From patchwork Mon Feb 10 11:40:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Loftus, Ciara" X-Patchwork-Id: 65691 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 1072BA052F; Mon, 10 Feb 2020 12:39:23 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 851581BE9C; Mon, 10 Feb 2020 12:39:16 +0100 (CET) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 17B171B9BF; Mon, 10 Feb 2020 12:39:13 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Feb 2020 03:39:13 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,424,1574150400"; d="scan'208";a="431573506" Received: from silpixa00373417.ir.intel.com (HELO silpixa00373417.ger.corp.intel.com) ([10.237.223.96]) by fmsmga005.fm.intel.com with ESMTP; 10 Feb 2020 03:39:12 -0800 From: Ciara Loftus To: dev@dpdk.org Cc: Ciara Loftus , stable@dpdk.org Date: Mon, 10 Feb 2020 11:40:07 +0000 Message-Id: <20200210114009.49590-2-ciara.loftus@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200210114009.49590-1-ciara.loftus@intel.com> References: <20200210114009.49590-1-ciara.loftus@intel.com> Subject: [dpdk-dev] [PATCH v3 1/3] net/af_xdp: fix umem frame size & headroom calculations X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The previous frame size calculation incorrectly used mb_pool->private_data_size and didn't include mb_pool->header_size. Instead of performing a manual calculation, use the rte_mempool_calc_obj_size API to determine the frame size. The previous frame headroom calculation also incorrectly used mb_pool->private_data_size and didn't include mb_pool->header_size or the mbuf priv size. Fix this. Fixes: d8a210774e1d ("net/af_xdp: support unaligned umem chunks") Cc: stable@dpdk.org Signed-off-by: Ciara Loftus Reviewed-by: Xiaolong Ye --- drivers/net/af_xdp/rte_eth_af_xdp.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c index 683e2a559..8b189119c 100644 --- a/drivers/net/af_xdp/rte_eth_af_xdp.c +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include #include @@ -755,11 +756,13 @@ xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals __rte_unused, void *base_addr = NULL; struct rte_mempool *mb_pool = rxq->mb_pool; - usr_config.frame_size = rte_pktmbuf_data_room_size(mb_pool) + - ETH_AF_XDP_MBUF_OVERHEAD + - mb_pool->private_data_size; - usr_config.frame_headroom = ETH_AF_XDP_DATA_HEADROOM + - mb_pool->private_data_size; + usr_config.frame_size = rte_mempool_calc_obj_size(mb_pool->elt_size, + mb_pool->flags, + NULL); + usr_config.frame_headroom = mb_pool->header_size + + sizeof(struct rte_mbuf) + + rte_pktmbuf_priv_size(mb_pool) + + RTE_PKTMBUF_HEADROOM; umem = rte_zmalloc_socket("umem", sizeof(*umem), 0, rte_socket_id()); if (umem == NULL) { From patchwork Mon Feb 10 11:40:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Loftus, Ciara" X-Patchwork-Id: 65692 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id B386BA052F; Mon, 10 Feb 2020 12:39:31 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 0A2421BF83; Mon, 10 Feb 2020 12:39:18 +0100 (CET) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 414231BE90; Mon, 10 Feb 2020 12:39:16 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Feb 2020 03:39:15 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,424,1574150400"; d="scan'208";a="431573509" Received: from silpixa00373417.ir.intel.com (HELO silpixa00373417.ger.corp.intel.com) ([10.237.223.96]) by fmsmga005.fm.intel.com with ESMTP; 10 Feb 2020 03:39:14 -0800 From: Ciara Loftus To: dev@dpdk.org Cc: Ciara Loftus , stable@dpdk.org Date: Mon, 10 Feb 2020 11:40:08 +0000 Message-Id: <20200210114009.49590-3-ciara.loftus@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200210114009.49590-1-ciara.loftus@intel.com> References: <20200210114009.49590-1-ciara.loftus@intel.com> Subject: [dpdk-dev] [PATCH v3 2/3] net/af_xdp: use correct fill queue addresses X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The fill queue addresses should start at the beginning of the mempool object instead of the beginning of the mbuf. This is because the umem frame headroom includes the mp hdrobj size. Starting at this point ensures AF_XDP doesn't write past the available room in the frame, in the case of larger packets which are close to the size of the mbuf. Fixes: d8a210774e1d ("net/af_xdp: support unaligned umem chunks") Cc: stable@dpdk.org Signed-off-by: Ciara Loftus Reviewed-by: Xiaolong Ye --- drivers/net/af_xdp/rte_eth_af_xdp.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c index 8b189119c..1e98cd44f 100644 --- a/drivers/net/af_xdp/rte_eth_af_xdp.c +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c @@ -172,7 +172,8 @@ reserve_fill_queue_zc(struct xsk_umem_info *umem, uint16_t reserve_size, uint64_t addr; fq_addr = xsk_ring_prod__fill_addr(fq, idx++); - addr = (uint64_t)bufs[i] - (uint64_t)umem->buffer; + addr = (uint64_t)bufs[i] - (uint64_t)umem->buffer - + umem->mb_pool->header_size; *fq_addr = addr; } @@ -271,8 +272,11 @@ af_xdp_rx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) addr = xsk_umem__extract_addr(addr); bufs[i] = (struct rte_mbuf *) - xsk_umem__get_data(umem->buffer, addr); - bufs[i]->data_off = offset - sizeof(struct rte_mbuf); + xsk_umem__get_data(umem->buffer, addr + + umem->mb_pool->header_size); + bufs[i]->data_off = offset - sizeof(struct rte_mbuf) - + rte_pktmbuf_priv_size(umem->mb_pool) - + umem->mb_pool->header_size; rte_pktmbuf_pkt_len(bufs[i]) = len; rte_pktmbuf_data_len(bufs[i]) = len; @@ -385,7 +389,8 @@ pull_umem_cq(struct xsk_umem_info *umem, int size) #if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) addr = xsk_umem__extract_addr(addr); rte_pktmbuf_free((struct rte_mbuf *) - xsk_umem__get_data(umem->buffer, addr)); + xsk_umem__get_data(umem->buffer, + addr + umem->mb_pool->header_size)); #else rte_ring_enqueue(umem->buf_ring, (void *)addr); #endif @@ -443,9 +448,11 @@ af_xdp_tx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) } desc = xsk_ring_prod__tx_desc(&txq->tx, idx_tx); desc->len = mbuf->pkt_len; - addr = (uint64_t)mbuf - (uint64_t)umem->buffer; + addr = (uint64_t)mbuf - (uint64_t)umem->buffer - + umem->mb_pool->header_size; offset = rte_pktmbuf_mtod(mbuf, uint64_t) - - (uint64_t)mbuf; + (uint64_t)mbuf + + umem->mb_pool->header_size; offset = offset << XSK_UNALIGNED_BUF_OFFSET_SHIFT; desc->addr = addr | offset; count++; @@ -466,9 +473,11 @@ af_xdp_tx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) desc = xsk_ring_prod__tx_desc(&txq->tx, idx_tx); desc->len = mbuf->pkt_len; - addr = (uint64_t)local_mbuf - (uint64_t)umem->buffer; + addr = (uint64_t)local_mbuf - (uint64_t)umem->buffer - + umem->mb_pool->header_size; offset = rte_pktmbuf_mtod(local_mbuf, uint64_t) - - (uint64_t)local_mbuf; + (uint64_t)local_mbuf + + umem->mb_pool->header_size; pkt = xsk_umem__get_data(umem->buffer, addr + offset); offset = offset << XSK_UNALIGNED_BUF_OFFSET_SHIFT; desc->addr = addr | offset; From patchwork Mon Feb 10 11:40:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Loftus, Ciara" X-Patchwork-Id: 65693 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 3F053A052F; Mon, 10 Feb 2020 12:39:41 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B80981BF9E; Mon, 10 Feb 2020 12:39:20 +0100 (CET) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 3C44C1BF95; Mon, 10 Feb 2020 12:39:18 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Feb 2020 03:39:17 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,424,1574150400"; d="scan'208";a="431573514" Received: from silpixa00373417.ir.intel.com (HELO silpixa00373417.ger.corp.intel.com) ([10.237.223.96]) by fmsmga005.fm.intel.com with ESMTP; 10 Feb 2020 03:39:16 -0800 From: Ciara Loftus To: dev@dpdk.org Cc: Ciara Loftus , stable@dpdk.org Date: Mon, 10 Feb 2020 11:40:09 +0000 Message-Id: <20200210114009.49590-4-ciara.loftus@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200210114009.49590-1-ciara.loftus@intel.com> References: <20200210114009.49590-1-ciara.loftus@intel.com> Subject: [dpdk-dev] [PATCH v3 3/3] net/af_xdp: fix maximum MTU value X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The maximum MTU for af_xdp zero copy is equal to the page size less the frame overhead introduced by AF_XDP (XDP HR = 256) and DPDK (frame headroom = 320). The patch updates this value to reflect this. This change also makes it possible to remove unneeded constants for both zero-copy and copy mode. Fixes: d8a210774e1d ("net/af_xdp: support unaligned umem chunks") Cc: stable@dpdk.org Signed-off-by: Ciara Loftus --- drivers/net/af_xdp/rte_eth_af_xdp.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c index 1e98cd44f..75f037c3e 100644 --- a/drivers/net/af_xdp/rte_eth_af_xdp.c +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c @@ -59,13 +59,6 @@ static int af_xdp_logtype; #define ETH_AF_XDP_FRAME_SIZE 2048 #define ETH_AF_XDP_NUM_BUFFERS 4096 -#ifdef XDP_UMEM_UNALIGNED_CHUNK_FLAG -#define ETH_AF_XDP_MBUF_OVERHEAD 128 /* sizeof(struct rte_mbuf) */ -#define ETH_AF_XDP_DATA_HEADROOM \ - (ETH_AF_XDP_MBUF_OVERHEAD + RTE_PKTMBUF_HEADROOM) -#else -#define ETH_AF_XDP_DATA_HEADROOM 0 -#endif #define ETH_AF_XDP_DFLT_NUM_DESCS XSK_RING_CONS__DEFAULT_NUM_DESCS #define ETH_AF_XDP_DFLT_START_QUEUE_IDX 0 #define ETH_AF_XDP_DFLT_QUEUE_COUNT 1 @@ -602,7 +595,14 @@ eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->max_tx_queues = internals->queue_cnt; dev_info->min_mtu = RTE_ETHER_MIN_MTU; - dev_info->max_mtu = ETH_AF_XDP_FRAME_SIZE - ETH_AF_XDP_DATA_HEADROOM; +#if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) + dev_info->max_mtu = getpagesize() - + sizeof(struct rte_mempool_objhdr) - + sizeof(struct rte_mbuf) - + RTE_PKTMBUF_HEADROOM - XDP_PACKET_HEADROOM; +#else + dev_info->max_mtu = ETH_AF_XDP_FRAME_SIZE; +#endif dev_info->default_rxportconf.nb_queues = 1; dev_info->default_txportconf.nb_queues = 1; @@ -804,7 +804,7 @@ xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals, .fill_size = ETH_AF_XDP_DFLT_NUM_DESCS, .comp_size = ETH_AF_XDP_DFLT_NUM_DESCS, .frame_size = ETH_AF_XDP_FRAME_SIZE, - .frame_headroom = ETH_AF_XDP_DATA_HEADROOM }; + .frame_headroom = 0 }; char ring_name[RTE_RING_NAMESIZE]; char mz_name[RTE_MEMZONE_NAMESIZE]; int ret; @@ -829,8 +829,7 @@ xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals, for (i = 0; i < ETH_AF_XDP_NUM_BUFFERS; i++) rte_ring_enqueue(umem->buf_ring, - (void *)(i * ETH_AF_XDP_FRAME_SIZE + - ETH_AF_XDP_DATA_HEADROOM)); + (void *)(i * ETH_AF_XDP_FRAME_SIZE)); snprintf(mz_name, sizeof(mz_name), "af_xdp_umem_%s_%u", internals->if_name, rxq->xsk_queue_idx); @@ -939,7 +938,7 @@ eth_rx_queue_setup(struct rte_eth_dev *dev, /* Now get the space available for data in the mbuf */ buf_size = rte_pktmbuf_data_room_size(mb_pool) - RTE_PKTMBUF_HEADROOM; - data_size = ETH_AF_XDP_FRAME_SIZE - ETH_AF_XDP_DATA_HEADROOM; + data_size = ETH_AF_XDP_FRAME_SIZE; if (data_size > buf_size) { AF_XDP_LOG(ERR, "%s: %d bytes will not fit in mbuf (%d bytes)\n",