diff options
| author |   Florian Westphal <fw@strlen.de> | 2014-10-20 13:49:18 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-10-20 12:38:13 -0400 |
| commit | f993bc25e5196e60514c216d0bca0f600de64af8 (patch) | |
| tree | 14c772873becfbdfc26a1cf0c9d967ffd118f9d8 /net/core/skbuff.c | |
| parent | net: make skb_gso_segment error handling more robust (diff) | |
| download | linux-dev-f993bc25e5196e60514c216d0bca0f600de64af8.tar.xz linux-dev-f993bc25e5196e60514c216d0bca0f600de64af8.zip | |
net: core: handle encapsulation offloads when computing segment lengths
if ->encapsulation is set we have to use inner_tcp_hdrlen and add the
size of the inner network headers too.
This is 'mostly harmless'; tbf might send skb that is slightly over
quota or drop skb even if it would have fit.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 61059a05ec95..c16615bfb61e 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -4070,15 +4070,22 @@ EXPORT_SYMBOL_GPL(skb_scrub_packet); unsigned int skb_gso_transport_seglen(const struct sk_buff *skb) { const struct skb_shared_info *shinfo = skb_shinfo(skb); + unsigned int thlen = 0; - if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) - return tcp_hdrlen(skb) + shinfo->gso_size; + if (skb->encapsulation) { + thlen = skb_inner_transport_header(skb) - + skb_transport_header(skb); + if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) + thlen += inner_tcp_hdrlen(skb); + } else if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) { + thlen = tcp_hdrlen(skb); + } /* UFO sets gso_size to the size of the fragmentation * payload, i.e. the size of the L4 (UDP) header is already * accounted for. */ - return shinfo->gso_size; + return thlen + shinfo->gso_size; } EXPORT_SYMBOL_GPL(skb_gso_transport_seglen); |