From bce7e9050f9b5e92cead60e8ac7768812ce898f2 Mon Sep 17 00:00:00 2001 From: Jianfeng Tan Date: Mon, 12 Feb 2018 03:20:27 +0000 Subject: [PATCH] net/virtio-user: fix start with kernel vhost After reset owner in below patch, we failed to set owner before sending further vhost messages. It is OK with vhost user implemented DPDK/VPP/Contrail, but it sees "Operation not permitted" error when used with vhost kernel. We fix this by setting owner every time the device is started. Fixes: 0d6a8752ac9d ("net/virtio-user: fix crash as features change") Cc: stable@dpdk.org Signed-off-by: Jianfeng Tan Reviewed-by: Maxime Coquelin --- drivers/net/virtio/virtio_user/virtio_user_dev.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c index 3b5f737acf..b5809ee8c2 100644 --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c @@ -99,6 +99,9 @@ virtio_user_start_device(struct virtio_user_dev *dev) uint64_t features; int ret; + /* Do not check return as already done in init, or reset in stop */ + dev->ops->send_request(dev, VHOST_USER_SET_OWNER, NULL); + /* Step 0: tell vhost to create queues */ if (virtio_user_queue_setup(dev, virtio_user_create_queue) < 0) goto error; @@ -332,6 +335,7 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues, PMD_INIT_LOG(ERR, "backend set up fails"); return -1; } + if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER, NULL) < 0) { PMD_INIT_LOG(ERR, "set_owner fails: %s", strerror(errno)); return -1; -- 2.20.1