vhost: support sending fds via slave channel

This function will be used to send fds to QEMU via slave channel.

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 5c53610..08956dc 100644 (file)
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1275,13 +1275,13 @@ read_vhost_message(int sockfd, struct VhostUserMsg *msg)
 }
 
 static int
-send_vhost_message(int sockfd, struct VhostUserMsg *msg)
+send_vhost_message(int sockfd, struct VhostUserMsg *msg, int *fds, int fd_num)
 {
        if (!msg)
                return 0;
 
        return send_fd_message(sockfd, (char *)msg,
-               VHOST_USER_HDR_SIZE + msg->size, NULL, 0);
+               VHOST_USER_HDR_SIZE + msg->size, fds, fd_num);
 }
 
 static int
@@ -1295,7 +1295,7 @@ send_vhost_reply(int sockfd, struct VhostUserMsg *msg)
        msg->flags |= VHOST_USER_VERSION;
        msg->flags |= VHOST_USER_REPLY_MASK;
 
-       return send_vhost_message(sockfd, msg);
+       return send_vhost_message(sockfd, msg, NULL, 0);
 }
 
 /*
@@ -1598,7 +1598,7 @@ vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
                },
        };
 
-       ret = send_vhost_message(dev->slave_req_fd, &msg);
+       ret = send_vhost_message(dev->slave_req_fd, &msg, NULL, 0);
        if (ret < 0) {
                RTE_LOG(ERR, VHOST_CONFIG,
                                "Failed to send IOTLB miss message (%d)\n",