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 INDIRECT_CALL_2(rq->handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq,
162 mlx5e_handle_rx_cqe, rq, &cqd->title);
164 mlx5e_cqes_update_owner(wq, cqcc - wq->cc);
166 cqd->left -= cqe_count;
167 rq->stats->cqe_compress_pkts += cqe_count;
172 static inline u32 mlx5e_decompress_cqes_start(struct mlx5e_rq *rq,
173 struct mlx5_cqwq *wq,
176 struct mlx5e_cq_decomp *cqd = &rq->cqd;
179 mlx5e_read_title_slot(rq, wq, cc);
180 mlx5e_read_mini_arr_slot(wq, cqd, cc + 1);
181 mlx5e_decompress_cqe(rq, wq, cc);
182 INDIRECT_CALL_2(rq->handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq,
183 mlx5e_handle_rx_cqe, rq, &cqd->title);
186 return mlx5e_decompress_cqes_cont(rq, wq, 1, budget_rem) - 1;
189 static inline bool mlx5e_page_is_reserved(struct page *page)
191 return page_is_pfmemalloc(page) || page_to_nid(page) != numa_mem_id();
194 static inline bool mlx5e_rx_cache_put(struct mlx5e_rq *rq,
195 struct mlx5e_dma_info *dma_info)
197 struct mlx5e_page_cache *cache = &rq->page_cache;
198 u32 tail_next = (cache->tail + 1) & (MLX5E_CACHE_SIZE - 1);
199 struct mlx5e_rq_stats *stats = rq->stats;
201 if (tail_next == cache->head) {
206 if (unlikely(mlx5e_page_is_reserved(dma_info->page))) {
207 stats->cache_waive++;
211 cache->page_cache[cache->tail] = *dma_info;
212 cache->tail = tail_next;
216 static inline bool mlx5e_rx_cache_get(struct mlx5e_rq *rq,
217 struct mlx5e_dma_info *dma_info)
219 struct mlx5e_page_cache *cache = &rq->page_cache;
220 struct mlx5e_rq_stats *stats = rq->stats;
222 if (unlikely(cache->head == cache->tail)) {
223 stats->cache_empty++;
227 if (page_ref_count(cache->page_cache[cache->head].page) != 1) {
232 *dma_info = cache->page_cache[cache->head];
233 cache->head = (cache->head + 1) & (MLX5E_CACHE_SIZE - 1);
234 stats->cache_reuse++;
236 dma_sync_single_for_device(rq->pdev, dma_info->addr,
242 static inline int mlx5e_page_alloc_pool(struct mlx5e_rq *rq,
243 struct mlx5e_dma_info *dma_info)
245 if (mlx5e_rx_cache_get(rq, dma_info))
248 dma_info->page = page_pool_dev_alloc_pages(rq->page_pool);
249 if (unlikely(!dma_info->page))
252 dma_info->addr = dma_map_page(rq->pdev, dma_info->page, 0,
253 PAGE_SIZE, rq->buff.map_dir);
254 if (unlikely(dma_mapping_error(rq->pdev, dma_info->addr))) {
255 page_pool_recycle_direct(rq->page_pool, dma_info->page);
256 dma_info->page = NULL;
263 static inline int mlx5e_page_alloc(struct mlx5e_rq *rq,
264 struct mlx5e_dma_info *dma_info)
267 return mlx5e_xsk_page_alloc_umem(rq, dma_info);
269 return mlx5e_page_alloc_pool(rq, dma_info);
272 void mlx5e_page_dma_unmap(struct mlx5e_rq *rq, struct mlx5e_dma_info *dma_info)
274 dma_unmap_page(rq->pdev, dma_info->addr, PAGE_SIZE, rq->buff.map_dir);
277 void mlx5e_page_release_dynamic(struct mlx5e_rq *rq,
278 struct mlx5e_dma_info *dma_info,
281 if (likely(recycle)) {
282 if (mlx5e_rx_cache_put(rq, dma_info))
285 mlx5e_page_dma_unmap(rq, dma_info);
286 page_pool_recycle_direct(rq->page_pool, dma_info->page);
288 mlx5e_page_dma_unmap(rq, dma_info);
289 page_pool_release_page(rq->page_pool, dma_info->page);
290 put_page(dma_info->page);
294 static inline void mlx5e_page_release(struct mlx5e_rq *rq,
295 struct mlx5e_dma_info *dma_info,
299 /* The `recycle` parameter is ignored, and the page is always
300 * put into the Reuse Ring, because there is no way to return
301 * the page to the userspace when the interface goes down.
303 mlx5e_xsk_page_release(rq, dma_info);
305 mlx5e_page_release_dynamic(rq, dma_info, recycle);
308 static inline int mlx5e_get_rx_frag(struct mlx5e_rq *rq,
309 struct mlx5e_wqe_frag_info *frag)
314 /* On first frag (offset == 0), replenish page (dma_info actually).
315 * Other frags that point to the same dma_info (with a different
316 * offset) should just use the new one without replenishing again
319 err = mlx5e_page_alloc(rq, frag->di);
324 static inline void mlx5e_put_rx_frag(struct mlx5e_rq *rq,
325 struct mlx5e_wqe_frag_info *frag,
328 if (frag->last_in_page)
329 mlx5e_page_release(rq, frag->di, recycle);
332 static inline struct mlx5e_wqe_frag_info *get_frag(struct mlx5e_rq *rq, u16 ix)
334 return &rq->wqe.frags[ix << rq->wqe.info.log_num_frags];
337 static int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe_cyc *wqe,
340 struct mlx5e_wqe_frag_info *frag = get_frag(rq, ix);
344 for (i = 0; i < rq->wqe.info.num_frags; i++, frag++) {
345 err = mlx5e_get_rx_frag(rq, frag);
349 wqe->data[i].addr = cpu_to_be64(frag->di->addr +
350 frag->offset + rq->buff.headroom);
357 mlx5e_put_rx_frag(rq, --frag, true);
362 static inline void mlx5e_free_rx_wqe(struct mlx5e_rq *rq,
363 struct mlx5e_wqe_frag_info *wi,
368 for (i = 0; i < rq->wqe.info.num_frags; i++, wi++)
369 mlx5e_put_rx_frag(rq, wi, recycle);
372 void mlx5e_dealloc_rx_wqe(struct mlx5e_rq *rq, u16 ix)
374 struct mlx5e_wqe_frag_info *wi = get_frag(rq, ix);
376 mlx5e_free_rx_wqe(rq, wi, false);
379 static int mlx5e_alloc_rx_wqes(struct mlx5e_rq *rq, u16 ix, u8 wqe_bulk)
381 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
386 int pages_desired = wqe_bulk << rq->wqe.info.log_num_frags;
388 if (unlikely(!mlx5e_xsk_pages_enough_umem(rq, pages_desired)))
392 for (i = 0; i < wqe_bulk; i++) {
393 struct mlx5e_rx_wqe_cyc *wqe = mlx5_wq_cyc_get_wqe(wq, ix + i);
395 err = mlx5e_alloc_rx_wqe(rq, wqe, ix + i);
404 mlx5e_dealloc_rx_wqe(rq, ix + i);
410 mlx5e_add_skb_frag(struct mlx5e_rq *rq, struct sk_buff *skb,
411 struct mlx5e_dma_info *di, u32 frag_offset, u32 len,
412 unsigned int truesize)
414 dma_sync_single_for_cpu(rq->pdev,
415 di->addr + frag_offset,
416 len, DMA_FROM_DEVICE);
417 page_ref_inc(di->page);
418 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
419 di->page, frag_offset, len, truesize);
423 mlx5e_copy_skb_header(struct device *pdev, struct sk_buff *skb,
424 struct mlx5e_dma_info *dma_info,
425 int offset_from, u32 headlen)
427 const void *from = page_address(dma_info->page) + offset_from;
428 /* Aligning len to sizeof(long) optimizes memcpy performance */
429 unsigned int len = ALIGN(headlen, sizeof(long));
431 dma_sync_single_for_cpu(pdev, dma_info->addr + offset_from, len,
433 skb_copy_to_linear_data(skb, from, len);
437 mlx5e_free_rx_mpwqe(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, bool recycle)
440 struct mlx5e_dma_info *dma_info = wi->umr.dma_info;
443 /* A common case for AF_XDP. */
444 if (bitmap_full(wi->xdp_xmit_bitmap, MLX5_MPWRQ_PAGES_PER_WQE))
447 no_xdp_xmit = bitmap_empty(wi->xdp_xmit_bitmap,
448 MLX5_MPWRQ_PAGES_PER_WQE);
450 for (i = 0; i < MLX5_MPWRQ_PAGES_PER_WQE; i++)
451 if (no_xdp_xmit || !test_bit(i, wi->xdp_xmit_bitmap))
452 mlx5e_page_release(rq, &dma_info[i], recycle);
455 static void mlx5e_post_rx_mpwqe(struct mlx5e_rq *rq, u8 n)
457 struct mlx5_wq_ll *wq = &rq->mpwqe.wq;
460 u16 next_wqe_index = mlx5_wq_ll_get_wqe_next_ix(wq, wq->head);
462 mlx5_wq_ll_push(wq, next_wqe_index);
465 /* ensure wqes are visible to device before updating doorbell record */
468 mlx5_wq_ll_update_db_record(wq);
471 static inline void mlx5e_fill_icosq_frag_edge(struct mlx5e_icosq *sq,
472 struct mlx5_wq_cyc *wq,
475 struct mlx5e_sq_wqe_info *edge_wi, *wi = &sq->db.ico_wqe[pi];
477 edge_wi = wi + nnops;
479 /* fill sq frag edge with nops to avoid wqe wrapping two pages */
480 for (; wi < edge_wi; wi++) {
481 wi->opcode = MLX5_OPCODE_NOP;
483 mlx5e_post_nop(wq, sq->sqn, &sq->pc);
487 static int mlx5e_alloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix)
489 struct mlx5e_mpw_info *wi = &rq->mpwqe.info[ix];
490 struct mlx5e_dma_info *dma_info = &wi->umr.dma_info[0];
491 struct mlx5e_icosq *sq = &rq->channel->icosq;
492 struct mlx5_wq_cyc *wq = &sq->wq;
493 struct mlx5e_umr_wqe *umr_wqe;
494 u16 xlt_offset = ix << (MLX5E_LOG_ALIGNED_MPWQE_PPW - 1);
495 u16 pi, contig_wqebbs_room;
500 unlikely(!mlx5e_xsk_pages_enough_umem(rq, MLX5_MPWRQ_PAGES_PER_WQE))) {
505 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
506 contig_wqebbs_room = mlx5_wq_cyc_get_contig_wqebbs(wq, pi);
507 if (unlikely(contig_wqebbs_room < MLX5E_UMR_WQEBBS)) {
508 mlx5e_fill_icosq_frag_edge(sq, wq, pi, contig_wqebbs_room);
509 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
512 umr_wqe = mlx5_wq_cyc_get_wqe(wq, pi);
513 memcpy(umr_wqe, &rq->mpwqe.umr_wqe, offsetof(struct mlx5e_umr_wqe, inline_mtts));
515 for (i = 0; i < MLX5_MPWRQ_PAGES_PER_WQE; i++, dma_info++) {
516 err = mlx5e_page_alloc(rq, dma_info);
519 umr_wqe->inline_mtts[i].ptag = cpu_to_be64(dma_info->addr | MLX5_EN_WR);
522 bitmap_zero(wi->xdp_xmit_bitmap, MLX5_MPWRQ_PAGES_PER_WQE);
523 wi->consumed_strides = 0;
525 umr_wqe->ctrl.opmod_idx_opcode =
526 cpu_to_be32((sq->pc << MLX5_WQE_CTRL_WQE_INDEX_SHIFT) |
528 umr_wqe->uctrl.xlt_offset = cpu_to_be16(xlt_offset);
530 sq->db.ico_wqe[pi].opcode = MLX5_OPCODE_UMR;
531 sq->db.ico_wqe[pi].num_wqebbs = MLX5E_UMR_WQEBBS;
532 sq->db.ico_wqe[pi].umr.rq = rq;
533 sq->pc += MLX5E_UMR_WQEBBS;
535 sq->doorbell_cseg = &umr_wqe->ctrl;
542 mlx5e_page_release(rq, dma_info, true);
546 rq->stats->buff_alloc_err++;
551 void mlx5e_dealloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix)
553 struct mlx5e_mpw_info *wi = &rq->mpwqe.info[ix];
554 /* Don't recycle, this function is called on rq/netdev close */
555 mlx5e_free_rx_mpwqe(rq, wi, false);
558 bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq)
560 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
564 if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state)))
567 wqe_bulk = rq->wqe.info.wqe_bulk;
569 if (mlx5_wq_cyc_missing(wq) < wqe_bulk)
573 u16 head = mlx5_wq_cyc_get_head(wq);
575 err = mlx5e_alloc_rx_wqes(rq, head, wqe_bulk);
577 rq->stats->buff_alloc_err++;
581 mlx5_wq_cyc_push_n(wq, wqe_bulk);
582 } while (mlx5_wq_cyc_missing(wq) >= wqe_bulk);
584 /* ensure wqes are visible to device before updating doorbell record */
587 mlx5_wq_cyc_update_db_record(wq);
592 void mlx5e_poll_ico_cq(struct mlx5e_cq *cq)
594 struct mlx5e_icosq *sq = container_of(cq, struct mlx5e_icosq, cq);
595 struct mlx5_cqe64 *cqe;
599 if (unlikely(!test_bit(MLX5E_SQ_STATE_ENABLED, &sq->state)))
602 cqe = mlx5_cqwq_get_cqe(&cq->wq);
606 /* sq->cc must be updated only after mlx5_cqwq_update_db_record(),
607 * otherwise a cq overrun may occur
616 mlx5_cqwq_pop(&cq->wq);
618 wqe_counter = be16_to_cpu(cqe->wqe_counter);
621 struct mlx5e_sq_wqe_info *wi;
624 last_wqe = (sqcc == wqe_counter);
626 ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc);
627 wi = &sq->db.ico_wqe[ci];
628 sqcc += wi->num_wqebbs;
630 if (last_wqe && unlikely(get_cqe_opcode(cqe) != MLX5_CQE_REQ)) {
631 netdev_WARN_ONCE(cq->channel->netdev,
632 "Bad OP in ICOSQ CQE: 0x%x\n",
633 get_cqe_opcode(cqe));
634 if (!test_and_set_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state))
635 queue_work(cq->channel->priv->wq, &sq->recover_work);
639 if (likely(wi->opcode == MLX5_OPCODE_UMR))
640 wi->umr.rq->mpwqe.umr_completed++;
641 else if (unlikely(wi->opcode != MLX5_OPCODE_NOP))
642 netdev_WARN_ONCE(cq->channel->netdev,
643 "Bad OPCODE in ICOSQ WQE info: 0x%x\n",
648 } while ((++i < MLX5E_TX_CQ_POLL_BUDGET) && (cqe = mlx5_cqwq_get_cqe(&cq->wq)));
652 mlx5_cqwq_update_db_record(&cq->wq);
655 bool mlx5e_post_rx_mpwqes(struct mlx5e_rq *rq)
657 struct mlx5e_icosq *sq = &rq->channel->icosq;
658 struct mlx5_wq_ll *wq = &rq->mpwqe.wq;
659 u8 umr_completed = rq->mpwqe.umr_completed;
664 if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state)))
668 mlx5e_post_rx_mpwqe(rq, umr_completed);
669 rq->mpwqe.umr_in_progress -= umr_completed;
670 rq->mpwqe.umr_completed = 0;
673 missing = mlx5_wq_ll_missing(wq) - rq->mpwqe.umr_in_progress;
675 if (unlikely(rq->mpwqe.umr_in_progress > rq->mpwqe.umr_last_bulk))
676 rq->stats->congst_umr++;
678 #define UMR_WQE_BULK (2)
679 if (likely(missing < UMR_WQE_BULK))
682 head = rq->mpwqe.actual_wq_head;
685 alloc_err = mlx5e_alloc_rx_mpwqe(rq, head);
687 if (unlikely(alloc_err))
689 head = mlx5_wq_ll_get_wqe_next_ix(wq, head);
692 rq->mpwqe.umr_last_bulk = missing - i;
693 if (sq->doorbell_cseg) {
694 mlx5e_notify_hw(&sq->wq, sq->pc, sq->uar_map, sq->doorbell_cseg);
695 sq->doorbell_cseg = NULL;
698 rq->mpwqe.umr_in_progress += rq->mpwqe.umr_last_bulk;
699 rq->mpwqe.actual_wq_head = head;
701 /* If XSK Fill Ring doesn't have enough frames, report the error, so
702 * that one of the actions can be performed:
703 * 1. If need_wakeup is used, signal that the application has to kick
704 * the driver when it refills the Fill Ring.
705 * 2. Otherwise, busy poll by rescheduling the NAPI poll.
707 if (unlikely(alloc_err == -ENOMEM && rq->umem))
713 static void mlx5e_lro_update_tcp_hdr(struct mlx5_cqe64 *cqe, struct tcphdr *tcp)
715 u8 l4_hdr_type = get_cqe_l4_hdr_type(cqe);
716 u8 tcp_ack = (l4_hdr_type == CQE_L4_HDR_TYPE_TCP_ACK_NO_DATA) ||
717 (l4_hdr_type == CQE_L4_HDR_TYPE_TCP_ACK_AND_DATA);
720 tcp->psh = get_cqe_lro_tcppsh(cqe);
724 tcp->ack_seq = cqe->lro_ack_seq_num;
725 tcp->window = cqe->lro_tcp_win;
729 static void mlx5e_lro_update_hdr(struct sk_buff *skb, struct mlx5_cqe64 *cqe,
732 struct ethhdr *eth = (struct ethhdr *)(skb->data);
734 int network_depth = 0;
740 proto = __vlan_get_protocol(skb, eth->h_proto, &network_depth);
742 tot_len = cqe_bcnt - network_depth;
743 ip_p = skb->data + network_depth;
745 if (proto == htons(ETH_P_IP)) {
746 struct iphdr *ipv4 = ip_p;
748 tcp = ip_p + sizeof(struct iphdr);
749 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
751 ipv4->ttl = cqe->lro_min_ttl;
752 ipv4->tot_len = cpu_to_be16(tot_len);
754 ipv4->check = ip_fast_csum((unsigned char *)ipv4,
757 mlx5e_lro_update_tcp_hdr(cqe, tcp);
758 check = csum_partial(tcp, tcp->doff * 4,
759 csum_unfold((__force __sum16)cqe->check_sum));
760 /* Almost done, don't forget the pseudo header */
761 tcp->check = csum_tcpudp_magic(ipv4->saddr, ipv4->daddr,
762 tot_len - sizeof(struct iphdr),
765 u16 payload_len = tot_len - sizeof(struct ipv6hdr);
766 struct ipv6hdr *ipv6 = ip_p;
768 tcp = ip_p + sizeof(struct ipv6hdr);
769 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
771 ipv6->hop_limit = cqe->lro_min_ttl;
772 ipv6->payload_len = cpu_to_be16(payload_len);
774 mlx5e_lro_update_tcp_hdr(cqe, tcp);
775 check = csum_partial(tcp, tcp->doff * 4,
776 csum_unfold((__force __sum16)cqe->check_sum));
777 /* Almost done, don't forget the pseudo header */
778 tcp->check = csum_ipv6_magic(&ipv6->saddr, &ipv6->daddr, payload_len,
783 static inline void mlx5e_skb_set_hash(struct mlx5_cqe64 *cqe,
786 u8 cht = cqe->rss_hash_type;
787 int ht = (cht & CQE_RSS_HTYPE_L4) ? PKT_HASH_TYPE_L4 :
788 (cht & CQE_RSS_HTYPE_IP) ? PKT_HASH_TYPE_L3 :
790 skb_set_hash(skb, be32_to_cpu(cqe->rss_hash_result), ht);
793 static inline bool is_last_ethertype_ip(struct sk_buff *skb, int *network_depth,
796 *proto = ((struct ethhdr *)skb->data)->h_proto;
797 *proto = __vlan_get_protocol(skb, *proto, network_depth);
799 if (*proto == htons(ETH_P_IP))
800 return pskb_may_pull(skb, *network_depth + sizeof(struct iphdr));
802 if (*proto == htons(ETH_P_IPV6))
803 return pskb_may_pull(skb, *network_depth + sizeof(struct ipv6hdr));
808 static inline void mlx5e_enable_ecn(struct mlx5e_rq *rq, struct sk_buff *skb)
810 int network_depth = 0;
815 if (unlikely(!is_last_ethertype_ip(skb, &network_depth, &proto)))
818 ip = skb->data + network_depth;
819 rc = ((proto == htons(ETH_P_IP)) ? IP_ECN_set_ce((struct iphdr *)ip) :
820 IP6_ECN_set_ce(skb, (struct ipv6hdr *)ip));
822 rq->stats->ecn_mark += !!rc;
825 static u8 get_ip_proto(struct sk_buff *skb, int network_depth, __be16 proto)
827 void *ip_p = skb->data + network_depth;
829 return (proto == htons(ETH_P_IP)) ? ((struct iphdr *)ip_p)->protocol :
830 ((struct ipv6hdr *)ip_p)->nexthdr;
833 #define short_frame(size) ((size) <= ETH_ZLEN + ETH_FCS_LEN)
835 #define MAX_PADDING 8
838 tail_padding_csum_slow(struct sk_buff *skb, int offset, int len,
839 struct mlx5e_rq_stats *stats)
841 stats->csum_complete_tail_slow++;
842 skb->csum = csum_block_add(skb->csum,
843 skb_checksum(skb, offset, len, 0),
848 tail_padding_csum(struct sk_buff *skb, int offset,
849 struct mlx5e_rq_stats *stats)
851 u8 tail_padding[MAX_PADDING];
852 int len = skb->len - offset;
855 if (unlikely(len > MAX_PADDING)) {
856 tail_padding_csum_slow(skb, offset, len, stats);
860 tail = skb_header_pointer(skb, offset, len, tail_padding);
861 if (unlikely(!tail)) {
862 tail_padding_csum_slow(skb, offset, len, stats);
866 stats->csum_complete_tail++;
867 skb->csum = csum_block_add(skb->csum, csum_partial(tail, len, 0), offset);
871 mlx5e_skb_csum_fixup(struct sk_buff *skb, int network_depth, __be16 proto,
872 struct mlx5e_rq_stats *stats)
878 /* Fixup vlan headers, if any */
879 if (network_depth > ETH_HLEN)
880 /* CQE csum is calculated from the IP header and does
881 * not cover VLAN headers (if present). This will add
882 * the checksum manually.
884 skb->csum = csum_partial(skb->data + ETH_HLEN,
885 network_depth - ETH_HLEN,
888 /* Fixup tail padding, if any */
890 case htons(ETH_P_IP):
891 ip4 = (struct iphdr *)(skb->data + network_depth);
892 pkt_len = network_depth + ntohs(ip4->tot_len);
894 case htons(ETH_P_IPV6):
895 ip6 = (struct ipv6hdr *)(skb->data + network_depth);
896 pkt_len = network_depth + sizeof(*ip6) + ntohs(ip6->payload_len);
902 if (likely(pkt_len >= skb->len))
905 tail_padding_csum(skb, pkt_len, stats);
908 static inline void mlx5e_handle_csum(struct net_device *netdev,
909 struct mlx5_cqe64 *cqe,
914 struct mlx5e_rq_stats *stats = rq->stats;
915 int network_depth = 0;
918 if (unlikely(!(netdev->features & NETIF_F_RXCSUM)))
922 skb->ip_summed = CHECKSUM_UNNECESSARY;
923 stats->csum_unnecessary++;
927 /* True when explicitly set via priv flag, or XDP prog is loaded */
928 if (test_bit(MLX5E_RQ_STATE_NO_CSUM_COMPLETE, &rq->state))
929 goto csum_unnecessary;
931 /* CQE csum doesn't cover padding octets in short ethernet
932 * frames. And the pad field is appended prior to calculating
933 * and appending the FCS field.
935 * Detecting these padded frames requires to verify and parse
936 * IP headers, so we simply force all those small frames to be
937 * CHECKSUM_UNNECESSARY even if they are not padded.
939 if (short_frame(skb->len))
940 goto csum_unnecessary;
942 if (likely(is_last_ethertype_ip(skb, &network_depth, &proto))) {
943 if (unlikely(get_ip_proto(skb, network_depth, proto) == IPPROTO_SCTP))
944 goto csum_unnecessary;
946 stats->csum_complete++;
947 skb->ip_summed = CHECKSUM_COMPLETE;
948 skb->csum = csum_unfold((__force __sum16)cqe->check_sum);
950 if (test_bit(MLX5E_RQ_STATE_CSUM_FULL, &rq->state))
951 return; /* CQE csum covers all received bytes */
953 /* csum might need some fixups ...*/
954 mlx5e_skb_csum_fixup(skb, network_depth, proto, stats);
959 if (likely((cqe->hds_ip_ext & CQE_L3_OK) &&
960 (cqe->hds_ip_ext & CQE_L4_OK))) {
961 skb->ip_summed = CHECKSUM_UNNECESSARY;
962 if (cqe_is_tunneled(cqe)) {
964 skb->encapsulation = 1;
965 stats->csum_unnecessary_inner++;
968 stats->csum_unnecessary++;
972 skb->ip_summed = CHECKSUM_NONE;
976 #define MLX5E_CE_BIT_MASK 0x80
978 static inline void mlx5e_build_rx_skb(struct mlx5_cqe64 *cqe,
983 u8 lro_num_seg = be32_to_cpu(cqe->srqn) >> 24;
984 struct mlx5e_rq_stats *stats = rq->stats;
985 struct net_device *netdev = rq->netdev;
987 skb->mac_len = ETH_HLEN;
989 #ifdef CONFIG_MLX5_EN_TLS
990 mlx5e_tls_handle_rx_skb(netdev, skb, &cqe_bcnt);
993 if (lro_num_seg > 1) {
994 mlx5e_lro_update_hdr(skb, cqe, cqe_bcnt);
995 skb_shinfo(skb)->gso_size = DIV_ROUND_UP(cqe_bcnt, lro_num_seg);
996 /* Subtract one since we already counted this as one
997 * "regular" packet in mlx5e_complete_rx_cqe()
999 stats->packets += lro_num_seg - 1;
1000 stats->lro_packets++;
1001 stats->lro_bytes += cqe_bcnt;
1004 if (unlikely(mlx5e_rx_hw_stamp(rq->tstamp)))
1005 skb_hwtstamps(skb)->hwtstamp =
1006 mlx5_timecounter_cyc2time(rq->clock, get_cqe_ts(cqe));
1008 skb_record_rx_queue(skb, rq->ix);
1010 if (likely(netdev->features & NETIF_F_RXHASH))
1011 mlx5e_skb_set_hash(cqe, skb);
1013 if (cqe_has_vlan(cqe)) {
1014 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
1015 be16_to_cpu(cqe->vlan_info));
1016 stats->removed_vlan_packets++;
1019 skb->mark = be32_to_cpu(cqe->sop_drop_qpn) & MLX5E_TC_FLOW_ID_MASK;
1021 mlx5e_handle_csum(netdev, cqe, rq, skb, !!lro_num_seg);
1022 /* checking CE bit in cqe - MSB in ml_path field */
1023 if (unlikely(cqe->ml_path & MLX5E_CE_BIT_MASK))
1024 mlx5e_enable_ecn(rq, skb);
1026 skb->protocol = eth_type_trans(skb, netdev);
1029 static inline void mlx5e_complete_rx_cqe(struct mlx5e_rq *rq,
1030 struct mlx5_cqe64 *cqe,
1032 struct sk_buff *skb)
1034 struct mlx5e_rq_stats *stats = rq->stats;
1037 stats->bytes += cqe_bcnt;
1038 mlx5e_build_rx_skb(cqe, cqe_bcnt, rq, skb);
1042 struct sk_buff *mlx5e_build_linear_skb(struct mlx5e_rq *rq, void *va,
1043 u32 frag_size, u16 headroom,
1046 struct sk_buff *skb = build_skb(va, frag_size);
1048 if (unlikely(!skb)) {
1049 rq->stats->buff_alloc_err++;
1053 skb_reserve(skb, headroom);
1054 skb_put(skb, cqe_bcnt);
1060 mlx5e_skb_from_cqe_linear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe,
1061 struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt)
1063 struct mlx5e_dma_info *di = wi->di;
1064 u16 rx_headroom = rq->buff.headroom;
1065 struct sk_buff *skb;
1070 va = page_address(di->page) + wi->offset;
1071 data = va + rx_headroom;
1072 frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt);
1074 dma_sync_single_range_for_cpu(rq->pdev, di->addr, wi->offset,
1075 frag_size, DMA_FROM_DEVICE);
1076 prefetchw(va); /* xdp_frame data area */
1080 consumed = mlx5e_xdp_handle(rq, di, va, &rx_headroom, &cqe_bcnt, false);
1083 return NULL; /* page/packet was consumed by XDP */
1085 skb = mlx5e_build_linear_skb(rq, va, frag_size, rx_headroom, cqe_bcnt);
1089 /* queue up for recycling/reuse */
1090 page_ref_inc(di->page);
1096 mlx5e_skb_from_cqe_nonlinear(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe,
1097 struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt)
1099 struct mlx5e_rq_frag_info *frag_info = &rq->wqe.info.arr[0];
1100 struct mlx5e_wqe_frag_info *head_wi = wi;
1101 u16 headlen = min_t(u32, MLX5E_RX_MAX_HEAD, cqe_bcnt);
1102 u16 frag_headlen = headlen;
1103 u16 byte_cnt = cqe_bcnt - headlen;
1104 struct sk_buff *skb;
1106 /* XDP is not supported in this configuration, as incoming packets
1107 * might spread among multiple pages.
1109 skb = napi_alloc_skb(rq->cq.napi,
1110 ALIGN(MLX5E_RX_MAX_HEAD, sizeof(long)));
1111 if (unlikely(!skb)) {
1112 rq->stats->buff_alloc_err++;
1116 prefetchw(skb->data);
1119 u16 frag_consumed_bytes =
1120 min_t(u16, frag_info->frag_size - frag_headlen, byte_cnt);
1122 mlx5e_add_skb_frag(rq, skb, wi->di, wi->offset + frag_headlen,
1123 frag_consumed_bytes, frag_info->frag_stride);
1124 byte_cnt -= frag_consumed_bytes;
1131 mlx5e_copy_skb_header(rq->pdev, skb, head_wi->di, head_wi->offset, headlen);
1132 /* skb linear part was allocated with headlen and aligned to long */
1133 skb->tail += headlen;
1134 skb->len += headlen;
1139 static void trigger_report(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1141 struct mlx5_err_cqe *err_cqe = (struct mlx5_err_cqe *)cqe;
1143 if (cqe_syndrome_needs_recover(err_cqe->syndrome) &&
1144 !test_and_set_bit(MLX5E_RQ_STATE_RECOVERING, &rq->state))
1145 queue_work(rq->channel->priv->wq, &rq->recover_work);
1148 void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1150 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1151 struct mlx5e_wqe_frag_info *wi;
1152 struct sk_buff *skb;
1156 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1157 wi = get_frag(rq, ci);
1158 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1160 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1161 trigger_report(rq, cqe);
1162 rq->stats->wqe_err++;
1166 skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe,
1167 mlx5e_skb_from_cqe_linear,
1168 mlx5e_skb_from_cqe_nonlinear,
1169 rq, cqe, wi, cqe_bcnt);
1171 /* probably for XDP */
1172 if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) {
1173 /* do not return page to cache,
1174 * it will be returned on XDP_TX completion.
1181 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1182 napi_gro_receive(rq->cq.napi, skb);
1185 mlx5e_free_rx_wqe(rq, wi, true);
1187 mlx5_wq_cyc_pop(wq);
1190 #ifdef CONFIG_MLX5_ESWITCH
1191 void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1193 struct net_device *netdev = rq->netdev;
1194 struct mlx5e_priv *priv = netdev_priv(netdev);
1195 struct mlx5e_rep_priv *rpriv = priv->ppriv;
1196 struct mlx5_eswitch_rep *rep = rpriv->rep;
1197 struct mlx5e_tc_update_priv tc_priv = {};
1198 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1199 struct mlx5e_wqe_frag_info *wi;
1200 struct sk_buff *skb;
1204 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1205 wi = get_frag(rq, ci);
1206 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1208 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1209 rq->stats->wqe_err++;
1213 skb = rq->wqe.skb_from_cqe(rq, cqe, wi, cqe_bcnt);
1215 /* probably for XDP */
1216 if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) {
1217 /* do not return page to cache,
1218 * it will be returned on XDP_TX completion.
1225 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1227 if (rep->vlan && skb_vlan_tag_present(skb))
1230 if (!mlx5e_tc_rep_update_skb(cqe, skb, &tc_priv))
1233 napi_gro_receive(rq->cq.napi, skb);
1235 mlx5_tc_rep_post_napi_receive(&tc_priv);
1238 mlx5e_free_rx_wqe(rq, wi, true);
1240 mlx5_wq_cyc_pop(wq);
1243 void mlx5e_handle_rx_cqe_mpwrq_rep(struct mlx5e_rq *rq,
1244 struct mlx5_cqe64 *cqe)
1246 u16 cstrides = mpwrq_get_cqe_consumed_strides(cqe);
1247 u16 wqe_id = be16_to_cpu(cqe->wqe_id);
1248 struct mlx5e_mpw_info *wi = &rq->mpwqe.info[wqe_id];
1249 u16 stride_ix = mpwrq_get_cqe_stride_index(cqe);
1250 u32 wqe_offset = stride_ix << rq->mpwqe.log_stride_sz;
1251 u32 head_offset = wqe_offset & (PAGE_SIZE - 1);
1252 u32 page_idx = wqe_offset >> PAGE_SHIFT;
1253 struct mlx5e_tc_update_priv tc_priv = {};
1254 struct mlx5e_rx_wqe_ll *wqe;
1255 struct mlx5_wq_ll *wq;
1256 struct sk_buff *skb;
1259 wi->consumed_strides += cstrides;
1261 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1262 trigger_report(rq, cqe);
1263 rq->stats->wqe_err++;
1267 if (unlikely(mpwrq_is_filler_cqe(cqe))) {
1268 struct mlx5e_rq_stats *stats = rq->stats;
1270 stats->mpwqe_filler_cqes++;
1271 stats->mpwqe_filler_strides += cstrides;
1275 cqe_bcnt = mpwrq_get_cqe_byte_cnt(cqe);
1277 skb = INDIRECT_CALL_2(rq->mpwqe.skb_from_cqe_mpwrq,
1278 mlx5e_skb_from_cqe_mpwrq_linear,
1279 mlx5e_skb_from_cqe_mpwrq_nonlinear,
1280 rq, wi, cqe_bcnt, head_offset, page_idx);
1284 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1286 if (!mlx5e_tc_rep_update_skb(cqe, skb, &tc_priv))
1289 napi_gro_receive(rq->cq.napi, skb);
1291 mlx5_tc_rep_post_napi_receive(&tc_priv);
1294 if (likely(wi->consumed_strides < rq->mpwqe.num_strides))
1298 wqe = mlx5_wq_ll_get_wqe(wq, wqe_id);
1299 mlx5e_free_rx_mpwqe(rq, wi, true);
1300 mlx5_wq_ll_pop(wq, cqe->wqe_id, &wqe->next.next_wqe_index);
1305 mlx5e_skb_from_cqe_mpwrq_nonlinear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi,
1306 u16 cqe_bcnt, u32 head_offset, u32 page_idx)
1308 u16 headlen = min_t(u16, MLX5E_RX_MAX_HEAD, cqe_bcnt);
1309 struct mlx5e_dma_info *di = &wi->umr.dma_info[page_idx];
1310 u32 frag_offset = head_offset + headlen;
1311 u32 byte_cnt = cqe_bcnt - headlen;
1312 struct mlx5e_dma_info *head_di = di;
1313 struct sk_buff *skb;
1315 skb = napi_alloc_skb(rq->cq.napi,
1316 ALIGN(MLX5E_RX_MAX_HEAD, sizeof(long)));
1317 if (unlikely(!skb)) {
1318 rq->stats->buff_alloc_err++;
1322 prefetchw(skb->data);
1324 if (unlikely(frag_offset >= PAGE_SIZE)) {
1326 frag_offset -= PAGE_SIZE;
1330 u32 pg_consumed_bytes =
1331 min_t(u32, PAGE_SIZE - frag_offset, byte_cnt);
1332 unsigned int truesize =
1333 ALIGN(pg_consumed_bytes, BIT(rq->mpwqe.log_stride_sz));
1335 mlx5e_add_skb_frag(rq, skb, di, frag_offset,
1336 pg_consumed_bytes, truesize);
1337 byte_cnt -= pg_consumed_bytes;
1342 mlx5e_copy_skb_header(rq->pdev, skb, head_di, head_offset, headlen);
1343 /* skb linear part was allocated with headlen and aligned to long */
1344 skb->tail += headlen;
1345 skb->len += headlen;
1351 mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi,
1352 u16 cqe_bcnt, u32 head_offset, u32 page_idx)
1354 struct mlx5e_dma_info *di = &wi->umr.dma_info[page_idx];
1355 u16 rx_headroom = rq->buff.headroom;
1356 u32 cqe_bcnt32 = cqe_bcnt;
1357 struct sk_buff *skb;
1362 /* Check packet size. Note LRO doesn't use linear SKB */
1363 if (unlikely(cqe_bcnt > rq->hw_mtu)) {
1364 rq->stats->oversize_pkts_sw_drop++;
1368 va = page_address(di->page) + head_offset;
1369 data = va + rx_headroom;
1370 frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt32);
1372 dma_sync_single_range_for_cpu(rq->pdev, di->addr, head_offset,
1373 frag_size, DMA_FROM_DEVICE);
1374 prefetchw(va); /* xdp_frame data area */
1378 consumed = mlx5e_xdp_handle(rq, di, va, &rx_headroom, &cqe_bcnt32, false);
1381 if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags))
1382 __set_bit(page_idx, wi->xdp_xmit_bitmap); /* non-atomic */
1383 return NULL; /* page/packet was consumed by XDP */
1386 skb = mlx5e_build_linear_skb(rq, va, frag_size, rx_headroom, cqe_bcnt32);
1390 /* queue up for recycling/reuse */
1391 page_ref_inc(di->page);
1396 void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1398 u16 cstrides = mpwrq_get_cqe_consumed_strides(cqe);
1399 u16 wqe_id = be16_to_cpu(cqe->wqe_id);
1400 struct mlx5e_mpw_info *wi = &rq->mpwqe.info[wqe_id];
1401 u16 stride_ix = mpwrq_get_cqe_stride_index(cqe);
1402 u32 wqe_offset = stride_ix << rq->mpwqe.log_stride_sz;
1403 u32 head_offset = wqe_offset & (PAGE_SIZE - 1);
1404 u32 page_idx = wqe_offset >> PAGE_SHIFT;
1405 struct mlx5e_rx_wqe_ll *wqe;
1406 struct mlx5_wq_ll *wq;
1407 struct sk_buff *skb;
1410 wi->consumed_strides += cstrides;
1412 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1413 trigger_report(rq, cqe);
1414 rq->stats->wqe_err++;
1418 if (unlikely(mpwrq_is_filler_cqe(cqe))) {
1419 struct mlx5e_rq_stats *stats = rq->stats;
1421 stats->mpwqe_filler_cqes++;
1422 stats->mpwqe_filler_strides += cstrides;
1426 cqe_bcnt = mpwrq_get_cqe_byte_cnt(cqe);
1428 skb = INDIRECT_CALL_2(rq->mpwqe.skb_from_cqe_mpwrq,
1429 mlx5e_skb_from_cqe_mpwrq_linear,
1430 mlx5e_skb_from_cqe_mpwrq_nonlinear,
1431 rq, wi, cqe_bcnt, head_offset, page_idx);
1435 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1436 napi_gro_receive(rq->cq.napi, skb);
1439 if (likely(wi->consumed_strides < rq->mpwqe.num_strides))
1443 wqe = mlx5_wq_ll_get_wqe(wq, wqe_id);
1444 mlx5e_free_rx_mpwqe(rq, wi, true);
1445 mlx5_wq_ll_pop(wq, cqe->wqe_id, &wqe->next.next_wqe_index);
1448 int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget)
1450 struct mlx5e_rq *rq = container_of(cq, struct mlx5e_rq, cq);
1451 struct mlx5_cqwq *cqwq = &cq->wq;
1452 struct mlx5_cqe64 *cqe;
1455 if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state)))
1459 page_pool_nid_changed(rq->page_pool, numa_mem_id());
1462 work_done += mlx5e_decompress_cqes_cont(rq, cqwq, 0, budget);
1463 if (rq->cqd.left || work_done >= budget)
1467 cqe = mlx5_cqwq_get_cqe(cqwq);
1469 if (unlikely(work_done))
1475 if (mlx5_get_cqe_format(cqe) == MLX5_COMPRESSED) {
1477 mlx5e_decompress_cqes_start(rq, cqwq,
1478 budget - work_done);
1482 mlx5_cqwq_pop(cqwq);
1484 INDIRECT_CALL_2(rq->handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq,
1485 mlx5e_handle_rx_cqe, rq, cqe);
1486 } while ((++work_done < budget) && (cqe = mlx5_cqwq_get_cqe(cqwq)));
1490 mlx5e_xdp_rx_poll_complete(rq);
1492 mlx5_cqwq_update_db_record(cqwq);
1494 /* ensure cq space is freed before enabling more cqes */
1500 #ifdef CONFIG_MLX5_CORE_IPOIB
1502 #define MLX5_IB_GRH_DGID_OFFSET 24
1503 #define MLX5_GID_SIZE 16
1505 static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq,
1506 struct mlx5_cqe64 *cqe,
1508 struct sk_buff *skb)
1510 struct hwtstamp_config *tstamp;
1511 struct mlx5e_rq_stats *stats;
1512 struct net_device *netdev;
1513 struct mlx5e_priv *priv;
1514 char *pseudo_header;
1519 qpn = be32_to_cpu(cqe->sop_drop_qpn) & 0xffffff;
1520 netdev = mlx5i_pkey_get_netdev(rq->netdev, qpn);
1522 /* No mapping present, cannot process SKB. This might happen if a child
1523 * interface is going down while having unprocessed CQEs on parent RQ
1525 if (unlikely(!netdev)) {
1526 /* TODO: add drop counters support */
1528 pr_warn_once("Unable to map QPN %u to dev - dropping skb\n", qpn);
1532 priv = mlx5i_epriv(netdev);
1533 tstamp = &priv->tstamp;
1534 stats = &priv->channel_stats[rq->ix].rq;
1536 g = (be32_to_cpu(cqe->flags_rqpn) >> 28) & 3;
1537 dgid = skb->data + MLX5_IB_GRH_DGID_OFFSET;
1538 if ((!g) || dgid[0] != 0xff)
1539 skb->pkt_type = PACKET_HOST;
1540 else if (memcmp(dgid, netdev->broadcast + 4, MLX5_GID_SIZE) == 0)
1541 skb->pkt_type = PACKET_BROADCAST;
1543 skb->pkt_type = PACKET_MULTICAST;
1545 /* TODO: IB/ipoib: Allow mcast packets from other VFs
1546 * 68996a6e760e5c74654723eeb57bf65628ae87f4
1549 skb_pull(skb, MLX5_IB_GRH_BYTES);
1551 skb->protocol = *((__be16 *)(skb->data));
1553 if (netdev->features & NETIF_F_RXCSUM) {
1554 skb->ip_summed = CHECKSUM_COMPLETE;
1555 skb->csum = csum_unfold((__force __sum16)cqe->check_sum);
1556 stats->csum_complete++;
1558 skb->ip_summed = CHECKSUM_NONE;
1562 if (unlikely(mlx5e_rx_hw_stamp(tstamp)))
1563 skb_hwtstamps(skb)->hwtstamp =
1564 mlx5_timecounter_cyc2time(rq->clock, get_cqe_ts(cqe));
1566 skb_record_rx_queue(skb, rq->ix);
1568 if (likely(netdev->features & NETIF_F_RXHASH))
1569 mlx5e_skb_set_hash(cqe, skb);
1571 /* 20 bytes of ipoib header and 4 for encap existing */
1572 pseudo_header = skb_push(skb, MLX5_IPOIB_PSEUDO_LEN);
1573 memset(pseudo_header, 0, MLX5_IPOIB_PSEUDO_LEN);
1574 skb_reset_mac_header(skb);
1575 skb_pull(skb, MLX5_IPOIB_HARD_LEN);
1580 stats->bytes += cqe_bcnt;
1583 void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1585 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1586 struct mlx5e_wqe_frag_info *wi;
1587 struct sk_buff *skb;
1591 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1592 wi = get_frag(rq, ci);
1593 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1595 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1596 rq->stats->wqe_err++;
1600 skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe,
1601 mlx5e_skb_from_cqe_linear,
1602 mlx5e_skb_from_cqe_nonlinear,
1603 rq, cqe, wi, cqe_bcnt);
1607 mlx5i_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1608 if (unlikely(!skb->dev)) {
1609 dev_kfree_skb_any(skb);
1612 napi_gro_receive(rq->cq.napi, skb);
1615 mlx5e_free_rx_wqe(rq, wi, true);
1616 mlx5_wq_cyc_pop(wq);
1619 #endif /* CONFIG_MLX5_CORE_IPOIB */
1621 #ifdef CONFIG_MLX5_EN_IPSEC
1623 void mlx5e_ipsec_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe)
1625 struct mlx5_wq_cyc *wq = &rq->wqe.wq;
1626 struct mlx5e_wqe_frag_info *wi;
1627 struct sk_buff *skb;
1631 ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter));
1632 wi = get_frag(rq, ci);
1633 cqe_bcnt = be32_to_cpu(cqe->byte_cnt);
1635 if (unlikely(MLX5E_RX_ERR_CQE(cqe))) {
1636 rq->stats->wqe_err++;
1640 skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe,
1641 mlx5e_skb_from_cqe_linear,
1642 mlx5e_skb_from_cqe_nonlinear,
1643 rq, cqe, wi, cqe_bcnt);
1644 if (unlikely(!skb)) /* a DROP, save the page-reuse checks */
1647 skb = mlx5e_ipsec_handle_rx_skb(rq->netdev, skb, &cqe_bcnt);
1651 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb);
1652 napi_gro_receive(rq->cq.napi, skb);
1655 mlx5e_free_rx_wqe(rq, wi, true);
1656 mlx5_wq_cyc_pop(wq);
1659 #endif /* CONFIG_MLX5_EN_IPSEC */