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vhost: support postcopy listen message

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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Maxime Coquelin 2018-10-12 14:40:40 +02:00 committed by Ferruh Yigit
parent 9eefef3b59
commit 25807d6893
3 changed files with 24 additions and 1 deletions
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1
lib/librte_vhost/vhost.h
View File

@ -369,6 +369,7 @@ struct virtio_net {
rte_spinlock_t slave_req_lock;
int postcopy_ufd;
int postcopy_listening;
/*
* Device id to identify a specific backend device.

21
lib/librte_vhost/vhost_user.c
View File

@ -76,6 +76,7 @@ static const char *vhost_message_str[VHOST_USER_MAX] = {
[VHOST_USER_CRYPTO_CREATE_SESS] = "VHOST_USER_CRYPTO_CREATE_SESS",
[VHOST_USER_CRYPTO_CLOSE_SESS] = "VHOST_USER_CRYPTO_CLOSE_SESS",
[VHOST_USER_POSTCOPY_ADVISE] = "VHOST_USER_POSTCOPY_ADVISE",
[VHOST_USER_POSTCOPY_LISTEN] = "VHOST_USER_POSTCOPY_LISTEN",
};
static uint64_t
@ -132,6 +133,8 @@ vhost_backend_cleanup(struct virtio_net *dev)
close(dev->postcopy_ufd);
dev->postcopy_ufd = -1;
}
dev->postcopy_listening = 0;
}
/*
@ -1549,6 +1552,23 @@ vhost_user_set_postcopy_advise(struct virtio_net **pdev,
#endif
}
static int
vhost_user_set_postcopy_listen(struct virtio_net **pdev,
struct VhostUserMsg *msg __rte_unused,
int main_fd __rte_unused)
{
struct virtio_net *dev = *pdev;
if (dev->mem && dev->mem->nregions) {
RTE_LOG(ERR, VHOST_CONFIG,
"Regions already registered at postcopy-listen\n");
return VH_RESULT_ERR;
}
dev->postcopy_listening = 1;
return VH_RESULT_OK;
}
typedef int (*vhost_message_handler_t)(struct virtio_net **pdev,
struct VhostUserMsg *msg,
int main_fd);
@ -1577,6 +1597,7 @@ static vhost_message_handler_t vhost_message_handlers[VHOST_USER_MAX] = {
[VHOST_USER_SET_SLAVE_REQ_FD] = vhost_user_set_req_fd,
[VHOST_USER_IOTLB_MSG] = vhost_user_iotlb_msg,
[VHOST_USER_POSTCOPY_ADVISE] = vhost_user_set_postcopy_advise,
[VHOST_USER_POSTCOPY_LISTEN] = vhost_user_set_postcopy_listen,
};

3
lib/librte_vhost/vhost_user.h
View File

@ -51,7 +51,8 @@ typedef enum VhostUserRequest {
VHOST_USER_CRYPTO_CREATE_SESS = 26,
VHOST_USER_CRYPTO_CLOSE_SESS = 27,
VHOST_USER_POSTCOPY_ADVISE = 28,
VHOST_USER_MAX = 29
VHOST_USER_POSTCOPY_LISTEN = 29,
VHOST_USER_MAX = 30
} VhostUserRequest;
typedef enum VhostUserSlaveRequest {