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vhost: support IOTLB miss slave requests

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Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
This commit is contained in:
Maxime Coquelin 2017-10-05 10:36:16 +02:00 committed by Yuanhan Liu
parent f72c2ad63a
commit 01a4bb55f9
2 changed files with 29 additions and 0 deletions
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26
lib/librte_vhost/vhost_user.c
View File

@ -1168,3 +1168,29 @@ vhost_user_msg_handler(int vid, int fd)
return 0;
}
int
vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
{
int ret;
struct VhostUserMsg msg = {
.request = (enum VhostUserRequest)VHOST_USER_SLAVE_IOTLB_MSG,
.flags = VHOST_USER_VERSION,
.size = sizeof(msg.payload.iotlb),
.payload.iotlb = {
.iova = iova,
.perm = perm,
.type = VHOST_IOTLB_MISS,
},
};
ret = send_vhost_message(dev->slave_req_fd, &msg);
if (ret < 0) {
RTE_LOG(ERR, VHOST_CONFIG,
"Failed to send IOTLB miss message (%d)\n",
ret);
return ret;
}
return 0;
}

3
lib/librte_vhost/vhost_user.h
View File

@ -85,6 +85,7 @@ typedef enum VhostUserRequest {
typedef enum VhostUserSlaveRequest {
VHOST_USER_SLAVE_NONE = 0,
VHOST_USER_SLAVE_IOTLB_MSG = 1,
VHOST_USER_SLAVE_MAX
} VhostUserSlaveRequest;
@ -122,6 +123,7 @@ typedef struct VhostUserMsg {
struct vhost_vring_addr addr;
VhostUserMemory memory;
VhostUserLog log;
struct vhost_iotlb_msg iotlb;
} payload;
int fds[VHOST_MEMORY_MAX_NREGIONS];
} __attribute((packed)) VhostUserMsg;
@ -134,6 +136,7 @@ typedef struct VhostUserMsg {
/* vhost_user.c */
int vhost_user_msg_handler(int vid, int fd);
int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm);
/* socket.c */
int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);