From 06856cabb89b0db000a065c17e32cdf2d2f58470 Mon Sep 17 00:00:00 2001 From: Maxime Coquelin Date: Tue, 26 Jan 2021 11:16:21 +0100 Subject: [PATCH] net/virtio: add virtio-user ops to set owner This patch implements a dedicated callback for sending owner request. All the requests will be converted that way so that backends other than Vhost-user don't have to work around being it. Signed-off-by: Maxime Coquelin Reviewed-by: Chenbo Xia --- drivers/net/virtio/virtio_user/vhost.h | 1 + drivers/net/virtio/virtio_user/vhost_kernel.c | 28 +++++++++++++++-- drivers/net/virtio/virtio_user/vhost_user.c | 21 +++++++++++-- drivers/net/virtio/virtio_user/vhost_vdpa.c | 30 ++++++++++++++++--- .../net/virtio/virtio_user/virtio_user_dev.c | 3 +- 5 files changed, 72 insertions(+), 11 deletions(-) diff --git a/drivers/net/virtio/virtio_user/vhost.h b/drivers/net/virtio/virtio_user/vhost.h index 8ec3a6a62c..5413ec6778 100644 --- a/drivers/net/virtio/virtio_user/vhost.h +++ b/drivers/net/virtio/virtio_user/vhost.h @@ -109,6 +109,7 @@ struct virtio_user_dev; struct virtio_user_backend_ops { int (*setup)(struct virtio_user_dev *dev); + int (*set_owner)(struct virtio_user_dev *dev); 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 2c805077af..b79dcad179 100644 --- a/drivers/net/virtio/virtio_user/vhost_kernel.c +++ b/drivers/net/virtio/virtio_user/vhost_kernel.c @@ -6,6 +6,7 @@ #include #include #include +#include #include @@ -55,8 +56,28 @@ get_vhost_kernel_max_regions(void) close(fd); } +static int +vhost_kernel_ioctl(int fd, uint64_t request, void *arg) +{ + int ret; + + ret = ioctl(fd, request, arg); + if (ret) { + PMD_DRV_LOG(ERR, "Vhost-kernel ioctl %"PRIu64" failed (%s)", + request, strerror(errno)); + return -1; + } + + return 0; +} + +static int +vhost_kernel_set_owner(struct virtio_user_dev *dev) +{ + return vhost_kernel_ioctl(dev->vhostfds[0], VHOST_SET_OWNER, NULL); +} + static uint64_t vhost_req_user_to_kernel[] = { - [VHOST_USER_SET_OWNER] = VHOST_SET_OWNER, [VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER, [VHOST_USER_SET_FEATURES] = VHOST_SET_FEATURES, [VHOST_USER_GET_FEATURES] = VHOST_GET_FEATURES, @@ -175,7 +196,7 @@ tap_support_features(void) } static int -vhost_kernel_ioctl(struct virtio_user_dev *dev, +vhost_kernel_send_request(struct virtio_user_dev *dev, enum vhost_user_request req, void *arg) { @@ -385,6 +406,7 @@ set_backend: struct virtio_user_backend_ops virtio_ops_kernel = { .setup = vhost_kernel_setup, - .send_request = vhost_kernel_ioctl, + .set_owner = vhost_kernel_set_owner, + .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 55c813333a..ea3bd4ca10 100644 --- a/drivers/net/virtio/virtio_user/vhost_user.c +++ b/drivers/net/virtio/virtio_user/vhost_user.c @@ -125,6 +125,24 @@ fail: return -1; } +static int +vhost_user_set_owner(struct virtio_user_dev *dev) +{ + int ret; + struct vhost_user_msg msg = { + .request = VHOST_USER_SET_OWNER, + .flags = VHOST_USER_VERSION, + }; + + ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0); + if (ret < 0) { + PMD_DRV_LOG(ERR, "Failed to set owner"); + return -1; + } + + return 0; +} + struct walk_arg { struct vhost_memory *vm; int *fds; @@ -230,7 +248,6 @@ prepare_vhost_memory_user(struct vhost_user_msg *msg, int fds[]) static struct vhost_user_msg m; const char * const vhost_msg_strings[] = { - [VHOST_USER_SET_OWNER] = "VHOST_SET_OWNER", [VHOST_USER_RESET_OWNER] = "VHOST_RESET_OWNER", [VHOST_USER_SET_FEATURES] = "VHOST_SET_FEATURES", [VHOST_USER_GET_FEATURES] = "VHOST_GET_FEATURES", @@ -308,7 +325,6 @@ vhost_user_sock(struct virtio_user_dev *dev, msg.size = sizeof(m.payload.u64); break; - case VHOST_USER_SET_OWNER: case VHOST_USER_RESET_OWNER: break; @@ -519,6 +535,7 @@ vhost_user_enable_queue_pair(struct virtio_user_dev *dev, struct virtio_user_backend_ops virtio_ops_user = { .setup = vhost_user_setup, + .set_owner = vhost_user_set_owner, .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 004802b9eb..d9bc213e0d 100644 --- a/drivers/net/virtio/virtio_user/vhost_vdpa.c +++ b/drivers/net/virtio/virtio_user/vhost_vdpa.c @@ -39,7 +39,6 @@ #define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64) static uint64_t vhost_req_user_to_vdpa[] = { - [VHOST_USER_SET_OWNER] = VHOST_SET_OWNER, [VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER, [VHOST_USER_SET_FEATURES] = VHOST_SET_FEATURES, [VHOST_USER_GET_FEATURES] = VHOST_GET_FEATURES, @@ -86,6 +85,28 @@ struct vhost_msg { }; }; + +static int +vhost_vdpa_ioctl(int fd, uint64_t request, void *arg) +{ + int ret; + + ret = ioctl(fd, request, arg); + if (ret) { + PMD_DRV_LOG(ERR, "Vhost-vDPA ioctl %"PRIu64" failed (%s)", + request, strerror(errno)); + return -1; + } + + return 0; +} + +static int +vhost_vdpa_set_owner(struct virtio_user_dev *dev) +{ + return vhost_vdpa_ioctl(dev->vhostfd, VHOST_SET_OWNER, NULL); +} + static int vhost_vdpa_iotlb_batch_begin(struct virtio_user_dev *dev) { @@ -308,7 +329,7 @@ batch_end: (1ULL << VIRTIO_NET_F_CSUM)) static int -vhost_vdpa_ioctl(struct virtio_user_dev *dev, +vhost_vdpa_send_request(struct virtio_user_dev *dev, enum vhost_user_request req, void *arg) { @@ -396,7 +417,7 @@ vhost_vdpa_enable_queue_pair(struct virtio_user_dev *dev, .num = enable, }; - if (vhost_vdpa_ioctl(dev, VHOST_USER_SET_VRING_ENABLE, &state)) + if (vhost_vdpa_send_request(dev, VHOST_USER_SET_VRING_ENABLE, &state)) return -1; } @@ -407,7 +428,8 @@ vhost_vdpa_enable_queue_pair(struct virtio_user_dev *dev, struct virtio_user_backend_ops virtio_ops_vdpa = { .setup = vhost_vdpa_setup, - .send_request = vhost_vdpa_ioctl, + .set_owner = vhost_vdpa_set_owner, + .send_request = vhost_vdpa_send_request, .enable_qp = vhost_vdpa_enable_queue_pair, .dma_map = vhost_vdpa_dma_map_batch, .dma_unmap = vhost_vdpa_dma_unmap_batch, diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c index 202431ca22..f4b97d8489 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c @@ -490,8 +490,7 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, (1ULL << VHOST_USER_F_PROTOCOL_FEATURES); if (!dev->is_server) { - if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER, - NULL) < 0) { + if (dev->ops->set_owner(dev) < 0) { PMD_INIT_LOG(ERR, "set_owner fails: %s", strerror(errno)); return -1; -- 2.20.1