From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 --- 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; -- 2.17.1