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tap: make set_offload a nop after netdev cleanup 

virtio-net expects set_offload to succeed after
peer cleanup.
Since we don't have an open fd anymore, make it so.
Fixes warning about the failure of offload setting.

Reported-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2010-10-31 19:06:47 +02:00 committed by Anthony Liguori
parent f6584ee203
commit 27a6375de3
1 changed files with 5 additions and 1 deletions
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6
net/tap.c
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@ -269,8 +269,11 @@ void tap_set_offload(VLANClientState *nc, int csum, int tso4,
int tso6, int ecn, int ufo) int tso6, int ecn, int ufo)
{ {
TAPState *s = DO_UPCAST(TAPState, nc, nc); TAPState *s = DO_UPCAST(TAPState, nc, nc);
if (s->fd < 0) {
return;
}
return tap_fd_set_offload(s->fd, csum, tso4, tso6, ecn, ufo); tap_fd_set_offload(s->fd, csum, tso4, tso6, ecn, ufo);
} }
static void tap_cleanup(VLANClientState *nc) static void tap_cleanup(VLANClientState *nc)
@ -290,6 +293,7 @@ static void tap_cleanup(VLANClientState *nc)
tap_read_poll(s, 0); tap_read_poll(s, 0);
tap_write_poll(s, 0); tap_write_poll(s, 0);
close(s->fd); close(s->fd);
s->fd = -1;
} }
static void tap_poll(VLANClientState *nc, bool enable) static void tap_poll(VLANClientState *nc, bool enable)