From patchwork Thu Aug 29 15:02:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Loftus, Ciara" X-Patchwork-Id: 58281 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 925AB1E4E9; Thu, 29 Aug 2019 17:04:03 +0200 (CEST) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 795D51C1F1 for ; Thu, 29 Aug 2019 17:04:01 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Aug 2019 08:03:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,443,1559545200"; d="scan'208";a="183500445" Received: from silpixa00399839.ir.intel.com (HELO localhost.localdomain) ([10.237.223.65]) by orsmga003.jf.intel.com with ESMTP; 29 Aug 2019 08:03:36 -0700 From: Ciara Loftus To: dev@dpdk.org Cc: ciara.loftus@intel.com, xiaolong.ye@intel.com, bruce.richardson@intel.com, Kevin Laatz Date: Thu, 29 Aug 2019 15:02:59 +0000 Message-Id: <20190829150259.22206-1-ciara.loftus@intel.com> X-Mailer: git-send-email 2.17.1 Subject: [dpdk-dev] [PATCH] net/af_xdp: enable support for unaligned umem chunks 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" This patch enables the unaligned chunks feature for AF_XDP which allows chunks to be placed at arbitrary places in the umem, as opposed to them being required to be aligned to 2k. This allows for DPDK application mempools to be mapped directly into the umem and in turn enable zero copy transfer between umem and the PMD. This patch replaces the zero copy via external mbuf mechanism introduced in commit e9ff8bb71943 ("net/af_xdp: enable zero copy by external mbuf"). The pmd_zero copy vdev argument is also removed as now the PMD will auto-detect presence of the unaligned chunks feature and enable it if so and otherwise fall back to copy mode if not detected. When enabled, this feature significantly improves single-core performance of the PMD. Signed-off-by: Ciara Loftus Signed-off-by: Kevin Laatz --- doc/guides/nics/af_xdp.rst | 1 - doc/guides/rel_notes/release_19_11.rst | 9 + drivers/net/af_xdp/rte_eth_af_xdp.c | 304 ++++++++++++++++++------- 3 files changed, 231 insertions(+), 83 deletions(-) diff --git a/doc/guides/nics/af_xdp.rst b/doc/guides/nics/af_xdp.rst index ec46f08f0..48dd788ac 100644 --- a/doc/guides/nics/af_xdp.rst +++ b/doc/guides/nics/af_xdp.rst @@ -35,7 +35,6 @@ The following options can be provided to set up an af_xdp port in DPDK. * ``iface`` - name of the Kernel interface to attach to (required); * ``start_queue`` - starting netdev queue id (optional, default 0); * ``queue_count`` - total netdev queue number (optional, default 1); -* ``pmd_zero_copy`` - enable zero copy or not (optional, default 0); Prerequisites ------------- diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst index 8490d897c..28a8e5372 100644 --- a/doc/guides/rel_notes/release_19_11.rst +++ b/doc/guides/rel_notes/release_19_11.rst @@ -56,6 +56,13 @@ New Features Also, make sure to start the actual text at the margin. ========================================================= +* **Updated the AF_XDP PMD.** + + Updated the AF_XDP PMD. The new features include: + + * Enabled zero copy between application mempools and UMEM by enabling the + XDP_UMEM_UNALIGNED_CHUNKS UMEM flag. + Removed Items ------------- @@ -69,6 +76,8 @@ Removed Items Also, make sure to start the actual text at the margin. ========================================================= +* Removed AF_XDP pmd_zero copy vdev argument. Support is now auto-detected. + API Changes ----------- diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c index 41ed5b2af..7956d5778 100644 --- a/drivers/net/af_xdp/rte_eth_af_xdp.c +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c @@ -58,7 +58,13 @@ 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 @@ -73,7 +79,8 @@ struct xsk_umem_info { struct xsk_umem *umem; struct rte_ring *buf_ring; const struct rte_memzone *mz; - int pmd_zc; + struct rte_mempool *mb_pool; + void *buffer; }; struct rx_stats { @@ -98,10 +105,12 @@ struct pkt_rx_queue { struct tx_stats { uint64_t tx_pkts; uint64_t tx_bytes; + uint64_t tx_dropped; }; struct pkt_tx_queue { struct xsk_ring_prod tx; + struct xsk_umem_info *umem; struct tx_stats stats; @@ -117,7 +126,6 @@ struct pmd_internals { int max_queue_cnt; int combined_queue_cnt; - int pmd_zc; struct rte_ether_addr eth_addr; struct pkt_rx_queue *rx_queues; @@ -127,13 +135,11 @@ struct pmd_internals { #define ETH_AF_XDP_IFACE_ARG "iface" #define ETH_AF_XDP_START_QUEUE_ARG "start_queue" #define ETH_AF_XDP_QUEUE_COUNT_ARG "queue_count" -#define ETH_AF_XDP_PMD_ZC_ARG "pmd_zero_copy" static const char * const valid_arguments[] = { ETH_AF_XDP_IFACE_ARG, ETH_AF_XDP_START_QUEUE_ARG, ETH_AF_XDP_QUEUE_COUNT_ARG, - ETH_AF_XDP_PMD_ZC_ARG, NULL }; @@ -148,9 +154,30 @@ static inline int reserve_fill_queue(struct xsk_umem_info *umem, uint16_t reserve_size) { struct xsk_ring_prod *fq = &umem->fq; - void *addrs[reserve_size]; uint32_t idx; uint16_t i; +#if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) + + if (unlikely(!xsk_ring_prod__reserve(fq, reserve_size, &idx))) { + AF_XDP_LOG(DEBUG, "Failed to reserve enough fq descs.\n"); + return -1; + } + + for (i = 0; i < reserve_size; i++) { + struct rte_mbuf *mbuf; + __u64 *fq_addr; + uint64_t addr; + + mbuf = rte_pktmbuf_alloc(umem->mb_pool); + if (unlikely(mbuf == NULL)) + break; + + fq_addr = xsk_ring_prod__fill_addr(fq, idx++); + addr = (uint64_t)mbuf - (uint64_t)umem->buffer; + *fq_addr = addr; + } +#else + void *addrs[reserve_size]; if (rte_ring_dequeue_bulk(umem->buf_ring, addrs, reserve_size, NULL) != reserve_size) { @@ -171,21 +198,13 @@ reserve_fill_queue(struct xsk_umem_info *umem, uint16_t reserve_size) fq_addr = xsk_ring_prod__fill_addr(fq, idx++); *fq_addr = (uint64_t)addrs[i]; } +#endif xsk_ring_prod__submit(fq, reserve_size); return 0; } -static void -umem_buf_release_to_fq(void *addr, void *opaque) -{ - struct xsk_umem_info *umem = (struct xsk_umem_info *)opaque; - uint64_t umem_addr = (uint64_t)addr - umem->mz->addr_64; - - rte_ring_enqueue(umem->buf_ring, (void *)umem_addr); -} - static uint16_t eth_af_xdp_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) { @@ -194,12 +213,53 @@ eth_af_xdp_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) struct xsk_umem_info *umem = rxq->umem; struct xsk_ring_prod *fq = &umem->fq; uint32_t idx_rx = 0; - uint32_t free_thresh = fq->size >> 1; - int pmd_zc = umem->pmd_zc; - struct rte_mbuf *mbufs[ETH_AF_XDP_RX_BATCH_SIZE]; unsigned long dropped = 0; unsigned long rx_bytes = 0; int rcvd, i; +#if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) + + rcvd = xsk_ring_cons__peek(rx, nb_pkts, &idx_rx); + if (rcvd == 0) { +#if defined(XDP_USE_NEED_WAKEUP) + if (xsk_ring_prod__needs_wakeup(fq)) + (void)poll(rxq->fds, 1, 1000); +#endif + + return rcvd; + } + + for (i = 0; i < rcvd; i++) { + const struct xdp_desc *desc; + uint64_t addr; + uint32_t len; + uint64_t offset; + + desc = xsk_ring_cons__rx_desc(rx, idx_rx++); + addr = desc->addr; + len = desc->len; + + offset = xsk_umem__extract_offset(addr); + 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); + + rte_pktmbuf_pkt_len(bufs[i]) = len; + rte_pktmbuf_data_len(bufs[i]) = len; + rx_bytes += len; + } + + xsk_ring_cons__release(rx, rcvd); + + /* statistics */ + rxq->stats.rx_pkts += (rcvd - dropped); + rxq->stats.rx_bytes += rx_bytes; + + (void)reserve_fill_queue(umem, rcvd); +#else + uint32_t free_thresh = fq->size >> 1; + struct rte_mbuf *mbufs[ETH_AF_XDP_RX_BATCH_SIZE]; nb_pkts = RTE_MIN(nb_pkts, ETH_AF_XDP_RX_BATCH_SIZE); @@ -224,25 +284,14 @@ eth_af_xdp_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) uint64_t addr; uint32_t len; void *pkt; - uint16_t buf_len = ETH_AF_XDP_FRAME_SIZE; - struct rte_mbuf_ext_shared_info *shinfo; desc = xsk_ring_cons__rx_desc(rx, idx_rx++); addr = desc->addr; len = desc->len; pkt = xsk_umem__get_data(rxq->umem->mz->addr, addr); - if (pmd_zc) { - shinfo = rte_pktmbuf_ext_shinfo_init_helper(pkt, - &buf_len, umem_buf_release_to_fq, umem); - - rte_pktmbuf_attach_extbuf(mbufs[i], pkt, 0, buf_len, - shinfo); - } else { - rte_memcpy(rte_pktmbuf_mtod(mbufs[i], void *), - pkt, len); - rte_ring_enqueue(umem->buf_ring, (void *)addr); - } + rte_memcpy(rte_pktmbuf_mtod(mbufs[i], void *), pkt, len); + rte_ring_enqueue(umem->buf_ring, (void *)addr); rte_pktmbuf_pkt_len(mbufs[i]) = len; rte_pktmbuf_data_len(mbufs[i]) = len; rx_bytes += len; @@ -259,6 +308,7 @@ eth_af_xdp_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) if (rcvd != nb_pkts) rte_mempool_put_bulk(rxq->mb_pool, (void **)&mbufs[rcvd], nb_pkts - rcvd); +#endif return rcvd; } @@ -275,7 +325,14 @@ pull_umem_cq(struct xsk_umem_info *umem, int size) for (i = 0; i < n; i++) { uint64_t addr; addr = *xsk_ring_cons__comp_addr(cq, idx_cq++); + +#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)); +#else rte_ring_enqueue(umem->buf_ring, (void *)addr); +#endif } xsk_ring_cons__release(cq, n); @@ -284,7 +341,7 @@ pull_umem_cq(struct xsk_umem_info *umem, int size) static void kick_tx(struct pkt_tx_queue *txq) { - struct xsk_umem_info *umem = txq->pair->umem; + struct xsk_umem_info *umem = txq->umem; #if defined(XDP_USE_NEED_WAKEUP) if (xsk_ring_prod__needs_wakeup(&txq->tx)) @@ -299,28 +356,70 @@ kick_tx(struct pkt_tx_queue *txq) if (errno == EAGAIN) pull_umem_cq(umem, ETH_AF_XDP_TX_BATCH_SIZE); } - pull_umem_cq(umem, ETH_AF_XDP_TX_BATCH_SIZE); -} - -static inline bool -in_umem_range(struct xsk_umem_info *umem, uint64_t addr) -{ - uint64_t mz_base_addr = umem->mz->addr_64; - - return addr >= mz_base_addr && addr < mz_base_addr + umem->mz->len; } static uint16_t eth_af_xdp_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) { struct pkt_tx_queue *txq = queue; - struct xsk_umem_info *umem = txq->pair->umem; + struct xsk_umem_info *umem = txq->umem; struct rte_mbuf *mbuf; - int pmd_zc = umem->pmd_zc; - void *addrs[ETH_AF_XDP_TX_BATCH_SIZE]; unsigned long tx_bytes = 0; int i; uint32_t idx_tx; + uint16_t dropped = 0; +#if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) + + pull_umem_cq(umem, nb_pkts); + + nb_pkts = xsk_ring_prod__reserve(&txq->tx, nb_pkts, &idx_tx); + + for (i = 0; i < nb_pkts; i++) { + struct xdp_desc *desc; + uint64_t addr, offset; + + desc = xsk_ring_prod__tx_desc(&txq->tx, idx_tx + i); + mbuf = bufs[i]; + desc->len = mbuf->pkt_len; + + if (mbuf->pool == umem->mb_pool) { + addr = (uint64_t)mbuf - (uint64_t)umem->buffer; + offset = rte_pktmbuf_mtod(mbuf, uint64_t) - + (uint64_t)mbuf; + offset = offset << XSK_UNALIGNED_BUF_OFFSET_SHIFT; + desc->addr = addr; + desc->addr |= offset; + } else { + struct rte_mbuf *local_mbuf = + rte_pktmbuf_alloc(umem->mb_pool); + void *pkt; + + if (!local_mbuf) { + rte_pktmbuf_free(mbuf); + dropped++; + continue; + } + + addr = (uint64_t)local_mbuf - (uint64_t)umem->buffer; + offset = rte_pktmbuf_mtod(local_mbuf, uint64_t) - + (uint64_t)local_mbuf; + pkt = xsk_umem__get_data(umem->buffer, addr + offset); + offset = offset << XSK_UNALIGNED_BUF_OFFSET_SHIFT; + desc->addr = addr; + desc->addr |= offset; + rte_memcpy(pkt, rte_pktmbuf_mtod(mbuf, void *), + desc->len); + rte_pktmbuf_free(mbuf); + } + + tx_bytes += mbuf->pkt_len; + } + + xsk_ring_prod__submit(&txq->tx, nb_pkts - dropped); + + kick_tx(txq); +#else + void *addrs[ETH_AF_XDP_TX_BATCH_SIZE]; nb_pkts = RTE_MIN(nb_pkts, ETH_AF_XDP_TX_BATCH_SIZE); @@ -333,6 +432,7 @@ eth_af_xdp_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) if (xsk_ring_prod__reserve(&txq->tx, nb_pkts, &idx_tx) != nb_pkts) { kick_tx(txq); + pull_umem_cq(umem, ETH_AF_XDP_TX_BATCH_SIZE); rte_ring_enqueue_bulk(umem->buf_ring, addrs, nb_pkts, NULL); return 0; } @@ -345,35 +445,23 @@ eth_af_xdp_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) mbuf = bufs[i]; desc->len = mbuf->pkt_len; - /* - * We need to make sure the external mbuf address is within - * current port's umem memzone range - */ - if (pmd_zc && RTE_MBUF_HAS_EXTBUF(mbuf) && - in_umem_range(umem, (uint64_t)mbuf->buf_addr)) { - desc->addr = (uint64_t)mbuf->buf_addr - - umem->mz->addr_64; - mbuf->buf_addr = xsk_umem__get_data(umem->mz->addr, - (uint64_t)addrs[i]); - } else { - desc->addr = (uint64_t)addrs[i]; - pkt = xsk_umem__get_data(umem->mz->addr, - desc->addr); - rte_memcpy(pkt, rte_pktmbuf_mtod(mbuf, void *), - desc->len); - } + desc->addr = (uint64_t)addrs[i]; + pkt = xsk_umem__get_data(umem->mz->addr, + desc->addr); + rte_memcpy(pkt, rte_pktmbuf_mtod(mbuf, void *), desc->len); tx_bytes += mbuf->pkt_len; + rte_pktmbuf_free(mbuf); } xsk_ring_prod__submit(&txq->tx, nb_pkts); kick_tx(txq); + pull_umem_cq(umem, ETH_AF_XDP_TX_BATCH_SIZE); +#endif - txq->stats.tx_pkts += nb_pkts; + txq->stats.tx_pkts += nb_pkts - dropped; txq->stats.tx_bytes += tx_bytes; - - for (i = 0; i < nb_pkts; i++) - rte_pktmbuf_free(bufs[i]); + txq->stats.tx_dropped += dropped; return nb_pkts; } @@ -446,6 +534,7 @@ eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats) stats->ipackets += stats->q_ipackets[i]; stats->ibytes += stats->q_ibytes[i]; stats->imissed += rxq->stats.rx_dropped; + stats->oerrors += txq->stats.tx_dropped; ret = getsockopt(xsk_socket__fd(rxq->xsk), SOL_XDP, XDP_STATISTICS, &xdp_stats, &optlen); if (ret != 0) { @@ -492,11 +581,16 @@ remove_xdp_program(struct pmd_internals *internals) static void xdp_umem_destroy(struct xsk_umem_info *umem) { +#if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) + rte_mempool_free(umem->mb_pool); + umem->mb_pool = NULL; +#else rte_memzone_free(umem->mz); umem->mz = NULL; rte_ring_free(umem->buf_ring); umem->buf_ring = NULL; +#endif rte_free(umem); umem = NULL; @@ -546,6 +640,55 @@ eth_link_update(struct rte_eth_dev *dev __rte_unused, return 0; } +#if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) +static inline uint64_t get_base_addr(struct rte_mempool *mp) +{ + struct rte_mempool_memhdr *memhdr; + + memhdr = STAILQ_FIRST(&mp->mem_list); + return (uint64_t)memhdr->addr & ~(getpagesize() - 1); +} + +static struct +xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals __rte_unused, + struct pkt_rx_queue *rxq) +{ + struct xsk_umem_info *umem; + int ret; + struct xsk_umem_config usr_config = { + .fill_size = ETH_AF_XDP_DFLT_NUM_DESCS, + .comp_size = ETH_AF_XDP_DFLT_NUM_DESCS, + .flags = XDP_UMEM_UNALIGNED_CHUNK_FLAG}; + 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; + + umem = rte_zmalloc_socket("umem", sizeof(*umem), 0, rte_socket_id()); + if (umem == NULL) { + AF_XDP_LOG(ERR, "Failed to allocate umem info"); + return NULL; + } + + umem->mb_pool = mb_pool; + base_addr = (void *)get_base_addr(mb_pool); + + ret = xsk_umem__create(&umem->umem, base_addr, + mb_pool->populated_size * usr_config.frame_size, + &umem->fq, &umem->cq, + &usr_config); + + if (ret) { + AF_XDP_LOG(ERR, "Failed to create umem"); + goto err; + } + umem->buffer = base_addr; + +#else static struct xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals, struct pkt_rx_queue *rxq) @@ -606,6 +749,7 @@ xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals, } umem->mz = mz; +#endif return umem; err: @@ -625,6 +769,7 @@ xsk_configure(struct pmd_internals *internals, struct pkt_rx_queue *rxq, rxq->umem = xdp_umem_configure(internals, rxq); if (rxq->umem == NULL) return -ENOMEM; + txq->umem = rxq->umem; cfg.rx_size = ring_size; cfg.tx_size = ring_size; @@ -669,7 +814,6 @@ eth_rx_queue_setup(struct rte_eth_dev *dev, struct rte_mempool *mb_pool) { struct pmd_internals *internals = dev->data->dev_private; - uint32_t buf_size, data_size; struct pkt_rx_queue *rxq; int ret; @@ -677,6 +821,10 @@ eth_rx_queue_setup(struct rte_eth_dev *dev, AF_XDP_LOG(INFO, "Set up rx queue, rx queue id: %d, xsk queue id: %d\n", rx_queue_id, rxq->xsk_queue_idx); + +#ifndef XDP_UMEM_UNALIGNED_CHUNK_FLAG + uint32_t buf_size, data_size; + /* Now get the space available for data in the mbuf */ buf_size = rte_pktmbuf_data_room_size(mb_pool) - RTE_PKTMBUF_HEADROOM; @@ -688,6 +836,7 @@ eth_rx_queue_setup(struct rte_eth_dev *dev, ret = -ENOMEM; goto err; } +#endif rxq->mb_pool = mb_pool; @@ -700,8 +849,6 @@ eth_rx_queue_setup(struct rte_eth_dev *dev, rxq->fds[0].fd = xsk_socket__fd(rxq->xsk); rxq->fds[0].events = POLLIN; - rxq->umem->pmd_zc = internals->pmd_zc; - dev->data->rx_queues[rx_queue_id] = rxq; return 0; @@ -877,7 +1024,7 @@ xdp_get_channels_info(const char *if_name, int *max_queues, static int parse_parameters(struct rte_kvargs *kvlist, char *if_name, int *start_queue, - int *queue_cnt, int *pmd_zc) + int *queue_cnt) { int ret; @@ -898,11 +1045,6 @@ parse_parameters(struct rte_kvargs *kvlist, char *if_name, int *start_queue, goto free_kvlist; } - ret = rte_kvargs_process(kvlist, ETH_AF_XDP_PMD_ZC_ARG, - &parse_integer_arg, pmd_zc); - if (ret < 0) - goto free_kvlist; - free_kvlist: rte_kvargs_free(kvlist); return ret; @@ -940,7 +1082,7 @@ get_iface_info(const char *if_name, static struct rte_eth_dev * init_internals(struct rte_vdev_device *dev, const char *if_name, - int start_queue_idx, int queue_cnt, int pmd_zc) + int start_queue_idx, int queue_cnt) { const char *name = rte_vdev_device_name(dev); const unsigned int numa_node = dev->device.numa_node; @@ -955,7 +1097,6 @@ init_internals(struct rte_vdev_device *dev, const char *if_name, internals->start_queue_idx = start_queue_idx; internals->queue_cnt = queue_cnt; - internals->pmd_zc = pmd_zc; strlcpy(internals->if_name, if_name, IFNAMSIZ); if (xdp_get_channels_info(if_name, &internals->max_queue_cnt, @@ -1011,8 +1152,9 @@ init_internals(struct rte_vdev_device *dev, const char *if_name, /* Let rte_eth_dev_close() release the port resources. */ eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE; - if (internals->pmd_zc) - AF_XDP_LOG(INFO, "Zero copy between umem and mbuf enabled.\n"); +#if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) + AF_XDP_LOG(INFO, "Zero copy between umem and mbuf enabled.\n"); +#endif return eth_dev; @@ -1034,7 +1176,6 @@ rte_pmd_af_xdp_probe(struct rte_vdev_device *dev) int xsk_queue_cnt = ETH_AF_XDP_DFLT_QUEUE_COUNT; struct rte_eth_dev *eth_dev = NULL; const char *name; - int pmd_zc = 0; AF_XDP_LOG(INFO, "Initializing pmd_af_xdp for %s\n", rte_vdev_device_name(dev)); @@ -1062,7 +1203,7 @@ rte_pmd_af_xdp_probe(struct rte_vdev_device *dev) dev->device.numa_node = rte_socket_id(); if (parse_parameters(kvlist, if_name, &xsk_start_queue_idx, - &xsk_queue_cnt, &pmd_zc) < 0) { + &xsk_queue_cnt) < 0) { AF_XDP_LOG(ERR, "Invalid kvargs value\n"); return -EINVAL; } @@ -1073,7 +1214,7 @@ rte_pmd_af_xdp_probe(struct rte_vdev_device *dev) } eth_dev = init_internals(dev, if_name, xsk_start_queue_idx, - xsk_queue_cnt, pmd_zc); + xsk_queue_cnt); if (eth_dev == NULL) { AF_XDP_LOG(ERR, "Failed to init internals\n"); return -1; @@ -1116,8 +1257,7 @@ RTE_PMD_REGISTER_VDEV(net_af_xdp, pmd_af_xdp_drv); RTE_PMD_REGISTER_PARAM_STRING(net_af_xdp, "iface= " "start_queue= " - "queue_count= " - "pmd_zero_copy=<0|1>"); + "queue_count="); RTE_INIT(af_xdp_init_log) {