1 /* bnx2x_cmn.c: QLogic Everest network driver.
3 * Copyright (c) 2007-2013 Broadcom Corporation
4 * Copyright (c) 2014 QLogic Corporation
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.
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
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
22 #include <linux/etherdevice.h>
23 #include <linux/if_vlan.h>
24 #include <linux/interrupt.h>
26 #include <linux/crash_dump.h>
30 #include <net/ip6_checksum.h>
31 #include <linux/prefetch.h>
32 #include "bnx2x_cmn.h"
33 #include "bnx2x_init.h"
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);
41 static void bnx2x_add_all_napi_cnic(struct bnx2x *bp)
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);
52 static void bnx2x_add_all_napi(struct bnx2x *bp)
56 /* Add NAPI objects */
57 for_each_eth_queue(bp, i) {
58 netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
59 bnx2x_poll, NAPI_POLL_WEIGHT);
63 static int bnx2x_calc_num_queues(struct bnx2x *bp)
65 int nq = bnx2x_num_queues ? : netif_get_num_default_rss_queues();
67 /* Reduce memory usage in kdump environment by using only one queue */
68 if (is_kdump_kernel())
71 nq = clamp(nq, 1, BNX2X_MAX_QUEUES(bp));
76 * bnx2x_move_fp - move content of the fastpath structure.
79 * @from: source FP index
80 * @to: destination FP index
82 * Makes sure the contents of the bp->fp[to].napi is kept
83 * intact. This is done by first copying the napi struct from
84 * the target to the source, and then mem copying the entire
85 * source onto the target. Update txdata pointers and related
88 static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
90 struct bnx2x_fastpath *from_fp = &bp->fp[from];
91 struct bnx2x_fastpath *to_fp = &bp->fp[to];
92 struct bnx2x_sp_objs *from_sp_objs = &bp->sp_objs[from];
93 struct bnx2x_sp_objs *to_sp_objs = &bp->sp_objs[to];
94 struct bnx2x_fp_stats *from_fp_stats = &bp->fp_stats[from];
95 struct bnx2x_fp_stats *to_fp_stats = &bp->fp_stats[to];
96 int old_max_eth_txqs, new_max_eth_txqs;
97 int old_txdata_index = 0, new_txdata_index = 0;
98 struct bnx2x_agg_info *old_tpa_info = to_fp->tpa_info;
100 /* Copy the NAPI object as it has been already initialized */
101 from_fp->napi = to_fp->napi;
103 /* Move bnx2x_fastpath contents */
104 memcpy(to_fp, from_fp, sizeof(*to_fp));
107 /* Retain the tpa_info of the original `to' version as we don't want
108 * 2 FPs to contain the same tpa_info pointer.
110 to_fp->tpa_info = old_tpa_info;
112 /* move sp_objs contents as well, as their indices match fp ones */
113 memcpy(to_sp_objs, from_sp_objs, sizeof(*to_sp_objs));
115 /* move fp_stats contents as well, as their indices match fp ones */
116 memcpy(to_fp_stats, from_fp_stats, sizeof(*to_fp_stats));
118 /* Update txdata pointers in fp and move txdata content accordingly:
119 * Each fp consumes 'max_cos' txdata structures, so the index should be
120 * decremented by max_cos x delta.
123 old_max_eth_txqs = BNX2X_NUM_ETH_QUEUES(bp) * (bp)->max_cos;
124 new_max_eth_txqs = (BNX2X_NUM_ETH_QUEUES(bp) - from + to) *
126 if (from == FCOE_IDX(bp)) {
127 old_txdata_index = old_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
128 new_txdata_index = new_max_eth_txqs + FCOE_TXQ_IDX_OFFSET;
131 memcpy(&bp->bnx2x_txq[new_txdata_index],
132 &bp->bnx2x_txq[old_txdata_index],
133 sizeof(struct bnx2x_fp_txdata));
134 to_fp->txdata_ptr[0] = &bp->bnx2x_txq[new_txdata_index];
138 * bnx2x_fill_fw_str - Fill buffer with FW version string.
141 * @buf: character buffer to fill with the fw name
142 * @buf_len: length of the above buffer
145 void bnx2x_fill_fw_str(struct bnx2x *bp, char *buf, size_t buf_len)
148 u8 phy_fw_ver[PHY_FW_VER_LEN];
150 phy_fw_ver[0] = '\0';
151 bnx2x_get_ext_phy_fw_version(&bp->link_params,
152 phy_fw_ver, PHY_FW_VER_LEN);
153 strlcpy(buf, bp->fw_ver, buf_len);
154 snprintf(buf + strlen(bp->fw_ver), 32 - strlen(bp->fw_ver),
156 (bp->common.bc_ver & 0xff0000) >> 16,
157 (bp->common.bc_ver & 0xff00) >> 8,
158 (bp->common.bc_ver & 0xff),
159 ((phy_fw_ver[0] != '\0') ? " phy " : ""), phy_fw_ver);
161 bnx2x_vf_fill_fw_str(bp, buf, buf_len);
166 * bnx2x_shrink_eth_fp - guarantees fastpath structures stay intact
169 * @delta: number of eth queues which were not allocated
171 static void bnx2x_shrink_eth_fp(struct bnx2x *bp, int delta)
173 int i, cos, old_eth_num = BNX2X_NUM_ETH_QUEUES(bp);
175 /* Queue pointer cannot be re-set on an fp-basis, as moving pointer
176 * backward along the array could cause memory to be overridden
178 for (cos = 1; cos < bp->max_cos; cos++) {
179 for (i = 0; i < old_eth_num - delta; i++) {
180 struct bnx2x_fastpath *fp = &bp->fp[i];
181 int new_idx = cos * (old_eth_num - delta) + i;
183 memcpy(&bp->bnx2x_txq[new_idx], fp->txdata_ptr[cos],
184 sizeof(struct bnx2x_fp_txdata));
185 fp->txdata_ptr[cos] = &bp->bnx2x_txq[new_idx];
190 int bnx2x_load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
192 /* free skb in the packet ring at pos idx
193 * return idx of last bd freed
195 static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
196 u16 idx, unsigned int *pkts_compl,
197 unsigned int *bytes_compl)
199 struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
200 struct eth_tx_start_bd *tx_start_bd;
201 struct eth_tx_bd *tx_data_bd;
202 struct sk_buff *skb = tx_buf->skb;
203 u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
205 u16 split_bd_len = 0;
207 /* prefetch skb end pointer to speedup dev_kfree_skb() */
210 DP(NETIF_MSG_TX_DONE, "fp[%d]: pkt_idx %d buff @(%p)->skb %p\n",
211 txdata->txq_index, idx, tx_buf, skb);
213 tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
215 nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
216 #ifdef BNX2X_STOP_ON_ERROR
217 if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
218 BNX2X_ERR("BAD nbd!\n");
222 new_cons = nbd + tx_buf->first_bd;
224 /* Get the next bd */
225 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
227 /* Skip a parse bd... */
229 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
231 if (tx_buf->flags & BNX2X_HAS_SECOND_PBD) {
232 /* Skip second parse bd... */
234 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
237 /* TSO headers+data bds share a common mapping. See bnx2x_tx_split() */
238 if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
239 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
240 split_bd_len = BD_UNMAP_LEN(tx_data_bd);
242 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
246 dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
247 BD_UNMAP_LEN(tx_start_bd) + split_bd_len,
253 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
254 dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
255 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
257 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
264 (*bytes_compl) += skb->len;
265 dev_kfree_skb_any(skb);
268 tx_buf->first_bd = 0;
274 int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
276 struct netdev_queue *txq;
277 u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
278 unsigned int pkts_compl = 0, bytes_compl = 0;
280 #ifdef BNX2X_STOP_ON_ERROR
281 if (unlikely(bp->panic))
285 txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
286 hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
287 sw_cons = txdata->tx_pkt_cons;
289 /* Ensure subsequent loads occur after hw_cons */
292 while (sw_cons != hw_cons) {
295 pkt_cons = TX_BD(sw_cons);
297 DP(NETIF_MSG_TX_DONE,
298 "queue[%d]: hw_cons %u sw_cons %u pkt_cons %u\n",
299 txdata->txq_index, hw_cons, sw_cons, pkt_cons);
301 bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons,
302 &pkts_compl, &bytes_compl);
307 netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
309 txdata->tx_pkt_cons = sw_cons;
310 txdata->tx_bd_cons = bd_cons;
312 /* Need to make the tx_bd_cons update visible to start_xmit()
313 * before checking for netif_tx_queue_stopped(). Without the
314 * memory barrier, there is a small possibility that
315 * start_xmit() will miss it and cause the queue to be stopped
317 * On the other hand we need an rmb() here to ensure the proper
318 * ordering of bit testing in the following
319 * netif_tx_queue_stopped(txq) call.
323 if (unlikely(netif_tx_queue_stopped(txq))) {
324 /* Taking tx_lock() is needed to prevent re-enabling the queue
325 * while it's empty. This could have happen if rx_action() gets
326 * suspended in bnx2x_tx_int() after the condition before
327 * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
329 * stops the queue->sees fresh tx_bd_cons->releases the queue->
330 * sends some packets consuming the whole queue again->
334 __netif_tx_lock(txq, smp_processor_id());
336 if ((netif_tx_queue_stopped(txq)) &&
337 (bp->state == BNX2X_STATE_OPEN) &&
338 (bnx2x_tx_avail(bp, txdata) >= MAX_DESC_PER_TX_PKT))
339 netif_tx_wake_queue(txq);
341 __netif_tx_unlock(txq);
346 static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
349 u16 last_max = fp->last_max_sge;
351 if (SUB_S16(idx, last_max) > 0)
352 fp->last_max_sge = idx;
355 static inline void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
357 struct eth_end_agg_rx_cqe *cqe)
359 struct bnx2x *bp = fp->bp;
360 u16 last_max, last_elem, first_elem;
367 /* First mark all used pages */
368 for (i = 0; i < sge_len; i++)
369 BIT_VEC64_CLEAR_BIT(fp->sge_mask,
370 RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[i])));
372 DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n",
373 sge_len - 1, le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
375 /* Here we assume that the last SGE index is the biggest */
376 prefetch((void *)(fp->sge_mask));
377 bnx2x_update_last_max_sge(fp,
378 le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
380 last_max = RX_SGE(fp->last_max_sge);
381 last_elem = last_max >> BIT_VEC64_ELEM_SHIFT;
382 first_elem = RX_SGE(fp->rx_sge_prod) >> BIT_VEC64_ELEM_SHIFT;
384 /* If ring is not full */
385 if (last_elem + 1 != first_elem)
388 /* Now update the prod */
389 for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
390 if (likely(fp->sge_mask[i]))
393 fp->sge_mask[i] = BIT_VEC64_ELEM_ONE_MASK;
394 delta += BIT_VEC64_ELEM_SZ;
398 fp->rx_sge_prod += delta;
399 /* clear page-end entries */
400 bnx2x_clear_sge_mask_next_elems(fp);
403 DP(NETIF_MSG_RX_STATUS,
404 "fp->last_max_sge = %d fp->rx_sge_prod = %d\n",
405 fp->last_max_sge, fp->rx_sge_prod);
408 /* Get Toeplitz hash value in the skb using the value from the
409 * CQE (calculated by HW).
411 static u32 bnx2x_get_rxhash(const struct bnx2x *bp,
412 const struct eth_fast_path_rx_cqe *cqe,
413 enum pkt_hash_types *rxhash_type)
415 /* Get Toeplitz hash from CQE */
416 if ((bp->dev->features & NETIF_F_RXHASH) &&
417 (cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) {
418 enum eth_rss_hash_type htype;
420 htype = cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_TYPE;
421 *rxhash_type = ((htype == TCP_IPV4_HASH_TYPE) ||
422 (htype == TCP_IPV6_HASH_TYPE)) ?
423 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3;
425 return le32_to_cpu(cqe->rss_hash_result);
427 *rxhash_type = PKT_HASH_TYPE_NONE;
431 static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
433 struct eth_fast_path_rx_cqe *cqe)
435 struct bnx2x *bp = fp->bp;
436 struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
437 struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
438 struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
440 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
441 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
443 /* print error if current state != stop */
444 if (tpa_info->tpa_state != BNX2X_TPA_STOP)
445 BNX2X_ERR("start of bin not in stop [%d]\n", queue);
447 /* Try to map an empty data buffer from the aggregation info */
448 mapping = dma_map_single(&bp->pdev->dev,
449 first_buf->data + NET_SKB_PAD,
450 fp->rx_buf_size, DMA_FROM_DEVICE);
452 * ...if it fails - move the skb from the consumer to the producer
453 * and set the current aggregation state as ERROR to drop it
454 * when TPA_STOP arrives.
457 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
458 /* Move the BD from the consumer to the producer */
459 bnx2x_reuse_rx_data(fp, cons, prod);
460 tpa_info->tpa_state = BNX2X_TPA_ERROR;
464 /* move empty data from pool to prod */
465 prod_rx_buf->data = first_buf->data;
466 dma_unmap_addr_set(prod_rx_buf, mapping, mapping);
467 /* point prod_bd to new data */
468 prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
469 prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
471 /* move partial skb from cons to pool (don't unmap yet) */
472 *first_buf = *cons_rx_buf;
474 /* mark bin state as START */
475 tpa_info->parsing_flags =
476 le16_to_cpu(cqe->pars_flags.flags);
477 tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
478 tpa_info->tpa_state = BNX2X_TPA_START;
479 tpa_info->len_on_bd = le16_to_cpu(cqe->len_on_bd);
480 tpa_info->placement_offset = cqe->placement_offset;
481 tpa_info->rxhash = bnx2x_get_rxhash(bp, cqe, &tpa_info->rxhash_type);
482 if (fp->mode == TPA_MODE_GRO) {
483 u16 gro_size = le16_to_cpu(cqe->pkt_len_or_gro_seg_len);
484 tpa_info->full_page = SGE_PAGES / gro_size * gro_size;
485 tpa_info->gro_size = gro_size;
488 #ifdef BNX2X_STOP_ON_ERROR
489 fp->tpa_queue_used |= (1 << queue);
490 DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
495 /* Timestamp option length allowed for TPA aggregation:
497 * nop nop kind length echo val
499 #define TPA_TSTAMP_OPT_LEN 12
501 * bnx2x_set_gro_params - compute GRO values
504 * @parsing_flags: parsing flags from the START CQE
505 * @len_on_bd: total length of the first packet for the
507 * @pkt_len: length of all segments
508 * @num_of_coalesced_segs: count of segments
510 * Approximate value of the MSS for this aggregation calculated using
511 * the first packet of it.
512 * Compute number of aggregated segments, and gso_type.
514 static void bnx2x_set_gro_params(struct sk_buff *skb, u16 parsing_flags,
515 u16 len_on_bd, unsigned int pkt_len,
516 u16 num_of_coalesced_segs)
518 /* TPA aggregation won't have either IP options or TCP options
519 * other than timestamp or IPv6 extension headers.
521 u16 hdrs_len = ETH_HLEN + sizeof(struct tcphdr);
523 if (GET_FLAG(parsing_flags, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
524 PRS_FLAG_OVERETH_IPV6) {
525 hdrs_len += sizeof(struct ipv6hdr);
526 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
528 hdrs_len += sizeof(struct iphdr);
529 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
532 /* Check if there was a TCP timestamp, if there is it's will
533 * always be 12 bytes length: nop nop kind length echo val.
535 * Otherwise FW would close the aggregation.
537 if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
538 hdrs_len += TPA_TSTAMP_OPT_LEN;
540 skb_shinfo(skb)->gso_size = len_on_bd - hdrs_len;
542 /* tcp_gro_complete() will copy NAPI_GRO_CB(skb)->count
543 * to skb_shinfo(skb)->gso_segs
545 NAPI_GRO_CB(skb)->count = num_of_coalesced_segs;
548 static int bnx2x_alloc_rx_sge(struct bnx2x *bp, struct bnx2x_fastpath *fp,
549 u16 index, gfp_t gfp_mask)
551 struct sw_rx_page *sw_buf = &fp->rx_page_ring[index];
552 struct eth_rx_sge *sge = &fp->rx_sge_ring[index];
553 struct bnx2x_alloc_pool *pool = &fp->page_pool;
557 pool->page = alloc_pages(gfp_mask, PAGES_PER_SGE_SHIFT);
558 if (unlikely(!pool->page))
564 mapping = dma_map_page(&bp->pdev->dev, pool->page,
565 pool->offset, SGE_PAGE_SIZE, DMA_FROM_DEVICE);
566 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
567 BNX2X_ERR("Can't map sge\n");
571 sw_buf->page = pool->page;
572 sw_buf->offset = pool->offset;
574 dma_unmap_addr_set(sw_buf, mapping, mapping);
576 sge->addr_hi = cpu_to_le32(U64_HI(mapping));
577 sge->addr_lo = cpu_to_le32(U64_LO(mapping));
579 pool->offset += SGE_PAGE_SIZE;
580 if (PAGE_SIZE - pool->offset >= SGE_PAGE_SIZE)
581 get_page(pool->page);
587 static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
588 struct bnx2x_agg_info *tpa_info,
591 struct eth_end_agg_rx_cqe *cqe,
594 struct sw_rx_page *rx_pg, old_rx_pg;
595 u32 i, frag_len, frag_size;
596 int err, j, frag_id = 0;
597 u16 len_on_bd = tpa_info->len_on_bd;
598 u16 full_page = 0, gro_size = 0;
600 frag_size = le16_to_cpu(cqe->pkt_len) - len_on_bd;
602 if (fp->mode == TPA_MODE_GRO) {
603 gro_size = tpa_info->gro_size;
604 full_page = tpa_info->full_page;
607 /* This is needed in order to enable forwarding support */
609 bnx2x_set_gro_params(skb, tpa_info->parsing_flags, len_on_bd,
610 le16_to_cpu(cqe->pkt_len),
611 le16_to_cpu(cqe->num_of_coalesced_segs));
613 #ifdef BNX2X_STOP_ON_ERROR
614 if (pages > min_t(u32, 8, MAX_SKB_FRAGS) * SGE_PAGES) {
615 BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
617 BNX2X_ERR("cqe->pkt_len = %d\n", cqe->pkt_len);
623 /* Run through the SGL and compose the fragmented skb */
624 for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
625 u16 sge_idx = RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[j]));
627 /* FW gives the indices of the SGE as if the ring is an array
628 (meaning that "next" element will consume 2 indices) */
629 if (fp->mode == TPA_MODE_GRO)
630 frag_len = min_t(u32, frag_size, (u32)full_page);
632 frag_len = min_t(u32, frag_size, (u32)SGE_PAGES);
634 rx_pg = &fp->rx_page_ring[sge_idx];
637 /* If we fail to allocate a substitute page, we simply stop
638 where we are and drop the whole packet */
639 err = bnx2x_alloc_rx_sge(bp, fp, sge_idx, GFP_ATOMIC);
641 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
645 dma_unmap_page(&bp->pdev->dev,
646 dma_unmap_addr(&old_rx_pg, mapping),
647 SGE_PAGE_SIZE, DMA_FROM_DEVICE);
648 /* Add one frag and update the appropriate fields in the skb */
649 if (fp->mode == TPA_MODE_LRO)
650 skb_fill_page_desc(skb, j, old_rx_pg.page,
651 old_rx_pg.offset, frag_len);
655 for (rem = frag_len; rem > 0; rem -= gro_size) {
656 int len = rem > gro_size ? gro_size : rem;
657 skb_fill_page_desc(skb, frag_id++,
659 old_rx_pg.offset + offset,
662 get_page(old_rx_pg.page);
667 skb->data_len += frag_len;
668 skb->truesize += SGE_PAGES;
669 skb->len += frag_len;
671 frag_size -= frag_len;
677 static void bnx2x_frag_free(const struct bnx2x_fastpath *fp, void *data)
679 if (fp->rx_frag_size)
685 static void *bnx2x_frag_alloc(const struct bnx2x_fastpath *fp, gfp_t gfp_mask)
687 if (fp->rx_frag_size) {
688 /* GFP_KERNEL allocations are used only during initialization */
689 if (unlikely(gfpflags_allow_blocking(gfp_mask)))
690 return (void *)__get_free_page(gfp_mask);
692 return napi_alloc_frag(fp->rx_frag_size);
695 return kmalloc(fp->rx_buf_size + NET_SKB_PAD, gfp_mask);
699 static void bnx2x_gro_ip_csum(struct bnx2x *bp, struct sk_buff *skb)
701 const struct iphdr *iph = ip_hdr(skb);
704 skb_set_transport_header(skb, sizeof(struct iphdr));
707 th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),
708 iph->saddr, iph->daddr, 0);
711 static void bnx2x_gro_ipv6_csum(struct bnx2x *bp, struct sk_buff *skb)
713 struct ipv6hdr *iph = ipv6_hdr(skb);
716 skb_set_transport_header(skb, sizeof(struct ipv6hdr));
719 th->check = ~tcp_v6_check(skb->len - skb_transport_offset(skb),
720 &iph->saddr, &iph->daddr, 0);
723 static void bnx2x_gro_csum(struct bnx2x *bp, struct sk_buff *skb,
724 void (*gro_func)(struct bnx2x*, struct sk_buff*))
726 skb_reset_network_header(skb);
728 tcp_gro_complete(skb);
732 static void bnx2x_gro_receive(struct bnx2x *bp, struct bnx2x_fastpath *fp,
736 if (skb_shinfo(skb)->gso_size) {
737 switch (be16_to_cpu(skb->protocol)) {
739 bnx2x_gro_csum(bp, skb, bnx2x_gro_ip_csum);
742 bnx2x_gro_csum(bp, skb, bnx2x_gro_ipv6_csum);
745 netdev_WARN_ONCE(bp->dev,
746 "Error: FW GRO supports only IPv4/IPv6, not 0x%04x\n",
747 be16_to_cpu(skb->protocol));
751 skb_record_rx_queue(skb, fp->rx_queue);
752 napi_gro_receive(&fp->napi, skb);
755 static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
756 struct bnx2x_agg_info *tpa_info,
758 struct eth_end_agg_rx_cqe *cqe,
761 struct sw_rx_bd *rx_buf = &tpa_info->first_buf;
762 u8 pad = tpa_info->placement_offset;
763 u16 len = tpa_info->len_on_bd;
764 struct sk_buff *skb = NULL;
765 u8 *new_data, *data = rx_buf->data;
766 u8 old_tpa_state = tpa_info->tpa_state;
768 tpa_info->tpa_state = BNX2X_TPA_STOP;
770 /* If we there was an error during the handling of the TPA_START -
771 * drop this aggregation.
773 if (old_tpa_state == BNX2X_TPA_ERROR)
776 /* Try to allocate the new data */
777 new_data = bnx2x_frag_alloc(fp, GFP_ATOMIC);
778 /* Unmap skb in the pool anyway, as we are going to change
779 pool entry status to BNX2X_TPA_STOP even if new skb allocation
781 dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
782 fp->rx_buf_size, DMA_FROM_DEVICE);
783 if (likely(new_data))
784 skb = build_skb(data, fp->rx_frag_size);
787 #ifdef BNX2X_STOP_ON_ERROR
788 if (pad + len > fp->rx_buf_size) {
789 BNX2X_ERR("skb_put is about to fail... pad %d len %d rx_buf_size %d\n",
790 pad, len, fp->rx_buf_size);
796 skb_reserve(skb, pad + NET_SKB_PAD);
798 skb_set_hash(skb, tpa_info->rxhash, tpa_info->rxhash_type);
800 skb->protocol = eth_type_trans(skb, bp->dev);
801 skb->ip_summed = CHECKSUM_UNNECESSARY;
803 if (!bnx2x_fill_frag_skb(bp, fp, tpa_info, pages,
804 skb, cqe, cqe_idx)) {
805 if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
806 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tpa_info->vlan_tag);
807 bnx2x_gro_receive(bp, fp, skb);
809 DP(NETIF_MSG_RX_STATUS,
810 "Failed to allocate new pages - dropping packet!\n");
811 dev_kfree_skb_any(skb);
814 /* put new data in bin */
815 rx_buf->data = new_data;
820 bnx2x_frag_free(fp, new_data);
822 /* drop the packet and keep the buffer in the bin */
823 DP(NETIF_MSG_RX_STATUS,
824 "Failed to allocate or map a new skb - dropping packet!\n");
825 bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed++;
828 static int bnx2x_alloc_rx_data(struct bnx2x *bp, struct bnx2x_fastpath *fp,
829 u16 index, gfp_t gfp_mask)
832 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[index];
833 struct eth_rx_bd *rx_bd = &fp->rx_desc_ring[index];
836 data = bnx2x_frag_alloc(fp, gfp_mask);
837 if (unlikely(data == NULL))
840 mapping = dma_map_single(&bp->pdev->dev, data + NET_SKB_PAD,
843 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
844 bnx2x_frag_free(fp, data);
845 BNX2X_ERR("Can't map rx data\n");
850 dma_unmap_addr_set(rx_buf, mapping, mapping);
852 rx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
853 rx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
859 void bnx2x_csum_validate(struct sk_buff *skb, union eth_rx_cqe *cqe,
860 struct bnx2x_fastpath *fp,
861 struct bnx2x_eth_q_stats *qstats)
863 /* Do nothing if no L4 csum validation was done.
864 * We do not check whether IP csum was validated. For IPv4 we assume
865 * that if the card got as far as validating the L4 csum, it also
866 * validated the IP csum. IPv6 has no IP csum.
868 if (cqe->fast_path_cqe.status_flags &
869 ETH_FAST_PATH_RX_CQE_L4_XSUM_NO_VALIDATION_FLG)
872 /* If L4 validation was done, check if an error was found. */
874 if (cqe->fast_path_cqe.type_error_flags &
875 (ETH_FAST_PATH_RX_CQE_IP_BAD_XSUM_FLG |
876 ETH_FAST_PATH_RX_CQE_L4_BAD_XSUM_FLG))
877 qstats->hw_csum_err++;
879 skb->ip_summed = CHECKSUM_UNNECESSARY;
882 static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
884 struct bnx2x *bp = fp->bp;
885 u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
886 u16 sw_comp_cons, sw_comp_prod;
888 union eth_rx_cqe *cqe;
889 struct eth_fast_path_rx_cqe *cqe_fp;
891 #ifdef BNX2X_STOP_ON_ERROR
892 if (unlikely(bp->panic))
898 bd_cons = fp->rx_bd_cons;
899 bd_prod = fp->rx_bd_prod;
900 bd_prod_fw = bd_prod;
901 sw_comp_cons = fp->rx_comp_cons;
902 sw_comp_prod = fp->rx_comp_prod;
904 comp_ring_cons = RCQ_BD(sw_comp_cons);
905 cqe = &fp->rx_comp_ring[comp_ring_cons];
906 cqe_fp = &cqe->fast_path_cqe;
908 DP(NETIF_MSG_RX_STATUS,
909 "queue[%d]: sw_comp_cons %u\n", fp->index, sw_comp_cons);
911 while (BNX2X_IS_CQE_COMPLETED(cqe_fp)) {
912 struct sw_rx_bd *rx_buf = NULL;
915 enum eth_rx_cqe_type cqe_fp_type;
919 enum pkt_hash_types rxhash_type;
921 #ifdef BNX2X_STOP_ON_ERROR
922 if (unlikely(bp->panic))
926 bd_prod = RX_BD(bd_prod);
927 bd_cons = RX_BD(bd_cons);
929 /* A rmb() is required to ensure that the CQE is not read
930 * before it is written by the adapter DMA. PCI ordering
931 * rules will make sure the other fields are written before
932 * the marker at the end of struct eth_fast_path_rx_cqe
933 * but without rmb() a weakly ordered processor can process
934 * stale data. Without the barrier TPA state-machine might
935 * enter inconsistent state and kernel stack might be
936 * provided with incorrect packet description - these lead
937 * to various kernel crashed.
941 cqe_fp_flags = cqe_fp->type_error_flags;
942 cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
944 DP(NETIF_MSG_RX_STATUS,
945 "CQE type %x err %x status %x queue %x vlan %x len %u\n",
946 CQE_TYPE(cqe_fp_flags),
947 cqe_fp_flags, cqe_fp->status_flags,
948 le32_to_cpu(cqe_fp->rss_hash_result),
949 le16_to_cpu(cqe_fp->vlan_tag),
950 le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len));
952 /* is this a slowpath msg? */
953 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
954 bnx2x_sp_event(fp, cqe);
958 rx_buf = &fp->rx_buf_ring[bd_cons];
961 if (!CQE_TYPE_FAST(cqe_fp_type)) {
962 struct bnx2x_agg_info *tpa_info;
963 u16 frag_size, pages;
964 #ifdef BNX2X_STOP_ON_ERROR
966 if (fp->mode == TPA_MODE_DISABLED &&
967 (CQE_TYPE_START(cqe_fp_type) ||
968 CQE_TYPE_STOP(cqe_fp_type)))
969 BNX2X_ERR("START/STOP packet while TPA disabled, type %x\n",
970 CQE_TYPE(cqe_fp_type));
973 if (CQE_TYPE_START(cqe_fp_type)) {
974 u16 queue = cqe_fp->queue_index;
975 DP(NETIF_MSG_RX_STATUS,
976 "calling tpa_start on queue %d\n",
979 bnx2x_tpa_start(fp, queue,
985 queue = cqe->end_agg_cqe.queue_index;
986 tpa_info = &fp->tpa_info[queue];
987 DP(NETIF_MSG_RX_STATUS,
988 "calling tpa_stop on queue %d\n",
991 frag_size = le16_to_cpu(cqe->end_agg_cqe.pkt_len) -
994 if (fp->mode == TPA_MODE_GRO)
995 pages = (frag_size + tpa_info->full_page - 1) /
998 pages = SGE_PAGE_ALIGN(frag_size) >>
1001 bnx2x_tpa_stop(bp, fp, tpa_info, pages,
1002 &cqe->end_agg_cqe, comp_ring_cons);
1003 #ifdef BNX2X_STOP_ON_ERROR
1008 bnx2x_update_sge_prod(fp, pages, &cqe->end_agg_cqe);
1012 len = le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len);
1013 pad = cqe_fp->placement_offset;
1014 dma_sync_single_for_cpu(&bp->pdev->dev,
1015 dma_unmap_addr(rx_buf, mapping),
1016 pad + RX_COPY_THRESH,
1019 prefetch(data + pad); /* speedup eth_type_trans() */
1020 /* is this an error packet? */
1021 if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
1022 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1023 "ERROR flags %x rx packet %u\n",
1024 cqe_fp_flags, sw_comp_cons);
1025 bnx2x_fp_qstats(bp, fp)->rx_err_discard_pkt++;
1029 /* Since we don't have a jumbo ring
1030 * copy small packets if mtu > 1500
1032 if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
1033 (len <= RX_COPY_THRESH)) {
1034 skb = napi_alloc_skb(&fp->napi, len);
1036 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1037 "ERROR packet dropped because of alloc failure\n");
1038 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1041 memcpy(skb->data, data + pad, len);
1042 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1044 if (likely(bnx2x_alloc_rx_data(bp, fp, bd_prod,
1045 GFP_ATOMIC) == 0)) {
1046 dma_unmap_single(&bp->pdev->dev,
1047 dma_unmap_addr(rx_buf, mapping),
1050 skb = build_skb(data, fp->rx_frag_size);
1051 if (unlikely(!skb)) {
1052 bnx2x_frag_free(fp, data);
1053 bnx2x_fp_qstats(bp, fp)->
1054 rx_skb_alloc_failed++;
1057 skb_reserve(skb, pad);
1059 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
1060 "ERROR packet dropped because of alloc failure\n");
1061 bnx2x_fp_qstats(bp, fp)->rx_skb_alloc_failed++;
1063 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
1069 skb->protocol = eth_type_trans(skb, bp->dev);
1071 /* Set Toeplitz hash for a none-LRO skb */
1072 rxhash = bnx2x_get_rxhash(bp, cqe_fp, &rxhash_type);
1073 skb_set_hash(skb, rxhash, rxhash_type);
1075 skb_checksum_none_assert(skb);
1077 if (bp->dev->features & NETIF_F_RXCSUM)
1078 bnx2x_csum_validate(skb, cqe, fp,
1079 bnx2x_fp_qstats(bp, fp));
1081 skb_record_rx_queue(skb, fp->rx_queue);
1083 /* Check if this packet was timestamped */
1084 if (unlikely(cqe->fast_path_cqe.type_error_flags &
1085 (1 << ETH_FAST_PATH_RX_CQE_PTP_PKT_SHIFT)))
1086 bnx2x_set_rx_ts(bp, skb);
1088 if (le16_to_cpu(cqe_fp->pars_flags.flags) &
1090 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
1091 le16_to_cpu(cqe_fp->vlan_tag));
1093 napi_gro_receive(&fp->napi, skb);
1095 rx_buf->data = NULL;
1097 bd_cons = NEXT_RX_IDX(bd_cons);
1098 bd_prod = NEXT_RX_IDX(bd_prod);
1099 bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
1102 sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
1103 sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
1105 /* mark CQE as free */
1106 BNX2X_SEED_CQE(cqe_fp);
1108 if (rx_pkt == budget)
1111 comp_ring_cons = RCQ_BD(sw_comp_cons);
1112 cqe = &fp->rx_comp_ring[comp_ring_cons];
1113 cqe_fp = &cqe->fast_path_cqe;
1116 fp->rx_bd_cons = bd_cons;
1117 fp->rx_bd_prod = bd_prod_fw;
1118 fp->rx_comp_cons = sw_comp_cons;
1119 fp->rx_comp_prod = sw_comp_prod;
1121 /* Update producers */
1122 bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
1128 static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
1130 struct bnx2x_fastpath *fp = fp_cookie;
1131 struct bnx2x *bp = fp->bp;
1135 "got an MSI-X interrupt on IDX:SB [fp %d fw_sd %d igusb %d]\n",
1136 fp->index, fp->fw_sb_id, fp->igu_sb_id);
1138 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
1140 #ifdef BNX2X_STOP_ON_ERROR
1141 if (unlikely(bp->panic))
1145 /* Handle Rx and Tx according to MSI-X vector */
1146 for_each_cos_in_tx_queue(fp, cos)
1147 prefetch(fp->txdata_ptr[cos]->tx_cons_sb);
1149 prefetch(&fp->sb_running_index[SM_RX_ID]);
1150 napi_schedule_irqoff(&bnx2x_fp(bp, fp->index, napi));
1155 /* HW Lock for shared dual port PHYs */
1156 void bnx2x_acquire_phy_lock(struct bnx2x *bp)
1158 mutex_lock(&bp->port.phy_mutex);
1160 bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1163 void bnx2x_release_phy_lock(struct bnx2x *bp)
1165 bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
1167 mutex_unlock(&bp->port.phy_mutex);
1170 /* calculates MF speed according to current linespeed and MF configuration */
1171 u16 bnx2x_get_mf_speed(struct bnx2x *bp)
1173 u16 line_speed = bp->link_vars.line_speed;
1175 u16 maxCfg = bnx2x_extract_max_cfg(bp,
1176 bp->mf_config[BP_VN(bp)]);
1178 /* Calculate the current MAX line speed limit for the MF
1181 if (IS_MF_PERCENT_BW(bp))
1182 line_speed = (line_speed * maxCfg) / 100;
1183 else { /* SD mode */
1184 u16 vn_max_rate = maxCfg * 100;
1186 if (vn_max_rate < line_speed)
1187 line_speed = vn_max_rate;
1195 * bnx2x_fill_report_data - fill link report data to report
1197 * @bp: driver handle
1198 * @data: link state to update
1200 * It uses a none-atomic bit operations because is called under the mutex.
1202 static void bnx2x_fill_report_data(struct bnx2x *bp,
1203 struct bnx2x_link_report_data *data)
1205 memset(data, 0, sizeof(*data));
1208 /* Fill the report data: effective line speed */
1209 data->line_speed = bnx2x_get_mf_speed(bp);
1212 if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
1213 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1214 &data->link_report_flags);
1216 if (!BNX2X_NUM_ETH_QUEUES(bp))
1217 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1218 &data->link_report_flags);
1221 if (bp->link_vars.duplex == DUPLEX_FULL)
1222 __set_bit(BNX2X_LINK_REPORT_FD,
1223 &data->link_report_flags);
1225 /* Rx Flow Control is ON */
1226 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
1227 __set_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1228 &data->link_report_flags);
1230 /* Tx Flow Control is ON */
1231 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
1232 __set_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1233 &data->link_report_flags);
1235 *data = bp->vf_link_vars;
1240 * bnx2x_link_report - report link status to OS.
1242 * @bp: driver handle
1244 * Calls the __bnx2x_link_report() under the same locking scheme
1245 * as a link/PHY state managing code to ensure a consistent link
1249 void bnx2x_link_report(struct bnx2x *bp)
1251 bnx2x_acquire_phy_lock(bp);
1252 __bnx2x_link_report(bp);
1253 bnx2x_release_phy_lock(bp);
1257 * __bnx2x_link_report - report link status to OS.
1259 * @bp: driver handle
1261 * None atomic implementation.
1262 * Should be called under the phy_lock.
1264 void __bnx2x_link_report(struct bnx2x *bp)
1266 struct bnx2x_link_report_data cur_data;
1268 if (bp->force_link_down) {
1269 bp->link_vars.link_up = 0;
1274 if (IS_PF(bp) && !CHIP_IS_E1(bp))
1275 bnx2x_read_mf_cfg(bp);
1277 /* Read the current link report info */
1278 bnx2x_fill_report_data(bp, &cur_data);
1280 /* Don't report link down or exactly the same link status twice */
1281 if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
1282 (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1283 &bp->last_reported_link.link_report_flags) &&
1284 test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1285 &cur_data.link_report_flags)))
1290 /* We are going to report a new link parameters now -
1291 * remember the current data for the next time.
1293 memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
1295 /* propagate status to VFs */
1297 bnx2x_iov_link_update(bp);
1299 if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1300 &cur_data.link_report_flags)) {
1301 netif_carrier_off(bp->dev);
1302 netdev_err(bp->dev, "NIC Link is Down\n");
1308 netif_carrier_on(bp->dev);
1310 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
1311 &cur_data.link_report_flags))
1316 /* Handle the FC at the end so that only these flags would be
1317 * possibly set. This way we may easily check if there is no FC
1320 if (cur_data.link_report_flags) {
1321 if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1322 &cur_data.link_report_flags)) {
1323 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1324 &cur_data.link_report_flags))
1325 flow = "ON - receive & transmit";
1327 flow = "ON - receive";
1329 flow = "ON - transmit";
1334 netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
1335 cur_data.line_speed, duplex, flow);
1339 static void bnx2x_set_next_page_sgl(struct bnx2x_fastpath *fp)
1343 for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
1344 struct eth_rx_sge *sge;
1346 sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2];
1348 cpu_to_le32(U64_HI(fp->rx_sge_mapping +
1349 BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1352 cpu_to_le32(U64_LO(fp->rx_sge_mapping +
1353 BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1357 static void bnx2x_free_tpa_pool(struct bnx2x *bp,
1358 struct bnx2x_fastpath *fp, int last)
1362 for (i = 0; i < last; i++) {
1363 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[i];
1364 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
1365 u8 *data = first_buf->data;
1368 DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i);
1371 if (tpa_info->tpa_state == BNX2X_TPA_START)
1372 dma_unmap_single(&bp->pdev->dev,
1373 dma_unmap_addr(first_buf, mapping),
1374 fp->rx_buf_size, DMA_FROM_DEVICE);
1375 bnx2x_frag_free(fp, data);
1376 first_buf->data = NULL;
1380 void bnx2x_init_rx_rings_cnic(struct bnx2x *bp)
1384 for_each_rx_queue_cnic(bp, j) {
1385 struct bnx2x_fastpath *fp = &bp->fp[j];
1389 /* Activate BD ring */
1391 * this will generate an interrupt (to the TSTORM)
1392 * must only be done after chip is initialized
1394 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1399 void bnx2x_init_rx_rings(struct bnx2x *bp)
1401 int func = BP_FUNC(bp);
1405 /* Allocate TPA resources */
1406 for_each_eth_queue(bp, j) {
1407 struct bnx2x_fastpath *fp = &bp->fp[j];
1410 "mtu %d rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
1412 if (fp->mode != TPA_MODE_DISABLED) {
1413 /* Fill the per-aggregation pool */
1414 for (i = 0; i < MAX_AGG_QS(bp); i++) {
1415 struct bnx2x_agg_info *tpa_info =
1417 struct sw_rx_bd *first_buf =
1418 &tpa_info->first_buf;
1421 bnx2x_frag_alloc(fp, GFP_KERNEL);
1422 if (!first_buf->data) {
1423 BNX2X_ERR("Failed to allocate TPA skb pool for queue[%d] - disabling TPA on this queue!\n",
1425 bnx2x_free_tpa_pool(bp, fp, i);
1426 fp->mode = TPA_MODE_DISABLED;
1429 dma_unmap_addr_set(first_buf, mapping, 0);
1430 tpa_info->tpa_state = BNX2X_TPA_STOP;
1433 /* "next page" elements initialization */
1434 bnx2x_set_next_page_sgl(fp);
1436 /* set SGEs bit mask */
1437 bnx2x_init_sge_ring_bit_mask(fp);
1439 /* Allocate SGEs and initialize the ring elements */
1440 for (i = 0, ring_prod = 0;
1441 i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
1443 if (bnx2x_alloc_rx_sge(bp, fp, ring_prod,
1445 BNX2X_ERR("was only able to allocate %d rx sges\n",
1447 BNX2X_ERR("disabling TPA for queue[%d]\n",
1449 /* Cleanup already allocated elements */
1450 bnx2x_free_rx_sge_range(bp, fp,
1452 bnx2x_free_tpa_pool(bp, fp,
1454 fp->mode = TPA_MODE_DISABLED;
1458 ring_prod = NEXT_SGE_IDX(ring_prod);
1461 fp->rx_sge_prod = ring_prod;
1465 for_each_eth_queue(bp, j) {
1466 struct bnx2x_fastpath *fp = &bp->fp[j];
1470 /* Activate BD ring */
1472 * this will generate an interrupt (to the TSTORM)
1473 * must only be done after chip is initialized
1475 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1481 if (CHIP_IS_E1(bp)) {
1482 REG_WR(bp, BAR_USTRORM_INTMEM +
1483 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
1484 U64_LO(fp->rx_comp_mapping));
1485 REG_WR(bp, BAR_USTRORM_INTMEM +
1486 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
1487 U64_HI(fp->rx_comp_mapping));
1492 static void bnx2x_free_tx_skbs_queue(struct bnx2x_fastpath *fp)
1495 struct bnx2x *bp = fp->bp;
1497 for_each_cos_in_tx_queue(fp, cos) {
1498 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
1499 unsigned pkts_compl = 0, bytes_compl = 0;
1501 u16 sw_prod = txdata->tx_pkt_prod;
1502 u16 sw_cons = txdata->tx_pkt_cons;
1504 while (sw_cons != sw_prod) {
1505 bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
1506 &pkts_compl, &bytes_compl);
1510 netdev_tx_reset_queue(
1511 netdev_get_tx_queue(bp->dev,
1512 txdata->txq_index));
1516 static void bnx2x_free_tx_skbs_cnic(struct bnx2x *bp)
1520 for_each_tx_queue_cnic(bp, i) {
1521 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1525 static void bnx2x_free_tx_skbs(struct bnx2x *bp)
1529 for_each_eth_queue(bp, i) {
1530 bnx2x_free_tx_skbs_queue(&bp->fp[i]);
1534 static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
1536 struct bnx2x *bp = fp->bp;
1539 /* ring wasn't allocated */
1540 if (fp->rx_buf_ring == NULL)
1543 for (i = 0; i < NUM_RX_BD; i++) {
1544 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
1545 u8 *data = rx_buf->data;
1549 dma_unmap_single(&bp->pdev->dev,
1550 dma_unmap_addr(rx_buf, mapping),
1551 fp->rx_buf_size, DMA_FROM_DEVICE);
1553 rx_buf->data = NULL;
1554 bnx2x_frag_free(fp, data);
1558 static void bnx2x_free_rx_skbs_cnic(struct bnx2x *bp)
1562 for_each_rx_queue_cnic(bp, j) {
1563 bnx2x_free_rx_bds(&bp->fp[j]);
1567 static void bnx2x_free_rx_skbs(struct bnx2x *bp)
1571 for_each_eth_queue(bp, j) {
1572 struct bnx2x_fastpath *fp = &bp->fp[j];
1574 bnx2x_free_rx_bds(fp);
1576 if (fp->mode != TPA_MODE_DISABLED)
1577 bnx2x_free_tpa_pool(bp, fp, MAX_AGG_QS(bp));
1581 static void bnx2x_free_skbs_cnic(struct bnx2x *bp)
1583 bnx2x_free_tx_skbs_cnic(bp);
1584 bnx2x_free_rx_skbs_cnic(bp);
1587 void bnx2x_free_skbs(struct bnx2x *bp)
1589 bnx2x_free_tx_skbs(bp);
1590 bnx2x_free_rx_skbs(bp);
1593 void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
1595 /* load old values */
1596 u32 mf_cfg = bp->mf_config[BP_VN(bp)];
1598 if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
1599 /* leave all but MAX value */
1600 mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
1602 /* set new MAX value */
1603 mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
1604 & FUNC_MF_CFG_MAX_BW_MASK;
1606 bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
1611 * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1613 * @bp: driver handle
1614 * @nvecs: number of vectors to be released
1616 static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
1620 if (nvecs == offset)
1623 /* VFs don't have a default SB */
1625 free_irq(bp->msix_table[offset].vector, bp->dev);
1626 DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
1627 bp->msix_table[offset].vector);
1631 if (CNIC_SUPPORT(bp)) {
1632 if (nvecs == offset)
1637 for_each_eth_queue(bp, i) {
1638 if (nvecs == offset)
1640 DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq\n",
1641 i, bp->msix_table[offset].vector);
1643 free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
1647 void bnx2x_free_irq(struct bnx2x *bp)
1649 if (bp->flags & USING_MSIX_FLAG &&
1650 !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1651 int nvecs = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_SUPPORT(bp);
1653 /* vfs don't have a default status block */
1657 bnx2x_free_msix_irqs(bp, nvecs);
1659 free_irq(bp->dev->irq, bp->dev);
1663 int bnx2x_enable_msix(struct bnx2x *bp)
1665 int msix_vec = 0, i, rc;
1667 /* VFs don't have a default status block */
1669 bp->msix_table[msix_vec].entry = msix_vec;
1670 BNX2X_DEV_INFO("msix_table[0].entry = %d (slowpath)\n",
1671 bp->msix_table[0].entry);
1675 /* Cnic requires an msix vector for itself */
1676 if (CNIC_SUPPORT(bp)) {
1677 bp->msix_table[msix_vec].entry = msix_vec;
1678 BNX2X_DEV_INFO("msix_table[%d].entry = %d (CNIC)\n",
1679 msix_vec, bp->msix_table[msix_vec].entry);
1683 /* We need separate vectors for ETH queues only (not FCoE) */
1684 for_each_eth_queue(bp, i) {
1685 bp->msix_table[msix_vec].entry = msix_vec;
1686 BNX2X_DEV_INFO("msix_table[%d].entry = %d (fastpath #%u)\n",
1687 msix_vec, msix_vec, i);
1691 DP(BNX2X_MSG_SP, "about to request enable msix with %d vectors\n",
1694 rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0],
1695 BNX2X_MIN_MSIX_VEC_CNT(bp), msix_vec);
1697 * reconfigure number of tx/rx queues according to available
1700 if (rc == -ENOSPC) {
1701 /* Get by with single vector */
1702 rc = pci_enable_msix_range(bp->pdev, &bp->msix_table[0], 1, 1);
1704 BNX2X_DEV_INFO("Single MSI-X is not attainable rc %d\n",
1709 BNX2X_DEV_INFO("Using single MSI-X vector\n");
1710 bp->flags |= USING_SINGLE_MSIX_FLAG;
1712 BNX2X_DEV_INFO("set number of queues to 1\n");
1713 bp->num_ethernet_queues = 1;
1714 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1715 } else if (rc < 0) {
1716 BNX2X_DEV_INFO("MSI-X is not attainable rc %d\n", rc);
1718 } else if (rc < msix_vec) {
1719 /* how less vectors we will have? */
1720 int diff = msix_vec - rc;
1722 BNX2X_DEV_INFO("Trying to use less MSI-X vectors: %d\n", rc);
1725 * decrease number of queues by number of unallocated entries
1727 bp->num_ethernet_queues -= diff;
1728 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1730 BNX2X_DEV_INFO("New queue configuration set: %d\n",
1734 bp->flags |= USING_MSIX_FLAG;
1739 /* fall to INTx if not enough memory */
1741 bp->flags |= DISABLE_MSI_FLAG;
1746 static int bnx2x_req_msix_irqs(struct bnx2x *bp)
1748 int i, rc, offset = 0;
1750 /* no default status block for vf */
1752 rc = request_irq(bp->msix_table[offset++].vector,
1753 bnx2x_msix_sp_int, 0,
1754 bp->dev->name, bp->dev);
1756 BNX2X_ERR("request sp irq failed\n");
1761 if (CNIC_SUPPORT(bp))
1764 for_each_eth_queue(bp, i) {
1765 struct bnx2x_fastpath *fp = &bp->fp[i];
1766 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1769 rc = request_irq(bp->msix_table[offset].vector,
1770 bnx2x_msix_fp_int, 0, fp->name, fp);
1772 BNX2X_ERR("request fp #%d irq (%d) failed rc %d\n", i,
1773 bp->msix_table[offset].vector, rc);
1774 bnx2x_free_msix_irqs(bp, offset);
1781 i = BNX2X_NUM_ETH_QUEUES(bp);
1783 offset = 1 + CNIC_SUPPORT(bp);
1784 netdev_info(bp->dev,
1785 "using MSI-X IRQs: sp %d fp[%d] %d ... fp[%d] %d\n",
1786 bp->msix_table[0].vector,
1787 0, bp->msix_table[offset].vector,
1788 i - 1, bp->msix_table[offset + i - 1].vector);
1790 offset = CNIC_SUPPORT(bp);
1791 netdev_info(bp->dev,
1792 "using MSI-X IRQs: fp[%d] %d ... fp[%d] %d\n",
1793 0, bp->msix_table[offset].vector,
1794 i - 1, bp->msix_table[offset + i - 1].vector);
1799 int bnx2x_enable_msi(struct bnx2x *bp)
1803 rc = pci_enable_msi(bp->pdev);
1805 BNX2X_DEV_INFO("MSI is not attainable\n");
1808 bp->flags |= USING_MSI_FLAG;
1813 static int bnx2x_req_irq(struct bnx2x *bp)
1815 unsigned long flags;
1818 if (bp->flags & (USING_MSI_FLAG | USING_MSIX_FLAG))
1821 flags = IRQF_SHARED;
1823 if (bp->flags & USING_MSIX_FLAG)
1824 irq = bp->msix_table[0].vector;
1826 irq = bp->pdev->irq;
1828 return request_irq(irq, bnx2x_interrupt, flags, bp->dev->name, bp->dev);
1831 static int bnx2x_setup_irqs(struct bnx2x *bp)
1834 if (bp->flags & USING_MSIX_FLAG &&
1835 !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1836 rc = bnx2x_req_msix_irqs(bp);
1840 rc = bnx2x_req_irq(bp);
1842 BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
1845 if (bp->flags & USING_MSI_FLAG) {
1846 bp->dev->irq = bp->pdev->irq;
1847 netdev_info(bp->dev, "using MSI IRQ %d\n",
1850 if (bp->flags & USING_MSIX_FLAG) {
1851 bp->dev->irq = bp->msix_table[0].vector;
1852 netdev_info(bp->dev, "using MSIX IRQ %d\n",
1860 static void bnx2x_napi_enable_cnic(struct bnx2x *bp)
1864 for_each_rx_queue_cnic(bp, i) {
1865 napi_enable(&bnx2x_fp(bp, i, napi));
1869 static void bnx2x_napi_enable(struct bnx2x *bp)
1873 for_each_eth_queue(bp, i) {
1874 napi_enable(&bnx2x_fp(bp, i, napi));
1878 static void bnx2x_napi_disable_cnic(struct bnx2x *bp)
1882 for_each_rx_queue_cnic(bp, i) {
1883 napi_disable(&bnx2x_fp(bp, i, napi));
1887 static void bnx2x_napi_disable(struct bnx2x *bp)
1891 for_each_eth_queue(bp, i) {
1892 napi_disable(&bnx2x_fp(bp, i, napi));
1896 void bnx2x_netif_start(struct bnx2x *bp)
1898 if (netif_running(bp->dev)) {
1899 bnx2x_napi_enable(bp);
1900 if (CNIC_LOADED(bp))
1901 bnx2x_napi_enable_cnic(bp);
1902 bnx2x_int_enable(bp);
1903 if (bp->state == BNX2X_STATE_OPEN)
1904 netif_tx_wake_all_queues(bp->dev);
1908 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
1910 bnx2x_int_disable_sync(bp, disable_hw);
1911 bnx2x_napi_disable(bp);
1912 if (CNIC_LOADED(bp))
1913 bnx2x_napi_disable_cnic(bp);
1916 u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb,
1917 struct net_device *sb_dev)
1919 struct bnx2x *bp = netdev_priv(dev);
1921 if (CNIC_LOADED(bp) && !NO_FCOE(bp)) {
1922 struct ethhdr *hdr = (struct ethhdr *)skb->data;
1923 u16 ether_type = ntohs(hdr->h_proto);
1925 /* Skip VLAN tag if present */
1926 if (ether_type == ETH_P_8021Q) {
1927 struct vlan_ethhdr *vhdr =
1928 (struct vlan_ethhdr *)skb->data;
1930 ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
1933 /* If ethertype is FCoE or FIP - use FCoE ring */
1934 if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
1935 return bnx2x_fcoe_tx(bp, txq_index);
1938 /* select a non-FCoE queue */
1939 return netdev_pick_tx(dev, skb, NULL) %
1940 (BNX2X_NUM_ETH_QUEUES(bp) * bp->max_cos);
1943 void bnx2x_set_num_queues(struct bnx2x *bp)
1946 bp->num_ethernet_queues = bnx2x_calc_num_queues(bp);
1948 /* override in STORAGE SD modes */
1949 if (IS_MF_STORAGE_ONLY(bp))
1950 bp->num_ethernet_queues = 1;
1952 /* Add special queues */
1953 bp->num_cnic_queues = CNIC_SUPPORT(bp); /* For FCOE */
1954 bp->num_queues = bp->num_ethernet_queues + bp->num_cnic_queues;
1956 BNX2X_DEV_INFO("set number of queues to %d\n", bp->num_queues);
1960 * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
1962 * @bp: Driver handle
1963 * @include_cnic: handle cnic case
1965 * We currently support for at most 16 Tx queues for each CoS thus we will
1966 * allocate a multiple of 16 for ETH L2 rings according to the value of the
1969 * If there is an FCoE L2 queue the appropriate Tx queue will have the next
1970 * index after all ETH L2 indices.
1972 * If the actual number of Tx queues (for each CoS) is less than 16 then there
1973 * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
1974 * 16..31,...) with indices that are not coupled with any real Tx queue.
1976 * The proper configuration of skb->queue_mapping is handled by
1977 * bnx2x_select_queue() and __skb_tx_hash().
1979 * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
1980 * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
1982 static int bnx2x_set_real_num_queues(struct bnx2x *bp, int include_cnic)
1986 tx = BNX2X_NUM_ETH_QUEUES(bp) * bp->max_cos;
1987 rx = BNX2X_NUM_ETH_QUEUES(bp);
1989 /* account for fcoe queue */
1990 if (include_cnic && !NO_FCOE(bp)) {
1995 rc = netif_set_real_num_tx_queues(bp->dev, tx);
1997 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
2000 rc = netif_set_real_num_rx_queues(bp->dev, rx);
2002 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
2006 DP(NETIF_MSG_IFUP, "Setting real num queues to (tx, rx) (%d, %d)\n",
2012 static void bnx2x_set_rx_buf_size(struct bnx2x *bp)
2016 for_each_queue(bp, i) {
2017 struct bnx2x_fastpath *fp = &bp->fp[i];
2020 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
2023 * Although there are no IP frames expected to arrive to
2024 * this ring we still want to add an
2025 * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
2028 mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
2031 fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START +
2032 IP_HEADER_ALIGNMENT_PADDING +
2035 BNX2X_FW_RX_ALIGN_END;
2036 fp->rx_buf_size = SKB_DATA_ALIGN(fp->rx_buf_size);
2037 /* Note : rx_buf_size doesn't take into account NET_SKB_PAD */
2038 if (fp->rx_buf_size + NET_SKB_PAD <= PAGE_SIZE)
2039 fp->rx_frag_size = fp->rx_buf_size + NET_SKB_PAD;
2041 fp->rx_frag_size = 0;
2045 static int bnx2x_init_rss(struct bnx2x *bp)
2048 u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
2050 /* Prepare the initial contents for the indirection table if RSS is
2053 for (i = 0; i < sizeof(bp->rss_conf_obj.ind_table); i++)
2054 bp->rss_conf_obj.ind_table[i] =
2056 ethtool_rxfh_indir_default(i, num_eth_queues);
2059 * For 57710 and 57711 SEARCHER configuration (rss_keys) is
2060 * per-port, so if explicit configuration is needed , do it only
2063 * For 57712 and newer on the other hand it's a per-function
2066 return bnx2x_config_rss_eth(bp, bp->port.pmf || !CHIP_IS_E1x(bp));
2069 int bnx2x_rss(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
2070 bool config_hash, bool enable)
2072 struct bnx2x_config_rss_params params = {NULL};
2074 /* Although RSS is meaningless when there is a single HW queue we
2075 * still need it enabled in order to have HW Rx hash generated.
2077 * if (!is_eth_multi(bp))
2078 * bp->multi_mode = ETH_RSS_MODE_DISABLED;
2081 params.rss_obj = rss_obj;
2083 __set_bit(RAMROD_COMP_WAIT, ¶ms.ramrod_flags);
2086 __set_bit(BNX2X_RSS_MODE_REGULAR, ¶ms.rss_flags);
2088 /* RSS configuration */
2089 __set_bit(BNX2X_RSS_IPV4, ¶ms.rss_flags);
2090 __set_bit(BNX2X_RSS_IPV4_TCP, ¶ms.rss_flags);
2091 __set_bit(BNX2X_RSS_IPV6, ¶ms.rss_flags);
2092 __set_bit(BNX2X_RSS_IPV6_TCP, ¶ms.rss_flags);
2093 if (rss_obj->udp_rss_v4)
2094 __set_bit(BNX2X_RSS_IPV4_UDP, ¶ms.rss_flags);
2095 if (rss_obj->udp_rss_v6)
2096 __set_bit(BNX2X_RSS_IPV6_UDP, ¶ms.rss_flags);
2098 if (!CHIP_IS_E1x(bp)) {
2099 /* valid only for TUNN_MODE_VXLAN tunnel mode */
2100 __set_bit(BNX2X_RSS_IPV4_VXLAN, ¶ms.rss_flags);
2101 __set_bit(BNX2X_RSS_IPV6_VXLAN, ¶ms.rss_flags);
2103 /* valid only for TUNN_MODE_GRE tunnel mode */
2104 __set_bit(BNX2X_RSS_TUNN_INNER_HDRS, ¶ms.rss_flags);
2107 __set_bit(BNX2X_RSS_MODE_DISABLED, ¶ms.rss_flags);
2111 params.rss_result_mask = MULTI_MASK;
2113 memcpy(params.ind_table, rss_obj->ind_table, sizeof(params.ind_table));
2117 netdev_rss_key_fill(params.rss_key, T_ETH_RSS_KEY * 4);
2118 __set_bit(BNX2X_RSS_SET_SRCH, ¶ms.rss_flags);
2122 return bnx2x_config_rss(bp, ¶ms);
2124 return bnx2x_vfpf_config_rss(bp, ¶ms);
2127 static int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
2129 struct bnx2x_func_state_params func_params = {NULL};
2131 /* Prepare parameters for function state transitions */
2132 __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
2134 func_params.f_obj = &bp->func_obj;
2135 func_params.cmd = BNX2X_F_CMD_HW_INIT;
2137 func_params.params.hw_init.load_phase = load_code;
2139 return bnx2x_func_state_change(bp, &func_params);
2143 * Cleans the object that have internal lists without sending
2144 * ramrods. Should be run when interrupts are disabled.
2146 void bnx2x_squeeze_objects(struct bnx2x *bp)
2149 unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
2150 struct bnx2x_mcast_ramrod_params rparam = {NULL};
2151 struct bnx2x_vlan_mac_obj *mac_obj = &bp->sp_objs->mac_obj;
2153 /***************** Cleanup MACs' object first *************************/
2155 /* Wait for completion of requested */
2156 __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
2157 /* Perform a dry cleanup */
2158 __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
2160 /* Clean ETH primary MAC */
2161 __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
2162 rc = mac_obj->delete_all(bp, &bp->sp_objs->mac_obj, &vlan_mac_flags,
2165 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
2167 /* Cleanup UC list */
2169 __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
2170 rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
2173 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
2175 /***************** Now clean mcast object *****************************/
2176 rparam.mcast_obj = &bp->mcast_obj;
2177 __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
2179 /* Add a DEL command... - Since we're doing a driver cleanup only,
2180 * we take a lock surrounding both the initial send and the CONTs,
2181 * as we don't want a true completion to disrupt us in the middle.
2183 netif_addr_lock_bh(bp->dev);
2184 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
2186 BNX2X_ERR("Failed to add a new DEL command to a multi-cast object: %d\n",
2189 /* ...and wait until all pending commands are cleared */
2190 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2193 BNX2X_ERR("Failed to clean multi-cast object: %d\n",
2195 netif_addr_unlock_bh(bp->dev);
2199 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
2201 netif_addr_unlock_bh(bp->dev);
2204 #ifndef BNX2X_STOP_ON_ERROR
2205 #define LOAD_ERROR_EXIT(bp, label) \
2207 (bp)->state = BNX2X_STATE_ERROR; \
2211 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2213 bp->cnic_loaded = false; \
2216 #else /*BNX2X_STOP_ON_ERROR*/
2217 #define LOAD_ERROR_EXIT(bp, label) \
2219 (bp)->state = BNX2X_STATE_ERROR; \
2223 #define LOAD_ERROR_EXIT_CNIC(bp, label) \
2225 bp->cnic_loaded = false; \
2229 #endif /*BNX2X_STOP_ON_ERROR*/
2231 static void bnx2x_free_fw_stats_mem(struct bnx2x *bp)
2233 BNX2X_PCI_FREE(bp->fw_stats, bp->fw_stats_mapping,
2234 bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2238 static int bnx2x_alloc_fw_stats_mem(struct bnx2x *bp)
2240 int num_groups, vf_headroom = 0;
2241 int is_fcoe_stats = NO_FCOE(bp) ? 0 : 1;
2243 /* number of queues for statistics is number of eth queues + FCoE */
2244 u8 num_queue_stats = BNX2X_NUM_ETH_QUEUES(bp) + is_fcoe_stats;
2246 /* Total number of FW statistics requests =
2247 * 1 for port stats + 1 for PF stats + potential 2 for FCoE (fcoe proper
2248 * and fcoe l2 queue) stats + num of queues (which includes another 1
2249 * for fcoe l2 queue if applicable)
2251 bp->fw_stats_num = 2 + is_fcoe_stats + num_queue_stats;
2253 /* vf stats appear in the request list, but their data is allocated by
2254 * the VFs themselves. We don't include them in the bp->fw_stats_num as
2255 * it is used to determine where to place the vf stats queries in the
2259 vf_headroom = bnx2x_vf_headroom(bp);
2261 /* Request is built from stats_query_header and an array of
2262 * stats_query_cmd_group each of which contains
2263 * STATS_QUERY_CMD_COUNT rules. The real number or requests is
2264 * configured in the stats_query_header.
2267 (((bp->fw_stats_num + vf_headroom) / STATS_QUERY_CMD_COUNT) +
2268 (((bp->fw_stats_num + vf_headroom) % STATS_QUERY_CMD_COUNT) ?
2271 DP(BNX2X_MSG_SP, "stats fw_stats_num %d, vf headroom %d, num_groups %d\n",
2272 bp->fw_stats_num, vf_headroom, num_groups);
2273 bp->fw_stats_req_sz = sizeof(struct stats_query_header) +
2274 num_groups * sizeof(struct stats_query_cmd_group);
2276 /* Data for statistics requests + stats_counter
2277 * stats_counter holds per-STORM counters that are incremented
2278 * when STORM has finished with the current request.
2279 * memory for FCoE offloaded statistics are counted anyway,
2280 * even if they will not be sent.
2281 * VF stats are not accounted for here as the data of VF stats is stored
2282 * in memory allocated by the VF, not here.
2284 bp->fw_stats_data_sz = sizeof(struct per_port_stats) +
2285 sizeof(struct per_pf_stats) +
2286 sizeof(struct fcoe_statistics_params) +
2287 sizeof(struct per_queue_stats) * num_queue_stats +
2288 sizeof(struct stats_counter);
2290 bp->fw_stats = BNX2X_PCI_ALLOC(&bp->fw_stats_mapping,
2291 bp->fw_stats_data_sz + bp->fw_stats_req_sz);
2296 bp->fw_stats_req = (struct bnx2x_fw_stats_req *)bp->fw_stats;
2297 bp->fw_stats_req_mapping = bp->fw_stats_mapping;
2298 bp->fw_stats_data = (struct bnx2x_fw_stats_data *)
2299 ((u8 *)bp->fw_stats + bp->fw_stats_req_sz);
2300 bp->fw_stats_data_mapping = bp->fw_stats_mapping +
2301 bp->fw_stats_req_sz;
2303 DP(BNX2X_MSG_SP, "statistics request base address set to %x %x\n",
2304 U64_HI(bp->fw_stats_req_mapping),
2305 U64_LO(bp->fw_stats_req_mapping));
2306 DP(BNX2X_MSG_SP, "statistics data base address set to %x %x\n",
2307 U64_HI(bp->fw_stats_data_mapping),
2308 U64_LO(bp->fw_stats_data_mapping));
2312 bnx2x_free_fw_stats_mem(bp);
2313 BNX2X_ERR("Can't allocate FW stats memory\n");
2317 /* send load request to mcp and analyze response */
2318 static int bnx2x_nic_load_request(struct bnx2x *bp, u32 *load_code)
2324 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
2325 DRV_MSG_SEQ_NUMBER_MASK);
2326 BNX2X_DEV_INFO("fw_seq 0x%08x\n", bp->fw_seq);
2328 /* Get current FW pulse sequence */
2329 bp->fw_drv_pulse_wr_seq =
2330 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb) &
2331 DRV_PULSE_SEQ_MASK);
2332 BNX2X_DEV_INFO("drv_pulse 0x%x\n", bp->fw_drv_pulse_wr_seq);
2334 param = DRV_MSG_CODE_LOAD_REQ_WITH_LFA;
2336 if (IS_MF_SD(bp) && bnx2x_port_after_undi(bp))
2337 param |= DRV_MSG_CODE_LOAD_REQ_FORCE_LFA;
2340 (*load_code) = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, param);
2342 /* if mcp fails to respond we must abort */
2343 if (!(*load_code)) {
2344 BNX2X_ERR("MCP response failure, aborting\n");
2348 /* If mcp refused (e.g. other port is in diagnostic mode) we
2351 if ((*load_code) == FW_MSG_CODE_DRV_LOAD_REFUSED) {
2352 BNX2X_ERR("MCP refused load request, aborting\n");
2358 /* check whether another PF has already loaded FW to chip. In
2359 * virtualized environments a pf from another VM may have already
2360 * initialized the device including loading FW
2362 int bnx2x_compare_fw_ver(struct bnx2x *bp, u32 load_code, bool print_err)
2364 /* is another pf loaded on this engine? */
2365 if (load_code != FW_MSG_CODE_DRV_LOAD_COMMON_CHIP &&
2366 load_code != FW_MSG_CODE_DRV_LOAD_COMMON) {
2367 /* build my FW version dword */
2368 u32 my_fw = (bp->fw_major) + (bp->fw_minor << 8) +
2369 (bp->fw_rev << 16) + (bp->fw_eng << 24);
2371 /* read loaded FW from chip */
2372 u32 loaded_fw = REG_RD(bp, XSEM_REG_PRAM);
2374 DP(BNX2X_MSG_SP, "loaded fw %x, my fw %x\n",
2377 /* abort nic load if version mismatch */
2378 if (my_fw != loaded_fw) {
2380 BNX2X_ERR("bnx2x with FW %x was already loaded which mismatches my %x FW. Aborting\n",
2383 BNX2X_DEV_INFO("bnx2x with FW %x was already loaded which mismatches my %x FW, possibly due to MF UNDI\n",
2391 /* returns the "mcp load_code" according to global load_count array */
2392 static int bnx2x_nic_load_no_mcp(struct bnx2x *bp, int port)
2394 int path = BP_PATH(bp);
2396 DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n",
2397 path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2398 bnx2x_load_count[path][2]);
2399 bnx2x_load_count[path][0]++;
2400 bnx2x_load_count[path][1 + port]++;
2401 DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n",
2402 path, bnx2x_load_count[path][0], bnx2x_load_count[path][1],
2403 bnx2x_load_count[path][2]);
2404 if (bnx2x_load_count[path][0] == 1)
2405 return FW_MSG_CODE_DRV_LOAD_COMMON;
2406 else if (bnx2x_load_count[path][1 + port] == 1)
2407 return FW_MSG_CODE_DRV_LOAD_PORT;
2409 return FW_MSG_CODE_DRV_LOAD_FUNCTION;
2412 /* mark PMF if applicable */
2413 static void bnx2x_nic_load_pmf(struct bnx2x *bp, u32 load_code)
2415 if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2416 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
2417 (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
2419 /* We need the barrier to ensure the ordering between the
2420 * writing to bp->port.pmf here and reading it from the
2421 * bnx2x_periodic_task().
2428 DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
2431 static void bnx2x_nic_load_afex_dcc(struct bnx2x *bp, int load_code)
2433 if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2434 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
2435 (bp->common.shmem2_base)) {
2436 if (SHMEM2_HAS(bp, dcc_support))
2437 SHMEM2_WR(bp, dcc_support,
2438 (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
2439 SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
2440 if (SHMEM2_HAS(bp, afex_driver_support))
2441 SHMEM2_WR(bp, afex_driver_support,
2442 SHMEM_AFEX_SUPPORTED_VERSION_ONE);
2445 /* Set AFEX default VLAN tag to an invalid value */
2446 bp->afex_def_vlan_tag = -1;
2450 * bnx2x_bz_fp - zero content of the fastpath structure.
2452 * @bp: driver handle
2453 * @index: fastpath index to be zeroed
2455 * Makes sure the contents of the bp->fp[index].napi is kept
2458 static void bnx2x_bz_fp(struct bnx2x *bp, int index)
2460 struct bnx2x_fastpath *fp = &bp->fp[index];
2462 struct napi_struct orig_napi = fp->napi;
2463 struct bnx2x_agg_info *orig_tpa_info = fp->tpa_info;
2465 /* bzero bnx2x_fastpath contents */
2467 memset(fp->tpa_info, 0, ETH_MAX_AGGREGATION_QUEUES_E1H_E2 *
2468 sizeof(struct bnx2x_agg_info));
2469 memset(fp, 0, sizeof(*fp));
2471 /* Restore the NAPI object as it has been already initialized */
2472 fp->napi = orig_napi;
2473 fp->tpa_info = orig_tpa_info;
2477 fp->max_cos = bp->max_cos;
2479 /* Special queues support only one CoS */
2482 /* Init txdata pointers */
2484 fp->txdata_ptr[0] = &bp->bnx2x_txq[FCOE_TXQ_IDX(bp)];
2486 for_each_cos_in_tx_queue(fp, cos)
2487 fp->txdata_ptr[cos] = &bp->bnx2x_txq[cos *
2488 BNX2X_NUM_ETH_QUEUES(bp) + index];
2490 /* set the tpa flag for each queue. The tpa flag determines the queue
2491 * minimal size so it must be set prior to queue memory allocation
2493 if (bp->dev->features & NETIF_F_LRO)
2494 fp->mode = TPA_MODE_LRO;
2495 else if (bp->dev->features & NETIF_F_GRO_HW)
2496 fp->mode = TPA_MODE_GRO;
2498 fp->mode = TPA_MODE_DISABLED;
2500 /* We don't want TPA if it's disabled in bp
2501 * or if this is an FCoE L2 ring.
2503 if (bp->disable_tpa || IS_FCOE_FP(fp))
2504 fp->mode = TPA_MODE_DISABLED;
2507 void bnx2x_set_os_driver_state(struct bnx2x *bp, u32 state)
2511 if (!IS_MF_BD(bp) || !SHMEM2_HAS(bp, os_driver_state) || IS_VF(bp))
2514 cur = SHMEM2_RD(bp, os_driver_state[BP_FW_MB_IDX(bp)]);
2515 DP(NETIF_MSG_IFUP, "Driver state %08x-->%08x\n",
2518 SHMEM2_WR(bp, os_driver_state[BP_FW_MB_IDX(bp)], state);
2521 int bnx2x_load_cnic(struct bnx2x *bp)
2523 int i, rc, port = BP_PORT(bp);
2525 DP(NETIF_MSG_IFUP, "Starting CNIC-related load\n");
2527 mutex_init(&bp->cnic_mutex);
2530 rc = bnx2x_alloc_mem_cnic(bp);
2532 BNX2X_ERR("Unable to allocate bp memory for cnic\n");
2533 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2537 rc = bnx2x_alloc_fp_mem_cnic(bp);
2539 BNX2X_ERR("Unable to allocate memory for cnic fps\n");
2540 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2543 /* Update the number of queues with the cnic queues */
2544 rc = bnx2x_set_real_num_queues(bp, 1);
2546 BNX2X_ERR("Unable to set real_num_queues including cnic\n");
2547 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic0);
2550 /* Add all CNIC NAPI objects */
2551 bnx2x_add_all_napi_cnic(bp);
2552 DP(NETIF_MSG_IFUP, "cnic napi added\n");
2553 bnx2x_napi_enable_cnic(bp);
2555 rc = bnx2x_init_hw_func_cnic(bp);
2557 LOAD_ERROR_EXIT_CNIC(bp, load_error_cnic1);
2559 bnx2x_nic_init_cnic(bp);
2562 /* Enable Timer scan */
2563 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
2565 /* setup cnic queues */
2566 for_each_cnic_queue(bp, i) {
2567 rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
2569 BNX2X_ERR("Queue setup failed\n");
2570 LOAD_ERROR_EXIT(bp, load_error_cnic2);
2575 /* Initialize Rx filter. */
2576 bnx2x_set_rx_mode_inner(bp);
2578 /* re-read iscsi info */
2579 bnx2x_get_iscsi_info(bp);
2580 bnx2x_setup_cnic_irq_info(bp);
2581 bnx2x_setup_cnic_info(bp);
2582 bp->cnic_loaded = true;
2583 if (bp->state == BNX2X_STATE_OPEN)
2584 bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
2586 DP(NETIF_MSG_IFUP, "Ending successfully CNIC-related load\n");
2590 #ifndef BNX2X_STOP_ON_ERROR
2592 /* Disable Timer scan */
2593 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
2596 bnx2x_napi_disable_cnic(bp);
2597 /* Update the number of queues without the cnic queues */
2598 if (bnx2x_set_real_num_queues(bp, 0))
2599 BNX2X_ERR("Unable to set real_num_queues not including cnic\n");
2601 BNX2X_ERR("CNIC-related load failed\n");
2602 bnx2x_free_fp_mem_cnic(bp);
2603 bnx2x_free_mem_cnic(bp);
2605 #endif /* ! BNX2X_STOP_ON_ERROR */
2608 /* must be called with rtnl_lock */
2609 int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
2611 int port = BP_PORT(bp);
2612 int i, rc = 0, load_code = 0;
2614 DP(NETIF_MSG_IFUP, "Starting NIC load\n");
2616 "CNIC is %s\n", CNIC_ENABLED(bp) ? "enabled" : "disabled");
2618 #ifdef BNX2X_STOP_ON_ERROR
2619 if (unlikely(bp->panic)) {
2620 BNX2X_ERR("Can't load NIC when there is panic\n");
2625 bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
2627 /* zero the structure w/o any lock, before SP handler is initialized */
2628 memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
2629 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
2630 &bp->last_reported_link.link_report_flags);
2633 /* must be called before memory allocation and HW init */
2634 bnx2x_ilt_set_info(bp);
2637 * Zero fastpath structures preserving invariants like napi, which are
2638 * allocated only once, fp index, max_cos, bp pointer.
2639 * Also set fp->mode and txdata_ptr.
2641 DP(NETIF_MSG_IFUP, "num queues: %d", bp->num_queues);
2642 for_each_queue(bp, i)
2644 memset(bp->bnx2x_txq, 0, (BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS +
2645 bp->num_cnic_queues) *
2646 sizeof(struct bnx2x_fp_txdata));
2648 bp->fcoe_init = false;
2650 /* Set the receive queues buffer size */
2651 bnx2x_set_rx_buf_size(bp);
2654 rc = bnx2x_alloc_mem(bp);
2656 BNX2X_ERR("Unable to allocate bp memory\n");
2661 /* need to be done after alloc mem, since it's self adjusting to amount
2662 * of memory available for RSS queues
2664 rc = bnx2x_alloc_fp_mem(bp);
2666 BNX2X_ERR("Unable to allocate memory for fps\n");
2667 LOAD_ERROR_EXIT(bp, load_error0);
2670 /* Allocated memory for FW statistics */
2671 rc = bnx2x_alloc_fw_stats_mem(bp);
2673 LOAD_ERROR_EXIT(bp, load_error0);
2675 /* request pf to initialize status blocks */
2677 rc = bnx2x_vfpf_init(bp);
2679 LOAD_ERROR_EXIT(bp, load_error0);
2682 /* As long as bnx2x_alloc_mem() may possibly update
2683 * bp->num_queues, bnx2x_set_real_num_queues() should always
2684 * come after it. At this stage cnic queues are not counted.
2686 rc = bnx2x_set_real_num_queues(bp, 0);
2688 BNX2X_ERR("Unable to set real_num_queues\n");
2689 LOAD_ERROR_EXIT(bp, load_error0);
2692 /* configure multi cos mappings in kernel.
2693 * this configuration may be overridden by a multi class queue
2694 * discipline or by a dcbx negotiation result.
2696 bnx2x_setup_tc(bp->dev, bp->max_cos);
2698 /* Add all NAPI objects */
2699 bnx2x_add_all_napi(bp);
2700 DP(NETIF_MSG_IFUP, "napi added\n");
2701 bnx2x_napi_enable(bp);
2704 /* set pf load just before approaching the MCP */
2705 bnx2x_set_pf_load(bp);
2707 /* if mcp exists send load request and analyze response */
2708 if (!BP_NOMCP(bp)) {
2709 /* attempt to load pf */
2710 rc = bnx2x_nic_load_request(bp, &load_code);
2712 LOAD_ERROR_EXIT(bp, load_error1);
2714 /* what did mcp say? */
2715 rc = bnx2x_compare_fw_ver(bp, load_code, true);
2717 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2718 LOAD_ERROR_EXIT(bp, load_error2);
2721 load_code = bnx2x_nic_load_no_mcp(bp, port);
2724 /* mark pmf if applicable */
2725 bnx2x_nic_load_pmf(bp, load_code);
2727 /* Init Function state controlling object */
2728 bnx2x__init_func_obj(bp);
2731 rc = bnx2x_init_hw(bp, load_code);
2733 BNX2X_ERR("HW init failed, aborting\n");
2734 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2735 LOAD_ERROR_EXIT(bp, load_error2);
2739 bnx2x_pre_irq_nic_init(bp);
2741 /* Connect to IRQs */
2742 rc = bnx2x_setup_irqs(bp);
2744 BNX2X_ERR("setup irqs failed\n");
2746 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2747 LOAD_ERROR_EXIT(bp, load_error2);
2750 /* Init per-function objects */
2752 /* Setup NIC internals and enable interrupts */
2753 bnx2x_post_irq_nic_init(bp, load_code);
2755 bnx2x_init_bp_objs(bp);
2756 bnx2x_iov_nic_init(bp);
2758 /* Set AFEX default VLAN tag to an invalid value */
2759 bp->afex_def_vlan_tag = -1;
2760 bnx2x_nic_load_afex_dcc(bp, load_code);
2761 bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
2762 rc = bnx2x_func_start(bp);
2764 BNX2X_ERR("Function start failed!\n");
2765 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2767 LOAD_ERROR_EXIT(bp, load_error3);
2770 /* Send LOAD_DONE command to MCP */
2771 if (!BP_NOMCP(bp)) {
2772 load_code = bnx2x_fw_command(bp,
2773 DRV_MSG_CODE_LOAD_DONE, 0);
2775 BNX2X_ERR("MCP response failure, aborting\n");
2777 LOAD_ERROR_EXIT(bp, load_error3);
2781 /* initialize FW coalescing state machines in RAM */
2782 bnx2x_update_coalesce(bp);
2785 /* setup the leading queue */
2786 rc = bnx2x_setup_leading(bp);
2788 BNX2X_ERR("Setup leading failed!\n");
2789 LOAD_ERROR_EXIT(bp, load_error3);
2792 /* set up the rest of the queues */
2793 for_each_nondefault_eth_queue(bp, i) {
2795 rc = bnx2x_setup_queue(bp, &bp->fp[i], false);
2797 rc = bnx2x_vfpf_setup_q(bp, &bp->fp[i], false);
2799 BNX2X_ERR("Queue %d setup failed\n", i);
2800 LOAD_ERROR_EXIT(bp, load_error3);
2805 rc = bnx2x_init_rss(bp);
2807 BNX2X_ERR("PF RSS init failed\n");
2808 LOAD_ERROR_EXIT(bp, load_error3);
2811 /* Now when Clients are configured we are ready to work */
2812 bp->state = BNX2X_STATE_OPEN;
2814 /* Configure a ucast MAC */
2816 rc = bnx2x_set_eth_mac(bp, true);
2818 rc = bnx2x_vfpf_config_mac(bp, bp->dev->dev_addr, bp->fp->index,
2821 BNX2X_ERR("Setting Ethernet MAC failed\n");
2822 LOAD_ERROR_EXIT(bp, load_error3);
2825 if (IS_PF(bp) && bp->pending_max) {
2826 bnx2x_update_max_mf_config(bp, bp->pending_max);
2827 bp->pending_max = 0;
2830 bp->force_link_down = false;
2832 rc = bnx2x_initial_phy_init(bp, load_mode);
2834 LOAD_ERROR_EXIT(bp, load_error3);
2836 bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_BOOT_FROM_SAN;
2838 /* Start fast path */
2840 /* Re-configure vlan filters */
2841 rc = bnx2x_vlan_reconfigure_vid(bp);
2843 LOAD_ERROR_EXIT(bp, load_error3);
2845 /* Initialize Rx filter. */
2846 bnx2x_set_rx_mode_inner(bp);
2848 if (bp->flags & PTP_SUPPORTED) {
2849 bnx2x_register_phc(bp);
2851 bnx2x_configure_ptp_filters(bp);
2854 switch (load_mode) {
2856 /* Tx queue should be only re-enabled */
2857 netif_tx_wake_all_queues(bp->dev);
2861 netif_tx_start_all_queues(bp->dev);
2862 smp_mb__after_atomic();
2866 case LOAD_LOOPBACK_EXT:
2867 bp->state = BNX2X_STATE_DIAG;
2875 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_PORT_MASK, 0);
2877 bnx2x__link_status_update(bp);
2879 /* start the timer */
2880 mod_timer(&bp->timer, jiffies + bp->current_interval);
2882 if (CNIC_ENABLED(bp))
2883 bnx2x_load_cnic(bp);
2886 bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_GET_DRV_VERSION, 0);
2888 if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
2889 /* mark driver is loaded in shmem2 */
2891 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2892 val &= ~DRV_FLAGS_MTU_MASK;
2893 val |= (bp->dev->mtu << DRV_FLAGS_MTU_SHIFT);
2894 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2895 val | DRV_FLAGS_CAPABILITIES_LOADED_SUPPORTED |
2896 DRV_FLAGS_CAPABILITIES_LOADED_L2);
2899 /* Wait for all pending SP commands to complete */
2900 if (IS_PF(bp) && !bnx2x_wait_sp_comp(bp, ~0x0UL)) {
2901 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
2902 bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
2906 /* Update driver data for On-Chip MFW dump. */
2908 bnx2x_update_mfw_dump(bp);
2910 /* If PMF - send ADMIN DCBX msg to MFW to initiate DCBX FSM */
2911 if (bp->port.pmf && (bp->state != BNX2X_STATE_DIAG))
2912 bnx2x_dcbx_init(bp, false);
2914 if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2915 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_ACTIVE);
2917 DP(NETIF_MSG_IFUP, "Ending successfully NIC load\n");
2921 #ifndef BNX2X_STOP_ON_ERROR
2924 bnx2x_int_disable_sync(bp, 1);
2926 /* Clean queueable objects */
2927 bnx2x_squeeze_objects(bp);
2930 /* Free SKBs, SGEs, TPA pool and driver internals */
2931 bnx2x_free_skbs(bp);
2932 for_each_rx_queue(bp, i)
2933 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2938 if (IS_PF(bp) && !BP_NOMCP(bp)) {
2939 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
2940 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
2945 bnx2x_napi_disable(bp);
2946 bnx2x_del_all_napi(bp);
2948 /* clear pf_load status, as it was already set */
2950 bnx2x_clear_pf_load(bp);
2952 bnx2x_free_fw_stats_mem(bp);
2953 bnx2x_free_fp_mem(bp);
2957 #endif /* ! BNX2X_STOP_ON_ERROR */
2960 int bnx2x_drain_tx_queues(struct bnx2x *bp)
2964 /* Wait until tx fastpath tasks complete */
2965 for_each_tx_queue(bp, i) {
2966 struct bnx2x_fastpath *fp = &bp->fp[i];
2968 for_each_cos_in_tx_queue(fp, cos)
2969 rc = bnx2x_clean_tx_queue(bp, fp->txdata_ptr[cos]);
2976 /* must be called with rtnl_lock */
2977 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode, bool keep_link)
2980 bool global = false;
2982 DP(NETIF_MSG_IFUP, "Starting NIC unload\n");
2984 if (!IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp))
2985 bnx2x_set_os_driver_state(bp, OS_DRIVER_STATE_DISABLED);
2987 /* mark driver is unloaded in shmem2 */
2988 if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
2990 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2991 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2992 val & ~DRV_FLAGS_CAPABILITIES_LOADED_L2);
2995 if (IS_PF(bp) && bp->recovery_state != BNX2X_RECOVERY_DONE &&
2996 (bp->state == BNX2X_STATE_CLOSED ||
2997 bp->state == BNX2X_STATE_ERROR)) {
2998 /* We can get here if the driver has been unloaded
2999 * during parity error recovery and is either waiting for a
3000 * leader to complete or for other functions to unload and
3001 * then ifdown has been issued. In this case we want to
3002 * unload and let other functions to complete a recovery
3005 bp->recovery_state = BNX2X_RECOVERY_DONE;
3007 bnx2x_release_leader_lock(bp);
3010 DP(NETIF_MSG_IFDOWN, "Releasing a leadership...\n");
3011 BNX2X_ERR("Can't unload in closed or error state\n");
3015 /* Nothing to do during unload if previous bnx2x_nic_load()
3016 * have not completed successfully - all resources are released.
3018 * we can get here only after unsuccessful ndo_* callback, during which
3019 * dev->IFF_UP flag is still on.
3021 if (bp->state == BNX2X_STATE_CLOSED || bp->state == BNX2X_STATE_ERROR)
3024 /* It's important to set the bp->state to the value different from
3025 * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
3026 * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
3028 bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
3031 /* indicate to VFs that the PF is going down */
3032 bnx2x_iov_channel_down(bp);
3034 if (CNIC_LOADED(bp))
3035 bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
3038 bnx2x_tx_disable(bp);
3039 netdev_reset_tc(bp->dev);
3041 bp->rx_mode = BNX2X_RX_MODE_NONE;
3043 del_timer_sync(&bp->timer);
3045 if (IS_PF(bp) && !BP_NOMCP(bp)) {
3046 /* Set ALWAYS_ALIVE bit in shmem */
3047 bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
3048 bnx2x_drv_pulse(bp);
3049 bnx2x_stats_handle(bp, STATS_EVENT_STOP);
3050 bnx2x_save_statistics(bp);
3053 /* wait till consumers catch up with producers in all queues.
3054 * If we're recovering, FW can't write to host so no reason
3055 * to wait for the queues to complete all Tx.
3057 if (unload_mode != UNLOAD_RECOVERY)
3058 bnx2x_drain_tx_queues(bp);
3060 /* if VF indicate to PF this function is going down (PF will delete sp
3061 * elements and clear initializations
3064 bnx2x_clear_vlan_info(bp);
3065 bnx2x_vfpf_close_vf(bp);
3066 } else if (unload_mode != UNLOAD_RECOVERY) {
3067 /* if this is a normal/close unload need to clean up chip*/
3068 bnx2x_chip_cleanup(bp, unload_mode, keep_link);
3070 /* Send the UNLOAD_REQUEST to the MCP */
3071 bnx2x_send_unload_req(bp, unload_mode);
3073 /* Prevent transactions to host from the functions on the
3074 * engine that doesn't reset global blocks in case of global
3075 * attention once global blocks are reset and gates are opened
3076 * (the engine which leader will perform the recovery
3079 if (!CHIP_IS_E1x(bp))
3080 bnx2x_pf_disable(bp);
3082 /* Disable HW interrupts, NAPI */
3083 bnx2x_netif_stop(bp, 1);
3084 /* Delete all NAPI objects */
3085 bnx2x_del_all_napi(bp);
3086 if (CNIC_LOADED(bp))
3087 bnx2x_del_all_napi_cnic(bp);
3091 /* Report UNLOAD_DONE to MCP */
3092 bnx2x_send_unload_done(bp, false);
3096 * At this stage no more interrupts will arrive so we may safely clean
3097 * the queueable objects here in case they failed to get cleaned so far.
3100 bnx2x_squeeze_objects(bp);
3102 /* There should be no more pending SP commands at this stage */
3107 /* clear pending work in rtnl task */
3108 bp->sp_rtnl_state = 0;
3111 /* Free SKBs, SGEs, TPA pool and driver internals */
3112 bnx2x_free_skbs(bp);
3113 if (CNIC_LOADED(bp))
3114 bnx2x_free_skbs_cnic(bp);
3115 for_each_rx_queue(bp, i)
3116 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
3118 bnx2x_free_fp_mem(bp);
3119 if (CNIC_LOADED(bp))
3120 bnx2x_free_fp_mem_cnic(bp);
3123 if (CNIC_LOADED(bp))
3124 bnx2x_free_mem_cnic(bp);
3128 bp->state = BNX2X_STATE_CLOSED;
3129 bp->cnic_loaded = false;
3131 /* Clear driver version indication in shmem */
3132 if (IS_PF(bp) && !BP_NOMCP(bp))
3133 bnx2x_update_mng_version(bp);
3135 /* Check if there are pending parity attentions. If there are - set
3136 * RECOVERY_IN_PROGRESS.
3138 if (IS_PF(bp) && bnx2x_chk_parity_attn(bp, &global, false)) {
3139 bnx2x_set_reset_in_progress(bp);
3141 /* Set RESET_IS_GLOBAL if needed */
3143 bnx2x_set_reset_global(bp);
3146 /* The last driver must disable a "close the gate" if there is no
3147 * parity attention or "process kill" pending.
3150 !bnx2x_clear_pf_load(bp) &&
3151 bnx2x_reset_is_done(bp, BP_PATH(bp)))
3152 bnx2x_disable_close_the_gate(bp);
3154 DP(NETIF_MSG_IFUP, "Ending NIC unload\n");
3159 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
3163 /* If there is no power capability, silently succeed */
3164 if (!bp->pdev->pm_cap) {
3165 BNX2X_DEV_INFO("No power capability. Breaking.\n");
3169 pci_read_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL, &pmcsr);
3173 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3174 ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
3175 PCI_PM_CTRL_PME_STATUS));
3177 if (pmcsr & PCI_PM_CTRL_STATE_MASK)
3178 /* delay required during transition out of D3hot */
3183 /* If there are other clients above don't
3184 shut down the power */
3185 if (atomic_read(&bp->pdev->enable_cnt) != 1)
3187 /* Don't shut down the power for emulation and FPGA */
3188 if (CHIP_REV_IS_SLOW(bp))
3191 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
3195 pmcsr |= PCI_PM_CTRL_PME_ENABLE;
3197 pci_write_config_word(bp->pdev, bp->pdev->pm_cap + PCI_PM_CTRL,
3200 /* No more memory access after this point until
3201 * device is brought back to D0.
3206 dev_err(&bp->pdev->dev, "Can't support state = %d\n", state);
3213 * net_device service functions
3215 static int bnx2x_poll(struct napi_struct *napi, int budget)
3217 struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
3219 struct bnx2x *bp = fp->bp;
3223 #ifdef BNX2X_STOP_ON_ERROR
3224 if (unlikely(bp->panic)) {
3225 napi_complete(napi);
3229 for_each_cos_in_tx_queue(fp, cos)
3230 if (bnx2x_tx_queue_has_work(fp->txdata_ptr[cos]))
3231 bnx2x_tx_int(bp, fp->txdata_ptr[cos]);
3233 rx_work_done = (bnx2x_has_rx_work(fp)) ? bnx2x_rx_int(fp, budget) : 0;
3235 if (rx_work_done < budget) {
3236 /* No need to update SB for FCoE L2 ring as long as
3237 * it's connected to the default SB and the SB
3238 * has been updated when NAPI was scheduled.
3240 if (IS_FCOE_FP(fp)) {
3241 napi_complete_done(napi, rx_work_done);
3243 bnx2x_update_fpsb_idx(fp);
3244 /* bnx2x_has_rx_work() reads the status block,
3245 * thus we need to ensure that status block indices
3246 * have been actually read (bnx2x_update_fpsb_idx)
3247 * prior to this check (bnx2x_has_rx_work) so that
3248 * we won't write the "newer" value of the status block
3249 * to IGU (if there was a DMA right after
3250 * bnx2x_has_rx_work and if there is no rmb, the memory
3251 * reading (bnx2x_update_fpsb_idx) may be postponed
3252 * to right before bnx2x_ack_sb). In this case there
3253 * will never be another interrupt until there is
3254 * another update of the status block, while there
3255 * is still unhandled work.
3259 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
3260 if (napi_complete_done(napi, rx_work_done)) {
3261 /* Re-enable interrupts */
3262 DP(NETIF_MSG_RX_STATUS,
3263 "Update index to %d\n", fp->fp_hc_idx);
3264 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
3265 le16_to_cpu(fp->fp_hc_idx),
3269 rx_work_done = budget;
3274 return rx_work_done;
3277 /* we split the first BD into headers and data BDs
3278 * to ease the pain of our fellow microcode engineers
3279 * we use one mapping for both BDs
3281 static u16 bnx2x_tx_split(struct bnx2x *bp,
3282 struct bnx2x_fp_txdata *txdata,
3283 struct sw_tx_bd *tx_buf,
3284 struct eth_tx_start_bd **tx_bd, u16 hlen,
3287 struct eth_tx_start_bd *h_tx_bd = *tx_bd;
3288 struct eth_tx_bd *d_tx_bd;
3290 int old_len = le16_to_cpu(h_tx_bd->nbytes);
3292 /* first fix first BD */
3293 h_tx_bd->nbytes = cpu_to_le16(hlen);
3295 DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d (%x:%x)\n",
3296 h_tx_bd->nbytes, h_tx_bd->addr_hi, h_tx_bd->addr_lo);
3298 /* now get a new data BD
3299 * (after the pbd) and fill it */
3300 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3301 d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
3303 mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
3304 le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
3306 d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
3307 d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
3308 d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
3310 /* this marks the BD as one that has no individual mapping */
3311 tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
3313 DP(NETIF_MSG_TX_QUEUED,
3314 "TSO split data size is %d (%x:%x)\n",
3315 d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
3318 *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
3323 #define bswab32(b32) ((__force __le32) swab32((__force __u32) (b32)))
3324 #define bswab16(b16) ((__force __le16) swab16((__force __u16) (b16)))
3325 static __le16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
3327 __sum16 tsum = (__force __sum16) csum;
3330 tsum = ~csum_fold(csum_sub((__force __wsum) csum,
3331 csum_partial(t_header - fix, fix, 0)));
3334 tsum = ~csum_fold(csum_add((__force __wsum) csum,
3335 csum_partial(t_header, -fix, 0)));
3337 return bswab16(tsum);
3340 static u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
3346 if (skb->ip_summed != CHECKSUM_PARTIAL)
3349 protocol = vlan_get_protocol(skb);
3350 if (protocol == htons(ETH_P_IPV6)) {
3352 prot = ipv6_hdr(skb)->nexthdr;
3355 prot = ip_hdr(skb)->protocol;
3358 if (!CHIP_IS_E1x(bp) && skb->encapsulation) {
3359 if (inner_ip_hdr(skb)->version == 6) {
3360 rc |= XMIT_CSUM_ENC_V6;
3361 if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
3362 rc |= XMIT_CSUM_TCP;
3364 rc |= XMIT_CSUM_ENC_V4;
3365 if (inner_ip_hdr(skb)->protocol == IPPROTO_TCP)
3366 rc |= XMIT_CSUM_TCP;
3369 if (prot == IPPROTO_TCP)
3370 rc |= XMIT_CSUM_TCP;
3372 if (skb_is_gso(skb)) {
3373 if (skb_is_gso_v6(skb)) {
3374 rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP);
3375 if (rc & XMIT_CSUM_ENC)
3376 rc |= XMIT_GSO_ENC_V6;
3378 rc |= (XMIT_GSO_V4 | XMIT_CSUM_TCP);
3379 if (rc & XMIT_CSUM_ENC)
3380 rc |= XMIT_GSO_ENC_V4;
3387 /* VXLAN: 4 = 1 (for linear data BD) + 3 (2 for PBD and last BD) */
3388 #define BNX2X_NUM_VXLAN_TSO_WIN_SUB_BDS 4
3390 /* Regular: 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
3391 #define BNX2X_NUM_TSO_WIN_SUB_BDS 3
3393 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - BDS_PER_TX_PKT)
3394 /* check if packet requires linearization (packet is too fragmented)
3395 no need to check fragmentation if page size > 8K (there will be no
3396 violation to FW restrictions) */
3397 static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
3400 int first_bd_sz = 0, num_tso_win_sub = BNX2X_NUM_TSO_WIN_SUB_BDS;
3401 int to_copy = 0, hlen = 0;
3403 if (xmit_type & XMIT_GSO_ENC)
3404 num_tso_win_sub = BNX2X_NUM_VXLAN_TSO_WIN_SUB_BDS;
3406 if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - num_tso_win_sub)) {
3407 if (xmit_type & XMIT_GSO) {
3408 unsigned short lso_mss = skb_shinfo(skb)->gso_size;
3409 int wnd_size = MAX_FETCH_BD - num_tso_win_sub;
3410 /* Number of windows to check */
3411 int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
3416 /* Headers length */
3417 if (xmit_type & XMIT_GSO_ENC)
3418 hlen = (int)(skb_inner_transport_header(skb) -
3420 inner_tcp_hdrlen(skb);
3422 hlen = (int)(skb_transport_header(skb) -
3423 skb->data) + tcp_hdrlen(skb);
3425 /* Amount of data (w/o headers) on linear part of SKB*/
3426 first_bd_sz = skb_headlen(skb) - hlen;
3428 wnd_sum = first_bd_sz;
3430 /* Calculate the first sum - it's special */
3431 for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
3433 skb_frag_size(&skb_shinfo(skb)->frags[frag_idx]);
3435 /* If there was data on linear skb data - check it */
3436 if (first_bd_sz > 0) {
3437 if (unlikely(wnd_sum < lso_mss)) {
3442 wnd_sum -= first_bd_sz;
3445 /* Others are easier: run through the frag list and
3446 check all windows */
3447 for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
3449 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1]);
3451 if (unlikely(wnd_sum < lso_mss)) {
3456 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx]);
3459 /* in non-LSO too fragmented packet should always
3466 if (unlikely(to_copy))
3467 DP(NETIF_MSG_TX_QUEUED,
3468 "Linearization IS REQUIRED for %s packet. num_frags %d hlen %d first_bd_sz %d\n",
3469 (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
3470 skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
3477 * bnx2x_set_pbd_gso - update PBD in GSO case.
3481 * @xmit_type: xmit flags
3483 static void bnx2x_set_pbd_gso(struct sk_buff *skb,
3484 struct eth_tx_parse_bd_e1x *pbd,
3487 pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
3488 pbd->tcp_send_seq = bswab32(tcp_hdr(skb)->seq);
3489 pbd->tcp_flags = pbd_tcp_flags(tcp_hdr(skb));
3491 if (xmit_type & XMIT_GSO_V4) {
3492 pbd->ip_id = bswab16(ip_hdr(skb)->id);
3493 pbd->tcp_pseudo_csum =
3494 bswab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
3496 0, IPPROTO_TCP, 0));
3498 pbd->tcp_pseudo_csum =
3499 bswab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
3500 &ipv6_hdr(skb)->daddr,
3501 0, IPPROTO_TCP, 0));
3505 cpu_to_le16(ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN);
3509 * bnx2x_set_pbd_csum_enc - update PBD with checksum and return header length
3511 * @bp: driver handle
3513 * @parsing_data: data to be updated
3514 * @xmit_type: xmit flags
3516 * 57712/578xx related, when skb has encapsulation
3518 static u8 bnx2x_set_pbd_csum_enc(struct bnx2x *bp, struct sk_buff *skb,
3519 u32 *parsing_data, u32 xmit_type)
3522 ((((u8 *)skb_inner_transport_header(skb) - skb->data) >> 1) <<
3523 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3524 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3526 if (xmit_type & XMIT_CSUM_TCP) {
3527 *parsing_data |= ((inner_tcp_hdrlen(skb) / 4) <<
3528 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3529 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3531 return skb_inner_transport_header(skb) +
3532 inner_tcp_hdrlen(skb) - skb->data;
3535 /* We support checksum offload for TCP and UDP only.
3536 * No need to pass the UDP header length - it's a constant.
3538 return skb_inner_transport_header(skb) +
3539 sizeof(struct udphdr) - skb->data;
3543 * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
3545 * @bp: driver handle
3547 * @parsing_data: data to be updated
3548 * @xmit_type: xmit flags
3550 * 57712/578xx related
3552 static u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
3553 u32 *parsing_data, u32 xmit_type)
3556 ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
3557 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W_SHIFT) &
3558 ETH_TX_PARSE_BD_E2_L4_HDR_START_OFFSET_W;
3560 if (xmit_type & XMIT_CSUM_TCP) {
3561 *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
3562 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
3563 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
3565 return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
3567 /* We support checksum offload for TCP and UDP only.
3568 * No need to pass the UDP header length - it's a constant.
3570 return skb_transport_header(skb) + sizeof(struct udphdr) - skb->data;
3573 /* set FW indication according to inner or outer protocols if tunneled */
3574 static void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3575 struct eth_tx_start_bd *tx_start_bd,
3578 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
3580 if (xmit_type & (XMIT_CSUM_ENC_V6 | XMIT_CSUM_V6))
3581 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IPV6;
3583 if (!(xmit_type & XMIT_CSUM_TCP))
3584 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
3588 * bnx2x_set_pbd_csum - update PBD with checksum and return header length
3590 * @bp: driver handle
3592 * @pbd: parse BD to be updated
3593 * @xmit_type: xmit flags
3595 static u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
3596 struct eth_tx_parse_bd_e1x *pbd,
3599 u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
3601 /* for now NS flag is not used in Linux */
3604 ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3605 ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
3607 pbd->ip_hlen_w = (skb_transport_header(skb) -
3608 skb_network_header(skb)) >> 1;
3610 hlen += pbd->ip_hlen_w;
3612 /* We support checksum offload for TCP and UDP only */
3613 if (xmit_type & XMIT_CSUM_TCP)
3614 hlen += tcp_hdrlen(skb) / 2;
3616 hlen += sizeof(struct udphdr) / 2;
3618 pbd->total_hlen_w = cpu_to_le16(hlen);
3621 if (xmit_type & XMIT_CSUM_TCP) {
3622 pbd->tcp_pseudo_csum = bswab16(tcp_hdr(skb)->check);
3625 s8 fix = SKB_CS_OFF(skb); /* signed! */
3627 DP(NETIF_MSG_TX_QUEUED,
3628 "hlen %d fix %d csum before fix %x\n",
3629 le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
3631 /* HW bug: fixup the CSUM */
3632 pbd->tcp_pseudo_csum =
3633 bnx2x_csum_fix(skb_transport_header(skb),
3636 DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
3637 pbd->tcp_pseudo_csum);
3643 static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb,
3644 struct eth_tx_parse_bd_e2 *pbd_e2,
3645 struct eth_tx_parse_2nd_bd *pbd2,
3650 u8 outerip_off, outerip_len = 0;
3652 /* from outer IP to transport */
3653 hlen_w = (skb_inner_transport_header(skb) -
3654 skb_network_header(skb)) >> 1;
3657 hlen_w += inner_tcp_hdrlen(skb) >> 1;
3659 pbd2->fw_ip_hdr_to_payload_w = hlen_w;
3661 /* outer IP header info */
3662 if (xmit_type & XMIT_CSUM_V4) {
3663 struct iphdr *iph = ip_hdr(skb);
3664 u32 csum = (__force u32)(~iph->check) -
3665 (__force u32)iph->tot_len -
3666 (__force u32)iph->frag_off;
3668 outerip_len = iph->ihl << 1;
3670 pbd2->fw_ip_csum_wo_len_flags_frag =
3671 bswab16(csum_fold((__force __wsum)csum));
3673 pbd2->fw_ip_hdr_to_payload_w =
3674 hlen_w - ((sizeof(struct ipv6hdr)) >> 1);
3675 pbd_e2->data.tunnel_data.flags |=
3676 ETH_TUNNEL_DATA_IPV6_OUTER;
3679 pbd2->tcp_send_seq = bswab32(inner_tcp_hdr(skb)->seq);
3681 pbd2->tcp_flags = pbd_tcp_flags(inner_tcp_hdr(skb));
3683 /* inner IP header info */
3684 if (xmit_type & XMIT_CSUM_ENC_V4) {
3685 pbd2->hw_ip_id = bswab16(inner_ip_hdr(skb)->id);
3687 pbd_e2->data.tunnel_data.pseudo_csum =
3688 bswab16(~csum_tcpudp_magic(
3689 inner_ip_hdr(skb)->saddr,
3690 inner_ip_hdr(skb)->daddr,
3691 0, IPPROTO_TCP, 0));
3693 pbd_e2->data.tunnel_data.pseudo_csum =
3694 bswab16(~csum_ipv6_magic(
3695 &inner_ipv6_hdr(skb)->saddr,
3696 &inner_ipv6_hdr(skb)->daddr,
3697 0, IPPROTO_TCP, 0));
3700 outerip_off = (skb_network_header(skb) - skb->data) >> 1;
3705 ETH_TX_PARSE_2ND_BD_IP_HDR_LEN_OUTER_W_SHIFT) |
3706 ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
3707 ETH_TX_PARSE_2ND_BD_LLC_SNAP_EN_SHIFT);
3709 if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
3710 SET_FLAG(*global_data, ETH_TX_PARSE_2ND_BD_TUNNEL_UDP_EXIST, 1);
3711 pbd2->tunnel_udp_hdr_start_w = skb_transport_offset(skb) >> 1;
3715 static inline void bnx2x_set_ipv6_ext_e2(struct sk_buff *skb, u32 *parsing_data,
3718 struct ipv6hdr *ipv6;
3720 if (!(xmit_type & (XMIT_GSO_ENC_V6 | XMIT_GSO_V6)))
3723 if (xmit_type & XMIT_GSO_ENC_V6)
3724 ipv6 = inner_ipv6_hdr(skb);
3725 else /* XMIT_GSO_V6 */
3726 ipv6 = ipv6_hdr(skb);
3728 if (ipv6->nexthdr == NEXTHDR_IPV6)
3729 *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
3732 /* called with netif_tx_lock
3733 * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
3734 * netif_wake_queue()
3736 netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
3738 struct bnx2x *bp = netdev_priv(dev);
3740 struct netdev_queue *txq;
3741 struct bnx2x_fp_txdata *txdata;
3742 struct sw_tx_bd *tx_buf;
3743 struct eth_tx_start_bd *tx_start_bd, *first_bd;
3744 struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
3745 struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
3746 struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
3747 struct eth_tx_parse_2nd_bd *pbd2 = NULL;
3748 u32 pbd_e2_parsing_data = 0;
3749 u16 pkt_prod, bd_prod;
3752 u32 xmit_type = bnx2x_xmit_type(bp, skb);
3755 __le16 pkt_size = 0;
3757 u8 mac_type = UNICAST_ADDRESS;
3759 #ifdef BNX2X_STOP_ON_ERROR
3760 if (unlikely(bp->panic))
3761 return NETDEV_TX_BUSY;
3764 txq_index = skb_get_queue_mapping(skb);
3765 txq = netdev_get_tx_queue(dev, txq_index);
3767 BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + (CNIC_LOADED(bp) ? 1 : 0));
3769 txdata = &bp->bnx2x_txq[txq_index];
3771 /* enable this debug print to view the transmission queue being used
3772 DP(NETIF_MSG_TX_QUEUED, "indices: txq %d, fp %d, txdata %d\n",
3773 txq_index, fp_index, txdata_index); */
3775 /* enable this debug print to view the transmission details
3776 DP(NETIF_MSG_TX_QUEUED,
3777 "transmitting packet cid %d fp index %d txdata_index %d tx_data ptr %p fp pointer %p\n",
3778 txdata->cid, fp_index, txdata_index, txdata, fp); */
3780 if (unlikely(bnx2x_tx_avail(bp, txdata) <
3781 skb_shinfo(skb)->nr_frags +
3783 NEXT_CNT_PER_TX_PKT(MAX_BDS_PER_TX_PKT))) {
3784 /* Handle special storage cases separately */
3785 if (txdata->tx_ring_size == 0) {
3786 struct bnx2x_eth_q_stats *q_stats =
3787 bnx2x_fp_qstats(bp, txdata->parent_fp);
3788 q_stats->driver_filtered_tx_pkt++;
3790 return NETDEV_TX_OK;
3792 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
3793 netif_tx_stop_queue(txq);
3794 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
3796 return NETDEV_TX_BUSY;
3799 DP(NETIF_MSG_TX_QUEUED,
3800 "queue[%d]: SKB: summed %x protocol %x protocol(%x,%x) gso type %x xmit_type %x len %d\n",
3801 txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
3802 ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type,
3805 eth = (struct ethhdr *)skb->data;
3807 /* set flag according to packet type (UNICAST_ADDRESS is default)*/
3808 if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
3809 if (is_broadcast_ether_addr(eth->h_dest))
3810 mac_type = BROADCAST_ADDRESS;
3812 mac_type = MULTICAST_ADDRESS;
3815 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - BDS_PER_TX_PKT)
3816 /* First, check if we need to linearize the skb (due to FW
3817 restrictions). No need to check fragmentation if page size > 8K
3818 (there will be no violation to FW restrictions) */
3819 if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
3820 /* Statistics of linearization */
3822 if (skb_linearize(skb) != 0) {
3823 DP(NETIF_MSG_TX_QUEUED,
3824 "SKB linearization failed - silently dropping this SKB\n");
3825 dev_kfree_skb_any(skb);
3826 return NETDEV_TX_OK;
3830 /* Map skb linear data for DMA */
3831 mapping = dma_map_single(&bp->pdev->dev, skb->data,
3832 skb_headlen(skb), DMA_TO_DEVICE);
3833 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
3834 DP(NETIF_MSG_TX_QUEUED,
3835 "SKB mapping failed - silently dropping this SKB\n");
3836 dev_kfree_skb_any(skb);
3837 return NETDEV_TX_OK;
3840 Please read carefully. First we use one BD which we mark as start,
3841 then we have a parsing info BD (used for TSO or xsum),
3842 and only then we have the rest of the TSO BDs.
3843 (don't forget to mark the last one as last,
3844 and to unmap only AFTER you write to the BD ...)
3845 And above all, all pdb sizes are in words - NOT DWORDS!
3848 /* get current pkt produced now - advance it just before sending packet
3849 * since mapping of pages may fail and cause packet to be dropped
3851 pkt_prod = txdata->tx_pkt_prod;
3852 bd_prod = TX_BD(txdata->tx_bd_prod);
3854 /* get a tx_buf and first BD
3855 * tx_start_bd may be changed during SPLIT,
3856 * but first_bd will always stay first
3858 tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
3859 tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
3860 first_bd = tx_start_bd;
3862 tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
3864 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
3865 if (!(bp->flags & TX_TIMESTAMPING_EN)) {
3866 bp->eth_stats.ptp_skip_tx_ts++;
3867 BNX2X_ERR("Tx timestamping was not enabled, this packet will not be timestamped\n");
3868 } else if (bp->ptp_tx_skb) {
3869 bp->eth_stats.ptp_skip_tx_ts++;
3870 netdev_err_once(bp->dev,
3871 "Device supports only a single outstanding packet to timestamp, this packet won't be timestamped\n");
3873 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
3874 /* schedule check for Tx timestamp */
3875 bp->ptp_tx_skb = skb_get(skb);
3876 bp->ptp_tx_start = jiffies;
3877 schedule_work(&bp->ptp_task);
3881 /* header nbd: indirectly zero other flags! */
3882 tx_start_bd->general_data = 1 << ETH_TX_START_BD_HDR_NBDS_SHIFT;
3884 /* remember the first BD of the packet */
3885 tx_buf->first_bd = txdata->tx_bd_prod;
3889 DP(NETIF_MSG_TX_QUEUED,
3890 "sending pkt %u @%p next_idx %u bd %u @%p\n",
3891 pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
3893 if (skb_vlan_tag_present(skb)) {
3894 tx_start_bd->vlan_or_ethertype =
3895 cpu_to_le16(skb_vlan_tag_get(skb));
3896 tx_start_bd->bd_flags.as_bitfield |=
3897 (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
3899 /* when transmitting in a vf, start bd must hold the ethertype
3900 * for fw to enforce it
3903 #ifndef BNX2X_STOP_ON_ERROR
3906 /* Still need to consider inband vlan for enforced */
3907 if (__vlan_get_tag(skb, &vlan_tci)) {
3908 tx_start_bd->vlan_or_ethertype =
3909 cpu_to_le16(ntohs(eth->h_proto));
3911 tx_start_bd->bd_flags.as_bitfield |=
3912 (X_ETH_INBAND_VLAN <<
3913 ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
3914 tx_start_bd->vlan_or_ethertype =
3915 cpu_to_le16(vlan_tci);
3917 #ifndef BNX2X_STOP_ON_ERROR
3919 /* used by FW for packet accounting */
3920 tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
3925 nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
3927 /* turn on parsing and get a BD */
3928 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3930 if (xmit_type & XMIT_CSUM)
3931 bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
3933 if (!CHIP_IS_E1x(bp)) {
3934 pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
3935 memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
3937 if (xmit_type & XMIT_CSUM_ENC) {
3938 u16 global_data = 0;
3940 /* Set PBD in enc checksum offload case */
3941 hlen = bnx2x_set_pbd_csum_enc(bp, skb,
3942 &pbd_e2_parsing_data,
3945 /* turn on 2nd parsing and get a BD */
3946 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3948 pbd2 = &txdata->tx_desc_ring[bd_prod].parse_2nd_bd;
3950 memset(pbd2, 0, sizeof(*pbd2));
3952 pbd_e2->data.tunnel_data.ip_hdr_start_inner_w =
3953 (skb_inner_network_header(skb) -
3956 if (xmit_type & XMIT_GSO_ENC)
3957 bnx2x_update_pbds_gso_enc(skb, pbd_e2, pbd2,
3961 pbd2->global_data = cpu_to_le16(global_data);
3963 /* add addition parse BD indication to start BD */
3964 SET_FLAG(tx_start_bd->general_data,
3965 ETH_TX_START_BD_PARSE_NBDS, 1);
3966 /* set encapsulation flag in start BD */
3967 SET_FLAG(tx_start_bd->general_data,
3968 ETH_TX_START_BD_TUNNEL_EXIST, 1);
3970 tx_buf->flags |= BNX2X_HAS_SECOND_PBD;
3973 } else if (xmit_type & XMIT_CSUM) {
3974 /* Set PBD in checksum offload case w/o encapsulation */
3975 hlen = bnx2x_set_pbd_csum_e2(bp, skb,
3976 &pbd_e2_parsing_data,
3980 bnx2x_set_ipv6_ext_e2(skb, &pbd_e2_parsing_data, xmit_type);
3981 /* Add the macs to the parsing BD if this is a vf or if
3982 * Tx Switching is enabled.
3985 /* override GRE parameters in BD */
3986 bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
3987 &pbd_e2->data.mac_addr.src_mid,
3988 &pbd_e2->data.mac_addr.src_lo,
3991 bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.dst_hi,
3992 &pbd_e2->data.mac_addr.dst_mid,
3993 &pbd_e2->data.mac_addr.dst_lo,
3996 if (bp->flags & TX_SWITCHING)
3997 bnx2x_set_fw_mac_addr(
3998 &pbd_e2->data.mac_addr.dst_hi,
3999 &pbd_e2->data.mac_addr.dst_mid,
4000 &pbd_e2->data.mac_addr.dst_lo,
4002 #ifdef BNX2X_STOP_ON_ERROR
4003 /* Enforce security is always set in Stop on Error -
4004 * source mac should be present in the parsing BD
4006 bnx2x_set_fw_mac_addr(&pbd_e2->data.mac_addr.src_hi,
4007 &pbd_e2->data.mac_addr.src_mid,
4008 &pbd_e2->data.mac_addr.src_lo,
4013 SET_FLAG(pbd_e2_parsing_data,
4014 ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE, mac_type);
4016 u16 global_data = 0;
4017 pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
4018 memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
4019 /* Set PBD in checksum offload case */
4020 if (xmit_type & XMIT_CSUM)
4021 hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
4023 SET_FLAG(global_data,
4024 ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE, mac_type);
4025 pbd_e1x->global_data |= cpu_to_le16(global_data);
4028 /* Setup the data pointer of the first BD of the packet */
4029 tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4030 tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4031 tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
4032 pkt_size = tx_start_bd->nbytes;
4034 DP(NETIF_MSG_TX_QUEUED,
4035 "first bd @%p addr (%x:%x) nbytes %d flags %x vlan %x\n",
4036 tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
4037 le16_to_cpu(tx_start_bd->nbytes),
4038 tx_start_bd->bd_flags.as_bitfield,
4039 le16_to_cpu(tx_start_bd->vlan_or_ethertype));
4041 if (xmit_type & XMIT_GSO) {
4043 DP(NETIF_MSG_TX_QUEUED,
4044 "TSO packet len %d hlen %d total len %d tso size %d\n",
4045 skb->len, hlen, skb_headlen(skb),
4046 skb_shinfo(skb)->gso_size);
4048 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
4050 if (unlikely(skb_headlen(skb) > hlen)) {
4052 bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
4056 if (!CHIP_IS_E1x(bp))
4057 pbd_e2_parsing_data |=
4058 (skb_shinfo(skb)->gso_size <<
4059 ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
4060 ETH_TX_PARSE_BD_E2_LSO_MSS;
4062 bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
4065 /* Set the PBD's parsing_data field if not zero
4066 * (for the chips newer than 57711).
4068 if (pbd_e2_parsing_data)
4069 pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
4071 tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
4073 /* Handle fragmented skb */
4074 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
4075 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4077 mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
4078 skb_frag_size(frag), DMA_TO_DEVICE);
4079 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
4080 unsigned int pkts_compl = 0, bytes_compl = 0;
4082 DP(NETIF_MSG_TX_QUEUED,
4083 "Unable to map page - dropping packet...\n");
4085 /* we need unmap all buffers already mapped
4087 * first_bd->nbd need to be properly updated
4088 * before call to bnx2x_free_tx_pkt
4090 first_bd->nbd = cpu_to_le16(nbd);
4091 bnx2x_free_tx_pkt(bp, txdata,
4092 TX_BD(txdata->tx_pkt_prod),
4093 &pkts_compl, &bytes_compl);
4094 return NETDEV_TX_OK;
4097 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4098 tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4099 if (total_pkt_bd == NULL)
4100 total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
4102 tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
4103 tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
4104 tx_data_bd->nbytes = cpu_to_le16(skb_frag_size(frag));
4105 le16_add_cpu(&pkt_size, skb_frag_size(frag));
4108 DP(NETIF_MSG_TX_QUEUED,
4109 "frag %d bd @%p addr (%x:%x) nbytes %d\n",
4110 i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
4111 le16_to_cpu(tx_data_bd->nbytes));
4114 DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
4116 /* update with actual num BDs */
4117 first_bd->nbd = cpu_to_le16(nbd);
4119 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
4121 /* now send a tx doorbell, counting the next BD
4122 * if the packet contains or ends with it
4124 if (TX_BD_POFF(bd_prod) < nbd)
4127 /* total_pkt_bytes should be set on the first data BD if
4128 * it's not an LSO packet and there is more than one
4129 * data BD. In this case pkt_size is limited by an MTU value.
4130 * However we prefer to set it for an LSO packet (while we don't
4131 * have to) in order to save some CPU cycles in a none-LSO
4132 * case, when we much more care about them.
4134 if (total_pkt_bd != NULL)
4135 total_pkt_bd->total_pkt_bytes = pkt_size;
4138 DP(NETIF_MSG_TX_QUEUED,
4139 "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",
4140 pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
4141 pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
4142 pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
4143 le16_to_cpu(pbd_e1x->total_hlen_w));
4145 DP(NETIF_MSG_TX_QUEUED,
4146 "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n",
4148 pbd_e2->data.mac_addr.dst_hi,
4149 pbd_e2->data.mac_addr.dst_mid,
4150 pbd_e2->data.mac_addr.dst_lo,
4151 pbd_e2->data.mac_addr.src_hi,
4152 pbd_e2->data.mac_addr.src_mid,
4153 pbd_e2->data.mac_addr.src_lo,
4154 pbd_e2->parsing_data);
4155 DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
4157 netdev_tx_sent_queue(txq, skb->len);
4159 skb_tx_timestamp(skb);
4161 txdata->tx_pkt_prod++;
4163 * Make sure that the BD data is updated before updating the producer
4164 * since FW might read the BD right after the producer is updated.
4165 * This is only applicable for weak-ordered memory model archs such
4166 * as IA-64. The following barrier is also mandatory since FW will
4167 * assumes packets must have BDs.
4171 txdata->tx_db.data.prod += nbd;
4172 /* make sure descriptor update is observed by HW */
4175 DOORBELL_RELAXED(bp, txdata->cid, txdata->tx_db.raw);
4177 txdata->tx_bd_prod += nbd;
4179 if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_DESC_PER_TX_PKT)) {
4180 netif_tx_stop_queue(txq);
4182 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
4183 * ordering of set_bit() in netif_tx_stop_queue() and read of
4187 bnx2x_fp_qstats(bp, txdata->parent_fp)->driver_xoff++;
4188 if (bnx2x_tx_avail(bp, txdata) >= MAX_DESC_PER_TX_PKT)
4189 netif_tx_wake_queue(txq);
4193 return NETDEV_TX_OK;
4196 void bnx2x_get_c2s_mapping(struct bnx2x *bp, u8 *c2s_map, u8 *c2s_default)
4198 int mfw_vn = BP_FW_MB_IDX(bp);
4201 /* If the shmem shouldn't affect configuration, reflect */
4202 if (!IS_MF_BD(bp)) {
4205 for (i = 0; i < BNX2X_MAX_PRIORITY; i++)
4212 tmp = SHMEM2_RD(bp, c2s_pcp_map_lower[mfw_vn]);
4213 tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4214 c2s_map[0] = tmp & 0xff;
4215 c2s_map[1] = (tmp >> 8) & 0xff;
4216 c2s_map[2] = (tmp >> 16) & 0xff;
4217 c2s_map[3] = (tmp >> 24) & 0xff;
4219 tmp = SHMEM2_RD(bp, c2s_pcp_map_upper[mfw_vn]);
4220 tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4221 c2s_map[4] = tmp & 0xff;
4222 c2s_map[5] = (tmp >> 8) & 0xff;
4223 c2s_map[6] = (tmp >> 16) & 0xff;
4224 c2s_map[7] = (tmp >> 24) & 0xff;
4226 tmp = SHMEM2_RD(bp, c2s_pcp_map_default[mfw_vn]);
4227 tmp = (__force u32)be32_to_cpu((__force __be32)tmp);
4228 *c2s_default = (tmp >> (8 * mfw_vn)) & 0xff;
4232 * bnx2x_setup_tc - routine to configure net_device for multi tc
4234 * @dev: net device to configure
4235 * @num_tc: number of traffic classes to enable
4237 * callback connected to the ndo_setup_tc function pointer
4239 int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
4241 struct bnx2x *bp = netdev_priv(dev);
4242 u8 c2s_map[BNX2X_MAX_PRIORITY], c2s_def;
4243 int cos, prio, count, offset;
4245 /* setup tc must be called under rtnl lock */
4248 /* no traffic classes requested. Aborting */
4250 netdev_reset_tc(dev);
4254 /* requested to support too many traffic classes */
4255 if (num_tc > bp->max_cos) {
4256 BNX2X_ERR("support for too many traffic classes requested: %d. Max supported is %d\n",
4257 num_tc, bp->max_cos);
4261 /* declare amount of supported traffic classes */
4262 if (netdev_set_num_tc(dev, num_tc)) {
4263 BNX2X_ERR("failed to declare %d traffic classes\n", num_tc);
4267 bnx2x_get_c2s_mapping(bp, c2s_map, &c2s_def);
4269 /* configure priority to traffic class mapping */
4270 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
4271 int outer_prio = c2s_map[prio];
4273 netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[outer_prio]);
4274 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4275 "mapping priority %d to tc %d\n",
4276 outer_prio, bp->prio_to_cos[outer_prio]);
4279 /* Use this configuration to differentiate tc0 from other COSes
4280 This can be used for ets or pfc, and save the effort of setting
4281 up a multio class queue disc or negotiating DCBX with a switch
4282 netdev_set_prio_tc_map(dev, 0, 0);
4283 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
4284 for (prio = 1; prio < 16; prio++) {
4285 netdev_set_prio_tc_map(dev, prio, 1);
4286 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
4289 /* configure traffic class to transmission queue mapping */
4290 for (cos = 0; cos < bp->max_cos; cos++) {
4291 count = BNX2X_NUM_ETH_QUEUES(bp);
4292 offset = cos * BNX2X_NUM_NON_CNIC_QUEUES(bp);
4293 netdev_set_tc_queue(dev, cos, count, offset);
4294 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
4295 "mapping tc %d to offset %d count %d\n",
4296 cos, offset, count);
4302 int __bnx2x_setup_tc(struct net_device *dev, enum tc_setup_type type,
4305 struct tc_mqprio_qopt *mqprio = type_data;
4307 if (type != TC_SETUP_QDISC_MQPRIO)
4310 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
4312 return bnx2x_setup_tc(dev, mqprio->num_tc);
4315 /* called with rtnl_lock */
4316 int bnx2x_change_mac_addr(struct net_device *dev, void *p)
4318 struct sockaddr *addr = p;
4319 struct bnx2x *bp = netdev_priv(dev);
4322 if (!is_valid_ether_addr(addr->sa_data)) {
4323 BNX2X_ERR("Requested MAC address is not valid\n");
4327 if (IS_MF_STORAGE_ONLY(bp)) {
4328 BNX2X_ERR("Can't change address on STORAGE ONLY function\n");
4332 if (netif_running(dev)) {
4333 rc = bnx2x_set_eth_mac(bp, false);
4338 eth_hw_addr_set(dev, addr->sa_data);
4340 if (netif_running(dev))
4341 rc = bnx2x_set_eth_mac(bp, true);
4343 if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4344 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4349 static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
4351 union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
4352 struct bnx2x_fastpath *fp = &bp->fp[fp_index];
4357 if (IS_FCOE_IDX(fp_index)) {
4358 memset(sb, 0, sizeof(union host_hc_status_block));
4359 fp->status_blk_mapping = 0;
4362 if (!CHIP_IS_E1x(bp))
4363 BNX2X_PCI_FREE(sb->e2_sb,
4364 bnx2x_fp(bp, fp_index,
4365 status_blk_mapping),
4366 sizeof(struct host_hc_status_block_e2));
4368 BNX2X_PCI_FREE(sb->e1x_sb,
4369 bnx2x_fp(bp, fp_index,
4370 status_blk_mapping),
4371 sizeof(struct host_hc_status_block_e1x));
4375 if (!skip_rx_queue(bp, fp_index)) {
4376 bnx2x_free_rx_bds(fp);
4378 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4379 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
4380 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
4381 bnx2x_fp(bp, fp_index, rx_desc_mapping),
4382 sizeof(struct eth_rx_bd) * NUM_RX_BD);
4384 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
4385 bnx2x_fp(bp, fp_index, rx_comp_mapping),
4386 sizeof(struct eth_fast_path_rx_cqe) *
4390 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
4391 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
4392 bnx2x_fp(bp, fp_index, rx_sge_mapping),
4393 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4397 if (!skip_tx_queue(bp, fp_index)) {
4398 /* fastpath tx rings: tx_buf tx_desc */
4399 for_each_cos_in_tx_queue(fp, cos) {
4400 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4402 DP(NETIF_MSG_IFDOWN,
4403 "freeing tx memory of fp %d cos %d cid %d\n",
4404 fp_index, cos, txdata->cid);
4406 BNX2X_FREE(txdata->tx_buf_ring);
4407 BNX2X_PCI_FREE(txdata->tx_desc_ring,
4408 txdata->tx_desc_mapping,
4409 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4412 /* end of fastpath */
4415 static void bnx2x_free_fp_mem_cnic(struct bnx2x *bp)
4418 for_each_cnic_queue(bp, i)
4419 bnx2x_free_fp_mem_at(bp, i);
4422 void bnx2x_free_fp_mem(struct bnx2x *bp)
4425 for_each_eth_queue(bp, i)
4426 bnx2x_free_fp_mem_at(bp, i);
4429 static void set_sb_shortcuts(struct bnx2x *bp, int index)
4431 union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
4432 if (!CHIP_IS_E1x(bp)) {
4433 bnx2x_fp(bp, index, sb_index_values) =
4434 (__le16 *)status_blk.e2_sb->sb.index_values;
4435 bnx2x_fp(bp, index, sb_running_index) =
4436 (__le16 *)status_blk.e2_sb->sb.running_index;
4438 bnx2x_fp(bp, index, sb_index_values) =
4439 (__le16 *)status_blk.e1x_sb->sb.index_values;
4440 bnx2x_fp(bp, index, sb_running_index) =
4441 (__le16 *)status_blk.e1x_sb->sb.running_index;
4445 /* Returns the number of actually allocated BDs */
4446 static int bnx2x_alloc_rx_bds(struct bnx2x_fastpath *fp,
4449 struct bnx2x *bp = fp->bp;
4450 u16 ring_prod, cqe_ring_prod;
4451 int i, failure_cnt = 0;
4453 fp->rx_comp_cons = 0;
4454 cqe_ring_prod = ring_prod = 0;
4456 /* This routine is called only during fo init so
4457 * fp->eth_q_stats.rx_skb_alloc_failed = 0
4459 for (i = 0; i < rx_ring_size; i++) {
4460 if (bnx2x_alloc_rx_data(bp, fp, ring_prod, GFP_KERNEL) < 0) {
4464 ring_prod = NEXT_RX_IDX(ring_prod);
4465 cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod);
4466 WARN_ON(ring_prod <= (i - failure_cnt));
4470 BNX2X_ERR("was only able to allocate %d rx skbs on queue[%d]\n",
4471 i - failure_cnt, fp->index);
4473 fp->rx_bd_prod = ring_prod;
4474 /* Limit the CQE producer by the CQE ring size */
4475 fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT,
4478 bnx2x_fp_stats(bp, fp)->eth_q_stats.rx_skb_alloc_failed += failure_cnt;
4480 return i - failure_cnt;
4483 static void bnx2x_set_next_page_rx_cq(struct bnx2x_fastpath *fp)
4487 for (i = 1; i <= NUM_RCQ_RINGS; i++) {
4488 struct eth_rx_cqe_next_page *nextpg;
4490 nextpg = (struct eth_rx_cqe_next_page *)
4491 &fp->rx_comp_ring[RCQ_DESC_CNT * i - 1];
4493 cpu_to_le32(U64_HI(fp->rx_comp_mapping +
4494 BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4496 cpu_to_le32(U64_LO(fp->rx_comp_mapping +
4497 BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
4501 static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
4503 union host_hc_status_block *sb;
4504 struct bnx2x_fastpath *fp = &bp->fp[index];
4507 int rx_ring_size = 0;
4509 if (!bp->rx_ring_size && IS_MF_STORAGE_ONLY(bp)) {
4510 rx_ring_size = MIN_RX_SIZE_NONTPA;
4511 bp->rx_ring_size = rx_ring_size;
4512 } else if (!bp->rx_ring_size) {
4513 rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
4515 if (CHIP_IS_E3(bp)) {
4516 u32 cfg = SHMEM_RD(bp,
4517 dev_info.port_hw_config[BP_PORT(bp)].
4520 /* Decrease ring size for 1G functions */
4521 if ((cfg & PORT_HW_CFG_NET_SERDES_IF_MASK) ==
4522 PORT_HW_CFG_NET_SERDES_IF_SGMII)
4526 /* allocate at least number of buffers required by FW */
4527 rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
4528 MIN_RX_SIZE_TPA, rx_ring_size);
4530 bp->rx_ring_size = rx_ring_size;
4531 } else /* if rx_ring_size specified - use it */
4532 rx_ring_size = bp->rx_ring_size;
4534 DP(BNX2X_MSG_SP, "calculated rx_ring_size %d\n", rx_ring_size);
4537 sb = &bnx2x_fp(bp, index, status_blk);
4539 if (!IS_FCOE_IDX(index)) {
4541 if (!CHIP_IS_E1x(bp)) {
4542 sb->e2_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4543 sizeof(struct host_hc_status_block_e2));
4547 sb->e1x_sb = BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, status_blk_mapping),
4548 sizeof(struct host_hc_status_block_e1x));
4554 /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
4555 * set shortcuts for it.
4557 if (!IS_FCOE_IDX(index))
4558 set_sb_shortcuts(bp, index);
4561 if (!skip_tx_queue(bp, index)) {
4562 /* fastpath tx rings: tx_buf tx_desc */
4563 for_each_cos_in_tx_queue(fp, cos) {
4564 struct bnx2x_fp_txdata *txdata = fp->txdata_ptr[cos];
4567 "allocating tx memory of fp %d cos %d\n",
4570 txdata->tx_buf_ring = kcalloc(NUM_TX_BD,
4571 sizeof(struct sw_tx_bd),
4573 if (!txdata->tx_buf_ring)
4575 txdata->tx_desc_ring = BNX2X_PCI_ALLOC(&txdata->tx_desc_mapping,
4576 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
4577 if (!txdata->tx_desc_ring)
4583 if (!skip_rx_queue(bp, index)) {
4584 /* fastpath rx rings: rx_buf rx_desc rx_comp */
4585 bnx2x_fp(bp, index, rx_buf_ring) =
4586 kcalloc(NUM_RX_BD, sizeof(struct sw_rx_bd), GFP_KERNEL);
4587 if (!bnx2x_fp(bp, index, rx_buf_ring))
4589 bnx2x_fp(bp, index, rx_desc_ring) =
4590 BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_desc_mapping),
4591 sizeof(struct eth_rx_bd) * NUM_RX_BD);
4592 if (!bnx2x_fp(bp, index, rx_desc_ring))
4595 /* Seed all CQEs by 1s */
4596 bnx2x_fp(bp, index, rx_comp_ring) =
4597 BNX2X_PCI_FALLOC(&bnx2x_fp(bp, index, rx_comp_mapping),
4598 sizeof(struct eth_fast_path_rx_cqe) * NUM_RCQ_BD);
4599 if (!bnx2x_fp(bp, index, rx_comp_ring))
4603 bnx2x_fp(bp, index, rx_page_ring) =
4604 kcalloc(NUM_RX_SGE, sizeof(struct sw_rx_page),
4606 if (!bnx2x_fp(bp, index, rx_page_ring))
4608 bnx2x_fp(bp, index, rx_sge_ring) =
4609 BNX2X_PCI_ALLOC(&bnx2x_fp(bp, index, rx_sge_mapping),
4610 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
4611 if (!bnx2x_fp(bp, index, rx_sge_ring))
4614 bnx2x_set_next_page_rx_bd(fp);
4617 bnx2x_set_next_page_rx_cq(fp);
4620 ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
4621 if (ring_size < rx_ring_size)
4627 /* handles low memory cases */
4629 BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
4631 /* FW will drop all packets if queue is not big enough,
4632 * In these cases we disable the queue
4633 * Min size is different for OOO, TPA and non-TPA queues
4635 if (ring_size < (fp->mode == TPA_MODE_DISABLED ?
4636 MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
4637 /* release memory allocated for this queue */
4638 bnx2x_free_fp_mem_at(bp, index);
4644 static int bnx2x_alloc_fp_mem_cnic(struct bnx2x *bp)
4648 if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX(bp)))
4649 /* we will fail load process instead of mark
4657 static int bnx2x_alloc_fp_mem(struct bnx2x *bp)
4661 /* 1. Allocate FP for leading - fatal if error
4662 * 2. Allocate RSS - fix number of queues if error
4666 if (bnx2x_alloc_fp_mem_at(bp, 0))
4670 for_each_nondefault_eth_queue(bp, i)
4671 if (bnx2x_alloc_fp_mem_at(bp, i))
4674 /* handle memory failures */
4675 if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
4676 int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
4679 bnx2x_shrink_eth_fp(bp, delta);
4680 if (CNIC_SUPPORT(bp))
4681 /* move non eth FPs next to last eth FP
4682 * must be done in that order
4683 * FCOE_IDX < FWD_IDX < OOO_IDX
4686 /* move FCoE fp even NO_FCOE_FLAG is on */
4687 bnx2x_move_fp(bp, FCOE_IDX(bp), FCOE_IDX(bp) - delta);
4688 bp->num_ethernet_queues -= delta;
4689 bp->num_queues = bp->num_ethernet_queues +
4690 bp->num_cnic_queues;
4691 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
4692 bp->num_queues + delta, bp->num_queues);
4698 void bnx2x_free_mem_bp(struct bnx2x *bp)
4702 for (i = 0; i < bp->fp_array_size; i++)
4703 kfree(bp->fp[i].tpa_info);
4706 kfree(bp->fp_stats);
4707 kfree(bp->bnx2x_txq);
4708 kfree(bp->msix_table);
4712 int bnx2x_alloc_mem_bp(struct bnx2x *bp)
4714 struct bnx2x_fastpath *fp;
4715 struct msix_entry *tbl;
4716 struct bnx2x_ilt *ilt;
4717 int msix_table_size = 0;
4718 int fp_array_size, txq_array_size;
4722 * The biggest MSI-X table we might need is as a maximum number of fast
4723 * path IGU SBs plus default SB (for PF only).
4725 msix_table_size = bp->igu_sb_cnt;
4728 BNX2X_DEV_INFO("msix_table_size %d\n", msix_table_size);
4730 /* fp array: RSS plus CNIC related L2 queues */
4731 fp_array_size = BNX2X_MAX_RSS_COUNT(bp) + CNIC_SUPPORT(bp);
4732 bp->fp_array_size = fp_array_size;
4733 BNX2X_DEV_INFO("fp_array_size %d\n", bp->fp_array_size);
4735 fp = kcalloc(bp->fp_array_size, sizeof(*fp), GFP_KERNEL);
4738 for (i = 0; i < bp->fp_array_size; i++) {
4740 kcalloc(ETH_MAX_AGGREGATION_QUEUES_E1H_E2,
4741 sizeof(struct bnx2x_agg_info), GFP_KERNEL);
4742 if (!(fp[i].tpa_info))
4748 /* allocate sp objs */
4749 bp->sp_objs = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_sp_objs),
4754 /* allocate fp_stats */
4755 bp->fp_stats = kcalloc(bp->fp_array_size, sizeof(struct bnx2x_fp_stats),
4760 /* Allocate memory for the transmission queues array */
4762 BNX2X_MAX_RSS_COUNT(bp) * BNX2X_MULTI_TX_COS + CNIC_SUPPORT(bp);
4763 BNX2X_DEV_INFO("txq_array_size %d", txq_array_size);
4765 bp->bnx2x_txq = kcalloc(txq_array_size, sizeof(struct bnx2x_fp_txdata),
4771 tbl = kcalloc(msix_table_size, sizeof(*tbl), GFP_KERNEL);
4774 bp->msix_table = tbl;
4777 ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
4784 bnx2x_free_mem_bp(bp);
4788 int bnx2x_reload_if_running(struct net_device *dev)
4790 struct bnx2x *bp = netdev_priv(dev);
4792 if (unlikely(!netif_running(dev)))
4795 bnx2x_nic_unload(bp, UNLOAD_NORMAL, true);
4796 return bnx2x_nic_load(bp, LOAD_NORMAL);
4799 int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
4801 u32 sel_phy_idx = 0;
4802 if (bp->link_params.num_phys <= 1)
4805 if (bp->link_vars.link_up) {
4806 sel_phy_idx = EXT_PHY1;
4807 /* In case link is SERDES, check if the EXT_PHY2 is the one */
4808 if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
4809 (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
4810 sel_phy_idx = EXT_PHY2;
4813 switch (bnx2x_phy_selection(&bp->link_params)) {
4814 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
4815 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
4816 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
4817 sel_phy_idx = EXT_PHY1;
4819 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
4820 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
4821 sel_phy_idx = EXT_PHY2;
4828 int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
4830 u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
4832 * The selected activated PHY is always after swapping (in case PHY
4833 * swapping is enabled). So when swapping is enabled, we need to reverse
4837 if (bp->link_params.multi_phy_config &
4838 PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
4839 if (sel_phy_idx == EXT_PHY1)
4840 sel_phy_idx = EXT_PHY2;
4841 else if (sel_phy_idx == EXT_PHY2)
4842 sel_phy_idx = EXT_PHY1;
4844 return LINK_CONFIG_IDX(sel_phy_idx);
4847 #ifdef NETDEV_FCOE_WWNN
4848 int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
4850 struct bnx2x *bp = netdev_priv(dev);
4851 struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
4854 case NETDEV_FCOE_WWNN:
4855 *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
4856 cp->fcoe_wwn_node_name_lo);
4858 case NETDEV_FCOE_WWPN:
4859 *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
4860 cp->fcoe_wwn_port_name_lo);
4863 BNX2X_ERR("Wrong WWN type requested - %d\n", type);
4871 /* called with rtnl_lock */
4872 int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
4874 struct bnx2x *bp = netdev_priv(dev);
4876 if (pci_num_vf(bp->pdev)) {
4877 DP(BNX2X_MSG_IOV, "VFs are enabled, can not change MTU\n");
4881 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
4882 BNX2X_ERR("Can't perform change MTU during parity recovery\n");
4886 /* This does not race with packet allocation
4887 * because the actual alloc size is
4888 * only updated as part of load
4892 if (!bnx2x_mtu_allows_gro(new_mtu))
4893 dev->features &= ~NETIF_F_GRO_HW;
4895 if (IS_PF(bp) && SHMEM2_HAS(bp, curr_cfg))
4896 SHMEM2_WR(bp, curr_cfg, CURR_CFG_MET_OS);
4898 return bnx2x_reload_if_running(dev);
4901 netdev_features_t bnx2x_fix_features(struct net_device *dev,
4902 netdev_features_t features)
4904 struct bnx2x *bp = netdev_priv(dev);
4906 if (pci_num_vf(bp->pdev)) {
4907 netdev_features_t changed = dev->features ^ features;
4909 /* Revert the requested changes in features if they
4910 * would require internal reload of PF in bnx2x_set_features().
4912 if (!(features & NETIF_F_RXCSUM) && !bp->disable_tpa) {
4913 features &= ~NETIF_F_RXCSUM;
4914 features |= dev->features & NETIF_F_RXCSUM;
4917 if (changed & NETIF_F_LOOPBACK) {
4918 features &= ~NETIF_F_LOOPBACK;
4919 features |= dev->features & NETIF_F_LOOPBACK;
4923 /* TPA requires Rx CSUM offloading */
4924 if (!(features & NETIF_F_RXCSUM))
4925 features &= ~NETIF_F_LRO;
4927 if (!(features & NETIF_F_GRO) || !bnx2x_mtu_allows_gro(dev->mtu))
4928 features &= ~NETIF_F_GRO_HW;
4929 if (features & NETIF_F_GRO_HW)
4930 features &= ~NETIF_F_LRO;
4935 int bnx2x_set_features(struct net_device *dev, netdev_features_t features)
4937 struct bnx2x *bp = netdev_priv(dev);
4938 netdev_features_t changes = features ^ dev->features;
4939 bool bnx2x_reload = false;
4942 /* VFs or non SRIOV PFs should be able to change loopback feature */
4943 if (!pci_num_vf(bp->pdev)) {
4944 if (features & NETIF_F_LOOPBACK) {
4945 if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
4946 bp->link_params.loopback_mode = LOOPBACK_BMAC;
4947 bnx2x_reload = true;
4950 if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
4951 bp->link_params.loopback_mode = LOOPBACK_NONE;
4952 bnx2x_reload = true;
4957 /* Don't care about GRO changes */
4958 changes &= ~NETIF_F_GRO;
4961 bnx2x_reload = true;
4964 if (bp->recovery_state == BNX2X_RECOVERY_DONE) {
4965 dev->features = features;
4966 rc = bnx2x_reload_if_running(dev);
4969 /* else: bnx2x_nic_load() will be called at end of recovery */
4975 void bnx2x_tx_timeout(struct net_device *dev, unsigned int txqueue)
4977 struct bnx2x *bp = netdev_priv(dev);
4979 /* We want the information of the dump logged,
4980 * but calling bnx2x_panic() would kill all chances of recovery.
4983 #ifndef BNX2X_STOP_ON_ERROR
4984 bnx2x_panic_dump(bp, false);
4989 /* This allows the netif to be shutdown gracefully before resetting */
4990 bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_TIMEOUT, 0);
4993 static int __maybe_unused bnx2x_suspend(struct device *dev_d)
4995 struct pci_dev *pdev = to_pci_dev(dev_d);
4996 struct net_device *dev = pci_get_drvdata(pdev);
5000 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5003 bp = netdev_priv(dev);
5007 if (!netif_running(dev)) {
5012 netif_device_detach(dev);
5014 bnx2x_nic_unload(bp, UNLOAD_CLOSE, false);
5021 static int __maybe_unused bnx2x_resume(struct device *dev_d)
5023 struct pci_dev *pdev = to_pci_dev(dev_d);
5024 struct net_device *dev = pci_get_drvdata(pdev);
5029 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
5032 bp = netdev_priv(dev);
5034 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
5035 BNX2X_ERR("Handling parity error recovery. Try again later\n");
5041 if (!netif_running(dev)) {
5046 netif_device_attach(dev);
5048 rc = bnx2x_nic_load(bp, LOAD_OPEN);
5055 SIMPLE_DEV_PM_OPS(bnx2x_pm_ops, bnx2x_suspend, bnx2x_resume);
5057 void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
5061 BNX2X_ERR("bad context pointer %p\n", cxt);
5065 /* ustorm cxt validation */
5066 cxt->ustorm_ag_context.cdu_usage =
5067 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5068 CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
5069 /* xcontext validation */
5070 cxt->xstorm_ag_context.cdu_reserved =
5071 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
5072 CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
5075 static void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
5076 u8 fw_sb_id, u8 sb_index,
5079 u32 addr = BAR_CSTRORM_INTMEM +
5080 CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
5081 REG_WR8(bp, addr, ticks);
5083 "port %x fw_sb_id %d sb_index %d ticks %d\n",
5084 port, fw_sb_id, sb_index, ticks);
5087 static void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
5088 u16 fw_sb_id, u8 sb_index,
5091 u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
5092 u32 addr = BAR_CSTRORM_INTMEM +
5093 CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
5094 u8 flags = REG_RD8(bp, addr);
5096 flags &= ~HC_INDEX_DATA_HC_ENABLED;
5097 flags |= enable_flag;
5098 REG_WR8(bp, addr, flags);
5100 "port %x fw_sb_id %d sb_index %d disable %d\n",
5101 port, fw_sb_id, sb_index, disable);
5104 void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
5105 u8 sb_index, u8 disable, u16 usec)
5107 int port = BP_PORT(bp);
5108 u8 ticks = usec / BNX2X_BTR;
5110 storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
5112 disable = disable ? 1 : (usec ? 0 : 1);
5113 storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
5116 void bnx2x_schedule_sp_rtnl(struct bnx2x *bp, enum sp_rtnl_flag flag,
5119 smp_mb__before_atomic();
5120 set_bit(flag, &bp->sp_rtnl_state);
5121 smp_mb__after_atomic();
5122 DP((BNX2X_MSG_SP | verbose), "Scheduling sp_rtnl task [Flag: %d]\n",
5124 schedule_delayed_work(&bp->sp_rtnl_task, 0);