diff options
| author | Jason Wang <jasowang@redhat.com> | 2013-11-01 14:07:47 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-04 20:03:52 -0500 |
| commit | f8e617e100d7369a0108f96abf4414e9fb82ced7 (patch) | |
| tree | 669f70c7c3ce6ed05097771890d708d83f1eb8be /net | |
| parent | e50fddc8b0c0698cba446221be3654aa0a642372 (diff) | |
| download | linux-f8e617e100d7369a0108f96abf4414e9fb82ced7.tar.bz2 | |
net: introduce skb_coalesce_rx_frag()
Sometimes we need to coalesce the rx frags to avoid frag list. One example is
virtio-net driver which tries to use small frags for both MTU sized packet and
GSO packet. So this patch introduce skb_coalesce_rx_frag() to do this.
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Michael Dalton <mwdalton@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/skbuff.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index e4115597b38b..3735fad5616e 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -476,6 +476,18 @@ void skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, int off, } EXPORT_SYMBOL(skb_add_rx_frag); +void skb_coalesce_rx_frag(struct sk_buff *skb, int i, int size, + unsigned int truesize) +{ + skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + + skb_frag_size_add(frag, size); + skb->len += size; + skb->data_len += size; + skb->truesize += truesize; +} +EXPORT_SYMBOL(skb_coalesce_rx_frag); + static void skb_drop_list(struct sk_buff **listp) { kfree_skb_list(*listp); |