From patchwork Sun Dec 20 21:13:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Coquelin X-Patchwork-Id: 85555 X-Patchwork-Delegate: maxime.coquelin@redhat.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 D8CDAA09FD; Sun, 20 Dec 2020 22:24:12 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id CE40FCE53; Sun, 20 Dec 2020 22:16:28 +0100 (CET) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by dpdk.org (Postfix) with ESMTP id 31404CE7B for ; Sun, 20 Dec 2020 22:16:27 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1608498985; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Y7HEod0hd5x+CMuDa+dgI0l7I1pYUB+SnHY3l5vZ8IU=; b=hDz4vJ13MOKYUdLmHwA/H9Q1foz3aZ7AaILM8TgF5yqq6jbNkDuonqVz56d7e+oYmHbd/z r0afkipQAtojLo8kPn13++NL0jtpYskUsffjRIj7n+KXHMjhOaDUloisZom5hwLjOOsyuV NnsaQVnvE0jm1DXkBLkeL0pOEmzl69U= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-275-a7a3XGMONtOvxP36TZYdcg-1; Sun, 20 Dec 2020 16:16:23 -0500 X-MC-Unique: a7a3XGMONtOvxP36TZYdcg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8C66619251A1; Sun, 20 Dec 2020 21:16:22 +0000 (UTC) Received: from max-t490s.redhat.com (unknown [10.36.110.43]) by smtp.corp.redhat.com (Postfix) with ESMTP id 13F4560C43; Sun, 20 Dec 2020 21:16:18 +0000 (UTC) From: Maxime Coquelin To: dev@dpdk.org, chenbo.xia@intel.com, olivier.matz@6wind.com, amorenoz@redhat.com, david.marchand@redhat.com Cc: Maxime Coquelin Date: Sun, 20 Dec 2020 22:13:56 +0100 Message-Id: <20201220211405.313012-32-maxime.coquelin@redhat.com> In-Reply-To: <20201220211405.313012-1-maxime.coquelin@redhat.com> References: <20201220211405.313012-1-maxime.coquelin@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=maxime.coquelin@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Subject: [dpdk-dev] [PATCH 31/40] net/virtio: add Virtio-user status ops 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 new callbacks to get and set the device status. Signed-off-by: Maxime Coquelin --- drivers/net/virtio/virtio_user/vhost.h | 2 + drivers/net/virtio/virtio_user/vhost_kernel.c | 14 ++ drivers/net/virtio/virtio_user/vhost_user.c | 121 +++++++++++++----- drivers/net/virtio/virtio_user/vhost_vdpa.c | 16 ++- .../net/virtio/virtio_user/virtio_user_dev.c | 42 ++---- 5 files changed, 129 insertions(+), 66 deletions(-) diff --git a/drivers/net/virtio/virtio_user/vhost.h b/drivers/net/virtio/virtio_user/vhost.h index 956eb58728..c85ba9a47b 100644 --- a/drivers/net/virtio/virtio_user/vhost.h +++ b/drivers/net/virtio/virtio_user/vhost.h @@ -114,6 +114,8 @@ struct virtio_user_backend_ops { int (*set_vring_call)(struct virtio_user_dev *dev, struct vhost_vring_file *file); int (*set_vring_kick)(struct virtio_user_dev *dev, struct vhost_vring_file *file); int (*set_vring_addr)(struct virtio_user_dev *dev, struct vhost_vring_addr *addr); + int (*get_status)(struct virtio_user_dev *dev, uint8_t *status); + int (*set_status)(struct virtio_user_dev *dev, uint8_t status); int (*send_request)(struct virtio_user_dev *dev, enum vhost_user_request req, void *arg); diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c b/drivers/net/virtio/virtio_user/vhost_kernel.c index 8cd86b72c6..0b74f73c97 100644 --- a/drivers/net/virtio/virtio_user/vhost_kernel.c +++ b/drivers/net/virtio/virtio_user/vhost_kernel.c @@ -316,6 +316,18 @@ vhost_kernel_set_vring_addr(struct virtio_user_dev *dev, struct vhost_vring_addr return 0; } +static int +vhost_kernel_get_status(struct virtio_user_dev *dev __rte_unused, uint8_t *status __rte_unused) +{ + return -ENOTSUP; +} + +static int +vhost_kernel_set_status(struct virtio_user_dev *dev __rte_unused, uint8_t status __rte_unused) +{ + return -ENOTSUP; +} + static uint64_t vhost_req_user_to_kernel[] = { [VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER, }; @@ -487,6 +499,8 @@ struct virtio_user_backend_ops virtio_ops_kernel = { .set_vring_call = vhost_kernel_set_vring_call, .set_vring_kick = vhost_kernel_set_vring_kick, .set_vring_addr = vhost_kernel_set_vring_addr, + .get_status = vhost_kernel_get_status, + .set_status = vhost_kernel_set_status, .send_request = vhost_kernel_send_request, .enable_qp = vhost_kernel_enable_queue_pair }; diff --git a/drivers/net/virtio/virtio_user/vhost_user.c b/drivers/net/virtio/virtio_user/vhost_user.c index 59cf366683..d426b44fe7 100644 --- a/drivers/net/virtio/virtio_user/vhost_user.c +++ b/drivers/net/virtio/virtio_user/vhost_user.c @@ -544,13 +544,100 @@ vhost_user_set_vring_addr(struct virtio_user_dev *dev, struct vhost_vring_addr * return 0; } +static int +vhost_user_get_status(struct virtio_user_dev *dev, uint8_t *status) +{ + int ret; + struct vhost_user_msg msg = { + .request = VHOST_USER_GET_STATUS, + .flags = VHOST_USER_VERSION, + }; + + /* + * If features have not been negotiated, we don't know if the backend + * supports protocol features + */ + if (!(dev->status & VIRTIO_CONFIG_STATUS_FEATURES_OK)) + return -ENOTSUP; + + /* Status protocol feature requires protocol features support */ + if (!(dev->device_features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) + return -ENOTSUP; + + if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS))) + return -ENOTSUP; + + ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0); + if (ret < 0) { + PMD_DRV_LOG(ERR, "Failed to send request"); + goto err; + } + + ret = vhost_user_read(dev->vhostfd, &msg); + if (ret < 0) { + PMD_DRV_LOG(ERR, "Failed to recv request"); + goto err; + } + + if (msg.request != VHOST_USER_GET_STATUS) { + PMD_DRV_LOG(ERR, "Unexpected request type (%d)", msg.request); + goto err; + } + + if (msg.size != sizeof(msg.payload.u64)) { + PMD_DRV_LOG(ERR, "Unexpected payload size (%d)", msg.size); + goto err; + } + + *status = (uint8_t)msg.payload.u64; + + return 0; +err: + PMD_DRV_LOG(ERR, "Failed to get device status"); + return -1; +} + +static int +vhost_user_set_status(struct virtio_user_dev *dev, uint8_t status) +{ + int ret; + struct vhost_user_msg msg = { + .request = VHOST_USER_SET_STATUS, + .flags = VHOST_USER_VERSION, + .size = sizeof(msg.payload.u64), + .payload.u64 = status, + }; + + if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK)) + msg.flags |= VHOST_USER_NEED_REPLY_MASK; + + /* + * If features have not been negotiated, we don't know if the backend + * supports protocol features + */ + if (!(dev->status & VIRTIO_CONFIG_STATUS_FEATURES_OK)) + return -ENOTSUP; + + /* Status protocol feature requires protocol features support */ + if (!(dev->device_features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) + return -ENOTSUP; + + if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_STATUS))) + return -ENOTSUP; + + ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0); + if (ret < 0) { + PMD_DRV_LOG(ERR, "Failed to send get status request"); + return -1; + } + + return vhost_user_check_reply_ack(dev, &msg); +} static struct vhost_user_msg m; const char * const vhost_msg_strings[] = { [VHOST_USER_RESET_OWNER] = "VHOST_RESET_OWNER", - [VHOST_USER_SET_STATUS] = "VHOST_SET_STATUS", - [VHOST_USER_GET_STATUS] = "VHOST_GET_STATUS", }; static int @@ -561,7 +648,6 @@ vhost_user_sock(struct virtio_user_dev *dev, struct vhost_user_msg msg; struct vhost_vring_file *file = 0; int need_reply = 0; - int has_reply_ack = 0; int fds[VHOST_MEMORY_MAX_NREGIONS]; int fd_num = 0; int vhostfd = dev->vhostfd; @@ -573,31 +659,11 @@ vhost_user_sock(struct virtio_user_dev *dev, if (dev->is_server && vhostfd < 0) return -1; - if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK)) - has_reply_ack = 1; - msg.request = req; msg.flags = VHOST_USER_VERSION; msg.size = 0; switch (req) { - case VHOST_USER_GET_STATUS: - if (!(dev->status & VIRTIO_CONFIG_STATUS_FEATURES_OK) || - (!(dev->protocol_features & - (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))) - return -ENOTSUP; - need_reply = 1; - break; - - case VHOST_USER_SET_STATUS: - if (!(dev->status & VIRTIO_CONFIG_STATUS_FEATURES_OK) || - (!(dev->protocol_features & - (1ULL << VHOST_USER_PROTOCOL_F_STATUS)))) - return -ENOTSUP; - - if (has_reply_ack) - msg.flags |= VHOST_USER_NEED_REPLY_MASK; - /* Fallthrough */ case VHOST_USER_SET_LOG_BASE: msg.payload.u64 = *((__u64 *)arg); msg.size = sizeof(m.payload.u64); @@ -644,13 +710,6 @@ vhost_user_sock(struct virtio_user_dev *dev, } switch (req) { - case VHOST_USER_GET_STATUS: - if (msg.size != sizeof(m.payload.u64)) { - PMD_DRV_LOG(ERR, "Received bad msg size"); - return -1; - } - *((__u64 *)arg) = msg.payload.u64; - break; default: /* Reply-ack handling */ if (msg.size != sizeof(m.payload.u64)) { @@ -784,6 +843,8 @@ struct virtio_user_backend_ops virtio_ops_user = { .set_vring_call = vhost_user_set_vring_call, .set_vring_kick = vhost_user_set_vring_kick, .set_vring_addr = vhost_user_set_vring_addr, + .get_status = vhost_user_get_status, + .set_status = vhost_user_set_status, .send_request = vhost_user_sock, .enable_qp = vhost_user_enable_queue_pair }; diff --git a/drivers/net/virtio/virtio_user/vhost_vdpa.c b/drivers/net/virtio/virtio_user/vhost_vdpa.c index e09e7c9fb8..f4331884c3 100644 --- a/drivers/net/virtio/virtio_user/vhost_vdpa.c +++ b/drivers/net/virtio/virtio_user/vhost_vdpa.c @@ -36,8 +36,6 @@ static uint64_t vhost_req_user_to_vdpa[] = { [VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER, - [VHOST_USER_SET_STATUS] = VHOST_VDPA_SET_STATUS, - [VHOST_USER_GET_STATUS] = VHOST_VDPA_GET_STATUS, }; /* no alignment requirement */ @@ -253,6 +251,18 @@ vhost_vdpa_set_vring_addr(struct virtio_user_dev *dev, struct vhost_vring_addr * return vhost_vdpa_ioctl(dev->vhostfd, VHOST_SET_VRING_ADDR, addr); } +static int +vhost_vdpa_get_status(struct virtio_user_dev *dev, uint8_t *status) +{ + return vhost_vdpa_ioctl(dev->vhostfd, VHOST_VDPA_GET_STATUS, status); +} + +static int +vhost_vdpa_set_status(struct virtio_user_dev *dev, uint8_t status) +{ + return vhost_vdpa_ioctl(dev->vhostfd, VHOST_VDPA_SET_STATUS, &status); +} + /* with below features, vhost vdpa does not need to do the checksum and TSO, * these info will be passed to virtio_user through virtio net header. */ @@ -363,6 +373,8 @@ struct virtio_user_backend_ops virtio_ops_vdpa = { .set_vring_call = vhost_vdpa_set_vring_call, .set_vring_kick = vhost_vdpa_set_vring_kick, .set_vring_addr = vhost_vdpa_set_vring_addr, + .get_status = vhost_vdpa_get_status, + .set_status = vhost_vdpa_set_status, .send_request = vhost_vdpa_send_request, .enable_qp = vhost_vdpa_enable_queue_pair, .dma_map = vhost_vdpa_dma_map, diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c index 48ca7a2548..e1f016aa8c 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c @@ -805,21 +805,12 @@ int virtio_user_dev_set_status(struct virtio_user_dev *dev, uint8_t status) { int ret; - uint64_t arg = status; pthread_mutex_lock(&dev->mutex); dev->status = status; - if (dev->backend_type == VIRTIO_USER_BACKEND_VHOST_USER) - ret = dev->ops->send_request(dev, - VHOST_USER_SET_STATUS, &arg); - else if (dev->backend_type == VIRTIO_USER_BACKEND_VHOST_VDPA) - ret = dev->ops->send_request(dev, - VHOST_USER_SET_STATUS, &status); - else - ret = -ENOTSUP; - + ret = dev->ops->set_status(dev, status); if (ret && ret != -ENOTSUP) { - PMD_INIT_LOG(ERR, "VHOST_USER_SET_STATUS failed (%d): %s", ret, + PMD_INIT_LOG(ERR, "Virtio-user set status failed (%d): %s", ret, strerror(errno)); } @@ -830,29 +821,13 @@ virtio_user_dev_set_status(struct virtio_user_dev *dev, uint8_t status) int virtio_user_dev_update_status(struct virtio_user_dev *dev) { - uint64_t ret; + int ret; uint8_t status; - int err; pthread_mutex_lock(&dev->mutex); - if (dev->backend_type == VIRTIO_USER_BACKEND_VHOST_USER) { - err = dev->ops->send_request(dev, VHOST_USER_GET_STATUS, &ret); - if (!err && ret > UINT8_MAX) { - PMD_INIT_LOG(ERR, "Invalid VHOST_USER_GET_STATUS " - "response 0x%" PRIx64 "\n", ret); - err = -1; - goto error; - } - status = ret; - } else if (dev->backend_type == VIRTIO_USER_BACKEND_VHOST_VDPA) { - err = dev->ops->send_request(dev, VHOST_USER_GET_STATUS, - &status); - } else { - err = -ENOTSUP; - } - - if (!err) { + ret = dev->ops->get_status(dev, &status); + if (!ret) { dev->status = status; PMD_INIT_LOG(DEBUG, "Updated Device Status(0x%08x):\n" "\t-RESET: %u\n" @@ -870,12 +845,11 @@ virtio_user_dev_update_status(struct virtio_user_dev *dev) !!(dev->status & VIRTIO_CONFIG_STATUS_FEATURES_OK), !!(dev->status & VIRTIO_CONFIG_STATUS_DEV_NEED_RESET), !!(dev->status & VIRTIO_CONFIG_STATUS_FAILED)); - } else if (err != -ENOTSUP) { - PMD_INIT_LOG(ERR, "VHOST_USER_GET_STATUS failed (%d): %s", err, + } else if (ret != -ENOTSUP) { + PMD_INIT_LOG(ERR, "Virtio-user get status failed (%d): %s", ret, strerror(errno)); } -error: pthread_mutex_unlock(&dev->mutex); - return err; + return ret; }