From patchwork Mon Jan 11 17:20:58 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [PATCH-RFC,08/13] net/tap: add interface to get device fd From: "Michael S. Tsirkin" X-Patchwork-Id: 42641 Message-Id: <20100111172058.GI11936@redhat.com> To: Anthony Liguori , qemu-devel@nongnu.org Cc: Date: Mon, 11 Jan 2010 19:20:58 +0200 Will be used by vhost to attach/detach to backend. Signed-off-by: Michael S. Tsirkin --- net/tap.c | 7 +++++++ net/tap.h | 2 ++ 2 files changed, 9 insertions(+), 0 deletions(-) diff --git a/net/tap.c b/net/tap.c index d3492de..7e9ca79 100644 --- a/net/tap.c +++ b/net/tap.c @@ -269,6 +269,13 @@ static void tap_poll(VLANClientState *nc, bool enable) tap_write_poll(s, enable); } +int tap_get_fd(VLANClientState *nc) +{ + TAPState *s = DO_UPCAST(TAPState, nc, nc); + assert(nc->info->type == NET_CLIENT_TYPE_TAP); + return s->fd; +} + /* fd support */ static NetClientInfo net_tap_info = { diff --git a/net/tap.h b/net/tap.h index 538a562..a244b28 100644 --- a/net/tap.h +++ b/net/tap.h @@ -48,4 +48,6 @@ int tap_probe_vnet_hdr(int fd); int tap_probe_has_ufo(int fd); void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo); +int tap_get_fd(VLANClientState *vc); + #endif /* QEMU_NET_TAP_H */