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authorHerbert Xu <herbert@gondor.apana.org.au>2011-03-01 05:36:48 +0300
committerDavid S. Miller <davem@davemloft.net>2011-03-01 23:35:03 +0300
commitf6b9664f8b711cf4fd53e70aa0d21f72d5bf806c (patch)
tree878a8438b00e58b9b898a74f3cc4a32c1d5d8477 /include/net/udp.h
parent1c32c5ad6fac8cee1a77449f5abf211e911ff830 (diff)
downloadlinux-f6b9664f8b711cf4fd53e70aa0d21f72d5bf806c.tar.xz
udp: Switch to ip_finish_skb
This patch converts UDP to use the new ip_finish_skb API. This would then allows us to more easily use ip_make_skb which allows UDP to run without a socket lock. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/udp.h')
-rw-r--r--include/net/udp.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/udp.h b/include/net/udp.h
index e82f3a8c0f8f..67ea6fcb3ec0 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -144,6 +144,17 @@ static inline __wsum udp_csum_outgoing(struct sock *sk, struct sk_buff *skb)
return csum;
}
+static inline __wsum udp_csum(struct sk_buff *skb)
+{
+ __wsum csum = csum_partial(skb_transport_header(skb),
+ sizeof(struct udphdr), skb->csum);
+
+ for (skb = skb_shinfo(skb)->frag_list; skb; skb = skb->next) {
+ csum = csum_add(csum, skb->csum);
+ }
+ return csum;
+}
+
/* hash routines shared between UDPv4/6 and UDP-Litev4/6 */
static inline void udp_lib_hash(struct sock *sk)
{