[RFC,05/10] vhost: add support for postcopy's 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>
---
lib/librte_vhost/vhost.h | 1 +
lib/librte_vhost/vhost_user.c | 18 ++++++++++++++++++
lib/librte_vhost/vhost_user.h | 4 +++-
3 files changed, 22 insertions(+), 1 deletion(-)
@@ -364,6 +364,7 @@ struct virtio_net {
rte_spinlock_t slave_req_lock;
int postcopy_ufd;
+ int postcopy_listening;
/*
* Device id to identify a specific backend device.
@@ -74,6 +74,7 @@ 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
@@ -1436,6 +1437,19 @@ vhost_user_set_postcopy_advise(struct virtio_net *dev, struct VhostUserMsg *msg)
return 0;
}
+static int
+vhost_user_set_postcopy_listen(struct virtio_net *dev)
+{
+ if (dev->mem && dev->mem->nregions) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Regions already registered at postcopy-listen\n");
+ return -1;
+ }
+ dev->postcopy_listening = 1;
+
+ return 0;
+}
+
/* return bytes# of read on success or negative val on failure. */
static int
read_vhost_message(int sockfd, struct VhostUserMsg *msg)
@@ -1784,6 +1798,10 @@ vhost_user_msg_handler(int vid, int fd)
send_vhost_reply(fd, &msg);
break;
+ case VHOST_USER_POSTCOPY_LISTEN:
+ ret = vhost_user_set_postcopy_listen(dev);
+ break;
+
default:
ret = -1;
break;
@@ -51,7 +51,9 @@ 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_POSTCOPY_END = 30,
+ VHOST_USER_MAX = 31
} VhostUserRequest;
typedef enum VhostUserSlaveRequest {