diff options
| -rw-r--r-- | include/net/tap.h | 2 | ||||
| -rw-r--r-- | net/tap-win32.c | 10 | ||||
| -rw-r--r-- | net/tap.c | 43 |
3 files changed, 52 insertions, 3 deletions
diff --git a/include/net/tap.h b/include/net/tap.h index 883cebff07..a994f20447 100644 --- a/include/net/tap.h +++ b/include/net/tap.h @@ -35,6 +35,8 @@ int tap_has_vnet_hdr_len(NetClientState *nc, int len); void tap_using_vnet_hdr(NetClientState *nc, bool using_vnet_hdr); void tap_set_offload(NetClientState *nc, int csum, int tso4, int tso6, int ecn, int ufo); void tap_set_vnet_hdr_len(NetClientState *nc, int len); +int tap_enable(NetClientState *nc); +int tap_disable(NetClientState *nc); int tap_get_fd(NetClientState *nc); diff --git a/net/tap-win32.c b/net/tap-win32.c index 601437ee2d..91e9e844a0 100644 --- a/net/tap-win32.c +++ b/net/tap-win32.c @@ -764,3 +764,13 @@ void tap_set_vnet_hdr_len(NetClientState *nc, int len) { abort(); } + +int tap_enable(NetClientState *nc) +{ + abort(); +} + +int tap_disable(NetClientState *nc) +{ + abort(); +} @@ -59,6 +59,7 @@ typedef struct TAPState { bool write_poll; bool using_vnet_hdr; bool has_ufo; + bool enabled; VHostNetState *vhost_net; unsigned host_vnet_hdr_len; } TAPState; @@ -72,9 +73,9 @@ static void tap_writable(void *opaque); static void tap_update_fd_handler(TAPState *s) { qemu_set_fd_handler2(s->fd, - s->read_poll ? tap_can_send : NULL, - s->read_poll ? tap_send : NULL, - s->write_poll ? tap_writable : NULL, + s->read_poll && s->enabled ? tap_can_send : NULL, + s->read_poll && s->enabled ? tap_send : NULL, + s->write_poll && s->enabled ? tap_writable : NULL, s); } @@ -337,6 +338,7 @@ static TAPState *net_tap_fd_init(NetClientState *peer, s->host_vnet_hdr_len = vnet_hdr ? sizeof(struct virtio_net_hdr) : 0; s->using_vnet_hdr = false; s->has_ufo = tap_probe_has_ufo(s->fd); + s->enabled = true; tap_set_offload(&s->nc, 0, 0, 0, 0, 0); /* * Make sure host header length is set correctly in tap: @@ -735,3 +737,38 @@ VHostNetState *tap_get_vhost_net(NetClientState *nc) assert(nc->info->type == NET_CLIENT_OPTIONS_KIND_TAP); return s->vhost_net; } + +int tap_enable(NetClientState *nc) +{ + TAPState *s = DO_UPCAST(TAPState, nc, nc); + int ret; + + if (s->enabled) { + return 0; + } else { + ret = tap_fd_enable(s->fd); + if (ret == 0) { + s->enabled = true; + tap_update_fd_handler(s); + } + return ret; + } +} + +int tap_disable(NetClientState *nc) +{ + TAPState *s = DO_UPCAST(TAPState, nc, nc); + int ret; + + if (s->enabled == 0) { + return 0; + } else { + ret = tap_fd_disable(s->fd); + if (ret == 0) { + qemu_purge_queued_packets(nc); + s->enabled = false; + tap_update_fd_handler(s); + } + return ret; + } +} |