kernel/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c

   1 /* bnx2x_cmn.c: QLogic Everest network driver.
   2  *
   3  * Copyright (c) 2007-2013 Broadcom Corporation
   4  * Copyright (c) 2014 QLogic Corporation
   5  * All rights reserved
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation.
  10  *
  11  * Maintained by: Ariel Elior <ariel.elior@qlogic.com>
  12  * Written by: Eliezer Tamir
  13  * Based on code from Michael Chan's bnx2 driver
  14  * UDP CSUM errata workaround by Arik Gendelman
  15  * Slowpath and fastpath rework by Vladislav Zolotarov
  16  * Statistics and Link management by Yitchak Gertner
  17  *
  18  */
  19
  20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  21
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/ip.h>
  26 #include <linux/crash_dump.h>
  27 #include <net/tcp.h>
  28 #include <net/ipv6.h>
  29 #include <net/ip6_checksum.h>
  30 #include <net/busy_poll.h>
  31 #include <linux/prefetch.h>
  32 #include "bnx2x_cmn.h"
  33 #include "bnx2x_init.h"
  34 #include "bnx2x_sp.h"
  35
  36 static void bnx2x_free_fp_mem_cnic(struct bnx2x *bp);
  37 static int bnx2x_alloc_fp_mem_cnic(struct bnx2x *bp);
  38 static int bnx2x_alloc_fp_mem(struct bnx2x *bp);
  39 static int bnx2x_poll(struct napi_struct *napi, int budget);
  40
  41 static void bnx2x_add_all_napi_cnic(struct bnx2x *bp)
  42 {
  43         int i;
  44
  45         /* Add NAPI objects */
  46         for_each_rx_queue_cnic(bp, i) {
  47                 netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
  48                                bnx2x_poll, NAPI_POLL_WEIGHT);
  49                 napi_hash_add(&bnx2x_fp(bp, i, napi));
  50         }
  51 }
  52
  53 static void bnx2x_add_all_napi(struct bnx2x *bp)
  54 {
  55         int i;
  56
  57         /* Add NAPI objects */
  58         for_each_eth_queue(bp, i) {
  59                 netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
  60                                bnx2x_poll, NAPI_POLL_WEIGHT);
  61                 napi_hash_add(&bnx2x_fp(bp, i, napi));
  62         }
  63 }
  64
  65 static int bnx2x_calc_num_queues(struct bnx2x *bp)
  66 {
  67         int nq = bnx2x_num_queues ? : netif_get_num_default_rss_queues();
  68
  69         /* Reduce memory usage in kdump environment by using only one queue */
  70         if (is_kdump_kernel())
  71                 nq = 1;
  72
  73         nq = clamp(nq, 1, BNX2X_MAX_QUEUES(bp));
  74         return nq;
  75 }
  76
  77 /**
  78  * bnx2x_move_fp - move content of the fastpath structure.
  79  *
  80  * @bp:         driver handle
  81  * @from:       source FP index
  82  * @to:         destination FP index
  83  *
  84  * Makes sure the contents of the bp->fp[to].napi is kept
  85  * intact. This is done by first copying the napi struct from
  86  * the target to the source, and then mem copying the entire
  87  * source onto the target. Update txdata pointers and related
  88  * content.
  89  */
  90 static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
  91 {
  92         struct bnx2x_fastpath *from_fp = &bp->fp[from];
  93         struct bnx2x_fastpath *to_fp = &bp->fp[to];
  94         struct bnx2x_sp_objs *from_sp_objs = &bp->sp_objs[from];
  95         struct bnx2x_sp_objs *to_sp_objs = &bp->sp_objs[to];
  96         struct bnx2x_fp_stats *from_fp_stats = &bp->fp_stats[from];
  97         struct bnx2x_fp_stats *to_fp_stats = &bp->fp_stats[to];
  98         int old_max_eth_txqs, new_max_eth_txqs;
  99         int old_txdata_index = 0, new_txdata_index = 0;
 100         struct bnx2x_agg_info *old_tpa_info = to_fp->tpa_info;
 101
 102         /* Copy the NAPI object as it has been already initialized */
 103         from_fp->napi = to_fp->napi;
 104
 105         /* Move bnx2x_fastpath contents */
 106         memcpy(to_fp, from_fp, sizeof(*to_fp));
 107         to_fp->index = to;
 108
 109         /* Retain the tpa_info of the original `to' version as we don't want
 110          * 2 FPs to contain the same tpa_info pointer.
 111          */
 112         to_fp->tpa_info = old_tpa_info;
 113
 114         /* move sp_objs contents as well, as their indices match fp ones */
 115         memcpy(to_sp_objs, from_sp_objs, sizeof(*to_sp_objs));
 116
 117         /* move fp_stats contents as well, as their indices match fp ones */
 118         memcpy(to_fp_stats, from_fp_stats, sizeof(*to_fp_stats));
 119
 120         /* Update txdata pointers in fp and move txdata content accordingly:
 121          * Each fp consumes 'max_cos' txdata structures, so the index should be
 122          * decremented by max_cos x delta.
 123          */
 124
 125         old_max_eth_txqs = BNX2X_NUM_ETH_QUEUES(bp) * (bp)->max_cos;
 126         new_max_eth_txqs = (BNX2X_NUM_ETH_QUEUES(bp) - from + to) *
 127                                 (bp)->max_cos;
 128         if (from == FCOE_IDX(bp)) {
 129                 old_txdata_index = old_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
 130                 new_txdata_index = new_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
 131         }
 132
 133         memcpy(&bp->bnx2x_txq[new_txdata_index],
 134                &bp->bnx2x_txq[old_txdata_index],
 135                sizeof(struct bnx2x_fp_txdata));
 136         to_fp->txdata_ptr[0] = &bp->bnx2x_txq[new_txdata_index];
 137 }
 138
 139 /**
 140  * bnx2x_fill_fw_str - Fill buffer with FW version string.
 141  *
 142  * @bp:        driver handle
 143  * @buf:       character buffer to fill with the fw name
 144  * @buf_len:   length of the above buffer
 145  *
 146  */
 147 void bnx2x_fill_fw_str(struct bnx2x *bp, char *buf, size_t buf_len)
 148 {
 149         if (IS_PF(bp)) {
 150                 u8 phy_fw_ver[PHY_FW_VER_LEN];
 151
 152                 phy_fw_ver[0] = '\0';
 153                 bnx2x_get_ext_phy_fw_version(&bp->link_params,
 154                                              phy_fw_ver, PHY_FW_VER_LEN);
 155                 strlcpy(buf, bp->fw_ver, buf_len);
 156                 snprintf(buf + strlen(bp->fw_ver), 32 - strlen(bp->fw_ver),
 157                          "bc %d.%d.%d%s%s",
 158                          (bp->common.bc_ver & 0xff0000) >> 16,
 159                          (bp->common.bc_ver & 0xff00) >> 8,
 160                          (bp->common.bc_ver & 0xff),
 161                          ((phy_fw_ver[0] != '\0') ? " phy " : ""), phy_fw_ver);
 162         } else {
 163                 bnx2x_vf_fill_fw_str(bp, buf, buf_len);
 164         }
 165 }
 166
 167 /**
 168  * bnx2x_shrink_eth_fp - guarantees fastpath structures stay intact
 169  *
 170  * @bp: driver handle
 171  * @delta:      number of eth queues which were not allocated
 172  */
 173 static void bnx2x_shrink_eth_fp(struct bnx2x *bp, int delta)
 174 {
 175         int i, cos, old_eth_num = BNX2X_NUM_ETH_QUEUES(bp);
 176
 177         /* Queue pointer cannot be re-set on an fp-basis, as moving pointer
 178          * backward along the array could cause memory to be overridden
 179          */
 180         for (cos = 1; cos < bp->max_cos; cos++) {
 181                 for (i = 0; i < old_eth_num - delta; i++) {
 182                         struct bnx2x_fastpath *fp = &bp->fp[i];
 183                         int new_idx = cos * (old_eth_num - delta) + i;
 184
 185                         memcpy(&bp->bnx2x_txq[new_idx], fp->txdata_ptr[cos],
 186                                sizeof(struct bnx2x_fp_txdata));
 187                         fp->txdata_ptr[cos] = &bp->bnx2x_txq[new_idx];
 188                 }
 189         }
 190 }
 191
 192 int bnx2x_load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
 193
 194 /* free skb in the packet ring at pos idx
 195  * return idx of last bd freed
 196  */
 197 static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
 198                              u16 idx, unsigned int *pkts_compl,
 199                              unsigned int *bytes_compl)
 200 {
 201         struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
 202         struct eth_tx_start_bd *tx_start_bd;
 203         struct eth_tx_bd *tx_data_bd;
 204         struct sk_buff *skb = tx_buf->skb;
 205         u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
 206         int nbd;
 207         u16 split_bd_len = 0;
 208
 209         /* prefetch skb end pointer to speedup dev_kfree_skb() */
 210         prefetch(&skb->end);
 211
 212         DP(NETIF_MSG_TX_DONE, "fp[%d]: pkt_idx %d  buff @(%p)->skb %p\n",
 213            txdata->txq_index, idx, tx_buf, skb);
 214
 215         tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
 216
 217         nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
 218 #ifdef BNX2X_STOP_ON_ERROR
 219         if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
 220                 BNX2X_ERR("BAD nbd!\n");
 221                 bnx2x_panic();
 222         }
 223 #endif
 224         new_cons = nbd + tx_buf->first_bd;
 225
 226         /* Get the next bd */
 227         bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 228
 229         /* Skip a parse bd... */
 230         --nbd;
 231         bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 232
 233         if (tx_buf->flags & BNX2X_HAS_SECOND_PBD) {
 234                 /* Skip second parse bd... */
 235                 --nbd;
 236                 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 237         }
 238
 239         /* TSO headers+data bds share a common mapping. See bnx2x_tx_split() */
 240         if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
 241                 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
 242                 split_bd_len = BD_UNMAP_LEN(tx_data_bd);
 243                 --nbd;
 244                 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 245         }
 246
 247         /* unmap first bd */
 248         dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
 249                          BD_UNMAP_LEN(tx_start_bd) + split_bd_len,
 250                          DMA_TO_DEVICE);
 251
 252         /* now free frags */
 253         while (nbd > 0) {
 254
 255                 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
 256                 dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
 257                                BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
 258                 if (--nbd)
 259                         bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
 260         }
 261
 262         /* release skb */
 263         WARN_ON(!skb);
 264         if (likely(skb)) {
 265                 (*pkts_compl)++;
 266                 (*bytes_compl) += skb->len;
 267                 dev_kfree_skb_any(skb);
 268         }
 269
 270         tx_buf->first_bd = 0;
 271         tx_buf->skb = NULL;
 272
 273         return new_cons;
 274 }
 275
 276 int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
 277 {
 278         struct netdev_queue *txq;
 279         u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
 280         unsigned int pkts_compl = 0, bytes_compl = 0;
 281
 282 #ifdef BNX2X_STOP_ON_ERROR
 283         if (unlikely(bp->panic))
 284                 return -1;
 285 #endif
 286
 287         txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
 288         hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
 289         sw_cons = txdata->tx_pkt_cons;
 290
 291         while (sw_cons != hw_cons) {
 292                 u16 pkt_cons;
 293
 294                 pkt_cons = TX_BD(sw_cons);
 295
 296                 DP(NETIF_MSG_TX_DONE,
 297                    "queue[%d]: hw_cons %u  sw_cons %u  pkt_cons %u\n",
 298                    txdata->txq_index, hw_cons, sw_cons, pkt_cons);
 299
 300                 bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons,
 301                                             &pkts_compl, &bytes_compl);
 302
 303                 sw_cons++;
 304         }
 305
 306         netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
 307
 308         txdata->tx_pkt_cons = sw_cons;
 309         txdata->tx_bd_cons = bd_cons;
 310
 311         /* Need to make the tx_bd_cons update visible to start_xmit()
 312          * before checking for netif_tx_queue_stopped().  Without the
 313          * memory barrier, there is a small possibility that
 314          * start_xmit() will miss it and cause the queue to be stopped
 315          * forever.
 316          * On the other hand we need an rmb() here to ensure the proper
 317          * ordering of bit testing in the following
 318          * netif_tx_queue_stopped(txq) call.
 319          */
 320         smp_mb();
 321
 322         if (unlikely(netif_tx_queue_stopped(txq))) {
 323                 /* Taking tx_lock() is needed to prevent re-enabling the queue
 324                  * while it's empty. This could have happen if rx_action() gets
 325                  * suspended in bnx2x_tx_int() after the condition before
 326                  * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
 327                  *
 328                  * stops the queue->sees fresh tx_bd_cons->releases the queue->
 329                  * sends some packets consuming the whole queue again->
 330                  * stops the queue
 331                  */
 332
 333                 __netif_tx_lock(txq, smp_processor_id());
 334
 335                 if ((netif_tx_queue_stopped(txq)) &&
 336                     (bp->state == BNX2X_STATE_OPEN) &&
 337                     (bnx2x_tx_avail(bp, txdata) >= MAX_DESC_PER_TX_PKT))
 338                         netif_tx_wake_queue(txq);
 339
 340                 __netif_tx_unlock(txq);
 341         }
 342         return 0;
 343 }
 344
 345 static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
 346                                              u16 idx)
 347 {
 348         u16 last_max = fp->last_max_sge;
 349
 350         if (SUB_S16(idx, last_max) > 0)
 351                 fp->last_max_sge = idx;
 352 }
 353
 354 static inline void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
 355                                          u16 sge_len,
 356                                          struct eth_end_agg_rx_cqe *cqe)
 357 {
 358         struct bnx2x *bp = fp->bp;
 359         u16 last_max, last_elem, first_elem;
 360         u16 delta = 0;
 361         u16 i;
 362
 363         if (!sge_len)
 364                 return;
 365
 366         /* First mark all used pages */
 367         for (i = 0; i < sge_len; i++)
 368                 BIT_VEC64_CLEAR_BIT(fp->sge_mask,
 369                         RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[i])));
 370
 371         DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n",
 372            sge_len - 1, le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
 373
 374         /* Here we assume that the last SGE index is the biggest */
 375         prefetch((void *)(fp->sge_mask));
 376         bnx2x_update_last_max_sge(fp,
 377                 le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
 378
 379         last_max = RX_SGE(fp->last_max_sge);
 380         last_elem = last_max >> BIT_VEC64_ELEM_SHIFT;
 381         first_elem = RX_SGE(fp->rx_sge_prod) >> BIT_VEC64_ELEM_SHIFT;
 382
 383         /* If ring is not full */
 384         if (last_elem + 1 != first_elem)
 385                 last_elem++;
 386
 387         /* Now update the prod */
 388         for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
 389                 if (likely(fp->sge_mask[i]))
 390                         break;
 391
 392                 fp->sge_mask[i] = BIT_VEC64_ELEM_ONE_MASK;
 393                 delta += BIT_VEC64_ELEM_SZ;
 394         }
 395
 396         if (delta > 0) {
 397                 fp->rx_sge_prod += delta;
 398                 /* clear page-end entries */
 399                 bnx2x_clear_sge_mask_next_elems(fp);
 400         }
 401
 402         DP(NETIF_MSG_RX_STATUS,
 403            "fp->last_max_sge = %d  fp->rx_sge_prod = %d\n",
 404            fp->last_max_sge, fp->rx_sge_prod);
 405 }
 406
 407 /* Get Toeplitz hash value in the skb using the value from the
 408  * CQE (calculated by HW).
 409  */
 410 static u32 bnx2x_get_rxhash(const struct bnx2x *bp,
 411                             const struct eth_fast_path_rx_cqe *cqe,
 412                             enum pkt_hash_types *rxhash_type)
 413 {
 414         /* Get Toeplitz hash from CQE */
 415         if ((bp->dev->features & NETIF_F_RXHASH) &&
 416             (cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) {
 417                 enum eth_rss_hash_type htype;
 418
 419                 htype = cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_TYPE;
 420                 *rxhash_type = ((htype == TCP_IPV4_HASH_TYPE) ||
 421                                 (htype == TCP_IPV6_HASH_TYPE)) ?
 422                                PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3;
 423
 424                 return le32_to_cpu(cqe->rss_hash_result);
 425         }
 426         *rxhash_type = PKT_HASH_TYPE_NONE;
 427         return 0;
 428 }
 429
 430 static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
 431                             u16 cons, u16 prod,
 432                             struct eth_fast_path_rx_cqe *cqe)
 433 {
 434         struct bnx2x *bp = fp->bp;
 435         struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
 436         struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
 437         struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
 438         dma_addr_t mapping;
 439         struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
 440         struct sw_rx_bd *first_buf = &tpa_info->first_buf;
 441
 442         /* print error if current state != stop */
 443         if (tpa_info->tpa_state != BNX2X_TPA_STOP)
 444                 BNX2X_ERR("start of bin not in stop [%d]\n", queue);
 445
 446         /* Try to map an empty data buffer from the aggregation info  */
 447         mapping = dma_map_single(&bp->pdev->dev,
 448                                  first_buf->data + NET_SKB_PAD,
 449                                  fp->rx_buf_size, DMA_FROM_DEVICE);
 450         /*
 451          *  ...if it fails - move the skb from the consumer to the producer
 452          *  and set the current aggregation state as ERROR to drop it
 453          *  when TPA_STOP arrives.
 454          */
 455
 456         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
 457                 /* Move the BD from the consumer to the producer */
 458                 bnx2x_reuse_rx_data(fp, cons, prod);
 459                 tpa_info->tpa_state = BNX2X_TPA_ERROR;
 460                 return;
 461         }
 462
 463         /* move empty data from pool to prod */
 464         prod_rx_buf->data = first_buf->data;
 465         dma_unmap_addr_set(prod_rx_buf, mapping, mapping);
 466         /* point prod_bd to new data */
 467         prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
 468         prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
 469
 470         /* move partial skb from cons to pool (don't unmap yet) */
 471         *first_buf = *cons_rx_buf;
 472
 473         /* mark bin state as START */
 474         tpa_info->parsing_flags =
 475                 le16_to_cpu(cqe->pars_flags.flags);
 476         tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
 477         tpa_info->tpa_state = BNX2X_TPA_START;
 478         tpa_info->len_on_bd = le16_to_cpu(cqe->len_on_bd);
 479         tpa_info->placement_offset = cqe->placement_offset;
 480         tpa_info->rxhash = bnx2x_get_rxhash(bp, cqe, &tpa_info->rxhash_type);
 481         if (fp->mode == TPA_MODE_GRO) {
 482                 u16 gro_size = le16_to_cpu(cqe->pkt_len_or_gro_seg_len);
 483                 tpa_info->full_page = SGE_PAGES / gro_size * gro_size;
 484                 tpa_info->gro_size = gro_size;
 485         }
 486
 487 #ifdef BNX2X_STOP_ON_ERROR
 488         fp->tpa_queue_used |= (1 << queue);
 489         DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
 490            fp->tpa_queue_used);
 491 #endif
 492 }
 493
 494 /* Timestamp option length allowed for TPA aggregation:
 495  *
 496  *              nop nop kind length echo val
 497  */
 498 #define TPA_TSTAMP_OPT_LEN      12
 499 /**
 500  * bnx2x_set_gro_params - compute GRO values
 501  *
 502  * @skb:                packet skb
 503  * @parsing_flags:      parsing flags from the START CQE
 504  * @len_on_bd:          total length of the first packet for the
 505  *                      aggregation.
 506  * @pkt_len:            length of all segments
 507  *
 508  * Approximate value of the MSS for this aggregation calculated using
 509  * the first packet of it.
 510  * Compute number of aggregated segments, and gso_type.
 511  */
 512 static void bnx2x_set_gro_params(struct sk_buff *skb, u16 parsing_flags,
 513                                  u16 len_on_bd, unsigned int pkt_len,
 514                                  u16 num_of_coalesced_segs)
 515 {
 516         /* TPA aggregation won't have either IP options or TCP options
 517          * other than timestamp or IPv6 extension headers.
 518          */
 519         u16 hdrs_len = ETH_HLEN + sizeof(struct tcphdr);
 520
 521         if (GET_FLAG(parsing_flags, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
 522             PRS_FLAG_OVERETH_IPV6) {
 523                 hdrs_len += sizeof(struct ipv6hdr);
 524                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
 525         } else {
 526                 hdrs_len += sizeof(struct iphdr);
 527                 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
 528         }
 529
 530         /* Check if there was a TCP timestamp, if there is it's will
 531          * always be 12 bytes length: nop nop kind length echo val.
 532          *
 533          * Otherwise FW would close the aggregation.
 534          */
 535         if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
 536                 hdrs_len += TPA_TSTAMP_OPT_LEN;
 537
 538         skb_shinfo(skb)->gso_size = len_on_bd - hdrs_len;
 539
 540         /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
 541          * to skb_shinfo(skb)->gso_segs
 542          */
 543         NAPI_GRO_CB(skb)->count = num_of_coalesced_segs;
 544 }
 545
 546 static int bnx2x_alloc_rx_sge(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 547                               u16 index, gfp_t gfp_mask)
 548 {
 549         struct sw_rx_page *sw_buf = &fp->rx_page_ring[index];
 550         struct eth_rx_sge *sge = &fp->rx_sge_ring[index];
 551         struct bnx2x_alloc_pool *pool = &fp->page_pool;
 552         dma_addr_t mapping;
 553
 554         if (!pool->page || (PAGE_SIZE - pool->offset) < SGE_PAGE_SIZE) {
 555
 556                 /* put page reference used by the memory pool, since we
 557                  * won't be using this page as the mempool anymore.
 558                  */
 559                 if (pool->page)
 560                         put_page(pool->page);
 561
 562                 pool->page = alloc_pages(gfp_mask, PAGES_PER_SGE_SHIFT);
 563                 if (unlikely(!pool->page)) {
 564                         BNX2X_ERR("Can't alloc sge\n");
 565                         return -ENOMEM;
 566                 }
 567
 568                 pool->offset = 0;
 569         }
 570
 571         mapping = dma_map_page(&bp->pdev->dev, pool->page,
 572                                pool->offset, SGE_PAGE_SIZE, DMA_FROM_DEVICE);
 573         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
 574                 BNX2X_ERR("Can't map sge\n");
 575                 return -ENOMEM;
 576         }
 577
 578         get_page(pool->page);
 579         sw_buf->page = pool->page;
 580         sw_buf->offset = pool->offset;
 581
 582         dma_unmap_addr_set(sw_buf, mapping, mapping);
 583
 584         sge->addr_hi = cpu_to_le32(U64_HI(mapping));
 585         sge->addr_lo = cpu_to_le32(U64_LO(mapping));
 586
 587         pool->offset += SGE_PAGE_SIZE;
 588
 589         return 0;
 590 }
 591
 592 static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 593                                struct bnx2x_agg_info *tpa_info,
 594                                u16 pages,
 595                                struct sk_buff *skb,
 596                                struct eth_end_agg_rx_cqe *cqe,
 597                                u16 cqe_idx)
 598 {
 599         struct sw_rx_page *rx_pg, old_rx_pg;
 600         u32 i, frag_len, frag_size;
 601         int err, j, frag_id = 0;
 602         u16 len_on_bd = tpa_info->len_on_bd;
 603         u16 full_page = 0, gro_size = 0;
 604
 605         frag_size = le16_to_cpu(cqe->pkt_len) - len_on_bd;
 606
 607         if (fp->mode == TPA_MODE_GRO) {
 608                 gro_size = tpa_info->gro_size;
 609                 full_page = tpa_info->full_page;
 610         }
 611
 612         /* This is needed in order to enable forwarding support */
 613         if (frag_size)
 614                 bnx2x_set_gro_params(skb, tpa_info->parsing_flags, len_on_bd,
 615                                      le16_to_cpu(cqe->pkt_len),
 616                                      le16_to_cpu(cqe->num_of_coalesced_segs));
 617
 618 #ifdef BNX2X_STOP_ON_ERROR
 619         if (pages > min_t(u32, 8, MAX_SKB_FRAGS) * SGE_PAGES) {
 620                 BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
 621                           pages, cqe_idx);
 622                 BNX2X_ERR("cqe->pkt_len = %d\n", cqe->pkt_len);
 623                 bnx2x_panic();
 624                 return -EINVAL;
 625         }
 626 #endif
 627
 628         /* Run through the SGL and compose the fragmented skb */
 629         for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
 630                 u16 sge_idx = RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[j]));
 631
 632                 /* FW gives the indices of the SGE as if the ring is an array
 633                    (meaning that "next" element will consume 2 indices) */
 634                 if (fp->mode == TPA_MODE_GRO)
 635                         frag_len = min_t(u32, frag_size, (u32)full_page);
 636                 else /* LRO */
 637                         frag_len = min_t(u32, frag_size, (u32)SGE_PAGES);
 638
 639                 rx_pg = &fp->rx_page_ring[sge_idx];
 640                 old_rx_pg = *rx_pg;
 641
 642                 /* If we fail to allocate a substitute page, we simply stop
 643                    where we are and drop the whole packet */
 644                 err = bnx2x_alloc_rx_sge(bp, fp, sge_idx, GFP_ATOMIC);
 645                 if (unlikely(err)) {
 646                         bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
 647                         return err;
 648                 }
 649
 650                 dma_unmap_page(&bp->pdev->dev,
 651                                dma_unmap_addr(&old_rx_pg, mapping),
 652                                SGE_PAGE_SIZE, DMA_FROM_DEVICE);
 653                 /* Add one frag and update the appropriate fields in the skb */
 654                 if (fp->mode == TPA_MODE_LRO)
 655                         skb_fill_page_desc(skb, j, old_rx_pg.page,
 656                                            old_rx_pg.offset, frag_len);
 657                 else { /* GRO */
 658                         int rem;
 659                         int offset = 0;
 660                         for (rem = frag_len; rem > 0; rem -= gro_size) {
 661                                 int len = rem > gro_size ? gro_size : rem;
 662                                 skb_fill_page_desc(skb, frag_id++,
 663                                                    old_rx_pg.page,
 664                                                    old_rx_pg.offset + offset,
 665                                                    len);
 666                                 if (offset)
 667                                         get_page(old_rx_pg.page);
 668                                 offset += len;
 669                         }
 670                 }
 671
 672                 skb->data_len += frag_len;
 673                 skb->truesize += SGE_PAGES;
 674                 skb->len += frag_len;
 675
 676                 frag_size -= frag_len;
 677         }
 678
 679         return 0;
 680 }
 681
 682 static void bnx2x_frag_free(const struct bnx2x_fastpath *fp, void *data)
 683 {
 684         if (fp->rx_frag_size)
 685                 skb_free_frag(data);
 686         else
 687                 kfree(data);
 688 }
 689
 690 static void *bnx2x_frag_alloc(const struct bnx2x_fastpath *fp, gfp_t gfp_mask)
 691 {
 692         if (fp->rx_frag_size) {
 693                 /* GFP_KERNEL allocations are used only during initialization */
 694                 if (unlikely(gfpflags_allow_blocking(gfp_mask)))
 695                         return (void *)__get_free_page(gfp_mask);
 696
 697                 return netdev_alloc_frag(fp->rx_frag_size);
 698         }
 699
 700         return kmalloc(fp->rx_buf_size + NET_SKB_PAD, gfp_mask);
 701 }
 702
 703 #ifdef CONFIG_INET
 704 static void bnx2x_gro_ip_csum(struct bnx2x *bp, struct sk_buff *skb)
 705 {
 706         const struct iphdr *iph = ip_hdr(skb);
 707         struct tcphdr *th;
 708
 709         skb_set_transport_header(skb, sizeof(struct iphdr));
 710         th = tcp_hdr(skb);
 711
 712         th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
 713                                   iph->saddr, iph->daddr, 0);
 714 }
 715
 716 static void bnx2x_gro_ipv6_csum(struct bnx2x *bp, struct sk_buff *skb)
 717 {
 718         struct ipv6hdr *iph = ipv6_hdr(skb);
 719         struct tcphdr *th;
 720
 721         skb_set_transport_header(skb, sizeof(struct ipv6hdr));
 722         th = tcp_hdr(skb);
 723
 724         th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb),
 725                                   &iph->saddr, &iph->daddr, 0);
 726 }
 727
 728 static void bnx2x_gro_csum(struct bnx2x *bp, struct sk_buff *skb,
 729                             void (*gro_func)(struct bnx2x*, struct sk_buff*))
 730 {
 731         skb_set_network_header(skb, 0);
 732         gro_func(bp, skb);
 733         tcp_gro_complete(skb);
 734 }
 735 #endif
 736
 737 static void bnx2x_gro_receive(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 738                                struct sk_buff *skb)
 739 {
 740 #ifdef CONFIG_INET
 741         if (skb_shinfo(skb)->gso_size) {
 742                 switch (be16_to_cpu(skb->protocol)) {
 743                 case ETH_P_IP:
 744                         bnx2x_gro_csum(bp, skb, bnx2x_gro_ip_csum);
 745                         break;
 746                 case ETH_P_IPV6:
 747                         bnx2x_gro_csum(bp, skb, bnx2x_gro_ipv6_csum);
 748                         break;
 749                 default:
 750                         BNX2X_ERR("Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n",
 751                                   be16_to_cpu(skb->protocol));
 752                 }
 753         }
 754 #endif
 755         skb_record_rx_queue(skb, fp->rx_queue);
 756         napi_gro_receive(&fp->napi, skb);
 757 }
 758
 759 static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 760                            struct bnx2x_agg_info *tpa_info,
 761                            u16 pages,
 762                            struct eth_end_agg_rx_cqe *cqe,
 763                            u16 cqe_idx)
 764 {
 765         struct sw_rx_bd *rx_buf = &tpa_info->first_buf;
 766         u8 pad = tpa_info->placement_offset;
 767         u16 len = tpa_info->len_on_bd;
 768         struct sk_buff *skb = NULL;
 769         u8 *new_data, *data = rx_buf->data;
 770         u8 old_tpa_state = tpa_info->tpa_state;
 771
 772         tpa_info->tpa_state = BNX2X_TPA_STOP;
 773
 774         /* If we there was an error during the handling of the TPA_START -
 775          * drop this aggregation.
 776          */
 777         if (old_tpa_state == BNX2X_TPA_ERROR)
 778                 goto drop;
 779
 780         /* Try to allocate the new data */
 781         new_data = bnx2x_frag_alloc(fp, GFP_ATOMIC);
 782         /* Unmap skb in the pool anyway, as we are going to change
 783            pool entry status to BNX2X_TPA_STOP even if new skb allocation
 784            fails. */
 785         dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
 786                          fp->rx_buf_size, DMA_FROM_DEVICE);
 787         if (likely(new_data))
 788                 skb = build_skb(data, fp->rx_frag_size);
 789
 790         if (likely(skb)) {
 791 #ifdef BNX2X_STOP_ON_ERROR
 792                 if (pad + len > fp->rx_buf_size) {
 793                         BNX2X_ERR("skb_put is about to fail...  pad %d  len %d  rx_buf_size %d\n",
 794                                   pad, len, fp->rx_buf_size);
 795                         bnx2x_panic();
 796                         return;
 797                 }
 798 #endif
 799
 800                 skb_reserve(skb, pad + NET_SKB_PAD);
 801                 skb_put(skb, len);
 802                 skb_set_hash(skb, tpa_info->rxhash, tpa_info->rxhash_type);
 803
 804                 skb->protocol = eth_type_trans(skb, bp->dev);
 805                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 806
 807                 if (!bnx2x_fill_frag_skb(bp, fp, tpa_info, pages,
 808                                          skb, cqe, cqe_idx)) {
 809                         if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
 810                                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tpa_info->vlan_tag);
 811                         bnx2x_gro_receive(bp, fp, skb);
 812                 } else {
 813                         DP(NETIF_MSG_RX_STATUS,
 814                            "Failed to allocate new pages - dropping packet!\n");
 815                         dev_kfree_skb_any(skb);
 816                 }
 817
 818                 /* put new data in bin */
 819                 rx_buf->data = new_data;
 820
 821                 return;
 822         }
 823         if (new_data)
 824                 bnx2x_frag_free(fp, new_data);
 825 drop:
 826         /* drop the packet and keep the buffer in the bin */
 827         DP(NETIF_MSG_RX_STATUS,
 828            "Failed to allocate or map a new skb - dropping packet!\n");
 829         bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed++;
 830 }
 831
 832 static int bnx2x_alloc_rx_data(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 833                                u16 index, gfp_t gfp_mask)
 834 {
 835         u8 *data;
 836         struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[index];
 837         struct eth_rx_bd *rx_bd = &fp->rx_desc_ring[index];
 838         dma_addr_t mapping;
 839
 840         data = bnx2x_frag_alloc(fp, gfp_mask);
 841         if (unlikely(data == NULL))
 842                 return -ENOMEM;
 843
 844         mapping = dma_map_single(&bp->pdev->dev, data + NET_SKB_PAD,
 845                                  fp->rx_buf_size,
 846                                  DMA_FROM_DEVICE);
 847         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
 848                 bnx2x_frag_free(fp, data);
 849                 BNX2X_ERR("Can't map rx data\n");
 850                 return -ENOMEM;
 851         }
 852
 853         rx_buf->data = data;
 854         dma_unmap_addr_set(rx_buf, mapping, mapping);
 855
 856         rx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
 857         rx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
 858
 859         return 0;
 860 }
 861
 862 static
 863 void bnx2x_csum_validate(struct sk_buff *skb, union eth_rx_cqe *cqe,
 864                                  struct bnx2x_fastpath *fp,
 865                                  struct bnx2x_eth_q_stats *qstats)
 866 {
 867         /* Do nothing if no L4 csum validation was done.
 868          * We do not check whether IP csum was validated. For IPv4 we assume
 869          * that if the card got as far as validating the L4 csum, it also
 870          * validated the IP csum. IPv6 has no IP csum.
 871          */
 872         if (cqe->fast_path_cqe.status_flags &
 873             ETH_FAST_PATH_RX_CQE_L4_XSUM_NO_VALIDATION_FLG)
 874                 return;
 875
 876         /* If L4 validation was done, check if an error was found. */
 877
 878         if (cqe->fast_path_cqe.type_error_flags &
 879             (ETH_FAST_PATH_RX_CQE_IP_BAD_XSUM_FLG |
 880              ETH_FAST_PATH_RX_CQE_L4_BAD_XSUM_FLG))
 881                 qstats->hw_csum_err++;
 882         else
 883                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 884 }
 885
 886 static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
 887 {
 888         struct bnx2x *bp = fp->bp;
 889         u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
 890         u16 sw_comp_cons, sw_comp_prod;
 891         int rx_pkt = 0;
 892         union eth_rx_cqe *cqe;
 893         struct eth_fast_path_rx_cqe *cqe_fp;
 894
 895 #ifdef BNX2X_STOP_ON_ERROR
 896         if (unlikely(bp->panic))
 897                 return 0;
 898 #endif
 899         if (budget <= 0)
 900                 return rx_pkt;
 901
 902         bd_cons = fp->rx_bd_cons;
 903         bd_prod = fp->rx_bd_prod;
 904         bd_prod_fw = bd_prod;
 905         sw_comp_cons = fp->rx_comp_cons;
 906         sw_comp_prod = fp->rx_comp_prod;
 907
 908         comp_ring_cons = RCQ_BD(sw_comp_cons);
 909         cqe = &fp->rx_comp_ring[comp_ring_cons];
 910         cqe_fp = &cqe->fast_path_cqe;
 911
 912         DP(NETIF_MSG_RX_STATUS,
 913            "queue[%d]: sw_comp_cons %u\n", fp->index, sw_comp_cons);
 914
 915         while (BNX2X_IS_CQE_COMPLETED(cqe_fp)) {
 916                 struct sw_rx_bd *rx_buf = NULL;
 917                 struct sk_buff *skb;
 918                 u8 cqe_fp_flags;
 919                 enum eth_rx_cqe_type cqe_fp_type;
 920                 u16 len, pad, queue;
 921                 u8 *data;
 922                 u32 rxhash;
 923                 enum pkt_hash_types rxhash_type;
 924
 925 #ifdef BNX2X_STOP_ON_ERROR
 926                 if (unlikely(bp->panic))
 927                         return 0;
 928 #endif
 929
 930                 bd_prod = RX_BD(bd_prod);
 931                 bd_cons = RX_BD(bd_cons);
 932
 933                 /* A rmb() is required to ensure that the CQE is not read
 934                  * before it is written by the adapter DMA.  PCI ordering
 935                  * rules will make sure the other fields are written before
 936                  * the marker at the end of struct eth_fast_path_rx_cqe
 937                  * but without rmb() a weakly ordered processor can process
 938                  * stale data.  Without the barrier TPA state-machine might
 939                  * enter inconsistent state and kernel stack might be
 940                  * provided with incorrect packet description - these lead
 941                  * to various kernel crashed.
 942                  */
 943                 rmb();
 944
 945                 cqe_fp_flags = cqe_fp->type_error_flags;
 946                 cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
 947
 948                 DP(NETIF_MSG_RX_STATUS,
 949                    "CQE type %x  err %x  status %x  queue %x  vlan %x  len %u\n",
 950                    CQE_TYPE(cqe_fp_flags),
 951                    cqe_fp_flags, cqe_fp->status_flags,
 952                    le32_to_cpu(cqe_fp->rss_hash_result),
 953                    le16_to_cpu(cqe_fp->vlan_tag),
 954                    le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len));
 955
 956                 /* is this a slowpath msg? */
 957                 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
 958                         bnx2x_sp_event(fp, cqe);
 959                         goto next_cqe;
 960                 }
 961
 962                 rx_buf = &fp->rx_buf_ring[bd_cons];
 963                 data = rx_buf->data;
 964
 965                 if (!CQE_TYPE_FAST(cqe_fp_type)) {
 966                         struct bnx2x_agg_info *tpa_info;
 967                         u16 frag_size, pages;
 968 #ifdef BNX2X_STOP_ON_ERROR
 969                         /* sanity check */
 970                         if (fp->mode == TPA_MODE_DISABLED &&
 971                             (CQE_TYPE_START(cqe_fp_type) ||
 972                              CQE_TYPE_STOP(cqe_fp_type)))
 973                                 BNX2X_ERR("START/STOP packet while TPA disabled, type %x\n",
 974                                           CQE_TYPE(cqe_fp_type));
 975 #endif
 976
 977                         if (CQE_TYPE_START(cqe_fp_type)) {
 978                                 u16 queue = cqe_fp->queue_index;
 979                                 DP(NETIF_MSG_RX_STATUS,
 980                                    "calling tpa_start on queue %d\n",
 981                                    queue);
 982
 983                                 bnx2x_tpa_start(fp, queue,
 984                                                 bd_cons, bd_prod,
 985                                                 cqe_fp);
 986
 987                                 goto next_rx;
 988                         }
 989                         queue = cqe->end_agg_cqe.queue_index;
 990                         tpa_info = &fp->tpa_info[queue];
 991                         DP(NETIF_MSG_RX_STATUS,
 992                            "calling tpa_stop on queue %d\n",
 993                            queue);
 994
 995                         frag_size = le16_to_cpu(cqe->end_agg_cqe.pkt_len) -
 996                                     tpa_info->len_on_bd;
 997
 998                         if (fp->mode == TPA_MODE_GRO)
 999                                 pages = (frag_size + tpa_info->full_page - 1) /
1000                                          tpa_info->full_page;
1001                         else
1002                                 pages = SGE_PAGE_ALIGN(frag_size) >>
1003                                         SGE_PAGE_SHIFT;
1004
1005                         bnx2x_tpa_stop(bp, fp, tpa_info, pages,
1006                                        &cqe->end_agg_cqe, comp_ring_cons);
1007 #ifdef BNX2X_STOP_ON_ERROR
1008                         if (bp->panic)
1009                                 return 0;
1010 #endif
1011
1012                         bnx2x_update_sge_prod(fp, pages, &cqe->end_agg_cqe);
1013                         goto next_cqe;
1014                 }
1015                 /* non TPA */
1016                 len = le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len);
1017                 pad = cqe_fp->placement_offset;
1018                 dma_sync_single_for_cpu(&bp->pdev->dev,
1019                                         dma_unmap_addr(rx_buf, mapping),
1020                                         pad + RX_COPY_THRESH,
1021                                         DMA_FROM_DEVICE);
1022                 pad += NET_SKB_PAD;
1023                 prefetch(data + pad); /* speedup eth_type_trans() */
1024                 /* is this an error packet? */
1025                 if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
1026                         DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1027                            "ERROR  flags %x  rx packet %u\n",
1028                            cqe_fp_flags, sw_comp_cons);
1029                         bnx2x_fp_qstats(bp, fp)->rx_err_discard_pkt++;
1030                         goto reuse_rx;
1031                 }
1032
1033                 /* Since we don't have a jumbo ring
1034                  * copy small packets if mtu > 1500
1035                  */
1036                 if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
1037                     (len <= RX_COPY_THRESH)) {
1038                         skb = napi_alloc_skb(&fp->napi, len);
1039                         if (skb == NULL) {
1040                                 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1041                                    "ERROR  packet dropped because of alloc failure\n");
1042                                 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1043                                 goto reuse_rx;
1044                         }
1045                         memcpy(skb->data, data + pad, len);
1046                         bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1047                 } else {
1048                         if (likely(bnx2x_alloc_rx_data(bp, fp, bd_prod,
1049                                                        GFP_ATOMIC) == 0)) {
1050                                 dma_unmap_single(&bp->pdev->dev,
1051                                                  dma_unmap_addr(rx_buf, mapping),
1052                                                  fp->rx_buf_size,
1053                                                  DMA_FROM_DEVICE);
1054                                 skb = build_skb(data, fp->rx_frag_size);
1055                                 if (unlikely(!skb)) {
1056                                         bnx2x_frag_free(fp, data);
1057                                         bnx2x_fp_qstats(bp, fp)->
1058                                                         rx_skb_alloc_failed++;
1059                                         goto next_rx;
1060                                 }
1061                                 skb_reserve(skb, pad);
1062                         } else {
1063                                 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1064                                    "ERROR  packet dropped because of alloc failure\n");
1065                                 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1066 reuse_rx:
1067                                 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1068                                 goto next_rx;
1069                         }
1070                 }
1071
1072                 skb_put(skb, len);
1073                 skb->protocol = eth_type_trans(skb, bp->dev);
1074
1075                 /* Set Toeplitz hash for a none-LRO skb */
1076                 rxhash = bnx2x_get_rxhash(bp, cqe_fp, &rxhash_type);
1077                 skb_set_hash(skb, rxhash, rxhash_type);
1078
1079                 skb_checksum_none_assert(skb);
1080
1081                 if (bp->dev->features & NETIF_F_RXCSUM)
1082                         bnx2x_csum_validate(skb, cqe, fp,
1083                                             bnx2x_fp_qstats(bp, fp));
1084
1085                 skb_record_rx_queue(skb, fp->rx_queue);
1086
1087                 /* Check if this packet was timestamped */
1088                 if (unlikely(cqe->fast_path_cqe.type_error_flags &
1089                              (1 << ETH_FAST_PATH_RX_CQE_PTP_PKT_SHIFT)))
1090                         bnx2x_set_rx_ts(bp, skb);
1091
1092                 if (le16_to_cpu(cqe_fp->pars_flags.flags) &
1093                     PARSING_FLAGS_VLAN)
1094                         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
1095                                                le16_to_cpu(cqe_fp->vlan_tag));
1096
1097                 skb_mark_napi_id(skb, &fp->napi);
1098
1099                 if (bnx2x_fp_ll_polling(fp))
1100                         netif_receive_skb(skb);
1101                 else
1102                         napi_gro_receive(&fp->napi, skb);
1103 next_rx:
1104                 rx_buf->data = NULL;
1105
1106                 bd_cons = NEXT_RX_IDX(bd_cons);
1107                 bd_prod = NEXT_RX_IDX(bd_prod);
1108                 bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
1109                 rx_pkt++;
1110 next_cqe:
1111                 sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
1112                 sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
1113
1114                 /* mark CQE as free */
1115                 BNX2X_SEED_CQE(cqe_fp);
1116
1117                 if (rx_pkt == budget)
1118                         break;
1119
1120                 comp_ring_cons = RCQ_BD(sw_comp_cons);
1121                 cqe = &fp->rx_comp_ring[comp_ring_cons];
1122                 cqe_fp = &cqe->fast_path_cqe;
1123         } /* while */
1124
1125         fp->rx_bd_cons = bd_cons;
1126         fp->rx_bd_prod = bd_prod_fw;
1127         fp->rx_comp_cons = sw_comp_cons;
1128         fp->rx_comp_prod = sw_comp_prod;
1129
1130         /* Update producers */
1131         bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
1132                              fp->rx_sge_prod);
1133
1134         fp->rx_pkt += rx_pkt;
1135         fp->rx_calls++;
1136
1137         return rx_pkt;
1138 }
1139
1140 static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
1141 {
1142         struct bnx2x_fastpath *fp = fp_cookie;
1143         struct bnx2x *bp = fp->bp;
1144         u8 cos;
1145
1146         DP(NETIF_MSG_INTR,
1147            "got an MSI-X interrupt on IDX:SB [fp %d fw_sd %d igusb %d]\n",
1148            fp->index, fp->fw_sb_id, fp->igu_sb_id);
1149
1150         bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
1151
1152 #ifdef BNX2X_STOP_ON_ERROR
1153         if (unlikely(bp->panic))
1154                 return IRQ_HANDLED;
1155 #endif
1156
1157         /* Handle Rx and Tx according to MSI-X vector */
1158         for_each_cos_in_tx_queue(fp, cos)
1159                 prefetch(fp->txdata_ptr[cos]->tx_cons_sb);
1160
1161         prefetch(&fp->sb_running_index[SM_RX_ID]);
1162         napi_schedule_irqoff(&bnx2x_fp(bp, fp->index, napi));
1163
1164         return IRQ_HANDLED;
1165 }
1166
1167 /* HW Lock for shared dual port PHYs */
1168 void bnx2x_acquire_phy_lock(struct bnx2x *bp)
1169 {
1170         mutex_lock(&bp->port.phy_mutex);
1171
1172         bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1173 }
1174
1175 void bnx2x_release_phy_lock(struct bnx2x *bp)
1176 {
1177         bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1178
1179         mutex_unlock(&bp->port.phy_mutex);
1180 }
1181
1182 /* calculates MF speed according to current linespeed and MF configuration */
1183 u16 bnx2x_get_mf_speed(struct bnx2x *bp)
1184 {
1185         u16 line_speed = bp->link_vars.line_speed;
1186         if (IS_MF(bp)) {
1187                 u16 maxCfg = bnx2x_extract_max_cfg(bp,
1188                                                    bp->mf_config[BP_VN(bp)]);
1189
1190                 /* Calculate the current MAX line speed limit for the MF
1191                  * devices
1192                  */
1193                 if (IS_MF_PERCENT_BW(bp))
1194                         line_speed = (line_speed * maxCfg) / 100;
1195                 else { /* SD mode */
1196                         u16 vn_max_rate = maxCfg * 100;
1197
1198                         if (vn_max_rate < line_speed)
1199                                 line_speed = vn_max_rate;
1200                 }
1201         }
1202
1203         return line_speed;
1204 }
1205
1206 /**
1207  * bnx2x_fill_report_data - fill link report data to report
1208  *
1209  * @bp:         driver handle
1210  * @data:       link state to update
1211  *
1212  * It uses a none-atomic bit operations because is called under the mutex.
1213  */
1214 static void bnx2x_fill_report_data(struct bnx2x *bp,
1215                                    struct bnx2x_link_report_data *data)
1216 {
1217         memset(data, 0, sizeof(*data));
1218
1219         if (IS_PF(bp)) {
1220                 /* Fill the report data: effective line speed */
1221                 data->line_speed = bnx2x_get_mf_speed(bp);
1222
1223                 /* Link is down */
1224                 if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
1225                         __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1226                                   &data->link_report_flags);
1227
1228                 if (!BNX2X_NUM_ETH_QUEUES(bp))
1229                         __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1230                                   &data->link_report_flags);
1231
1232                 /* Full DUPLEX */
1233                 if (bp->link_vars.duplex == DUPLEX_FULL)
1234                         __set_bit(BNX2X_LINK_REPORT_FD,
1235                                   &data->link_report_flags);
1236
1237                 /* Rx Flow Control is ON */
1238                 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
1239                         __set_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1240                                   &data->link_report_flags);
1241
1242                 /* Tx Flow Control is ON */
1243                 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
1244                         __set_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1245                                   &data->link_report_flags);
1246         } else { /* VF */
1247                 *data = bp->vf_link_vars;
1248         }
1249 }
1250
1251 /**
1252  * bnx2x_link_report - report link status to OS.
1253  *
1254  * @bp:         driver handle
1255  *
1256  * Calls the __bnx2x_link_report() under the same locking scheme
1257  * as a link/PHY state managing code to ensure a consistent link
1258  * reporting.
1259  */
1260
1261 void bnx2x_link_report(struct bnx2x *bp)
1262 {
1263         bnx2x_acquire_phy_lock(bp);
1264         __bnx2x_link_report(bp);
1265         bnx2x_release_phy_lock(bp);
1266 }
1267
1268 /**
1269  * __bnx2x_link_report - report link status to OS.
1270  *
1271  * @bp:         driver handle
1272  *
1273  * None atomic implementation.
1274  * Should be called under the phy_lock.
1275  */
1276 void __bnx2x_link_report(struct bnx2x *bp)
1277 {
1278         struct bnx2x_link_report_data cur_data;
1279
1280         /* reread mf_cfg */
1281         if (IS_PF(bp) && !CHIP_IS_E1(bp))
1282                 bnx2x_read_mf_cfg(bp);
1283
1284         /* Read the current link report info */
1285         bnx2x_fill_report_data(bp, &cur_data);
1286
1287         /* Don't report link down or exactly the same link status twice */
1288         if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
1289             (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1290                       &bp->last_reported_link.link_report_flags) &&
1291              test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1292                       &cur_data.link_report_flags)))
1293                 return;
1294
1295         bp->link_cnt++;
1296
1297         /* We are going to report a new link parameters now -
1298          * remember the current data for the next time.
1299          */
1300         memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
1301
1302         /* propagate status to VFs */
1303         if (IS_PF(bp))
1304                 bnx2x_iov_link_update(bp);
1305
1306         if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1307                      &cur_data.link_report_flags)) {
1308                 netif_carrier_off(bp->dev);
1309                 netdev_err(bp->dev, "NIC Link is Down\n");
1310                 return;
1311         } else {
1312                 const char *duplex;
1313                 const char *flow;
1314
1315                 netif_carrier_on(bp->dev);
1316
1317                 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
1318                                        &cur_data.link_report_flags))
1319                         duplex = "full";
1320                 else
1321                         duplex = "half";
1322
1323                 /* Handle the FC at the end so that only these flags would be
1324                  * possibly set. This way we may easily check if there is no FC
1325                  * enabled.
1326                  */
1327                 if (cur_data.link_report_flags) {
1328                         if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1329                                      &cur_data.link_report_flags)) {
1330                                 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1331                                      &cur_data.link_report_flags))
1332                                         flow = "ON - receive & transmit";
1333                                 else
1334                                         flow = "ON - receive";
1335                         } else {
1336                                 flow = "ON - transmit";
1337                         }
1338                 } else {
1339                         flow = "none";
1340                 }
1341                 netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
1342                             cur_data.line_speed, duplex, flow);
1343         }
1344 }
1345
1346 static void bnx2x_set_next_page_sgl(struct bnx2x_fastpath *fp)
1347 {
1348         int i;
1349
1350         for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
1351                 struct eth_rx_sge *sge;
1352
1353                 sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2];
1354                 sge->addr_hi =
1355                         cpu_to_le32(U64_HI(fp->rx_sge_mapping +
1356                         BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1357
1358                 sge->addr_lo =
1359                         cpu_to_le32(U64_LO(fp->rx_sge_mapping +
1360                         BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1361         }
1362 }
1363
1364 static void bnx2x_free_tpa_pool(struct bnx2x *bp,
1365                                 struct bnx2x_fastpath *fp, int last)
1366 {
1367         int i;
1368
1369         for (i = 0; i < last; i++) {
1370                 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[i];
1371                 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
1372                 u8 *data = first_buf->data;
1373
1374                 if (data == NULL) {
1375                         DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i);
1376                         continue;
1377                 }
1378                 if (tpa_info->tpa_state == BNX2X_TPA_START)
1379                         dma_unmap_single(&bp->pdev->dev,
1380                                          dma_unmap_addr(first_buf, mapping),
1381                                          fp->rx_buf_size, DMA_FROM_DEVICE);
1382                 bnx2x_frag_free(fp, data);
1383                 first_buf->data = NULL;
1384         }
1385 }
1386
1387 void bnx2x_init_rx_rings_cnic(struct bnx2x *bp)
1388 {
1389         int j;
1390
1391         for_each_rx_queue_cnic(bp, j) {
1392                 struct bnx2x_fastpath *fp = &bp->fp[j];
1393
1394                 fp->rx_bd_cons = 0;
1395
1396                 /* Activate BD ring */
1397                 /* Warning!
1398                  * this will generate an interrupt (to the TSTORM)
1399                  * must only be done after chip is initialized
1400                  */
1401                 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1402                                      fp->rx_sge_prod);
1403         }
1404 }
1405
1406 void bnx2x_init_rx_rings(struct bnx2x *bp)
1407 {
1408         int func = BP_FUNC(bp);
1409         u16 ring_prod;
1410         int i, j;
1411
1412         /* Allocate TPA resources */
1413         for_each_eth_queue(bp, j) {
1414                 struct bnx2x_fastpath *fp = &bp->fp[j];
1415
1416                 DP(NETIF_MSG_IFUP,
1417                    "mtu %d  rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
1418
1419                 if (fp->mode != TPA_MODE_DISABLED) {
1420                         /* Fill the per-aggregation pool */
1421                         for (i = 0; i < MAX_AGG_QS(bp); i++) {
1422                                 struct bnx2x_agg_info *tpa_info =
1423                                         &fp->tpa_info[i];
1424                                 struct sw_rx_bd *first_buf =
1425                                         &tpa_info->first_buf;
1426
1427                                 first_buf->data =
1428                                         bnx2x_frag_alloc(fp, GFP_KERNEL);
1429                                 if (!first_buf->data) {
1430                                         BNX2X_ERR("Failed to allocate TPA skb pool for queue[%d] - disabling TPA on this queue!\n",
1431                                                   j);
1432                                         bnx2x_free_tpa_pool(bp, fp, i);
1433                                         fp->mode = TPA_MODE_DISABLED;
1434                                         break;
1435                                 }
1436                                 dma_unmap_addr_set(first_buf, mapping, 0);
1437                                 tpa_info->tpa_state = BNX2X_TPA_STOP;
1438                         }
1439
1440                         /* "next page" elements initialization */
1441                         bnx2x_set_next_page_sgl(fp);
1442
1443                         /* set SGEs bit mask */
1444                         bnx2x_init_sge_ring_bit_mask(fp);
1445
1446                         /* Allocate SGEs and initialize the ring elements */
1447                         for (i = 0, ring_prod = 0;
1448                              i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
1449
1450                                 if (bnx2x_alloc_rx_sge(bp, fp, ring_prod,
1451                                                        GFP_KERNEL) < 0) {
1452                                         BNX2X_ERR("was only able to allocate %d rx sges\n",
1453                                                   i);
1454                                         BNX2X_ERR("disabling TPA for queue[%d]\n",
1455                                                   j);
1456                                         /* Cleanup already allocated elements */
1457                                         bnx2x_free_rx_sge_range(bp, fp,
1458                                                                 ring_prod);
1459                                         bnx2x_free_tpa_pool(bp, fp,
1460                                                             MAX_AGG_QS(bp));
1461                                         fp->mode = TPA_MODE_DISABLED;
1462                                         ring_prod = 0;
1463                                         break;
1464                                 }
1465                                 ring_prod = NEXT_SGE_IDX(ring_prod);
1466                         }
1467
1468                         fp->rx_sge_prod = ring_prod;
1469                 }
1470         }
1471
1472         for_each_eth_queue(bp, j) {
1473                 struct bnx2x_fastpath *fp = &bp->fp[j];
1474
1475                 fp->rx_bd_cons = 0;
1476
1477                 /* Activate BD ring */
1478                 /* Warning!
1479                  * this will generate an interrupt (to the TSTORM)
1480                  * must only be done after chip is initialized
1481                  */
1482                 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1483                                      fp->rx_sge_prod);
1484
1485                 if (j != 0)
1486                         continue;
1487
1488                 if (CHIP_IS_E1(bp)) {
1489                         REG_WR(bp, BAR_USTRORM_INTMEM +
1490                                USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
1491                                U64_LO(fp->rx_comp_mapping));
1492                         REG_WR(bp, BAR_USTRORM_INTMEM +
1493                                USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
1494                                U64_HI(fp->rx_comp_mapping));
1495                 }
1496         }
1497 }
1498
1499 static void bnx2x_free_tx_skbs_queue(struct bnx2x_fastpath *fp)
1500 {
1501         u8 cos;
1502         struct bnx2x *bp = fp->bp;
1503
1504         for_each_cos_in_tx_queue(fp, cos) {
1505                 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
1506                 unsigned pkts_compl = 0, bytes_compl = 0;
1507
1508                 u16 sw_prod = txdata->tx_pkt_prod;
1509                 u16 sw_cons = txdata->tx_pkt_cons;
1510
1511                 while (sw_cons != sw_prod) {
1512                         bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
1513                                           &pkts_compl, &bytes_compl);
1514                         sw_cons++;
1515                 }
1516
1517                 netdev_tx_reset_queue(
1518                         netdev_get_tx_queue(bp->dev,
1519                                             txdata->txq_index));
1520         }
1521 }
1522
1523 static void bnx2x_free_tx_skbs_cnic(struct bnx2x *bp)
1524 {
1525         int i;
1526
1527         for_each_tx_queue_cnic(bp, i) {
1528                 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1529         }
1530 }
1531
1532 static void bnx2x_free_tx_skbs(struct bnx2x *bp)
1533 {
1534         int i;
1535
1536         for_each_eth_queue(bp, i) {
1537                 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1538         }
1539 }
1540
1541 static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
1542 {
1543         struct bnx2x *bp = fp->bp;
1544         int i;
1545
1546         /* ring wasn't allocated */
1547         if (fp->rx_buf_ring == NULL)
1548                 return;
1549
1550         for (i = 0; i < NUM_RX_BD; i++) {
1551                 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
1552                 u8 *data = rx_buf->data;
1553
1554                 if (data == NULL)
1555                         continue;
1556                 dma_unmap_single(&bp->pdev->dev,
1557                                  dma_unmap_addr(rx_buf, mapping),
1558                                  fp->rx_buf_size, DMA_FROM_DEVICE);
1559
1560                 rx_buf->data = NULL;
1561                 bnx2x_frag_free(fp, data);
1562         }
1563 }
1564
1565 static void bnx2x_free_rx_skbs_cnic(struct bnx2x *bp)
1566 {
1567         int j;
1568
1569         for_each_rx_queue_cnic(bp, j) {
1570                 bnx2x_free_rx_bds(&bp->fp[j]);
1571         }
1572 }
1573
1574 static void bnx2x_free_rx_skbs(struct bnx2x *bp)
1575 {
1576         int j;
1577
1578         for_each_eth_queue(bp, j) {
1579                 struct bnx2x_fastpath *fp = &bp->fp[j];
1580
1581                 bnx2x_free_rx_bds(fp);
1582
1583                 if (fp->mode != TPA_MODE_DISABLED)
1584                         bnx2x_free_tpa_pool(bp, fp, MAX_AGG_QS(bp));
1585         }
1586 }
1587
1588 static void bnx2x_free_skbs_cnic(struct bnx2x *bp)
1589 {
1590         bnx2x_free_tx_skbs_cnic(bp);
1591         bnx2x_free_rx_skbs_cnic(bp);
1592 }
1593
1594 void bnx2x_free_skbs(struct bnx2x *bp)
1595 {
1596         bnx2x_free_tx_skbs(bp);
1597         bnx2x_free_rx_skbs(bp);
1598 }
1599
1600 void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
1601 {
1602         /* load old values */
1603         u32 mf_cfg = bp->mf_config[BP_VN(bp)];
1604
1605         if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
1606                 /* leave all but MAX value */
1607                 mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
1608
1609                 /* set new MAX value */
1610                 mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
1611                                 & FUNC_MF_CFG_MAX_BW_MASK;
1612
1613                 bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
1614         }
1615 }
1616
1617 /**
1618  * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1619  *
1620  * @bp:         driver handle
1621  * @nvecs:      number of vectors to be released
1622  */
1623 static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
1624 {
1625         int i, offset = 0;
1626
1627         if (nvecs == offset)
1628                 return;
1629
1630         /* VFs don't have a default SB */
1631         if (IS_PF(bp)) {
1632                 free_irq(bp->msix_table[offset].vector, bp->dev);
1633                 DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
1634                    bp->msix_table[offset].vector);
1635                 offset++;
1636         }
1637
1638         if (CNIC_SUPPORT(bp)) {
1639                 if (nvecs == offset)
1640                         return;
1641                 offset++;
1642         }
1643
1644         for_each_eth_queue(bp, i) {
1645                 if (nvecs == offset)
1646                         return;
1647                 DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq\n",
1648                    i, bp->msix_table[offset].vector);
1649
1650                 free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
1651         }
1652 }
1653
1654 void bnx2x_free_irq(struct bnx2x *bp)
1655 {
1656         if (bp->flags & USING_MSIX_FLAG &&
1657             !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1658                 int nvecs = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_SUPPORT(bp);
1659
1660                 /* vfs don't have a default status block */
1661                 if (IS_PF(bp))
1662                         nvecs++;
1663
1664                 bnx2x_free_msix_irqs(bp, nvecs);
1665         } else {
1666                 free_irq(bp->dev->irq, bp->dev);
1667         }
1668 }
1669
1670 int bnx2x_enable_msix(struct bnx2x *bp)
1671 {
1672         int msix_vec = 0, i, rc;
1673
1674         /* VFs don't have a default status block */
1675         if (IS_PF(bp)) {
1676                 bp->msix_table[msix_vec].entry = msix_vec;
1677                 BNX2X_DEV_INFO("msix_table[0].entry = %d (slowpath)\n",
1678                                bp->msix_table[0].entry);
1679                 msix_vec++;
1680         }
1681
1682         /* Cnic requires an msix vector for itself */
1683         if (CNIC_SUPPORT(bp)) {
1684                 bp->msix_table[msix_vec].entry = msix_vec;
1685                 BNX2X_DEV_INFO("msix_table[%d].entry = %d (CNIC)\n",
1686                                msix_vec, bp->msix_table[msix_vec].entry);
1687                 msix_vec++;
1688         }
1689
1690         /* We need separate vectors for ETH queues only (not FCoE) */
1691         for_each_eth_queue(bp, i) {
1692                 bp->msix_table[msix_vec].entry = msix_vec;
1693                 BNX2X_DEV_INFO("msix_table[%d].entry = %d (fastpath #%u)\n",
1694                                msix_vec, msix_vec, i);
1695                 msix_vec++;
1696         }
1697
1698         DP(BNX2X_MSG_SP, "about to request enable msix with %d vectors\n",
1699            msix_vec);
1700
1701         rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0],
1702                                    BNX2X_MIN_MSIX_VEC_CNT(bp), msix_vec);
1703         /*
1704          * reconfigure number of tx/rx queues according to available
1705          * MSI-X vectors
1706          */
1707         if (rc == -ENOSPC) {
1708                 /* Get by with single vector */
1709                 rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0], 1, 1);
1710                 if (rc < 0) {
1711                         BNX2X_DEV_INFO("Single MSI-X is not attainable rc %d\n",
1712                                        rc);
1713                         goto no_msix;
1714                 }
1715
1716                 BNX2X_DEV_INFO("Using single MSI-X vector\n");
1717                 bp->flags |= USING_SINGLE_MSIX_FLAG;
1718
1719                 BNX2X_DEV_INFO("set number of queues to 1\n");
1720                 bp->num_ethernet_queues = 1;
1721                 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1722         } else if (rc < 0) {
1723                 BNX2X_DEV_INFO("MSI-X is not attainable rc %d\n", rc);
1724                 goto no_msix;
1725         } else if (rc < msix_vec) {
1726                 /* how less vectors we will have? */
1727                 int diff = msix_vec - rc;
1728
1729                 BNX2X_DEV_INFO("Trying to use less MSI-X vectors: %d\n", rc);
1730
1731                 /*
1732                  * decrease number of queues by number of unallocated entries
1733                  */
1734                 bp->num_ethernet_queues -= diff;
1735                 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1736
1737                 BNX2X_DEV_INFO("New queue configuration set: %d\n",
1738                                bp->num_queues);
1739         }
1740
1741         bp->flags |= USING_MSIX_FLAG;
1742
1743         return 0;
1744
1745 no_msix:
1746         /* fall to INTx if not enough memory */
1747         if (rc == -ENOMEM)
1748                 bp->flags |= DISABLE_MSI_FLAG;
1749
1750         return rc;
1751 }
1752
1753 static int bnx2x_req_msix_irqs(struct bnx2x *bp)
1754 {
1755         int i, rc, offset = 0;
1756
1757         /* no default status block for vf */
1758         if (IS_PF(bp)) {
1759                 rc = request_irq(bp->msix_table[offset++].vector,
1760                                  bnx2x_msix_sp_int, 0,
1761                                  bp->dev->name, bp->dev);
1762                 if (rc) {
1763                         BNX2X_ERR("request sp irq failed\n");
1764                         return -EBUSY;
1765                 }
1766         }
1767
1768         if (CNIC_SUPPORT(bp))
1769                 offset++;
1770
1771         for_each_eth_queue(bp, i) {
1772                 struct bnx2x_fastpath *fp = &bp->fp[i];
1773                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1774                          bp->dev->name, i);
1775
1776                 rc = request_irq(bp->msix_table[offset].vector,
1777                                  bnx2x_msix_fp_int, 0, fp->name, fp);
1778                 if (rc) {
1779                         BNX2X_ERR("request fp #%d irq (%d) failed  rc %d\n", i,
1780                               bp->msix_table[offset].vector, rc);
1781                         bnx2x_free_msix_irqs(bp, offset);
1782                         return -EBUSY;
1783                 }
1784
1785                 offset++;
1786         }
1787
1788         i = BNX2X_NUM_ETH_QUEUES(bp);
1789         if (IS_PF(bp)) {
1790                 offset = 1 + CNIC_SUPPORT(bp);
1791                 netdev_info(bp->dev,
1792                             "using MSI-X  IRQs: sp %d  fp[%d] %d ... fp[%d] %d\n",
1793                             bp->msix_table[0].vector,
1794                             0, bp->msix_table[offset].vector,
1795                             i - 1, bp->msix_table[offset + i - 1].vector);
1796         } else {
1797                 offset = CNIC_SUPPORT(bp);
1798                 netdev_info(bp->dev,
1799                             "using MSI-X  IRQs: fp[%d] %d ... fp[%d] %d\n",
1800                             0, bp->msix_table[offset].vector,
1801                             i - 1, bp->msix_table[offset + i - 1].vector);
1802         }
1803         return 0;
1804 }
1805
1806 int bnx2x_enable_msi(struct bnx2x *bp)
1807 {
1808         int rc;
1809
1810         rc = pci_enable_msi(bp->pdev);
1811         if (rc) {
1812                 BNX2X_DEV_INFO("MSI is not attainable\n");
1813                 return -1;
1814         }
1815         bp->flags |= USING_MSI_FLAG;
1816
1817         return 0;
1818 }
1819
1820 static int bnx2x_req_irq(struct bnx2x *bp)
1821 {
1822         unsigned long flags;
1823         unsigned int irq;
1824
1825         if (bp->flags & (USING_MSI_FLAG | USING_MSIX_FLAG))
1826                 flags = 0;
1827         else
1828                 flags = IRQF_SHARED;
1829
1830         if (bp->flags & USING_MSIX_FLAG)
1831                 irq = bp->msix_table[0].vector;
1832         else
1833                 irq = bp->pdev->irq;
1834
1835         return request_irq(irq, bnx2x_interrupt, flags, bp->dev->name, bp->dev);
1836 }
1837
1838 static int bnx2x_setup_irqs(struct bnx2x *bp)
1839 {
1840         int rc = 0;
1841         if (bp->flags & USING_MSIX_FLAG &&
1842             !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1843                 rc = bnx2x_req_msix_irqs(bp);
1844                 if (rc)
1845                         return rc;
1846         } else {
1847                 rc = bnx2x_req_irq(bp);
1848                 if (rc) {
1849                         BNX2X_ERR("IRQ request failed  rc %d, aborting\n", rc);
1850                         return rc;
1851                 }
1852                 if (bp->flags & USING_MSI_FLAG) {
1853                         bp->dev->irq = bp->pdev->irq;
1854                         netdev_info(bp->dev, "using MSI IRQ %d\n",
1855                                     bp->dev->irq);
1856                 }
1857                 if (bp->flags & USING_MSIX_FLAG) {
1858                         bp->dev->irq = bp->msix_table[0].vector;
1859                         netdev_info(bp->dev, "using MSIX IRQ %d\n",
1860                                     bp->dev->irq);
1861                 }
1862         }
1863
1864         return 0;
1865 }
1866
1867 static void bnx2x_napi_enable_cnic(struct bnx2x *bp)
1868 {
1869         int i;
1870
1871         for_each_rx_queue_cnic(bp, i) {
1872                 bnx2x_fp_busy_poll_init(&bp->fp[i]);
1873                 napi_enable(&bnx2x_fp(bp, i, napi));
1874         }
1875 }
1876
1877 static void bnx2x_napi_enable(struct bnx2x *bp)
1878 {
1879         int i;
1880
1881         for_each_eth_queue(bp, i) {
1882                 bnx2x_fp_busy_poll_init(&bp->fp[i]);
1883                 napi_enable(&bnx2x_fp(bp, i, napi));
1884         }
1885 }
1886
1887 static void bnx2x_napi_disable_cnic(struct bnx2x *bp)
1888 {
1889         int i;
1890
1891         for_each_rx_queue_cnic(bp, i) {
1892                 napi_disable(&bnx2x_fp(bp, i, napi));
1893                 while (!bnx2x_fp_ll_disable(&bp->fp[i]))
1894                         usleep_range(1000, 2000);
1895         }
1896 }
1897
1898 static void bnx2x_napi_disable(struct bnx2x *bp)
1899 {
1900         int i;
1901
1902         for_each_eth_queue(bp, i) {
1903                 napi_disable(&bnx2x_fp(bp, i, napi));
1904                 while (!bnx2x_fp_ll_disable(&bp->fp[i]))
1905                         usleep_range(1000, 2000);
1906         }
1907 }
1908
1909 void bnx2x_netif_start(struct bnx2x *bp)
1910 {
1911         if (netif_running(bp->dev)) {
1912                 bnx2x_napi_enable(bp);
1913                 if (CNIC_LOADED(bp))
1914                         bnx2x_napi_enable_cnic(bp);
1915                 bnx2x_int_enable(bp);
1916                 if (bp->state == BNX2X_STATE_OPEN)
1917                         netif_tx_wake_all_queues(bp->dev);
1918         }
1919 }
1920
1921 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
1922 {
1923         bnx2x_int_disable_sync(bp, disable_hw);
1924         bnx2x_napi_disable(bp);
1925         if (CNIC_LOADED(bp))
1926                 bnx2x_napi_disable_cnic(bp);
1927 }
1928
1929 u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb,
1930                        void *accel_priv, select_queue_fallback_t fallback)
1931 {
1932         struct bnx2x *bp = netdev_priv(dev);
1933
1934         if (CNIC_LOADED(bp) && !NO_FCOE(bp)) {
1935                 struct ethhdr *hdr = (struct ethhdr *)skb->data;
1936                 u16 ether_type = ntohs(hdr->h_proto);
1937
1938                 /* Skip VLAN tag if present */
1939                 if (ether_type == ETH_P_8021Q) {
1940                         struct vlan_ethhdr *vhdr =
1941                                 (struct vlan_ethhdr *)skb->data;
1942
1943                         ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
1944                 }
1945
1946                 /* If ethertype is FCoE or FIP - use FCoE ring */
1947                 if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
1948                         return bnx2x_fcoe_tx(bp, txq_index);
1949         }
1950
1951         /* select a non-FCoE queue */
1952         return fallback(dev, skb) % BNX2X_NUM_ETH_QUEUES(bp);
1953 }
1954
1955 void bnx2x_set_num_queues(struct bnx2x *bp)
1956 {
1957         /* RSS queues */
1958         bp->num_ethernet_queues = bnx2x_calc_num_queues(bp);
1959
1960         /* override in STORAGE SD modes */
1961         if (IS_MF_STORAGE_ONLY(bp))
1962                 bp->num_ethernet_queues = 1;
1963
1964         /* Add special queues */
1965         bp->num_cnic_queues = CNIC_SUPPORT(bp); /* For FCOE */
1966         bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1967
1968         BNX2X_DEV_INFO("set number of queues to %d\n", bp->num_queues);
1969 }
1970
1971 /**
1972  * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
1973  *
1974  * @bp:         Driver handle
1975  *
1976  * We currently support for at most 16 Tx queues for each CoS thus we will
1977  * allocate a multiple of 16 for ETH L2 rings according to the value of the
1978  * bp->max_cos.
1979  *
1980  * If there is an FCoE L2 queue the appropriate Tx queue will have the next
1981  * index after all ETH L2 indices.
1982  *
1983  * If the actual number of Tx queues (for each CoS) is less than 16 then there
1984  * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
1985  * 16..31,...) with indices that are not coupled with any real Tx queue.
1986  *
1987  * The proper configuration of skb->queue_mapping is handled by
1988  * bnx2x_select_queue() and __skb_tx_hash().
1989  *
1990  * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
1991  * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
1992  */
1993 static int bnx2x_set_real_num_queues(struct bnx2x *bp, int include_cnic)
1994 {
1995         int rc, tx, rx;
1996
1997         tx = BNX2X_NUM_ETH_QUEUES(bp) * bp->max_cos;
1998         rx = BNX2X_NUM_ETH_QUEUES(bp);
1999
2000 /* account for fcoe queue */
2001         if (include_cnic && !NO_FCOE(bp)) {
2002                 rx++;
2003                 tx++;
2004         }
2005
2006         rc = netif_set_real_num_tx_queues(bp->dev, tx);
2007         if (rc) {
2008                 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
2009                 return rc;
2010         }
2011         rc = netif_set_real_num_rx_queues(bp->dev, rx);
2012         if (rc) {
2013                 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
2014                 return rc;
2015         }
2016
2017         DP(NETIF_MSG_IFUP, "Setting real num queues to (tx, rx) (%d, %d)\n",
2018                           tx, rx);
2019
2020         return rc;
2021 }
2022
2023 static void bnx2x_set_rx_buf_size(struct bnx2x *bp)
2024 {
2025         int i;
2026
2027         for_each_queue(bp, i) {
2028                 struct bnx2x_fastpath *fp = &bp->fp[i];
2029                 u32 mtu;
2030
2031                 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
2032                 if (IS_FCOE_IDX(i))
2033                         /*
2034                          * Although there are no IP frames expected to arrive to
2035                          * this ring we still want to add an
2036                          * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
2037                          * overrun attack.
2038                          */
2039                         mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
2040                 else
2041                         mtu = bp->dev->mtu;
2042                 fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START +
2043                                   IP_HEADER_ALIGNMENT_PADDING +
2044                                   ETH_OVREHEAD +
2045                                   mtu +
2046                                   BNX2X_FW_RX_ALIGN_END;
2047                 /* Note : rx_buf_size doesn't take into account NET_SKB_PAD */
2048                 if (fp->rx_buf_size + NET_SKB_PAD <= PAGE_SIZE)
2049                         fp->rx_frag_size = fp->rx_buf_size + NET_SKB_PAD;
2050                 else
2051                         fp->rx_frag_size = 0;
2052         }
2053 }
2054
2055 static int bnx2x_init_rss(struct bnx2x *bp)
2056 {
2057         int i;
2058         u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
2059
2060         /* Prepare the initial contents for the indirection table if RSS is
2061          * enabled
2062          */
2063         for (i = 0; i < sizeof(bp->rss_conf_obj.ind_table); i++)
2064                 bp->rss_conf_obj.ind_table[i] =
2065                         bp->fp->cl_id +
2066                         ethtool_rxfh_indir_default(i, num_eth_queues);
2067
2068         /*
2069          * For 57710 and 57711 SEARCHER configuration (rss_keys) is
2070          * per-port, so if explicit configuration is needed , do it only
2071          * for a PMF.
2072          *
2073          * For 57712 and newer on the other hand it's a per-function
2074          * configuration.
2075          */
2076         return bnx2x_config_rss_eth(bp, bp->port.pmf || !CHIP_IS_E1x(bp));
2077 }
2078
2079 int bnx2x_rss(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
2080               bool config_hash, bool enable)
2081 {
2082         struct bnx2x_config_rss_params params = {NULL};
2083
2084         /* Although RSS is meaningless when there is a single HW queue we
2085          * still need it enabled in order to have HW Rx hash generated.
2086          *
2087          * if (!is_eth_multi(bp))
2088          *      bp->multi_mode = ETH_RSS_MODE_DISABLED;
2089          */
2090
2091         params.rss_obj = rss_obj;
2092
2093         __set_bit(RAMROD_COMP_WAIT, &params.ramrod_flags);
2094
2095         if (enable) {
2096                 __set_bit(BNX2X_RSS_MODE_REGULAR, &params.rss_flags);
2097
2098                 /* RSS configuration */
2099                 __set_bit(BNX2X_RSS_IPV4, &params.rss_flags);
2100                 __set_bit(BNX2X_RSS_IPV4_TCP, &params.rss_flags);
2101                 __set_bit(BNX2X_RSS_IPV6, &params.rss_flags);
2102                 __set_bit(BNX2X_RSS_IPV6_TCP, &params.rss_flags);
2103                 if (rss_obj->udp_rss_v4)
2104                         __set_bit(BNX2X_RSS_IPV4_UDP, &params.rss_flags);
2105                 if (rss_obj->udp_rss_v6)
2106                         __set_bit(BNX2X_RSS_IPV6_UDP, &params.rss_flags);
2107
2108                 if (!CHIP_IS_E1x(bp)) {
2109                         /* valid only for TUNN_MODE_VXLAN tunnel mode */
2110                         __set_bit(BNX2X_RSS_IPV4_VXLAN, &params.rss_flags);
2111                         __set_bit(BNX2X_RSS_IPV6_VXLAN, &params.rss_flags);
2112
2113                         /* valid only for TUNN_MODE_GRE tunnel mode */
2114                         __set_bit(BNX2X_RSS_TUNN_INNER_HDRS, &params.rss_flags);
2115                 }
2116         } else {
2117                 __set_bit(BNX2X_RSS_MODE_DISABLED, &params.rss_flags);
2118         }
2119
2120         /* Hash bits */
2121         params.rss_result_mask = MULTI_MASK;
2122
2123         memcpy(params.ind_table, rss_obj->ind_table, sizeof(params.ind_table));
2124
2125         if (config_hash) {
2126                 /* RSS keys */
2127                 netdev_rss_key_fill(params.rss_key, T_ETH_RSS_KEY * 4);
2128                 __set_bit(BNX2X_RSS_SET_SRCH, &params.rss_flags);
2129         }
2130
2131         if (IS_PF(bp))
2132                 return bnx2x_config_rss(bp, &params);
2133         else
2134                 return bnx2x_vfpf_config_rss(bp, &params);
2135 }
2136
2137 static int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
2138 {
2139         struct bnx2x_func_state_params func_params = {NULL};
2140
2141         /* Prepare parameters for function state transitions */
2142         __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
2143
2144         func_params.f_obj = &bp->func_obj;
2145         func_params.cmd = BNX2X_F_CMD_HW_INIT;
2146
2147         func_params.params.hw_init.load_phase = load_code;
2148
2149         return bnx2x_func_state_change(bp, &func_params);
2150 }
2151
2152 /*
2153  * Cleans the object that have internal lists without sending
2154  * ramrods. Should be run when interrupts are disabled.
2155  */
2156 void bnx2x_squeeze_objects(struct bnx2x *bp)
2157 {
2158         int rc;
2159         unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
2160         struct bnx2x_mcast_ramrod_params rparam = {NULL};
2161         struct bnx2x_vlan_mac_obj *mac_obj = &bp->sp_objs->mac_obj;
2162
2163         /***************** Cleanup MACs' object first *************************/
2164
2165         /* Wait for completion of requested */
2166         __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
2167         /* Perform a dry cleanup */
2168         __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
2169
2170         /* Clean ETH primary MAC */
2171         __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
2172         rc = mac_obj->delete_all(bp, &bp->sp_objs->mac_obj, &vlan_mac_flags,
2173                                  &ramrod_flags);
2174         if (rc != 0)
2175                 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
2176
2177         /* Cleanup UC list */
2178         vlan_mac_flags = 0;
2179         __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
2180         rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
2181                                  &ramrod_flags);
2182         if (rc != 0)
2183                 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
2184
2185         /***************** Now clean mcast object *****************************/
2186         rparam.mcast_obj = &bp->mcast_obj;
2187         __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
2188
2189         /* Add a DEL command... - Since we're doing a driver cleanup only,
2190          * we take a lock surrounding both the initial send and the CONTs,
2191          * as we don't want a true completion to disrupt us in the middle.
2192          */
2193         netif_addr_lock_bh(bp->dev);
2194         rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
2195         if (rc < 0)
2196                 BNX2X_ERR("Failed to add a new DEL command to a multi-cast object: %d\n",
2197                           rc);
2198
2199         /* ...and wait until all pending commands are cleared */
2200         rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2201         while (rc != 0) {
2202                 if (rc < 0) {
2203                         BNX2X_ERR("Failed to clean multi-cast object: %d\n",
2204                                   rc);
2205                         netif_addr_unlock_bh(bp->dev);
2206                         return;
2207                 }
2208
2209                 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2210         }
2211         netif_addr_unlock_bh(bp->dev);
2212 }
2213
2214 #ifndef BNX2X_STOP_ON_ERROR
2215 #define LOAD_ERROR_EXIT(bp, label) \
2216         do { \
2217                 (bp)->state = BNX2X_STATE_ERROR; \
2218                 goto label; \
2219         } while (0)
2220
2221 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2222         do { \
2223                 bp->cnic_loaded = false; \
2224                 goto label; \
2225         } while (0)
2226 #else /*BNX2X_STOP_ON_ERROR*/
2227 #define LOAD_ERROR_EXIT(bp, label) \
2228         do { \
2229                 (bp)->state = BNX2X_STATE_ERROR; \
2230                 (bp)->panic = 1; \
2231                 return -EBUSY; \
2232         } while (0)
2233 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2234         do { \
2235                 bp->cnic_loaded = false; \
2236                 (bp)->panic = 1; \
2237                 return -EBUSY; \
2238         } while (0)
2239 #endif /*BNX2X_STOP_ON_ERROR*/
2240
2241 static void bnx2x_free_fw_stats_mem(struct bnx2x *bp)
2242 {
2243         BNX2X_PCI_FREE(bp->fw_stats, bp->fw_stats_mapping,
2244                        bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2245         return;
2246 }
2247
2248 static int bnx2x_alloc_fw_stats_mem(struct bnx2x *bp)
2249 {
2250         int num_groups, vf_headroom = 0;
2251         int is_fcoe_stats = NO_FCOE(bp) ? 0 : 1;
2252
2253         /* number of queues for statistics is number of eth queues + FCoE */
2254         u8 num_queue_stats = BNX2X_NUM_ETH_QUEUES(bp) + is_fcoe_stats;
2255
2256         /* Total number of FW statistics requests =
2257          * 1 for port stats + 1 for PF stats + potential 2 for FCoE (fcoe proper
2258          * and fcoe l2 queue) stats + num of queues (which includes another 1
2259          * for fcoe l2 queue if applicable)
2260          */
2261         bp->fw_stats_num = 2 + is_fcoe_stats + num_queue_stats;
2262
2263         /* vf stats appear in the request list, but their data is allocated by
2264          * the VFs themselves. We don't include them in the bp->fw_stats_num as
2265          * it is used to determine where to place the vf stats queries in the
2266          * request struct
2267          */
2268         if (IS_SRIOV(bp))
2269                 vf_headroom = bnx2x_vf_headroom(bp);
2270
2271         /* Request is built from stats_query_header and an array of
2272          * stats_query_cmd_group each of which contains
2273          * STATS_QUERY_CMD_COUNT rules. The real number or requests is
2274          * configured in the stats_query_header.
2275          */
2276         num_groups =
2277                 (((bp->fw_stats_num + vf_headroom) / STATS_QUERY_CMD_COUNT) +
2278                  (((bp->fw_stats_num + vf_headroom) % STATS_QUERY_CMD_COUNT) ?
2279                  1 : 0));
2280
2281         DP(BNX2X_MSG_SP, "stats fw_stats_num %d, vf headroom %d, num_groups %d\n",
2282            bp->fw_stats_num, vf_headroom, num_groups);
2283         bp->fw_stats_req_sz = sizeof(struct stats_query_header) +
2284                 num_groups * sizeof(struct stats_query_cmd_group);
2285
2286         /* Data for statistics requests + stats_counter
2287          * stats_counter holds per-STORM counters that are incremented
2288          * when STORM has finished with the current request.
2289          * memory for FCoE offloaded statistics are counted anyway,
2290          * even if they will not be sent.
2291          * VF stats are not accounted for here as the data of VF stats is stored
2292          * in memory allocated by the VF, not here.
2293          */
2294         bp->fw_stats_data_sz = sizeof(struct per_port_stats) +
2295                 sizeof(struct per_pf_stats) +
2296                 sizeof(struct fcoe_statistics_params) +
2297                 sizeof(struct per_queue_stats) * num_queue_stats +
2298                 sizeof(struct stats_counter);
2299
2300         bp->fw_stats = BNX2X_PCI_ALLOC(&bp->fw_stats_mapping,
2301                                        bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2302         if (!bp->fw_stats)
2303                 goto alloc_mem_err;
2304
2305         /* Set shortcuts */
2306         bp->fw_stats_req = (struct bnx2x_fw_stats_req *)bp->fw_stats;
2307         bp->fw_stats_req_mapping = bp->fw_stats_mapping;
2308         bp->fw_stats_data = (struct bnx2x_fw_stats_data *)
2309                 ((u8 *)bp->fw_stats + bp->fw_stats_req_sz);
2310         bp->fw_stats_data_mapping = bp->fw_stats_mapping +
2311                 bp->fw_stats_req_sz;
2312
2313         DP(BNX2X_MSG_SP, "statistics request base address set to %x %x\n",
2314            U64_HI(bp->fw_stats_req_mapping),
2315            U64_LO(bp->fw_stats_req_mapping));
2316         DP(BNX2X_MSG_SP, "statistics data base address set to %x %x\n",
2317            U64_HI(bp->fw_stats_data_mapping),
2318            U64_LO(bp->fw_stats_data_mapping));
2319         return 0;
2320
2321 alloc_mem_err:
2322         bnx2x_free_fw_stats_mem(bp);
2323         BNX2X_ERR("Can't allocate FW stats memory\n");
2324         return -ENOMEM;
2325 }
2326
2327 /* send load request to mcp and analyze response */
2328 static int bnx2x_nic_load_request(struct bnx2x *bp, u32 *load_code)
2329 {
2330         u32 param;
2331
2332         /* init fw_seq */
2333         bp->fw_seq =
2334                 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
2335                  DRV_MSG_SEQ_NUMBER_MASK);
2336         BNX2X_DEV_INFO("fw_seq 0x%08x\n", bp->fw_seq);
2337
2338         /* Get current FW pulse sequence */
2339         bp->fw_drv_pulse_wr_seq =
2340                 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb) &
2341                  DRV_PULSE_SEQ_MASK);
2342         BNX2X_DEV_INFO("drv_pulse 0x%x\n", bp->fw_drv_pulse_wr_seq);
2343
2344         param = DRV_MSG_CODE_LOAD_REQ_WITH_LFA;
2345
2346         if (IS_MF_SD(bp) && bnx2x_port_after_undi(bp))
2347                 param |= DRV_MSG_CODE_LOAD_REQ_FORCE_LFA;
2348
2349         /* load request */
2350         (*load_code) = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, param);
2351
2352         /* if mcp fails to respond we must abort */
2353         if (!(*load_code)) {
2354                 BNX2X_ERR("MCP response failure, aborting\n");
2355                 return -EBUSY;
2356         }
2357
2358         /* If mcp refused (e.g. other port is in diagnostic mode) we
2359          * must abort
2360          */
2361         if ((*load_code) == FW_MSG_CODE_DRV_LOAD_REFUSED) {
2362                 BNX2X_ERR("MCP refused load request, aborting\n");
2363                 return -EBUSY;
2364         }
2365         return 0;
2366 }
2367
2368 /* check whether another PF has already loaded FW to chip. In
2369  * virtualized environments a pf from another VM may have already
2370  * initialized the device including loading FW
2371  */
2372 int bnx2x_compare_fw_ver(struct bnx2x *bp, u32 load_code, bool print_err)
2373 {
2374         /* is another pf loaded on this engine? */
2375         if (load_code != FW_MSG_CODE_DRV_LOAD_COMMON_CHIP &&
2376             load_code != FW_MSG_CODE_DRV_LOAD_COMMON) {
2377                 /* build my FW version dword */
2378                 u32 my_fw = (BCM_5710_FW_MAJOR_VERSION) +
2379                         (BCM_5710_FW_MINOR_VERSION << 8) +
2380                         (BCM_5710_FW_REVISION_VERSION << 16) +
2381                         (BCM_5710_FW_ENGINEERING_VERSION << 24);
2382
2383                 /* read loaded FW from chip */
2384                 u32 loaded_fw = REG_RD(bp, XSEM_REG_PRAM);
2385
2386                 DP(BNX2X_MSG_SP, "loaded fw %x, my fw %x\n",
2387                    loaded_fw, my_fw);
2388
2389                 /* abort nic load if version mismatch */
2390                 if (my_fw != loaded_fw) {
2391                         if (print_err)
2392                                 BNX2X_ERR("bnx2x with FW %x was already loaded which mismatches my %x FW. Aborting\n",
2393                                           loaded_fw, my_fw);
2394                         else
2395                                 BNX2X_DEV_INFO("bnx2x with FW %x was already loaded which mismatches my %x FW, possibly due to MF UNDI\n",
2396                                                loaded_fw, my_fw);
2397                         return -EBUSY;
2398                 }
2399         }
2400         return 0;
2401 }
2402
2403 /* returns the "mcp load_code" according to global load_count array */
2404 static int bnx2x_nic_load_no_mcp(struct bnx2x *bp, int port)
2405 {
2406         int path = BP_PATH(bp);
2407
2408         DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d]      %d, %d, %d\n",
2409            path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2410            bnx2x_load_count[path][2]);
2411         bnx2x_load_count[path][0]++;
2412         bnx2x_load_count[path][1 + port]++;
2413         DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d]  %d, %d, %d\n",
2414            path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2415            bnx2x_load_count[path][2]);
2416         if (bnx2x_load_count[path][0] == 1)
2417                 return FW_MSG_CODE_DRV_LOAD_COMMON;
2418         else if (bnx2x_load_count[path][1 + port] == 1)
2419                 return FW_MSG_CODE_DRV_LOAD_PORT;
2420         else
2421                 return FW_MSG_CODE_DRV_LOAD_FUNCTION;
2422 }
2423
2424 /* mark PMF if applicable */
2425 static void bnx2x_nic_load_pmf(struct bnx2x *bp, u32 load_code)
2426 {
2427         if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2428             (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
2429             (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
2430                 bp->port.pmf = 1;
2431                 /* We need the barrier to ensure the ordering between the
2432                  * writing to bp->port.pmf here and reading it from the
2433                  * bnx2x_periodic_task().
2434                  */
2435                 smp_mb();
2436         } else {
2437                 bp->port.pmf = 0;
2438         }
2439
2440         DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
2441 }
2442
2443 static void bnx2x_nic_load_afex_dcc(struct bnx2x *bp, int load_code)
2444 {
2445         if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2446              (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
2447             (bp->common.shmem2_base)) {
2448                 if (SHMEM2_HAS(bp, dcc_support))
2449                         SHMEM2_WR(bp, dcc_support,
2450                                   (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
2451                                    SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
2452                 if (SHMEM2_HAS(bp, afex_driver_support))
2453                         SHMEM2_WR(bp, afex_driver_support,
2454                                   SHMEM_AFEX_SUPPORTED_VERSION_ONE);
2455         }
2456
2457         /* Set AFEX default VLAN tag to an invalid value */
2458         bp->afex_def_vlan_tag = -1;
2459 }
2460
2461 /**
2462  * bnx2x_bz_fp - zero content of the fastpath structure.
2463  *
2464  * @bp:         driver handle
2465  * @index:      fastpath index to be zeroed
2466  *
2467  * Makes sure the contents of the bp->fp[index].napi is kept
2468  * intact.
2469  */
2470 static void bnx2x_bz_fp(struct bnx2x *bp, int index)
2471 {
2472         struct bnx2x_fastpath *fp = &bp->fp[index];
2473         int cos;
2474         struct napi_struct orig_napi = fp->napi;
2475         struct bnx2x_agg_info *orig_tpa_info = fp->tpa_info;
2476
2477         /* bzero bnx2x_fastpath contents */
2478         if (fp->tpa_info)
2479                 memset(fp->tpa_info, 0, ETH_MAX_AGGREGATION_QUEUES_E1H_E2 *
2480                        sizeof(struct bnx2x_agg_info));
2481         memset(fp, 0, sizeof(*fp));
2482
2483         /* Restore the NAPI object as it has been already initialized */
2484         fp->napi = orig_napi;
2485         fp->tpa_info = orig_tpa_info;
2486         fp->bp = bp;
2487         fp->index = index;
2488         if (IS_ETH_FP(fp))
2489                 fp->max_cos = bp->max_cos;
2490         else
2491                 /* Special queues support only one CoS */
2492                 fp->max_cos = 1;
2493
2494         /* Init txdata pointers */
2495         if (IS_FCOE_FP(fp))
2496                 fp->txdata_ptr[0] = &bp->bnx2x_txq[FCOE_TXQ_IDX(bp)];
2497         if (IS_ETH_FP(fp))
2498                 for_each_cos_in_tx_queue(fp, cos)
2499                         fp->txdata_ptr[cos] = &bp->bnx2x_txq[cos *
2500                                 BNX2X_NUM_ETH_QUEUES(bp) + index];
2501
2502         /* set the tpa flag for each queue. The tpa flag determines the queue
2503          * minimal size so it must be set prior to queue memory allocation
2504          */
2505         if (bp->dev->features & NETIF_F_LRO)
2506                 fp->mode = TPA_MODE_LRO;
2507         else if (bp->dev->features & NETIF_F_GRO &&
2508                  bnx2x_mtu_allows_gro(bp->dev->mtu))
2509                 fp->mode = TPA_MODE_GRO;
2510         else
2511                 fp->mode = TPA_MODE_DISABLED;
2512
2513         /* We don't want TPA if it's disabled in bp
2514          * or if this is an FCoE L2 ring.
2515          */
2516         if (bp->disable_tpa || IS_FCOE_FP(fp))
2517                 fp->mode = TPA_MODE_DISABLED;
2518 }
2519
2520 void bnx2x_set_os_driver_state(struct bnx2x *bp, u32 state)
2521 {
2522         u32 cur;
2523
2524         if (!IS_MF_BD(bp) || !SHMEM2_HAS(bp, os_driver_state) || IS_VF(bp))
2525                 return;
2526
2527         cur = SHMEM2_RD(bp, os_driver_state[BP_FW_MB_IDX(bp)]);
2528         DP(NETIF_MSG_IFUP, "Driver state %08x-->%08x\n",
2529            cur, state);
2530
2531         SHMEM2_WR(bp, os_driver_state[BP_FW_MB_IDX(bp)], state);
2532 }
2533
2534 int bnx2x_load_cnic(struct bnx2x *bp)
2535 {
2536         int i, rc, port = BP_PORT(bp);
2537
2538         DP(NETIF_MSG_IFUP, "Starting CNIC-related load\n");
2539
2540         mutex_init(&bp->cnic_mutex);
2541
2542         if (IS_PF(bp)) {
2543                 rc = bnx2x_alloc_mem_cnic(bp);
2544                 if (rc) {
2545                         BNX2X_ERR("Unable to allocate bp memory for cnic\n");
2546                         LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2547                 }
2548         }
2549
2550         rc = bnx2x_alloc_fp_mem_cnic(bp);
2551         if (rc) {
2552                 BNX2X_ERR("Unable to allocate memory for cnic fps\n");
2553                 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2554         }
2555
2556         /* Update the number of queues with the cnic queues */
2557         rc = bnx2x_set_real_num_queues(bp, 1);
2558         if (rc) {
2559                 BNX2X_ERR("Unable to set real_num_queues including cnic\n");
2560                 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2561         }
2562
2563         /* Add all CNIC NAPI objects */
2564         bnx2x_add_all_napi_cnic(bp);
2565         DP(NETIF_MSG_IFUP, "cnic napi added\n");
2566         bnx2x_napi_enable_cnic(bp);
2567
2568         rc = bnx2x_init_hw_func_cnic(bp);
2569         if (rc)
2570                 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic1);
2571
2572         bnx2x_nic_init_cnic(bp);
2573
2574         if (IS_PF(bp)) {
2575                 /* Enable Timer scan */
2576                 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
2577
2578                 /* setup cnic queues */
2579                 for_each_cnic_queue(bp, i) {
2580                         rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
2581                         if (rc) {
2582                                 BNX2X_ERR("Queue setup failed\n");
2583                                 LOAD_ERROR_EXIT(bp, load_error_cnic2);
2584                         }
2585                 }
2586         }
2587
2588         /* Initialize Rx filter. */
2589         bnx2x_set_rx_mode_inner(bp);
2590
2591         /* re-read iscsi info */
2592         bnx2x_get_iscsi_info(bp);
2593         bnx2x_setup_cnic_irq_info(bp);
2594         bnx2x_setup_cnic_info(bp);
2595         bp->cnic_loaded = true;
2596         if (bp->state == BNX2X_STATE_OPEN)
2597                 bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
2598
2599         DP(NETIF_MSG_IFUP, "Ending successfully CNIC-related load\n");
2600
2601         return 0;
2602
2603 #ifndef BNX2X_STOP_ON_ERROR
2604 load_error_cnic2:
2605         /* Disable Timer scan */
2606         REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
2607
2608 load_error_cnic1:
2609         bnx2x_napi_disable_cnic(bp);
2610         /* Update the number of queues without the cnic queues */
2611         if (bnx2x_set_real_num_queues(bp, 0))
2612                 BNX2X_ERR("Unable to set real_num_queues not including cnic\n");
2613 load_error_cnic0:
2614         BNX2X_ERR("CNIC-related load failed\n");
2615         bnx2x_free_fp_mem_cnic(bp);
2616         bnx2x_free_mem_cnic(bp);
2617         return rc;
2618 #endif /* ! BNX2X_STOP_ON_ERROR */
2619 }
2620
2621 /* must be called with rtnl_lock */
2622 int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
2623 {
2624         int port = BP_PORT(bp);
2625         int i, rc = 0, load_code = 0;
2626
2627         DP(NETIF_MSG_IFUP, "Starting NIC load\n");
2628         DP(NETIF_MSG_IFUP,
2629            "CNIC is %s\n", CNIC_ENABLED(bp) ? "enabled" : "disabled");
2630
2631 #ifdef BNX2X_STOP_ON_ERROR
2632         if (unlikely(bp->panic)) {
2633                 BNX2X_ERR("Can't load NIC when there is panic\n");
2634                 return -EPERM;
2635         }
2636 #endif
2637
2638         bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
2639
2640         /* zero the structure w/o any lock, before SP handler is initialized */
2641         memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
2642         __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
2643                 &bp->last_reported_link.link_report_flags);
2644
2645         if (IS_PF(bp))
2646                 /* must be called before memory allocation and HW init */
2647                 bnx2x_ilt_set_info(bp);
2648
2649         /*
2650          * Zero fastpath structures preserving invariants like napi, which are
2651          * allocated only once, fp index, max_cos, bp pointer.
2652          * Also set fp->mode and txdata_ptr.
2653          */
2654         DP(NETIF_MSG_IFUP, "num queues: %d", bp->num_queues);
2655         for_each_queue(bp, i)
2656                 bnx2x_bz_fp(bp, i);
2657         memset(bp->bnx2x_txq, 0, (BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS +
2658                                   bp->num_cnic_queues) *
2659                                   sizeof(struct bnx2x_fp_txdata));
2660
2661         bp->fcoe_init = false;
2662
2663         /* Set the receive queues buffer size */
2664         bnx2x_set_rx_buf_size(bp);
2665
2666         if (IS_PF(bp)) {
2667                 rc = bnx2x_alloc_mem(bp);
2668                 if (rc) {
2669                         BNX2X_ERR("Unable to allocate bp memory\n");
2670                         return rc;
2671                 }
2672         }
2673
2674         /* need to be done after alloc mem, since it's self adjusting to amount
2675          * of memory available for RSS queues
2676          */
2677         rc = bnx2x_alloc_fp_mem(bp);
2678         if (rc) {
2679                 BNX2X_ERR("Unable to allocate memory for fps\n");
2680                 LOAD_ERROR_EXIT(bp, load_error0);
2681         }
2682
2683         /* Allocated memory for FW statistics  */
2684         if (bnx2x_alloc_fw_stats_mem(bp))
2685                 LOAD_ERROR_EXIT(bp, load_error0);
2686
2687         /* request pf to initialize status blocks */
2688         if (IS_VF(bp)) {
2689                 rc = bnx2x_vfpf_init(bp);
2690                 if (rc)
2691                         LOAD_ERROR_EXIT(bp, load_error0);
2692         }
2693
2694         /* As long as bnx2x_alloc_mem() may possibly update
2695          * bp->num_queues, bnx2x_set_real_num_queues() should always
2696          * come after it. At this stage cnic queues are not counted.
2697          */
2698         rc = bnx2x_set_real_num_queues(bp, 0);
2699         if (rc) {
2700                 BNX2X_ERR("Unable to set real_num_queues\n");
2701                 LOAD_ERROR_EXIT(bp, load_error0);
2702         }
2703
2704         /* configure multi cos mappings in kernel.
2705          * this configuration may be overridden by a multi class queue
2706          * discipline or by a dcbx negotiation result.
2707          */
2708         bnx2x_setup_tc(bp->dev, bp->max_cos);
2709
2710         /* Add all NAPI objects */
2711         bnx2x_add_all_napi(bp);
2712         DP(NETIF_MSG_IFUP, "napi added\n");
2713         bnx2x_napi_enable(bp);
2714
2715         if (IS_PF(bp)) {
2716                 /* set pf load just before approaching the MCP */
2717                 bnx2x_set_pf_load(bp);
2718
2719                 /* if mcp exists send load request and analyze response */
2720                 if (!BP_NOMCP(bp)) {
2721                         /* attempt to load pf */
2722                         rc = bnx2x_nic_load_request(bp, &load_code);
2723                         if (rc)
2724                                 LOAD_ERROR_EXIT(bp, load_error1);
2725
2726                         /* what did mcp say? */
2727                         rc = bnx2x_compare_fw_ver(bp, load_code, true);
2728                         if (rc) {
2729                                 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2730                                 LOAD_ERROR_EXIT(bp, load_error2);
2731                         }
2732                 } else {
2733                         load_code = bnx2x_nic_load_no_mcp(bp, port);
2734                 }
2735
2736                 /* mark pmf if applicable */
2737                 bnx2x_nic_load_pmf(bp, load_code);
2738
2739                 /* Init Function state controlling object */
2740                 bnx2x__init_func_obj(bp);
2741
2742                 /* Initialize HW */
2743                 rc = bnx2x_init_hw(bp, load_code);
2744                 if (rc) {
2745                         BNX2X_ERR("HW init failed, aborting\n");
2746                         bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2747                         LOAD_ERROR_EXIT(bp, load_error2);
2748                 }
2749         }
2750
2751         bnx2x_pre_irq_nic_init(bp);
2752
2753         /* Connect to IRQs */
2754         rc = bnx2x_setup_irqs(bp);
2755         if (rc) {
2756                 BNX2X_ERR("setup irqs failed\n");
2757                 if (IS_PF(bp))
2758                         bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2759                 LOAD_ERROR_EXIT(bp, load_error2);
2760         }
2761
2762         /* Init per-function objects */
2763         if (IS_PF(bp)) {
2764                 /* Setup NIC internals and enable interrupts */
2765                 bnx2x_post_irq_nic_init(bp, load_code);
2766
2767                 bnx2x_init_bp_objs(bp);
2768                 bnx2x_iov_nic_init(bp);
2769
2770                 /* Set AFEX default VLAN tag to an invalid value */
2771                 bp->afex_def_vlan_tag = -1;
2772                 bnx2x_nic_load_afex_dcc(bp, load_code);
2773                 bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
2774                 rc = bnx2x_func_start(bp);
2775                 if (rc) {
2776                         BNX2X_ERR("Function start failed!\n");
2777                         bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2778
2779                         LOAD_ERROR_EXIT(bp, load_error3);
2780                 }
2781
2782                 /* Send LOAD_DONE command to MCP */
2783                 if (!BP_NOMCP(bp)) {
2784                         load_code = bnx2x_fw_command(bp,
2785                                                      DRV_MSG_CODE_LOAD_DONE, 0);
2786                         if (!load_code) {
2787                                 BNX2X_ERR("MCP response failure, aborting\n");
2788                                 rc = -EBUSY;
2789                                 LOAD_ERROR_EXIT(bp, load_error3);
2790                         }
2791                 }
2792
2793                 /* initialize FW coalescing state machines in RAM */
2794                 bnx2x_update_coalesce(bp);
2795         }
2796
2797         /* setup the leading queue */
2798         rc = bnx2x_setup_leading(bp);
2799         if (rc) {
2800                 BNX2X_ERR("Setup leading failed!\n");
2801                 LOAD_ERROR_EXIT(bp, load_error3);
2802         }
2803
2804         /* set up the rest of the queues */
2805         for_each_nondefault_eth_queue(bp, i) {
2806                 if (IS_PF(bp))
2807                         rc = bnx2x_setup_queue(bp, &bp->fp[i], false);
2808                 else /* VF */
2809                         rc = bnx2x_vfpf_setup_q(bp, &bp->fp[i], false);
2810                 if (rc) {
2811                         BNX2X_ERR("Queue %d setup failed\n", i);
2812                         LOAD_ERROR_EXIT(bp, load_error3);
2813                 }
2814         }
2815
2816         /* setup rss */
2817         rc = bnx2x_init_rss(bp);
2818         if (rc) {
2819                 BNX2X_ERR("PF RSS init failed\n");
2820                 LOAD_ERROR_EXIT(bp, load_error3);
2821         }
2822
2823         /* Now when Clients are configured we are ready to work */
2824         bp->state = BNX2X_STATE_OPEN;
2825
2826         /* Configure a ucast MAC */
2827         if (IS_PF(bp))
2828                 rc = bnx2x_set_eth_mac(bp, true);
2829         else /* vf */
2830                 rc = bnx2x_vfpf_config_mac(bp, bp->dev->dev_addr, bp->fp->index,
2831                                            true);
2832         if (rc) {
2833                 BNX2X_ERR("Setting Ethernet MAC failed\n");
2834                 LOAD_ERROR_EXIT(bp, load_error3);
2835         }
2836
2837         if (IS_PF(bp) && bp->pending_max) {
2838                 bnx2x_update_max_mf_config(bp, bp->pending_max);
2839                 bp->pending_max = 0;
2840         }
2841
2842         if (bp->port.pmf) {
2843                 rc = bnx2x_initial_phy_init(bp, load_mode);
2844                 if (rc)
2845                         LOAD_ERROR_EXIT(bp, load_error3);
2846         }
2847         bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_BOOT_FROM_SAN;
2848
2849         /* Start fast path */
2850
2851         /* Re-configure vlan filters */
2852         rc = bnx2x_vlan_reconfigure_vid(bp);
2853         if (rc)
2854                 LOAD_ERROR_EXIT(bp, load_error3);
2855
2856         /* Initialize Rx filter. */
2857         bnx2x_set_rx_mode_inner(bp);
2858
2859         if (bp->flags & PTP_SUPPORTED) {
2860                 bnx2x_init_ptp(bp);
2861                 bnx2x_configure_ptp_filters(bp);
2862         }
2863         /* Start Tx */
2864         switch (load_mode) {
2865         case LOAD_NORMAL:
2866                 /* Tx queue should be only re-enabled */
2867                 netif_tx_wake_all_queues(bp->dev);
2868                 break;
2869
2870         case LOAD_OPEN:
2871                 netif_tx_start_all_queues(bp->dev);
2872                 smp_mb__after_atomic();
2873                 break;
2874
2875         case LOAD_DIAG:
2876         case LOAD_LOOPBACK_EXT:
2877                 bp->state = BNX2X_STATE_DIAG;
2878                 break;
2879
2880         default:
2881                 break;
2882         }
2883
2884         if (bp->port.pmf)
2885                 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_PORT_MASK, 0);
2886         else
2887                 bnx2x__link_status_update(bp);
2888
2889         /* start the timer */
2890         mod_timer(&bp->timer, jiffies + bp->current_interval);
2891
2892         if (CNIC_ENABLED(bp))
2893                 bnx2x_load_cnic(bp);
2894
2895         if (IS_PF(bp))
2896                 bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_GET_DRV_VERSION, 0);
2897
2898         if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
2899                 /* mark driver is loaded in shmem2 */
2900                 u32 val;
2901                 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2902                 val &= ~DRV_FLAGS_MTU_MASK;
2903                 val |= (bp->dev->mtu << DRV_FLAGS_MTU_SHIFT);
2904                 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2905                           val | DRV_FLAGS_CAPABILITIES_LOADED_SUPPORTED |
2906                           DRV_FLAGS_CAPABILITIES_LOADED_L2);
2907         }
2908
2909         /* Wait for all pending SP commands to complete */
2910         if (IS_PF(bp) && !bnx2x_wait_sp_comp(bp, ~0x0UL)) {
2911                 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
2912                 bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
2913                 return -EBUSY;
2914         }
2915
2916         /* Update driver data for On-Chip MFW dump. */
2917         if (IS_PF(bp))
2918                 bnx2x_update_mfw_dump(bp);
2919
2920         /* If PMF - send ADMIN DCBX msg to MFW to initiate DCBX FSM */
2921         if (bp->port.pmf && (bp->state != BNX2X_STATE_DIAG))
2922                 bnx2x_dcbx_init(bp, false);
2923
2924         if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2925                 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_ACTIVE);
2926
2927         DP(NETIF_MSG_IFUP, "Ending successfully NIC load\n");
2928
2929         return 0;
2930
2931 #ifndef BNX2X_STOP_ON_ERROR
2932 load_error3:
2933         if (IS_PF(bp)) {
2934                 bnx2x_int_disable_sync(bp, 1);
2935
2936                 /* Clean queueable objects */
2937                 bnx2x_squeeze_objects(bp);
2938         }
2939
2940         /* Free SKBs, SGEs, TPA pool and driver internals */
2941         bnx2x_free_skbs(bp);
2942         for_each_rx_queue(bp, i)
2943                 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2944
2945         /* Release IRQs */
2946         bnx2x_free_irq(bp);
2947 load_error2:
2948         if (IS_PF(bp) && !BP_NOMCP(bp)) {
2949                 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
2950                 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
2951         }
2952
2953         bp->port.pmf = 0;
2954 load_error1:
2955         bnx2x_napi_disable(bp);
2956         bnx2x_del_all_napi(bp);
2957
2958         /* clear pf_load status, as it was already set */
2959         if (IS_PF(bp))
2960                 bnx2x_clear_pf_load(bp);
2961 load_error0:
2962         bnx2x_free_fw_stats_mem(bp);
2963         bnx2x_free_fp_mem(bp);
2964         bnx2x_free_mem(bp);
2965
2966         return rc;
2967 #endif /* ! BNX2X_STOP_ON_ERROR */
2968 }
2969
2970 int bnx2x_drain_tx_queues(struct bnx2x *bp)
2971 {
2972         u8 rc = 0, cos, i;
2973
2974         /* Wait until tx fastpath tasks complete */
2975         for_each_tx_queue(bp, i) {
2976                 struct bnx2x_fastpath *fp = &bp->fp[i];
2977
2978                 for_each_cos_in_tx_queue(fp, cos)
2979                         rc = bnx2x_clean_tx_queue(bp, fp->txdata_ptr[cos]);
2980                 if (rc)
2981                         return rc;
2982         }
2983         return 0;
2984 }
2985
2986 /* must be called with rtnl_lock */
2987 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode, bool keep_link)
2988 {
2989         int i;
2990         bool global = false;
2991
2992         DP(NETIF_MSG_IFUP, "Starting NIC unload\n");
2993
2994         if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2995                 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_DISABLED);
2996
2997         /* mark driver is unloaded in shmem2 */
2998         if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
2999                 u32 val;
3000                 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
3001                 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
3002                           val & ~DRV_FLAGS_CAPABILITIES_LOADED_L2);
3003         }
3004
3005         if (IS_PF(bp) && bp->recovery_state != BNX2X_RECOVERY_DONE &&
3006             (bp->state == BNX2X_STATE_CLOSED ||
3007              bp->state == BNX2X_STATE_ERROR)) {
3008                 /* We can get here if the driver has been unloaded
3009                  * during parity error recovery and is either waiting for a
3010                  * leader to complete or for other functions to unload and
3011                  * then ifdown has been issued. In this case we want to
3012                  * unload and let other functions to complete a recovery
3013                  * process.
3014                  */
3015                 bp->recovery_state = BNX2X_RECOVERY_DONE;
3016                 bp->is_leader = 0;
3017                 bnx2x_release_leader_lock(bp);
3018                 smp_mb();
3019
3020                 DP(NETIF_MSG_IFDOWN, "Releasing a leadership...\n");
3021                 BNX2X_ERR("Can't unload in closed or error state\n");
3022                 return -EINVAL;
3023         }
3024
3025         /* Nothing to do during unload if previous bnx2x_nic_load()
3026          * have not completed successfully - all resources are released.
3027          *
3028          * we can get here only after unsuccessful ndo_* callback, during which
3029          * dev->IFF_UP flag is still on.
3030          */
3031         if (bp->state == BNX2X_STATE_CLOSED || bp->state == BNX2X_STATE_ERROR)
3032                 return 0;
3033
3034         /* It's important to set the bp->state to the value different from
3035          * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
3036          * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
3037          */
3038         bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
3039         smp_mb();
3040
3041         /* indicate to VFs that the PF is going down */
3042         bnx2x_iov_channel_down(bp);
3043
3044         if (CNIC_LOADED(bp))
3045                 bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
3046
3047         /* Stop Tx */
3048         bnx2x_tx_disable(bp);
3049         netdev_reset_tc(bp->dev);
3050
3051         bp->rx_mode = BNX2X_RX_MODE_NONE;
3052
3053         del_timer_sync(&bp->timer);
3054
3055         if (IS_PF(bp)) {
3056                 /* Set ALWAYS_ALIVE bit in shmem */
3057                 bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
3058                 bnx2x_drv_pulse(bp);
3059                 bnx2x_stats_handle(bp, STATS_EVENT_STOP);
3060                 bnx2x_save_statistics(bp);
3061         }
3062
3063         /* wait till consumers catch up with producers in all queues */
3064         bnx2x_drain_tx_queues(bp);
3065
3066         /* if VF indicate to PF this function is going down (PF will delete sp
3067          * elements and clear initializations
3068          */
3069         if (IS_VF(bp))
3070                 bnx2x_vfpf_close_vf(bp);
3071         else if (unload_mode != UNLOAD_RECOVERY)
3072                 /* if this is a normal/close unload need to clean up chip*/
3073                 bnx2x_chip_cleanup(bp, unload_mode, keep_link);
3074         else {
3075                 /* Send the UNLOAD_REQUEST to the MCP */
3076                 bnx2x_send_unload_req(bp, unload_mode);
3077
3078                 /* Prevent transactions to host from the functions on the
3079                  * engine that doesn't reset global blocks in case of global
3080                  * attention once global blocks are reset and gates are opened
3081                  * (the engine which leader will perform the recovery
3082                  * last).
3083                  */
3084                 if (!CHIP_IS_E1x(bp))
3085                         bnx2x_pf_disable(bp);
3086
3087                 /* Disable HW interrupts, NAPI */
3088                 bnx2x_netif_stop(bp, 1);
3089                 /* Delete all NAPI objects */
3090                 bnx2x_del_all_napi(bp);
3091                 if (CNIC_LOADED(bp))
3092                         bnx2x_del_all_napi_cnic(bp);
3093                 /* Release IRQs */
3094                 bnx2x_free_irq(bp);
3095
3096                 /* Report UNLOAD_DONE to MCP */
3097                 bnx2x_send_unload_done(bp, false);
3098         }
3099
3100         /*
3101          * At this stage no more interrupts will arrive so we may safely clean
3102          * the queueable objects here in case they failed to get cleaned so far.
3103          */
3104         if (IS_PF(bp))
3105                 bnx2x_squeeze_objects(bp);
3106
3107         /* There should be no more pending SP commands at this stage */
3108         bp->sp_state = 0;
3109
3110         bp->port.pmf = 0;
3111
3112         /* clear pending work in rtnl task */
3113         bp->sp_rtnl_state = 0;
3114         smp_mb();
3115
3116         /* Free SKBs, SGEs, TPA pool and driver internals */
3117         bnx2x_free_skbs(bp);
3118         if (CNIC_LOADED(bp))
3119                 bnx2x_free_skbs_cnic(bp);
3120         for_each_rx_queue(bp, i)
3121                 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
3122
3123         bnx2x_free_fp_mem(bp);
3124         if (CNIC_LOADED(bp))
3125                 bnx2x_free_fp_mem_cnic(bp);
3126
3127         if (IS_PF(bp)) {
3128                 if (CNIC_LOADED(bp))
3129                         bnx2x_free_mem_cnic(bp);
3130         }
3131         bnx2x_free_mem(bp);
3132
3133         bp->state = BNX2X_STATE_CLOSED;
3134         bp->cnic_loaded = false;
3135
3136         /* Clear driver version indication in shmem */
3137         if (IS_PF(bp))
3138                 bnx2x_update_mng_version(bp);
3139
3140         /* Check if there are pending parity attentions. If there are - set
3141          * RECOVERY_IN_PROGRESS.
3142          */
3143         if (IS_PF(bp) && bnx2x_chk_parity_attn(bp, &global, false)) {
3144                 bnx2x_set_reset_in_progress(bp);
3145
3146                 /* Set RESET_IS_GLOBAL if needed */
3147                 if (global)
3148                         bnx2x_set_reset_global(bp);
3149         }
3150
3151         /* The last driver must disable a "close the gate" if there is no
3152          * parity attention or "process kill" pending.
3153          */
3154         if (IS_PF(bp) &&
3155             !bnx2x_clear_pf_load(bp) &&
3156             bnx2x_reset_is_done(bp, BP_PATH(bp)))
3157                 bnx2x_disable_close_the_gate(bp);
3158
3159         DP(NETIF_MSG_IFUP, "Ending NIC unload\n");
3160
3161         return 0;
3162 }
3163
3164 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
3165 {
3166         u16 pmcsr;
3167
3168         /* If there is no power capability, silently succeed */
3169         if (!bp->pdev->pm_cap) {
3170                 BNX2X_DEV_INFO("No power capability. Breaking.\n");
3171                 return 0;
3172         }
3173
3174         pci_read_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL, &pmcsr);
3175
3176         switch (state) {
3177         case PCI_D0:
3178                 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3179                                       ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
3180                                        PCI_PM_CTRL_PME_STATUS));
3181
3182                 if (pmcsr & PCI_PM_CTRL_STATE_MASK)
3183                         /* delay required during transition out of D3hot */
3184                         msleep(20);
3185                 break;
3186
3187         case PCI_D3hot:
3188                 /* If there are other clients above don't
3189                    shut down the power */
3190                 if (atomic_read(&bp->pdev->enable_cnt) != 1)
3191                         return 0;
3192                 /* Don't shut down the power for emulation and FPGA */
3193                 if (CHIP_REV_IS_SLOW(bp))
3194                         return 0;
3195
3196                 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3197                 pmcsr |= 3;
3198
3199                 if (bp->wol)
3200                         pmcsr |= PCI_PM_CTRL_PME_ENABLE;
3201
3202                 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3203                                       pmcsr);
3204
3205                 /* No more memory access after this point until
3206                 * device is brought back to D0.
3207                 */
3208                 break;
3209
3210         default:
3211                 dev_err(&bp->pdev->dev, "Can't support state = %d\n", state);
3212                 return -EINVAL;
3213         }
3214         return 0;
3215 }
3216
3217 /*
3218  * net_device service functions
3219  */
3220 static int bnx2x_poll(struct napi_struct *napi, int budget)
3221 {
3222         int work_done = 0;
3223         u8 cos;
3224         struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
3225                                                  napi);
3226         struct bnx2x *bp = fp->bp;
3227
3228         while (1) {
3229 #ifdef BNX2X_STOP_ON_ERROR
3230                 if (unlikely(bp->panic)) {
3231                         napi_complete(napi);
3232                         return 0;
3233                 }
3234 #endif
3235                 if (!bnx2x_fp_lock_napi(fp))
3236                         return budget;
3237
3238                 for_each_cos_in_tx_queue(fp, cos)
3239                         if (bnx2x_tx_queue_has_work(fp->txdata_ptr[cos]))
3240                                 bnx2x_tx_int(bp, fp->txdata_ptr[cos]);
3241
3242                 if (bnx2x_has_rx_work(fp)) {
3243                         work_done += bnx2x_rx_int(fp, budget - work_done);
3244
3245                         /* must not complete if we consumed full budget */
3246                         if (work_done >= budget) {
3247                                 bnx2x_fp_unlock_napi(fp);
3248                                 break;
3249                         }
3250                 }
3251
3252                 bnx2x_fp_unlock_napi(fp);
3253
3254                 /* Fall out from the NAPI loop if needed */
3255                 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
3256
3257                         /* No need to update SB for FCoE L2 ring as long as
3258                          * it's connected to the default SB and the SB
3259                          * has been updated when NAPI was scheduled.
3260                          */
3261                         if (IS_FCOE_FP(fp)) {
3262                                 napi_complete(napi);
3263                                 break;
3264                         }
3265                         bnx2x_update_fpsb_idx(fp);
3266                         /* bnx2x_has_rx_work() reads the status block,
3267                          * thus we need to ensure that status block indices
3268                          * have been actually read (bnx2x_update_fpsb_idx)
3269                          * prior to this check (bnx2x_has_rx_work) so that
3270                          * we won't write the "newer" value of the status block
3271                          * to IGU (if there was a DMA right after
3272                          * bnx2x_has_rx_work and if there is no rmb, the memory
3273                          * reading (bnx2x_update_fpsb_idx) may be postponed
3274                          * to right before bnx2x_ack_sb). In this case there
3275                          * will never be another interrupt until there is
3276                          * another update of the status block, while there
3277                          * is still unhandled work.
3278                          */
3279                         rmb();
3280
3281                         if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
3282                                 napi_complete(napi);
3283                                 /* Re-enable interrupts */
3284                                 DP(NETIF_MSG_RX_STATUS,
3285                                    "Update index to %d\n", fp->fp_hc_idx);
3286                                 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
3287                                              le16_to_cpu(fp->fp_hc_idx),
3288                                              IGU_INT_ENABLE, 1);
3289                                 break;
3290                         }
3291                 }
3292         }
3293
3294         return work_done;
3295 }
3296
3297 #ifdef CONFIG_NET_RX_BUSY_POLL
3298 /* must be called with local_bh_disable()d */
3299 int bnx2x_low_latency_recv(struct napi_struct *napi)
3300 {
3301         struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
3302                                                  napi);
3303         struct bnx2x *bp = fp->bp;
3304         int found = 0;
3305
3306         if ((bp->state == BNX2X_STATE_CLOSED) ||
3307             (bp->state == BNX2X_STATE_ERROR) ||
3308             (bp->dev->features & (NETIF_F_LRO | NETIF_F_GRO)))
3309                 return LL_FLUSH_FAILED;
3310
3311         if (!bnx2x_fp_lock_poll(fp))
3312                 return LL_FLUSH_BUSY;
3313
3314         if (bnx2x_has_rx_work(fp))
3315                 found = bnx2x_rx_int(fp, 4);
3316
3317         bnx2x_fp_unlock_poll(fp);
3318
3319         return found;
3320 }
3321 #endif
3322
3323 /* we split the first BD into headers and data BDs
3324  * to ease the pain of our fellow microcode engineers
3325  * we use one mapping for both BDs
3326  */
3327 static u16 bnx2x_tx_split(struct bnx2x *bp,
3328                           struct bnx2x_fp_txdata *txdata,
3329                           struct sw_tx_bd *tx_buf,
3330                           struct eth_tx_start_bd **tx_bd, u16 hlen,
3331                           u16 bd_prod)
3332 {
3333         struct eth_tx_start_bd *h_tx_bd = *tx_bd;
3334         struct eth_tx_bd *d_tx_bd;
3335         dma_addr_t mapping;
3336         int old_len = le16_to_cpu(h_tx_bd->nbytes);
3337
3338         /* first fix first BD */
3339         h_tx_bd->nbytes = cpu_to_le16(hlen);
3340
3341         DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d (%x:%x)\n",
3342            h_tx_bd->nbytes, h_tx_bd->addr_hi, h_tx_bd->addr_lo);
3343
3344         /* now get a new data BD
3345          * (after the pbd) and fill it */
3346         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3347         d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
3348
3349         mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
3350                            le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
3351
3352         d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
3353         d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
3354         d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
3355
3356         /* this marks the BD as one that has no individual mapping */
3357         tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
3358
3359         DP(NETIF_MSG_TX_QUEUED,
3360            "TSO split data size is %d (%x:%x)\n",
3361            d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
3362
3363         /* update tx_bd */
3364         *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
3365
3366         return bd_prod;
3367 }
3368
3369 #define bswab32(b32) ((__force __le32) swab32((__force __u32) (b32)))
3370 #define bswab16(b16) ((__force __le16) swab16((__force __u16) (b16)))
3371 static __le16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
3372 {
3373         __sum16 tsum = (__force __sum16) csum;
3374
3375         if (fix > 0)
3376                 tsum = ~csum_fold(csum_sub((__force __wsum) csum,
3377                                   csum_partial(t_header - fix, fix, 0)));
3378
3379         else if (fix < 0)
3380                 tsum = ~csum_fold(csum_add((__force __wsum) csum,
3381                                   csum_partial(t_header, -fix, 0)));
3382
3383         return bswab16(tsum);
3384 }
3385
3386 static u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
3387 {
3388         u32 rc;
3389         __u8 prot = 0;
3390         __be16 protocol;
3391
3392         if (skb->ip_summed != CHECKSUM_PARTIAL)
3393                 return XMIT_PLAIN;
3394
3395         protocol = vlan_get_protocol(skb);
3396         if (protocol == htons(ETH_P_IPV6)) {
3397                 rc = XMIT_CSUM_V6;
3398                 prot = ipv6_hdr(skb)->nexthdr;
3399         } else {
3400                 rc = XMIT_CSUM_V4;
3401                 prot = ip_hdr(skb)->protocol;
3402         }
3403
3404         if (!CHIP_IS_E1x(bp) && skb->encapsulation) {
3405                 if (inner_ip_hdr(skb)->version == 6) {
3406                         rc |= XMIT_CSUM_ENC_V6;
3407                         if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3408                                 rc |= XMIT_CSUM_TCP;
3409                 } else {
3410                         rc |= XMIT_CSUM_ENC_V4;
3411                         if (inner_ip_hdr(skb)->protocol == IPPROTO_TCP)
3412                                 rc |= XMIT_CSUM_TCP;
3413                 }
3414         }
3415         if (prot == IPPROTO_TCP)
3416                 rc |= XMIT_CSUM_TCP;
3417
3418         if (skb_is_gso(skb)) {
3419                 if (skb_is_gso_v6(skb)) {
3420                         rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP);
3421                         if (rc & XMIT_CSUM_ENC)
3422                                 rc |= XMIT_GSO_ENC_V6;
3423                 } else {
3424                         rc |= (XMIT_GSO_V4 | XMIT_CSUM_TCP);
3425                         if (rc & XMIT_CSUM_ENC)
3426                                 rc |= XMIT_GSO_ENC_V4;
3427                 }
3428         }
3429
3430         return rc;
3431 }
3432
3433 /* VXLAN: 4 = 1 (for linear data BD) + 3 (2 for PBD and last BD) */
3434 #define BNX2X_NUM_VXLAN_TSO_WIN_SUB_BDS         4
3435
3436 /* Regular: 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
3437 #define BNX2X_NUM_TSO_WIN_SUB_BDS               3
3438
3439 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - BDS_PER_TX_PKT)
3440 /* check if packet requires linearization (packet is too fragmented)
3441    no need to check fragmentation if page size > 8K (there will be no
3442    violation to FW restrictions) */
3443 static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
3444                              u32 xmit_type)
3445 {
3446         int first_bd_sz = 0, num_tso_win_sub = BNX2X_NUM_TSO_WIN_SUB_BDS;
3447         int to_copy = 0, hlen = 0;
3448
3449         if (xmit_type & XMIT_GSO_ENC)
3450                 num_tso_win_sub = BNX2X_NUM_VXLAN_TSO_WIN_SUB_BDS;
3451
3452         if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - num_tso_win_sub)) {
3453                 if (xmit_type & XMIT_GSO) {
3454                         unsigned short lso_mss = skb_shinfo(skb)->gso_size;
3455                         int wnd_size = MAX_FETCH_BD - num_tso_win_sub;
3456                         /* Number of windows to check */
3457                         int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
3458                         int wnd_idx = 0;
3459                         int frag_idx = 0;
3460                         u32 wnd_sum = 0;
3461
3462                         /* Headers length */
3463                         if (xmit_type & XMIT_GSO_ENC)
3464                                 hlen = (int)(skb_inner_transport_header(skb) -
3465                                              skb->data) +
3466                                              inner_tcp_hdrlen(skb);
3467                         else
3468                                 hlen = (int)(skb_transport_header(skb) -
3469                                              skb->data) + tcp_hdrlen(skb);
3470
3471                         /* Amount of data (w/o headers) on linear part of SKB*/
3472                         first_bd_sz = skb_headlen(skb) - hlen;
3473
3474                         wnd_sum  = first_bd_sz;
3475
3476                         /* Calculate the first sum - it's special */
3477                         for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
3478                                 wnd_sum +=
3479                                         skb_frag_size(&skb_shinfo(skb)->frags[frag_idx]);
3480
3481                         /* If there was data on linear skb data - check it */
3482                         if (first_bd_sz > 0) {
3483                                 if (unlikely(wnd_sum < lso_mss)) {
3484                                         to_copy = 1;
3485                                         goto exit_lbl;
3486                                 }
3487
3488                                 wnd_sum -= first_bd_sz;
3489                         }
3490
3491                         /* Others are easier: run through the frag list and
3492                            check all windows */
3493                         for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
3494                                 wnd_sum +=
3495                           skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1]);
3496
3497                                 if (unlikely(wnd_sum < lso_mss)) {
3498                                         to_copy = 1;
3499                                         break;
3500                                 }
3501                                 wnd_sum -=
3502                                         skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx]);
3503                         }
3504                 } else {
3505                         /* in non-LSO too fragmented packet should always
3506                            be linearized */
3507                         to_copy = 1;
3508                 }
3509         }
3510
3511 exit_lbl:
3512         if (unlikely(to_copy))
3513                 DP(NETIF_MSG_TX_QUEUED,
3514                    "Linearization IS REQUIRED for %s packet. num_frags %d  hlen %d  first_bd_sz %d\n",
3515                    (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
3516                    skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
3517
3518         return to_copy;
3519 }
3520 #endif
3521
3522 /**
3523  * bnx2x_set_pbd_gso - update PBD in GSO case.
3524  *
3525  * @skb:        packet skb
3526  * @pbd:        parse BD
3527  * @xmit_type:  xmit flags
3528  */
3529 static void bnx2x_set_pbd_gso(struct sk_buff *skb,
3530                               struct eth_tx_parse_bd_e1x *pbd,
3531                               u32 xmit_type)
3532 {
3533         pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
3534         pbd->tcp_send_seq = bswab32(tcp_hdr(skb)->seq);
3535         pbd->tcp_flags = pbd_tcp_flags(tcp_hdr(skb));
3536
3537         if (xmit_type & XMIT_GSO_V4) {
3538                 pbd->ip_id = bswab16(ip_hdr(skb)->id);
3539                 pbd->tcp_pseudo_csum =
3540                         bswab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
3541                                                    ip_hdr(skb)->daddr,
3542                                                    0, IPPROTO_TCP, 0));
3543         } else {
3544                 pbd->tcp_pseudo_csum =
3545                         bswab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3546                                                  &ipv6_hdr(skb)->daddr,
3547                                                  0, IPPROTO_TCP, 0));
3548         }
3549
3550         pbd->global_data |=
3551                 cpu_to_le16(ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN);
3552 }
3553
3554 /**
3555  * bnx2x_set_pbd_csum_enc - update PBD with checksum and return header length
3556  *
3557  * @bp:                 driver handle
3558  * @skb:                packet skb
3559  * @parsing_data:       data to be updated
3560  * @xmit_type:          xmit flags
3561  *
3562  * 57712/578xx related, when skb has encapsulation
3563  */
3564 static u8 bnx2x_set_pbd_csum_enc(struct bnx2x *bp, struct sk_buff *skb,
3565                                  u32 *parsing_data, u32 xmit_type)
3566 {
3567         *parsing_data |=
3568                 ((((u8 *)skb_inner_transport_header(skb) - skb->data) >> 1) <<
3569                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3570                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3571
3572         if (xmit_type & XMIT_CSUM_TCP) {
3573                 *parsing_data |= ((inner_tcp_hdrlen(skb) / 4) <<
3574                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3575                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3576
3577                 return skb_inner_transport_header(skb) +
3578                         inner_tcp_hdrlen(skb) - skb->data;
3579         }
3580
3581         /* We support checksum offload for TCP and UDP only.
3582          * No need to pass the UDP header length - it's a constant.
3583          */
3584         return skb_inner_transport_header(skb) +
3585                 sizeof(struct udphdr) - skb->data;
3586 }
3587
3588 /**
3589  * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
3590  *
3591  * @bp:                 driver handle
3592  * @skb:                packet skb
3593  * @parsing_data:       data to be updated
3594  * @xmit_type:          xmit flags
3595  *
3596  * 57712/578xx related
3597  */
3598 static u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
3599                                 u32 *parsing_data, u32 xmit_type)
3600 {
3601         *parsing_data |=
3602                 ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
3603                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3604                 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3605
3606         if (xmit_type & XMIT_CSUM_TCP) {
3607                 *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
3608                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3609                         ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3610
3611                 return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
3612         }
3613         /* We support checksum offload for TCP and UDP only.
3614          * No need to pass the UDP header length - it's a constant.
3615          */
3616         return skb_transport_header(skb) + sizeof(struct udphdr) - skb->data;
3617 }
3618
3619 /* set FW indication according to inner or outer protocols if tunneled */
3620 static void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3621                                struct eth_tx_start_bd *tx_start_bd,
3622                                u32 xmit_type)
3623 {
3624         tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
3625
3626         if (xmit_type & (XMIT_CSUM_ENC_V6 | XMIT_CSUM_V6))
3627                 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IPV6;
3628
3629         if (!(xmit_type & XMIT_CSUM_TCP))
3630                 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
3631 }
3632
3633 /**
3634  * bnx2x_set_pbd_csum - update PBD with checksum and return header length
3635  *
3636  * @bp:         driver handle
3637  * @skb:        packet skb
3638  * @pbd:        parse BD to be updated
3639  * @xmit_type:  xmit flags
3640  */
3641 static u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3642                              struct eth_tx_parse_bd_e1x *pbd,
3643                              u32 xmit_type)
3644 {
3645         u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
3646
3647         /* for now NS flag is not used in Linux */
3648         pbd->global_data =
3649                 cpu_to_le16(hlen |
3650                             ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3651                              ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
3652
3653         pbd->ip_hlen_w = (skb_transport_header(skb) -
3654                         skb_network_header(skb)) >> 1;
3655
3656         hlen += pbd->ip_hlen_w;
3657
3658         /* We support checksum offload for TCP and UDP only */
3659         if (xmit_type & XMIT_CSUM_TCP)
3660                 hlen += tcp_hdrlen(skb) / 2;
3661         else
3662                 hlen += sizeof(struct udphdr) / 2;
3663
3664         pbd->total_hlen_w = cpu_to_le16(hlen);
3665         hlen = hlen*2;
3666
3667         if (xmit_type & XMIT_CSUM_TCP) {
3668                 pbd->tcp_pseudo_csum = bswab16(tcp_hdr(skb)->check);
3669
3670         } else {
3671                 s8 fix = SKB_CS_OFF(skb); /* signed! */
3672
3673                 DP(NETIF_MSG_TX_QUEUED,
3674                    "hlen %d  fix %d  csum before fix %x\n",
3675                    le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
3676
3677                 /* HW bug: fixup the CSUM */
3678                 pbd->tcp_pseudo_csum =
3679                         bnx2x_csum_fix(skb_transport_header(skb),
3680                                        SKB_CS(skb), fix);
3681
3682                 DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
3683                    pbd->tcp_pseudo_csum);
3684         }
3685
3686         return hlen;
3687 }
3688
3689 static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb,
3690                                       struct eth_tx_parse_bd_e2 *pbd_e2,
3691                                       struct eth_tx_parse_2nd_bd *pbd2,
3692                                       u16 *global_data,
3693                                       u32 xmit_type)
3694 {
3695         u16 hlen_w = 0;
3696         u8 outerip_off, outerip_len = 0;
3697
3698         /* from outer IP to transport */
3699         hlen_w = (skb_inner_transport_header(skb) -
3700                   skb_network_header(skb)) >> 1;
3701
3702         /* transport len */
3703         hlen_w += inner_tcp_hdrlen(skb) >> 1;
3704
3705         pbd2->fw_ip_hdr_to_payload_w = hlen_w;
3706
3707         /* outer IP header info */
3708         if (xmit_type & XMIT_CSUM_V4) {
3709                 struct iphdr *iph = ip_hdr(skb);
3710                 u32 csum = (__force u32)(~iph->check) -
3711                            (__force u32)iph->tot_len -
3712                            (__force u32)iph->frag_off;
3713
3714                 outerip_len = iph->ihl << 1;
3715
3716                 pbd2->fw_ip_csum_wo_len_flags_frag =
3717                         bswab16(csum_fold((__force __wsum)csum));
3718         } else {
3719                 pbd2->fw_ip_hdr_to_payload_w =
3720                         hlen_w - ((sizeof(struct ipv6hdr)) >> 1);
3721                 pbd_e2->data.tunnel_data.flags |=
3722                         ETH_TUNNEL_DATA_IPV6_OUTER;
3723         }
3724
3725         pbd2->tcp_send_seq = bswab32(inner_tcp_hdr(skb)->seq);
3726
3727         pbd2->tcp_flags = pbd_tcp_flags(inner_tcp_hdr(skb));
3728
3729         /* inner IP header info */
3730         if (xmit_type & XMIT_CSUM_ENC_V4) {
3731                 pbd2->hw_ip_id = bswab16(inner_ip_hdr(skb)->id);
3732
3733                 pbd_e2->data.tunnel_data.pseudo_csum =
3734                         bswab16(~csum_tcpudp_magic(
3735                                         inner_ip_hdr(skb)->saddr,
3736                                         inner_ip_hdr(skb)->daddr,
3737                                         0, IPPROTO_TCP, 0));
3738         } else {
3739                 pbd_e2->data.tunnel_data.pseudo_csum =
3740                         bswab16(~csum_ipv6_magic(
3741                                         &inner_ipv6_hdr(skb)->saddr,
3742                                         &inner_ipv6_hdr(skb)->daddr,
3743                                         0, IPPROTO_TCP, 0));
3744         }
3745
3746         outerip_off = (skb_network_header(skb) - skb->data) >> 1;
3747
3748         *global_data |=
3749                 outerip_off |
3750                 (outerip_len <<
3751                         ETH_TX_PARSE_2ND_BD_IP_HDR_LEN_OUTER_W_SHIFT) |
3752                 ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3753                         ETH_TX_PARSE_2ND_BD_LLC_SNAP_EN_SHIFT);
3754
3755         if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
3756                 SET_FLAG(*global_data, ETH_TX_PARSE_2ND_BD_TUNNEL_UDP_EXIST, 1);
3757                 pbd2->tunnel_udp_hdr_start_w = skb_transport_offset(skb) >> 1;
3758         }
3759 }
3760
3761 static inline void bnx2x_set_ipv6_ext_e2(struct sk_buff *skb, u32 *parsing_data,
3762                                          u32 xmit_type)
3763 {
3764         struct ipv6hdr *ipv6;
3765
3766         if (!(xmit_type & (XMIT_GSO_ENC_V6 | XMIT_GSO_V6)))
3767                 return;
3768
3769         if (xmit_type & XMIT_GSO_ENC_V6)
3770                 ipv6 = inner_ipv6_hdr(skb);
3771         else /* XMIT_GSO_V6 */
3772                 ipv6 = ipv6_hdr(skb);
3773
3774         if (ipv6->nexthdr == NEXTHDR_IPV6)
3775                 *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
3776 }
3777
3778 /* called with netif_tx_lock
3779  * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
3780  * netif_wake_queue()
3781  */
3782 netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
3783 {
3784         struct bnx2x *bp = netdev_priv(dev);
3785
3786         struct netdev_queue *txq;
3787         struct bnx2x_fp_txdata *txdata;
3788         struct sw_tx_bd *tx_buf;
3789         struct eth_tx_start_bd *tx_start_bd, *first_bd;
3790         struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
3791         struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
3792         struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
3793         struct eth_tx_parse_2nd_bd *pbd2 = NULL;
3794         u32 pbd_e2_parsing_data = 0;
3795         u16 pkt_prod, bd_prod;
3796         int nbd, txq_index;
3797         dma_addr_t mapping;
3798         u32 xmit_type = bnx2x_xmit_type(bp, skb);
3799         int i;
3800         u8 hlen = 0;
3801         __le16 pkt_size = 0;
3802         struct ethhdr *eth;
3803         u8 mac_type = UNICAST_ADDRESS;
3804
3805 #ifdef BNX2X_STOP_ON_ERROR
3806         if (unlikely(bp->panic))
3807                 return NETDEV_TX_BUSY;
3808 #endif
3809
3810         txq_index = skb_get_queue_mapping(skb);
3811         txq = netdev_get_tx_queue(dev, txq_index);
3812
3813         BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + (CNIC_LOADED(bp) ? 1 : 0));
3814
3815         txdata = &bp->bnx2x_txq[txq_index];
3816
3817         /* enable this debug print to view the transmission queue being used
3818         DP(NETIF_MSG_TX_QUEUED, "indices: txq %d, fp %d, txdata %d\n",
3819            txq_index, fp_index, txdata_index); */
3820
3821         /* enable this debug print to view the transmission details
3822         DP(NETIF_MSG_TX_QUEUED,
3823            "transmitting packet cid %d fp index %d txdata_index %d tx_data ptr %p fp pointer %p\n",
3824            txdata->cid, fp_index, txdata_index, txdata, fp); */
3825
3826         if (unlikely(bnx2x_tx_avail(bp, txdata) <
3827                         skb_shinfo(skb)->nr_frags +
3828                         BDS_PER_TX_PKT +
3829                         NEXT_CNT_PER_TX_PKT(MAX_BDS_PER_TX_PKT))) {
3830                 /* Handle special storage cases separately */
3831                 if (txdata->tx_ring_size == 0) {
3832                         struct bnx2x_eth_q_stats *q_stats =
3833                                 bnx2x_fp_qstats(bp, txdata->parent_fp);
3834                         q_stats->driver_filtered_tx_pkt++;
3835                         dev_kfree_skb(skb);
3836                         return NETDEV_TX_OK;
3837                 }
3838                 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
3839                 netif_tx_stop_queue(txq);
3840                 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
3841
3842                 return NETDEV_TX_BUSY;
3843         }
3844
3845         DP(NETIF_MSG_TX_QUEUED,
3846            "queue[%d]: SKB: summed %x  protocol %x protocol(%x,%x) gso type %x  xmit_type %x len %d\n",
3847            txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
3848            ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type,
3849            skb->len);
3850
3851         eth = (struct ethhdr *)skb->data;
3852
3853         /* set flag according to packet type (UNICAST_ADDRESS is default)*/
3854         if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
3855                 if (is_broadcast_ether_addr(eth->h_dest))
3856                         mac_type = BROADCAST_ADDRESS;
3857                 else
3858                         mac_type = MULTICAST_ADDRESS;
3859         }
3860
3861 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - BDS_PER_TX_PKT)
3862         /* First, check if we need to linearize the skb (due to FW
3863            restrictions). No need to check fragmentation if page size > 8K
3864            (there will be no violation to FW restrictions) */
3865         if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
3866                 /* Statistics of linearization */
3867                 bp->lin_cnt++;
3868                 if (skb_linearize(skb) != 0) {
3869                         DP(NETIF_MSG_TX_QUEUED,
3870                            "SKB linearization failed - silently dropping this SKB\n");
3871                         dev_kfree_skb_any(skb);
3872                         return NETDEV_TX_OK;
3873                 }
3874         }
3875 #endif
3876         /* Map skb linear data for DMA */
3877         mapping = dma_map_single(&bp->pdev->dev, skb->data,
3878                                  skb_headlen(skb), DMA_TO_DEVICE);
3879         if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
3880                 DP(NETIF_MSG_TX_QUEUED,
3881                    "SKB mapping failed - silently dropping this SKB\n");
3882                 dev_kfree_skb_any(skb);
3883                 return NETDEV_TX_OK;
3884         }
3885         /*
3886         Please read carefully. First we use one BD which we mark as start,
3887         then we have a parsing info BD (used for TSO or xsum),
3888         and only then we have the rest of the TSO BDs.
3889         (don't forget to mark the last one as last,
3890         and to unmap only AFTER you write to the BD ...)
3891         And above all, all pdb sizes are in words - NOT DWORDS!
3892         */
3893
3894         /* get current pkt produced now - advance it just before sending packet
3895          * since mapping of pages may fail and cause packet to be dropped
3896          */
3897         pkt_prod = txdata->tx_pkt_prod;
3898         bd_prod = TX_BD(txdata->tx_bd_prod);
3899
3900         /* get a tx_buf and first BD
3901          * tx_start_bd may be changed during SPLIT,
3902          * but first_bd will always stay first
3903          */
3904         tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
3905         tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
3906         first_bd = tx_start_bd;
3907
3908         tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3909
3910         if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
3911                 if (!(bp->flags & TX_TIMESTAMPING_EN)) {
3912                         BNX2X_ERR("Tx timestamping was not enabled, this packet will not be timestamped\n");
3913                 } else if (bp->ptp_tx_skb) {
3914                         BNX2X_ERR("The device supports only a single outstanding packet to timestamp, this packet will not be timestamped\n");
3915                 } else {
3916                         skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
3917                         /* schedule check for Tx timestamp */
3918                         bp->ptp_tx_skb = skb_get(skb);
3919                         bp->ptp_tx_start = jiffies;
3920                         schedule_work(&bp->ptp_task);
3921                 }
3922         }
3923
3924         /* header nbd: indirectly zero other flags! */
3925         tx_start_bd->general_data = 1 << ETH_TX_START_BD_HDR_NBDS_SHIFT;
3926
3927         /* remember the first BD of the packet */
3928         tx_buf->first_bd = txdata->tx_bd_prod;
3929         tx_buf->skb = skb;
3930         tx_buf->flags = 0;
3931
3932         DP(NETIF_MSG_TX_QUEUED,
3933            "sending pkt %u @%p  next_idx %u  bd %u @%p\n",
3934            pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
3935
3936         if (skb_vlan_tag_present(skb)) {
3937                 tx_start_bd->vlan_or_ethertype =
3938                     cpu_to_le16(skb_vlan_tag_get(skb));
3939                 tx_start_bd->bd_flags.as_bitfield |=
3940                     (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
3941         } else {
3942                 /* when transmitting in a vf, start bd must hold the ethertype
3943                  * for fw to enforce it
3944                  */
3945 #ifndef BNX2X_STOP_ON_ERROR
3946                 if (IS_VF(bp))
3947 #endif
3948                         tx_start_bd->vlan_or_ethertype =
3949                                 cpu_to_le16(ntohs(eth->h_proto));
3950 #ifndef BNX2X_STOP_ON_ERROR
3951                 else
3952                         /* used by FW for packet accounting */
3953                         tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
3954 #endif
3955         }
3956
3957         nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
3958
3959         /* turn on parsing and get a BD */
3960         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3961
3962         if (xmit_type & XMIT_CSUM)
3963                 bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
3964
3965         if (!CHIP_IS_E1x(bp)) {
3966                 pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
3967                 memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
3968
3969                 if (xmit_type & XMIT_CSUM_ENC) {
3970                         u16 global_data = 0;
3971
3972                         /* Set PBD in enc checksum offload case */
3973                         hlen = bnx2x_set_pbd_csum_enc(bp, skb,
3974                                                       &pbd_e2_parsing_data,
3975                                                       xmit_type);
3976
3977                         /* turn on 2nd parsing and get a BD */
3978                         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3979
3980                         pbd2 = &txdata->tx_desc_ring[bd_prod].parse_2nd_bd;
3981
3982                         memset(pbd2, 0, sizeof(*pbd2));
3983
3984                         pbd_e2->data.tunnel_data.ip_hdr_start_inner_w =
3985                                 (skb_inner_network_header(skb) -
3986                                  skb->data) >> 1;
3987
3988                         if (xmit_type & XMIT_GSO_ENC)
3989                                 bnx2x_update_pbds_gso_enc(skb, pbd_e2, pbd2,
3990                                                           &global_data,
3991                                                           xmit_type);
3992
3993                         pbd2->global_data = cpu_to_le16(global_data);
3994
3995                         /* add addition parse BD indication to start BD */
3996                         SET_FLAG(tx_start_bd->general_data,
3997                                  ETH_TX_START_BD_PARSE_NBDS, 1);
3998                         /* set encapsulation flag in start BD */
3999                         SET_FLAG(tx_start_bd->general_data,
4000                                  ETH_TX_START_BD_TUNNEL_EXIST, 1);
4001
4002                         tx_buf->flags |= BNX2X_HAS_SECOND_PBD;
4003
4004                         nbd++;
4005                 } else if (xmit_type & XMIT_CSUM) {
4006                         /* Set PBD in checksum offload case w/o encapsulation */
4007                         hlen = bnx2x_set_pbd_csum_e2(bp, skb,
4008                                                      &pbd_e2_parsing_data,
4009                                                      xmit_type);
4010                 }
4011
4012                 bnx2x_set_ipv6_ext_e2(skb, &pbd_e2_parsing_data, xmit_type);
4013                 /* Add the macs to the parsing BD if this is a vf or if
4014                  * Tx Switching is enabled.
4015                  */
4016                 if (IS_VF(bp)) {
4017                         /* override GRE parameters in BD */
4018                         bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
4019                                               &pbd_e2->data.mac_addr.src_mid,
4020                                               &pbd_e2->data.mac_addr.src_lo,
4021                                               eth->h_source);
4022
4023                         bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.dst_hi,
4024                                               &pbd_e2->data.mac_addr.dst_mid,
4025                                               &pbd_e2->data.mac_addr.dst_lo,
4026                                               eth->h_dest);
4027                 } else {
4028                         if (bp->flags & TX_SWITCHING)
4029                                 bnx2x_set_fw_mac_addr(
4030                                                 &pbd_e2->data.mac_addr.dst_hi,
4031                                                 &pbd_e2->data.mac_addr.dst_mid,
4032                                                 &pbd_e2->data.mac_addr.dst_lo,
4033                                                 eth->h_dest);
4034 #ifdef BNX2X_STOP_ON_ERROR
4035                         /* Enforce security is always set in Stop on Error -
4036                          * source mac should be present in the parsing BD
4037                          */
4038                         bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
4039                                               &pbd_e2->data.mac_addr.src_mid,
4040                                               &pbd_e2->data.mac_addr.src_lo,
4041                                               eth->h_source);
4042 #endif
4043                 }
4044
4045                 SET_FLAG(pbd_e2_parsing_data,
4046                          ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE, mac_type);
4047         } else {
4048                 u16 global_data = 0;
4049                 pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
4050                 memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
4051                 /* Set PBD in checksum offload case */
4052                 if (xmit_type & XMIT_CSUM)
4053                         hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
4054
4055                 SET_FLAG(global_data,
4056                          ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE, mac_type);
4057                 pbd_e1x->global_data |= cpu_to_le16(global_data);
4058         }
4059
4060         /* Setup the data pointer of the first BD of the packet */
4061         tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4062         tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4063         tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
4064         pkt_size = tx_start_bd->nbytes;
4065
4066         DP(NETIF_MSG_TX_QUEUED,
4067            "first bd @%p  addr (%x:%x)  nbytes %d  flags %x  vlan %x\n",
4068            tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
4069            le16_to_cpu(tx_start_bd->nbytes),
4070            tx_start_bd->bd_flags.as_bitfield,
4071            le16_to_cpu(tx_start_bd->vlan_or_ethertype));
4072
4073         if (xmit_type & XMIT_GSO) {
4074
4075                 DP(NETIF_MSG_TX_QUEUED,
4076                    "TSO packet len %d  hlen %d  total len %d  tso size %d\n",
4077                    skb->len, hlen, skb_headlen(skb),
4078                    skb_shinfo(skb)->gso_size);
4079
4080                 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
4081
4082                 if (unlikely(skb_headlen(skb) > hlen)) {
4083                         nbd++;
4084                         bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
4085                                                  &tx_start_bd, hlen,
4086                                                  bd_prod);
4087                 }
4088                 if (!CHIP_IS_E1x(bp))
4089                         pbd_e2_parsing_data |=
4090                                 (skb_shinfo(skb)->gso_size <<
4091                                  ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
4092                                  ETH_TX_PARSE_BD_E2_LSO_MSS;
4093                 else
4094                         bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
4095         }
4096
4097         /* Set the PBD's parsing_data field if not zero
4098          * (for the chips newer than 57711).
4099          */
4100         if (pbd_e2_parsing_data)
4101                 pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
4102
4103         tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
4104
4105         /* Handle fragmented skb */
4106         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4107                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4108
4109                 mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
4110                                            skb_frag_size(frag), DMA_TO_DEVICE);
4111                 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
4112                         unsigned int pkts_compl = 0, bytes_compl = 0;
4113
4114                         DP(NETIF_MSG_TX_QUEUED,
4115                            "Unable to map page - dropping packet...\n");
4116
4117                         /* we need unmap all buffers already mapped
4118                          * for this SKB;
4119                          * first_bd->nbd need to be properly updated
4120                          * before call to bnx2x_free_tx_pkt
4121                          */
4122                         first_bd->nbd = cpu_to_le16(nbd);
4123                         bnx2x_free_tx_pkt(bp, txdata,
4124                                           TX_BD(txdata->tx_pkt_prod),
4125                                           &pkts_compl, &bytes_compl);
4126                         return NETDEV_TX_OK;
4127                 }
4128
4129                 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4130                 tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4131                 if (total_pkt_bd == NULL)
4132                         total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4133
4134                 tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4135                 tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4136                 tx_data_bd->nbytes = cpu_to_le16(skb_frag_size(frag));
4137                 le16_add_cpu(&pkt_size, skb_frag_size(frag));
4138                 nbd++;
4139
4140                 DP(NETIF_MSG_TX_QUEUED,
4141                    "frag %d  bd @%p  addr (%x:%x)  nbytes %d\n",
4142                    i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
4143                    le16_to_cpu(tx_data_bd->nbytes));
4144         }
4145
4146         DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
4147
4148         /* update with actual num BDs */
4149         first_bd->nbd = cpu_to_le16(nbd);
4150
4151         bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4152
4153         /* now send a tx doorbell, counting the next BD
4154          * if the packet contains or ends with it
4155          */
4156         if (TX_BD_POFF(bd_prod) < nbd)
4157                 nbd++;
4158
4159         /* total_pkt_bytes should be set on the first data BD if
4160          * it's not an LSO packet and there is more than one
4161          * data BD. In this case pkt_size is limited by an MTU value.
4162          * However we prefer to set it for an LSO packet (while we don't
4163          * have to) in order to save some CPU cycles in a none-LSO
4164          * case, when we much more care about them.
4165          */
4166         if (total_pkt_bd != NULL)
4167                 total_pkt_bd->total_pkt_bytes = pkt_size;
4168
4169         if (pbd_e1x)
4170                 DP(NETIF_MSG_TX_QUEUED,
4171                    "PBD (E1X) @%p  ip_data %x  ip_hlen %u  ip_id %u  lso_mss %u  tcp_flags %x  xsum %x  seq %u  hlen %u\n",
4172                    pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
4173                    pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
4174                    pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
4175                     le16_to_cpu(pbd_e1x->total_hlen_w));
4176         if (pbd_e2)
4177                 DP(NETIF_MSG_TX_QUEUED,
4178                    "PBD (E2) @%p  dst %x %x %x src %x %x %x parsing_data %x\n",
4179                    pbd_e2,
4180                    pbd_e2->data.mac_addr.dst_hi,
4181                    pbd_e2->data.mac_addr.dst_mid,
4182                    pbd_e2->data.mac_addr.dst_lo,
4183                    pbd_e2->data.mac_addr.src_hi,
4184                    pbd_e2->data.mac_addr.src_mid,
4185                    pbd_e2->data.mac_addr.src_lo,
4186                    pbd_e2->parsing_data);
4187         DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d  bd %u\n", nbd, bd_prod);
4188
4189         netdev_tx_sent_queue(txq, skb->len);
4190
4191         skb_tx_timestamp(skb);
4192
4193         txdata->tx_pkt_prod++;
4194         /*
4195          * Make sure that the BD data is updated before updating the producer
4196          * since FW might read the BD right after the producer is updated.
4197          * This is only applicable for weak-ordered memory model archs such
4198          * as IA-64. The following barrier is also mandatory since FW will
4199          * assumes packets must have BDs.
4200          */
4201         wmb();
4202
4203         txdata->tx_db.data.prod += nbd;
4204         barrier();
4205
4206         DOORBELL(bp, txdata->cid, txdata->tx_db.raw);
4207
4208         mmiowb();
4209
4210         txdata->tx_bd_prod += nbd;
4211
4212         if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_DESC_PER_TX_PKT)) {
4213                 netif_tx_stop_queue(txq);
4214
4215                 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
4216                  * ordering of set_bit() in netif_tx_stop_queue() and read of
4217                  * fp->bd_tx_cons */
4218                 smp_mb();
4219
4220                 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
4221                 if (bnx2x_tx_avail(bp, txdata) >= MAX_DESC_PER_TX_PKT)
4222                         netif_tx_wake_queue(txq);
4223         }
4224         txdata->tx_pkt++;
4225
4226         return NETDEV_TX_OK;
4227 }
4228
4229 void bnx2x_get_c2s_mapping(struct bnx2x *bp, u8 *c2s_map, u8 *c2s_default)
4230 {
4231         int mfw_vn = BP_FW_MB_IDX(bp);
4232         u32 tmp;
4233
4234         /* If the shmem shouldn't affect configuration, reflect */
4235         if (!IS_MF_BD(bp)) {
4236                 int i;
4237
4238                 for (i = 0; i < BNX2X_MAX_PRIORITY; i++)
4239                         c2s_map[i] = i;
4240                 *c2s_default = 0;
4241
4242                 return;
4243         }
4244
4245         tmp = SHMEM2_RD(bp, c2s_pcp_map_lower[mfw_vn]);
4246         tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4247         c2s_map[0] = tmp & 0xff;
4248         c2s_map[1] = (tmp >> 8) & 0xff;
4249         c2s_map[2] = (tmp >> 16) & 0xff;
4250         c2s_map[3] = (tmp >> 24) & 0xff;
4251
4252         tmp = SHMEM2_RD(bp, c2s_pcp_map_upper[mfw_vn]);
4253         tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4254         c2s_map[4] = tmp & 0xff;
4255         c2s_map[5] = (tmp >> 8) & 0xff;
4256         c2s_map[6] = (tmp >> 16) & 0xff;
4257         c2s_map[7] = (tmp >> 24) & 0xff;
4258
4259         tmp = SHMEM2_RD(bp, c2s_pcp_map_default[mfw_vn]);
4260         tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4261         *c2s_default = (tmp >> (8 * mfw_vn)) & 0xff;
4262 }
4263
4264 /**
4265  * bnx2x_setup_tc - routine to configure net_device for multi tc
4266  *
4267  * @netdev: net device to configure
4268  * @tc: number of traffic classes to enable
4269  *
4270  * callback connected to the ndo_setup_tc function pointer
4271  */
4272 int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
4273 {
4274         struct bnx2x *bp = netdev_priv(dev);
4275         u8 c2s_map[BNX2X_MAX_PRIORITY], c2s_def;
4276         int cos, prio, count, offset;
4277
4278         /* setup tc must be called under rtnl lock */
4279         ASSERT_RTNL();
4280
4281         /* no traffic classes requested. Aborting */
4282         if (!num_tc) {
4283                 netdev_reset_tc(dev);
4284                 return 0;
4285         }
4286
4287         /* requested to support too many traffic classes */
4288         if (num_tc > bp->max_cos) {
4289                 BNX2X_ERR("support for too many traffic classes requested: %d. Max supported is %d\n",
4290                           num_tc, bp->max_cos);
4291                 return -EINVAL;
4292         }
4293
4294         /* declare amount of supported traffic classes */
4295         if (netdev_set_num_tc(dev, num_tc)) {
4296                 BNX2X_ERR("failed to declare %d traffic classes\n", num_tc);
4297                 return -EINVAL;
4298         }
4299
4300         bnx2x_get_c2s_mapping(bp, c2s_map, &c2s_def);
4301
4302         /* configure priority to traffic class mapping */
4303         for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
4304                 int outer_prio = c2s_map[prio];
4305
4306                 netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[outer_prio]);
4307                 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4308                    "mapping priority %d to tc %d\n",
4309                    outer_prio, bp->prio_to_cos[outer_prio]);
4310         }
4311
4312         /* Use this configuration to differentiate tc0 from other COSes
4313            This can be used for ets or pfc, and save the effort of setting
4314            up a multio class queue disc or negotiating DCBX with a switch
4315         netdev_set_prio_tc_map(dev, 0, 0);
4316         DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
4317         for (prio = 1; prio < 16; prio++) {
4318                 netdev_set_prio_tc_map(dev, prio, 1);
4319                 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
4320         } */
4321
4322         /* configure traffic class to transmission queue mapping */
4323         for (cos = 0; cos < bp->max_cos; cos++) {
4324                 count = BNX2X_NUM_ETH_QUEUES(bp);
4325                 offset = cos * BNX2X_NUM_NON_CNIC_QUEUES(bp);
4326                 netdev_set_tc_queue(dev, cos, count, offset);
4327                 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4328                    "mapping tc %d to offset %d count %d\n",
4329                    cos, offset, count);
4330         }
4331
4332         return 0;
4333 }
4334
4335 /* called with rtnl_lock */
4336 int bnx2x_change_mac_addr(struct net_device *dev, void *p)
4337 {
4338         struct sockaddr *addr = p;
4339         struct bnx2x *bp = netdev_priv(dev);
4340         int rc = 0;
4341
4342         if (!is_valid_ether_addr(addr->sa_data)) {
4343                 BNX2X_ERR("Requested MAC address is not valid\n");
4344                 return -EINVAL;
4345         }
4346
4347         if (IS_MF_STORAGE_ONLY(bp)) {
4348                 BNX2X_ERR("Can't change address on STORAGE ONLY function\n");
4349                 return -EINVAL;
4350         }
4351
4352         if (netif_running(dev))  {
4353                 rc = bnx2x_set_eth_mac(bp, false);
4354                 if (rc)
4355                         return rc;
4356         }
4357
4358         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4359
4360         if (netif_running(dev))
4361                 rc = bnx2x_set_eth_mac(bp, true);
4362
4363         if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4364                 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4365
4366         return rc;
4367 }
4368
4369 static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
4370 {
4371         union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
4372         struct bnx2x_fastpath *fp = &bp->fp[fp_index];
4373         u8 cos;
4374
4375         /* Common */
4376
4377         if (IS_FCOE_IDX(fp_index)) {
4378                 memset(sb, 0, sizeof(union host_hc_status_block));
4379                 fp->status_blk_mapping = 0;
4380         } else {
4381                 /* status blocks */
4382                 if (!CHIP_IS_E1x(bp))
4383                         BNX2X_PCI_FREE(sb->e2_sb,
4384                                        bnx2x_fp(bp, fp_index,
4385                                                 status_blk_mapping),
4386                                        sizeof(struct host_hc_status_block_e2));
4387                 else
4388                         BNX2X_PCI_FREE(sb->e1x_sb,
4389                                        bnx2x_fp(bp, fp_index,
4390                                                 status_blk_mapping),
4391                                        sizeof(struct host_hc_status_block_e1x));
4392         }
4393
4394         /* Rx */
4395         if (!skip_rx_queue(bp, fp_index)) {
4396                 bnx2x_free_rx_bds(fp);
4397
4398                 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4399                 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
4400                 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
4401                                bnx2x_fp(bp, fp_index, rx_desc_mapping),
4402                                sizeof(struct eth_rx_bd) * NUM_RX_BD);
4403
4404                 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
4405                                bnx2x_fp(bp, fp_index, rx_comp_mapping),
4406                                sizeof(struct eth_fast_path_rx_cqe) *
4407                                NUM_RCQ_BD);
4408
4409                 /* SGE ring */
4410                 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
4411                 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
4412                                bnx2x_fp(bp, fp_index, rx_sge_mapping),
4413                                BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4414         }
4415
4416         /* Tx */
4417         if (!skip_tx_queue(bp, fp_index)) {
4418                 /* fastpath tx rings: tx_buf tx_desc */
4419                 for_each_cos_in_tx_queue(fp, cos) {
4420                         struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4421
4422                         DP(NETIF_MSG_IFDOWN,
4423                            "freeing tx memory of fp %d cos %d cid %d\n",
4424                            fp_index, cos, txdata->cid);
4425
4426                         BNX2X_FREE(txdata->tx_buf_ring);
4427                         BNX2X_PCI_FREE(txdata->tx_desc_ring,
4428                                 txdata->tx_desc_mapping,
4429                                 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4430                 }
4431         }
4432         /* end of fastpath */
4433 }
4434
4435 static void bnx2x_free_fp_mem_cnic(struct bnx2x *bp)
4436 {
4437         int i;
4438         for_each_cnic_queue(bp, i)
4439                 bnx2x_free_fp_mem_at(bp, i);
4440 }
4441
4442 void bnx2x_free_fp_mem(struct bnx2x *bp)
4443 {
4444         int i;
4445         for_each_eth_queue(bp, i)
4446                 bnx2x_free_fp_mem_at(bp, i);
4447 }
4448
4449 static void set_sb_shortcuts(struct bnx2x *bp, int index)
4450 {
4451         union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
4452         if (!CHIP_IS_E1x(bp)) {
4453                 bnx2x_fp(bp, index, sb_index_values) =
4454                         (__le16 *)status_blk.e2_sb->sb.index_values;
4455                 bnx2x_fp(bp, index, sb_running_index) =
4456                         (__le16 *)status_blk.e2_sb->sb.running_index;
4457         } else {
4458                 bnx2x_fp(bp, index, sb_index_values) =
4459                         (__le16 *)status_blk.e1x_sb->sb.index_values;
4460                 bnx2x_fp(bp, index, sb_running_index) =
4461                         (__le16 *)status_blk.e1x_sb->sb.running_index;
4462         }
4463 }
4464
4465 /* Returns the number of actually allocated BDs */
4466 static int bnx2x_alloc_rx_bds(struct bnx2x_fastpath *fp,
4467                               int rx_ring_size)
4468 {
4469         struct bnx2x *bp = fp->bp;
4470         u16 ring_prod, cqe_ring_prod;
4471         int i, failure_cnt = 0;
4472
4473         fp->rx_comp_cons = 0;
4474         cqe_ring_prod = ring_prod = 0;
4475
4476         /* This routine is called only during fo init so
4477          * fp->eth_q_stats.rx_skb_alloc_failed = 0
4478          */
4479         for (i = 0; i < rx_ring_size; i++) {
4480                 if (bnx2x_alloc_rx_data(bp, fp, ring_prod, GFP_KERNEL) < 0) {
4481                         failure_cnt++;
4482                         continue;
4483                 }
4484                 ring_prod = NEXT_RX_IDX(ring_prod);
4485                 cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod);
4486                 WARN_ON(ring_prod <= (i - failure_cnt));
4487         }
4488
4489         if (failure_cnt)
4490                 BNX2X_ERR("was only able to allocate %d rx skbs on queue[%d]\n",
4491                           i - failure_cnt, fp->index);
4492
4493         fp->rx_bd_prod = ring_prod;
4494         /* Limit the CQE producer by the CQE ring size */
4495         fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT,
4496                                cqe_ring_prod);
4497         fp->rx_pkt = fp->rx_calls = 0;
4498
4499         bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed += failure_cnt;
4500
4501         return i - failure_cnt;
4502 }
4503
4504 static void bnx2x_set_next_page_rx_cq(struct bnx2x_fastpath *fp)
4505 {
4506         int i;
4507
4508         for (i = 1; i <= NUM_RCQ_RINGS; i++) {
4509                 struct eth_rx_cqe_next_page *nextpg;
4510
4511                 nextpg = (struct eth_rx_cqe_next_page *)
4512                         &fp->rx_comp_ring[RCQ_DESC_CNT * i - 1];
4513                 nextpg->addr_hi =
4514                         cpu_to_le32(U64_HI(fp->rx_comp_mapping +
4515                                    BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4516                 nextpg->addr_lo =
4517                         cpu_to_le32(U64_LO(fp->rx_comp_mapping +
4518                                    BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4519         }
4520 }
4521
4522 static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
4523 {
4524         union host_hc_status_block *sb;
4525         struct bnx2x_fastpath *fp = &bp->fp[index];
4526         int ring_size = 0;
4527         u8 cos;
4528         int rx_ring_size = 0;
4529
4530         if (!bp->rx_ring_size && IS_MF_STORAGE_ONLY(bp)) {
4531                 rx_ring_size = MIN_RX_SIZE_NONTPA;
4532                 bp->rx_ring_size = rx_ring_size;
4533         } else if (!bp->rx_ring_size) {
4534                 rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
4535
4536                 if (CHIP_IS_E3(bp)) {
4537                         u32 cfg = SHMEM_RD(bp,
4538                                            dev_info.port_hw_config[BP_PORT(bp)].
4539                                            default_cfg);
4540
4541                         /* Decrease ring size for 1G functions */
4542                         if ((cfg & PORT_HW_CFG_NET_SERDES_IF_MASK) ==
4543                             PORT_HW_CFG_NET_SERDES_IF_SGMII)
4544                                 rx_ring_size /= 10;
4545                 }
4546
4547                 /* allocate at least number of buffers required by FW */
4548                 rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
4549                                      MIN_RX_SIZE_TPA, rx_ring_size);
4550
4551                 bp->rx_ring_size = rx_ring_size;
4552         } else /* if rx_ring_size specified - use it */
4553                 rx_ring_size = bp->rx_ring_size;
4554
4555         DP(BNX2X_MSG_SP, "calculated rx_ring_size %d\n", rx_ring_size);
4556
4557         /* Common */
4558         sb = &bnx2x_fp(bp, index, status_blk);
4559
4560         if (!IS_FCOE_IDX(index)) {
4561                 /* status blocks */
4562                 if (!CHIP_IS_E1x(bp)) {
4563                         sb->e2_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4564                                                     sizeof(struct host_hc_status_block_e2));
4565                         if (!sb->e2_sb)
4566                                 goto alloc_mem_err;
4567                 } else {
4568                         sb->e1x_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4569                                                      sizeof(struct host_hc_status_block_e1x));
4570                         if (!sb->e1x_sb)
4571                                 goto alloc_mem_err;
4572                 }
4573         }
4574
4575         /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
4576          * set shortcuts for it.
4577          */
4578         if (!IS_FCOE_IDX(index))
4579                 set_sb_shortcuts(bp, index);
4580
4581         /* Tx */
4582         if (!skip_tx_queue(bp, index)) {
4583                 /* fastpath tx rings: tx_buf tx_desc */
4584                 for_each_cos_in_tx_queue(fp, cos) {
4585                         struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4586
4587                         DP(NETIF_MSG_IFUP,
4588                            "allocating tx memory of fp %d cos %d\n",
4589                            index, cos);
4590
4591                         txdata->tx_buf_ring = kcalloc(NUM_TX_BD,
4592                                                       sizeof(struct sw_tx_bd),
4593                                                       GFP_KERNEL);
4594                         if (!txdata->tx_buf_ring)
4595                                 goto alloc_mem_err;
4596                         txdata->tx_desc_ring = BNX2X_PCI_ALLOC(&txdata->tx_desc_mapping,
4597                                                                sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4598                         if (!txdata->tx_desc_ring)
4599                                 goto alloc_mem_err;
4600                 }
4601         }
4602
4603         /* Rx */
4604         if (!skip_rx_queue(bp, index)) {
4605                 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4606                 bnx2x_fp(bp, index, rx_buf_ring) =
4607                         kcalloc(NUM_RX_BD, sizeof(struct sw_rx_bd), GFP_KERNEL);
4608                 if (!bnx2x_fp(bp, index, rx_buf_ring))
4609                         goto alloc_mem_err;
4610                 bnx2x_fp(bp, index, rx_desc_ring) =
4611                         BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_desc_mapping),
4612                                         sizeof(struct eth_rx_bd) * NUM_RX_BD);
4613                 if (!bnx2x_fp(bp, index, rx_desc_ring))
4614                         goto alloc_mem_err;
4615
4616                 /* Seed all CQEs by 1s */
4617                 bnx2x_fp(bp, index, rx_comp_ring) =
4618                         BNX2X_PCI_FALLOC(&bnx2x_fp(bp, index, rx_comp_mapping),
4619                                          sizeof(struct eth_fast_path_rx_cqe) * NUM_RCQ_BD);
4620                 if (!bnx2x_fp(bp, index, rx_comp_ring))
4621                         goto alloc_mem_err;
4622
4623                 /* SGE ring */
4624                 bnx2x_fp(bp, index, rx_page_ring) =
4625                         kcalloc(NUM_RX_SGE, sizeof(struct sw_rx_page),
4626                                 GFP_KERNEL);
4627                 if (!bnx2x_fp(bp, index, rx_page_ring))
4628                         goto alloc_mem_err;
4629                 bnx2x_fp(bp, index, rx_sge_ring) =
4630                         BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_sge_mapping),
4631                                         BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4632                 if (!bnx2x_fp(bp, index, rx_sge_ring))
4633                         goto alloc_mem_err;
4634                 /* RX BD ring */
4635                 bnx2x_set_next_page_rx_bd(fp);
4636
4637                 /* CQ ring */
4638                 bnx2x_set_next_page_rx_cq(fp);
4639
4640                 /* BDs */
4641                 ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
4642                 if (ring_size < rx_ring_size)
4643                         goto alloc_mem_err;
4644         }
4645
4646         return 0;
4647
4648 /* handles low memory cases */
4649 alloc_mem_err:
4650         BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
4651                                                 index, ring_size);
4652         /* FW will drop all packets if queue is not big enough,
4653          * In these cases we disable the queue
4654          * Min size is different for OOO, TPA and non-TPA queues
4655          */
4656         if (ring_size < (fp->mode == TPA_MODE_DISABLED ?
4657                                 MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
4658                         /* release memory allocated for this queue */
4659                         bnx2x_free_fp_mem_at(bp, index);
4660                         return -ENOMEM;
4661         }
4662         return 0;
4663 }
4664
4665 static int bnx2x_alloc_fp_mem_cnic(struct bnx2x *bp)
4666 {
4667         if (!NO_FCOE(bp))
4668                 /* FCoE */
4669                 if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX(bp)))
4670                         /* we will fail load process instead of mark
4671                          * NO_FCOE_FLAG
4672                          */
4673                         return -ENOMEM;
4674
4675         return 0;
4676 }
4677
4678 static int bnx2x_alloc_fp_mem(struct bnx2x *bp)
4679 {
4680         int i;
4681
4682         /* 1. Allocate FP for leading - fatal if error
4683          * 2. Allocate RSS - fix number of queues if error
4684          */
4685
4686         /* leading */
4687         if (bnx2x_alloc_fp_mem_at(bp, 0))
4688                 return -ENOMEM;
4689
4690         /* RSS */
4691         for_each_nondefault_eth_queue(bp, i)
4692                 if (bnx2x_alloc_fp_mem_at(bp, i))
4693                         break;
4694
4695         /* handle memory failures */
4696         if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
4697                 int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
4698
4699                 WARN_ON(delta < 0);
4700                 bnx2x_shrink_eth_fp(bp, delta);
4701                 if (CNIC_SUPPORT(bp))
4702                         /* move non eth FPs next to last eth FP
4703                          * must be done in that order
4704                          * FCOE_IDX < FWD_IDX < OOO_IDX
4705                          */
4706
4707                         /* move FCoE fp even NO_FCOE_FLAG is on */
4708                         bnx2x_move_fp(bp, FCOE_IDX(bp), FCOE_IDX(bp) - delta);
4709                 bp->num_ethernet_queues -= delta;
4710                 bp->num_queues = bp->num_ethernet_queues +
4711                                  bp->num_cnic_queues;
4712                 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
4713                           bp->num_queues + delta, bp->num_queues);
4714         }
4715
4716         return 0;
4717 }
4718
4719 void bnx2x_free_mem_bp(struct bnx2x *bp)
4720 {
4721         int i;
4722
4723         for (i = 0; i < bp->fp_array_size; i++)
4724                 kfree(bp->fp[i].tpa_info);
4725         kfree(bp->fp);
4726         kfree(bp->sp_objs);
4727         kfree(bp->fp_stats);
4728         kfree(bp->bnx2x_txq);
4729         kfree(bp->msix_table);
4730         kfree(bp->ilt);
4731 }
4732
4733 int bnx2x_alloc_mem_bp(struct bnx2x *bp)
4734 {
4735         struct bnx2x_fastpath *fp;
4736         struct msix_entry *tbl;
4737         struct bnx2x_ilt *ilt;
4738         int msix_table_size = 0;
4739         int fp_array_size, txq_array_size;
4740         int i;
4741
4742         /*
4743          * The biggest MSI-X table we might need is as a maximum number of fast
4744          * path IGU SBs plus default SB (for PF only).
4745          */
4746         msix_table_size = bp->igu_sb_cnt;
4747         if (IS_PF(bp))
4748                 msix_table_size++;
4749         BNX2X_DEV_INFO("msix_table_size %d\n", msix_table_size);
4750
4751         /* fp array: RSS plus CNIC related L2 queues */
4752         fp_array_size = BNX2X_MAX_RSS_COUNT(bp) + CNIC_SUPPORT(bp);
4753         bp->fp_array_size = fp_array_size;
4754         BNX2X_DEV_INFO("fp_array_size %d\n", bp->fp_array_size);
4755
4756         fp = kcalloc(bp->fp_array_size, sizeof(*fp), GFP_KERNEL);
4757         if (!fp)
4758                 goto alloc_err;
4759         for (i = 0; i < bp->fp_array_size; i++) {
4760                 fp[i].tpa_info =
4761                         kcalloc(ETH_MAX_AGGREGATION_QUEUES_E1H_E2,
4762                                 sizeof(struct bnx2x_agg_info), GFP_KERNEL);
4763                 if (!(fp[i].tpa_info))
4764                         goto alloc_err;
4765         }
4766
4767         bp->fp = fp;
4768
4769         /* allocate sp objs */
4770         bp->sp_objs = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_sp_objs),
4771                               GFP_KERNEL);
4772         if (!bp->sp_objs)
4773                 goto alloc_err;
4774
4775         /* allocate fp_stats */
4776         bp->fp_stats = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_fp_stats),
4777                                GFP_KERNEL);
4778         if (!bp->fp_stats)
4779                 goto alloc_err;
4780
4781         /* Allocate memory for the transmission queues array */
4782         txq_array_size =
4783                 BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS + CNIC_SUPPORT(bp);
4784         BNX2X_DEV_INFO("txq_array_size %d", txq_array_size);
4785
4786         bp->bnx2x_txq = kcalloc(txq_array_size, sizeof(struct bnx2x_fp_txdata),
4787                                 GFP_KERNEL);
4788         if (!bp->bnx2x_txq)
4789                 goto alloc_err;
4790
4791         /* msix table */
4792         tbl = kcalloc(msix_table_size, sizeof(*tbl), GFP_KERNEL);
4793         if (!tbl)
4794                 goto alloc_err;
4795         bp->msix_table = tbl;
4796
4797         /* ilt */
4798         ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
4799         if (!ilt)
4800                 goto alloc_err;
4801         bp->ilt = ilt;
4802
4803         return 0;
4804 alloc_err:
4805         bnx2x_free_mem_bp(bp);
4806         return -ENOMEM;
4807 }
4808
4809 int bnx2x_reload_if_running(struct net_device *dev)
4810 {
4811         struct bnx2x *bp = netdev_priv(dev);
4812
4813         if (unlikely(!netif_running(dev)))
4814                 return 0;
4815
4816         bnx2x_nic_unload(bp, UNLOAD_NORMAL, true);
4817         return bnx2x_nic_load(bp, LOAD_NORMAL);
4818 }
4819
4820 int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
4821 {
4822         u32 sel_phy_idx = 0;
4823         if (bp->link_params.num_phys <= 1)
4824                 return INT_PHY;
4825
4826         if (bp->link_vars.link_up) {
4827                 sel_phy_idx = EXT_PHY1;
4828                 /* In case link is SERDES, check if the EXT_PHY2 is the one */
4829                 if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
4830                     (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
4831                         sel_phy_idx = EXT_PHY2;
4832         } else {
4833
4834                 switch (bnx2x_phy_selection(&bp->link_params)) {
4835                 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
4836                 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
4837                 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
4838                        sel_phy_idx = EXT_PHY1;
4839                        break;
4840                 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
4841                 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
4842                        sel_phy_idx = EXT_PHY2;
4843                        break;
4844                 }
4845         }
4846
4847         return sel_phy_idx;
4848 }
4849 int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
4850 {
4851         u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
4852         /*
4853          * The selected activated PHY is always after swapping (in case PHY
4854          * swapping is enabled). So when swapping is enabled, we need to reverse
4855          * the configuration
4856          */
4857
4858         if (bp->link_params.multi_phy_config &
4859             PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
4860                 if (sel_phy_idx == EXT_PHY1)
4861                         sel_phy_idx = EXT_PHY2;
4862                 else if (sel_phy_idx == EXT_PHY2)
4863                         sel_phy_idx = EXT_PHY1;
4864         }
4865         return LINK_CONFIG_IDX(sel_phy_idx);
4866 }
4867
4868 #ifdef NETDEV_FCOE_WWNN
4869 int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
4870 {
4871         struct bnx2x *bp = netdev_priv(dev);
4872         struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
4873
4874         switch (type) {
4875         case NETDEV_FCOE_WWNN:
4876                 *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
4877                                 cp->fcoe_wwn_node_name_lo);
4878                 break;
4879         case NETDEV_FCOE_WWPN:
4880                 *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
4881                                 cp->fcoe_wwn_port_name_lo);
4882                 break;
4883         default:
4884                 BNX2X_ERR("Wrong WWN type requested - %d\n", type);
4885                 return -EINVAL;
4886         }
4887
4888         return 0;
4889 }
4890 #endif
4891
4892 /* called with rtnl_lock */
4893 int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
4894 {
4895         struct bnx2x *bp = netdev_priv(dev);
4896
4897         if (pci_num_vf(bp->pdev)) {
4898                 DP(BNX2X_MSG_IOV, "VFs are enabled, can not change MTU\n");
4899                 return -EPERM;
4900         }
4901
4902         if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
4903                 BNX2X_ERR("Can't perform change MTU during parity recovery\n");
4904                 return -EAGAIN;
4905         }
4906
4907         if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
4908             ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) {
4909                 BNX2X_ERR("Can't support requested MTU size\n");
4910                 return -EINVAL;
4911         }
4912
4913         /* This does not race with packet allocation
4914          * because the actual alloc size is
4915          * only updated as part of load
4916          */
4917         dev->mtu = new_mtu;
4918
4919         if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4920                 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4921
4922         return bnx2x_reload_if_running(dev);
4923 }
4924
4925 netdev_features_t bnx2x_fix_features(struct net_device *dev,
4926                                      netdev_features_t features)
4927 {
4928         struct bnx2x *bp = netdev_priv(dev);
4929
4930         if (pci_num_vf(bp->pdev)) {
4931                 netdev_features_t changed = dev->features ^ features;
4932
4933                 /* Revert the requested changes in features if they
4934                  * would require internal reload of PF in bnx2x_set_features().
4935                  */
4936                 if (!(features & NETIF_F_RXCSUM) && !bp->disable_tpa) {
4937                         features &= ~NETIF_F_RXCSUM;
4938                         features |= dev->features & NETIF_F_RXCSUM;
4939                 }
4940
4941                 if (changed & NETIF_F_LOOPBACK) {
4942                         features &= ~NETIF_F_LOOPBACK;
4943                         features |= dev->features & NETIF_F_LOOPBACK;
4944                 }
4945         }
4946
4947         /* TPA requires Rx CSUM offloading */
4948         if (!(features & NETIF_F_RXCSUM)) {
4949                 features &= ~NETIF_F_LRO;
4950                 features &= ~NETIF_F_GRO;
4951         }
4952
4953         return features;
4954 }
4955
4956 int bnx2x_set_features(struct net_device *dev, netdev_features_t features)
4957 {
4958         struct bnx2x *bp = netdev_priv(dev);
4959         netdev_features_t changes = features ^ dev->features;
4960         bool bnx2x_reload = false;
4961         int rc;
4962
4963         /* VFs or non SRIOV PFs should be able to change loopback feature */
4964         if (!pci_num_vf(bp->pdev)) {
4965                 if (features & NETIF_F_LOOPBACK) {
4966                         if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
4967                                 bp->link_params.loopback_mode = LOOPBACK_BMAC;
4968                                 bnx2x_reload = true;
4969                         }
4970                 } else {
4971                         if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
4972                                 bp->link_params.loopback_mode = LOOPBACK_NONE;
4973                                 bnx2x_reload = true;
4974                         }
4975                 }
4976         }
4977
4978         /* if GRO is changed while LRO is enabled, don't force a reload */
4979         if ((changes & NETIF_F_GRO) && (features & NETIF_F_LRO))
4980                 changes &= ~NETIF_F_GRO;
4981
4982         /* if GRO is changed while HW TPA is off, don't force a reload */
4983         if ((changes & NETIF_F_GRO) && bp->disable_tpa)
4984                 changes &= ~NETIF_F_GRO;
4985
4986         if (changes)
4987                 bnx2x_reload = true;
4988
4989         if (bnx2x_reload) {
4990                 if (bp->recovery_state == BNX2X_RECOVERY_DONE) {
4991                         dev->features = features;
4992                         rc = bnx2x_reload_if_running(dev);
4993                         return rc ? rc : 1;
4994                 }
4995                 /* else: bnx2x_nic_load() will be called at end of recovery */
4996         }
4997
4998         return 0;
4999 }
5000
5001 void bnx2x_tx_timeout(struct net_device *dev)
5002 {
5003         struct bnx2x *bp = netdev_priv(dev);
5004
5005 #ifdef BNX2X_STOP_ON_ERROR
5006         if (!bp->panic)
5007                 bnx2x_panic();
5008 #endif
5009
5010         /* This allows the netif to be shutdown gracefully before resetting */
5011         bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_TIMEOUT, 0);
5012 }
5013
5014 int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state)
5015 {
5016         struct net_device *dev = pci_get_drvdata(pdev);
5017         struct bnx2x *bp;
5018
5019         if (!dev) {
5020                 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5021                 return -ENODEV;
5022         }
5023         bp = netdev_priv(dev);
5024
5025         rtnl_lock();
5026
5027         pci_save_state(pdev);
5028
5029         if (!netif_running(dev)) {
5030                 rtnl_unlock();
5031                 return 0;
5032         }
5033
5034         netif_device_detach(dev);
5035
5036         bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
5037
5038         bnx2x_set_power_state(bp, pci_choose_state(pdev, state));
5039
5040         rtnl_unlock();
5041
5042         return 0;
5043 }
5044
5045 int bnx2x_resume(struct pci_dev *pdev)
5046 {
5047         struct net_device *dev = pci_get_drvdata(pdev);
5048         struct bnx2x *bp;
5049         int rc;
5050
5051         if (!dev) {
5052                 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5053                 return -ENODEV;
5054         }
5055         bp = netdev_priv(dev);
5056
5057         if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
5058                 BNX2X_ERR("Handling parity error recovery. Try again later\n");
5059                 return -EAGAIN;
5060         }
5061
5062         rtnl_lock();
5063
5064         pci_restore_state(pdev);
5065
5066         if (!netif_running(dev)) {
5067                 rtnl_unlock();
5068                 return 0;
5069         }
5070
5071         bnx2x_set_power_state(bp, PCI_D0);
5072         netif_device_attach(dev);
5073
5074         rc = bnx2x_nic_load(bp, LOAD_OPEN);
5075
5076         rtnl_unlock();
5077
5078         return rc;
5079 }
5080
5081 void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
5082                               u32 cid)
5083 {
5084         if (!cxt) {
5085                 BNX2X_ERR("bad context pointer %p\n", cxt);
5086                 return;
5087         }
5088
5089         /* ustorm cxt validation */
5090         cxt->ustorm_ag_context.cdu_usage =
5091                 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5092                         CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
5093         /* xcontext validation */
5094         cxt->xstorm_ag_context.cdu_reserved =
5095                 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5096                         CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
5097 }
5098
5099 static void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
5100                                     u8 fw_sb_id, u8 sb_index,
5101                                     u8 ticks)
5102 {
5103         u32 addr = BAR_CSTRORM_INTMEM +
5104                    CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
5105         REG_WR8(bp, addr, ticks);
5106         DP(NETIF_MSG_IFUP,
5107            "port %x fw_sb_id %d sb_index %d ticks %d\n",
5108            port, fw_sb_id, sb_index, ticks);
5109 }
5110
5111 static void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
5112                                     u16 fw_sb_id, u8 sb_index,
5113                                     u8 disable)
5114 {
5115         u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
5116         u32 addr = BAR_CSTRORM_INTMEM +
5117                    CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
5118         u8 flags = REG_RD8(bp, addr);
5119         /* clear and set */
5120         flags &= ~HC_INDEX_DATA_HC_ENABLED;
5121         flags |= enable_flag;
5122         REG_WR8(bp, addr, flags);
5123         DP(NETIF_MSG_IFUP,
5124            "port %x fw_sb_id %d sb_index %d disable %d\n",
5125            port, fw_sb_id, sb_index, disable);
5126 }
5127
5128 void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
5129                                     u8 sb_index, u8 disable, u16 usec)
5130 {
5131         int port = BP_PORT(bp);
5132         u8 ticks = usec / BNX2X_BTR;
5133
5134         storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
5135
5136         disable = disable ? 1 : (usec ? 0 : 1);
5137         storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
5138 }
5139
5140 void bnx2x_schedule_sp_rtnl(struct bnx2x *bp, enum sp_rtnl_flag flag,
5141                             u32 verbose)
5142 {
5143         smp_mb__before_atomic();
5144         set_bit(flag, &bp->sp_rtnl_state);
5145         smp_mb__after_atomic();
5146         DP((BNX2X_MSG_SP | verbose), "Scheduling sp_rtnl task [Flag: %d]\n",
5147            flag);
5148         schedule_delayed_work(&bp->sp_rtnl_task, 0);
5149 }
5150 EXPORT_SYMBOL(bnx2x_schedule_sp_rtnl);