2 * Copyright (c) 2015, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/prefetch.h>
35 #include <linux/ipv6.h>
36 #include <linux/tcp.h>
37 #include <linux/indirect_call_wrapper.h>
38 #include <net/ip6_checksum.h>
39 #include <net/page_pool.h>
40 #include <net/inet_ecn.h>
45 #include "ipoib/ipoib.h"
46 #include "en_accel/ipsec_rxtx.h"
47 #include "en_accel/tls_rxtx.h"
48 #include "lib/clock.h"
50 #include "en/xsk/rx.h"
51 #include "en/health.h"
53 static inline bool mlx5e_rx_hw_stamp(struct hwtstamp_config *config)
55 return config->rx_filter == HWTSTAMP_FILTER_ALL;
58 static inline void mlx5e_read_cqe_slot(struct mlx5_cqwq *wq,
61 u32 ci = mlx5_cqwq_ctr2ix(wq, cqcc);
63 memcpy(data, mlx5_cqwq_get_wqe(wq, ci), sizeof(struct mlx5_cqe64));
66 static inline void mlx5e_read_title_slot(struct mlx5e_rq *rq,
70 struct mlx5e_cq_decomp *cqd = &rq->cqd;
71 struct mlx5_cqe64 *title = &cqd->title;
73 mlx5e_read_cqe_slot(wq, cqcc, title);
74 cqd->left = be32_to_cpu(title->byte_cnt);
75 cqd->wqe_counter = be16_to_cpu(title->wqe_counter);
76 rq->stats->cqe_compress_blks++;
79 static inline void mlx5e_read_mini_arr_slot(struct mlx5_cqwq *wq,
80 struct mlx5e_cq_decomp *cqd,
83 mlx5e_read_cqe_slot(wq, cqcc, cqd->mini_arr);
84 cqd->mini_arr_idx = 0;
87 static inline void mlx5e_cqes_update_owner(struct mlx5_cqwq *wq, int n)
90 u8 op_own = mlx5_cqwq_get_ctr_wrap_cnt(wq, cqcc) & 1;
91 u32 ci = mlx5_cqwq_ctr2ix(wq, cqcc);
92 u32 wq_sz = mlx5_cqwq_get_size(wq);
93 u32 ci_top = min_t(u32, wq_sz, ci + n);
95 for (; ci < ci_top; ci++, n--) {
96 struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci);
101 if (unlikely(ci == wq_sz)) {
103 for (ci = 0; ci < n; ci++) {
104 struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci);
106 cqe->op_own = op_own;
111 static inline void mlx5e_decompress_cqe(struct mlx5e_rq *rq,
112 struct mlx5_cqwq *wq,
115 struct mlx5e_cq_decomp *cqd = &rq->cqd;
116 struct mlx5_mini_cqe8 *mini_cqe = &cqd->mini_arr[cqd->mini_arr_idx];
117 struct mlx5_cqe64 *title = &cqd->title;
119 title->byte_cnt = mini_cqe->byte_cnt;
120 title->check_sum = mini_cqe->checksum;
121 title->op_own &= 0xf0;
122 title->op_own |= 0x01 & (cqcc >> wq->fbc.log_sz);
123 title->wqe_counter = cpu_to_be16(cqd->wqe_counter);
125 if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ)
126 cqd->wqe_counter += mpwrq_get_cqe_consumed_strides(title);
129 mlx5_wq_cyc_ctr2ix(&rq->wqe.wq, cqd->wqe_counter + 1);
132 static inline void mlx5e_decompress_cqe_no_hash(struct mlx5e_rq *rq,
133 struct mlx5_cqwq *wq,
136 struct mlx5e_cq_decomp *cqd = &rq->cqd;
138 mlx5e_decompress_cqe(rq, wq, cqcc);
139 cqd->title.rss_hash_type = 0;
140 cqd->title.rss_hash_result = 0;
143 static inline u32 mlx5e_decompress_cqes_cont(struct mlx5e_rq *rq,
144 struct mlx5_cqwq *wq,
145 int update_owner_only,
148 struct mlx5e_cq_decomp *cqd = &rq->cqd;
149 u32 cqcc = wq->cc + update_owner_only;
153 cqe_count = min_t(u32, cqd->left, budget_rem);
155 for (i = update_owner_only; i < cqe_count;
156 i++, cqd->mini_arr_idx++, cqcc++) {
157 if (cqd->mini_arr_idx == MLX5_MINI_CQE_ARRAY_SIZE)
158 mlx5e_read_mini_arr_slot(wq, cqd, cqcc);
160 mlx5e_decompress_cqe_no_hash(rq, wq, cqcc);
161 rq->handle_rx_cqe(rq, &cqd->title);
163 mlx5e_cqes_update_owner(wq, cqcc - wq->cc);
165 cqd->left -= cqe_count;
166 rq->stats->cqe_compress_pkts += cqe_count;
171 static inline u32 mlx5e_decompress_cqes_start(struct mlx5e_rq *rq,
172 struct mlx5_cqwq *wq,
175 struct mlx5e_cq_decomp *cqd = &rq->cqd;
178 mlx5e_read_title_slot(rq, wq, cc);
179 mlx5e_read_mini_arr_slot(wq, cqd, cc + 1);
180 mlx5e_decompress_cqe(rq, wq, cc);
181 rq->handle_rx_cqe(rq, &cqd->title);
184 return mlx5e_decompress_cqes_cont(rq, wq, 1, budget_rem) - 1;
187 static inline bool mlx5e_page_is_reserved(struct page *page)
189 return page_is_pfmemalloc(page) || page_to_nid(page) != numa_mem_id();
192 static inline bool mlx5e_rx_cache_put(struct mlx5e_rq *rq,
193 struct mlx5e_dma_info *dma_info)
195 struct mlx5e_page_cache *cache = &rq->page_cache;
196 u32 tail_next = (cache->tail + 1) & (MLX5E_CACHE_SIZE - 1);
197 struct mlx5e_rq_stats *stats = rq->stats;
199 if (tail_next == cache->head) {
204 if (unlikely(mlx5e_page_is_reserved(dma_info->page))) {
205 stats->cache_waive++;
209 cache->page_cache[cache->tail] = *dma_info;
210 cache->tail = tail_next;
214 static inline bool mlx5e_rx_cache_get(struct mlx5e_rq *rq,
215 struct mlx5e_dma_info *dma_info)
217 struct mlx5e_page_cache *cache = &rq->page_cache;
218 struct mlx5e_rq_stats *stats = rq->stats;
220 if (unlikely(cache->head == cache->tail)) {
221 stats->cache_empty++;
225 if (page_ref_count(cache->page_cache[cache->head].page) != 1) {
230 *dma_info = cache->page_cache[cache->head];
231 cache->head = (cache->head + 1) & (MLX5E_CACHE_SIZE - 1);
232 stats->cache_reuse++;
234 dma_sync_single_for_device(rq->pdev, dma_info->addr,
240 static inline int mlx5e_page_alloc_pool(struct mlx5e_rq *rq,
241 struct mlx5e_dma_info *dma_info)
243 if (mlx5e_rx_cache_get(rq, dma_info))
246 dma_info->page = page_pool_dev_alloc_pages(rq->page_pool);
247 if (unlikely(!dma_info->page))
250 dma_info->addr = dma_map_page(rq->pdev, dma_info->page, 0,
251 PAGE_SIZE, rq->buff.map_dir);
252 if (unlikely(dma_mapping_error(rq->pdev, dma_info->addr))) {
253 page_pool_recycle_direct(rq->page_pool, dma_info->page);
254 dma_info->page = NULL;
261 static inline int mlx5e_page_alloc(struct mlx5e_rq *rq,
262 struct mlx5e_dma_info *dma_info)
265 return mlx5e_xsk_page_alloc_umem(rq, dma_info);
267 return mlx5e_page_alloc_pool(rq, dma_info);
270 void mlx5e_page_dma_unmap(struct mlx5e_rq *rq, struct mlx5e_dma_info *dma_info)
272 dma_unmap_page(rq->pdev, dma_info->addr, PAGE_SIZE, rq->buff.map_dir);
275 void mlx5e_page_release_dynamic(struct mlx5e_rq *rq,
276 struct mlx5e_dma_info *dma_info,
279 if (likely(recycle)) {
280 if (mlx5e_rx_cache_put(rq, dma_info))
283 mlx5e_page_dma_unmap(rq, dma_info);
284 page_pool_recycle_direct(rq->page_pool, dma_info->page);
286 mlx5e_page_dma_unmap(rq, dma_info);
287 page_pool_release_page(rq->page_pool, dma_info->page);
288 put_page(dma_info->page);
292 static inline void mlx5e_page_release(struct mlx5e_rq *rq,
293 struct mlx5e_dma_info *dma_info,
297 /* The `recycle` parameter is ignored, and the page is always
298 * put into the Reuse Ring, because there is no way to return
299 * the page to the userspace when the interface goes down.
301 mlx5e_xsk_page_release(rq, dma_info);
303 mlx5e_page_release_dynamic(rq, dma_info, recycle);
306 static inline int mlx5e_get_rx_frag(struct mlx5e_rq *rq,
307 struct mlx5e_wqe_frag_info *frag)
312 /* On first frag (offset == 0), replenish page (dma_info actually).
313 * Other frags that point to the same dma_info (with a different
314 * offset) should just use the new one without replenishing again
317 err = mlx5e_page_alloc(rq, frag->di);
322 static inline void mlx5e_put_rx_frag(struct mlx5e_rq *rq,
323 struct mlx5e_wqe_frag_info *frag,
326 if (frag->last_in_page)
327 mlx5e_page_release(rq, frag->di, recycle);
330 static inline struct mlx5e_wqe_frag_info *get_frag(struct mlx5e_rq *rq, u16 ix)
332 return &rq->wqe.frags[ix << rq->wqe.info.log_num_frags];
335 static int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe_cyc *wqe,
338 struct mlx5e_wqe_frag_info *frag = get_frag(rq, ix);
342 for (i = 0; i < rq->wqe.info.num_frags; i++, frag++) {
343 err = mlx5e_get_rx_frag(rq, frag);
347 wqe->data[i].addr = cpu_to_be64(frag->di->addr +
348 frag->offset + rq->buff.headroom);
355 mlx5e_put_rx_frag(rq, --frag, true);
360 static inline void mlx5e_free_rx_wqe(struct mlx5e_rq *rq,
361 struct mlx5e_wqe_frag_info *wi,
366 for (i = 0; i < rq->wqe.info.num_frags; i++, wi++)
367 mlx5e_put_rx_frag(rq, wi, recycle);
370 void mlx5e_dealloc_rx_wqe(struct mlx5e_rq *rq, u16 ix)
372 struct mlx5e_wqe_frag_info *wi = get_frag(rq, ix);
374 mlx5e_free_rx_wqe(rq, wi, false);
377 static int mlx5e_alloc_rx_wqes(struct mlx5e_rq *rq, u16 ix, u8 wqe_bulk)
379 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
384 int pages_desired = wqe_bulk << rq->wqe.info.log_num_frags;
386 if (unlikely(!mlx5e_xsk_pages_enough_umem(rq, pages_desired)))
390 for (i = 0; i < wqe_bulk; i++) {
391 struct mlx5e_rx_wqe_cyc *wqe = mlx5_wq_cyc_get_wqe(wq, ix + i);
393 err = mlx5e_alloc_rx_wqe(rq, wqe, ix + i);
402 mlx5e_dealloc_rx_wqe(rq, ix + i);
408 mlx5e_add_skb_frag(struct mlx5e_rq *rq, struct sk_buff *skb,
409 struct mlx5e_dma_info *di, u32 frag_offset, u32 len,
410 unsigned int truesize)
412 dma_sync_single_for_cpu(rq->pdev,
413 di->addr + frag_offset,
414 len, DMA_FROM_DEVICE);
415 page_ref_inc(di->page);
416 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
417 di->page, frag_offset, len, truesize);
421 mlx5e_copy_skb_header(struct device *pdev, struct sk_buff *skb,
422 struct mlx5e_dma_info *dma_info,
423 int offset_from, u32 headlen)
425 const void *from = page_address(dma_info->page) + offset_from;
426 /* Aligning len to sizeof(long) optimizes memcpy performance */
427 unsigned int len = ALIGN(headlen, sizeof(long));
429 dma_sync_single_for_cpu(pdev, dma_info->addr + offset_from, len,
431 skb_copy_to_linear_data(skb, from, len);
435 mlx5e_free_rx_mpwqe(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, bool recycle)
438 struct mlx5e_dma_info *dma_info = wi->umr.dma_info;
441 /* A common case for AF_XDP. */
442 if (bitmap_full(wi->xdp_xmit_bitmap, MLX5_MPWRQ_PAGES_PER_WQE))
445 no_xdp_xmit = bitmap_empty(wi->xdp_xmit_bitmap,
446 MLX5_MPWRQ_PAGES_PER_WQE);
448 for (i = 0; i < MLX5_MPWRQ_PAGES_PER_WQE; i++)
449 if (no_xdp_xmit || !test_bit(i, wi->xdp_xmit_bitmap))
450 mlx5e_page_release(rq, &dma_info[i], recycle);
453 static void mlx5e_post_rx_mpwqe(struct mlx5e_rq *rq, u8 n)
455 struct mlx5_wq_ll *wq = &rq->mpwqe.wq;
458 u16 next_wqe_index = mlx5_wq_ll_get_wqe_next_ix(wq, wq->head);
460 mlx5_wq_ll_push(wq, next_wqe_index);
463 /* ensure wqes are visible to device before updating doorbell record */
466 mlx5_wq_ll_update_db_record(wq);
469 static inline void mlx5e_fill_icosq_frag_edge(struct mlx5e_icosq *sq,
470 struct mlx5_wq_cyc *wq,
473 struct mlx5e_sq_wqe_info *edge_wi, *wi = &sq->db.ico_wqe[pi];
475 edge_wi = wi + nnops;
477 /* fill sq frag edge with nops to avoid wqe wrapping two pages */
478 for (; wi < edge_wi; wi++) {
479 wi->opcode = MLX5_OPCODE_NOP;
480 mlx5e_post_nop(wq, sq->sqn, &sq->pc);
484 static int mlx5e_alloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix)
486 struct mlx5e_mpw_info *wi = &rq->mpwqe.info[ix];
487 struct mlx5e_dma_info *dma_info = &wi->umr.dma_info[0];
488 struct mlx5e_icosq *sq = &rq->channel->icosq;
489 struct mlx5_wq_cyc *wq = &sq->wq;
490 struct mlx5e_umr_wqe *umr_wqe;
491 u16 xlt_offset = ix << (MLX5E_LOG_ALIGNED_MPWQE_PPW - 1);
492 u16 pi, contig_wqebbs_room;
497 unlikely(!mlx5e_xsk_pages_enough_umem(rq, MLX5_MPWRQ_PAGES_PER_WQE))) {
502 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
503 contig_wqebbs_room = mlx5_wq_cyc_get_contig_wqebbs(wq, pi);
504 if (unlikely(contig_wqebbs_room < MLX5E_UMR_WQEBBS)) {
505 mlx5e_fill_icosq_frag_edge(sq, wq, pi, contig_wqebbs_room);
506 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
509 umr_wqe = mlx5_wq_cyc_get_wqe(wq, pi);
510 memcpy(umr_wqe, &rq->mpwqe.umr_wqe, offsetof(struct mlx5e_umr_wqe, inline_mtts));
512 for (i = 0; i < MLX5_MPWRQ_PAGES_PER_WQE; i++, dma_info++) {
513 err = mlx5e_page_alloc(rq, dma_info);
516 umr_wqe->inline_mtts[i].ptag = cpu_to_be64(dma_info->addr | MLX5_EN_WR);
519 bitmap_zero(wi->xdp_xmit_bitmap, MLX5_MPWRQ_PAGES_PER_WQE);
520 wi->consumed_strides = 0;
522 umr_wqe->ctrl.opmod_idx_opcode =
523 cpu_to_be32((sq->pc << MLX5_WQE_CTRL_WQE_INDEX_SHIFT) |
525 umr_wqe->uctrl.xlt_offset = cpu_to_be16(xlt_offset);
527 sq->db.ico_wqe[pi].opcode = MLX5_OPCODE_UMR;
528 sq->db.ico_wqe[pi].umr.rq = rq;
529 sq->pc += MLX5E_UMR_WQEBBS;
531 sq->doorbell_cseg = &umr_wqe->ctrl;
538 mlx5e_page_release(rq, dma_info, true);
542 rq->stats->buff_alloc_err++;
547 void mlx5e_dealloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix)
549 struct mlx5e_mpw_info *wi = &rq->mpwqe.info[ix];
550 /* Don't recycle, this function is called on rq/netdev close */
551 mlx5e_free_rx_mpwqe(rq, wi, false);
554 bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq)
556 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
560 if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state)))
563 wqe_bulk = rq->wqe.info.wqe_bulk;
565 if (mlx5_wq_cyc_missing(wq) < wqe_bulk)
569 u16 head = mlx5_wq_cyc_get_head(wq);
571 err = mlx5e_alloc_rx_wqes(rq, head, wqe_bulk);
573 rq->stats->buff_alloc_err++;
577 mlx5_wq_cyc_push_n(wq, wqe_bulk);
578 } while (mlx5_wq_cyc_missing(wq) >= wqe_bulk);
580 /* ensure wqes are visible to device before updating doorbell record */
583 mlx5_wq_cyc_update_db_record(wq);
588 void mlx5e_poll_ico_cq(struct mlx5e_cq *cq)
590 struct mlx5e_icosq *sq = container_of(cq, struct mlx5e_icosq, cq);
591 struct mlx5_cqe64 *cqe;
595 if (unlikely(!test_bit(MLX5E_SQ_STATE_ENABLED, &sq->state)))
598 cqe = mlx5_cqwq_get_cqe(&cq->wq);
602 /* sq->cc must be updated only after mlx5_cqwq_update_db_record(),
603 * otherwise a cq overrun may occur
612 mlx5_cqwq_pop(&cq->wq);
614 wqe_counter = be16_to_cpu(cqe->wqe_counter);
617 struct mlx5e_sq_wqe_info *wi;
620 last_wqe = (sqcc == wqe_counter);
622 ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc);
623 wi = &sq->db.ico_wqe[ci];
625 if (last_wqe && unlikely(get_cqe_opcode(cqe) != MLX5_CQE_REQ)) {
626 netdev_WARN_ONCE(cq->channel->netdev,
627 "Bad OP in ICOSQ CQE: 0x%x\n",
628 get_cqe_opcode(cqe));
629 if (!test_and_set_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state))
630 queue_work(cq->channel->priv->wq, &sq->recover_work);
634 if (likely(wi->opcode == MLX5_OPCODE_UMR)) {
635 sqcc += MLX5E_UMR_WQEBBS;
636 wi->umr.rq->mpwqe.umr_completed++;
637 } else if (likely(wi->opcode == MLX5_OPCODE_NOP)) {
640 netdev_WARN_ONCE(cq->channel->netdev,
641 "Bad OPCODE in ICOSQ WQE info: 0x%x\n",
647 } while ((++i < MLX5E_TX_CQ_POLL_BUDGET) && (cqe = mlx5_cqwq_get_cqe(&cq->wq)));
651 mlx5_cqwq_update_db_record(&cq->wq);
654 bool mlx5e_post_rx_mpwqes(struct mlx5e_rq *rq)
656 struct mlx5e_icosq *sq = &rq->channel->icosq;
657 struct mlx5_wq_ll *wq = &rq->mpwqe.wq;
658 u8 umr_completed = rq->mpwqe.umr_completed;
663 if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state)))
667 mlx5e_post_rx_mpwqe(rq, umr_completed);
668 rq->mpwqe.umr_in_progress -= umr_completed;
669 rq->mpwqe.umr_completed = 0;
672 missing = mlx5_wq_ll_missing(wq) - rq->mpwqe.umr_in_progress;
674 if (unlikely(rq->mpwqe.umr_in_progress > rq->mpwqe.umr_last_bulk))
675 rq->stats->congst_umr++;
677 #define UMR_WQE_BULK (2)
678 if (likely(missing < UMR_WQE_BULK))
681 head = rq->mpwqe.actual_wq_head;
684 alloc_err = mlx5e_alloc_rx_mpwqe(rq, head);
686 if (unlikely(alloc_err))
688 head = mlx5_wq_ll_get_wqe_next_ix(wq, head);
691 rq->mpwqe.umr_last_bulk = missing - i;
692 if (sq->doorbell_cseg) {
693 mlx5e_notify_hw(&sq->wq, sq->pc, sq->uar_map, sq->doorbell_cseg);
694 sq->doorbell_cseg = NULL;
697 rq->mpwqe.umr_in_progress += rq->mpwqe.umr_last_bulk;
698 rq->mpwqe.actual_wq_head = head;
700 /* If XSK Fill Ring doesn't have enough frames, report the error, so
701 * that one of the actions can be performed:
702 * 1. If need_wakeup is used, signal that the application has to kick
703 * the driver when it refills the Fill Ring.
704 * 2. Otherwise, busy poll by rescheduling the NAPI poll.
706 if (unlikely(alloc_err == -ENOMEM && rq->umem))
712 static void mlx5e_lro_update_tcp_hdr(struct mlx5_cqe64 *cqe, struct tcphdr *tcp)
714 u8 l4_hdr_type = get_cqe_l4_hdr_type(cqe);
715 u8 tcp_ack = (l4_hdr_type == CQE_L4_HDR_TYPE_TCP_ACK_NO_DATA) ||
716 (l4_hdr_type == CQE_L4_HDR_TYPE_TCP_ACK_AND_DATA);
719 tcp->psh = get_cqe_lro_tcppsh(cqe);
723 tcp->ack_seq = cqe->lro_ack_seq_num;
724 tcp->window = cqe->lro_tcp_win;
728 static void mlx5e_lro_update_hdr(struct sk_buff *skb, struct mlx5_cqe64 *cqe,
731 struct ethhdr *eth = (struct ethhdr *)(skb->data);
733 int network_depth = 0;
739 proto = __vlan_get_protocol(skb, eth->h_proto, &network_depth);
741 tot_len = cqe_bcnt - network_depth;
742 ip_p = skb->data + network_depth;
744 if (proto == htons(ETH_P_IP)) {
745 struct iphdr *ipv4 = ip_p;
747 tcp = ip_p + sizeof(struct iphdr);
748 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
750 ipv4->ttl = cqe->lro_min_ttl;
751 ipv4->tot_len = cpu_to_be16(tot_len);
753 ipv4->check = ip_fast_csum((unsigned char *)ipv4,
756 mlx5e_lro_update_tcp_hdr(cqe, tcp);
757 check = csum_partial(tcp, tcp->doff * 4,
758 csum_unfold((__force __sum16)cqe->check_sum));
759 /* Almost done, don't forget the pseudo header */
760 tcp->check = csum_tcpudp_magic(ipv4->saddr, ipv4->daddr,
761 tot_len - sizeof(struct iphdr),
764 u16 payload_len = tot_len - sizeof(struct ipv6hdr);
765 struct ipv6hdr *ipv6 = ip_p;
767 tcp = ip_p + sizeof(struct ipv6hdr);
768 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
770 ipv6->hop_limit = cqe->lro_min_ttl;
771 ipv6->payload_len = cpu_to_be16(payload_len);
773 mlx5e_lro_update_tcp_hdr(cqe, tcp);
774 check = csum_partial(tcp, tcp->doff * 4,
775 csum_unfold((__force __sum16)cqe->check_sum));
776 /* Almost done, don't forget the pseudo header */
777 tcp->check = csum_ipv6_magic(&ipv6->saddr, &ipv6->daddr, payload_len,
782 static inline void mlx5e_skb_set_hash(struct mlx5_cqe64 *cqe,
785 u8 cht = cqe->rss_hash_type;
786 int ht = (cht & CQE_RSS_HTYPE_L4) ? PKT_HASH_TYPE_L4 :
787 (cht & CQE_RSS_HTYPE_IP) ? PKT_HASH_TYPE_L3 :
789 skb_set_hash(skb, be32_to_cpu(cqe->rss_hash_result), ht);
792 static inline bool is_last_ethertype_ip(struct sk_buff *skb, int *network_depth,
795 *proto = ((struct ethhdr *)skb->data)->h_proto;
796 *proto = __vlan_get_protocol(skb, *proto, network_depth);
798 if (*proto == htons(ETH_P_IP))
799 return pskb_may_pull(skb, *network_depth + sizeof(struct iphdr));
801 if (*proto == htons(ETH_P_IPV6))
802 return pskb_may_pull(skb, *network_depth + sizeof(struct ipv6hdr));
807 static inline void mlx5e_enable_ecn(struct mlx5e_rq *rq, struct sk_buff *skb)
809 int network_depth = 0;
814 if (unlikely(!is_last_ethertype_ip(skb, &network_depth, &proto)))
817 ip = skb->data + network_depth;
818 rc = ((proto == htons(ETH_P_IP)) ? IP_ECN_set_ce((struct iphdr *)ip) :
819 IP6_ECN_set_ce(skb, (struct ipv6hdr *)ip));
821 rq->stats->ecn_mark += !!rc;
824 static u8 get_ip_proto(struct sk_buff *skb, int network_depth, __be16 proto)
826 void *ip_p = skb->data + network_depth;
828 return (proto == htons(ETH_P_IP)) ? ((struct iphdr *)ip_p)->protocol :
829 ((struct ipv6hdr *)ip_p)->nexthdr;
832 #define short_frame(size) ((size) <= ETH_ZLEN + ETH_FCS_LEN)
834 #define MAX_PADDING 8
837 tail_padding_csum_slow(struct sk_buff *skb, int offset, int len,
838 struct mlx5e_rq_stats *stats)
840 stats->csum_complete_tail_slow++;
841 skb->csum = csum_block_add(skb->csum,
842 skb_checksum(skb, offset, len, 0),
847 tail_padding_csum(struct sk_buff *skb, int offset,
848 struct mlx5e_rq_stats *stats)
850 u8 tail_padding[MAX_PADDING];
851 int len = skb->len - offset;
854 if (unlikely(len > MAX_PADDING)) {
855 tail_padding_csum_slow(skb, offset, len, stats);
859 tail = skb_header_pointer(skb, offset, len, tail_padding);
860 if (unlikely(!tail)) {
861 tail_padding_csum_slow(skb, offset, len, stats);
865 stats->csum_complete_tail++;
866 skb->csum = csum_block_add(skb->csum, csum_partial(tail, len, 0), offset);
870 mlx5e_skb_csum_fixup(struct sk_buff *skb, int network_depth, __be16 proto,
871 struct mlx5e_rq_stats *stats)
877 /* Fixup vlan headers, if any */
878 if (network_depth > ETH_HLEN)
879 /* CQE csum is calculated from the IP header and does
880 * not cover VLAN headers (if present). This will add
881 * the checksum manually.
883 skb->csum = csum_partial(skb->data + ETH_HLEN,
884 network_depth - ETH_HLEN,
887 /* Fixup tail padding, if any */
889 case htons(ETH_P_IP):
890 ip4 = (struct iphdr *)(skb->data + network_depth);
891 pkt_len = network_depth + ntohs(ip4->tot_len);
893 case htons(ETH_P_IPV6):
894 ip6 = (struct ipv6hdr *)(skb->data + network_depth);
895 pkt_len = network_depth + sizeof(*ip6) + ntohs(ip6->payload_len);
901 if (likely(pkt_len >= skb->len))
904 tail_padding_csum(skb, pkt_len, stats);
907 static inline void mlx5e_handle_csum(struct net_device *netdev,
908 struct mlx5_cqe64 *cqe,
913 struct mlx5e_rq_stats *stats = rq->stats;
914 int network_depth = 0;
917 if (unlikely(!(netdev->features & NETIF_F_RXCSUM)))
921 skb->ip_summed = CHECKSUM_UNNECESSARY;
922 stats->csum_unnecessary++;
926 /* True when explicitly set via priv flag, or XDP prog is loaded */
927 if (test_bit(MLX5E_RQ_STATE_NO_CSUM_COMPLETE, &rq->state))
928 goto csum_unnecessary;
930 /* CQE csum doesn't cover padding octets in short ethernet
931 * frames. And the pad field is appended prior to calculating
932 * and appending the FCS field.
934 * Detecting these padded frames requires to verify and parse
935 * IP headers, so we simply force all those small frames to be
936 * CHECKSUM_UNNECESSARY even if they are not padded.
938 if (short_frame(skb->len))
939 goto csum_unnecessary;
941 if (likely(is_last_ethertype_ip(skb, &network_depth, &proto))) {
942 if (unlikely(get_ip_proto(skb, network_depth, proto) == IPPROTO_SCTP))
943 goto csum_unnecessary;
945 stats->csum_complete++;
946 skb->ip_summed = CHECKSUM_COMPLETE;
947 skb->csum = csum_unfold((__force __sum16)cqe->check_sum);
949 if (test_bit(MLX5E_RQ_STATE_CSUM_FULL, &rq->state))
950 return; /* CQE csum covers all received bytes */
952 /* csum might need some fixups ...*/
953 mlx5e_skb_csum_fixup(skb, network_depth, proto, stats);
958 if (likely((cqe->hds_ip_ext & CQE_L3_OK) &&
959 (cqe->hds_ip_ext & CQE_L4_OK))) {
960 skb->ip_summed = CHECKSUM_UNNECESSARY;
961 if (cqe_is_tunneled(cqe)) {
963 skb->encapsulation = 1;
964 stats->csum_unnecessary_inner++;
967 stats->csum_unnecessary++;
971 skb->ip_summed = CHECKSUM_NONE;
975 #define MLX5E_CE_BIT_MASK 0x80
977 static inline void mlx5e_build_rx_skb(struct mlx5_cqe64 *cqe,
982 u8 lro_num_seg = be32_to_cpu(cqe->srqn) >> 24;
983 struct mlx5e_rq_stats *stats = rq->stats;
984 struct net_device *netdev = rq->netdev;
986 skb->mac_len = ETH_HLEN;
988 #ifdef CONFIG_MLX5_EN_TLS
989 mlx5e_tls_handle_rx_skb(netdev, skb, &cqe_bcnt);
992 if (lro_num_seg > 1) {
993 mlx5e_lro_update_hdr(skb, cqe, cqe_bcnt);
994 skb_shinfo(skb)->gso_size = DIV_ROUND_UP(cqe_bcnt, lro_num_seg);
995 /* Subtract one since we already counted this as one
996 * "regular" packet in mlx5e_complete_rx_cqe()
998 stats->packets += lro_num_seg - 1;
999 stats->lro_packets++;
1000 stats->lro_bytes += cqe_bcnt;
1003 if (unlikely(mlx5e_rx_hw_stamp(rq->tstamp)))
1004 skb_hwtstamps(skb)->hwtstamp =
1005 mlx5_timecounter_cyc2time(rq->clock, get_cqe_ts(cqe));
1007 skb_record_rx_queue(skb, rq->ix);
1009 if (likely(netdev->features & NETIF_F_RXHASH))
1010 mlx5e_skb_set_hash(cqe, skb);
1012 if (cqe_has_vlan(cqe)) {
1013 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
1014 be16_to_cpu(cqe->vlan_info));
1015 stats->removed_vlan_packets++;
1018 skb->mark = be32_to_cpu(cqe->sop_drop_qpn) & MLX5E_TC_FLOW_ID_MASK;
1020 mlx5e_handle_csum(netdev, cqe, rq, skb, !!lro_num_seg);
1021 /* checking CE bit in cqe - MSB in ml_path field */
1022 if (unlikely(cqe->ml_path & MLX5E_CE_BIT_MASK))
1023 mlx5e_enable_ecn(rq, skb);
1025 skb->protocol = eth_type_trans(skb, netdev);
1028 static inline void mlx5e_complete_rx_cqe(struct mlx5e_rq *rq,
1029 struct mlx5_cqe64 *cqe,
1031 struct sk_buff *skb)
1033 struct mlx5e_rq_stats *stats = rq->stats;
1036 stats->bytes += cqe_bcnt;
1037 mlx5e_build_rx_skb(cqe, cqe_bcnt, rq, skb);
1041 struct sk_buff *mlx5e_build_linear_skb(struct mlx5e_rq *rq, void *va,
1042 u32 frag_size, u16 headroom,
1045 struct sk_buff *skb = build_skb(va, frag_size);
1047 if (unlikely(!skb)) {
1048 rq->stats->buff_alloc_err++;
1052 skb_reserve(skb, headroom);
1053 skb_put(skb, cqe_bcnt);
1059 mlx5e_skb_from_cqe_linear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe,
1060 struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt)
1062 struct mlx5e_dma_info *di = wi->di;
1063 u16 rx_headroom = rq->buff.headroom;
1064 struct sk_buff *skb;
1069 va = page_address(di->page) + wi->offset;
1070 data = va + rx_headroom;
1071 frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt);
1073 dma_sync_single_range_for_cpu(rq->pdev, di->addr, wi->offset,
1074 frag_size, DMA_FROM_DEVICE);
1075 prefetchw(va); /* xdp_frame data area */
1079 consumed = mlx5e_xdp_handle(rq, di, va, &rx_headroom, &cqe_bcnt, false);
1082 return NULL; /* page/packet was consumed by XDP */
1084 skb = mlx5e_build_linear_skb(rq, va, frag_size, rx_headroom, cqe_bcnt);
1088 /* queue up for recycling/reuse */
1089 page_ref_inc(di->page);
1095 mlx5e_skb_from_cqe_nonlinear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe,
1096 struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt)
1098 struct mlx5e_rq_frag_info *frag_info = &rq->wqe.info.arr[0];
1099 struct mlx5e_wqe_frag_info *head_wi = wi;
1100 u16 headlen = min_t(u32, MLX5E_RX_MAX_HEAD, cqe_bcnt);
1101 u16 frag_headlen = headlen;
1102 u16 byte_cnt = cqe_bcnt - headlen;
1103 struct sk_buff *skb;
1105 /* XDP is not supported in this configuration, as incoming packets
1106 * might spread among multiple pages.
1108 skb = napi_alloc_skb(rq->cq.napi,
1109 ALIGN(MLX5E_RX_MAX_HEAD, sizeof(long)));
1110 if (unlikely(!skb)) {
1111 rq->stats->buff_alloc_err++;
1115 prefetchw(skb->data);
1118 u16 frag_consumed_bytes =
1119 min_t(u16, frag_info->frag_size - frag_headlen, byte_cnt);
1121 mlx5e_add_skb_frag(rq, skb, wi->di, wi->offset + frag_headlen,
1122 frag_consumed_bytes, frag_info->frag_stride);
1123 byte_cnt -= frag_consumed_bytes;
1130 mlx5e_copy_skb_header(rq->pdev, skb, head_wi->di, head_wi->offset, headlen);
1131 /* skb linear part was allocated with headlen and aligned to long */
1132 skb->tail += headlen;
1133 skb->len += headlen;
1138 static void trigger_report(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1140 struct mlx5_err_cqe *err_cqe = (struct mlx5_err_cqe *)cqe;
1142 if (cqe_syndrome_needs_recover(err_cqe->syndrome) &&
1143 !test_and_set_bit(MLX5E_RQ_STATE_RECOVERING, &rq->state))
1144 queue_work(rq->channel->priv->wq, &rq->recover_work);
1147 void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1149 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1150 struct mlx5e_wqe_frag_info *wi;
1151 struct sk_buff *skb;
1155 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1156 wi = get_frag(rq, ci);
1157 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1159 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1160 trigger_report(rq, cqe);
1161 rq->stats->wqe_err++;
1165 skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe,
1166 mlx5e_skb_from_cqe_linear,
1167 mlx5e_skb_from_cqe_nonlinear,
1168 rq, cqe, wi, cqe_bcnt);
1170 /* probably for XDP */
1171 if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) {
1172 /* do not return page to cache,
1173 * it will be returned on XDP_TX completion.
1180 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1181 napi_gro_receive(rq->cq.napi, skb);
1184 mlx5e_free_rx_wqe(rq, wi, true);
1186 mlx5_wq_cyc_pop(wq);
1189 #ifdef CONFIG_MLX5_ESWITCH
1190 void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1192 struct net_device *netdev = rq->netdev;
1193 struct mlx5e_priv *priv = netdev_priv(netdev);
1194 struct mlx5e_rep_priv *rpriv = priv->ppriv;
1195 struct mlx5_eswitch_rep *rep = rpriv->rep;
1196 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1197 struct mlx5e_wqe_frag_info *wi;
1198 struct sk_buff *skb;
1202 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1203 wi = get_frag(rq, ci);
1204 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1206 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1207 rq->stats->wqe_err++;
1211 skb = rq->wqe.skb_from_cqe(rq, cqe, wi, cqe_bcnt);
1213 /* probably for XDP */
1214 if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) {
1215 /* do not return page to cache,
1216 * it will be returned on XDP_TX completion.
1223 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1225 if (rep->vlan && skb_vlan_tag_present(skb))
1228 napi_gro_receive(rq->cq.napi, skb);
1231 mlx5e_free_rx_wqe(rq, wi, true);
1233 mlx5_wq_cyc_pop(wq);
1238 mlx5e_skb_from_cqe_mpwrq_nonlinear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi,
1239 u16 cqe_bcnt, u32 head_offset, u32 page_idx)
1241 u16 headlen = min_t(u16, MLX5E_RX_MAX_HEAD, cqe_bcnt);
1242 struct mlx5e_dma_info *di = &wi->umr.dma_info[page_idx];
1243 u32 frag_offset = head_offset + headlen;
1244 u32 byte_cnt = cqe_bcnt - headlen;
1245 struct mlx5e_dma_info *head_di = di;
1246 struct sk_buff *skb;
1248 skb = napi_alloc_skb(rq->cq.napi,
1249 ALIGN(MLX5E_RX_MAX_HEAD, sizeof(long)));
1250 if (unlikely(!skb)) {
1251 rq->stats->buff_alloc_err++;
1255 prefetchw(skb->data);
1257 if (unlikely(frag_offset >= PAGE_SIZE)) {
1259 frag_offset -= PAGE_SIZE;
1263 u32 pg_consumed_bytes =
1264 min_t(u32, PAGE_SIZE - frag_offset, byte_cnt);
1265 unsigned int truesize =
1266 ALIGN(pg_consumed_bytes, BIT(rq->mpwqe.log_stride_sz));
1268 mlx5e_add_skb_frag(rq, skb, di, frag_offset,
1269 pg_consumed_bytes, truesize);
1270 byte_cnt -= pg_consumed_bytes;
1275 mlx5e_copy_skb_header(rq->pdev, skb, head_di, head_offset, headlen);
1276 /* skb linear part was allocated with headlen and aligned to long */
1277 skb->tail += headlen;
1278 skb->len += headlen;
1284 mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi,
1285 u16 cqe_bcnt, u32 head_offset, u32 page_idx)
1287 struct mlx5e_dma_info *di = &wi->umr.dma_info[page_idx];
1288 u16 rx_headroom = rq->buff.headroom;
1289 u32 cqe_bcnt32 = cqe_bcnt;
1290 struct sk_buff *skb;
1295 /* Check packet size. Note LRO doesn't use linear SKB */
1296 if (unlikely(cqe_bcnt > rq->hw_mtu)) {
1297 rq->stats->oversize_pkts_sw_drop++;
1301 va = page_address(di->page) + head_offset;
1302 data = va + rx_headroom;
1303 frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt32);
1305 dma_sync_single_range_for_cpu(rq->pdev, di->addr, head_offset,
1306 frag_size, DMA_FROM_DEVICE);
1307 prefetchw(va); /* xdp_frame data area */
1311 consumed = mlx5e_xdp_handle(rq, di, va, &rx_headroom, &cqe_bcnt32, false);
1314 if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags))
1315 __set_bit(page_idx, wi->xdp_xmit_bitmap); /* non-atomic */
1316 return NULL; /* page/packet was consumed by XDP */
1319 skb = mlx5e_build_linear_skb(rq, va, frag_size, rx_headroom, cqe_bcnt32);
1323 /* queue up for recycling/reuse */
1324 page_ref_inc(di->page);
1329 void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1331 u16 cstrides = mpwrq_get_cqe_consumed_strides(cqe);
1332 u16 wqe_id = be16_to_cpu(cqe->wqe_id);
1333 struct mlx5e_mpw_info *wi = &rq->mpwqe.info[wqe_id];
1334 u16 stride_ix = mpwrq_get_cqe_stride_index(cqe);
1335 u32 wqe_offset = stride_ix << rq->mpwqe.log_stride_sz;
1336 u32 head_offset = wqe_offset & (PAGE_SIZE - 1);
1337 u32 page_idx = wqe_offset >> PAGE_SHIFT;
1338 struct mlx5e_rx_wqe_ll *wqe;
1339 struct mlx5_wq_ll *wq;
1340 struct sk_buff *skb;
1343 wi->consumed_strides += cstrides;
1345 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1346 trigger_report(rq, cqe);
1347 rq->stats->wqe_err++;
1351 if (unlikely(mpwrq_is_filler_cqe(cqe))) {
1352 struct mlx5e_rq_stats *stats = rq->stats;
1354 stats->mpwqe_filler_cqes++;
1355 stats->mpwqe_filler_strides += cstrides;
1359 cqe_bcnt = mpwrq_get_cqe_byte_cnt(cqe);
1361 skb = INDIRECT_CALL_2(rq->mpwqe.skb_from_cqe_mpwrq,
1362 mlx5e_skb_from_cqe_mpwrq_linear,
1363 mlx5e_skb_from_cqe_mpwrq_nonlinear,
1364 rq, wi, cqe_bcnt, head_offset, page_idx);
1368 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1369 napi_gro_receive(rq->cq.napi, skb);
1372 if (likely(wi->consumed_strides < rq->mpwqe.num_strides))
1376 wqe = mlx5_wq_ll_get_wqe(wq, wqe_id);
1377 mlx5e_free_rx_mpwqe(rq, wi, true);
1378 mlx5_wq_ll_pop(wq, cqe->wqe_id, &wqe->next.next_wqe_index);
1381 int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget)
1383 struct mlx5e_rq *rq = container_of(cq, struct mlx5e_rq, cq);
1384 struct mlx5_cqwq *cqwq = &cq->wq;
1385 struct mlx5_cqe64 *cqe;
1388 if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state)))
1392 page_pool_nid_changed(rq->page_pool, numa_mem_id());
1395 work_done += mlx5e_decompress_cqes_cont(rq, cqwq, 0, budget);
1396 if (rq->cqd.left || work_done >= budget)
1400 cqe = mlx5_cqwq_get_cqe(cqwq);
1402 if (unlikely(work_done))
1408 if (mlx5_get_cqe_format(cqe) == MLX5_COMPRESSED) {
1410 mlx5e_decompress_cqes_start(rq, cqwq,
1411 budget - work_done);
1415 mlx5_cqwq_pop(cqwq);
1417 INDIRECT_CALL_2(rq->handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq,
1418 mlx5e_handle_rx_cqe, rq, cqe);
1419 } while ((++work_done < budget) && (cqe = mlx5_cqwq_get_cqe(cqwq)));
1423 mlx5e_xdp_rx_poll_complete(rq);
1425 mlx5_cqwq_update_db_record(cqwq);
1427 /* ensure cq space is freed before enabling more cqes */
1433 #ifdef CONFIG_MLX5_CORE_IPOIB
1435 #define MLX5_IB_GRH_DGID_OFFSET 24
1436 #define MLX5_GID_SIZE 16
1438 static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,
1439 struct mlx5_cqe64 *cqe,
1441 struct sk_buff *skb)
1443 struct hwtstamp_config *tstamp;
1444 struct mlx5e_rq_stats *stats;
1445 struct net_device *netdev;
1446 struct mlx5e_priv *priv;
1447 char *pseudo_header;
1452 qpn = be32_to_cpu(cqe->sop_drop_qpn) & 0xffffff;
1453 netdev = mlx5i_pkey_get_netdev(rq->netdev, qpn);
1455 /* No mapping present, cannot process SKB. This might happen if a child
1456 * interface is going down while having unprocessed CQEs on parent RQ
1458 if (unlikely(!netdev)) {
1459 /* TODO: add drop counters support */
1461 pr_warn_once("Unable to map QPN %u to dev - dropping skb\n", qpn);
1465 priv = mlx5i_epriv(netdev);
1466 tstamp = &priv->tstamp;
1467 stats = &priv->channel_stats[rq->ix].rq;
1469 g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3;
1470 dgid = skb->data + MLX5_IB_GRH_DGID_OFFSET;
1471 if ((!g) || dgid[0] != 0xff)
1472 skb->pkt_type = PACKET_HOST;
1473 else if (memcmp(dgid, netdev->broadcast + 4, MLX5_GID_SIZE) == 0)
1474 skb->pkt_type = PACKET_BROADCAST;
1476 skb->pkt_type = PACKET_MULTICAST;
1478 /* TODO: IB/ipoib: Allow mcast packets from other VFs
1479 * 68996a6e760e5c74654723eeb57bf65628ae87f4
1482 skb_pull(skb, MLX5_IB_GRH_BYTES);
1484 skb->protocol = *((__be16 *)(skb->data));
1486 if (netdev->features & NETIF_F_RXCSUM) {
1487 skb->ip_summed = CHECKSUM_COMPLETE;
1488 skb->csum = csum_unfold((__force __sum16)cqe->check_sum);
1489 stats->csum_complete++;
1491 skb->ip_summed = CHECKSUM_NONE;
1495 if (unlikely(mlx5e_rx_hw_stamp(tstamp)))
1496 skb_hwtstamps(skb)->hwtstamp =
1497 mlx5_timecounter_cyc2time(rq->clock, get_cqe_ts(cqe));
1499 skb_record_rx_queue(skb, rq->ix);
1501 if (likely(netdev->features & NETIF_F_RXHASH))
1502 mlx5e_skb_set_hash(cqe, skb);
1504 /* 20 bytes of ipoib header and 4 for encap existing */
1505 pseudo_header = skb_push(skb, MLX5_IPOIB_PSEUDO_LEN);
1506 memset(pseudo_header, 0, MLX5_IPOIB_PSEUDO_LEN);
1507 skb_reset_mac_header(skb);
1508 skb_pull(skb, MLX5_IPOIB_HARD_LEN);
1513 stats->bytes += cqe_bcnt;
1516 void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1518 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1519 struct mlx5e_wqe_frag_info *wi;
1520 struct sk_buff *skb;
1524 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1525 wi = get_frag(rq, ci);
1526 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1528 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1529 rq->stats->wqe_err++;
1533 skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe,
1534 mlx5e_skb_from_cqe_linear,
1535 mlx5e_skb_from_cqe_nonlinear,
1536 rq, cqe, wi, cqe_bcnt);
1540 mlx5i_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1541 if (unlikely(!skb->dev)) {
1542 dev_kfree_skb_any(skb);
1545 napi_gro_receive(rq->cq.napi, skb);
1548 mlx5e_free_rx_wqe(rq, wi, true);
1549 mlx5_wq_cyc_pop(wq);
1552 #endif /* CONFIG_MLX5_CORE_IPOIB */
1554 #ifdef CONFIG_MLX5_EN_IPSEC
1556 void mlx5e_ipsec_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1558 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1559 struct mlx5e_wqe_frag_info *wi;
1560 struct sk_buff *skb;
1564 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1565 wi = get_frag(rq, ci);
1566 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1568 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1569 rq->stats->wqe_err++;
1573 skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe,
1574 mlx5e_skb_from_cqe_linear,
1575 mlx5e_skb_from_cqe_nonlinear,
1576 rq, cqe, wi, cqe_bcnt);
1577 if (unlikely(!skb)) /* a DROP, save the page-reuse checks */
1580 skb = mlx5e_ipsec_handle_rx_skb(rq->netdev, skb, &cqe_bcnt);
1584 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1585 napi_gro_receive(rq->cq.napi, skb);
1588 mlx5e_free_rx_wqe(rq, wi, true);
1589 mlx5_wq_cyc_pop(wq);
1592 #endif /* CONFIG_MLX5_EN_IPSEC */