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| author | David S. Miller <davem@davemloft.net> | 2018-05-26 19:46:15 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-05-26 19:46:15 -0400 |
| commit | 5b79c2af667c0e2684f2a6dbf6439074b78f490c (patch) | |
| tree | efda2b94317c914fef0bfb25fe5ada9e253d5415 /drivers/net/virtio_net.c | |
| parent | e52cde71709348c0d67bf0f213b438fa4d6cf9a9 (diff) | |
| parent | bc2dbc5420e82560e650f8531ceca597441ca171 (diff) | |
| download | blackbird-op-linux-5b79c2af667c0e2684f2a6dbf6439074b78f490c.tar.gz blackbird-op-linux-5b79c2af667c0e2684f2a6dbf6439074b78f490c.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Lots of easy overlapping changes in the confict
resolutions here.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 39a0783d1cde..b2647dd5d302 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -745,6 +745,13 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, void *data; u32 act; + /* Transient failure which in theory could occur if + * in-flight packets from before XDP was enabled reach + * the receive path after XDP is loaded. + */ + if (unlikely(hdr->hdr.gso_type)) + goto err_xdp; + /* This happens when rx buffer size is underestimated * or headroom is not enough because of the buffer * was refilled before XDP is set. This should only @@ -765,14 +772,6 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, xdp_page = page; } - /* Transient failure which in theory could occur if - * in-flight packets from before XDP was enabled reach - * the receive path after XDP is loaded. In practice I - * was not able to create this condition. - */ - if (unlikely(hdr->hdr.gso_type)) - goto err_xdp; - /* Allow consuming headroom but reserve enough space to push * the descriptor on if we get an XDP_TX return code. */ @@ -820,7 +819,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, } *xdp_xmit = true; if (unlikely(xdp_page != page)) - goto err_xdp; + put_page(page); rcu_read_unlock(); goto xdp_xmit; case XDP_REDIRECT: @@ -832,7 +831,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, } *xdp_xmit = true; if (unlikely(xdp_page != page)) - goto err_xdp; + put_page(page); rcu_read_unlock(); goto xdp_xmit; default: @@ -920,7 +919,7 @@ err_xdp: rcu_read_unlock(); err_skb: put_page(page); - while (--num_buf) { + while (num_buf-- > 1) { buf = virtqueue_get_buf(rq->vq, &len); if (unlikely(!buf)) { pr_debug("%s: rx error: %d buffers missing\n", |
