From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 74086A0A0F for ; Fri, 9 Apr 2021 05:02:21 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7113B1412E1; Fri, 9 Apr 2021 05:02:19 +0200 (CEST) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by mails.dpdk.org (Postfix) with ESMTP id 185774068E; Fri, 9 Apr 2021 05:02:13 +0200 (CEST) IronPort-SDR: 2PuYvbymEOimtd5EIOXtjAJsXwdih/81WUTgb60tiAHQq2SALOcz/RgBS5Bj38KmFnn8wUAcwu zvG+QSYLLaeg== X-IronPort-AV: E=McAfee;i="6000,8403,9948"; a="173762562" X-IronPort-AV: E=Sophos;i="5.82,208,1613462400"; d="scan'208";a="173762562" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Apr 2021 20:02:13 -0700 IronPort-SDR: JJU+QeXDwxHQdHKBQwHZ/0+sDPJxU77bAlxFhJY70fDVs+0H1T3Lec/2sUNhFwIjK9ZC7Pfuuo gxlElC7ncBlA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,208,1613462400"; d="scan'208";a="380493164" Received: from dpdk-wenzhuo-haswell.sh.intel.com ([10.67.111.137]) by orsmga003.jf.intel.com with ESMTP; 08 Apr 2021 20:02:11 -0700 From: Wenzhuo Lu To: dev@dpdk.org Cc: Wenzhuo Lu , stable@dpdk.org Date: Fri, 9 Apr 2021 11:01:57 +0800 Message-Id: <1617937317-130223-4-git-send-email-wenzhuo.lu@intel.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1617937317-130223-1-git-send-email-wenzhuo.lu@intel.com> References: <1617074128-50681-1-git-send-email-wenzhuo.lu@intel.com> <1617937317-130223-1-git-send-email-wenzhuo.lu@intel.com> Subject: [dpdk-stable] [PATCH v4 3/3] net/i40e: fix segment fault in AVX512 X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" Fix segment fault when failing to get the memory from the pool. Fixes: e6a6a138919f ("net/i40e: add AVX512 vector path") Cc: stable@dpdk.org Reported-by: David Coyle Signed-off-by: Wenzhuo Lu --- drivers/net/i40e/i40e_rxtx_vec_avx2.c | 117 +------------------ drivers/net/i40e/i40e_rxtx_vec_avx512.c | 5 +- drivers/net/i40e/i40e_rxtx_vec_common.h | 201 ++++++++++++++++++++++++++++++++ 3 files changed, 207 insertions(+), 116 deletions(-) diff --git a/drivers/net/i40e/i40e_rxtx_vec_avx2.c b/drivers/net/i40e/i40e_rxtx_vec_avx2.c index 15abd9d..133e2fb 100644 --- a/drivers/net/i40e/i40e_rxtx_vec_avx2.c +++ b/drivers/net/i40e/i40e_rxtx_vec_avx2.c @@ -18,123 +18,10 @@ #pragma GCC diagnostic ignored "-Wcast-qual" #endif -static inline void +static __rte_always_inline void i40e_rxq_rearm(struct i40e_rx_queue *rxq) { - int i; - uint16_t rx_id; - volatile union i40e_rx_desc *rxdp; - struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start]; - - rxdp = rxq->rx_ring + rxq->rxrearm_start; - - /* Pull 'n' more MBUFs into the software ring */ - if (rte_mempool_get_bulk(rxq->mp, - (void *)rxep, - RTE_I40E_RXQ_REARM_THRESH) < 0) { - if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >= - rxq->nb_rx_desc) { - __m128i dma_addr0; - dma_addr0 = _mm_setzero_si128(); - for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) { - rxep[i].mbuf = &rxq->fake_mbuf; - _mm_store_si128((__m128i *)&rxdp[i].read, - dma_addr0); - } - } - rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed += - RTE_I40E_RXQ_REARM_THRESH; - return; - } - -#ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC - struct rte_mbuf *mb0, *mb1; - __m128i dma_addr0, dma_addr1; - __m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM, - RTE_PKTMBUF_HEADROOM); - /* Initialize the mbufs in vector, process 2 mbufs in one loop */ - for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) { - __m128i vaddr0, vaddr1; - - mb0 = rxep[0].mbuf; - mb1 = rxep[1].mbuf; - - /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */ - RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) != - offsetof(struct rte_mbuf, buf_addr) + 8); - vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr); - vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr); - - /* convert pa to dma_addr hdr/data */ - dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0); - dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1); - - /* add headroom to pa values */ - dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room); - dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room); - - /* flush desc with pa dma_addr */ - _mm_store_si128((__m128i *)&rxdp++->read, dma_addr0); - _mm_store_si128((__m128i *)&rxdp++->read, dma_addr1); - } -#else - struct rte_mbuf *mb0, *mb1, *mb2, *mb3; - __m256i dma_addr0_1, dma_addr2_3; - __m256i hdr_room = _mm256_set1_epi64x(RTE_PKTMBUF_HEADROOM); - /* Initialize the mbufs in vector, process 4 mbufs in one loop */ - for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; - i += 4, rxep += 4, rxdp += 4) { - __m128i vaddr0, vaddr1, vaddr2, vaddr3; - __m256i vaddr0_1, vaddr2_3; - - mb0 = rxep[0].mbuf; - mb1 = rxep[1].mbuf; - mb2 = rxep[2].mbuf; - mb3 = rxep[3].mbuf; - - /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */ - RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) != - offsetof(struct rte_mbuf, buf_addr) + 8); - vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr); - vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr); - vaddr2 = _mm_loadu_si128((__m128i *)&mb2->buf_addr); - vaddr3 = _mm_loadu_si128((__m128i *)&mb3->buf_addr); - - /* - * merge 0 & 1, by casting 0 to 256-bit and inserting 1 - * into the high lanes. Similarly for 2 & 3 - */ - vaddr0_1 = _mm256_inserti128_si256( - _mm256_castsi128_si256(vaddr0), vaddr1, 1); - vaddr2_3 = _mm256_inserti128_si256( - _mm256_castsi128_si256(vaddr2), vaddr3, 1); - - /* convert pa to dma_addr hdr/data */ - dma_addr0_1 = _mm256_unpackhi_epi64(vaddr0_1, vaddr0_1); - dma_addr2_3 = _mm256_unpackhi_epi64(vaddr2_3, vaddr2_3); - - /* add headroom to pa values */ - dma_addr0_1 = _mm256_add_epi64(dma_addr0_1, hdr_room); - dma_addr2_3 = _mm256_add_epi64(dma_addr2_3, hdr_room); - - /* flush desc with pa dma_addr */ - _mm256_store_si256((__m256i *)&rxdp->read, dma_addr0_1); - _mm256_store_si256((__m256i *)&(rxdp + 2)->read, dma_addr2_3); - } - -#endif - - rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH; - if (rxq->rxrearm_start >= rxq->nb_rx_desc) - rxq->rxrearm_start = 0; - - rxq->rxrearm_nb -= RTE_I40E_RXQ_REARM_THRESH; - - rx_id = (uint16_t)((rxq->rxrearm_start == 0) ? - (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1)); - - /* Update the tail pointer on the NIC */ - I40E_PCI_REG_WC_WRITE(rxq->qrx_tail, rx_id); + return i40e_rxq_rearm_cmn(rxq, false); } #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC diff --git a/drivers/net/i40e/i40e_rxtx_vec_avx512.c b/drivers/net/i40e/i40e_rxtx_vec_avx512.c index 862c916..e02fdd4 100644 --- a/drivers/net/i40e/i40e_rxtx_vec_avx512.c +++ b/drivers/net/i40e/i40e_rxtx_vec_avx512.c @@ -20,7 +20,7 @@ #define RTE_I40E_DESCS_PER_LOOP_AVX 8 -static inline void +static __rte_always_inline void i40e_rxq_rearm(struct i40e_rx_queue *rxq) { int i; @@ -32,6 +32,9 @@ rxdp = rxq->rx_ring + rxq->rxrearm_start; + if (unlikely(!cache)) + return i40e_rxq_rearm_cmn(rxq, true); + /* We need to pull 'n' more MBUFs into the software ring from mempool * We inline the mempool function here, so we can vectorize the copy * from the cache into the shadow ring. diff --git a/drivers/net/i40e/i40e_rxtx_vec_common.h b/drivers/net/i40e/i40e_rxtx_vec_common.h index 33cebbe..d4f7688 100644 --- a/drivers/net/i40e/i40e_rxtx_vec_common.h +++ b/drivers/net/i40e/i40e_rxtx_vec_common.h @@ -11,6 +11,10 @@ #include "i40e_ethdev.h" #include "i40e_rxtx.h" +#ifndef __INTEL_COMPILER +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif + static inline uint16_t reassemble_packets(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_bufs, uint16_t nb_bufs, uint8_t *split_flags) @@ -252,4 +256,201 @@ return -1; #endif } + +#ifdef RTE_ARCH_X86 +static __rte_always_inline void +i40e_rxq_rearm_cmn(struct i40e_rx_queue *rxq, __rte_unused bool avx512) +{ + int i; + uint16_t rx_id; + volatile union i40e_rx_desc *rxdp; + struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start]; + + rxdp = rxq->rx_ring + rxq->rxrearm_start; + + /* Pull 'n' more MBUFs into the software ring */ + if (rte_mempool_get_bulk(rxq->mp, + (void *)rxep, + RTE_I40E_RXQ_REARM_THRESH) < 0) { + if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >= + rxq->nb_rx_desc) { + __m128i dma_addr0; + dma_addr0 = _mm_setzero_si128(); + for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) { + rxep[i].mbuf = &rxq->fake_mbuf; + _mm_store_si128((__m128i *)&rxdp[i].read, + dma_addr0); + } + } + rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed += + RTE_I40E_RXQ_REARM_THRESH; + return; + } + +#ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC + struct rte_mbuf *mb0, *mb1; + __m128i dma_addr0, dma_addr1; + __m128i hdr_room = _mm_set_epi64x(RTE_PKTMBUF_HEADROOM, + RTE_PKTMBUF_HEADROOM); + /* Initialize the mbufs in vector, process 2 mbufs in one loop */ + for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) { + __m128i vaddr0, vaddr1; + + mb0 = rxep[0].mbuf; + mb1 = rxep[1].mbuf; + + /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */ + RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) != + offsetof(struct rte_mbuf, buf_addr) + 8); + vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr); + vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr); + + /* convert pa to dma_addr hdr/data */ + dma_addr0 = _mm_unpackhi_epi64(vaddr0, vaddr0); + dma_addr1 = _mm_unpackhi_epi64(vaddr1, vaddr1); + + /* add headroom to pa values */ + dma_addr0 = _mm_add_epi64(dma_addr0, hdr_room); + dma_addr1 = _mm_add_epi64(dma_addr1, hdr_room); + + /* flush desc with pa dma_addr */ + _mm_store_si128((__m128i *)&rxdp++->read, dma_addr0); + _mm_store_si128((__m128i *)&rxdp++->read, dma_addr1); + } +#else +#ifdef CC_AVX512_SUPPORT + if (avx512) { + struct rte_mbuf *mb0, *mb1, *mb2, *mb3; + struct rte_mbuf *mb4, *mb5, *mb6, *mb7; + __m512i dma_addr0_3, dma_addr4_7; + __m512i hdr_room = _mm512_set1_epi64(RTE_PKTMBUF_HEADROOM); + /* Initialize the mbufs in vector, process 8 mbufs in one loop */ + for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; + i += 8, rxep += 8, rxdp += 8) { + __m128i vaddr0, vaddr1, vaddr2, vaddr3; + __m128i vaddr4, vaddr5, vaddr6, vaddr7; + __m256i vaddr0_1, vaddr2_3; + __m256i vaddr4_5, vaddr6_7; + __m512i vaddr0_3, vaddr4_7; + + mb0 = rxep[0].mbuf; + mb1 = rxep[1].mbuf; + mb2 = rxep[2].mbuf; + mb3 = rxep[3].mbuf; + mb4 = rxep[4].mbuf; + mb5 = rxep[5].mbuf; + mb6 = rxep[6].mbuf; + mb7 = rxep[7].mbuf; + + /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */ + RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) != + offsetof(struct rte_mbuf, buf_addr) + 8); + vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr); + vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr); + vaddr2 = _mm_loadu_si128((__m128i *)&mb2->buf_addr); + vaddr3 = _mm_loadu_si128((__m128i *)&mb3->buf_addr); + vaddr4 = _mm_loadu_si128((__m128i *)&mb4->buf_addr); + vaddr5 = _mm_loadu_si128((__m128i *)&mb5->buf_addr); + vaddr6 = _mm_loadu_si128((__m128i *)&mb6->buf_addr); + vaddr7 = _mm_loadu_si128((__m128i *)&mb7->buf_addr); + + /** + * merge 0 & 1, by casting 0 to 256-bit and inserting 1 + * into the high lanes. Similarly for 2 & 3, and so on. + */ + vaddr0_1 = + _mm256_inserti128_si256(_mm256_castsi128_si256(vaddr0), + vaddr1, 1); + vaddr2_3 = + _mm256_inserti128_si256(_mm256_castsi128_si256(vaddr2), + vaddr3, 1); + vaddr4_5 = + _mm256_inserti128_si256(_mm256_castsi128_si256(vaddr4), + vaddr5, 1); + vaddr6_7 = + _mm256_inserti128_si256(_mm256_castsi128_si256(vaddr6), + vaddr7, 1); + vaddr0_3 = + _mm512_inserti64x4(_mm512_castsi256_si512(vaddr0_1), + vaddr2_3, 1); + vaddr4_7 = + _mm512_inserti64x4(_mm512_castsi256_si512(vaddr4_5), + vaddr6_7, 1); + + /* convert pa to dma_addr hdr/data */ + dma_addr0_3 = _mm512_unpackhi_epi64(vaddr0_3, vaddr0_3); + dma_addr4_7 = _mm512_unpackhi_epi64(vaddr4_7, vaddr4_7); + + /* add headroom to pa values */ + dma_addr0_3 = _mm512_add_epi64(dma_addr0_3, hdr_room); + dma_addr4_7 = _mm512_add_epi64(dma_addr4_7, hdr_room); + + /* flush desc with pa dma_addr */ + _mm512_store_si512((__m512i *)&rxdp->read, dma_addr0_3); + _mm512_store_si512((__m512i *)&(rxdp + 4)->read, dma_addr4_7); + } + } else +#endif + { + struct rte_mbuf *mb0, *mb1, *mb2, *mb3; + __m256i dma_addr0_1, dma_addr2_3; + __m256i hdr_room = _mm256_set1_epi64x(RTE_PKTMBUF_HEADROOM); + /* Initialize the mbufs in vector, process 4 mbufs in one loop */ + for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; + i += 4, rxep += 4, rxdp += 4) { + __m128i vaddr0, vaddr1, vaddr2, vaddr3; + __m256i vaddr0_1, vaddr2_3; + + mb0 = rxep[0].mbuf; + mb1 = rxep[1].mbuf; + mb2 = rxep[2].mbuf; + mb3 = rxep[3].mbuf; + + /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */ + RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, buf_iova) != + offsetof(struct rte_mbuf, buf_addr) + 8); + vaddr0 = _mm_loadu_si128((__m128i *)&mb0->buf_addr); + vaddr1 = _mm_loadu_si128((__m128i *)&mb1->buf_addr); + vaddr2 = _mm_loadu_si128((__m128i *)&mb2->buf_addr); + vaddr3 = _mm_loadu_si128((__m128i *)&mb3->buf_addr); + + /* + * merge 0 & 1, by casting 0 to 256-bit and inserting 1 + * into the high lanes. Similarly for 2 & 3 + */ + vaddr0_1 = _mm256_inserti128_si256( + _mm256_castsi128_si256(vaddr0), vaddr1, 1); + vaddr2_3 = _mm256_inserti128_si256( + _mm256_castsi128_si256(vaddr2), vaddr3, 1); + + /* convert pa to dma_addr hdr/data */ + dma_addr0_1 = _mm256_unpackhi_epi64(vaddr0_1, vaddr0_1); + dma_addr2_3 = _mm256_unpackhi_epi64(vaddr2_3, vaddr2_3); + + /* add headroom to pa values */ + dma_addr0_1 = _mm256_add_epi64(dma_addr0_1, hdr_room); + dma_addr2_3 = _mm256_add_epi64(dma_addr2_3, hdr_room); + + /* flush desc with pa dma_addr */ + _mm256_store_si256((__m256i *)&rxdp->read, dma_addr0_1); + _mm256_store_si256((__m256i *)&(rxdp + 2)->read, dma_addr2_3); + } + } + +#endif + + rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH; + if (rxq->rxrearm_start >= rxq->nb_rx_desc) + rxq->rxrearm_start = 0; + + rxq->rxrearm_nb -= RTE_I40E_RXQ_REARM_THRESH; + + rx_id = (uint16_t)((rxq->rxrearm_start == 0) ? + (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1)); + + /* Update the tail pointer on the NIC */ + I40E_PCI_REG_WC_WRITE(rxq->qrx_tail, rx_id); +} +#endif + #endif -- 1.9.3