diff options
| author |   Cong Wang <amwang@redhat.com> | 2013-08-31 13:44:38 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-08-31 22:30:01 -0400 |
| commit | eb3c0d83cc78361a28e52e514a7095fdbf771e7e (patch) | |
| tree | 78cdcc8781c3e040546e72c49f201ba2659353d0 /net/ipv4/udp.c | |
| parent | ipv6: Add generic UDP Tunnel segmentation (diff) | |
| download | linux-dev-eb3c0d83cc78361a28e52e514a7095fdbf771e7e.tar.xz linux-dev-eb3c0d83cc78361a28e52e514a7095fdbf771e7e.zip | |
net: unify skb_udp_tunnel_segment() and skb_udp6_tunnel_segment()
As suggested by Pravin, we can unify the code in case of duplicated
code.
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
| -rw-r--r-- | net/ipv4/udp.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 0b24508bcdc4..74d2c95db57f 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -2337,7 +2337,7 @@ struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, uh->len = htons(skb->len - udp_offset); /* csum segment if tunnel sets skb with csum. */ - if (unlikely(uh->check)) { + if (protocol == htons(ETH_P_IP) && unlikely(uh->check)) { struct iphdr *iph = ip_hdr(skb); uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, @@ -2348,7 +2348,18 @@ struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, if (uh->check == 0) uh->check = CSUM_MANGLED_0; + } else if (protocol == htons(ETH_P_IPV6)) { + struct ipv6hdr *ipv6h = ipv6_hdr(skb); + u32 len = skb->len - udp_offset; + + uh->check = ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, + len, IPPROTO_UDP, 0); + uh->check = csum_fold(skb_checksum(skb, udp_offset, len, 0)); + if (uh->check == 0) + uh->check = CSUM_MANGLED_0; + skb->ip_summed = CHECKSUM_NONE; } + skb->protocol = protocol; } while ((skb = skb->next)); out: |