From patchwork Thu Jun 28 21:52:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41849 X-Patchwork-Delegate: maxime.coquelin@redhat.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 8AC441B1C3; Thu, 28 Jun 2018 16:06:51 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 37BF11DB9 for ; Thu, 28 Jun 2018 16:06:48 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850330" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:46 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:25 +0800 Message-Id: <20180628215235.106069-2-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v3 01/11] vhost: advertise support in-order feature 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" If devices always use descriptors in the same order in which they have been made available. These devices can offer the VIRTIO_F_IN_ORDER feature. If negotiated, this knowledge allows devices to notify the use of a batch of buffers to virtio driver by only writing used ring index. Vhost user device has supported this feature by default. If vhost dequeue zero is enabled, should disable VIRTIO_F_IN_ORDER as vhost can’t assure that descriptors returned from NIC are in order. Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/lib/librte_vhost/socket.c b/lib/librte_vhost/socket.c index 0399c37bc..d63031747 100644 --- a/lib/librte_vhost/socket.c +++ b/lib/librte_vhost/socket.c @@ -853,6 +853,12 @@ rte_vhost_driver_register(const char *path, uint64_t flags) vsocket->supported_features = VIRTIO_NET_SUPPORTED_FEATURES; vsocket->features = VIRTIO_NET_SUPPORTED_FEATURES; + /* Dequeue zero copy can't assure descriptors returned in order */ + if (vsocket->dequeue_zero_copy) { + vsocket->supported_features &= ~(1ULL << VIRTIO_F_IN_ORDER); + vsocket->features &= ~(1ULL << VIRTIO_F_IN_ORDER); + } + if (!(flags & RTE_VHOST_USER_IOMMU_SUPPORT)) { vsocket->supported_features &= ~(1ULL << VIRTIO_F_IOMMU_PLATFORM); vsocket->features &= ~(1ULL << VIRTIO_F_IOMMU_PLATFORM); diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h index 786a74f64..3437b996b 100644 --- a/lib/librte_vhost/vhost.h +++ b/lib/librte_vhost/vhost.h @@ -191,6 +191,13 @@ struct vhost_msg { #define VIRTIO_F_VERSION_1 32 #endif +/* + * Available and used descs are in same order + */ +#ifndef VIRTIO_F_IN_ORDER +#define VIRTIO_F_IN_ORDER 35 +#endif + /* Features supported by this builtin vhost-user net driver. */ #define VIRTIO_NET_SUPPORTED_FEATURES ((1ULL << VIRTIO_NET_F_MRG_RXBUF) | \ (1ULL << VIRTIO_F_ANY_LAYOUT) | \ @@ -214,7 +221,8 @@ struct vhost_msg { (1ULL << VIRTIO_NET_F_GUEST_ECN) | \ (1ULL << VIRTIO_RING_F_INDIRECT_DESC) | \ (1ULL << VIRTIO_RING_F_EVENT_IDX) | \ - (1ULL << VIRTIO_NET_F_MTU) | \ + (1ULL << VIRTIO_NET_F_MTU) | \ + (1ULL << VIRTIO_F_IN_ORDER) | \ (1ULL << VIRTIO_F_IOMMU_PLATFORM)) From patchwork Thu Jun 28 21:52:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41850 X-Patchwork-Delegate: maxime.coquelin@redhat.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 A263A1B39A; Thu, 28 Jun 2018 16:06:53 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 202E21DB9 for ; Thu, 28 Jun 2018 16:06:48 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:48 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850338" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:47 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:26 +0800 Message-Id: <20180628215235.106069-3-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 02/11] net/virtio: add in-order feature bit definition 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" If VIRTIO_F_IN_ORDER has been negotiated, driver will use descriptors in ring order: starting from offset 0 in the table, and wrapping around at the end of the table. Also introduce use_inorder_[rt]x flag for selection of IN_ORDER [RT]x handlers. Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/drivers/net/virtio/virtio_pci.h b/drivers/net/virtio/virtio_pci.h index a28ba8339..77f805df6 100644 --- a/drivers/net/virtio/virtio_pci.h +++ b/drivers/net/virtio/virtio_pci.h @@ -121,6 +121,12 @@ struct virtnet_ctl; #define VIRTIO_TRANSPORT_F_START 28 #define VIRTIO_TRANSPORT_F_END 34 +/* + * Inorder feature indicates that all buffers are used by the device + * in the same order in which they have been made available. + */ +#define VIRTIO_F_IN_ORDER 35 + /* The Guest publishes the used index for which it expects an interrupt * at the end of the avail ring. Host should ignore the avail->flags field. */ /* The Host publishes the avail index for which it expects a kick @@ -233,6 +239,8 @@ struct virtio_hw { uint8_t modern; uint8_t use_simple_rx; uint8_t use_simple_tx; + uint8_t use_inorder_rx; + uint8_t use_inorder_tx; uint16_t port_id; uint8_t mac_addr[ETHER_ADDR_LEN]; uint32_t notify_off_multiplier; From patchwork Thu Jun 28 21:52:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41851 X-Patchwork-Delegate: maxime.coquelin@redhat.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 69F471B3A3; Thu, 28 Jun 2018 16:06:56 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 0F9E11DB9 for ; Thu, 28 Jun 2018 16:06:49 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850349" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:48 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:27 +0800 Message-Id: <20180628215235.106069-4-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 03/11] net/virtio-user: add unsupported features mask 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 introduces unsupported features mask for virtio-user device. For virtio-user server mode, when reconnecting virtio-user will retrieve vhost device features as base and then unmask unsupported features. Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c index 4322527f2..0fe3b377d 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c @@ -384,6 +384,7 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, dev->queue_pairs = 1; /* mq disabled by default */ dev->queue_size = queue_size; dev->mac_specified = 0; + dev->unsupported_features = 0; parse_mac(dev, mac); if (*ifname) { @@ -421,8 +422,10 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, if (dev->mac_specified) dev->device_features |= (1ull << VIRTIO_NET_F_MAC); - else + else { dev->device_features &= ~(1ull << VIRTIO_NET_F_MAC); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_MAC); + } if (cq) { /* device does not really need to know anything about CQ, @@ -437,6 +440,12 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, dev->device_features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE); dev->device_features &= ~(1ull << VIRTIO_NET_F_MQ); dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VQ); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_RX); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_VLAN); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_GUEST_ANNOUNCE); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_CTRL_MAC_ADDR); } /* The backend will not report this feature, we add it explicitly */ @@ -444,6 +453,7 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, dev->device_features |= (1ull << VIRTIO_NET_F_STATUS); dev->device_features &= VIRTIO_USER_SUPPORTED_FEATURES; + dev->unsupported_features |= ~VIRTIO_USER_SUPPORTED_FEATURES; if (rte_mem_event_callback_register(VIRTIO_USER_MEM_EVENT_CLB_NAME, virtio_user_mem_event_cb, dev)) { diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.h b/drivers/net/virtio/virtio_user/virtio_user_dev.h index d2d4cb825..c23ddfcc5 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.h +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.h @@ -33,6 +33,7 @@ struct virtio_user_dev { * and will be sync with device */ uint64_t device_features; /* supported features by device */ + uint64_t unsupported_features; /* unsupported features mask */ uint8_t status; uint16_t port_id; uint8_t mac_addr[ETHER_ADDR_LEN]; diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c index 1c102ca72..416dbdcf8 100644 --- a/drivers/net/virtio/virtio_user_ethdev.c +++ b/drivers/net/virtio/virtio_user_ethdev.c @@ -30,7 +30,6 @@ virtio_user_server_reconnect(struct virtio_user_dev *dev) int ret; int flag; int connectfd; - uint64_t features = dev->device_features; struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id]; connectfd = accept(dev->listenfd, NULL, NULL); @@ -45,15 +44,8 @@ virtio_user_server_reconnect(struct virtio_user_dev *dev) return -1; } - features &= ~dev->device_features; - /* For following bits, vhost-user doesn't really need to know */ - features &= ~(1ull << VIRTIO_NET_F_MAC); - features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN); - features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR); - features &= ~(1ull << VIRTIO_NET_F_STATUS); - if (features) - PMD_INIT_LOG(ERR, "WARNING: Some features 0x%" PRIx64 " are not supported by vhost-user!", - features); + /* umask vhost-user unsupported features */ + dev->device_features &= ~(dev->unsupported_features); dev->features &= dev->device_features; From patchwork Thu Jun 28 21:52:28 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41852 X-Patchwork-Delegate: maxime.coquelin@redhat.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 40A611B3A4; Thu, 28 Jun 2018 16:07:00 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 1CC8F1DB9 for ; Thu, 28 Jun 2018 16:06:50 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850355" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:49 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:28 +0800 Message-Id: <20180628215235.106069-5-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 04/11] net/virtio-user: add mrg_rxbuf and in_order vdev parameters 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" Add parameters for configuring VIRTIO_NET_F_MRG_RXBUF and VIRTIO_F_IN_ORDER feature bits. If feature is disabled, also update corresponding unsupported feature bit. Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c index 0fe3b377d..e90257f5d 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c @@ -375,7 +375,8 @@ virtio_user_dev_setup(struct virtio_user_dev *dev) int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, - int cq, int queue_size, const char *mac, char **ifname) + int cq, int queue_size, const char *mac, char **ifname, + int mrg_rxbuf, int in_order) { pthread_mutex_init(&dev->mutex, NULL); snprintf(dev->path, PATH_MAX, "%s", path); @@ -420,6 +421,16 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, dev->device_features = VIRTIO_USER_SUPPORTED_FEATURES; } + if (!mrg_rxbuf) { + dev->device_features &= ~(1ull << VIRTIO_NET_F_MRG_RXBUF); + dev->unsupported_features |= (1ull << VIRTIO_NET_F_MRG_RXBUF); + } + + if (!in_order) { + dev->device_features &= ~(1ull << VIRTIO_F_IN_ORDER); + dev->unsupported_features |= (1ull << VIRTIO_F_IN_ORDER); + } + if (dev->mac_specified) dev->device_features |= (1ull << VIRTIO_NET_F_MAC); else { diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.h b/drivers/net/virtio/virtio_user/virtio_user_dev.h index c23ddfcc5..d6e0e137b 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.h +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.h @@ -48,7 +48,8 @@ int is_vhost_user_by_type(const char *path); int virtio_user_start_device(struct virtio_user_dev *dev); int virtio_user_stop_device(struct virtio_user_dev *dev); int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, - int cq, int queue_size, const char *mac, char **ifname); + int cq, int queue_size, const char *mac, char **ifname, + int mrg_rxbuf, int in_order); void virtio_user_dev_uninit(struct virtio_user_dev *dev); void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx); uint8_t virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs); diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c index 416dbdcf8..509c9b1b3 100644 --- a/drivers/net/virtio/virtio_user_ethdev.c +++ b/drivers/net/virtio/virtio_user_ethdev.c @@ -358,8 +358,12 @@ static const char *valid_args[] = { VIRTIO_USER_ARG_QUEUE_SIZE, #define VIRTIO_USER_ARG_INTERFACE_NAME "iface" VIRTIO_USER_ARG_INTERFACE_NAME, -#define VIRTIO_USER_ARG_SERVER_MODE "server" +#define VIRTIO_USER_ARG_SERVER_MODE "server" VIRTIO_USER_ARG_SERVER_MODE, +#define VIRTIO_USER_ARG_MRG_RXBUF "mrg_rxbuf" + VIRTIO_USER_ARG_MRG_RXBUF, +#define VIRTIO_USER_ARG_IN_ORDER "in_order" + VIRTIO_USER_ARG_IN_ORDER, NULL }; @@ -462,6 +466,8 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) uint64_t cq = VIRTIO_USER_DEF_CQ_EN; uint64_t queue_size = VIRTIO_USER_DEF_Q_SZ; uint64_t server_mode = VIRTIO_USER_DEF_SERVER_MODE; + uint64_t mrg_rxbuf = 1; + uint64_t in_order = 1; char *path = NULL; char *ifname = NULL; char *mac_addr = NULL; @@ -561,6 +567,24 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) goto end; } + if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MRG_RXBUF) == 1) { + if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MRG_RXBUF, + &get_integer_arg, &mrg_rxbuf) < 0) { + PMD_INIT_LOG(ERR, "error to parse %s", + VIRTIO_USER_ARG_MRG_RXBUF); + goto end; + } + } + + if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_IN_ORDER) == 1) { + if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_IN_ORDER, + &get_integer_arg, &in_order) < 0) { + PMD_INIT_LOG(ERR, "error to parse %s", + VIRTIO_USER_ARG_IN_ORDER); + goto end; + } + } + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { struct virtio_user_dev *vu_dev; @@ -577,7 +601,8 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev) else vu_dev->is_server = false; if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq, - queue_size, mac_addr, &ifname) < 0) { + queue_size, mac_addr, &ifname, mrg_rxbuf, + in_order) < 0) { PMD_INIT_LOG(ERR, "virtio_user_dev_init fails"); virtio_user_eth_dev_free(eth_dev); goto end; @@ -655,4 +680,6 @@ RTE_PMD_REGISTER_PARAM_STRING(net_virtio_user, "cq= " "queue_size= " "queues= " - "iface="); + "iface=" + "mrg_rxbuf=<0|1>" + "in_order=<0|1>"); From patchwork Thu Jun 28 21:52:29 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41853 X-Patchwork-Delegate: maxime.coquelin@redhat.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 5F7641B3B8; Thu, 28 Jun 2018 16:07:02 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 1D2251B1FC for ; Thu, 28 Jun 2018 16:06:51 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850362" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:50 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:29 +0800 Message-Id: <20180628215235.106069-6-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 05/11] net/virtio: free in-order descriptors before device start 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" Add new function for freeing IN_ORDER descriptors. As descriptors will be allocated and freed sequentially when IN_ORDER feature was negotiated. There will be no need to utilize chain for freed descriptors management, only index update is enough. Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c index 92fab2174..0bca29855 100644 --- a/drivers/net/virtio/virtio_rxtx.c +++ b/drivers/net/virtio/virtio_rxtx.c @@ -47,6 +47,13 @@ virtio_dev_rx_queue_done(void *rxq, uint16_t offset) return VIRTQUEUE_NUSED(vq) >= offset; } +void +vq_ring_free_inorder(struct virtqueue *vq, uint16_t desc_idx, uint16_t num) +{ + vq->vq_free_cnt += num; + vq->vq_desc_tail_idx = desc_idx & (vq->vq_nentries - 1); +} + void vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx) { diff --git a/drivers/net/virtio/virtqueue.c b/drivers/net/virtio/virtqueue.c index a7d0a9cbe..56a77cc71 100644 --- a/drivers/net/virtio/virtqueue.c +++ b/drivers/net/virtio/virtqueue.c @@ -74,6 +74,14 @@ virtqueue_rxvq_flush(struct virtqueue *vq) desc_idx = used_idx; rte_pktmbuf_free(vq->sw_ring[desc_idx]); vq->vq_free_cnt++; + } else if (hw->use_inorder_rx) { + desc_idx = (uint16_t)uep->id; + dxp = &vq->vq_descx[desc_idx]; + if (dxp->cookie != NULL) { + rte_pktmbuf_free(dxp->cookie); + dxp->cookie = NULL; + } + vq_ring_free_inorder(vq, desc_idx, 1); } else { desc_idx = (uint16_t)uep->id; dxp = &vq->vq_descx[desc_idx]; diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h index 14364f356..26518ed98 100644 --- a/drivers/net/virtio/virtqueue.h +++ b/drivers/net/virtio/virtqueue.h @@ -306,6 +306,8 @@ virtio_get_queue_type(struct virtio_hw *hw, uint16_t vtpci_queue_idx) #define VIRTQUEUE_NUSED(vq) ((uint16_t)((vq)->vq_ring.used->idx - (vq)->vq_used_cons_idx)) void vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx); +void vq_ring_free_inorder(struct virtqueue *vq, uint16_t desc_idx, + uint16_t num); static inline void vq_update_avail_idx(struct virtqueue *vq) From patchwork Thu Jun 28 21:52:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41854 X-Patchwork-Delegate: maxime.coquelin@redhat.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 115601B42A; Thu, 28 Jun 2018 16:07:04 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 296E11B293 for ; Thu, 28 Jun 2018 16:06:52 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850375" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:51 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:30 +0800 Message-Id: <20180628215235.106069-7-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 06/11] net/virtio: extract common part for in-order functions 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" IN_ORDER virtio-user Tx function support Tx checksum offloading and TSO which also support on normal Tx function. So extracts common part into separated function for reuse. Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c index 0bca29855..e9b1b496e 100644 --- a/drivers/net/virtio/virtio_rxtx.c +++ b/drivers/net/virtio/virtio_rxtx.c @@ -246,6 +246,55 @@ tx_offload_enabled(struct virtio_hw *hw) (var) = (val); \ } while (0) +static inline void +virtqueue_xmit_offload(struct virtio_net_hdr *hdr, + struct rte_mbuf *cookie, + int offload) +{ + if (offload) { + if (cookie->ol_flags & PKT_TX_TCP_SEG) + cookie->ol_flags |= PKT_TX_TCP_CKSUM; + + switch (cookie->ol_flags & PKT_TX_L4_MASK) { + case PKT_TX_UDP_CKSUM: + hdr->csum_start = cookie->l2_len + cookie->l3_len; + hdr->csum_offset = offsetof(struct udp_hdr, + dgram_cksum); + hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; + break; + + case PKT_TX_TCP_CKSUM: + hdr->csum_start = cookie->l2_len + cookie->l3_len; + hdr->csum_offset = offsetof(struct tcp_hdr, cksum); + hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; + break; + + default: + ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); + ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0); + ASSIGN_UNLESS_EQUAL(hdr->flags, 0); + break; + } + + /* TCP Segmentation Offload */ + if (cookie->ol_flags & PKT_TX_TCP_SEG) { + virtio_tso_fix_cksum(cookie); + hdr->gso_type = (cookie->ol_flags & PKT_TX_IPV6) ? + VIRTIO_NET_HDR_GSO_TCPV6 : + VIRTIO_NET_HDR_GSO_TCPV4; + hdr->gso_size = cookie->tso_segsz; + hdr->hdr_len = + cookie->l2_len + + cookie->l3_len + + cookie->l4_len; + } else { + ASSIGN_UNLESS_EQUAL(hdr->gso_type, 0); + ASSIGN_UNLESS_EQUAL(hdr->gso_size, 0); + ASSIGN_UNLESS_EQUAL(hdr->hdr_len, 0); + } + } +} + static inline void virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, uint16_t needed, int use_indirect, int can_push) @@ -315,49 +364,7 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, idx = start_dp[idx].next; } - /* Checksum Offload / TSO */ - if (offload) { - if (cookie->ol_flags & PKT_TX_TCP_SEG) - cookie->ol_flags |= PKT_TX_TCP_CKSUM; - - switch (cookie->ol_flags & PKT_TX_L4_MASK) { - case PKT_TX_UDP_CKSUM: - hdr->csum_start = cookie->l2_len + cookie->l3_len; - hdr->csum_offset = offsetof(struct udp_hdr, - dgram_cksum); - hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - break; - - case PKT_TX_TCP_CKSUM: - hdr->csum_start = cookie->l2_len + cookie->l3_len; - hdr->csum_offset = offsetof(struct tcp_hdr, cksum); - hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - break; - - default: - ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); - ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0); - ASSIGN_UNLESS_EQUAL(hdr->flags, 0); - break; - } - - /* TCP Segmentation Offload */ - if (cookie->ol_flags & PKT_TX_TCP_SEG) { - virtio_tso_fix_cksum(cookie); - hdr->gso_type = (cookie->ol_flags & PKT_TX_IPV6) ? - VIRTIO_NET_HDR_GSO_TCPV6 : - VIRTIO_NET_HDR_GSO_TCPV4; - hdr->gso_size = cookie->tso_segsz; - hdr->hdr_len = - cookie->l2_len + - cookie->l3_len + - cookie->l4_len; - } else { - ASSIGN_UNLESS_EQUAL(hdr->gso_type, 0); - ASSIGN_UNLESS_EQUAL(hdr->gso_size, 0); - ASSIGN_UNLESS_EQUAL(hdr->hdr_len, 0); - } - } + virtqueue_xmit_offload(hdr, cookie, offload); do { start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq); @@ -621,6 +628,15 @@ virtio_update_packet_stats(struct virtnet_stats *stats, struct rte_mbuf *mbuf) } } +static inline void +virtio_rx_stats_updated(struct virtnet_rx *rxvq, struct rte_mbuf *m) +{ + VIRTIO_DUMP_PACKET(m, m->data_len); + + rxvq->stats.bytes += m->pkt_len; + virtio_update_packet_stats(&rxvq->stats, m); +} + /* Optionally fill offload information in structure */ static int virtio_rx_offload(struct rte_mbuf *m, struct virtio_net_hdr *hdr) @@ -773,12 +789,9 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) continue; } - VIRTIO_DUMP_PACKET(rxm, rxm->data_len); + virtio_rx_stats_updated(rxvq, rxm); rx_pkts[nb_rx++] = rxm; - - rxvq->stats.bytes += rxm->pkt_len; - virtio_update_packet_stats(&rxvq->stats, rxm); } rxvq->stats.packets += nb_rx; From patchwork Thu Jun 28 21:52:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41855 X-Patchwork-Delegate: maxime.coquelin@redhat.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 255DB1B434; Thu, 28 Jun 2018 16:07:06 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 4FDA158EC for ; Thu, 28 Jun 2018 16:06:55 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850381" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:53 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:31 +0800 Message-Id: <20180628215235.106069-8-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 07/11] net/virtio: support in-order Rx and Tx 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" IN_ORDER Rx function depends on merge-able feature. Descriptors allocation and free will be done in bulk. Virtio dequeue logic: dequeue_burst_rx(burst mbufs) for (each mbuf b) { if (b need merge) { merge remained mbufs add merged mbuf to return mbufs list } else { add mbuf to return mbufs list } } if (last mbuf c need merge) { dequeue_burst_rx(required mbufs) merge last mbuf c } refill_avail_ring_bulk() update_avail_ring() return mbufs list IN_ORDER Tx function can support offloading features. Packets which matched "can_push" option will be handled by simple xmit function. Those packets can't match "can_push" will be handled by original xmit function with in-order flag. Virtio enqueue logic: xmit_cleanup(used descs) for (each xmit mbuf b) { if (b can inorder xmit) { add mbuf b to inorder burst list continue } else { xmit inorder burst list xmit mbuf b by original function } } if (inorder burst list not empty) { xmit inorder burst list } update_avail_ring() Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/drivers/net/virtio/virtio_ethdev.h b/drivers/net/virtio/virtio_ethdev.h index bb40064ea..8ab1267b0 100644 --- a/drivers/net/virtio/virtio_ethdev.h +++ b/drivers/net/virtio/virtio_ethdev.h @@ -83,9 +83,15 @@ uint16_t virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t virtio_recv_mergeable_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); +uint16_t virtio_recv_mergeable_pkts_inorder(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts); + uint16_t virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); +uint16_t virtio_xmit_pkts_inorder(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts); + uint16_t virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c index e9b1b496e..0296b5a2f 100644 --- a/drivers/net/virtio/virtio_rxtx.c +++ b/drivers/net/virtio/virtio_rxtx.c @@ -122,6 +122,44 @@ virtqueue_dequeue_burst_rx(struct virtqueue *vq, struct rte_mbuf **rx_pkts, return i; } +static uint16_t +virtqueue_dequeue_rx_inorder(struct virtqueue *vq, + struct rte_mbuf **rx_pkts, + uint32_t *len, + uint16_t num) +{ + struct vring_used_elem *uep; + struct rte_mbuf *cookie; + uint16_t used_idx = 0; + uint16_t i; + + if (unlikely(num == 0)) + return 0; + + for (i = 0; i < num; i++) { + used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1); + /* Desc idx same as used idx */ + uep = &vq->vq_ring.used->ring[used_idx]; + len[i] = uep->len; + cookie = (struct rte_mbuf *)vq->vq_descx[used_idx].cookie; + + if (unlikely(cookie == NULL)) { + PMD_DRV_LOG(ERR, "vring descriptor with no mbuf cookie at %u", + vq->vq_used_cons_idx); + break; + } + + rte_prefetch0(cookie); + rte_packet_prefetch(rte_pktmbuf_mtod(cookie, void *)); + rx_pkts[i] = cookie; + vq->vq_used_cons_idx++; + vq->vq_descx[used_idx].cookie = NULL; + } + + vq_ring_free_inorder(vq, used_idx, i); + return i; +} + #ifndef DEFAULT_TX_FREE_THRESH #define DEFAULT_TX_FREE_THRESH 32 #endif @@ -150,6 +188,83 @@ virtio_xmit_cleanup(struct virtqueue *vq, uint16_t num) } } +/* Cleanup from completed inorder transmits. */ +static void +virtio_xmit_cleanup_inorder(struct virtqueue *vq, uint16_t num) +{ + uint16_t i, used_idx, desc_idx, last_idx; + int16_t free_cnt = 0; + struct vq_desc_extra *dxp = NULL; + + if (unlikely(num == 0)) + return; + + for (i = 0; i < num; i++) { + struct vring_used_elem *uep; + + used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1); + uep = &vq->vq_ring.used->ring[used_idx]; + desc_idx = (uint16_t)uep->id; + + dxp = &vq->vq_descx[desc_idx]; + vq->vq_used_cons_idx++; + + if (dxp->cookie != NULL) { + rte_pktmbuf_free(dxp->cookie); + dxp->cookie = NULL; + } + } + + last_idx = desc_idx + dxp->ndescs - 1; + free_cnt = last_idx - vq->vq_desc_tail_idx; + if (free_cnt <= 0) + free_cnt += vq->vq_nentries; + + vq_ring_free_inorder(vq, last_idx, free_cnt); +} + +static inline int +virtqueue_enqueue_recv_refill_inorder(struct virtqueue *vq, + struct rte_mbuf **cookies, + uint16_t num) +{ + struct vq_desc_extra *dxp; + struct virtio_hw *hw = vq->hw; + struct vring_desc *start_dp; + uint16_t head_idx, idx, i = 0; + + if (unlikely(vq->vq_free_cnt == 0)) + return -ENOSPC; + if (unlikely(vq->vq_free_cnt < num)) + return -EMSGSIZE; + + head_idx = vq->vq_desc_head_idx & (vq->vq_nentries - 1); + start_dp = vq->vq_ring.desc; + + while (i < num) { + idx = head_idx & (vq->vq_nentries - 1); + dxp = &vq->vq_descx[idx]; + dxp->cookie = (void *)cookies[i]; + dxp->ndescs = 1; + + start_dp[idx].addr = + VIRTIO_MBUF_ADDR(cookies[i], vq) + + RTE_PKTMBUF_HEADROOM - hw->vtnet_hdr_size; + start_dp[idx].len = + cookies[i]->buf_len - + RTE_PKTMBUF_HEADROOM + + hw->vtnet_hdr_size; + start_dp[idx].flags = VRING_DESC_F_WRITE; + + vq_update_avail_ring(vq, idx); + head_idx++; + i++; + } + + vq->vq_desc_head_idx += num; + vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num); + return 0; +} static inline int virtqueue_enqueue_recv_refill(struct virtqueue *vq, struct rte_mbuf *cookie) @@ -295,9 +410,65 @@ virtqueue_xmit_offload(struct virtio_net_hdr *hdr, } } +static inline void +virtqueue_enqueue_xmit_inorder(struct virtnet_tx *txvq, + struct rte_mbuf **cookies, + uint16_t num) +{ + struct vq_desc_extra *dxp; + struct virtqueue *vq = txvq->vq; + struct vring_desc *start_dp; + struct virtio_net_hdr *hdr; + uint16_t idx; + uint16_t head_size = vq->hw->vtnet_hdr_size; + int offload; + uint16_t i = 0; + + idx = vq->vq_desc_head_idx; + start_dp = vq->vq_ring.desc; + + offload = tx_offload_enabled(vq->hw); + + while (i < num) { + idx = idx & (vq->vq_nentries - 1); + dxp = &vq->vq_descx[idx]; + dxp->cookie = (void *)cookies[i]; + dxp->ndescs = 1; + + hdr = (struct virtio_net_hdr *) + rte_pktmbuf_prepend(cookies[i], head_size); + cookies[i]->pkt_len -= head_size; + + /* if offload disabled, it is not zeroed below, do it now */ + if (offload == 0) { + ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); + ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0); + ASSIGN_UNLESS_EQUAL(hdr->flags, 0); + ASSIGN_UNLESS_EQUAL(hdr->gso_type, 0); + ASSIGN_UNLESS_EQUAL(hdr->gso_size, 0); + ASSIGN_UNLESS_EQUAL(hdr->hdr_len, 0); + } + + virtqueue_xmit_offload(hdr, cookies[i], offload); + + start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookies[i], vq); + start_dp[idx].len = cookies[i]->data_len; + start_dp[idx].flags = 0; + + vq_update_avail_ring(vq, idx); + + idx++; + i++; + }; + + vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - num); + vq->vq_desc_head_idx = idx & (vq->vq_nentries - 1); +} + static inline void virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, - uint16_t needed, int use_indirect, int can_push) + uint16_t needed, int use_indirect, int can_push, + int in_order) { struct virtio_tx_region *txr = txvq->virtio_net_hdr_mz->addr; struct vq_desc_extra *dxp; @@ -310,6 +481,7 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, int offload; offload = tx_offload_enabled(vq->hw); + head_idx = vq->vq_desc_head_idx; idx = head_idx; dxp = &vq->vq_descx[idx]; @@ -326,6 +498,7 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, * which is wrong. Below subtract restores correct pkt size. */ cookie->pkt_len -= head_size; + /* if offload disabled, it is not zeroed below, do it now */ if (offload == 0) { ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0); @@ -376,11 +549,15 @@ virtqueue_enqueue_xmit(struct virtnet_tx *txvq, struct rte_mbuf *cookie, if (use_indirect) idx = vq->vq_ring.desc[head_idx].next; - vq->vq_desc_head_idx = idx; - if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END) - vq->vq_desc_tail_idx = idx; vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - needed); + + vq->vq_desc_head_idx = idx; vq_update_avail_ring(vq, head_idx); + + if (!in_order) { + if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END) + vq->vq_desc_tail_idx = idx; + } } void @@ -435,7 +612,7 @@ virtio_dev_rx_queue_setup_finish(struct rte_eth_dev *dev, uint16_t queue_idx) struct virtnet_rx *rxvq = &vq->rxq; struct rte_mbuf *m; uint16_t desc_idx; - int error, nbufs; + int error, nbufs, i; PMD_INIT_FUNC_TRACE(); @@ -465,6 +642,24 @@ virtio_dev_rx_queue_setup_finish(struct rte_eth_dev *dev, uint16_t queue_idx) virtio_rxq_rearm_vec(rxvq); nbufs += RTE_VIRTIO_VPMD_RX_REARM_THRESH; } + } else if (hw->use_inorder_rx) { + if ((!virtqueue_full(vq))) { + uint16_t free_cnt = vq->vq_free_cnt; + struct rte_mbuf *pkts[free_cnt]; + + if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, pkts, free_cnt)) { + error = virtqueue_enqueue_recv_refill_inorder(vq, + pkts, + free_cnt); + if (unlikely(error)) { + for (i = 0; i < free_cnt; i++) + rte_pktmbuf_free(pkts[i]); + } + } + + nbufs += free_cnt; + vq_update_avail_idx(vq); + } } else { while (!virtqueue_full(vq)) { m = rte_mbuf_raw_alloc(rxvq->mpool); @@ -574,6 +769,8 @@ virtio_dev_tx_queue_setup_finish(struct rte_eth_dev *dev, for (desc_idx = mid_idx; desc_idx < vq->vq_nentries; desc_idx++) vq->vq_ring.avail->ring[desc_idx] = desc_idx; + } else if (hw->use_inorder_tx) { + vq->vq_ring.desc[vq->vq_nentries - 1].next = 0; } VIRTQUEUE_DUMP(vq); @@ -590,6 +787,19 @@ virtio_discard_rxbuf(struct virtqueue *vq, struct rte_mbuf *m) * successful since it was just dequeued. */ error = virtqueue_enqueue_recv_refill(vq, m); + + if (unlikely(error)) { + RTE_LOG(ERR, PMD, "cannot requeue discarded mbuf"); + rte_pktmbuf_free(m); + } +} + +static void +virtio_discard_rxbuf_inorder(struct virtqueue *vq, struct rte_mbuf *m) +{ + int error; + + error = virtqueue_enqueue_recv_refill_inorder(vq, &m, 1); if (unlikely(error)) { RTE_LOG(ERR, PMD, "cannot requeue discarded mbuf"); rte_pktmbuf_free(m); @@ -826,6 +1036,191 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) return nb_rx; } +uint16_t +virtio_recv_mergeable_pkts_inorder(void *rx_queue, + struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + struct virtnet_rx *rxvq = rx_queue; + struct virtqueue *vq = rxvq->vq; + struct virtio_hw *hw = vq->hw; + struct rte_mbuf *rxm; + struct rte_mbuf *prev; + uint16_t nb_used, num, nb_rx; + uint32_t len[VIRTIO_MBUF_BURST_SZ]; + struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ]; + int error; + uint32_t nb_enqueued; + uint32_t seg_num; + uint32_t seg_res; + uint32_t hdr_size; + int32_t i; + int offload; + + nb_rx = 0; + if (unlikely(hw->started == 0)) + return nb_rx; + + nb_used = VIRTQUEUE_NUSED(vq); + nb_used = RTE_MIN(nb_used, nb_pkts); + nb_used = RTE_MIN(nb_used, VIRTIO_MBUF_BURST_SZ); + + virtio_rmb(); + + PMD_RX_LOG(DEBUG, "used:%d", nb_used); + + nb_enqueued = 0; + seg_num = 1; + seg_res = 0; + hdr_size = hw->vtnet_hdr_size; + offload = rx_offload_enabled(hw); + + num = virtqueue_dequeue_rx_inorder(vq, rcv_pkts, len, nb_used); + + for (i = 0; i < num; i++) { + struct virtio_net_hdr_mrg_rxbuf *header; + + PMD_RX_LOG(DEBUG, "dequeue:%d", num); + PMD_RX_LOG(DEBUG, "packet len:%d", len[i]); + + rxm = rcv_pkts[i]; + + if (unlikely(len[i] < hdr_size + ETHER_HDR_LEN)) { + PMD_RX_LOG(ERR, "Packet drop"); + nb_enqueued++; + virtio_discard_rxbuf_inorder(vq, rxm); + rxvq->stats.errors++; + continue; + } + + header = (struct virtio_net_hdr_mrg_rxbuf *)((char *)rxm->buf_addr + + RTE_PKTMBUF_HEADROOM - hdr_size); + seg_num = header->num_buffers; + + if (seg_num == 0) + seg_num = 1; + + rxm->data_off = RTE_PKTMBUF_HEADROOM; + rxm->nb_segs = seg_num; + rxm->ol_flags = 0; + rxm->vlan_tci = 0; + rxm->pkt_len = (uint32_t)(len[i] - hdr_size); + rxm->data_len = (uint16_t)(len[i] - hdr_size); + + rxm->port = rxvq->port_id; + + rx_pkts[nb_rx] = rxm; + prev = rxm; + + if (offload && virtio_rx_offload(rxm, &header->hdr) < 0) { + virtio_discard_rxbuf_inorder(vq, rxm); + rxvq->stats.errors++; + continue; + } + + if (hw->vlan_strip) + rte_vlan_strip(rx_pkts[nb_rx]); + + seg_res = seg_num - 1; + + /* Merge remaining segments */ + while (seg_res != 0 && i < (num - 1)) { + i++; + + rxm = rcv_pkts[i]; + rxm->data_off = RTE_PKTMBUF_HEADROOM - hdr_size; + rxm->pkt_len = (uint32_t)(len[i]); + rxm->data_len = (uint16_t)(len[i]); + + rx_pkts[nb_rx]->pkt_len += (uint32_t)(len[i]); + rx_pkts[nb_rx]->data_len += (uint16_t)(len[i]); + + if (prev) + prev->next = rxm; + + prev = rxm; + seg_res -= 1; + } + + if (!seg_res) { + virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]); + nb_rx++; + } + } + + /* Last packet still need merge segments */ + while (seg_res != 0) { + uint16_t rcv_cnt = RTE_MIN((uint16_t)seg_res, + VIRTIO_MBUF_BURST_SZ); + + prev = rcv_pkts[nb_rx]; + if (likely(VIRTQUEUE_NUSED(vq) >= rcv_cnt)) { + num = virtqueue_dequeue_rx_inorder(vq, rcv_pkts, len, + rcv_cnt); + uint16_t extra_idx = 0; + + rcv_cnt = num; + while (extra_idx < rcv_cnt) { + rxm = rcv_pkts[extra_idx]; + rxm->data_off = RTE_PKTMBUF_HEADROOM - hdr_size; + rxm->pkt_len = (uint32_t)(len[extra_idx]); + rxm->data_len = (uint16_t)(len[extra_idx]); + prev->next = rxm; + prev = rxm; + rx_pkts[nb_rx]->pkt_len += len[extra_idx]; + rx_pkts[nb_rx]->data_len += len[extra_idx]; + extra_idx += 1; + }; + seg_res -= rcv_cnt; + + if (!seg_res) { + virtio_rx_stats_updated(rxvq, rx_pkts[nb_rx]); + nb_rx++; + } + } else { + PMD_RX_LOG(ERR, + "No enough segments for packet."); + virtio_discard_rxbuf_inorder(vq, prev); + rxvq->stats.errors++; + break; + } + } + + rxvq->stats.packets += nb_rx; + + /* Allocate new mbuf for the used descriptor */ + + if (likely(!virtqueue_full(vq))) { + /* free_cnt may include mrg descs */ + uint16_t free_cnt = vq->vq_free_cnt; + struct rte_mbuf *new_pkts[free_cnt]; + + if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts, free_cnt)) { + error = virtqueue_enqueue_recv_refill_inorder(vq, new_pkts, + free_cnt); + if (unlikely(error)) { + for (i = 0; i < free_cnt; i++) + rte_pktmbuf_free(new_pkts[i]); + } + nb_enqueued += free_cnt; + } else { + struct rte_eth_dev *dev = &rte_eth_devices[rxvq->port_id]; + dev->data->rx_mbuf_alloc_failed += free_cnt; + } + } + + if (likely(nb_enqueued)) { + vq_update_avail_idx(vq); + + if (unlikely(virtqueue_kick_prepare(vq))) { + virtqueue_notify(vq); + PMD_RX_LOG(DEBUG, "Notified"); + } + } + + return nb_rx; +} + uint16_t virtio_recv_mergeable_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, @@ -1073,12 +1468,124 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) } /* Enqueue Packet buffers */ - virtqueue_enqueue_xmit(txvq, txm, slots, use_indirect, can_push); + virtqueue_enqueue_xmit(txvq, txm, slots, use_indirect, + can_push, 0); + + txvq->stats.bytes += txm->pkt_len; + virtio_update_packet_stats(&txvq->stats, txm); + } + + txvq->stats.packets += nb_tx; + + if (likely(nb_tx)) { + vq_update_avail_idx(vq); + + if (unlikely(virtqueue_kick_prepare(vq))) { + virtqueue_notify(vq); + PMD_TX_LOG(DEBUG, "Notified backend after xmit"); + } + } + + return nb_tx; +} + +uint16_t +virtio_xmit_pkts_inorder(void *tx_queue, + struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + struct virtnet_tx *txvq = tx_queue; + struct virtqueue *vq = txvq->vq; + struct virtio_hw *hw = vq->hw; + uint16_t hdr_size = hw->vtnet_hdr_size; + uint16_t nb_used, nb_avail, nb_tx = 0, nb_inorder_pkts = 0; + struct rte_mbuf *inorder_pkts[nb_pkts]; + int error; + + if (unlikely(hw->started == 0 && tx_pkts != hw->inject_pkts)) + return nb_tx; + + if (unlikely(nb_pkts < 1)) + return nb_pkts; + + VIRTQUEUE_DUMP(vq); + PMD_TX_LOG(DEBUG, "%d packets to xmit", nb_pkts); + nb_used = VIRTQUEUE_NUSED(vq); + + virtio_rmb(); + if (likely(nb_used > vq->vq_nentries - vq->vq_free_thresh)) + virtio_xmit_cleanup_inorder(vq, nb_used); + + if (unlikely(!vq->vq_free_cnt)) + virtio_xmit_cleanup_inorder(vq, nb_used); + + nb_avail = RTE_MIN(vq->vq_free_cnt, nb_pkts); + + for (nb_tx = 0; nb_tx < nb_avail; nb_tx++) { + struct rte_mbuf *txm = tx_pkts[nb_tx]; + int slots, need; + + /* Do VLAN tag insertion */ + if (unlikely(txm->ol_flags & PKT_TX_VLAN_PKT)) { + error = rte_vlan_insert(&txm); + if (unlikely(error)) { + rte_pktmbuf_free(txm); + continue; + } + } + + /* optimize ring usage */ + if ((vtpci_with_feature(hw, VIRTIO_F_ANY_LAYOUT) || + vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) && + rte_mbuf_refcnt_read(txm) == 1 && + RTE_MBUF_DIRECT(txm) && + txm->nb_segs == 1 && + rte_pktmbuf_headroom(txm) >= hdr_size && + rte_is_aligned(rte_pktmbuf_mtod(txm, char *), + __alignof__(struct virtio_net_hdr_mrg_rxbuf))) { + inorder_pkts[nb_inorder_pkts] = txm; + nb_inorder_pkts++; + + txvq->stats.bytes += txm->pkt_len; + virtio_update_packet_stats(&txvq->stats, txm); + continue; + } + + if (nb_inorder_pkts) { + virtqueue_enqueue_xmit_inorder(txvq, inorder_pkts, + nb_inorder_pkts); + nb_inorder_pkts = 0; + } + + slots = txm->nb_segs + 1; + need = slots - vq->vq_free_cnt; + if (unlikely(need > 0)) { + nb_used = VIRTQUEUE_NUSED(vq); + virtio_rmb(); + need = RTE_MIN(need, (int)nb_used); + + virtio_xmit_cleanup_inorder(vq, need); + + need = slots - vq->vq_free_cnt; + + if (unlikely(need > 0)) { + PMD_TX_LOG(ERR, + "No free tx descriptors to transmit"); + break; + } + } + /* Enqueue Packet buffers */ + virtqueue_enqueue_xmit(txvq, txm, slots, 0, 0, 1); txvq->stats.bytes += txm->pkt_len; virtio_update_packet_stats(&txvq->stats, txm); } + /* Transmit all inorder packets */ + if (nb_inorder_pkts) + virtqueue_enqueue_xmit_inorder(txvq, inorder_pkts, + nb_inorder_pkts); + txvq->stats.packets += nb_tx; if (likely(nb_tx)) { @@ -1090,5 +1597,7 @@ virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) } } + VIRTQUEUE_DUMP(vq); + return nb_tx; } From patchwork Thu Jun 28 21:52:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41856 X-Patchwork-Delegate: maxime.coquelin@redhat.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 3F88E1B43E; Thu, 28 Jun 2018 16:07:08 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 80FBF1B3A5 for ; Thu, 28 Jun 2018 16:06:56 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850388" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:54 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:32 +0800 Message-Id: <20180628215235.106069-9-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 08/11] net/virtio: add in-order Rx/Tx into selection 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" After IN_ORDER Rx/Tx paths added, need to update Rx/Tx path selection logic. Rx path select logic: If IN_ORDER is disabled will select normal Rx path. If IN_ORDER is enabled, Rx offload and merge-able are disabled will select simple Rx path. Otherwise will select IN_ORDER Rx path. Tx path select logic: If IN_ORDER is disabled will select normal Tx path. If IN_ORDER is enabled and merge-able is disabled will select simple Tx path. Otherwise will select IN_ORDER Tx path. Signed-off-by: Marvin Liu diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c index df50a571a..2b3d65f80 100644 --- a/drivers/net/virtio/virtio_ethdev.c +++ b/drivers/net/virtio/virtio_ethdev.c @@ -1320,6 +1320,11 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev) PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u", eth_dev->data->port_id); eth_dev->rx_pkt_burst = virtio_recv_pkts_vec; + } else if (hw->use_inorder_rx) { + PMD_INIT_LOG(INFO, + "virtio: using inorder mergeable buffer Rx path on port %u", + eth_dev->data->port_id); + eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts_inorder; } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { PMD_INIT_LOG(INFO, "virtio: using mergeable buffer Rx path on port %u", @@ -1335,6 +1340,10 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev) PMD_INIT_LOG(INFO, "virtio: using simple Tx path on port %u", eth_dev->data->port_id); eth_dev->tx_pkt_burst = virtio_xmit_pkts_simple; + } else if (hw->use_inorder_tx) { + PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u", + eth_dev->data->port_id); + eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder; } else { PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u", eth_dev->data->port_id); @@ -1871,24 +1880,24 @@ virtio_dev_configure(struct rte_eth_dev *dev) rte_spinlock_init(&hw->state_lock); - hw->use_simple_rx = 1; - hw->use_simple_tx = 1; - #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) { hw->use_simple_rx = 0; hw->use_simple_tx = 0; } #endif - if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { - hw->use_simple_rx = 0; - hw->use_simple_tx = 0; + if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) { + if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) { + hw->use_inorder_rx = 1; + hw->use_inorder_tx = 1; + } else { + hw->use_simple_tx = 1; + if (!(rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | + DEV_RX_OFFLOAD_TCP_CKSUM))) + hw->use_simple_rx = 1; + } } - if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | - DEV_RX_OFFLOAD_TCP_CKSUM)) - hw->use_simple_rx = 0; - return 0; } From patchwork Thu Jun 28 21:52:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41857 X-Patchwork-Delegate: maxime.coquelin@redhat.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 683221B448; Thu, 28 Jun 2018 16:07:10 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id F22051B3A9 for ; Thu, 28 Jun 2018 16:06:56 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850395" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:55 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:33 +0800 Message-Id: <20180628215235.106069-10-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 09/11] net/virtio: advertise support in-order feature 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" Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/drivers/net/virtio/virtio_ethdev.h b/drivers/net/virtio/virtio_ethdev.h index 8ab1267b0..69da18d9c 100644 --- a/drivers/net/virtio/virtio_ethdev.h +++ b/drivers/net/virtio/virtio_ethdev.h @@ -36,6 +36,7 @@ 1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE | \ 1u << VIRTIO_RING_F_INDIRECT_DESC | \ 1ULL << VIRTIO_F_VERSION_1 | \ + 1ULL << VIRTIO_F_IN_ORDER | \ 1ULL << VIRTIO_F_IOMMU_PLATFORM) #define VIRTIO_PMD_SUPPORTED_GUEST_FEATURES \ diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c index e90257f5d..1050aed05 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c @@ -371,6 +371,7 @@ virtio_user_dev_setup(struct virtio_user_dev *dev) 1ULL << VIRTIO_NET_F_GUEST_CSUM | \ 1ULL << VIRTIO_NET_F_GUEST_TSO4 | \ 1ULL << VIRTIO_NET_F_GUEST_TSO6 | \ + 1ULL << VIRTIO_F_IN_ORDER | \ 1ULL << VIRTIO_F_VERSION_1) int From patchwork Thu Jun 28 21:52:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41858 X-Patchwork-Delegate: maxime.coquelin@redhat.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 E71301B453; Thu, 28 Jun 2018 16:07:12 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 33B9C58EC for ; Thu, 28 Jun 2018 16:06:57 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850402" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:56 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:34 +0800 Message-Id: <20180628215235.106069-11-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 10/11] doc: add mrg_rxbuf and in_order parameters for virtio device 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" Virtio vdev parameter mrg_rxbuf and in_order can configure VIRTIO_NET_F_MRG_RXBUF and VIRTIO_F_IN_ORDER feature bits. These feature bits can effect [RT]x path selection. Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/doc/guides/nics/virtio.rst b/doc/guides/nics/virtio.rst index a42d1bb30..46e292c4d 100644 --- a/doc/guides/nics/virtio.rst +++ b/doc/guides/nics/virtio.rst @@ -331,3 +331,13 @@ The user can specify below argument in devargs. driver, and works as a HW vhost backend. This argument is used to specify a virtio device needs to work in vDPA mode. (Default: 0 (disabled)) + +#. ``mrg_rxbuf``: + + It is used to enable virtio device mergeable Rx buffer feature. + (Default: 1 (enabled)) + +#. ``in_order``: + + It is used to enable virtio device in-order feature. + (Default: 1 (enabled)) From patchwork Thu Jun 28 21:52:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marvin Liu X-Patchwork-Id: 41859 X-Patchwork-Delegate: maxime.coquelin@redhat.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 154301B459; Thu, 28 Jun 2018 16:07:15 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id B196B1B3A2 for ; Thu, 28 Jun 2018 16:06:58 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Jun 2018 07:06:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,283,1526367600"; d="scan'208";a="60850415" Received: from dpdk-test32.sh.intel.com ([10.67.119.193]) by FMSMGA003.fm.intel.com with ESMTP; 28 Jun 2018 07:06:57 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com Cc: zhihong.wang@intel.com, dev@dpdk.org, Marvin Liu Date: Fri, 29 Jun 2018 05:52:35 +0800 Message-Id: <20180628215235.106069-12-yong.liu@intel.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180628215235.106069-1-yong.liu@intel.com> References: <20180628215235.106069-1-yong.liu@intel.com> Subject: [dpdk-dev] [PATCH v3 11/11] doc: add in-order funciton for virtio device 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" Signed-off-by: Marvin Liu Reviewed-by: Maxime Coquelin diff --git a/doc/guides/nics/virtio.rst b/doc/guides/nics/virtio.rst index 46e292c4d..1b88cec96 100644 --- a/doc/guides/nics/virtio.rst +++ b/doc/guides/nics/virtio.rst @@ -201,7 +201,7 @@ The packet transmission flow is: Virtio PMD Rx/Tx Callbacks -------------------------- -Virtio driver has 3 Rx callbacks and 2 Tx callbacks. +Virtio driver has 4 Rx callbacks and 3 Tx callbacks. Rx callbacks: @@ -215,6 +215,9 @@ Rx callbacks: Vector version without mergeable Rx buffer support, also fixes the available ring indexes and uses vector instructions to optimize performance. +#. ``virtio_recv_mergeable_pkts_inorder``: + In-order version with mergeable Rx buffer support. + Tx callbacks: #. ``virtio_xmit_pkts``: @@ -223,13 +226,17 @@ Tx callbacks: #. ``virtio_xmit_pkts_simple``: Vector version fixes the available ring indexes to optimize performance. +#. ``virtio_xmit_pkts_inorder``: + In-order version. -By default, the non-vector callbacks are used: +By default, the in-order callbacks are used: * For Rx: If mergeable Rx buffers is disabled then ``virtio_recv_pkts`` is - used; otherwise ``virtio_recv_mergeable_pkts``. + used; If in-order is enabled then ``virtio_recv_mergeable_pkts_inirder``; + otherwise ``virtio_recv_mergeable_pkts``. -* For Tx: ``virtio_xmit_pkts``. +* For Tx: If in-order is enabled then ``virtio_xmit_pkts_inorder``; + otherwise ``virtio_xmit_pkts``. Vector callbacks will be used when: @@ -242,6 +249,8 @@ Vector callbacks will be used when: * Mergeable Rx buffers is disabled. +* In-order is enabled + The corresponding callbacks are: * For Rx: ``virtio_recv_pkts_vec``.