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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-09-24 15:59:17 (GMT) |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-09-24 00:29:18 (GMT) |
| commit | 2b5bbe3b8bee8b38bdc27dd9c0270829b6eb7eeb (patch) | |
| tree | ae10e097de665aba47306799e9ab5ef44776e1e1 /drivers | |
| parent | a724eada8c2a7b62463b73ccf73fd0bb6e928aeb (diff) | |
| download | linux-fsl-qoriq-2b5bbe3b8bee8b38bdc27dd9c0270829b6eb7eeb.tar.xz | |
virtio_net: skb_orphan() and nf_reset() in xmit path.
The complex transmit free logic was introduced to avoid hangs on
removing the ip_conntrack module and also because drivers aren't
generally supposed to keep stale skbs for unbounded times.
After some debate, it was decided that while doing skb_orphan()
generally is a rat's nest, we can do it in this driver. Following
patches take advantage of this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/virtio_net.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 5c498d2..dc4c687 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -528,8 +528,12 @@ static int xmit_skb(struct virtnet_info *vi, struct sk_buff *skb) num = skb_to_sgvec(skb, sg+1, 0, skb->len) + 1; err = vi->svq->vq_ops->add_buf(vi->svq, sg, num, 0, skb); - if (err >= 0 && !vi->free_in_tasklet) + if (err >= 0 && !vi->free_in_tasklet) { + /* Don't wait up for transmitted skbs to be freed. */ + skb_orphan(skb); + nf_reset(skb); mod_timer(&vi->xmit_free_timer, jiffies + (HZ/10)); + } return err; } |