx_wake_queue(netdev_txq);
 822                         DP_VERBOSE(edev, NETIF_MSG_TX_DONE,
 823                                    "Wake queue was called\n");
 824                 }
 825
 826                 __netif_tx_unlock(netdev_txq);
 827         }
 828
 829         return 0;
 830 }
 831
 832 bool qede_has_rx_work(struct qede_rx_queue *rxq)
 833 {
 834         u16 hw_comp_cons, sw_comp_cons;
 835
 836         /* Tell compiler that status block fields can change */
 837         barrier();
 838
 839         hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
 840         sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
 841
 842         return hw_comp_cons != sw_comp_cons;
 843 }
 844
 845 static bool qede_has_tx_work(struct qede_fastpath *fp)
 846 {
 847         u8 tc;
 848
 849         for (tc = 0; tc < fp->edev->num_tc; tc++)
 850                 if (qede_txq_has_work(&fp->txqs[tc]))
 851                         return true;
 852         return false;
 853 }
 854
 855 static inline void qede_rx_bd_ring_consume(struct qede_rx_queue *rxq)
 856 {
 857         qed_chain_consume(&rxq->rx_bd_ring);
 858         rxq->sw_rx_cons++;
 859 }
 860
 861 /* This function reuses the buffer(from an offset) from
 862  * consumer index to producer index in the bd ring
 863  */
 864 static inline void qede_reuse_page(struct qede_dev *edev,
 865                                    struct qede_rx_queue *rxq,
 866                                    struct sw_rx_data *curr_cons)
 867 {
 868         struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring);
 869         struct sw_rx_data *curr_prod;
 870         dma_addr_t new_mapping;
 871
 872         curr_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
 873         *curr_prod = *curr_cons;
 874
 875         new_mapping = curr_prod->mapping + curr_prod->page_offset;
 876
 877         rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(new_mapping));
 878         rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(new_mapping));
 879
 880         rxq->sw_rx_prod++;
 881         curr_cons->data = NULL;
 882 }
 883
 884 /* In case of allocation failures reuse buffers
 885  * from consumer index to produce buffers for firmware
 886  */
 887 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq,
 888                              struct qede_dev *edev, u8 count)
 889 {
 890         struct sw_rx_data *curr_cons;
 891
 892         for (; count > 0; count--) {
 893                 curr_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX];
 894                 qede_reuse_page(edev, rxq, curr_cons);
 895                 qede_rx_bd_ring_consume(rxq);
 896         }
 897 }
 898
 899 static inline int qede_realloc_rx_buffer(struct qede_dev *edev,
 900                                          struct qede_rx_queue *rxq,
 901                                          struct sw_rx_data *curr_cons)
 902 {
 903         /* Move to the next segment in the page */
 904         curr_cons->page_offset += rxq->rx_buf_seg_size;
 905
 906         if (curr_cons->page_offset == PAGE_SIZE) {
 907                 if (unlikely(qede_alloc_rx_buffer(edev, rxq))) {
 908                         /* Since we failed to allocate new buffer
 909                          * current buffer can be used again.
 910                          */
 911                         curr_cons->page_offset -= rxq->rx_buf_seg_size;
 912
 913                         return -ENOMEM;
 914                 }
 915
 916                 dma_unmap_page(&edev->pdev->dev, curr_cons->mapping,
 917                                PAGE_SIZE, DMA_FROM_DEVICE);
 918         } else {
 919                 /* Increment refcount of the page as we don't want
 920                  * network stack to take the ownership of the page
 921                  * which can be recycled multiple times by the driver.
 922                  */
 923                 page_ref_inc(curr_cons->data);
 924                 qede_reuse_page(edev, rxq, curr_cons);
 925         }
 926
 927         return 0;
 928 }
 929
 930 static inline void qede_update_rx_prod(struct qede_dev *edev,
 931                                        struct qede_rx_queue *rxq)
 932 {
 933         u16 bd_prod = qed_chain_get_prod_idx(&rxq->rx_bd_ring);
 934         u16 cqe_prod = qed_chain_get_prod_idx(&rxq->rx_comp_ring);
 935         struct eth_rx_prod_data rx_prods = {0};
 936
 937         /* Update producers */
 938         rx_prods.bd_prod = cpu_to_le16(bd_prod);
 939         rx_prods.cqe_prod = cpu_to_le16(cqe_prod);
 940
 941         /* Make sure that the BD and SGE data is updated before updating the
 942          * producers since FW might read the BD/SGE right after the producer
 943          * is updated.
 944          */
 945         wmb();
 946
 947         internal_ram_wr(rxq->hw_rxq_prod_addr, sizeof(rx_prods),
 948                         (u32 *)&rx_prods);
 949
 950         /* mmiowb is needed to synchronize doorbell writes from more than one
 951          * processor. It guarantees that the write arrives to the device before
 952          * the napi lock is released and another qede_poll is called (possibly
 953          * on another CPU). Without this barrier, the next doorbell can bypass
 954          * this doorbell. This is applicable to IA64/Altix systems.
 955          */
 956         mmiowb();
 957 }
 958
 959 static u32 qede_get_rxhash(struct qede_dev *edev,
 960                            u8 bitfields,
 961                            __le32 rss_hash,
 962                            enum pkt_hash_types *rxhash_type)
 963 {
 964         enum rss_hash_type htype;
 965
 966         htype = GET_FIELD(bitfields, ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE);
 967
 968         if ((edev->ndev->features & NETIF_F_RXHASH) && htype) {
 969                 *rxhash_type = ((htype == RSS_HASH_TYPE_IPV4) ||
 970                                 (htype == RSS_HASH_TYPE_IPV6)) ?
 971                                 PKT_HASH_TYPE_L3 : PKT_HASH_TYPE_L4;
 972                 return le32_to_cpu(rss_hash);
 973         }
 974         *rxhash_type = PKT_HASH_TYPE_NONE;
 975         return 0;
 976 }
 977
 978 static void qede_set_skb_csum(struct sk_buff *skb, u8 csum_flag)
 979 {
 980         skb_checksum_none_assert(skb);
 981
 982         if (csum_flag & QEDE_CSUM_UNNECESSARY)
 983                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 984
 985         if (csum_flag & QEDE_TUNN_CSUM_UNNECESSARY)
 986                 skb->csum_level = 1;
 987 }
 988
 989 static inline void qede_skb_receive(struct qede_dev *edev,
 990                                     struct qede_fastpath *fp,
 991                                     struct sk_buff *skb,
 992                                     u16 vlan_tag)
 993 {
 994         if (vlan_tag)
 995                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
 996                                        vlan_tag);
 997
 998         napi_gro_receive(&fp->napi, skb);
 999 }
1000
1001 static void qede_set_gro_params(struct qede_dev *edev,
1002                                 struct sk_buff *skb,
1003                                 struct eth_fast_path_rx_tpa_start_cqe *cqe)
1004 {
1005         u16 parsing_flags = le16_to_cpu(cqe->pars_flags.flags);
1006
1007         if (((parsing_flags >> PARSING_AND_ERR_FLAGS_L3TYPE_SHIFT) &
1008             PARSING_AND_ERR_FLAGS_L3TYPE_MASK) == 2)
1009                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1010         else
1011                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1012
1013         skb_shinfo(skb)->gso_size = __le16_to_cpu(cqe->len_on_first_bd) -
1014                                         cqe->header_len;
1015 }
1016
1017 static int qede_fill_frag_skb(struct qede_dev *edev,
1018                               struct qede_rx_queue *rxq,
1019                               u8 tpa_agg_index,
1020                               u16 len_on_bd)
1021 {
1022         struct sw_rx_data *current_bd = &rxq->sw_rx_ring[rxq->sw_rx_cons &
1023                                                          NUM_RX_BDS_MAX];
1024         struct qede_agg_info *tpa_info = &rxq->tpa_info[tpa_agg_index];
1025         struct sk_buff *skb = tpa_info->skb;
1026
1027         if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START))
1028                 goto out;
1029
1030         /* Add one frag and update the appropriate fields in the skb */
1031         skb_fill_page_desc(skb, tpa_info->frag_id++,
1032                            current_bd->data, current_bd->page_offset,
1033                            len_on_bd);
1034
1035         if (unlikely(qede_realloc_rx_buffer(edev, rxq, current_bd))) {
1036                 /* Incr page ref count to reuse on allocation failure
1037                  * so that it doesn't get freed while freeing SKB.
1038                  */
1039                 page_ref_inc(current_bd->data);
1040                 goto out;
1041         }
1042
1043         qed_chain_consume(&rxq->rx_bd_ring);
1044         rxq->sw_rx_cons++;
1045
1046         skb->data_len += len_on_bd;
1047         skb->truesize += rxq->rx_buf_seg_size;
1048         skb->len += len_on_bd;
1049
1050         return 0;
1051
1052 out:
1053         tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
1054         qede_recycle_rx_bd_ring(rxq, edev, 1);
1055         return -ENOMEM;
1056 }
1057
1058 static void qede_tpa_start(struct qede_dev *edev,
1059                            struct qede_rx_queue *rxq,
1060                            struct eth_fast_path_rx_tpa_start_cqe *cqe)
1061 {
1062         struct qede_agg_info *tpa_info = &rxq->tpa_info[cqe->tpa_agg_index];
1063         struct eth_rx_bd *rx_bd_cons = qed_chain_consume(&rxq->rx_bd_ring);
1064         struct eth_rx_bd *rx_bd_prod = qed_chain_produce(&rxq->rx_bd_ring);
1065         struct sw_rx_data *replace_buf = &tpa_info->replace_buf;
1066         dma_addr_t mapping = tpa_info->replace_buf_mapping;
1067         struct sw_rx_data *sw_rx_data_cons;
1068         struct sw_rx_data *sw_rx_data_prod;
1069         enum pkt_hash_types rxhash_type;
1070         u32 rxhash;
1071
1072         sw_rx_data_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS_MAX];
1073         sw_rx_data_prod = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
1074
1075         /* Use pre-allocated replacement buffer - we can't release the agg.
1076          * start until its over and we don't want to risk allocation failing
1077          * here, so re-allocate when aggregation will be over.
1078          */
1079         sw_rx_data_prod->mapping = replace_buf->mapping;
1080
1081         sw_rx_data_prod->data = replace_buf->data;
1082         rx_bd_prod->addr.hi = cpu_to_le32(upper_32_bits(mapping));
1083         rx_bd_prod->addr.lo = cpu_to_le32(lower_32_bits(mapping));
1084         sw_rx_data_prod->page_offset = replace_buf->page_offset;
1085
1086         rxq->sw_rx_prod++;
1087
1088         /* move partial skb from cons to pool (don't unmap yet)
1089          * save mapping, incase we drop the packet later on.
1090          */
1091         tpa_info->start_buf = *sw_rx_data_cons;
1092         mapping = HILO_U64(le32_to_cpu(rx_bd_cons->addr.hi),
1093                            le32_to_cpu(rx_bd_cons->addr.lo));
1094
1095         tpa_info->start_buf_mapping = mapping;
1096         rxq->sw_rx_cons++;
1097
1098         /* set tpa state to start only if we are able to allocate skb
1099          * for this aggregation, otherwise mark as error and aggregation will
1100          * be dropped
1101          */
1102         tpa_info->skb = netdev_alloc_skb(edev->ndev,
1103                                          le16_to_cpu(cqe->len_on_first_bd));
1104         if (unlikely(!tpa_info->skb)) {
1105                 DP_NOTICE(edev, "Failed to allocate SKB for gro\n");
1106                 tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
1107                 goto cons_buf;
1108         }
1109
1110         skb_put(tpa_info->skb, le16_to_cpu(cqe->len_on_first_bd));
1111         memcpy(&tpa_info->start_cqe, cqe, sizeof(tpa_info->start_cqe));
1112
1113         /* Start filling in the aggregation info */
1114         tpa_info->frag_id = 0;
1115         tpa_info->agg_state = QEDE_AGG_STATE_START;
1116
1117         rxhash = qede_get_rxhash(edev, cqe->bitfields,
1118                                  cqe->rss_hash, &rxhash_type);
1119         skb_set_hash(tpa_info->skb, rxhash, rxhash_type);
1120         if ((le16_to_cpu(cqe->pars_flags.flags) >>
1121              PARSING_AND_ERR_FLAGS_TAG8021QEXIST_SHIFT) &
1122                     PARSING_AND_ERR_FLAGS_TAG8021QEXIST_MASK)
1123                 tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
1124         else
1125                 tpa_info->vlan_tag = 0;
1126
1127         /* This is needed in order to enable forwarding support */
1128         qede_set_gro_params(edev, tpa_info->skb, cqe);
1129
1130 cons_buf: /* We still need to handle bd_len_list to consume buffers */
1131         if (likely(cqe->ext_bd_len_list[0]))
1132                 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
1133                                    le16_to_cpu(cqe->ext_bd_len_list[0]));
1134
1135         if (unlikely(cqe->ext_bd_len_list[1])) {
1136                 DP_ERR(edev,
1137                        "Unlikely - got a TPA aggregation with more than one ext_bd_len_list entry in the TPA start\n");
1138                 tpa_info->agg_state = QEDE_AGG_STATE_ERROR;
1139         }
1140 }
1141
1142 #ifdef CONFIG_INET
1143 static void qede_gro_ip_csum(struct sk_buff *skb)
1144 {
1145         const struct iphdr *iph = ip_hdr(skb);
1146         struct tcphdr *th;
1147
1148         skb_set_transport_header(skb, sizeof(struct iphdr));
1149         th = tcp_hdr(skb);
1150
1151         th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
1152                                   iph->saddr, iph->daddr, 0);
1153
1154         tcp_gro_complete(skb);
1155 }
1156
1157 static void qede_gro_ipv6_csum(struct sk_buff *skb)
1158 {
1159         struct ipv6hdr *iph = ipv6_hdr(skb);
1160         struct tcphdr *th;
1161
1162         skb_set_transport_header(skb, sizeof(struct ipv6hdr));
1163         th = tcp_hdr(skb);
1164
1165         th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb),
1166                                   &iph->saddr, &iph->daddr, 0);
1167         tcp_gro_complete(skb);
1168 }
1169 #endif
1170
1171 static void qede_gro_receive(struct qede_dev *edev,
1172                              struct qede_fastpath *fp,
1173                              struct sk_buff *skb,
1174                              u16 vlan_tag)
1175 {
1176         /* FW can send a single MTU sized packet from gro flow
1177          * due to aggregation timeout/last segment etc. which
1178          * is not expected to be a gro packet. If a skb has zero
1179          * frags then simply push it in the stack as non gso skb.
1180          */
1181         if (unlikely(!skb->data_len)) {
1182                 skb_shinfo(skb)->gso_type = 0;
1183                 skb_shinfo(skb)->gso_size = 0;
1184                 goto send_skb;
1185         }
1186
1187 #ifdef CONFIG_INET
1188         if (skb_shinfo(skb)->gso_size) {
1189                 skb_set_network_header(skb, 0);
1190
1191                 switch (skb->protocol) {
1192                 case htons(ETH_P_IP):
1193                         qede_gro_ip_csum(skb);
1194                         break;
1195                 case htons(ETH_P_IPV6):
1196                         qede_gro_ipv6_csum(skb);
1197                         break;
1198                 default:
1199                         DP_ERR(edev,
1200                                "Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n",
1201                                ntohs(skb->protocol));
1202                 }
1203         }
1204 #endif
1205
1206 send_skb:
1207         skb_record_rx_queue(skb, fp->rss_id);
1208         qede_skb_receive(edev, fp, skb, vlan_tag);
1209 }
1210
1211 static inline void qede_tpa_cont(struct qede_dev *edev,
1212                                  struct qede_rx_queue *rxq,
1213                                  struct eth_fast_path_rx_tpa_cont_cqe *cqe)
1214 {
1215         int i;
1216
1217         for (i = 0; cqe->len_list[i]; i++)
1218                 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
1219                                    le16_to_cpu(cqe->len_list[i]));
1220
1221         if (unlikely(i > 1))
1222                 DP_ERR(edev,
1223                        "Strange - TPA cont with more than a single len_list entry\n");
1224 }
1225
1226 static void qede_tpa_end(struct qede_dev *edev,
1227                          struct qede_fastpath *fp,
1228                          struct eth_fast_path_rx_tpa_end_cqe *cqe)
1229 {
1230         struct qede_rx_queue *rxq = fp->rxq;
1231         struct qede_agg_info *tpa_info;
1232         struct sk_buff *skb;
1233         int i;
1234
1235         tpa_info = &rxq->tpa_info[cqe->tpa_agg_index];
1236         skb = tpa_info->skb;
1237
1238         for (i = 0; cqe->len_list[i]; i++)
1239                 qede_fill_frag_skb(edev, rxq, cqe->tpa_agg_index,
1240                                    le16_to_cpu(cqe->len_list[i]));
1241         if (unlikely(i > 1))
1242                 DP_ERR(edev,
1243                        "Strange - TPA emd with more than a single len_list entry\n");
1244
1245         if (unlikely(tpa_info->agg_state != QEDE_AGG_STATE_START))
1246                 goto err;
1247
1248         /* Sanity */
1249         if (unlikely(cqe->num_of_bds != tpa_info->frag_id + 1))
1250                 DP_ERR(edev,
1251                        "Strange - TPA had %02x BDs, but SKB has only %d frags\n",
1252                        cqe->num_of_bds, tpa_info->frag_id);
1253         if (unlikely(skb->len != le16_to_cpu(cqe->total_packet_len)))
1254                 DP_ERR(edev,
1255                        "Strange - total packet len [cqe] is %4x but SKB has len %04x\n",
1256                        le16_to_cpu(cqe->total_packet_len), skb->len);
1257
1258         memcpy(skb->data,
1259                page_address(tpa_info->start_buf.data) +
1260                 tpa_info->start_cqe.placement_offset +
1261                 tpa_info->start_buf.page_offset,
1262                le16_to_cpu(tpa_info->start_cqe.len_on_first_bd));
1263
1264         /* Recycle [mapped] start buffer for the next replacement */
1265         tpa_info->replace_buf = tpa_info->start_buf;
1266         tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping;
1267
1268         /* Finalize the SKB */
1269         skb->protocol = eth_type_trans(skb, edev->ndev);
1270         skb->ip_summed = CHECKSUM_UNNECESSARY;
1271
1272         /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
1273          * to skb_shinfo(skb)->gso_segs
1274          */
1275         NAPI_GRO_CB(skb)->count = le16_to_cpu(cqe->num_of_coalesced_segs);
1276
1277         qede_gro_receive(edev, fp, skb, tpa_info->vlan_tag);
1278
1279         tpa_info->agg_state = QEDE_AGG_STATE_NONE;
1280
1281         return;
1282 err:
1283         /* The BD starting the aggregation is still mapped; Re-use it for
1284          * future aggregations [as replacement buffer]
1285          */
1286         memcpy(&tpa_info->replace_buf, &tpa_info->start_buf,
1287                sizeof(struct sw_rx_data));
1288         tpa_info->replace_buf_mapping = tpa_info->start_buf_mapping;
1289         tpa_info->start_buf.data = NULL;
1290         tpa_info->agg_state = QEDE_AGG_STATE_NONE;
1291         dev_kfree_skb_any(tpa_info->skb);
1292         tpa_info->skb = NULL;
1293 }
1294
1295 static bool qede_tunn_exist(u16 flag)
1296 {
1297         return !!(flag & (PARSING_AND_ERR_FLAGS_TUNNELEXIST_MASK <<
1298                           PARSING_AND_ERR_FLAGS_TUNNELEXIST_SHIFT));
1299 }
1300
1301 static u8 qede_check_tunn_csum(u16 flag)
1302 {
1303         u16 csum_flag = 0;
1304         u8 tcsum = 0;
1305
1306         if (flag & (PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_MASK <<
1307                     PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_SHIFT))
1308                 csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_MASK <<
1309                              PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_SHIFT;
1310
1311         if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
1312                     PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) {
1313                 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
1314                              PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
1315                 tcsum = QEDE_TUNN_CSUM_UNNECESSARY;
1316         }
1317
1318         csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_MASK <<
1319                      PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_SHIFT |
1320                      PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
1321                      PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;
1322
1323         if (csum_flag & flag)
1324                 return QEDE_CSUM_ERROR;
1325
1326         return QEDE_CSUM_UNNECESSARY | tcsum;
1327 }
1328
1329 static u8 qede_check_notunn_csum(u16 flag)
1330 {
1331         u16 csum_flag = 0;
1332         u8 csum = 0;
1333
1334         if (flag & (PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
1335                     PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT)) {
1336                 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
1337                              PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
1338                 csum = QEDE_CSUM_UNNECESSARY;
1339         }
1340
1341         csum_flag |= PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
1342                      PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;
1343
1344         if (csum_flag & flag)
1345                 return QEDE_CSUM_ERROR;
1346
1347         return csum;
1348 }
1349
1350 static u8 qede_check_csum(u16 flag)
1351 {
1352         if (!qede_tunn_exist(flag))
1353                 return qede_check_notunn_csum(flag);
1354         else
1355                 return qede_check_tunn_csum(flag);
1356 }
1357
1358 static int qede_rx_int(struct qede_fastpath *fp, int budget)
1359 {
1360         struct qede_dev *edev = fp->edev;
1361         struct qede_rx_queue *rxq = fp->rxq;
1362
1363         u16 hw_comp_cons, sw_comp_cons, sw_rx_index, parse_flag;
1364         int rx_pkt = 0;
1365         u8 csum_flag;
1366
1367         hw_comp_cons = le16_to_cpu(*rxq->hw_cons_ptr);
1368         sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
1369
1370         /* Memory barrier to prevent the CPU from doing speculative reads of CQE
1371          * / BD in the while-loop before reading hw_comp_cons. If the CQE is
1372          * read before it is written by FW, then FW writes CQE and SB, and then
1373          * the CPU reads the hw_comp_cons, it will use an old CQE.
1374          */
1375         rmb();
1376
1377         /* Loop to complete all indicated BDs */
1378         while (sw_comp_cons != hw_comp_cons) {
1379                 struct eth_fast_path_rx_reg_cqe *fp_cqe;
1380                 enum pkt_hash_types rxhash_type;
1381                 enum eth_rx_cqe_type cqe_type;
1382                 struct sw_rx_data *sw_rx_data;
1383                 union eth_rx_cqe *cqe;
1384                 struct sk_buff *skb;
1385                 struct page *data;
1386                 __le16 flags;
1387                 u16 len, pad;
1388                 u32 rx_hash;
1389
1390                 /* Get the CQE from the completion ring */
1391                 cqe = (union eth_rx_cqe *)
1392                         qed_chain_consume(&rxq->rx_comp_ring);
1393                 cqe_type = cqe->fast_path_regular.type;
1394
1395                 if (unlikely(cqe_type == ETH_RX_CQE_TYPE_SLOW_PATH)) {
1396                         edev->ops->eth_cqe_completion(
1397                                         edev->cdev, fp->rss_id,
1398                                         (struct eth_slow_path_rx_cqe *)cqe);
1399                         goto next_cqe;
1400                 }
1401
1402                 if (cqe_type != ETH_RX_CQE_TYPE_REGULAR) {
1403                         switch (cqe_type) {
1404                         case ETH_RX_CQE_TYPE_TPA_START:
1405                                 qede_tpa_start(edev, rxq,
1406                                                &cqe->fast_path_tpa_start);
1407                                 goto next_cqe;
1408                         case ETH_RX_CQE_TYPE_TPA_CONT:
1409                                 qede_tpa_cont(edev, rxq,
1410                                               &cqe->fast_path_tpa_cont);
1411                                 goto next_cqe;
1412                         case ETH_RX_CQE_TYPE_TPA_END:
1413                                 qede_tpa_end(edev, fp,
1414                                              &cqe->fast_path_tpa_end);
1415                                 goto next_rx_only;
1416                         default:
1417                                 break;
1418                         }
1419                 }
1420
1421                 /* Get the data from the SW ring */
1422                 sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
1423                 sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
1424                 data = sw_rx_data->data;
1425
1426                 fp_cqe = &cqe->fast_path_regular;
1427                 len =  le16_to_cpu(fp_cqe->len_on_first_bd);
1428                 pad = fp_cqe->placement_offset;
1429                 flags = cqe->fast_path_regular.pars_flags.flags;
1430
1431                 /* If this is an error packet then drop it */
1432                 parse_flag = le16_to_cpu(flags);
1433
1434                 csum_flag = qede_check_csum(parse_flag);
1435                 if (unlikely(csum_flag == QEDE_CSUM_ERROR)) {
1436                         DP_NOTICE(edev,
1437                                   "CQE in CONS = %u has error, flags = %x, dropping incoming packet\n",
1438                                   sw_comp_cons, parse_flag);
1439                         rxq->rx_hw_errors++;
1440                         qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num);
1441                         goto next_cqe;
1442                 }
1443
1444                 skb = netdev_alloc_skb(edev->ndev, QEDE_RX_HDR_SIZE);
1445                 if (unlikely(!skb)) {
1446                         DP_NOTICE(edev,
1447                                   "Build_skb failed, dropping incoming packet\n");
1448                         qede_recycle_rx_bd_ring(rxq, edev, fp_cqe->bd_num);
1449                         rxq->rx_alloc_errors++;
1450                         goto next_cqe;
1451                 }
1452
1453                 /* Copy data into SKB */
1454                 if (len + pad <= QEDE_RX_HDR_SIZE) {
1455                         memcpy(skb_put(skb, len),
1456                                page_address(data) + pad +
1457                                 sw_rx_data->page_offset, len);
1458                         qede_reuse_page(edev, rxq, sw_rx_data);
1459                 } else {
1460                         struct skb_frag_struct *frag;
1461                         unsigned int pull_len;
1462                         unsigned char *va;
1463
1464                         frag = &skb_shinfo(skb)->frags[0];
1465
1466                         skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, data,
1467                                         pad + sw_rx_data->page_offset,
1468                                         len, rxq->rx_buf_seg_size);
1469
1470                         va = skb_frag_address(frag);
1471                         pull_len = eth_get_headlen(va, QEDE_RX_HDR_SIZE);
1472
1473                         /* Align the pull_len to optimize memcpy */
1474                         memcpy(skb->data, va, ALIGN(pull_len, sizeof(long)));
1475
1476                         skb_frag_size_sub(frag, pull_len);
1477                         frag->page_offset += pull_len;
1478                         skb->data_len -= pull_len;
1479                         skb->tail += pull_len;
1480
1481                         if (unlikely(qede_realloc_rx_buffer(edev, rxq,
1482                                                             sw_rx_data))) {
1483                                 DP_ERR(edev, "Failed to allocate rx buffer\n");
1484                                 /* Incr page ref count to reuse on allocation
1485                                  * failure so that it doesn't get freed while
1486                                  * freeing SKB.
1487                                  */
1488
1489                                 page_ref_inc(sw_rx_data->data);
1490                                 rxq->rx_alloc_errors++;
1491                                 qede_recycle_rx_bd_ring(rxq, edev,
1492                                                         fp_cqe->bd_num);
1493                                 dev_kfree_skb_any(skb);
1494                                 goto next_cqe;
1495                         }
1496                 }
1497
1498                 qede_rx_bd_ring_consume(rxq);
1499
1500                 if (fp_cqe->bd_num != 1) {
1501                         u16 pkt_len = le16_to_cpu(fp_cqe->pkt_len);
1502                         u8 num_frags;
1503
1504                         pkt_len -= len;
1505
1506                         for (num_frags = fp_cqe->bd_num - 1; num_frags > 0;
1507                              num_frags--) {
1508                                 u16 cur_size = pkt_len > rxq->rx_buf_size ?
1509                                                 rxq->rx_buf_size : pkt_len;
1510                                 if (unlikely(!cur_size)) {
1511                                         DP_ERR(edev,
1512                                                "Still got %d BDs for mapping jumbo, but length became 0\n",
1513                                                num_frags);
1514                                         qede_recycle_rx_bd_ring(rxq, edev,
1515                                                                 num_frags);
1516                                         dev_kfree_skb_any(skb);
1517                                         goto next_cqe;
1518                                 }
1519
1520                                 if (unlikely(qede_alloc_rx_buffer(edev, rxq))) {
1521                                         qede_recycle_rx_bd_ring(rxq, edev,
1522                                                                 num_frags);
1523                                         dev_kfree_skb_any(skb);
1524                                         goto next_cqe;
1525                                 }
1526
1527                                 sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS_MAX;
1528                                 sw_rx_data = &rxq->sw_rx_ring[sw_rx_index];
1529                                 qede_rx_bd_ring_consume(rxq);
1530
1531                                 dma_unmap_page(&edev->pdev->dev,
1532                                                sw_rx_data->mapping,
1533                                                PAGE_SIZE, DMA_FROM_DEVICE);
1534
1535                                 skb_fill_page_desc(skb,
1536                                                    skb_shinfo(skb)->nr_frags++,
1537                                                    sw_rx_data->data, 0,
1538                                                    cur_size);
1539
1540                                 skb->truesize += PAGE_SIZE;
1541                                 skb->data_len += cur_size;
1542                                 skb->len += cur_size;
1543                                 pkt_len -= cur_size;
1544                         }
1545
1546                         if (unlikely(pkt_len))
1547                                 DP_ERR(edev,
1548                                        "Mapped all BDs of jumbo, but still have %d bytes\n",
1549                                        pkt_len);
1550                 }
1551
1552                 skb->protocol = eth_type_trans(skb, edev->ndev);
1553
1554                 rx_hash = qede_get_rxhash(edev, fp_cqe->bitfields,
1555                                           fp_cqe->rss_hash,
1556                                           &rxhash_type);
1557
1558                 skb_set_hash(skb, rx_hash, rxhash_type);
1559
1560                 qede_set_skb_csum(skb, csum_flag);
1561
1562                 skb_record_rx_queue(skb, fp->rss_id);
1563
1564                 qede_skb_receive(edev, fp, skb, le16_to_cpu(fp_cqe->vlan_tag));
1565 next_rx_only:
1566                 rx_pkt++;
1567
1568 next_cqe: /* don't consume bd rx buffer */
1569                 qed_chain_recycle_consumed(&rxq->rx_comp_ring);
1570                 sw_comp_cons = qed_chain_get_cons_idx(&rxq->rx_comp_ring);
1571                 /* CR TPA - revisit how to handle budget in TPA perhaps
1572                  * increase on "end"
1573                  */
1574                 if (rx_pkt == budget)
1575                         break;
1576         } /* repeat while sw_comp_cons != hw_comp_cons... */
1577
1578         /* Update producers */
1579         qede_update_rx_prod(edev, rxq);
1580
1581         return rx_pkt;
1582 }
1583
1584 static int qede_poll(struct napi_struct *napi, int budget)
1585 {
1586         int work_done = 0;
1587         struct qede_fastpath *fp = container_of(napi, struct qede_fastpath,
1588                                                  napi);
1589         struct qede_dev *edev = fp->edev;
1590
1591         while (1) {
1592                 u8 tc;
1593
1594                 for (tc = 0; tc < edev->num_tc; tc++)
1595                         if (qede_txq_has_work(&fp->txqs[tc]))
1596                                 qede_tx_int(edev, &fp->txqs[tc]);
1597
1598                 if (qede_has_rx_work(fp->rxq)) {
1599                         work_done += qede_rx_int(fp, budget - work_done);
1600
1601                         /* must not complete if we consumed full budget */
1602                         if (work_done >= budget)
1603                                 break;
1604                 }
1605
1606                 /* Fall out from the NAPI loop if needed */
1607                 if (!(qede_has_rx_work(fp->rxq) || qede_has_tx_work(fp))) {
1608                         qed_sb_update_sb_idx(fp->sb_info);
1609                         /* *_has_*_work() reads the status block,
1610                          * thus we need to ensure that status block indices
1611                          * have been actually read (qed_sb_update_sb_idx)
1612                          * prior to this check (*_has_*_work) so that
1613                          * we won't write the "newer" value of the status block
1614                          * to HW (if there was a DMA right after
1615                          * qede_has_rx_work and if there is no rmb, the memory
1616                          * reading (qed_sb_update_sb_idx) may be postponed
1617                          * to right before *_ack_sb). In this case there
1618                          * will never be another interrupt until there is
1619                          * another update of the status block, while there
1620                          * is still unhandled work.
1621                          */
1622                         rmb();
1623
1624                         if (!(qede_has_rx_work(fp->rxq) ||
1625                               qede_has_tx_work(fp))) {
1626                                 napi_complete(napi);
1627                                 /* Update and reenable interrupts */
1628                                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE,
1629                                            1 /*update*/);
1630                                 break;
1631                         }
1632                 }
1633         }
1634
1635         return work_done;
1636 }
1637
1638 static irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie)
1639 {
1640         struct qede_fastpath *fp = fp_cookie;
1641
1642         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
1643
1644         napi_schedule_irqoff(&fp->napi);
1645         return IRQ_HANDLED;
1646 }
1647
1648 /* -------------------------------------------------------------------------
1649  * END OF FAST-PATH
1650  * -------------------------------------------------------------------------
1651  */
1652
1653 static int qede_open(struct net_device *ndev);
1654 static int qede_close(struct net_device *ndev);
1655 static int qede_set_mac_addr(struct net_device *ndev, void *p);
1656 static void qede_set_rx_mode(struct net_device *ndev);
1657 static void qede_config_rx_mode(struct net_device *ndev);
1658
1659 static int qede_set_ucast_rx_mac(struct qede_dev *edev,
1660                                  enum qed_filter_xcast_params_type opcode,
1661                                  unsigned char mac[ETH_ALEN])
1662 {
1663         struct qed_filter_params filter_cmd;
1664
1665         memset(&filter_cmd, 0, sizeof(filter_cmd));
1666         filter_cmd.type = QED_FILTER_TYPE_UCAST;
1667         filter_cmd.filter.ucast.type = opcode;
1668         filter_cmd.filter.ucast.mac_valid = 1;
1669         ether_addr_copy(filter_cmd.filter.ucast.mac, mac);
1670
1671         return edev->ops->filter_config(edev->cdev, &filter_cmd);
1672 }
1673
1674 static int qede_set_ucast_rx_vlan(struct qede_dev *edev,
1675                                   enum qed_filter_xcast_params_type opcode,
1676                                   u16 vid)
1677 {
1678         struct qed_filter_params filter_cmd;
1679
1680         memset(&filter_cmd, 0, sizeof(filter_cmd));
1681         filter_cmd.type = QED_FILTER_TYPE_UCAST;
1682         filter_cmd.filter.ucast.type = opcode;
1683         filter_cmd.filter.ucast.vlan_valid = 1;
1684         filter_cmd.filter.ucast.vlan = vid;
1685
1686         return edev->ops->filter_config(edev->cdev, &filter_cmd);
1687 }
1688
1689 void qede_fill_by_demand_stats(struct qede_dev *edev)
1690 {
1691         struct qed_eth_stats stats;
1692
1693         edev->ops->get_vport_stats(edev->cdev, &stats);
1694         edev->stats.no_buff_discards = stats.no_buff_discards;
1695         edev->stats.rx_ucast_bytes = stats.rx_ucast_bytes;
1696         edev->stats.rx_mcast_bytes = stats.rx_mcast_bytes;
1697         edev->stats.rx_bcast_bytes = stats.rx_bcast_bytes;
1698         edev->stats.rx_ucast_pkts = stats.rx_ucast_pkts;
1699         edev->stats.rx_mcast_pkts = stats.rx_mcast_pkts;
1700         edev->stats.rx_bcast_pkts = stats.rx_bcast_pkts;
1701         edev->stats.mftag_filter_discards = stats.mftag_filter_discards;
1702         edev->stats.mac_filter_discards = stats.mac_filter_discards;
1703
1704         edev->stats.tx_ucast_bytes = stats.tx_ucast_bytes;
1705         edev->stats.tx_mcast_bytes = stats.tx_mcast_bytes;
1706         edev->stats.tx_bcast_bytes = stats.tx_bcast_bytes;
1707         edev->stats.tx_ucast_pkts = stats.tx_ucast_pkts;
1708         edev->stats.tx_mcast_pkts = stats.tx_mcast_pkts;
1709         edev->stats.tx_bcast_pkts = stats.tx_bcast_pkts;
1710         edev->stats.tx_err_drop_pkts = stats.tx_err_drop_pkts;
1711         edev->stats.coalesced_pkts = stats.tpa_coalesced_pkts;
1712         edev->stats.coalesced_events = stats.tpa_coalesced_events;
1713         edev->stats.coalesced_aborts_num = stats.tpa_aborts_num;
1714         edev->stats.non_coalesced_pkts = stats.tpa_not_coalesced_pkts;
1715         edev->stats.coalesced_bytes = stats.tpa_coalesced_bytes;
1716
1717         edev->stats.rx_64_byte_packets = stats.rx_64_byte_packets;
1718         edev->stats.rx_65_to_127_byte_packets = stats.rx_65_to_127_byte_packets;
1719         edev->stats.rx_128_to_255_byte_packets =
1720                                 stats.rx_128_to_255_byte_packets;
1721         edev->stats.rx_256_to_511_byte_packets =
1722                                 stats.rx_256_to_511_byte_packets;
1723         edev->stats.rx_512_to_1023_byte_packets =
1724                                 stats.rx_512_to_1023_byte_packets;
1725         edev->stats.rx_1024_to_1518_byte_packets =
1726                                 stats.rx_1024_to_1518_byte_packets;
1727         edev->stats.rx_1519_to_1522_byte_packets =
1728                                 stats.rx_1519_to_1522_byte_packets;
1729         edev->stats.rx_1519_to_2047_byte_packets =
1730                                 stats.rx_1519_to_2047_byte_packets;
1731         edev->stats.rx_2048_to_4095_byte_packets =
1732                                 stats.rx_2048_to_4095_byte_packets;
1733         edev->stats.rx_4096_to_9216_byte_packets =
1734                                 stats.rx_4096_to_9216_byte_packets;
1735         edev->stats.rx_9217_to_16383_byte_packets =
1736                                 stats.rx_9217_to_16383_byte_packets;
1737         edev->stats.rx_crc_errors = stats.rx_crc_errors;
1738         edev->stats.rx_mac_crtl_frames = stats.rx_mac_crtl_frames;
1739         edev->stats.rx_pause_frames = stats.rx_pause_frames;
1740         edev->stats.rx_pfc_frames = stats.rx_pfc_frames;
1741         edev->stats.rx_align_errors = stats.rx_align_errors;
1742         edev->stats.rx_carrier_errors = stats.rx_carrier_errors;
1743         edev->stats.rx_oversize_packets = stats.rx_oversize_packets;
1744         edev->stats.rx_jabbers = stats.rx_jabbers;
1745         edev->stats.rx_undersize_packets = stats.rx_undersize_packets;
1746         edev->stats.rx_fragments = stats.rx_fragments;
1747         edev->stats.tx_64_byte_packets = stats.tx_64_byte_packets;
1748         edev->stats.tx_65_to_127_byte_packets = stats.tx_65_to_127_byte_packets;
1749         edev->stats.tx_128_to_255_byte_packets =
1750                                 stats.tx_128_to_255_byte_packets;
1751         edev->stats.tx_256_to_511_byte_packets =
1752                                 stats.tx_256_to_511_byte_packets;
1753         edev->stats.tx_512_to_1023_byte_packets =
1754                                 stats.tx_512_to_1023_byte_packets;
1755         edev->stats.tx_1024_to_1518_byte_packets =
1756                                 stats.tx_1024_to_1518_byte_packets;
1757         edev->stats.tx_1519_to_2047_byte_packets =
1758                                 stats.tx_1519_to_2047_byte_packets;
1759         edev->stats.tx_2048_to_4095_byte_packets =
1760                                 stats.tx_2048_to_4095_byte_packets;
1761         edev->stats.tx_4096_to_9216_byte_packets =
1762                                 stats.tx_4096_to_9216_byte_packets;
1763         edev->stats.tx_9217_to_16383_byte_packets =
1764                                 stats.tx_9217_to_16383_byte_packets;
1765         edev->stats.tx_pause_frames = stats.tx_pause_frames;
1766         edev->stats.tx_pfc_frames = stats.tx_pfc_frames;
1767         edev->stats.tx_lpi_entry_count = stats.tx_lpi_entry_count;
1768         edev->stats.tx_total_collisions = stats.tx_total_collisions;
1769         edev->stats.brb_truncates = stats.brb_truncates;
1770         edev->stats.brb_discards = stats.brb_discards;
1771         edev->stats.tx_mac_ctrl_frames = stats.tx_mac_ctrl_frames;
1772 }
1773
1774 static struct rtnl_link_stats64 *qede_get_stats64(
1775                             struct net_device *dev,
1776                             struct rtnl_link_stats64 *stats)
1777 {
1778         struct qede_dev *edev = netdev_priv(dev);
1779
1780         qede_fill_by_demand_stats(edev);
1781
1782         stats->rx_packets = edev->stats.rx_ucast_pkts +
1783                             edev->stats.rx_mcast_pkts +
1784                             edev->stats.rx_bcast_pkts;
1785         stats->tx_packets = edev->stats.tx_ucast_pkts +
1786                             edev->stats.tx_mcast_pkts +
1787                             edev->stats.tx_bcast_pkts;
1788
1789         stats->rx_bytes = edev->stats.rx_ucast_bytes +
1790                           edev->stats.rx_mcast_bytes +
1791                           edev->stats.rx_bcast_bytes;
1792
1793         stats->tx_bytes = edev->stats.tx_ucast_bytes +
1794                           edev->stats.tx_mcast_bytes +
1795                           edev->stats.tx_bcast_bytes;
1796
1797         stats->tx_errors = edev->stats.tx_err_drop_pkts;
1798         stats->multicast = edev->stats.rx_mcast_pkts +
1799                            edev->stats.rx_bcast_pkts;
1800
1801         stats->rx_fifo_errors = edev->stats.no_buff_discards;
1802
1803         stats->collisions = edev->stats.tx_total_collisions;
1804         stats->rx_crc_errors = edev->stats.rx_crc_errors;
1805         stats->rx_frame_errors = edev->stats.rx_align_errors;
1806
1807         return stats;
1808 }
1809
1810 #ifdef CONFIG_QED_SRIOV
1811 static int qede_get_vf_config(struct net_device *dev, int vfidx,
1812                               struct ifla_vf_info *ivi)
1813 {
1814         struct qede_dev *edev = netdev_priv(dev);
1815
1816         if (!edev->ops)
1817                 return -EINVAL;
1818
1819         return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
1820 }
1821
1822 static int qede_set_vf_rate(struct net_device *dev, int vfidx,
1823                             int min_tx_rate, int max_tx_rate)
1824 {
1825         struct qede_dev *edev = netdev_priv(dev);
1826
1827         return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
1828                                         max_tx_rate);
1829 }
1830
1831 static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
1832 {
1833         struct qede_dev *edev = netdev_priv(dev);
1834
1835         if (!edev->ops)
1836                 return -EINVAL;
1837
1838         return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
1839 }
1840
1841 static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
1842                                   int link_state)
1843 {
1844         struct qede_dev *edev = netdev_priv(dev);
1845
1846         if (!edev->ops)
1847                 return -EINVAL;
1848
1849         return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
1850 }
1851 #endif
1852
1853 static void qede_config_accept_any_vlan(struct qede_dev *edev, bool action)
1854 {
1855         struct qed_update_vport_params params;
1856         int rc;
1857
1858         /* Proceed only if action actually needs to be performed */
1859         if (edev->accept_any_vlan == action)
1860                 return;
1861
1862         memset(&params, 0, sizeof(params));
1863
1864         params.vport_id = 0;
1865         params.accept_any_vlan = action;
1866         params.update_accept_any_vlan_flg = 1;
1867
1868         rc = edev->ops->vport_update(edev->cdev, &params);
1869         if (rc) {
1870                 DP_ERR(edev, "Failed to %s accept-any-vlan\n",
1871                        action ? "enable" : "disable");
1872         } else {
1873                 DP_INFO(edev, "%s accept-any-vlan\n",
1874                         action ? "enabled" : "disabled");
1875                 edev->accept_any_vlan = action;
1876         }
1877 }
1878
1879 static int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
1880 {
1881         struct qede_dev *edev = netdev_priv(dev);
1882         struct qede_vlan *vlan, *tmp;
1883         int rc;
1884
1885         DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan 0x%04x\n", vid);
1886
1887         vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
1888         if (!vlan) {
1889                 DP_INFO(edev, "Failed to allocate struct for vlan\n");
1890                 return -ENOMEM;
1891         }
1892         INIT_LIST_HEAD(&vlan->list);
1893         vlan->vid = vid;
1894         vlan->configured = false;
1895
1896         /* Verify vlan isn't already configured */
1897         list_for_each_entry(tmp, &edev->vlan_list, list) {
1898                 if (tmp->vid == vlan->vid) {
1899                         DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
1900                                    "vlan already configured\n");
1901                         kfree(vlan);
1902                         return -EEXIST;
1903                 }
1904         }
1905
1906         /* If interface is down, cache this VLAN ID and return */
1907         if (edev->state != QEDE_STATE_OPEN) {
1908                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
1909                            "Interface is down, VLAN %d will be configured when interface is up\n",
1910                            vid);
1911                 if (vid != 0)
1912                         edev->non_configured_vlans++;
1913                 list_add(&vlan->list, &edev->vlan_list);
1914
1915                 return 0;
1916         }
1917
1918         /* Check for the filter limit.
1919          * Note - vlan0 has a reserved filter and can be added without
1920          * worrying about quota
1921          */
1922         if ((edev->configured_vlans < edev->dev_info.num_vlan_filters) ||
1923             (vlan->vid == 0)) {
1924                 rc = qede_set_ucast_rx_vlan(edev,
1925                                             QED_FILTER_XCAST_TYPE_ADD,
1926                                             vlan->vid);
1927                 if (rc) {
1928                         DP_ERR(edev, "Failed to configure VLAN %d\n",
1929                                vlan->vid);
1930                         kfree(vlan);
1931                         return -EINVAL;
1932                 }
1933                 vlan->configured = true;
1934
1935                 /* vlan0 filter isn't consuming out of our quota */
1936                 if (vlan->vid != 0)
1937                         edev->configured_vlans++;
1938         } else {
1939                 /* Out of quota; Activate accept-any-VLAN mode */
1940                 if (!edev->non_configured_vlans)
1941                         qede_config_accept_any_vlan(edev, true);
1942
1943                 edev->non_configured_vlans++;
1944         }
1945
1946         list_add(&vlan->list, &edev->vlan_list);
1947
1948         return 0;
1949 }
1950
1951 static void qede_del_vlan_from_list(struct qede_dev *edev,
1952                                     struct qede_vlan *vlan)
1953 {
1954         /* vlan0 filter isn't consuming out of our quota */
1955         if (vlan->vid != 0) {
1956                 if (vlan->configured)
1957                         edev->configured_vlans--;
1958                 else
1959                         edev->non_configured_vlans--;
1960         }
1961
1962         list_del(&vlan->list);
1963         kfree(vlan);
1964 }
1965
1966 static int qede_configure_vlan_filters(struct qede_dev *edev)
1967 {
1968         int rc = 0, real_rc = 0, accept_any_vlan = 0;
1969         struct qed_dev_eth_info *dev_info;
1970         struct qede_vlan *vlan = NULL;
1971
1972         if (list_empty(&edev->vlan_list))
1973                 return 0;
1974
1975         dev_info = &edev->dev_info;
1976
1977         /* Configure non-configured vlans */
1978         list_for_each_entry(vlan, &edev->vlan_list, list) {
1979                 if (vlan->configured)
1980                         continue;
1981
1982                 /* We have used all our credits, now enable accept_any_vlan */
1983                 if ((vlan->vid != 0) &&
1984                     (edev->configured_vlans == dev_info->num_vlan_filters)) {
1985                         accept_any_vlan = 1;
1986                         continue;
1987                 }
1988
1989                 DP_VERBOSE(edev, NETIF_MSG_IFUP, "Adding vlan %d\n", vlan->vid);
1990
1991                 rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_ADD,
1992                                             vlan->vid);
1993                 if (rc) {
1994                         DP_ERR(edev, "Failed to configure VLAN %u\n",
1995                                vlan->vid);
1996                         real_rc = rc;
1997                         continue;
1998                 }
1999
2000                 vlan->configured = true;
2001                 /* vlan0 filter doesn't consume our VLAN filter's quota */
2002                 if (vlan->vid != 0) {
2003                         edev->non_configured_vlans--;
2004                         edev->configured_vlans++;
2005                 }
2006         }
2007
2008         /* enable accept_any_vlan mode if we have more VLANs than credits,
2009          * or remove accept_any_vlan mode if we've actually removed
2010          * a non-configured vlan, and all remaining vlans are truly configured.
2011          */
2012
2013         if (accept_any_vlan)
2014                 qede_config_accept_any_vlan(edev, true);
2015         else if (!edev->non_configured_vlans)
2016                 qede_config_accept_any_vlan(edev, false);
2017
2018         return real_rc;
2019 }
2020
2021 static int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
2022 {
2023         struct qede_dev *edev = netdev_priv(dev);
2024         struct qede_vlan *vlan = NULL;
2025         int rc;
2026
2027         DP_VERBOSE(edev, NETIF_MSG_IFDOWN, "Removing vlan 0x%04x\n", vid);
2028
2029         /* Find whether entry exists */
2030         list_for_each_entry(vlan, &edev->vlan_list, list)
2031                 if (vlan->vid == vid)
2032                         break;
2033
2034         if (!vlan || (vlan->vid != vid)) {
2035                 DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
2036                            "Vlan isn't configured\n");
2037                 return 0;
2038         }
2039
2040         if (edev->state != QEDE_STATE_OPEN) {
2041                 /* As interface is already down, we don't have a VPORT
2042                  * instance to remove vlan filter. So just update vlan list
2043                  */
2044                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
2045                            "Interface is down, removing VLAN from list only\n");
2046                 qede_del_vlan_from_list(edev, vlan);
2047                 return 0;
2048         }
2049
2050         /* Remove vlan */
2051         rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL, vid);
2052         if (rc) {
2053                 DP_ERR(edev, "Failed to remove VLAN %d\n", vid);
2054                 return -EINVAL;
2055         }
2056
2057         qede_del_vlan_from_list(edev, vlan);
2058
2059         /* We have removed a VLAN - try to see if we can
2060          * configure non-configured VLAN from the list.
2061          */
2062         rc = qede_configure_vlan_filters(edev);
2063
2064         return rc;
2065 }
2066
2067 static void qede_vlan_mark_nonconfigured(struct qede_dev *edev)
2068 {
2069         struct qede_vlan *vlan = NULL;
2070
2071         if (list_empty(&edev->vlan_list))
2072                 return;
2073
2074         list_for_each_entry(vlan, &edev->vlan_list, list) {
2075                 if (!vlan->configured)
2076                         continue;
2077
2078                 vlan->configured = false;
2079
2080                 /* vlan0 filter isn't consuming out of our quota */
2081                 if (vlan->vid != 0) {
2082                         edev->non_configured_vlans++;
2083                         edev->configured_vlans--;
2084                 }
2085
2086                 DP_VERBOSE(edev, NETIF_MSG_IFDOWN,
2087                            "marked vlan %d as non-configured\n",
2088                            vlan->vid);
2089         }
2090
2091         edev->accept_any_vlan = false;
2092 }
2093
2094 int qede_set_features(struct net_device *dev, netdev_features_t features)
2095 {
2096         struct qede_dev *edev = netdev_priv(dev);
2097         netdev_features_t changes = features ^ dev->features;
2098         bool need_reload = false;
2099
2100         /* No action needed if hardware GRO is disabled during driver load */
2101         if (changes & NETIF_F_GRO) {
2102                 if (dev->features & NETIF_F_GRO)
2103                         need_reload = !edev->gro_disable;
2104                 else
2105                         need_reload = edev->gro_disable;
2106         }
2107
2108         if (need_reload && netif_running(edev->ndev)) {
2109                 dev->features = features;
2110                 qede_reload(edev, NULL, NULL);
2111                 return 1;
2112         }
2113
2114         return 0;
2115 }
2116
2117 #ifdef CONFIG_QEDE_VXLAN
2118 static void qede_add_vxlan_port(struct net_device *dev,
2119                                 sa_family_t sa_family, __be16 port)
2120 {
2121         struct qede_dev *edev = netdev_priv(dev);
2122         u16 t_port = ntohs(port);
2123
2124         if (edev->vxlan_dst_port)
2125                 return;
2126
2127         edev->vxlan_dst_port = t_port;
2128
2129         DP_VERBOSE(edev, QED_MSG_DEBUG, "Added vxlan port=%d", t_port);
2130
2131         set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
2132         schedule_delayed_work(&edev->sp_task, 0);
2133 }
2134
2135 static void qede_del_vxlan_port(struct net_device *dev,
2136                                 sa_family_t sa_family, __be16 port)
2137 {
2138         struct qede_dev *edev = netdev_priv(dev);
2139         u16 t_port = ntohs(port);
2140
2141         if (t_port != edev->vxlan_dst_port)
2142                 return;
2143
2144         edev->vxlan_dst_port = 0;
2145
2146         DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted vxlan port=%d", t_port);
2147
2148         set_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags);
2149         schedule_delayed_work(&edev->sp_task, 0);
2150 }
2151 #endif
2152
2153 #ifdef CONFIG_QEDE_GENEVE
2154 static void qede_add_geneve_port(struct net_device *dev,
2155                                  sa_family_t sa_family, __be16 port)
2156 {
2157         struct qede_dev *edev = netdev_priv(dev);
2158         u16 t_port = ntohs(port);
2159
2160         if (edev->geneve_dst_port)
2161                 return;
2162
2163         edev->geneve_dst_port = t_port;
2164
2165         DP_VERBOSE(edev, QED_MSG_DEBUG, "Added geneve port=%d", t_port);
2166         set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
2167         schedule_delayed_work(&edev->sp_task, 0);
2168 }
2169
2170 static void qede_del_geneve_port(struct net_device *dev,
2171                                  sa_family_t sa_family, __be16 port)
2172 {
2173         struct qede_dev *edev = netdev_priv(dev);
2174         u16 t_port = ntohs(port);
2175
2176         if (t_port != edev->geneve_dst_port)
2177                 return;
2178
2179         edev->geneve_dst_port = 0;
2180
2181         DP_VERBOSE(edev, QED_MSG_DEBUG, "Deleted geneve port=%d", t_port);
2182         set_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags);
2183         schedule_delayed_work(&edev->sp_task, 0);
2184 }
2185 #endif
2186
2187 static const struct net_device_ops qede_netdev_ops = {
2188         .ndo_open = qede_open,
2189         .ndo_stop = qede_close,
2190         .ndo_start_xmit = qede_start_xmit,
2191         .ndo_set_rx_mode = qede_set_rx_mode,
2192         .ndo_set_mac_address = qede_set_mac_addr,
2193         .ndo_validate_addr = eth_validate_addr,
2194         .ndo_change_mtu = qede_change_mtu,
2195 #ifdef CONFIG_QED_SRIOV
2196         .ndo_set_vf_mac = qede_set_vf_mac,
2197         .ndo_set_vf_vlan = qede_set_vf_vlan,
2198 #endif
2199         .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
2200         .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
2201         .ndo_set_features = qede_set_features,
2202         .ndo_get_stats64 = qede_get_stats64,
2203 #ifdef CONFIG_QED_SRIOV
2204         .ndo_set_vf_link_state = qede_set_vf_link_state,
2205         .ndo_set_vf_spoofchk = qede_set_vf_spoofchk,
2206         .ndo_get_vf_config = qede_get_vf_config,
2207         .ndo_set_vf_rate = qede_set_vf_rate,
2208 #endif
2209 #ifdef CONFIG_QEDE_VXLAN
2210         .ndo_add_vxlan_port = qede_add_vxlan_port,
2211         .ndo_del_vxlan_port = qede_del_vxlan_port,
2212 #endif
2213 #ifdef CONFIG_QEDE_GENEVE
2214         .ndo_add_geneve_port = qede_add_geneve_port,
2215         .ndo_del_geneve_port = qede_del_geneve_port,
2216 #endif
2217 };
2218
2219 /* -------------------------------------------------------------------------
2220  * START OF PROBE / REMOVE
2221  * -------------------------------------------------------------------------
2222  */
2223
2224 static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
2225                                             struct pci_dev *pdev,
2226                                             struct qed_dev_eth_info *info,
2227                                             u32 dp_module,
2228                                             u8 dp_level)
2229 {
2230         struct net_device *ndev;
2231         struct qede_dev *edev;
2232
2233         ndev = alloc_etherdev_mqs(sizeof(*edev),
2234                                   info->num_queues,
2235                                   info->num_queues);
2236         if (!ndev) {
2237                 pr_err("etherdev allocation failed\n");
2238                 return NULL;
2239         }
2240
2241         edev = netdev_priv(ndev);
2242         edev->ndev = ndev;
2243         edev->cdev = cdev;
2244         edev->pdev = pdev;
2245         edev->dp_module = dp_module;
2246         edev->dp_level = dp_level;
2247         edev->ops = qed_ops;
2248         edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
2249         edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
2250
2251         SET_NETDEV_DEV(ndev, &pdev->dev);
2252
2253         memset(&edev->stats, 0, sizeof(edev->stats));
2254         memcpy(&edev->dev_info, info, sizeof(*info));
2255
2256         edev->num_tc = edev->dev_info.num_tc;
2257
2258         INIT_LIST_HEAD(&edev->vlan_list);
2259
2260         return edev;
2261 }
2262
2263 static void qede_init_ndev(struct qede_dev *edev)
2264 {
2265         struct net_device *ndev = edev->ndev;
2266         struct pci_dev *pdev = edev->pdev;
2267         u32 hw_features;
2268
2269         pci_set_drvdata(pdev, ndev);
2270
2271         ndev->mem_start = edev->dev_info.common.pci_mem_start;
2272         ndev->base_addr = ndev->mem_start;
2273         ndev->mem_end = edev->dev_info.common.pci_mem_end;
2274         ndev->irq = edev->dev_info.common.pci_irq;
2275
2276         ndev->watchdog_timeo = TX_TIMEOUT;
2277
2278         ndev->netdev_ops = &qede_netdev_ops;
2279
2280         qede_set_ethtool_ops(ndev);
2281
2282         /* user-changeble features */
2283         hw_features = NETIF_F_GRO | NETIF_F_SG |
2284                       NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2285                       NETIF_F_TSO | NETIF_F_TSO6;
2286
2287         /* Encap features*/
2288         hw_features |= NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL |
2289                        NETIF_F_TSO_ECN;
2290         ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2291                                 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO_ECN |
2292                                 NETIF_F_TSO6 | NETIF_F_GSO_GRE |
2293                                 NETIF_F_GSO_UDP_TUNNEL | NETIF_F_RXCSUM;
2294
2295         ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
2296                               NETIF_F_HIGHDMA;
2297         ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
2298                          NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
2299                          NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
2300
2301         ndev->hw_features = hw_features;
2302
2303         /* Set network device HW mac */
2304         ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
2305 }
2306
2307 /* This function converts from 32b param to two params of level and module
2308  * Input 32b decoding:
2309  * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
2310  * 'happy' flow, e.g. memory allocation failed.
2311  * b30 - enable all INFO prints. INFO prints are for major steps in the flow
2312  * and provide important parameters.
2313  * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
2314  * module. VERBOSE prints are for tracking the specific flow in low level.
2315  *
2316  * Notice that the level should be that of the lowest required logs.
2317  */
2318 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
2319 {
2320         *p_dp_level = QED_LEVEL_NOTICE;
2321         *p_dp_module = 0;
2322
2323         if (debug & QED_LOG_VERBOSE_MASK) {
2324                 *p_dp_level = QED_LEVEL_VERBOSE;
2325                 *p_dp_module = (debug & 0x3FFFFFFF);
2326         } else if (debug & QED_LOG_INFO_MASK) {
2327                 *p_dp_level = QED_LEVEL_INFO;
2328         } else if (debug & QED_LOG_NOTICE_MASK) {
2329                 *p_dp_level = QED_LEVEL_NOTICE;
2330         }
2331 }
2332
2333 static void qede_free_fp_array(struct qede_dev *edev)
2334 {
2335         if (edev->fp_array) {
2336                 struct qede_fastpath *fp;
2337                 int i;
2338
2339                 for_each_rss(i) {
2340                         fp = &edev->fp_array[i];
2341
2342                         kfree(fp->sb_info);
2343                         kfree(fp->rxq);
2344                         kfree(fp->txqs);
2345                 }
2346                 kfree(edev->fp_array);
2347         }
2348         edev->num_rss = 0;
2349 }
2350
2351 static int qede_alloc_fp_array(struct qede_dev *edev)
2352 {
2353         struct qede_fastpath *fp;
2354         int i;
2355
2356         edev->fp_array = kcalloc(QEDE_RSS_CNT(edev),
2357                                  sizeof(*edev->fp_array), GFP_KERNEL);
2358         if (!edev->fp_array) {
2359                 DP_NOTICE(edev, "fp array allocation failed\n");
2360                 goto err;
2361         }
2362
2363         for_each_rss(i) {
2364                 fp = &edev->fp_array[i];
2365
2366                 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2367                 if (!fp->sb_info) {
2368                         DP_NOTICE(edev, "sb info struct allocation failed\n");
2369                         goto err;
2370                 }
2371
2372                 fp->rxq = kcalloc(1, sizeof(*fp->rxq), GFP_KERNEL);
2373                 if (!fp->rxq) {
2374                         DP_NOTICE(edev, "RXQ struct allocation failed\n");
2375                         goto err;
2376                 }
2377
2378                 fp->txqs = kcalloc(edev->num_tc, sizeof(*fp->txqs), GFP_KERNEL);
2379                 if (!fp->txqs) {
2380                         DP_NOTICE(edev, "TXQ array allocation failed\n");
2381                         goto err;
2382                 }
2383         }
2384
2385         return 0;
2386 err:
2387         qede_free_fp_array(edev);
2388         return -ENOMEM;
2389 }
2390
2391 static void qede_sp_task(struct work_struct *work)
2392 {
2393         struct qede_dev *edev = container_of(work, struct qede_dev,
2394                                              sp_task.work);
2395         struct qed_dev *cdev = edev->cdev;
2396
2397         mutex_lock(&edev->qede_lock);
2398
2399         if (edev->state == QEDE_STATE_OPEN) {
2400                 if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
2401                         qede_config_rx_mode(edev->ndev);
2402         }
2403
2404         if (test_and_clear_bit(QEDE_SP_VXLAN_PORT_CONFIG, &edev->sp_flags)) {
2405                 struct qed_tunn_params tunn_params;
2406
2407                 memset(&tunn_params, 0, sizeof(tunn_params));
2408                 tunn_params.update_vxlan_port = 1;
2409                 tunn_params.vxlan_port = edev->vxlan_dst_port;
2410                 qed_ops->tunn_config(cdev, &tunn_params);
2411         }
2412
2413         if (test_and_clear_bit(QEDE_SP_GENEVE_PORT_CONFIG, &edev->sp_flags)) {
2414                 struct qed_tunn_params tunn_params;
2415
2416                 memset(&tunn_params, 0, sizeof(tunn_params));
2417                 tunn_params.update_geneve_port = 1;
2418                 tunn_params.geneve_port = edev->geneve_dst_port;
2419                 qed_ops->tunn_config(cdev, &tunn_params);
2420         }
2421
2422         mutex_unlock(&edev->qede_lock);
2423 }
2424
2425 static void qede_update_pf_params(struct qed_dev *cdev)
2426 {
2427         struct qed_pf_params pf_params;
2428
2429         /* 64 rx + 64 tx */
2430         memset(&pf_params, 0, sizeof(struct qed_pf_params));
2431         pf_params.eth_pf_params.num_cons = 128;
2432         qed_ops->common->update_pf_params(cdev, &pf_params);
2433 }
2434
2435 enum qede_probe_mode {
2436         QEDE_PROBE_NORMAL,
2437 };
2438
2439 static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
2440                         bool is_vf, enum qede_probe_mode mode)
2441 {
2442         struct qed_probe_params probe_params;
2443         struct qed_slowpath_params params;
2444         struct qed_dev_eth_info dev_info;
2445         struct qede_dev *edev;
2446         struct qed_dev *cdev;
2447         int rc;
2448
2449         if (unlikely(dp_level & QED_LEVEL_INFO))
2450                 pr_notice("Starting qede probe\n");
2451
2452         memset(&probe_params, 0, sizeof(probe_params));
2453         probe_params.protocol = QED_PROTOCOL_ETH;
2454         probe_params.dp_module = dp_module;
2455         probe_params.dp_level = dp_level;
2456         probe_params.is_vf = is_vf;
2457         cdev = qed_ops->common->probe(pdev, &probe_params);
2458         if (!cdev) {
2459                 rc = -ENODEV;
2460                 goto err0;
2461         }
2462
2463         qede_update_pf_params(cdev);
2464
2465         /* Start the Slowpath-process */
2466         memset(&params, 0, sizeof(struct qed_slowpath_params));
2467         params.int_mode = QED_INT_MODE_MSIX;
2468         params.drv_major = QEDE_MAJOR_VERSION;
2469         params.drv_minor = QEDE_MINOR_VERSION;
2470         params.drv_rev = QEDE_REVISION_VERSION;
2471         params.drv_eng = QEDE_ENGINEERING_VERSION;
2472         strlcpy(params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
2473         rc = qed_ops->common->slowpath_start(cdev, &params);
2474         if (rc) {
2475                 pr_notice("Cannot start slowpath\n");
2476                 goto err1;
2477         }
2478
2479         /* Learn information crucial for qede to progress */
2480         rc = qed_ops->fill_dev_info(cdev, &dev_info);
2481         if (rc)
2482                 goto err2;
2483
2484         edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
2485                                    dp_level);
2486         if (!edev) {
2487                 rc = -ENOMEM;
2488                 goto err2;
2489         }
2490
2491         if (is_vf)
2492                 edev->flags |= QEDE_FLAG_IS_VF;
2493
2494         qede_init_ndev(edev);
2495
2496         rc = register_netdev(edev->ndev);
2497         if (rc) {
2498                 DP_NOTICE(edev, "Cannot register net-device\n");
2499                 goto err3;
2500         }
2501
2502         edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
2503
2504         edev->ops->register_ops(cdev, &qede_ll_ops, edev);
2505
2506         INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
2507         mutex_init(&edev->qede_lock);
2508
2509         DP_INFO(edev, "Ending successfully qede probe\n");
2510
2511         return 0;
2512
2513 err3:
2514         free_netdev(edev->ndev);
2515 err2:
2516         qed_ops->common->slowpath_stop(cdev);
2517 err1:
2518         qed_ops->common->remove(cdev);
2519 err0:
2520         return rc;
2521 }
2522
2523 static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2524 {
2525         bool is_vf = false;
2526         u32 dp_module = 0;
2527         u8 dp_level = 0;
2528
2529         switch ((enum qede_pci_private)id->driver_data) {
2530         case QEDE_PRIVATE_VF:
2531                 if (debug & QED_LOG_VERBOSE_MASK)
2532                         dev_err(&pdev->dev, "Probing a VF\n");
2533                 is_vf = true;
2534                 break;
2535         default:
2536                 if (debug & QED_LOG_VERBOSE_MASK)
2537                         dev_err(&pdev->dev, "Probing a PF\n");
2538         }
2539
2540         qede_config_debug(debug, &dp_module, &dp_level);
2541
2542         return __qede_probe(pdev, dp_module, dp_level, is_vf,
2543                             QEDE_PROBE_NORMAL);
2544 }
2545
2546 enum qede_remove_mode {
2547         QEDE_REMOVE_NORMAL,
2548 };
2549
2550 static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
2551 {
2552         struct net_device *ndev = pci_get_drvdata(pdev);
2553         struct qede_dev *edev = netdev_priv(ndev);
2554         struct qed_dev *cdev = edev->cdev;
2555
2556         DP_INFO(edev, "Starting qede_remove\n");
2557
2558         cancel_delayed_work_sync(&edev->sp_task);
2559         unregister_netdev(ndev);
2560
2561         edev->ops->common->set_power_state(cdev, PCI_D0);
2562
2563         pci_set_drvdata(pdev, NULL);
2564
2565         free_netdev(ndev);
2566
2567         /* Use global ops since we've freed edev */
2568         qed_ops->common->slowpath_stop(cdev);
2569         qed_ops->common->remove(cdev);
2570
2571         pr_notice("Ending successfully qede_remove\n");
2572 }
2573
2574 static void qede_remove(struct pci_dev *pdev)
2575 {
2576         __qede_remove(pdev, QEDE_REMOVE_NORMAL);
2577 }
2578
2579 /* -------------------------------------------------------------------------
2580  * START OF LOAD / UNLOAD
2581  * -------------------------------------------------------------------------
2582  */
2583
2584 static int qede_set_num_queues(struct qede_dev *edev)
2585 {
2586         int rc;
2587         u16 rss_num;
2588
2589         /* Setup queues according to possible resources*/
2590         if (edev->req_rss)
2591                 rss_num = edev->req_rss;
2592         else
2593                 rss_num = netif_get_num_default_rss_queues() *
2594                           edev->dev_info.common.num_hwfns;
2595
2596         rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
2597
2598         rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
2599         if (rc > 0) {
2600                 /* Managed to request interrupts for our queues */
2601                 edev->num_rss = rc;
2602                 DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
2603                         QEDE_RSS_CNT(edev), rss_num);
2604                 rc = 0;
2605         }
2606         return rc;
2607 }
2608
2609 static void qede_free_mem_sb(struct qede_dev *edev,
2610                              struct qed_sb_info *sb_info)
2611 {
2612         if (sb_info->sb_virt)
2613                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
2614                                   (void *)sb_info->sb_virt, sb_info->sb_phys);
2615 }
2616
2617 /* This function allocates fast-path status block memory */
2618 static int qede_alloc_mem_sb(struct qede_dev *edev,
2619                              struct qed_sb_info *sb_info,
2620                              u16 sb_id)
2621 {
2622         struct status_block *sb_virt;
2623         dma_addr_t sb_phys;
2624         int rc;
2625
2626         sb_virt = dma_alloc_coherent(&edev->pdev->dev,
2627                                      sizeof(*sb_virt),
2628                                      &sb_phys, GFP_KERNEL);
2629         if (!sb_virt) {
2630                 DP_ERR(edev, "Status block allocation failed\n");
2631                 return -ENOMEM;
2632         }
2633
2634         rc = edev->ops->common->sb_init(edev->cdev, sb_info,
2635                                         sb_virt, sb_phys, sb_id,
2636                                         QED_SB_TYPE_L2_QUEUE);
2637         if (rc) {
2638                 DP_ERR(edev, "Status block initialization failed\n");
2639                 dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
2640                                   sb_virt, sb_phys);
2641                 return rc;
2642         }
2643
2644         return 0;
2645 }
2646
2647 static void qede_free_rx_buffers(struct qede_dev *edev,
2648                                  struct qede_rx_queue *rxq)
2649 {
2650         u16 i;
2651
2652         for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
2653                 struct sw_rx_data *rx_buf;
2654                 struct page *data;
2655
2656                 rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
2657                 data = rx_buf->data;
2658
2659                 dma_unmap_page(&edev->pdev->dev,
2660                                rx_buf->mapping,
2661                                PAGE_SIZE, DMA_FROM_DEVICE);
2662
2663                 rx_buf->data = NULL;
2664                 __free_page(data);
2665         }
2666 }
2667
2668 static void qede_free_sge_mem(struct qede_dev *edev,
2669                               struct qede_rx_queue *rxq) {
2670         int i;
2671
2672         if (edev->gro_disable)
2673                 return;
2674
2675         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
2676                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
2677                 struct sw_rx_data *replace_buf = &tpa_info->replace_buf;
2678
2679                 if (replace_buf->data) {
2680                         dma_unmap_page(&edev->pdev->dev,
2681                                        replace_buf->mapping,
2682                                        PAGE_SIZE, DMA_FROM_DEVICE);
2683                         __free_page(replace_buf->data);
2684                 }
2685         }
2686 }
2687
2688 static void qede_free_mem_rxq(struct qede_dev *edev,
2689                               struct qede_rx_queue *rxq)
2690 {
2691         qede_free_sge_mem(edev, rxq);
2692
2693         /* Free rx buffers */
2694         qede_free_rx_buffers(edev, rxq);
2695
2696         /* Free the parallel SW ring */
2697         kfree(rxq->sw_rx_ring);
2698
2699         /* Free the real RQ ring used by FW */
2700         edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
2701         edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
2702 }
2703
2704 static int qede_alloc_rx_buffer(struct qede_dev *edev,
2705                                 struct qede_rx_queue *rxq)
2706 {
2707         struct sw_rx_data *sw_rx_data;
2708         struct eth_rx_bd *rx_bd;
2709         dma_addr_t mapping;
2710         struct page *data;
2711         u16 rx_buf_size;
2712
2713         rx_buf_size = rxq->rx_buf_size;
2714
2715         data = alloc_pages(GFP_ATOMIC, 0);
2716         if (unlikely(!data)) {
2717                 DP_NOTICE(edev, "Failed to allocate Rx data [page]\n");
2718                 return -ENOMEM;
2719         }
2720
2721         /* Map the entire page as it would be used
2722          * for multiple RX buffer segment size mapping.
2723          */
2724         mapping = dma_map_page(&edev->pdev->dev, data, 0,
2725                                PAGE_SIZE, DMA_FROM_DEVICE);
2726         if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
2727                 __free_page(data);
2728                 DP_NOTICE(edev, "Failed to map Rx buffer\n");
2729                 return -ENOMEM;
2730         }
2731
2732         sw_rx_data = &rxq->sw_rx_ring[rxq->sw_rx_prod & NUM_RX_BDS_MAX];
2733         sw_rx_data->page_offset = 0;
2734         sw_rx_data->data = data;
2735         sw_rx_data->mapping = mapping;
2736
2737         /* Advance PROD and get BD pointer */
2738         rx_bd = (struct eth_rx_bd *)qed_chain_produce(&rxq->rx_bd_ring);
2739         WARN_ON(!rx_bd);
2740         rx_bd->addr.hi = cpu_to_le32(upper_32_bits(mapping));
2741         rx_bd->addr.lo = cpu_to_le32(lower_32_bits(mapping));
2742
2743         rxq->sw_rx_prod++;
2744
2745         return 0;
2746 }
2747
2748 static int qede_alloc_sge_mem(struct qede_dev *edev,
2749                               struct qede_rx_queue *rxq)
2750 {
2751         dma_addr_t mapping;
2752         int i;
2753
2754         if (edev->gro_disable)
2755                 return 0;
2756
2757         if (edev->ndev->mtu > PAGE_SIZE) {
2758                 edev->gro_disable = 1;
2759                 return 0;
2760         }
2761
2762         for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
2763                 struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
2764                 struct sw_rx_data *replace_buf = &tpa_info->replace_buf;
2765
2766                 replace_buf->data = alloc_pages(GFP_ATOMIC, 0);
2767                 if (unlikely(!replace_buf->data)) {
2768                         DP_NOTICE(edev,
2769                                   "Failed to allocate TPA skb pool [replacement buffer]\n");
2770                         goto err;
2771                 }
2772
2773                 mapping = dma_map_page(&edev->pdev->dev, replace_buf->data, 0,
2774                                        rxq->rx_buf_size, DMA_FROM_DEVICE);
2775                 if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
2776                         DP_NOTICE(edev,
2777                                   "Failed to map TPA replacement buffer\n");
2778                         goto err;
2779                 }
2780
2781                 replace_buf->mapping = mapping;
2782                 tpa_info->replace_buf.page_offset = 0;
2783
2784                 tpa_info->replace_buf_mapping = mapping;
2785                 tpa_info->agg_state = QEDE_AGG_STATE_NONE;
2786         }
2787
2788         return 0;
2789 err:
2790         qede_free_sge_mem(edev, rxq);
2791         edev->gro_disable = 1;
2792         return -ENOMEM;
2793 }
2794
2795 /* This function allocates all memory needed per Rx queue */
2796 static int qede_alloc_mem_rxq(struct qede_dev *edev,
2797                               struct qede_rx_queue *rxq)
2798 {
2799         int i, rc, size;
2800
2801         rxq->num_rx_buffers = edev->q_num_rx_buffers;
2802
2803         rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD +
2804                            edev->ndev->mtu;
2805         if (rxq->rx_buf_size > PAGE_SIZE)
2806                 rxq->rx_buf_size = PAGE_SIZE;
2807
2808         /* Segment size to spilt a page in multiple equal parts */
2809         rxq->rx_buf_seg_size = roundup_pow_of_two(rxq->rx_buf_size);
2810
2811         /* Allocate the parallel driver ring for Rx buffers */
2812         size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
2813         rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
2814         if (!rxq->sw_rx_ring) {
2815                 DP_ERR(edev, "Rx buffers ring allocation failed\n");
2816                 rc = -ENOMEM;
2817                 goto err;
2818         }
2819
2820         /* Allocate FW Rx ring  */
2821         rc = edev->ops->common->chain_alloc(edev->cdev,
2822                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
2823                                             QED_CHAIN_MODE_NEXT_PTR,
2824                                             RX_RING_SIZE,
2825                                             sizeof(struct eth_rx_bd),
2826                                             &rxq->rx_bd_ring);
2827
2828         if (rc)
2829                 goto err;
2830
2831         /* Allocate FW completion ring */
2832         rc = edev->ops->common->chain_alloc(edev->cdev,
2833                                             QED_CHAIN_USE_TO_CONSUME,
2834                                             QED_CHAIN_MODE_PBL,
2835                                             RX_RING_SIZE,
2836                                             sizeof(union eth_rx_cqe),
2837                                             &rxq->rx_comp_ring);
2838         if (rc)
2839                 goto err;
2840
2841         /* Allocate buffers for the Rx ring */
2842         for (i = 0; i < rxq->num_rx_buffers; i++) {
2843                 rc = qede_alloc_rx_buffer(edev, rxq);
2844                 if (rc) {
2845                         DP_ERR(edev,
2846                                "Rx buffers allocation failed at index %d\n", i);
2847                         goto err;
2848                 }
2849         }
2850
2851         rc = qede_alloc_sge_mem(edev, rxq);
2852 err:
2853         return rc;
2854 }
2855
2856 static void qede_free_mem_txq(struct qede_dev *edev,
2857                               struct qede_tx_queue *txq)
2858 {
2859         /* Free the parallel SW ring */
2860         kfree(txq->sw_tx_ring);
2861
2862         /* Free the real RQ ring used by FW */
2863         edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
2864 }
2865
2866 /* This function allocates all memory needed per Tx queue */
2867 static int qede_alloc_mem_txq(struct qede_dev *edev,
2868                               struct qede_tx_queue *txq)
2869 {
2870         int size, rc;
2871         union eth_tx_bd_types *p_virt;
2872
2873         txq->num_tx_buffers = edev->q_num_tx_buffers;
2874
2875         /* Allocate the parallel driver ring for Tx buffers */
2876         size = sizeof(*txq->sw_tx_ring) * NUM_TX_BDS_MAX;
2877         txq->sw_tx_ring = kzalloc(size, GFP_KERNEL);
2878         if (!txq->sw_tx_ring) {
2879                 DP_NOTICE(edev, "Tx buffers ring allocation failed\n");
2880                 goto err;
2881         }
2882
2883         rc = edev->ops->common->chain_alloc(edev->cdev,
2884                                             QED_CHAIN_USE_TO_CONSUME_PRODUCE,
2885                                             QED_CHAIN_MODE_PBL,
2886                                             NUM_TX_BDS_MAX,
2887                                             sizeof(*p_virt),
2888                                             &txq->tx_pbl);
2889         if (rc)
2890                 goto err;
2891
2892         return 0;
2893
2894 err:
2895         qede_free_mem_txq(edev, txq);
2896         return -ENOMEM;
2897 }
2898
2899 /* This function frees all memory of a single fp */
2900 static void qede_free_mem_fp(struct qede_dev *edev,
2901                              struct qede_fastpath *fp)
2902 {
2903         int tc;
2904
2905         qede_free_mem_sb(edev, fp->sb_info);
2906
2907         qede_free_mem_rxq(edev, fp->rxq);
2908
2909         for (tc = 0; tc < edev->num_tc; tc++)
2910                 qede_free_mem_txq(edev, &fp->txqs[tc]);
2911 }
2912
2913 /* This function allocates all memory needed for a single fp (i.e. an entity
2914  * which contains status block, one rx queue and multiple per-TC tx queues.
2915  */
2916 static int qede_alloc_mem_fp(struct qede_dev *edev,
2917                              struct qede_fastpath *fp)
2918 {
2919         int rc, tc;
2920
2921         rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->rss_id);
2922         if (rc)
2923                 goto err;
2924
2925         rc = qede_alloc_mem_rxq(edev, fp->rxq);
2926         if (rc)
2927                 goto err;
2928
2929         for (tc = 0; tc < edev->num_tc; tc++) {
2930                 rc = qede_alloc_mem_txq(edev, &fp->txqs[tc]);
2931                 if (rc)
2932                         goto err;
2933         }
2934
2935         return 0;
2936 err:
2937         return rc;
2938 }
2939
2940 static void qede_free_mem_load(struct qede_dev *edev)
2941 {
2942         int i;
2943
2944         for_each_rss(i) {
2945                 struct qede_fastpath *fp = &edev->fp_array[i];
2946
2947                 qede_free_mem_fp(edev, fp);
2948         }
2949 }
2950
2951 /* This function allocates all qede memory at NIC load. */
2952 static int qede_alloc_mem_load(struct qede_dev *edev)
2953 {
2954         int rc = 0, rss_id;
2955
2956         for (rss_id = 0; rss_id < QEDE_RSS_CNT(edev); rss_id++) {
2957                 struct qede_fastpath *fp = &edev->fp_array[rss_id];
2958
2959                 rc = qede_alloc_mem_fp(edev, fp);
2960                 if (rc) {
2961                         DP_ERR(edev,
2962                                "Failed to allocate memory for fastpath - rss id = %d\n",
2963                                rss_id);
2964                         qede_free_mem_load(edev);
2965                         return rc;
2966                 }
2967         }
2968
2969         return 0;
2970 }
2971
2972 /* This function inits fp content and resets the SB, RXQ and TXQ structures */
2973 static void qede_init_fp(struct qede_dev *edev)
2974 {
2975         int rss_id, txq_index, tc;
2976         struct qede_fastpath *fp;
2977
2978         for_each_rss(rss_id) {
2979                 fp = &edev->fp_array[rss_id];
2980
2981                 fp->edev = edev;
2982                 fp->rss_id = rss_id;
2983
2984                 memset((void *)&fp->napi, 0, sizeof(fp->napi));
2985
2986                 memset((void *)fp->sb_info, 0, sizeof(*fp->sb_info));
2987
2988                 memset((void *)fp->rxq, 0, sizeof(*fp->rxq));
2989                 fp->rxq->rxq_id = rss_id;
2990
2991                 memset((void *)fp->txqs, 0, (edev->num_tc * sizeof(*fp->txqs)));
2992                 for (tc = 0; tc < edev->num_tc; tc++) {
2993                         txq_index = tc * QEDE_RSS_CNT(edev) + rss_id;
2994                         fp->txqs[tc].index = txq_index;
2995                 }
2996
2997                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
2998                          edev->ndev->name, rss_id);
2999         }
3000
3001         edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO);
3002 }
3003
3004 static int qede_set_real_num_queues(struct qede_dev *edev)
3005 {
3006         int rc = 0;
3007
3008         rc = netif_set_real_num_tx_queues(edev->ndev, QEDE_TSS_CNT(edev));
3009         if (rc) {
3010                 DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
3011                 return rc;
3012         }
3013         rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_CNT(edev));
3014         if (rc) {
3015                 DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
3016                 return rc;
3017         }
3018
3019         return 0;
3020 }
3021
3022 static void qede_napi_disable_remove(struct qede_dev *edev)
3023 {
3024         int i;
3025
3026         for_each_rss(i) {
3027                 napi_disable(&edev->fp_array[i].napi);
3028
3029                 netif_napi_del(&edev->fp_array[i].napi);
3030         }
3031 }
3032
3033 static void qede_napi_add_enable(struct qede_dev *edev)
3034 {
3035         int i;
3036
3037         /* Add NAPI objects */
3038         for_each_rss(i) {
3039                 netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
3040                                qede_poll, NAPI_POLL_WEIGHT);
3041                 napi_enable(&edev->fp_array[i].napi);
3042         }
3043 }
3044
3045 static void qede_sync_free_irqs(struct qede_dev *edev)
3046 {
3047         int i;
3048
3049         for (i = 0; i < edev->int_info.used_cnt; i++) {
3050                 if (edev->int_info.msix_cnt) {
3051                         synchronize_irq(edev->int_info.msix[i].vector);
3052                         free_irq(edev->int_info.msix[i].vector,
3053                                  &edev->fp_array[i]);
3054                 } else {
3055                         edev->ops->common->simd_handler_clean(edev->cdev, i);
3056                 }
3057         }
3058
3059         edev->int_info.used_cnt = 0;
3060 }
3061
3062 static int qede_req_msix_irqs(struct qede_dev *edev)
3063 {
3064         int i, rc;
3065
3066         /* Sanitize number of interrupts == number of prepared RSS queues */
3067         if (QEDE_RSS_CNT(edev) > edev->int_info.msix_cnt) {
3068                 DP_ERR(edev,
3069                        "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
3070                        QEDE_RSS_CNT(edev), edev->int_info.msix_cnt);
3071                 return -EINVAL;
3072         }
3073
3074         for (i = 0; i < QEDE_RSS_CNT(edev); i++) {
3075                 rc = request_irq(edev->int_info.msix[i].vector,
3076                                  qede_msix_fp_int, 0, edev->fp_array[i].name,
3077                                  &edev->fp_array[i]);
3078                 if (rc) {
3079                         DP_ERR(edev, "Request fp %d irq failed\n", i);
3080                         qede_sync_free_irqs(edev);
3081                         return rc;
3082                 }
3083                 DP_VERBOSE(edev, NETIF_MSG_INTR,
3084                            "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
3085                            edev->fp_array[i].name, i,
3086                            &edev->fp_array[i]);
3087                 edev->int_info.used_cnt++;
3088         }
3089
3090         return 0;
3091 }
3092
3093 static void qede_simd_fp_handler(void *cookie)
3094 {
3095         struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
3096
3097         napi_schedule_irqoff(&fp->napi);
3098 }
3099
3100 static int qede_setup_irqs(struct qede_dev *edev)
3101 {
3102         int i, rc = 0;
3103
3104         /* Learn Interrupt configuration */
3105         rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
3106         if (rc)
3107                 return rc;
3108
3109         if (edev->int_info.msix_cnt) {
3110                 rc = qede_req_msix_irqs(edev);
3111                 if (rc)
3112                         return rc;
3113                 edev->ndev->irq = edev->int_info.msix[0].vector;
3114         } else {
3115                 const struct qed_common_ops *ops;
3116
3117                 /* qed should learn receive the RSS ids and callbacks */
3118                 ops = edev->ops->common;
3119                 for (i = 0; i < QEDE_RSS_CNT(edev); i++)
3120                         ops->simd_handler_config(edev->cdev,
3121                                                  &edev->fp_array[i], i,
3122                                                  qede_simd_fp_handler);
3123                 edev->int_info.used_cnt = QEDE_RSS_CNT(edev);
3124         }
3125         return 0;
3126 }
3127
3128 static int qede_drain_txq(struct qede_dev *edev,
3129                           struct qede_tx_queue *txq,
3130                           bool allow_drain)
3131 {
3132         int rc, cnt = 1000;
3133
3134         while (txq->sw_tx_cons != txq->sw_tx_prod) {
3135                 if (!cnt) {
3136                         if (allow_drain) {
3137                                 DP_NOTICE(edev,
3138                                           "Tx queue[%d] is stuck, requesting MCP to drain\n",
3139                                           txq->index);
3140                                 rc = edev->ops->common->drain(edev->cdev);
3141                                 if (rc)
3142                                         return rc;
3143                                 return qede_drain_txq(edev, txq, false);
3144                         }
3145                         DP_NOTICE(edev,
3146                                   "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
3147                                   txq->index, txq->sw_tx_prod,
3148                                   txq->sw_tx_cons);
3149                         return -ENODEV;
3150                 }
3151                 cnt--;
3152                 usleep_range(1000, 2000);
3153                 barrier();
3154         }
3155
3156         /* FW finished processing, wait for HW to transmit all tx packets */
3157         usleep_range(1000, 2000);
3158
3159         return 0;
3160 }
3161
3162 static int qede_stop_queues(struct qede_dev *edev)
3163 {
3164         struct qed_update_vport_params vport_update_params;
3165         struct qed_dev *cdev = edev->cdev;
3166         int rc, tc, i;
3167
3168         /* Disable the vport */
3169         memset(&vport_update_params, 0, sizeof(vport_update_params));
3170         vport_update_params.vport_id = 0;
3171         vport_update_params.update_vport_active_flg = 1;
3172         vport_update_params.vport_active_flg = 0;
3173         vport_update_params.update_rss_flg = 0;
3174
3175         rc = edev->ops->vport_update(cdev, &vport_update_params);
3176         if (rc) {
3177                 DP_ERR(edev, "Failed to update vport\n");
3178                 return rc;
3179         }
3180
3181         /* Flush Tx queues. If needed, request drain from MCP */
3182         for_each_rss(i) {
3183                 struct qede_fastpath *fp = &edev->fp_array[i];
3184
3185                 for (tc = 0; tc < edev->num_tc; tc++) {
3186                         struct qede_tx_queue *txq = &fp->txqs[tc];
3187
3188                         rc = qede_drain_txq(edev, txq, true);
3189                         if (rc)
3190                                 return rc;
3191                 }
3192         }
3193
3194         /* Stop all Queues in reverse order*/
3195         for (i = QEDE_RSS_CNT(edev) - 1; i >= 0; i--) {
3196                 struct qed_stop_rxq_params rx_params;
3197
3198                 /* Stop the Tx Queue(s)*/
3199                 for (tc = 0; tc < edev->num_tc; tc++) {
3200                         struct qed_stop_txq_params tx_params;
3201
3202                         tx_params.rss_id = i;
3203                         tx_params.tx_queue_id = tc * QEDE_RSS_CNT(edev) + i;
3204                         rc = edev->ops->q_tx_stop(cdev, &tx_params);
3205                         if (rc) {
3206                                 DP_ERR(edev, "Failed to stop TXQ #%d\n",
3207                                        tx_params.tx_queue_id);
3208                                 return rc;
3209                         }
3210                 }
3211
3212                 /* Stop the Rx Queue*/
3213                 memset(&rx_params, 0, sizeof(rx_params));
3214                 rx_params.rss_id = i;
3215                 rx_params.rx_queue_id = i;
3216
3217                 rc = edev->ops->q_rx_stop(cdev, &rx_params);
3218                 if (rc) {
3219                         DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
3220                         return rc;
3221                 }
3222         }
3223
3224         /* Stop the vport */
3225         rc = edev->ops->vport_stop(cdev, 0);
3226         if (rc)
3227                 DP_ERR(edev, "Failed to stop VPORT\n");
3228
3229         return rc;
3230 }
3231
3232 static int qede_start_queues(struct qede_dev *edev)
3233 {
3234         int rc, tc, i;
3235         int vlan_removal_en = 1;
3236         struct qed_dev *cdev = edev->cdev;
3237         struct qed_update_vport_params vport_update_params;
3238         struct qed_queue_start_common_params q_params;
3239         struct qed_dev_info *qed_info = &edev->dev_info.common;
3240         struct qed_start_vport_params start = {0};
3241         bool reset_rss_indir = false;
3242
3243         if (!edev->num_rss) {
3244                 DP_ERR(edev,
3245                        "Cannot update V-VPORT as active as there are no Rx queues\n");
3246                 return -EINVAL;
3247         }
3248
3249         start.gro_enable = !edev->gro_disable;
3250         start.mtu = edev->ndev->mtu;
3251         start.vport_id = 0;
3252         start.drop_ttl0 = true;
3253         start.remove_inner_vlan = vlan_removal_en;
3254
3255         rc = edev->ops->vport_start(cdev, &start);
3256
3257         if (rc) {
3258                 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
3259                 return rc;
3260         }
3261
3262         DP_VERBOSE(edev, NETIF_MSG_IFUP,
3263                    "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
3264                    start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
3265
3266         for_each_rss(i) {
3267                 struct qede_fastpath *fp = &edev->fp_array[i];
3268                 dma_addr_t phys_table = fp->rxq->rx_comp_ring.pbl.p_phys_table;
3269
3270                 memset(&q_params, 0, sizeof(q_params));
3271                 q_params.rss_id = i;
3272                 q_params.queue_id = i;
3273                 q_params.vport_id = 0;
3274                 q_params.sb = fp->sb_info->igu_sb_id;
3275                 q_params.sb_idx = RX_PI;
3276
3277                 rc = edev->ops->q_rx_start(cdev, &q_params,
3278                                            fp->rxq->rx_buf_size,
3279                                            fp->rxq->rx_bd_ring.p_phys_addr,
3280                                            phys_table,
3281                                            fp->rxq->rx_comp_ring.page_cnt,
3282                                            &fp->rxq->hw_rxq_prod_addr);
3283                 if (rc) {
3284                         DP_ERR(edev, "Start RXQ #%d failed %d\n", i, rc);
3285                         return rc;
3286                 }
3287
3288                 fp->rxq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[RX_PI];
3289
3290                 qede_update_rx_prod(edev, fp->rxq);
3291
3292                 for (tc = 0; tc < edev->num_tc; tc++) {
3293                         struct qede_tx_queue *txq = &fp->txqs[tc];
3294                         int txq_index = tc * QEDE_RSS_CNT(edev) + i;
3295
3296                         memset(&q_params, 0, sizeof(q_params));
3297                         q_params.rss_id = i;
3298                         q_params.queue_id = txq_index;
3299                         q_params.vport_id = 0;
3300                         q_params.sb = fp->sb_info->igu_sb_id;
3301                         q_params.sb_idx = TX_PI(tc);
3302
3303                         rc = edev->ops->q_tx_start(cdev, &q_params,
3304                                                    txq->tx_pbl.pbl.p_phys_table,
3305                                                    txq->tx_pbl.page_cnt,
3306                                                    &txq->doorbell_addr);
3307                         if (rc) {
3308                                 DP_ERR(edev, "Start TXQ #%d failed %d\n",
3309                                        txq_index, rc);
3310                                 return rc;
3311                         }
3312
3313                         txq->hw_cons_ptr =
3314                                 &fp->sb_info->sb_virt->pi_array[TX_PI(tc)];
3315                         SET_FIELD(txq->tx_db.data.params,
3316                                   ETH_DB_DATA_DEST, DB_DEST_XCM);
3317                         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD,
3318                                   DB_AGG_CMD_SET);
3319                         SET_FIELD(txq->tx_db.data.params,
3320                                   ETH_DB_DATA_AGG_VAL_SEL,
3321                                   DQ_XCM_ETH_TX_BD_PROD_CMD);
3322
3323                         txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
3324                 }
3325         }
3326
3327         /* Prepare and send the vport enable */
3328         memset(&vport_update_params, 0, sizeof(vport_update_params));
3329         vport_update_params.vport_id = start.vport_id;
3330         vport_update_params.update_vport_active_flg = 1;
3331         vport_update_params.vport_active_flg = 1;
3332
3333         if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) &&
3334             qed_info->tx_switching) {
3335                 vport_update_params.update_tx_switching_flg = 1;
3336                 vport_update_params.tx_switching_flg = 1;
3337         }
3338
3339         /* Fill struct with RSS params */
3340         if (QEDE_RSS_CNT(edev) > 1) {
3341                 vport_update_params.update_rss_flg = 1;
3342
3343                 /* Need to validate current RSS config uses valid entries */
3344                 for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
3345                         if (edev->rss_params.rss_ind_table[i] >=
3346                             edev->num_rss) {
3347                                 reset_rss_indir = true;
3348                                 break;
3349                         }
3350                 }
3351
3352                 if (!(edev->rss_params_inited & QEDE_RSS_INDIR_INITED) ||
3353                     reset_rss_indir) {
3354                         u16 val;
3355
3356                         for (i = 0; i < QED_RSS_IND_TABLE_SIZE; i++) {
3357                                 u16 indir_val;
3358
3359                                 val = QEDE_RSS_CNT(edev);
3360                                 indir_val = ethtool_rxfh_indir_default(i, val);
3361                                 edev->rss_params.rss_ind_table[i] = indir_val;
3362                         }
3363                         edev->rss_params_inited |= QEDE_RSS_INDIR_INITED;
3364                 }
3365
3366                 if (!(edev->rss_params_inited & QEDE_RSS_KEY_INITED)) {
3367                         netdev_rss_key_fill(edev->rss_params.rss_key,
3368                                             sizeof(edev->rss_params.rss_key));
3369                         edev->rss_params_inited |= QEDE_RSS_KEY_INITED;
3370                 }
3371
3372                 if (!(edev->rss_params_inited & QEDE_RSS_CAPS_INITED)) {
3373                         edev->rss_params.rss_caps = QED_RSS_IPV4 |
3374                                                     QED_RSS_IPV6 |
3375                                                     QED_RSS_IPV4_TCP |
3376                                                     QED_RSS_IPV6_TCP;
3377                         edev->rss_params_inited |= QEDE_RSS_CAPS_INITED;
3378                 }
3379
3380                 memcpy(&vport_update_params.rss_params, &edev->rss_params,
3381                        sizeof(vport_update_params.rss_params));
3382         } else {
3383                 memset(&vport_update_params.rss_params, 0,
3384                        sizeof(vport_update_params.rss_params));
3385         }
3386
3387         rc = edev->ops->vport_update(cdev, &vport_update_params);
3388         if (rc) {
3389                 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
3390                 return rc;
3391         }
3392
3393         return 0;
3394 }
3395
3396 static int qede_set_mcast_rx_mac(struct qede_dev *edev,
3397                                  enum qed_filter_xcast_params_type opcode,
3398                                  unsigned char *mac, int num_macs)
3399 {
3400         struct qed_filter_params filter_cmd;
3401         int i;
3402
3403         memset(&filter_cmd, 0, sizeof(filter_cmd));
3404         filter_cmd.type = QED_FILTER_TYPE_MCAST;
3405         filter_cmd.filter.mcast.type = opcode;
3406         filter_cmd.filter.mcast.num = num_macs;
3407
3408         for (i = 0; i < num_macs; i++, mac += ETH_ALEN)
3409                 ether_addr_copy(filter_cmd.filter.mcast.mac[i], mac);
3410
3411         return edev->ops->filter_config(edev->cdev, &filter_cmd);
3412 }
3413
3414 enum qede_unload_mode {
3415         QEDE_UNLOAD_NORMAL,
3416 };
3417
3418 static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
3419 {
3420         struct qed_link_params link_params;
3421         int rc;
3422
3423         DP_INFO(edev, "Starting qede unload\n");
3424
3425         mutex_lock(&edev->qede_lock);
3426         edev->state = QEDE_STATE_CLOSED;
3427
3428         /* Close OS Tx */
3429         netif_tx_disable(edev->ndev);
3430         netif_carrier_off(edev->ndev);
3431
3432         /* Reset the link */
3433         memset(&link_params, 0, sizeof(link_params));
3434         link_params.link_up = false;
3435         edev->ops->common->set_link(edev->cdev, &link_params);
3436         rc = qede_stop_queues(edev);
3437         if (rc) {
3438                 qede_sync_free_irqs(edev);
3439                 goto out;
3440         }
3441
3442         DP_INFO(edev, "Stopped Queues\n");
3443
3444         qede_vlan_mark_nonconfigured(edev);
3445         edev->ops->fastpath_stop(edev->cdev);
3446
3447         /* Release the interrupts */
3448         qede_sync_free_irqs(edev);
3449         edev->ops->common->set_fp_int(edev->cdev, 0);
3450
3451         qede_napi_disable_remove(edev);
3452
3453         qede_free_mem_load(edev);
3454         qede_free_fp_array(edev);
3455
3456 out:
3457         mutex_unlock(&edev->qede_lock);
3458         DP_INFO(edev, "Ending qede unload\n");
3459 }
3460
3461 enum qede_load_mode {
3462         QEDE_LOAD_NORMAL,
3463 };
3464
3465 static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
3466 {
3467         struct qed_link_params link_params;
3468         struct qed_link_output link_output;
3469         int rc;
3470
3471         DP_INFO(edev, "Starting qede load\n");
3472
3473         rc = qede_set_num_queues(edev);
3474         if (rc)
3475                 goto err0;
3476
3477         rc = qede_alloc_fp_array(edev);
3478         if (rc)
3479                 goto err0;
3480
3481         qede_init_fp(edev);
3482
3483         rc = qede_alloc_mem_load(edev);
3484         if (rc)
3485                 goto err1;
3486         DP_INFO(edev, "Allocated %d RSS queues on %d TC/s\n",
3487                 QEDE_RSS_CNT(edev), edev->num_tc);
3488
3489         rc = qede_set_real_num_queues(edev);
3490         if (rc)
3491                 goto err2;
3492
3493         qede_napi_add_enable(edev);
3494         DP_INFO(edev, "Napi added and enabled\n");
3495
3496         rc = qede_setup_irqs(edev);
3497         if (rc)
3498                 goto err3;
3499         DP_INFO(edev, "Setup IRQs succeeded\n");
3500
3501         rc = qede_start_queues(edev);
3502         if (rc)
3503                 goto err4;
3504         DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
3505
3506         /* Add primary mac and set Rx filters */
3507         ether_addr_copy(edev->primary_mac, edev->ndev->dev_addr);
3508
3509         mutex_lock(&edev->qede_lock);
3510         edev->state = QEDE_STATE_OPEN;
3511         mutex_unlock(&edev->qede_lock);
3512
3513         /* Program un-configured VLANs */
3514         qede_configure_vlan_filters(edev);
3515
3516         /* Ask for link-up using current configuration */
3517         memset(&link_params, 0, sizeof(link_params));
3518         link_params.link_up = true;
3519         edev->ops->common->set_link(edev->cdev, &link_params);
3520
3521         /* Query whether link is already-up */
3522         memset(&link_output, 0, sizeof(link_output));
3523         edev->ops->common->get_link(edev->cdev, &link_output);
3524         qede_link_update(edev, &link_output);
3525
3526         DP_INFO(edev, "Ending successfully qede load\n");
3527
3528         return 0;
3529
3530 err4:
3531         qede_sync_free_irqs(edev);
3532         memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
3533 err3:
3534         qede_napi_disable_remove(edev);
3535 err2:
3536         qede_free_mem_load(edev);
3537 err1:
3538         edev->ops->common->set_fp_int(edev->cdev, 0);
3539         qede_free_fp_array(edev);
3540         edev->num_rss = 0;
3541 err0:
3542         return rc;
3543 }
3544
3545 void qede_reload(struct qede_dev *edev,
3546                  void (*func)(struct qede_dev *, union qede_reload_args *),
3547                  union qede_reload_args *args)
3548 {
3549         qede_unload(edev, QEDE_UNLOAD_NORMAL);
3550         /* Call function handler to update parameters
3551          * needed for function load.
3552          */
3553         if (func)
3554                 func(edev, args);
3555
3556         qede_load(edev, QEDE_LOAD_NORMAL);
3557
3558         mutex_lock(&edev->qede_lock);
3559         qede_config_rx_mode(edev->ndev);
3560         mutex_unlock(&edev->qede_lock);
3561 }
3562
3563 /* called with rtnl_lock */
3564 static int qede_open(struct net_device *ndev)
3565 {
3566         struct qede_dev *edev = netdev_priv(ndev);
3567         int rc;
3568
3569         netif_carrier_off(ndev);
3570
3571         edev->ops->common->set_power_state(edev->cdev, PCI_D0);
3572
3573         rc = qede_load(edev, QEDE_LOAD_NORMAL);
3574
3575         if (rc)
3576                 return rc;
3577
3578 #ifdef CONFIG_QEDE_VXLAN
3579         vxlan_get_rx_port(ndev);
3580 #endif
3581 #ifdef CONFIG_QEDE_GENEVE
3582         geneve_get_rx_port(ndev);
3583 #endif
3584         return 0;
3585 }
3586
3587 static int qede_close(struct net_device *ndev)
3588 {
3589         struct qede_dev *edev = netdev_priv(ndev);
3590
3591         qede_unload(edev, QEDE_UNLOAD_NORMAL);
3592
3593         return 0;
3594 }
3595
3596 static void qede_link_update(void *dev, struct qed_link_output *link)
3597 {
3598         struct qede_dev *edev = dev;
3599
3600         if (!netif_running(edev->ndev)) {
3601                 DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
3602                 return;
3603         }
3604
3605         if (link->link_up) {
3606                 if (!netif_carrier_ok(edev->ndev)) {
3607                         DP_NOTICE(edev, "Link is up\n");
3608                         netif_tx_start_all_queues(edev->ndev);
3609                         netif_carrier_on(edev->ndev);
3610                 }
3611         } else {
3612                 if (netif_carrier_ok(edev->ndev)) {
3613                         DP_NOTICE(edev, "Link is down\n");
3614                         netif_tx_disable(edev->ndev);
3615                         netif_carrier_off(edev->ndev);
3616                 }
3617         }
3618 }
3619
3620 static int qede_set_mac_addr(struct net_device *ndev, void *p)
3621 {
3622         struct qede_dev *edev = netdev_priv(ndev);
3623         struct sockaddr *addr = p;
3624         int rc;
3625
3626         ASSERT_RTNL(); /* @@@TBD To be removed */
3627
3628         DP_INFO(edev, "Set_mac_addr called\n");
3629
3630         if (!is_valid_ether_addr(addr->sa_data)) {
3631                 DP_NOTICE(edev, "The MAC address is not valid\n");
3632                 return -EFAULT;
3633         }
3634
3635         if (!edev->ops->check_mac(edev->cdev, addr->sa_data)) {
3636                 DP_NOTICE(edev, "qed prevents setting MAC\n");
3637                 return -EINVAL;
3638         }
3639
3640         ether_addr_copy(ndev->dev_addr, addr->sa_data);
3641
3642         if (!netif_running(ndev))  {
3643                 DP_NOTICE(edev, "The device is currently down\n");
3644                 return 0;
3645         }
3646
3647         /* Remove the previous primary mac */
3648         rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
3649                                    edev->primary_mac);
3650         if (rc)
3651                 return rc;
3652
3653         /* Add MAC filter according to the new unicast HW MAC address */
3654         ether_addr_copy(edev->primary_mac, ndev->dev_addr);
3655         return qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
3656                                       edev->primary_mac);
3657 }
3658
3659 static int
3660 qede_configure_mcast_filtering(struct net_device *ndev,
3661                                enum qed_filter_rx_mode_type *accept_flags)
3662 {
3663         struct qede_dev *edev = netdev_priv(ndev);
3664         unsigned char *mc_macs, *temp;
3665         struct netdev_hw_addr *ha;
3666         int rc = 0, mc_count;
3667         size_t size;
3668
3669         size = 64 * ETH_ALEN;
3670
3671         mc_macs = kzalloc(size, GFP_KERNEL);
3672         if (!mc_macs) {
3673                 DP_NOTICE(edev,
3674                           "Failed to allocate memory for multicast MACs\n");
3675                 rc = -ENOMEM;
3676                 goto exit;
3677         }
3678
3679         temp = mc_macs;
3680
3681         /* Remove all previously configured MAC filters */
3682         rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_DEL,
3683                                    mc_macs, 1);
3684         if (rc)
3685                 goto exit;
3686
3687         netif_addr_lock_bh(ndev);
3688
3689         mc_count = netdev_mc_count(ndev);
3690         if (mc_count < 64) {
3691                 netdev_for_each_mc_addr(ha, ndev) {
3692                         ether_addr_copy(temp, ha->addr);
3693                         temp += ETH_ALEN;
3694                 }
3695         }
3696
3697         netif_addr_unlock_bh(ndev);
3698
3699         /* Check for all multicast @@@TBD resource allocation */
3700         if ((ndev->flags & IFF_ALLMULTI) ||
3701             (mc_count > 64)) {
3702                 if (*accept_flags == QED_FILTER_RX_MODE_TYPE_REGULAR)
3703                         *accept_flags = QED_FILTER_RX_MODE_TYPE_MULTI_PROMISC;
3704         } else {
3705                 /* Add all multicast MAC filters */
3706                 rc = qede_set_mcast_rx_mac(edev, QED_FILTER_XCAST_TYPE_ADD,
3707                                            mc_macs, mc_count);
3708         }
3709
3710 exit:
3711         kfree(mc_macs);
3712         return rc;
3713 }
3714
3715 static void qede_set_rx_mode(struct net_device *ndev)
3716 {
3717         struct qede_dev *edev = netdev_priv(ndev);
3718
3719         DP_INFO(edev, "qede_set_rx_mode called\n");
3720
3721         if (edev->state != QEDE_STATE_OPEN) {
3722                 DP_INFO(edev,
3723                         "qede_set_rx_mode called while interface is down\n");
3724         } else {
3725                 set_bit(QEDE_SP_RX_MODE, &edev->sp_flags);
3726                 schedule_delayed_work(&edev->sp_task, 0);
3727         }
3728 }
3729
3730 /* Must be called with qede_lock held */
3731 static void qede_config_rx_mode(struct net_device *ndev)
3732 {
3733         enum qed_filter_rx_mode_type accept_flags = QED_FILTER_TYPE_UCAST;
3734         struct qede_dev *edev = netdev_priv(ndev);
3735         struct qed_filter_params rx_mode;
3736         unsigned char *uc_macs, *temp;
3737         struct netdev_hw_addr *ha;
3738         int rc, uc_count;
3739         size_t size;
3740
3741         netif_addr_lock_bh(ndev);
3742
3743         uc_count = netdev_uc_count(ndev);
3744         size = uc_count * ETH_ALEN;
3745
3746         uc_macs = kzalloc(size, GFP_ATOMIC);
3747         if (!uc_macs) {
3748                 DP_NOTICE(edev, "Failed to allocate memory for unicast MACs\n");
3749                 netif_addr_unlock_bh(ndev);
3750                 return;
3751         }
3752
3753         temp = uc_macs;
3754         netdev_for_each_uc_addr(ha, ndev) {
3755                 ether_addr_copy(temp, ha->addr);
3756                 temp += ETH_ALEN;
3757         }
3758
3759         netif_addr_unlock_bh(ndev);
3760
3761         /* Configure the struct for the Rx mode */
3762         memset(&rx_mode, 0, sizeof(struct qed_filter_params));
3763         rx_mode.type = QED_FILTER_TYPE_RX_MODE;
3764
3765         /* Remove all previous unicast secondary macs and multicast macs
3766          * (configrue / leave the primary mac)
3767          */
3768         rc = qede_set_ucast_rx_mac(edev, QED_FILTER_XCAST_TYPE_REPLACE,
3769                                    edev->primary_mac);
3770         if (rc)
3771                 goto out;
3772
3773         /* Check for promiscuous */
3774         if ((ndev->flags & IFF_PROMISC) ||
3775             (uc_count > 15)) { /* @@@TBD resource allocation - 1 */
3776                 accept_flags = QED_FILTER_RX_MODE_TYPE_PROMISC;
3777         } else {
3778                 /* Add MAC filters according to the unicast secondary macs */
3779                 int i;
3780
3781                 temp = uc_macs;
3782                 for (i = 0; i < uc_count; i++) {
3783                         rc = qede_set_ucast_rx_mac(edev,
3784                                                    QED_FILTER_XCAST_TYPE_ADD,
3785                                                    temp);
3786                         if (rc)
3787                                 goto out;
3788
3789                         temp += ETH_ALEN;
3790                 }
3791
3792                 rc = qede_configure_mcast_filtering(ndev, &accept_flags);
3793                 if (rc)
3794                         goto out;
3795         }
3796
3797         /* take care of VLAN mode */
3798         if (ndev->flags & IFF_PROMISC) {
3799                 qede_config_accept_any_vlan(edev, true);
3800         } else if (!edev->non_configured_vlans) {
3801                 /* It's possible that accept_any_vlan mode is set due to a
3802                  * previous setting of IFF_PROMISC. If vlan credits are
3803                  * sufficient, disable accept_any_vlan.
3804                  */
3805                 qede_config_accept_any_vlan(edev, false);
3806         }
3807
3808         rx_mode.filter.accept_flags = accept_flags;
3809         edev->ops->filter_config(edev->cdev, &rx_mode);
3810 out:
3811         kfree(uc_macs);
3812 }