| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Tariq Toukan | 3927 | 28.92% | 70 | 31.82% |
| Khalid Manaa | 2678 | 19.72% | 5 | 2.27% |
| Ben Ben-ishay | 1451 | 10.68% | 3 | 1.36% |
| Maxim Mikityanskiy | 1371 | 10.09% | 35 | 15.91% |
| Saeed Mahameed | 1261 | 9.29% | 20 | 9.09% |
| Aya Levin | 416 | 3.06% | 9 | 4.09% |
| Amir Vadai | 359 | 2.64% | 2 | 0.91% |
| Gal Pressman | 350 | 2.58% | 12 | 5.45% |
| Paul Blakey | 279 | 2.05% | 2 | 0.91% |
| Or Gerlitz | 216 | 1.59% | 3 | 1.36% |
| Achiad Shochat | 124 | 0.91% | 2 | 0.91% |
| Natali Shechtman | 122 | 0.90% | 1 | 0.45% |
| Eran Ben Elisha | 112 | 0.82% | 4 | 1.82% |
| Feras Daoud | 104 | 0.77% | 5 | 2.27% |
| Björn Töpel | 90 | 0.66% | 1 | 0.45% |
| Erez Shitrit | 82 | 0.60% | 2 | 0.91% |
| Jesper Dangaard Brouer | 71 | 0.52% | 4 | 1.82% |
| Alex Vesker | 71 | 0.52% | 1 | 0.45% |
| Alaa Hleihel | 70 | 0.52% | 1 | 0.45% |
| Daniel Jurgens | 64 | 0.47% | 1 | 0.45% |
| Ariel Levkovich | 42 | 0.31% | 2 | 0.91% |
| Alex Liu | 41 | 0.30% | 1 | 0.45% |
| Paolo Abeni | 27 | 0.20% | 2 | 0.91% |
| Américo Wang | 26 | 0.19% | 2 | 0.91% |
| Ofer Levi | 25 | 0.18% | 1 | 0.45% |
| Moshe Shemesh | 24 | 0.18% | 1 | 0.45% |
| Raed Salem | 23 | 0.17% | 2 | 0.91% |
| Lior Nahmanson | 22 | 0.16% | 1 | 0.45% |
| Lorenzo Bianconi | 15 | 0.11% | 2 | 0.91% |
| Roi Dayan | 15 | 0.11% | 1 | 0.45% |
| Maor Dickman | 14 | 0.10% | 1 | 0.45% |
| Leon Romanovsky | 13 | 0.10% | 2 | 0.91% |
| Eric Dumazet | 13 | 0.10% | 3 | 1.36% |
| Boris Pismenny | 10 | 0.07% | 1 | 0.45% |
| Inbar Karmy | 10 | 0.07% | 1 | 0.45% |
| Ron Diskin | 8 | 0.06% | 1 | 0.45% |
| Yonatan Cohen | 5 | 0.04% | 1 | 0.45% |
| Martin KaFai Lau | 4 | 0.03% | 1 | 0.45% |
| David S. Miller | 4 | 0.03% | 1 | 0.45% |
| Matthew Finlay | 4 | 0.03% | 1 | 0.45% |
| Ilan Tayari | 3 | 0.02% | 1 | 0.45% |
| Vlad Buslov | 3 | 0.02% | 1 | 0.45% |
| Rana Shahout | 3 | 0.02% | 1 | 0.45% |
| Daniel Borkmann | 2 | 0.01% | 1 | 0.45% |
| Alexander Lobakin | 2 | 0.01% | 1 | 0.45% |
| Stephen Hemminger | 2 | 0.01% | 1 | 0.45% |
| Alexander Duyck | 1 | 0.01% | 1 | 0.45% |
| Magnus Karlsson | 1 | 0.01% | 1 | 0.45% |
| Mohamad Haj Yahia | 1 | 0.01% | 1 | 0.45% |
| Total | 13581 | 220 |
/* * Copyright (c) 2015, Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <linux/ip.h> #include <linux/ipv6.h> #include <linux/tcp.h> #include <linux/bitmap.h> #include <linux/filter.h> #include <net/ip6_checksum.h> #include <net/page_pool.h> #include <net/inet_ecn.h> #include <net/gro.h> #include <net/udp.h> #include <net/tcp.h> #include <net/xdp_sock_drv.h> #include "en.h" #include "en/txrx.h" #include "en_tc.h" #include "eswitch.h" #include "en_rep.h" #include "en/rep/tc.h" #include "ipoib/ipoib.h" #include "en_accel/ipsec.h" #include "en_accel/macsec.h" #include "en_accel/ipsec_rxtx.h" #include "en_accel/ktls_txrx.h" #include "en/xdp.h" #include "en/xsk/rx.h" #include "en/health.h" #include "en/params.h" #include "devlink.h" #include "en/devlink.h" static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, u16 cqe_bcnt, u32 head_offset, u32 page_idx); static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_nonlinear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, u16 cqe_bcnt, u32 head_offset, u32 page_idx); static void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); static void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); static void mlx5e_handle_rx_cqe_mpwrq_shampo(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); const struct mlx5e_rx_handlers mlx5e_rx_handlers_nic = { .handle_rx_cqe = mlx5e_handle_rx_cqe, .handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq, .handle_rx_cqe_mpwqe_shampo = mlx5e_handle_rx_cqe_mpwrq_shampo, }; static inline bool mlx5e_rx_hw_stamp(struct hwtstamp_config *config) { return config->rx_filter == HWTSTAMP_FILTER_ALL; } static inline void mlx5e_read_cqe_slot(struct mlx5_cqwq *wq, u32 cqcc, void *data) { u32 ci = mlx5_cqwq_ctr2ix(wq, cqcc); memcpy(data, mlx5_cqwq_get_wqe(wq, ci), sizeof(struct mlx5_cqe64)); } static inline void mlx5e_read_title_slot(struct mlx5e_rq *rq, struct mlx5_cqwq *wq, u32 cqcc) { struct mlx5e_cq_decomp *cqd = &rq->cqd; struct mlx5_cqe64 *title = &cqd->title; mlx5e_read_cqe_slot(wq, cqcc, title); cqd->left = be32_to_cpu(title->byte_cnt); cqd->wqe_counter = be16_to_cpu(title->wqe_counter); rq->stats->cqe_compress_blks++; } static inline void mlx5e_read_mini_arr_slot(struct mlx5_cqwq *wq, struct mlx5e_cq_decomp *cqd, u32 cqcc) { mlx5e_read_cqe_slot(wq, cqcc, cqd->mini_arr); cqd->mini_arr_idx = 0; } static inline void mlx5e_cqes_update_owner(struct mlx5_cqwq *wq, int n) { u32 cqcc = wq->cc; u8 op_own = mlx5_cqwq_get_ctr_wrap_cnt(wq, cqcc) & 1; u32 ci = mlx5_cqwq_ctr2ix(wq, cqcc); u32 wq_sz = mlx5_cqwq_get_size(wq); u32 ci_top = min_t(u32, wq_sz, ci + n); for (; ci < ci_top; ci++, n--) { struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci); cqe->op_own = op_own; } if (unlikely(ci == wq_sz)) { op_own = !op_own; for (ci = 0; ci < n; ci++) { struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(wq, ci); cqe->op_own = op_own; } } } static inline void mlx5e_decompress_cqe(struct mlx5e_rq *rq, struct mlx5_cqwq *wq, u32 cqcc) { struct mlx5e_cq_decomp *cqd = &rq->cqd; struct mlx5_mini_cqe8 *mini_cqe = &cqd->mini_arr[cqd->mini_arr_idx]; struct mlx5_cqe64 *title = &cqd->title; title->byte_cnt = mini_cqe->byte_cnt; title->check_sum = mini_cqe->checksum; title->op_own &= 0xf0; title->op_own |= 0x01 & (cqcc >> wq->fbc.log_sz); /* state bit set implies linked-list striding RQ wq type and * HW stride index capability supported */ if (test_bit(MLX5E_RQ_STATE_MINI_CQE_HW_STRIDX, &rq->state)) { title->wqe_counter = mini_cqe->stridx; return; } /* HW stride index capability not supported */ title->wqe_counter = cpu_to_be16(cqd->wqe_counter); if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) cqd->wqe_counter += mpwrq_get_cqe_consumed_strides(title); else cqd->wqe_counter = mlx5_wq_cyc_ctr2ix(&rq->wqe.wq, cqd->wqe_counter + 1); } static inline void mlx5e_decompress_cqe_no_hash(struct mlx5e_rq *rq, struct mlx5_cqwq *wq, u32 cqcc) { struct mlx5e_cq_decomp *cqd = &rq->cqd; mlx5e_decompress_cqe(rq, wq, cqcc); cqd->title.rss_hash_type = 0; cqd->title.rss_hash_result = 0; } static inline u32 mlx5e_decompress_cqes_cont(struct mlx5e_rq *rq, struct mlx5_cqwq *wq, int update_owner_only, int budget_rem) { struct mlx5e_cq_decomp *cqd = &rq->cqd; u32 cqcc = wq->cc + update_owner_only; u32 cqe_count; u32 i; cqe_count = min_t(u32, cqd->left, budget_rem); for (i = update_owner_only; i < cqe_count; i++, cqd->mini_arr_idx++, cqcc++) { if (cqd->mini_arr_idx == MLX5_MINI_CQE_ARRAY_SIZE) mlx5e_read_mini_arr_slot(wq, cqd, cqcc); mlx5e_decompress_cqe_no_hash(rq, wq, cqcc); INDIRECT_CALL_3(rq->handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq, mlx5e_handle_rx_cqe_mpwrq_shampo, mlx5e_handle_rx_cqe, rq, &cqd->title); } mlx5e_cqes_update_owner(wq, cqcc - wq->cc); wq->cc = cqcc; cqd->left -= cqe_count; rq->stats->cqe_compress_pkts += cqe_count; return cqe_count; } static inline u32 mlx5e_decompress_cqes_start(struct mlx5e_rq *rq, struct mlx5_cqwq *wq, int budget_rem) { struct mlx5e_cq_decomp *cqd = &rq->cqd; u32 cc = wq->cc; mlx5e_read_title_slot(rq, wq, cc); mlx5e_read_mini_arr_slot(wq, cqd, cc + 1); mlx5e_decompress_cqe(rq, wq, cc); INDIRECT_CALL_3(rq->handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq, mlx5e_handle_rx_cqe_mpwrq_shampo, mlx5e_handle_rx_cqe, rq, &cqd->title); cqd->mini_arr_idx++; return mlx5e_decompress_cqes_cont(rq, wq, 1, budget_rem) - 1; } static inline bool mlx5e_rx_cache_put(struct mlx5e_rq *rq, struct page *page) { struct mlx5e_page_cache *cache = &rq->page_cache; u32 tail_next = (cache->tail + 1) & (MLX5E_CACHE_SIZE - 1); struct mlx5e_rq_stats *stats = rq->stats; if (tail_next == cache->head) { stats->cache_full++; return false; } if (!dev_page_is_reusable(page)) { stats->cache_waive++; return false; } cache->page_cache[cache->tail] = page; cache->tail = tail_next; return true; } static inline bool mlx5e_rx_cache_get(struct mlx5e_rq *rq, union mlx5e_alloc_unit *au) { struct mlx5e_page_cache *cache = &rq->page_cache; struct mlx5e_rq_stats *stats = rq->stats; dma_addr_t addr; if (unlikely(cache->head == cache->tail)) { stats->cache_empty++; return false; } if (page_ref_count(cache->page_cache[cache->head]) != 1) { stats->cache_busy++; return false; } au->page = cache->page_cache[cache->head]; cache->head = (cache->head + 1) & (MLX5E_CACHE_SIZE - 1); stats->cache_reuse++; addr = page_pool_get_dma_addr(au->page); /* Non-XSK always uses PAGE_SIZE. */ dma_sync_single_for_device(rq->pdev, addr, PAGE_SIZE, rq->buff.map_dir); return true; } static inline int mlx5e_page_alloc_pool(struct mlx5e_rq *rq, union mlx5e_alloc_unit *au) { dma_addr_t addr; if (mlx5e_rx_cache_get(rq, au)) return 0; au->page = page_pool_dev_alloc_pages(rq->page_pool); if (unlikely(!au->page)) return -ENOMEM; /* Non-XSK always uses PAGE_SIZE. */ addr = dma_map_page(rq->pdev, au->page, 0, PAGE_SIZE, rq->buff.map_dir); if (unlikely(dma_mapping_error(rq->pdev, addr))) { page_pool_recycle_direct(rq->page_pool, au->page); au->page = NULL; return -ENOMEM; } page_pool_set_dma_addr(au->page, addr); return 0; } void mlx5e_page_dma_unmap(struct mlx5e_rq *rq, struct page *page) { dma_addr_t dma_addr = page_pool_get_dma_addr(page); dma_unmap_page_attrs(rq->pdev, dma_addr, PAGE_SIZE, rq->buff.map_dir, DMA_ATTR_SKIP_CPU_SYNC); page_pool_set_dma_addr(page, 0); } void mlx5e_page_release_dynamic(struct mlx5e_rq *rq, struct page *page, bool recycle) { if (likely(recycle)) { if (mlx5e_rx_cache_put(rq, page)) return; mlx5e_page_dma_unmap(rq, page); page_pool_recycle_direct(rq->page_pool, page); } else { mlx5e_page_dma_unmap(rq, page); page_pool_release_page(rq->page_pool, page); put_page(page); } } static inline int mlx5e_get_rx_frag(struct mlx5e_rq *rq, struct mlx5e_wqe_frag_info *frag) { int err = 0; if (!frag->offset) /* On first frag (offset == 0), replenish page (alloc_unit actually). * Other frags that point to the same alloc_unit (with a different * offset) should just use the new one without replenishing again * by themselves. */ err = mlx5e_page_alloc_pool(rq, frag->au); return err; } static inline void mlx5e_put_rx_frag(struct mlx5e_rq *rq, struct mlx5e_wqe_frag_info *frag, bool recycle) { if (frag->last_in_page) mlx5e_page_release_dynamic(rq, frag->au->page, recycle); } static inline struct mlx5e_wqe_frag_info *get_frag(struct mlx5e_rq *rq, u16 ix) { return &rq->wqe.frags[ix << rq->wqe.info.log_num_frags]; } static int mlx5e_alloc_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_rx_wqe_cyc *wqe, u16 ix) { struct mlx5e_wqe_frag_info *frag = get_frag(rq, ix); int err; int i; for (i = 0; i < rq->wqe.info.num_frags; i++, frag++) { dma_addr_t addr; u16 headroom; err = mlx5e_get_rx_frag(rq, frag); if (unlikely(err)) goto free_frags; headroom = i == 0 ? rq->buff.headroom : 0; addr = page_pool_get_dma_addr(frag->au->page); wqe->data[i].addr = cpu_to_be64(addr + frag->offset + headroom); } return 0; free_frags: while (--i >= 0) mlx5e_put_rx_frag(rq, --frag, true); return err; } static inline void mlx5e_free_rx_wqe(struct mlx5e_rq *rq, struct mlx5e_wqe_frag_info *wi, bool recycle) { int i; if (rq->xsk_pool) { /* The `recycle` parameter is ignored, and the page is always * put into the Reuse Ring, because there is no way to return * the page to the userspace when the interface goes down. */ xsk_buff_free(wi->au->xsk); return; } for (i = 0; i < rq->wqe.info.num_frags; i++, wi++) mlx5e_put_rx_frag(rq, wi, recycle); } static void mlx5e_dealloc_rx_wqe(struct mlx5e_rq *rq, u16 ix) { struct mlx5e_wqe_frag_info *wi = get_frag(rq, ix); mlx5e_free_rx_wqe(rq, wi, false); } static int mlx5e_alloc_rx_wqes(struct mlx5e_rq *rq, u16 ix, int wqe_bulk) { struct mlx5_wq_cyc *wq = &rq->wqe.wq; int i; for (i = 0; i < wqe_bulk; i++) { int j = mlx5_wq_cyc_ctr2ix(wq, ix + i); struct mlx5e_rx_wqe_cyc *wqe; wqe = mlx5_wq_cyc_get_wqe(wq, j); if (unlikely(mlx5e_alloc_rx_wqe(rq, wqe, j))) break; } return i; } static inline void mlx5e_add_skb_frag(struct mlx5e_rq *rq, struct sk_buff *skb, union mlx5e_alloc_unit *au, u32 frag_offset, u32 len, unsigned int truesize) { dma_addr_t addr = page_pool_get_dma_addr(au->page); dma_sync_single_for_cpu(rq->pdev, addr + frag_offset, len, rq->buff.map_dir); page_ref_inc(au->page); skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, au->page, frag_offset, len, truesize); } static inline void mlx5e_copy_skb_header(struct mlx5e_rq *rq, struct sk_buff *skb, struct page *page, dma_addr_t addr, int offset_from, int dma_offset, u32 headlen) { const void *from = page_address(page) + offset_from; /* Aligning len to sizeof(long) optimizes memcpy performance */ unsigned int len = ALIGN(headlen, sizeof(long)); dma_sync_single_for_cpu(rq->pdev, addr + dma_offset, len, rq->buff.map_dir); skb_copy_to_linear_data(skb, from, len); } static void mlx5e_free_rx_mpwqe(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, bool recycle) { union mlx5e_alloc_unit *alloc_units = wi->alloc_units; bool no_xdp_xmit; int i; /* A common case for AF_XDP. */ if (bitmap_full(wi->xdp_xmit_bitmap, rq->mpwqe.pages_per_wqe)) return; no_xdp_xmit = bitmap_empty(wi->xdp_xmit_bitmap, rq->mpwqe.pages_per_wqe); if (rq->xsk_pool) { /* The `recycle` parameter is ignored, and the page is always * put into the Reuse Ring, because there is no way to return * the page to the userspace when the interface goes down. */ for (i = 0; i < rq->mpwqe.pages_per_wqe; i++) if (no_xdp_xmit || !test_bit(i, wi->xdp_xmit_bitmap)) xsk_buff_free(alloc_units[i].xsk); } else { for (i = 0; i < rq->mpwqe.pages_per_wqe; i++) if (no_xdp_xmit || !test_bit(i, wi->xdp_xmit_bitmap)) mlx5e_page_release_dynamic(rq, alloc_units[i].page, recycle); } } static void mlx5e_post_rx_mpwqe(struct mlx5e_rq *rq, u8 n) { struct mlx5_wq_ll *wq = &rq->mpwqe.wq; do { u16 next_wqe_index = mlx5_wq_ll_get_wqe_next_ix(wq, wq->head); mlx5_wq_ll_push(wq, next_wqe_index); } while (--n); /* ensure wqes are visible to device before updating doorbell record */ dma_wmb(); mlx5_wq_ll_update_db_record(wq); } /* This function returns the size of the continuous free space inside a bitmap * that starts from first and no longer than len including circular ones. */ static int bitmap_find_window(unsigned long *bitmap, int len, int bitmap_size, int first) { int next_one, count; next_one = find_next_bit(bitmap, bitmap_size, first); if (next_one == bitmap_size) { if (bitmap_size - first >= len) return len; next_one = find_next_bit(bitmap, bitmap_size, 0); count = next_one + bitmap_size - first; } else { count = next_one - first; } return min(len, count); } static void build_klm_umr(struct mlx5e_icosq *sq, struct mlx5e_umr_wqe *umr_wqe, __be32 key, u16 offset, u16 klm_len, u16 wqe_bbs) { memset(umr_wqe, 0, offsetof(struct mlx5e_umr_wqe, inline_klms)); umr_wqe->ctrl.opmod_idx_opcode = cpu_to_be32((sq->pc << MLX5_WQE_CTRL_WQE_INDEX_SHIFT) | MLX5_OPCODE_UMR); umr_wqe->ctrl.umr_mkey = key; umr_wqe->ctrl.qpn_ds = cpu_to_be32((sq->sqn << MLX5_WQE_CTRL_QPN_SHIFT) | MLX5E_KLM_UMR_DS_CNT(klm_len)); umr_wqe->uctrl.flags = MLX5_UMR_TRANSLATION_OFFSET_EN | MLX5_UMR_INLINE; umr_wqe->uctrl.xlt_offset = cpu_to_be16(offset); umr_wqe->uctrl.xlt_octowords = cpu_to_be16(klm_len); umr_wqe->uctrl.mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE); } static int mlx5e_build_shampo_hd_umr(struct mlx5e_rq *rq, struct mlx5e_icosq *sq, u16 klm_entries, u16 index) { struct mlx5e_shampo_hd *shampo = rq->mpwqe.shampo; u16 entries, pi, header_offset, err, wqe_bbs, new_entries; u32 lkey = rq->mdev->mlx5e_res.hw_objs.mkey; struct page *page = shampo->last_page; u64 addr = shampo->last_addr; struct mlx5e_dma_info *dma_info; struct mlx5e_umr_wqe *umr_wqe; int headroom, i; headroom = rq->buff.headroom; new_entries = klm_entries - (shampo->pi & (MLX5_UMR_KLM_ALIGNMENT - 1)); entries = ALIGN(klm_entries, MLX5_UMR_KLM_ALIGNMENT); wqe_bbs = MLX5E_KLM_UMR_WQEBBS(entries); pi = mlx5e_icosq_get_next_pi(sq, wqe_bbs); umr_wqe = mlx5_wq_cyc_get_wqe(&sq->wq, pi); build_klm_umr(sq, umr_wqe, shampo->key, index, entries, wqe_bbs); for (i = 0; i < entries; i++, index++) { dma_info = &shampo->info[index]; if (i >= klm_entries || (index < shampo->pi && shampo->pi - index < MLX5_UMR_KLM_ALIGNMENT)) goto update_klm; header_offset = (index & (MLX5E_SHAMPO_WQ_HEADER_PER_PAGE - 1)) << MLX5E_SHAMPO_LOG_MAX_HEADER_ENTRY_SIZE; if (!(header_offset & (PAGE_SIZE - 1))) { union mlx5e_alloc_unit au; err = mlx5e_page_alloc_pool(rq, &au); if (unlikely(err)) goto err_unmap; page = dma_info->page = au.page; addr = dma_info->addr = page_pool_get_dma_addr(au.page); } else { dma_info->addr = addr + header_offset; dma_info->page = page; } update_klm: umr_wqe->inline_klms[i].bcount = cpu_to_be32(MLX5E_RX_MAX_HEAD); umr_wqe->inline_klms[i].key = cpu_to_be32(lkey); umr_wqe->inline_klms[i].va = cpu_to_be64(dma_info->addr + headroom); } sq->db.wqe_info[pi] = (struct mlx5e_icosq_wqe_info) { .wqe_type = MLX5E_ICOSQ_WQE_SHAMPO_HD_UMR, .num_wqebbs = wqe_bbs, .shampo.len = new_entries, }; shampo->pi = (shampo->pi + new_entries) & (shampo->hd_per_wq - 1); shampo->last_page = page; shampo->last_addr = addr; sq->pc += wqe_bbs; sq->doorbell_cseg = &umr_wqe->ctrl; return 0; err_unmap: while (--i >= 0) { dma_info = &shampo->info[--index]; if (!(i & (MLX5E_SHAMPO_WQ_HEADER_PER_PAGE - 1))) { dma_info->addr = ALIGN_DOWN(dma_info->addr, PAGE_SIZE); mlx5e_page_release_dynamic(rq, dma_info->page, true); } } rq->stats->buff_alloc_err++; return err; } static int mlx5e_alloc_rx_hd_mpwqe(struct mlx5e_rq *rq) { struct mlx5e_shampo_hd *shampo = rq->mpwqe.shampo; u16 klm_entries, num_wqe, index, entries_before; struct mlx5e_icosq *sq = rq->icosq; int i, err, max_klm_entries, len; max_klm_entries = MLX5E_MAX_KLM_PER_WQE(rq->mdev); klm_entries = bitmap_find_window(shampo->bitmap, shampo->hd_per_wqe, shampo->hd_per_wq, shampo->pi); if (!klm_entries) return 0; klm_entries += (shampo->pi & (MLX5_UMR_KLM_ALIGNMENT - 1)); index = ALIGN_DOWN(shampo->pi, MLX5_UMR_KLM_ALIGNMENT); entries_before = shampo->hd_per_wq - index; if (unlikely(entries_before < klm_entries)) num_wqe = DIV_ROUND_UP(entries_before, max_klm_entries) + DIV_ROUND_UP(klm_entries - entries_before, max_klm_entries); else num_wqe = DIV_ROUND_UP(klm_entries, max_klm_entries); for (i = 0; i < num_wqe; i++) { len = (klm_entries > max_klm_entries) ? max_klm_entries : klm_entries; if (unlikely(index + len > shampo->hd_per_wq)) len = shampo->hd_per_wq - index; err = mlx5e_build_shampo_hd_umr(rq, sq, len, index); if (unlikely(err)) return err; index = (index + len) & (rq->mpwqe.shampo->hd_per_wq - 1); klm_entries -= len; } return 0; } static int mlx5e_alloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix) { struct mlx5e_mpw_info *wi = mlx5e_get_mpw_info(rq, ix); union mlx5e_alloc_unit *au = &wi->alloc_units[0]; struct mlx5e_icosq *sq = rq->icosq; struct mlx5_wq_cyc *wq = &sq->wq; struct mlx5e_umr_wqe *umr_wqe; u32 offset; /* 17-bit value with MTT. */ u16 pi; int err; int i; if (test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state)) { err = mlx5e_alloc_rx_hd_mpwqe(rq); if (unlikely(err)) goto err; } pi = mlx5e_icosq_get_next_pi(sq, rq->mpwqe.umr_wqebbs); umr_wqe = mlx5_wq_cyc_get_wqe(wq, pi); memcpy(umr_wqe, &rq->mpwqe.umr_wqe, sizeof(struct mlx5e_umr_wqe)); for (i = 0; i < rq->mpwqe.pages_per_wqe; i++, au++) { dma_addr_t addr; err = mlx5e_page_alloc_pool(rq, au); if (unlikely(err)) goto err_unmap; addr = page_pool_get_dma_addr(au->page); umr_wqe->inline_mtts[i] = (struct mlx5_mtt) { .ptag = cpu_to_be64(addr | MLX5_EN_WR), }; } bitmap_zero(wi->xdp_xmit_bitmap, rq->mpwqe.pages_per_wqe); wi->consumed_strides = 0; umr_wqe->ctrl.opmod_idx_opcode = cpu_to_be32((sq->pc << MLX5_WQE_CTRL_WQE_INDEX_SHIFT) | MLX5_OPCODE_UMR); offset = (ix * rq->mpwqe.mtts_per_wqe) * sizeof(struct mlx5_mtt) / MLX5_OCTWORD; umr_wqe->uctrl.xlt_offset = cpu_to_be16(offset); sq->db.wqe_info[pi] = (struct mlx5e_icosq_wqe_info) { .wqe_type = MLX5E_ICOSQ_WQE_UMR_RX, .num_wqebbs = rq->mpwqe.umr_wqebbs, .umr.rq = rq, }; sq->pc += rq->mpwqe.umr_wqebbs; sq->doorbell_cseg = &umr_wqe->ctrl; return 0; err_unmap: while (--i >= 0) { au--; mlx5e_page_release_dynamic(rq, au->page, true); } err: rq->stats->buff_alloc_err++; return err; } /* This function is responsible to dealloc SHAMPO header buffer. * close == true specifies that we are in the middle of closing RQ operation so * we go over all the entries and if they are not in use we free them, * otherwise we only go over a specific range inside the header buffer that are * not in use. */ void mlx5e_shampo_dealloc_hd(struct mlx5e_rq *rq, u16 len, u16 start, bool close) { struct mlx5e_shampo_hd *shampo = rq->mpwqe.shampo; int hd_per_wq = shampo->hd_per_wq; struct page *deleted_page = NULL; struct mlx5e_dma_info *hd_info; int i, index = start; for (i = 0; i < len; i++, index++) { if (index == hd_per_wq) index = 0; if (close && !test_bit(index, shampo->bitmap)) continue; hd_info = &shampo->info[index]; hd_info->addr = ALIGN_DOWN(hd_info->addr, PAGE_SIZE); if (hd_info->page != deleted_page) { deleted_page = hd_info->page; mlx5e_page_release_dynamic(rq, hd_info->page, false); } } if (start + len > hd_per_wq) { len -= hd_per_wq - start; bitmap_clear(shampo->bitmap, start, hd_per_wq - start); start = 0; } bitmap_clear(shampo->bitmap, start, len); } static void mlx5e_dealloc_rx_mpwqe(struct mlx5e_rq *rq, u16 ix) { struct mlx5e_mpw_info *wi = mlx5e_get_mpw_info(rq, ix); /* Don't recycle, this function is called on rq/netdev close */ mlx5e_free_rx_mpwqe(rq, wi, false); } INDIRECT_CALLABLE_SCOPE bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq) { struct mlx5_wq_cyc *wq = &rq->wqe.wq; int wqe_bulk, count; bool busy = false; u16 head; if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state))) return false; if (mlx5_wq_cyc_missing(wq) < rq->wqe.info.wqe_bulk) return false; if (rq->page_pool) page_pool_nid_changed(rq->page_pool, numa_mem_id()); wqe_bulk = mlx5_wq_cyc_missing(wq); head = mlx5_wq_cyc_get_head(wq); /* Don't allow any newly allocated WQEs to share the same page with old * WQEs that aren't completed yet. Stop earlier. */ wqe_bulk -= (head + wqe_bulk) & rq->wqe.info.wqe_index_mask; if (!rq->xsk_pool) count = mlx5e_alloc_rx_wqes(rq, head, wqe_bulk); else if (likely(!rq->xsk_pool->dma_need_sync)) count = mlx5e_xsk_alloc_rx_wqes_batched(rq, head, wqe_bulk); else /* If dma_need_sync is true, it's more efficient to call * xsk_buff_alloc in a loop, rather than xsk_buff_alloc_batch, * because the latter does the same check and returns only one * frame. */ count = mlx5e_xsk_alloc_rx_wqes(rq, head, wqe_bulk); mlx5_wq_cyc_push_n(wq, count); if (unlikely(count != wqe_bulk)) { rq->stats->buff_alloc_err++; busy = true; } /* ensure wqes are visible to device before updating doorbell record */ dma_wmb(); mlx5_wq_cyc_update_db_record(wq); return busy; } void mlx5e_free_icosq_descs(struct mlx5e_icosq *sq) { u16 sqcc; sqcc = sq->cc; while (sqcc != sq->pc) { struct mlx5e_icosq_wqe_info *wi; u16 ci; ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc); wi = &sq->db.wqe_info[ci]; sqcc += wi->num_wqebbs; #ifdef CONFIG_MLX5_EN_TLS switch (wi->wqe_type) { case MLX5E_ICOSQ_WQE_SET_PSV_TLS: mlx5e_ktls_handle_ctx_completion(wi); break; case MLX5E_ICOSQ_WQE_GET_PSV_TLS: mlx5e_ktls_handle_get_psv_completion(wi, sq); break; } #endif } sq->cc = sqcc; } static void mlx5e_handle_shampo_hd_umr(struct mlx5e_shampo_umr umr, struct mlx5e_icosq *sq) { struct mlx5e_channel *c = container_of(sq, struct mlx5e_channel, icosq); struct mlx5e_shampo_hd *shampo; /* assume 1:1 relationship between RQ and icosq */ struct mlx5e_rq *rq = &c->rq; int end, from, len = umr.len; shampo = rq->mpwqe.shampo; end = shampo->hd_per_wq; from = shampo->ci; if (from + len > shampo->hd_per_wq) { len -= end - from; bitmap_set(shampo->bitmap, from, end - from); from = 0; } bitmap_set(shampo->bitmap, from, len); shampo->ci = (shampo->ci + umr.len) & (shampo->hd_per_wq - 1); } int mlx5e_poll_ico_cq(struct mlx5e_cq *cq) { struct mlx5e_icosq *sq = container_of(cq, struct mlx5e_icosq, cq); struct mlx5_cqe64 *cqe; u16 sqcc; int i; if (unlikely(!test_bit(MLX5E_SQ_STATE_ENABLED, &sq->state))) return 0; cqe = mlx5_cqwq_get_cqe(&cq->wq); if (likely(!cqe)) return 0; /* sq->cc must be updated only after mlx5_cqwq_update_db_record(), * otherwise a cq overrun may occur */ sqcc = sq->cc; i = 0; do { u16 wqe_counter; bool last_wqe; mlx5_cqwq_pop(&cq->wq); wqe_counter = be16_to_cpu(cqe->wqe_counter); do { struct mlx5e_icosq_wqe_info *wi; u16 ci; last_wqe = (sqcc == wqe_counter); ci = mlx5_wq_cyc_ctr2ix(&sq->wq, sqcc); wi = &sq->db.wqe_info[ci]; sqcc += wi->num_wqebbs; if (last_wqe && unlikely(get_cqe_opcode(cqe) != MLX5_CQE_REQ)) { netdev_WARN_ONCE(cq->netdev, "Bad OP in ICOSQ CQE: 0x%x\n", get_cqe_opcode(cqe)); mlx5e_dump_error_cqe(&sq->cq, sq->sqn, (struct mlx5_err_cqe *)cqe); mlx5_wq_cyc_wqe_dump(&sq->wq, ci, wi->num_wqebbs); if (!test_and_set_bit(MLX5E_SQ_STATE_RECOVERING, &sq->state)) queue_work(cq->priv->wq, &sq->recover_work); break; } switch (wi->wqe_type) { case MLX5E_ICOSQ_WQE_UMR_RX: wi->umr.rq->mpwqe.umr_completed++; break; case MLX5E_ICOSQ_WQE_NOP: break; case MLX5E_ICOSQ_WQE_SHAMPO_HD_UMR: mlx5e_handle_shampo_hd_umr(wi->shampo, sq); break; #ifdef CONFIG_MLX5_EN_TLS case MLX5E_ICOSQ_WQE_UMR_TLS: break; case MLX5E_ICOSQ_WQE_SET_PSV_TLS: mlx5e_ktls_handle_ctx_completion(wi); break; case MLX5E_ICOSQ_WQE_GET_PSV_TLS: mlx5e_ktls_handle_get_psv_completion(wi, sq); break; #endif default: netdev_WARN_ONCE(cq->netdev, "Bad WQE type in ICOSQ WQE info: 0x%x\n", wi->wqe_type); } } while (!last_wqe); } while ((++i < MLX5E_TX_CQ_POLL_BUDGET) && (cqe = mlx5_cqwq_get_cqe(&cq->wq))); sq->cc = sqcc; mlx5_cqwq_update_db_record(&cq->wq); return i; } INDIRECT_CALLABLE_SCOPE bool mlx5e_post_rx_mpwqes(struct mlx5e_rq *rq) { struct mlx5_wq_ll *wq = &rq->mpwqe.wq; u8 umr_completed = rq->mpwqe.umr_completed; struct mlx5e_icosq *sq = rq->icosq; int alloc_err = 0; u8 missing, i; u16 head; if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state))) return false; if (umr_completed) { mlx5e_post_rx_mpwqe(rq, umr_completed); rq->mpwqe.umr_in_progress -= umr_completed; rq->mpwqe.umr_completed = 0; } missing = mlx5_wq_ll_missing(wq) - rq->mpwqe.umr_in_progress; if (unlikely(rq->mpwqe.umr_in_progress > rq->mpwqe.umr_last_bulk)) rq->stats->congst_umr++; if (likely(missing < rq->mpwqe.min_wqe_bulk)) return false; if (rq->page_pool) page_pool_nid_changed(rq->page_pool, numa_mem_id()); head = rq->mpwqe.actual_wq_head; i = missing; do { alloc_err = rq->xsk_pool ? mlx5e_xsk_alloc_rx_mpwqe(rq, head) : mlx5e_alloc_rx_mpwqe(rq, head); if (unlikely(alloc_err)) break; head = mlx5_wq_ll_get_wqe_next_ix(wq, head); } while (--i); rq->mpwqe.umr_last_bulk = missing - i; if (sq->doorbell_cseg) { mlx5e_notify_hw(&sq->wq, sq->pc, sq->uar_map, sq->doorbell_cseg); sq->doorbell_cseg = NULL; } rq->mpwqe.umr_in_progress += rq->mpwqe.umr_last_bulk; rq->mpwqe.actual_wq_head = head; /* If XSK Fill Ring doesn't have enough frames, report the error, so * that one of the actions can be performed: * 1. If need_wakeup is used, signal that the application has to kick * the driver when it refills the Fill Ring. * 2. Otherwise, busy poll by rescheduling the NAPI poll. */ if (unlikely(alloc_err == -ENOMEM && rq->xsk_pool)) return true; return false; } static void mlx5e_lro_update_tcp_hdr(struct mlx5_cqe64 *cqe, struct tcphdr *tcp) { u8 l4_hdr_type = get_cqe_l4_hdr_type(cqe); u8 tcp_ack = (l4_hdr_type == CQE_L4_HDR_TYPE_TCP_ACK_NO_DATA) || (l4_hdr_type == CQE_L4_HDR_TYPE_TCP_ACK_AND_DATA); tcp->check = 0; tcp->psh = get_cqe_lro_tcppsh(cqe); if (tcp_ack) { tcp->ack = 1; tcp->ack_seq = cqe->lro.ack_seq_num; tcp->window = cqe->lro.tcp_win; } } static void mlx5e_lro_update_hdr(struct sk_buff *skb, struct mlx5_cqe64 *cqe, u32 cqe_bcnt) { struct ethhdr *eth = (struct ethhdr *)(skb->data); struct tcphdr *tcp; int network_depth = 0; __wsum check; __be16 proto; u16 tot_len; void *ip_p; proto = __vlan_get_protocol(skb, eth->h_proto, &network_depth); tot_len = cqe_bcnt - network_depth; ip_p = skb->data + network_depth; if (proto == htons(ETH_P_IP)) { struct iphdr *ipv4 = ip_p; tcp = ip_p + sizeof(struct iphdr); skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; ipv4->ttl = cqe->lro.min_ttl; ipv4->tot_len = cpu_to_be16(tot_len); ipv4->check = 0; ipv4->check = ip_fast_csum((unsigned char *)ipv4, ipv4->ihl); mlx5e_lro_update_tcp_hdr(cqe, tcp); check = csum_partial(tcp, tcp->doff * 4, csum_unfold((__force __sum16)cqe->check_sum)); /* Almost done, don't forget the pseudo header */ tcp->check = csum_tcpudp_magic(ipv4->saddr, ipv4->daddr, tot_len - sizeof(struct iphdr), IPPROTO_TCP, check); } else { u16 payload_len = tot_len - sizeof(struct ipv6hdr); struct ipv6hdr *ipv6 = ip_p; tcp = ip_p + sizeof(struct ipv6hdr); skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; ipv6->hop_limit = cqe->lro.min_ttl; ipv6->payload_len = cpu_to_be16(payload_len); mlx5e_lro_update_tcp_hdr(cqe, tcp); check = csum_partial(tcp, tcp->doff * 4, csum_unfold((__force __sum16)cqe->check_sum)); /* Almost done, don't forget the pseudo header */ tcp->check = csum_ipv6_magic(&ipv6->saddr, &ipv6->daddr, payload_len, IPPROTO_TCP, check); } } static void *mlx5e_shampo_get_packet_hd(struct mlx5e_rq *rq, u16 header_index) { struct mlx5e_dma_info *last_head = &rq->mpwqe.shampo->info[header_index]; u16 head_offset = (last_head->addr & (PAGE_SIZE - 1)) + rq->buff.headroom; return page_address(last_head->page) + head_offset; } static void mlx5e_shampo_update_ipv4_udp_hdr(struct mlx5e_rq *rq, struct iphdr *ipv4) { int udp_off = rq->hw_gro_data->fk.control.thoff; struct sk_buff *skb = rq->hw_gro_data->skb; struct udphdr *uh; uh = (struct udphdr *)(skb->data + udp_off); uh->len = htons(skb->len - udp_off); if (uh->check) uh->check = ~udp_v4_check(skb->len - udp_off, ipv4->saddr, ipv4->daddr, 0); skb->csum_start = (unsigned char *)uh - skb->head; skb->csum_offset = offsetof(struct udphdr, check); skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_L4; } static void mlx5e_shampo_update_ipv6_udp_hdr(struct mlx5e_rq *rq, struct ipv6hdr *ipv6) { int udp_off = rq->hw_gro_data->fk.control.thoff; struct sk_buff *skb = rq->hw_gro_data->skb; struct udphdr *uh; uh = (struct udphdr *)(skb->data + udp_off); uh->len = htons(skb->len - udp_off); if (uh->check) uh->check = ~udp_v6_check(skb->len - udp_off, &ipv6->saddr, &ipv6->daddr, 0); skb->csum_start = (unsigned char *)uh - skb->head; skb->csum_offset = offsetof(struct udphdr, check); skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_L4; } static void mlx5e_shampo_update_fin_psh_flags(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, struct tcphdr *skb_tcp_hd) { u16 header_index = mlx5e_shampo_get_cqe_header_index(rq, cqe); struct tcphdr *last_tcp_hd; void *last_hd_addr; last_hd_addr = mlx5e_shampo_get_packet_hd(rq, header_index); last_tcp_hd = last_hd_addr + ETH_HLEN + rq->hw_gro_data->fk.control.thoff; tcp_flag_word(skb_tcp_hd) |= tcp_flag_word(last_tcp_hd) & (TCP_FLAG_FIN | TCP_FLAG_PSH); } static void mlx5e_shampo_update_ipv4_tcp_hdr(struct mlx5e_rq *rq, struct iphdr *ipv4, struct mlx5_cqe64 *cqe, bool match) { int tcp_off = rq->hw_gro_data->fk.control.thoff; struct sk_buff *skb = rq->hw_gro_data->skb; struct tcphdr *tcp; tcp = (struct tcphdr *)(skb->data + tcp_off); if (match) mlx5e_shampo_update_fin_psh_flags(rq, cqe, tcp); tcp->check = ~tcp_v4_check(skb->len - tcp_off, ipv4->saddr, ipv4->daddr, 0); skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV4; if (ntohs(ipv4->id) == rq->hw_gro_data->second_ip_id) skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_FIXEDID; skb->csum_start = (unsigned char *)tcp - skb->head; skb->csum_offset = offsetof(struct tcphdr, check); if (tcp->cwr) skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN; } static void mlx5e_shampo_update_ipv6_tcp_hdr(struct mlx5e_rq *rq, struct ipv6hdr *ipv6, struct mlx5_cqe64 *cqe, bool match) { int tcp_off = rq->hw_gro_data->fk.control.thoff; struct sk_buff *skb = rq->hw_gro_data->skb; struct tcphdr *tcp; tcp = (struct tcphdr *)(skb->data + tcp_off); if (match) mlx5e_shampo_update_fin_psh_flags(rq, cqe, tcp); tcp->check = ~tcp_v6_check(skb->len - tcp_off, &ipv6->saddr, &ipv6->daddr, 0); skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV6; skb->csum_start = (unsigned char *)tcp - skb->head; skb->csum_offset = offsetof(struct tcphdr, check); if (tcp->cwr) skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN; } static void mlx5e_shampo_update_hdr(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, bool match) { bool is_ipv4 = (rq->hw_gro_data->fk.basic.n_proto == htons(ETH_P_IP)); struct sk_buff *skb = rq->hw_gro_data->skb; skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; skb->ip_summed = CHECKSUM_PARTIAL; if (is_ipv4) { int nhoff = rq->hw_gro_data->fk.control.thoff - sizeof(struct iphdr); struct iphdr *ipv4 = (struct iphdr *)(skb->data + nhoff); __be16 newlen = htons(skb->len - nhoff); csum_replace2(&ipv4->check, ipv4->tot_len, newlen); ipv4->tot_len = newlen; if (ipv4->protocol == IPPROTO_TCP) mlx5e_shampo_update_ipv4_tcp_hdr(rq, ipv4, cqe, match); else mlx5e_shampo_update_ipv4_udp_hdr(rq, ipv4); } else { int nhoff = rq->hw_gro_data->fk.control.thoff - sizeof(struct ipv6hdr); struct ipv6hdr *ipv6 = (struct ipv6hdr *)(skb->data + nhoff); ipv6->payload_len = htons(skb->len - nhoff - sizeof(*ipv6)); if (ipv6->nexthdr == IPPROTO_TCP) mlx5e_shampo_update_ipv6_tcp_hdr(rq, ipv6, cqe, match); else mlx5e_shampo_update_ipv6_udp_hdr(rq, ipv6); } } static inline void mlx5e_skb_set_hash(struct mlx5_cqe64 *cqe, struct sk_buff *skb) { u8 cht = cqe->rss_hash_type; int ht = (cht & CQE_RSS_HTYPE_L4) ? PKT_HASH_TYPE_L4 : (cht & CQE_RSS_HTYPE_IP) ? PKT_HASH_TYPE_L3 : PKT_HASH_TYPE_NONE; skb_set_hash(skb, be32_to_cpu(cqe->rss_hash_result), ht); } static inline bool is_last_ethertype_ip(struct sk_buff *skb, int *network_depth, __be16 *proto) { *proto = ((struct ethhdr *)skb->data)->h_proto; *proto = __vlan_get_protocol(skb, *proto, network_depth); if (*proto == htons(ETH_P_IP)) return pskb_may_pull(skb, *network_depth + sizeof(struct iphdr)); if (*proto == htons(ETH_P_IPV6)) return pskb_may_pull(skb, *network_depth + sizeof(struct ipv6hdr)); return false; } static inline void mlx5e_enable_ecn(struct mlx5e_rq *rq, struct sk_buff *skb) { int network_depth = 0; __be16 proto; void *ip; int rc; if (unlikely(!is_last_ethertype_ip(skb, &network_depth, &proto))) return; ip = skb->data + network_depth; rc = ((proto == htons(ETH_P_IP)) ? IP_ECN_set_ce((struct iphdr *)ip) : IP6_ECN_set_ce(skb, (struct ipv6hdr *)ip)); rq->stats->ecn_mark += !!rc; } static u8 get_ip_proto(struct sk_buff *skb, int network_depth, __be16 proto) { void *ip_p = skb->data + network_depth; return (proto == htons(ETH_P_IP)) ? ((struct iphdr *)ip_p)->protocol : ((struct ipv6hdr *)ip_p)->nexthdr; } #define short_frame(size) ((size) <= ETH_ZLEN + ETH_FCS_LEN) #define MAX_PADDING 8 static void tail_padding_csum_slow(struct sk_buff *skb, int offset, int len, struct mlx5e_rq_stats *stats) { stats->csum_complete_tail_slow++; skb->csum = csum_block_add(skb->csum, skb_checksum(skb, offset, len, 0), offset); } static void tail_padding_csum(struct sk_buff *skb, int offset, struct mlx5e_rq_stats *stats) { u8 tail_padding[MAX_PADDING]; int len = skb->len - offset; void *tail; if (unlikely(len > MAX_PADDING)) { tail_padding_csum_slow(skb, offset, len, stats); return; } tail = skb_header_pointer(skb, offset, len, tail_padding); if (unlikely(!tail)) { tail_padding_csum_slow(skb, offset, len, stats); return; } stats->csum_complete_tail++; skb->csum = csum_block_add(skb->csum, csum_partial(tail, len, 0), offset); } static void mlx5e_skb_csum_fixup(struct sk_buff *skb, int network_depth, __be16 proto, struct mlx5e_rq_stats *stats) { struct ipv6hdr *ip6; struct iphdr *ip4; int pkt_len; /* Fixup vlan headers, if any */ if (network_depth > ETH_HLEN) /* CQE csum is calculated from the IP header and does * not cover VLAN headers (if present). This will add * the checksum manually. */ skb->csum = csum_partial(skb->data + ETH_HLEN, network_depth - ETH_HLEN, skb->csum); /* Fixup tail padding, if any */ switch (proto) { case htons(ETH_P_IP): ip4 = (struct iphdr *)(skb->data + network_depth); pkt_len = network_depth + ntohs(ip4->tot_len); break; case htons(ETH_P_IPV6): ip6 = (struct ipv6hdr *)(skb->data + network_depth); pkt_len = network_depth + sizeof(*ip6) + ntohs(ip6->payload_len); break; default: return; } if (likely(pkt_len >= skb->len)) return; tail_padding_csum(skb, pkt_len, stats); } static inline void mlx5e_handle_csum(struct net_device *netdev, struct mlx5_cqe64 *cqe, struct mlx5e_rq *rq, struct sk_buff *skb, bool lro) { struct mlx5e_rq_stats *stats = rq->stats; int network_depth = 0; __be16 proto; if (unlikely(!(netdev->features & NETIF_F_RXCSUM))) goto csum_none; if (lro) { skb->ip_summed = CHECKSUM_UNNECESSARY; stats->csum_unnecessary++; return; } /* True when explicitly set via priv flag, or XDP prog is loaded */ if (test_bit(MLX5E_RQ_STATE_NO_CSUM_COMPLETE, &rq->state) || get_cqe_tls_offload(cqe)) goto csum_unnecessary; /* CQE csum doesn't cover padding octets in short ethernet * frames. And the pad field is appended prior to calculating * and appending the FCS field. * * Detecting these padded frames requires to verify and parse * IP headers, so we simply force all those small frames to be * CHECKSUM_UNNECESSARY even if they are not padded. */ if (short_frame(skb->len)) goto csum_unnecessary; if (likely(is_last_ethertype_ip(skb, &network_depth, &proto))) { if (unlikely(get_ip_proto(skb, network_depth, proto) == IPPROTO_SCTP)) goto csum_unnecessary; stats->csum_complete++; skb->ip_summed = CHECKSUM_COMPLETE; skb->csum = csum_unfold((__force __sum16)cqe->check_sum); if (test_bit(MLX5E_RQ_STATE_CSUM_FULL, &rq->state)) return; /* CQE csum covers all received bytes */ /* csum might need some fixups ...*/ mlx5e_skb_csum_fixup(skb, network_depth, proto, stats); return; } csum_unnecessary: if (likely((cqe->hds_ip_ext & CQE_L3_OK) && (cqe->hds_ip_ext & CQE_L4_OK))) { skb->ip_summed = CHECKSUM_UNNECESSARY; if (cqe_is_tunneled(cqe)) { skb->csum_level = 1; skb->encapsulation = 1; stats->csum_unnecessary_inner++; return; } stats->csum_unnecessary++; return; } csum_none: skb->ip_summed = CHECKSUM_NONE; stats->csum_none++; } #define MLX5E_CE_BIT_MASK 0x80 static inline void mlx5e_build_rx_skb(struct mlx5_cqe64 *cqe, u32 cqe_bcnt, struct mlx5e_rq *rq, struct sk_buff *skb) { u8 lro_num_seg = be32_to_cpu(cqe->srqn) >> 24; struct mlx5e_rq_stats *stats = rq->stats; struct net_device *netdev = rq->netdev; skb->mac_len = ETH_HLEN; if (unlikely(get_cqe_tls_offload(cqe))) mlx5e_ktls_handle_rx_skb(rq, skb, cqe, &cqe_bcnt); if (unlikely(mlx5_ipsec_is_rx_flow(cqe))) mlx5e_ipsec_offload_handle_rx_skb(netdev, skb, cqe); if (unlikely(mlx5e_macsec_is_rx_flow(cqe))) mlx5e_macsec_offload_handle_rx_skb(netdev, skb, cqe); if (lro_num_seg > 1) { mlx5e_lro_update_hdr(skb, cqe, cqe_bcnt); skb_shinfo(skb)->gso_size = DIV_ROUND_UP(cqe_bcnt, lro_num_seg); /* Subtract one since we already counted this as one * "regular" packet in mlx5e_complete_rx_cqe() */ stats->packets += lro_num_seg - 1; stats->lro_packets++; stats->lro_bytes += cqe_bcnt; } if (unlikely(mlx5e_rx_hw_stamp(rq->tstamp))) skb_hwtstamps(skb)->hwtstamp = mlx5e_cqe_ts_to_ns(rq->ptp_cyc2time, rq->clock, get_cqe_ts(cqe)); skb_record_rx_queue(skb, rq->ix); if (likely(netdev->features & NETIF_F_RXHASH)) mlx5e_skb_set_hash(cqe, skb); if (cqe_has_vlan(cqe)) { __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(cqe->vlan_info)); stats->removed_vlan_packets++; } skb->mark = be32_to_cpu(cqe->sop_drop_qpn) & MLX5E_TC_FLOW_ID_MASK; mlx5e_handle_csum(netdev, cqe, rq, skb, !!lro_num_seg); /* checking CE bit in cqe - MSB in ml_path field */ if (unlikely(cqe->ml_path & MLX5E_CE_BIT_MASK)) mlx5e_enable_ecn(rq, skb); skb->protocol = eth_type_trans(skb, netdev); if (unlikely(mlx5e_skb_is_multicast(skb))) stats->mcast_packets++; } static void mlx5e_shampo_complete_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, u32 cqe_bcnt, struct sk_buff *skb) { struct mlx5e_rq_stats *stats = rq->stats; stats->packets++; stats->gro_packets++; stats->bytes += cqe_bcnt; stats->gro_bytes += cqe_bcnt; if (NAPI_GRO_CB(skb)->count != 1) return; mlx5e_build_rx_skb(cqe, cqe_bcnt, rq, skb); skb_reset_network_header(skb); if (!skb_flow_dissect_flow_keys(skb, &rq->hw_gro_data->fk, 0)) { napi_gro_receive(rq->cq.napi, skb); rq->hw_gro_data->skb = NULL; } } static inline void mlx5e_complete_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, u32 cqe_bcnt, struct sk_buff *skb) { struct mlx5e_rq_stats *stats = rq->stats; stats->packets++; stats->bytes += cqe_bcnt; mlx5e_build_rx_skb(cqe, cqe_bcnt, rq, skb); } static inline struct sk_buff *mlx5e_build_linear_skb(struct mlx5e_rq *rq, void *va, u32 frag_size, u16 headroom, u32 cqe_bcnt, u32 metasize) { struct sk_buff *skb = build_skb(va, frag_size); if (unlikely(!skb)) { rq->stats->buff_alloc_err++; return NULL; } skb_reserve(skb, headroom); skb_put(skb, cqe_bcnt); if (metasize) skb_metadata_set(skb, metasize); return skb; } static void mlx5e_fill_xdp_buff(struct mlx5e_rq *rq, void *va, u16 headroom, u32 len, struct xdp_buff *xdp) { xdp_init_buff(xdp, rq->buff.frame0_sz, &rq->xdp_rxq); xdp_prepare_buff(xdp, va, headroom, len, true); } static struct sk_buff * mlx5e_skb_from_cqe_linear(struct mlx5e_rq *rq, struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt) { union mlx5e_alloc_unit *au = wi->au; u16 rx_headroom = rq->buff.headroom; struct bpf_prog *prog; struct sk_buff *skb; u32 metasize = 0; void *va, *data; dma_addr_t addr; u32 frag_size; va = page_address(au->page) + wi->offset; data = va + rx_headroom; frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt); addr = page_pool_get_dma_addr(au->page); dma_sync_single_range_for_cpu(rq->pdev, addr, wi->offset, frag_size, rq->buff.map_dir); net_prefetch(data); prog = rcu_dereference(rq->xdp_prog); if (prog) { struct xdp_buff xdp; net_prefetchw(va); /* xdp_frame data area */ mlx5e_fill_xdp_buff(rq, va, rx_headroom, cqe_bcnt, &xdp); if (mlx5e_xdp_handle(rq, au->page, prog, &xdp)) return NULL; /* page/packet was consumed by XDP */ rx_headroom = xdp.data - xdp.data_hard_start; metasize = xdp.data - xdp.data_meta; cqe_bcnt = xdp.data_end - xdp.data; } frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt); skb = mlx5e_build_linear_skb(rq, va, frag_size, rx_headroom, cqe_bcnt, metasize); if (unlikely(!skb)) return NULL; /* queue up for recycling/reuse */ page_ref_inc(au->page); return skb; } static struct sk_buff * mlx5e_skb_from_cqe_nonlinear(struct mlx5e_rq *rq, struct mlx5e_wqe_frag_info *wi, u32 cqe_bcnt) { struct mlx5e_rq_frag_info *frag_info = &rq->wqe.info.arr[0]; struct mlx5e_wqe_frag_info *head_wi = wi; union mlx5e_alloc_unit *au = wi->au; u16 rx_headroom = rq->buff.headroom; struct skb_shared_info *sinfo; u32 frag_consumed_bytes; struct bpf_prog *prog; struct xdp_buff xdp; struct sk_buff *skb; dma_addr_t addr; u32 truesize; void *va; va = page_address(au->page) + wi->offset; frag_consumed_bytes = min_t(u32, frag_info->frag_size, cqe_bcnt); addr = page_pool_get_dma_addr(au->page); dma_sync_single_range_for_cpu(rq->pdev, addr, wi->offset, rq->buff.frame0_sz, rq->buff.map_dir); net_prefetchw(va); /* xdp_frame data area */ net_prefetch(va + rx_headroom); mlx5e_fill_xdp_buff(rq, va, rx_headroom, frag_consumed_bytes, &xdp); sinfo = xdp_get_shared_info_from_buff(&xdp); truesize = 0; cqe_bcnt -= frag_consumed_bytes; frag_info++; wi++; while (cqe_bcnt) { skb_frag_t *frag; au = wi->au; frag_consumed_bytes = min_t(u32, frag_info->frag_size, cqe_bcnt); addr = page_pool_get_dma_addr(au->page); dma_sync_single_for_cpu(rq->pdev, addr + wi->offset, frag_consumed_bytes, rq->buff.map_dir); if (!xdp_buff_has_frags(&xdp)) { /* Init on the first fragment to avoid cold cache access * when possible. */ sinfo->nr_frags = 0; sinfo->xdp_frags_size = 0; xdp_buff_set_frags_flag(&xdp); } frag = &sinfo->frags[sinfo->nr_frags++]; __skb_frag_set_page(frag, au->page); skb_frag_off_set(frag, wi->offset); skb_frag_size_set(frag, frag_consumed_bytes); if (page_is_pfmemalloc(au->page)) xdp_buff_set_frag_pfmemalloc(&xdp); sinfo->xdp_frags_size += frag_consumed_bytes; truesize += frag_info->frag_stride; cqe_bcnt -= frag_consumed_bytes; frag_info++; wi++; } au = head_wi->au; prog = rcu_dereference(rq->xdp_prog); if (prog && mlx5e_xdp_handle(rq, au->page, prog, &xdp)) { if (test_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) { int i; for (i = wi - head_wi; i < rq->wqe.info.num_frags; i++) mlx5e_put_rx_frag(rq, &head_wi[i], true); } return NULL; /* page/packet was consumed by XDP */ } skb = mlx5e_build_linear_skb(rq, xdp.data_hard_start, rq->buff.frame0_sz, xdp.data - xdp.data_hard_start, xdp.data_end - xdp.data, xdp.data - xdp.data_meta); if (unlikely(!skb)) return NULL; page_ref_inc(au->page); if (unlikely(xdp_buff_has_frags(&xdp))) { int i; /* sinfo->nr_frags is reset by build_skb, calculate again. */ xdp_update_skb_shared_info(skb, wi - head_wi - 1, sinfo->xdp_frags_size, truesize, xdp_buff_is_frag_pfmemalloc(&xdp)); for (i = 0; i < sinfo->nr_frags; i++) { skb_frag_t *frag = &sinfo->frags[i]; page_ref_inc(skb_frag_page(frag)); } } return skb; } static void trigger_report(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { struct mlx5_err_cqe *err_cqe = (struct mlx5_err_cqe *)cqe; struct mlx5e_priv *priv = rq->priv; if (cqe_syndrome_needs_recover(err_cqe->syndrome) && !test_and_set_bit(MLX5E_RQ_STATE_RECOVERING, &rq->state)) { mlx5e_dump_error_cqe(&rq->cq, rq->rqn, err_cqe); queue_work(priv->wq, &rq->recover_work); } } static void mlx5e_handle_rx_err_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { trigger_report(rq, cqe); rq->stats->wqe_err++; } static void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { struct mlx5_wq_cyc *wq = &rq->wqe.wq; struct mlx5e_wqe_frag_info *wi; struct sk_buff *skb; u32 cqe_bcnt; u16 ci; ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter)); wi = get_frag(rq, ci); cqe_bcnt = be32_to_cpu(cqe->byte_cnt); if (unlikely(MLX5E_RX_ERR_CQE(cqe))) { mlx5e_handle_rx_err_cqe(rq, cqe); goto free_wqe; } skb = INDIRECT_CALL_3(rq->wqe.skb_from_cqe, mlx5e_skb_from_cqe_linear, mlx5e_skb_from_cqe_nonlinear, mlx5e_xsk_skb_from_cqe_linear, rq, wi, cqe_bcnt); if (!skb) { /* probably for XDP */ if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) { /* do not return page to cache, * it will be returned on XDP_TX completion. */ goto wq_cyc_pop; } goto free_wqe; } mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); if (mlx5e_cqe_regb_chain(cqe)) if (!mlx5e_tc_update_skb(cqe, skb)) { dev_kfree_skb_any(skb); goto free_wqe; } napi_gro_receive(rq->cq.napi, skb); free_wqe: mlx5e_free_rx_wqe(rq, wi, true); wq_cyc_pop: mlx5_wq_cyc_pop(wq); } #ifdef CONFIG_MLX5_ESWITCH static void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { struct net_device *netdev = rq->netdev; struct mlx5e_priv *priv = netdev_priv(netdev); struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch_rep *rep = rpriv->rep; struct mlx5_wq_cyc *wq = &rq->wqe.wq; struct mlx5e_wqe_frag_info *wi; struct sk_buff *skb; u32 cqe_bcnt; u16 ci; ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter)); wi = get_frag(rq, ci); cqe_bcnt = be32_to_cpu(cqe->byte_cnt); if (unlikely(MLX5E_RX_ERR_CQE(cqe))) { mlx5e_handle_rx_err_cqe(rq, cqe); goto free_wqe; } skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe, mlx5e_skb_from_cqe_linear, mlx5e_skb_from_cqe_nonlinear, rq, wi, cqe_bcnt); if (!skb) { /* probably for XDP */ if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) { /* do not return page to cache, * it will be returned on XDP_TX completion. */ goto wq_cyc_pop; } goto free_wqe; } mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); if (rep->vlan && skb_vlan_tag_present(skb)) skb_vlan_pop(skb); mlx5e_rep_tc_receive(cqe, rq, skb); free_wqe: mlx5e_free_rx_wqe(rq, wi, true); wq_cyc_pop: mlx5_wq_cyc_pop(wq); } static void mlx5e_handle_rx_cqe_mpwrq_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { u16 cstrides = mpwrq_get_cqe_consumed_strides(cqe); u16 wqe_id = be16_to_cpu(cqe->wqe_id); struct mlx5e_mpw_info *wi = mlx5e_get_mpw_info(rq, wqe_id); u16 stride_ix = mpwrq_get_cqe_stride_index(cqe); u32 wqe_offset = stride_ix << rq->mpwqe.log_stride_sz; u32 head_offset = wqe_offset & ((1 << rq->mpwqe.page_shift) - 1); u32 page_idx = wqe_offset >> rq->mpwqe.page_shift; struct mlx5e_rx_wqe_ll *wqe; struct mlx5_wq_ll *wq; struct sk_buff *skb; u16 cqe_bcnt; wi->consumed_strides += cstrides; if (unlikely(MLX5E_RX_ERR_CQE(cqe))) { mlx5e_handle_rx_err_cqe(rq, cqe); goto mpwrq_cqe_out; } if (unlikely(mpwrq_is_filler_cqe(cqe))) { struct mlx5e_rq_stats *stats = rq->stats; stats->mpwqe_filler_cqes++; stats->mpwqe_filler_strides += cstrides; goto mpwrq_cqe_out; } cqe_bcnt = mpwrq_get_cqe_byte_cnt(cqe); skb = INDIRECT_CALL_2(rq->mpwqe.skb_from_cqe_mpwrq, mlx5e_skb_from_cqe_mpwrq_linear, mlx5e_skb_from_cqe_mpwrq_nonlinear, rq, wi, cqe_bcnt, head_offset, page_idx); if (!skb) goto mpwrq_cqe_out; mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); mlx5e_rep_tc_receive(cqe, rq, skb); mpwrq_cqe_out: if (likely(wi->consumed_strides < rq->mpwqe.num_strides)) return; wq = &rq->mpwqe.wq; wqe = mlx5_wq_ll_get_wqe(wq, wqe_id); mlx5e_free_rx_mpwqe(rq, wi, true); mlx5_wq_ll_pop(wq, cqe->wqe_id, &wqe->next.next_wqe_index); } const struct mlx5e_rx_handlers mlx5e_rx_handlers_rep = { .handle_rx_cqe = mlx5e_handle_rx_cqe_rep, .handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq_rep, }; #endif static void mlx5e_fill_skb_data(struct sk_buff *skb, struct mlx5e_rq *rq, union mlx5e_alloc_unit *au, u32 data_bcnt, u32 data_offset) { net_prefetchw(skb->data); while (data_bcnt) { /* Non-linear mode, hence non-XSK, which always uses PAGE_SIZE. */ u32 pg_consumed_bytes = min_t(u32, PAGE_SIZE - data_offset, data_bcnt); unsigned int truesize; if (test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state)) truesize = pg_consumed_bytes; else truesize = ALIGN(pg_consumed_bytes, BIT(rq->mpwqe.log_stride_sz)); mlx5e_add_skb_frag(rq, skb, au, data_offset, pg_consumed_bytes, truesize); data_bcnt -= pg_consumed_bytes; data_offset = 0; au++; } } static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_nonlinear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, u16 cqe_bcnt, u32 head_offset, u32 page_idx) { union mlx5e_alloc_unit *au = &wi->alloc_units[page_idx]; u16 headlen = min_t(u16, MLX5E_RX_MAX_HEAD, cqe_bcnt); u32 frag_offset = head_offset + headlen; u32 byte_cnt = cqe_bcnt - headlen; union mlx5e_alloc_unit *head_au = au; struct sk_buff *skb; dma_addr_t addr; skb = napi_alloc_skb(rq->cq.napi, ALIGN(MLX5E_RX_MAX_HEAD, sizeof(long))); if (unlikely(!skb)) { rq->stats->buff_alloc_err++; return NULL; } net_prefetchw(skb->data); /* Non-linear mode, hence non-XSK, which always uses PAGE_SIZE. */ if (unlikely(frag_offset >= PAGE_SIZE)) { au++; frag_offset -= PAGE_SIZE; } mlx5e_fill_skb_data(skb, rq, au, byte_cnt, frag_offset); /* copy header */ addr = page_pool_get_dma_addr(head_au->page); mlx5e_copy_skb_header(rq, skb, head_au->page, addr, head_offset, head_offset, headlen); /* skb linear part was allocated with headlen and aligned to long */ skb->tail += headlen; skb->len += headlen; return skb; } static struct sk_buff * mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, u16 cqe_bcnt, u32 head_offset, u32 page_idx) { union mlx5e_alloc_unit *au = &wi->alloc_units[page_idx]; u16 rx_headroom = rq->buff.headroom; struct bpf_prog *prog; struct sk_buff *skb; u32 metasize = 0; void *va, *data; dma_addr_t addr; u32 frag_size; /* Check packet size. Note LRO doesn't use linear SKB */ if (unlikely(cqe_bcnt > rq->hw_mtu)) { rq->stats->oversize_pkts_sw_drop++; return NULL; } va = page_address(au->page) + head_offset; data = va + rx_headroom; frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt); addr = page_pool_get_dma_addr(au->page); dma_sync_single_range_for_cpu(rq->pdev, addr, head_offset, frag_size, rq->buff.map_dir); net_prefetch(data); prog = rcu_dereference(rq->xdp_prog); if (prog) { struct xdp_buff xdp; net_prefetchw(va); /* xdp_frame data area */ mlx5e_fill_xdp_buff(rq, va, rx_headroom, cqe_bcnt, &xdp); if (mlx5e_xdp_handle(rq, au->page, prog, &xdp)) { if (__test_and_clear_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags)) __set_bit(page_idx, wi->xdp_xmit_bitmap); /* non-atomic */ return NULL; /* page/packet was consumed by XDP */ } rx_headroom = xdp.data - xdp.data_hard_start; metasize = xdp.data - xdp.data_meta; cqe_bcnt = xdp.data_end - xdp.data; } frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt); skb = mlx5e_build_linear_skb(rq, va, frag_size, rx_headroom, cqe_bcnt, metasize); if (unlikely(!skb)) return NULL; /* queue up for recycling/reuse */ page_ref_inc(au->page); return skb; } static struct sk_buff * mlx5e_skb_from_cqe_shampo(struct mlx5e_rq *rq, struct mlx5e_mpw_info *wi, struct mlx5_cqe64 *cqe, u16 header_index) { struct mlx5e_dma_info *head = &rq->mpwqe.shampo->info[header_index]; u16 head_offset = head->addr & (PAGE_SIZE - 1); u16 head_size = cqe->shampo.header_size; u16 rx_headroom = rq->buff.headroom; struct sk_buff *skb = NULL; void *hdr, *data; u32 frag_size; hdr = page_address(head->page) + head_offset; data = hdr + rx_headroom; frag_size = MLX5_SKB_FRAG_SZ(rx_headroom + head_size); if (likely(frag_size <= BIT(MLX5E_SHAMPO_LOG_MAX_HEADER_ENTRY_SIZE))) { /* build SKB around header */ dma_sync_single_range_for_cpu(rq->pdev, head->addr, 0, frag_size, rq->buff.map_dir); prefetchw(hdr); prefetch(data); skb = mlx5e_build_linear_skb(rq, hdr, frag_size, rx_headroom, head_size, 0); if (unlikely(!skb)) return NULL; /* queue up for recycling/reuse */ page_ref_inc(head->page); } else { /* allocate SKB and copy header for large header */ rq->stats->gro_large_hds++; skb = napi_alloc_skb(rq->cq.napi, ALIGN(head_size, sizeof(long))); if (unlikely(!skb)) { rq->stats->buff_alloc_err++; return NULL; } prefetchw(skb->data); mlx5e_copy_skb_header(rq, skb, head->page, head->addr, head_offset + rx_headroom, rx_headroom, head_size); /* skb linear part was allocated with headlen and aligned to long */ skb->tail += head_size; skb->len += head_size; } return skb; } static void mlx5e_shampo_align_fragment(struct sk_buff *skb, u8 log_stride_sz) { skb_frag_t *last_frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; unsigned int frag_size = skb_frag_size(last_frag); unsigned int frag_truesize; frag_truesize = ALIGN(frag_size, BIT(log_stride_sz)); skb->truesize += frag_truesize - frag_size; } static void mlx5e_shampo_flush_skb(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, bool match) { struct sk_buff *skb = rq->hw_gro_data->skb; struct mlx5e_rq_stats *stats = rq->stats; stats->gro_skbs++; if (likely(skb_shinfo(skb)->nr_frags)) mlx5e_shampo_align_fragment(skb, rq->mpwqe.log_stride_sz); if (NAPI_GRO_CB(skb)->count > 1) mlx5e_shampo_update_hdr(rq, cqe, match); napi_gro_receive(rq->cq.napi, skb); rq->hw_gro_data->skb = NULL; } static bool mlx5e_hw_gro_skb_has_enough_space(struct sk_buff *skb, u16 data_bcnt) { int nr_frags = skb_shinfo(skb)->nr_frags; return PAGE_SIZE * nr_frags + data_bcnt <= GRO_LEGACY_MAX_SIZE; } static void mlx5e_free_rx_shampo_hd_entry(struct mlx5e_rq *rq, u16 header_index) { struct mlx5e_shampo_hd *shampo = rq->mpwqe.shampo; u64 addr = shampo->info[header_index].addr; if (((header_index + 1) & (MLX5E_SHAMPO_WQ_HEADER_PER_PAGE - 1)) == 0) { shampo->info[header_index].addr = ALIGN_DOWN(addr, PAGE_SIZE); mlx5e_page_release_dynamic(rq, shampo->info[header_index].page, true); } bitmap_clear(shampo->bitmap, header_index, 1); } static void mlx5e_handle_rx_cqe_mpwrq_shampo(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { u16 data_bcnt = mpwrq_get_cqe_byte_cnt(cqe) - cqe->shampo.header_size; u16 header_index = mlx5e_shampo_get_cqe_header_index(rq, cqe); u32 wqe_offset = be32_to_cpu(cqe->shampo.data_offset); u16 cstrides = mpwrq_get_cqe_consumed_strides(cqe); u32 data_offset = wqe_offset & (PAGE_SIZE - 1); u32 cqe_bcnt = mpwrq_get_cqe_byte_cnt(cqe); u16 wqe_id = be16_to_cpu(cqe->wqe_id); u32 page_idx = wqe_offset >> PAGE_SHIFT; u16 head_size = cqe->shampo.header_size; struct sk_buff **skb = &rq->hw_gro_data->skb; bool flush = cqe->shampo.flush; bool match = cqe->shampo.match; struct mlx5e_rq_stats *stats = rq->stats; struct mlx5e_rx_wqe_ll *wqe; union mlx5e_alloc_unit *au; struct mlx5e_mpw_info *wi; struct mlx5_wq_ll *wq; wi = mlx5e_get_mpw_info(rq, wqe_id); wi->consumed_strides += cstrides; if (unlikely(MLX5E_RX_ERR_CQE(cqe))) { mlx5e_handle_rx_err_cqe(rq, cqe); goto mpwrq_cqe_out; } if (unlikely(mpwrq_is_filler_cqe(cqe))) { stats->mpwqe_filler_cqes++; stats->mpwqe_filler_strides += cstrides; goto mpwrq_cqe_out; } stats->gro_match_packets += match; if (*skb && (!match || !(mlx5e_hw_gro_skb_has_enough_space(*skb, data_bcnt)))) { match = false; mlx5e_shampo_flush_skb(rq, cqe, match); } if (!*skb) { if (likely(head_size)) *skb = mlx5e_skb_from_cqe_shampo(rq, wi, cqe, header_index); else *skb = mlx5e_skb_from_cqe_mpwrq_nonlinear(rq, wi, cqe_bcnt, data_offset, page_idx); if (unlikely(!*skb)) goto free_hd_entry; NAPI_GRO_CB(*skb)->count = 1; skb_shinfo(*skb)->gso_size = cqe_bcnt - head_size; } else { NAPI_GRO_CB(*skb)->count++; if (NAPI_GRO_CB(*skb)->count == 2 && rq->hw_gro_data->fk.basic.n_proto == htons(ETH_P_IP)) { void *hd_addr = mlx5e_shampo_get_packet_hd(rq, header_index); int nhoff = ETH_HLEN + rq->hw_gro_data->fk.control.thoff - sizeof(struct iphdr); struct iphdr *iph = (struct iphdr *)(hd_addr + nhoff); rq->hw_gro_data->second_ip_id = ntohs(iph->id); } } if (likely(head_size)) { au = &wi->alloc_units[page_idx]; mlx5e_fill_skb_data(*skb, rq, au, data_bcnt, data_offset); } mlx5e_shampo_complete_rx_cqe(rq, cqe, cqe_bcnt, *skb); if (flush) mlx5e_shampo_flush_skb(rq, cqe, match); free_hd_entry: mlx5e_free_rx_shampo_hd_entry(rq, header_index); mpwrq_cqe_out: if (likely(wi->consumed_strides < rq->mpwqe.num_strides)) return; wq = &rq->mpwqe.wq; wqe = mlx5_wq_ll_get_wqe(wq, wqe_id); mlx5e_free_rx_mpwqe(rq, wi, true); mlx5_wq_ll_pop(wq, cqe->wqe_id, &wqe->next.next_wqe_index); } static void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { u16 cstrides = mpwrq_get_cqe_consumed_strides(cqe); u16 wqe_id = be16_to_cpu(cqe->wqe_id); struct mlx5e_mpw_info *wi = mlx5e_get_mpw_info(rq, wqe_id); u16 stride_ix = mpwrq_get_cqe_stride_index(cqe); u32 wqe_offset = stride_ix << rq->mpwqe.log_stride_sz; u32 head_offset = wqe_offset & ((1 << rq->mpwqe.page_shift) - 1); u32 page_idx = wqe_offset >> rq->mpwqe.page_shift; struct mlx5e_rx_wqe_ll *wqe; struct mlx5_wq_ll *wq; struct sk_buff *skb; u16 cqe_bcnt; wi->consumed_strides += cstrides; if (unlikely(MLX5E_RX_ERR_CQE(cqe))) { mlx5e_handle_rx_err_cqe(rq, cqe); goto mpwrq_cqe_out; } if (unlikely(mpwrq_is_filler_cqe(cqe))) { struct mlx5e_rq_stats *stats = rq->stats; stats->mpwqe_filler_cqes++; stats->mpwqe_filler_strides += cstrides; goto mpwrq_cqe_out; } cqe_bcnt = mpwrq_get_cqe_byte_cnt(cqe); skb = INDIRECT_CALL_3(rq->mpwqe.skb_from_cqe_mpwrq, mlx5e_skb_from_cqe_mpwrq_linear, mlx5e_skb_from_cqe_mpwrq_nonlinear, mlx5e_xsk_skb_from_cqe_mpwrq_linear, rq, wi, cqe_bcnt, head_offset, page_idx); if (!skb) goto mpwrq_cqe_out; mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); if (mlx5e_cqe_regb_chain(cqe)) if (!mlx5e_tc_update_skb(cqe, skb)) { dev_kfree_skb_any(skb); goto mpwrq_cqe_out; } napi_gro_receive(rq->cq.napi, skb); mpwrq_cqe_out: if (likely(wi->consumed_strides < rq->mpwqe.num_strides)) return; wq = &rq->mpwqe.wq; wqe = mlx5_wq_ll_get_wqe(wq, wqe_id); mlx5e_free_rx_mpwqe(rq, wi, true); mlx5_wq_ll_pop(wq, cqe->wqe_id, &wqe->next.next_wqe_index); } int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget) { struct mlx5e_rq *rq = container_of(cq, struct mlx5e_rq, cq); struct mlx5_cqwq *cqwq = &cq->wq; struct mlx5_cqe64 *cqe; int work_done = 0; if (unlikely(!test_bit(MLX5E_RQ_STATE_ENABLED, &rq->state))) return 0; if (rq->cqd.left) { work_done += mlx5e_decompress_cqes_cont(rq, cqwq, 0, budget); if (work_done >= budget) goto out; } cqe = mlx5_cqwq_get_cqe(cqwq); if (!cqe) { if (unlikely(work_done)) goto out; return 0; } do { if (mlx5_get_cqe_format(cqe) == MLX5_COMPRESSED) { work_done += mlx5e_decompress_cqes_start(rq, cqwq, budget - work_done); continue; } mlx5_cqwq_pop(cqwq); INDIRECT_CALL_3(rq->handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq, mlx5e_handle_rx_cqe, mlx5e_handle_rx_cqe_mpwrq_shampo, rq, cqe); } while ((++work_done < budget) && (cqe = mlx5_cqwq_get_cqe(cqwq))); out: if (test_bit(MLX5E_RQ_STATE_SHAMPO, &rq->state) && rq->hw_gro_data->skb) mlx5e_shampo_flush_skb(rq, NULL, false); if (rcu_access_pointer(rq->xdp_prog)) mlx5e_xdp_rx_poll_complete(rq); mlx5_cqwq_update_db_record(cqwq); /* ensure cq space is freed before enabling more cqes */ wmb(); return work_done; } #ifdef CONFIG_MLX5_CORE_IPOIB #define MLX5_IB_GRH_SGID_OFFSET 8 #define MLX5_IB_GRH_DGID_OFFSET 24 #define MLX5_GID_SIZE 16 static inline void mlx5i_complete_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe, u32 cqe_bcnt, struct sk_buff *skb) { struct hwtstamp_config *tstamp; struct mlx5e_rq_stats *stats; struct net_device *netdev; struct mlx5e_priv *priv; char *pseudo_header; u32 flags_rqpn; u32 qpn; u8 *dgid; u8 g; qpn = be32_to_cpu(cqe->sop_drop_qpn) & 0xffffff; netdev = mlx5i_pkey_get_netdev(rq->netdev, qpn); /* No mapping present, cannot process SKB. This might happen if a child * interface is going down while having unprocessed CQEs on parent RQ */ if (unlikely(!netdev)) { /* TODO: add drop counters support */ skb->dev = NULL; pr_warn_once("Unable to map QPN %u to dev - dropping skb\n", qpn); return; } priv = mlx5i_epriv(netdev); tstamp = &priv->tstamp; stats = rq->stats; flags_rqpn = be32_to_cpu(cqe->flags_rqpn); g = (flags_rqpn >> 28) & 3; dgid = skb->data + MLX5_IB_GRH_DGID_OFFSET; if ((!g) || dgid[0] != 0xff) skb->pkt_type = PACKET_HOST; else if (memcmp(dgid, netdev->broadcast + 4, MLX5_GID_SIZE) == 0) skb->pkt_type = PACKET_BROADCAST; else skb->pkt_type = PACKET_MULTICAST; /* Drop packets that this interface sent, ie multicast packets * that the HCA has replicated. */ if (g && (qpn == (flags_rqpn & 0xffffff)) && (memcmp(netdev->dev_addr + 4, skb->data + MLX5_IB_GRH_SGID_OFFSET, MLX5_GID_SIZE) == 0)) { skb->dev = NULL; return; } skb_pull(skb, MLX5_IB_GRH_BYTES); skb->protocol = *((__be16 *)(skb->data)); if (netdev->features & NETIF_F_RXCSUM) { skb->ip_summed = CHECKSUM_COMPLETE; skb->csum = csum_unfold((__force __sum16)cqe->check_sum); stats->csum_complete++; } else { skb->ip_summed = CHECKSUM_NONE; stats->csum_none++; } if (unlikely(mlx5e_rx_hw_stamp(tstamp))) skb_hwtstamps(skb)->hwtstamp = mlx5e_cqe_ts_to_ns(rq->ptp_cyc2time, rq->clock, get_cqe_ts(cqe)); skb_record_rx_queue(skb, rq->ix); if (likely(netdev->features & NETIF_F_RXHASH)) mlx5e_skb_set_hash(cqe, skb); /* 20 bytes of ipoib header and 4 for encap existing */ pseudo_header = skb_push(skb, MLX5_IPOIB_PSEUDO_LEN); memset(pseudo_header, 0, MLX5_IPOIB_PSEUDO_LEN); skb_reset_mac_header(skb); skb_pull(skb, MLX5_IPOIB_HARD_LEN); skb->dev = netdev; stats->packets++; stats->bytes += cqe_bcnt; } static void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { struct mlx5_wq_cyc *wq = &rq->wqe.wq; struct mlx5e_wqe_frag_info *wi; struct sk_buff *skb; u32 cqe_bcnt; u16 ci; ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter)); wi = get_frag(rq, ci); cqe_bcnt = be32_to_cpu(cqe->byte_cnt); if (unlikely(MLX5E_RX_ERR_CQE(cqe))) { rq->stats->wqe_err++; goto wq_free_wqe; } skb = INDIRECT_CALL_2(rq->wqe.skb_from_cqe, mlx5e_skb_from_cqe_linear, mlx5e_skb_from_cqe_nonlinear, rq, wi, cqe_bcnt); if (!skb) goto wq_free_wqe; mlx5i_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); if (unlikely(!skb->dev)) { dev_kfree_skb_any(skb); goto wq_free_wqe; } napi_gro_receive(rq->cq.napi, skb); wq_free_wqe: mlx5e_free_rx_wqe(rq, wi, true); mlx5_wq_cyc_pop(wq); } const struct mlx5e_rx_handlers mlx5i_rx_handlers = { .handle_rx_cqe = mlx5i_handle_rx_cqe, .handle_rx_cqe_mpwqe = NULL, /* Not supported */ }; #endif /* CONFIG_MLX5_CORE_IPOIB */ int mlx5e_rq_set_handlers(struct mlx5e_rq *rq, struct mlx5e_params *params, bool xsk) { struct net_device *netdev = rq->netdev; struct mlx5_core_dev *mdev = rq->mdev; struct mlx5e_priv *priv = rq->priv; switch (rq->wq_type) { case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ: rq->mpwqe.skb_from_cqe_mpwrq = xsk ? mlx5e_xsk_skb_from_cqe_mpwrq_linear : mlx5e_rx_mpwqe_is_linear_skb(mdev, params, NULL) ? mlx5e_skb_from_cqe_mpwrq_linear : mlx5e_skb_from_cqe_mpwrq_nonlinear; rq->post_wqes = mlx5e_post_rx_mpwqes; rq->dealloc_wqe = mlx5e_dealloc_rx_mpwqe; if (params->packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO) { rq->handle_rx_cqe = priv->profile->rx_handlers->handle_rx_cqe_mpwqe_shampo; if (!rq->handle_rx_cqe) { netdev_err(netdev, "RX handler of SHAMPO MPWQE RQ is not set\n"); return -EINVAL; } } else { rq->handle_rx_cqe = priv->profile->rx_handlers->handle_rx_cqe_mpwqe; if (!rq->handle_rx_cqe) { netdev_err(netdev, "RX handler of MPWQE RQ is not set\n"); return -EINVAL; } } break; default: /* MLX5_WQ_TYPE_CYCLIC */ rq->wqe.skb_from_cqe = xsk ? mlx5e_xsk_skb_from_cqe_linear : mlx5e_rx_is_linear_skb(mdev, params, NULL) ? mlx5e_skb_from_cqe_linear : mlx5e_skb_from_cqe_nonlinear; rq->post_wqes = mlx5e_post_rx_wqes; rq->dealloc_wqe = mlx5e_dealloc_rx_wqe; rq->handle_rx_cqe = priv->profile->rx_handlers->handle_rx_cqe; if (!rq->handle_rx_cqe) { netdev_err(netdev, "RX handler of RQ is not set\n"); return -EINVAL; } } return 0; } static void mlx5e_trap_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe) { struct mlx5e_priv *priv = netdev_priv(rq->netdev); struct mlx5_wq_cyc *wq = &rq->wqe.wq; struct mlx5e_wqe_frag_info *wi; struct devlink_port *dl_port; struct sk_buff *skb; u32 cqe_bcnt; u16 trap_id; u16 ci; trap_id = get_cqe_flow_tag(cqe); ci = mlx5_wq_cyc_ctr2ix(wq, be16_to_cpu(cqe->wqe_counter)); wi = get_frag(rq, ci); cqe_bcnt = be32_to_cpu(cqe->byte_cnt); if (unlikely(MLX5E_RX_ERR_CQE(cqe))) { rq->stats->wqe_err++; goto free_wqe; } skb = mlx5e_skb_from_cqe_nonlinear(rq, wi, cqe_bcnt); if (!skb) goto free_wqe; mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); skb_push(skb, ETH_HLEN); dl_port = mlx5e_devlink_get_dl_port(priv); mlx5_devlink_trap_report(rq->mdev, trap_id, skb, dl_port); dev_kfree_skb_any(skb); free_wqe: mlx5e_free_rx_wqe(rq, wi, false); mlx5_wq_cyc_pop(wq); } void mlx5e_rq_set_trap_handlers(struct mlx5e_rq *rq, struct mlx5e_params *params) { rq->wqe.skb_from_cqe = mlx5e_rx_is_linear_skb(rq->mdev, params, NULL) ? mlx5e_skb_from_cqe_linear : mlx5e_skb_from_cqe_nonlinear; rq->post_wqes = mlx5e_post_rx_wqes; rq->dealloc_wqe = mlx5e_dealloc_rx_wqe; rq->handle_rx_cqe = mlx5e_trap_handle_rx_cqe; }
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