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authorOuyang Changchun <changchun.ouyang@intel.com>2015-05-28 09:23:06 +0800
committerMichael S. Tsirkin <mst@redhat.com>2015-06-01 14:18:55 +0200
commit830d70db692e374b55555f4407f96a1ceefdcc97 (patch)
tree3b10c88b7e16ff9db59d3eb253d0a2d6b7819aac /net
parent019a3edbb25f1571e876f8af1ce4c55412939e5d (diff)
vhost-user: add multi queue support
Based on patch by Nikolay Nikolaev: Vhost-user will implement the multi queue support in a similar way to what vhost already has - a separate thread for each queue. To enable the multi queue functionality - a new command line parameter "queues" is introduced for the vhost-user netdev. Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'net')
-rw-r--r--net/vhost-user.c37
1 files changed, 24 insertions, 13 deletions
diff --git a/net/vhost-user.c b/net/vhost-user.c
index 11899c53c0..8d2672846f 100644
--- a/net/vhost-user.c
+++ b/net/vhost-user.c
@@ -121,35 +121,39 @@ static void net_vhost_user_event(void *opaque, int event)
case CHR_EVENT_OPENED:
vhost_user_start(s);
net_vhost_link_down(s, false);
- error_report("chardev \"%s\" went up", s->chr->label);
+ error_report("chardev \"%s\" went up", s->nc.info_str);
break;
case CHR_EVENT_CLOSED:
net_vhost_link_down(s, true);
vhost_user_stop(s);
- error_report("chardev \"%s\" went down", s->chr->label);
+ error_report("chardev \"%s\" went down", s->nc.info_str);
break;
}
}
static int net_vhost_user_init(NetClientState *peer, const char *device,
- const char *name, CharDriverState *chr)
+ const char *name, CharDriverState *chr,
+ uint32_t queues)
{
NetClientState *nc;
VhostUserState *s;
+ int i;
- nc = qemu_new_net_client(&net_vhost_user_info, peer, device, name);
+ for (i = 0; i < queues; i++) {
+ nc = qemu_new_net_client(&net_vhost_user_info, peer, device, name);
- snprintf(nc->info_str, sizeof(nc->info_str), "vhost-user to %s",
- chr->label);
+ snprintf(nc->info_str, sizeof(nc->info_str), "vhost-user%d to %s",
+ i, chr->label);
- s = DO_UPCAST(VhostUserState, nc, nc);
+ s = DO_UPCAST(VhostUserState, nc, nc);
- /* We don't provide a receive callback */
- s->nc.receive_disabled = 1;
- s->chr = chr;
-
- qemu_chr_add_handlers(s->chr, NULL, NULL, net_vhost_user_event, s);
+ /* We don't provide a receive callback */
+ s->nc.receive_disabled = 1;
+ s->chr = chr;
+ s->nc.queue_index = i;
+ qemu_chr_add_handlers(s->chr, NULL, NULL, net_vhost_user_event, s);
+ }
return 0;
}
@@ -226,6 +230,7 @@ int net_init_vhost_user(const NetClientOptions *opts, const char *name,
NetClientState *peer, Error **errp)
{
/* FIXME error_setg(errp, ...) on failure */
+ uint32_t queues;
const NetdevVhostUserOptions *vhost_user_opts;
CharDriverState *chr;
@@ -244,6 +249,12 @@ int net_init_vhost_user(const NetClientOptions *opts, const char *name,
return -1;
}
+ /* number of queues for multiqueue */
+ if (vhost_user_opts->has_queues) {
+ queues = vhost_user_opts->queues;
+ } else {
+ queues = 1;
+ }
- return net_vhost_user_init(peer, "vhost_user", name, chr);
+ return net_vhost_user_init(peer, "vhost_user", name, chr, queues);
}