path: root/include/net/udplite.h
diff options
authorHerbert Xu <herbert@gondor.apana.org.au>2011-03-01 02:36:48 +0000
committerDavid S. Miller <davem@davemloft.net>2011-03-01 12:35:03 -0800
commitf6b9664f8b711cf4fd53e70aa0d21f72d5bf806c (patch)
tree878a8438b00e58b9b898a74f3cc4a32c1d5d8477 /include/net/udplite.h
parentinet: Add ip_make_skb and ip_finish_skb (diff)
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/udplite.h')
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/udplite.h b/include/net/udplite.h
index afdffe607b24..673a024c6b2a 100644
--- a/include/net/udplite.h
+++ b/include/net/udplite.h
@@ -115,6 +115,18 @@ static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
return csum;
+static inline __wsum udplite_csum(struct sk_buff *skb)
+ struct sock *sk = skb->sk;
+ int cscov = udplite_sender_cscov(udp_sk(sk), udp_hdr(skb));
+ const int off = skb_transport_offset(skb);
+ const int len = skb->len - off;
+ skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */
+ return skb_checksum(skb, off, min(cscov, len), 0);
extern void udplite4_register(void);
extern int udplite_get_port(struct sock *sk, unsigned short snum,
int (*scmp)(const struct sock *, const struct sock *));