diff options
Diffstat (limited to 'include/net/udp.h')
-rw-r--r-- | include/net/udp.h | 11 |
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) | |||
144 | return csum; | 144 | return csum; |
145 | } | 145 | } |
146 | 146 | ||
147 | static inline __wsum udp_csum(struct sk_buff *skb) | ||
148 | { | ||
149 | __wsum csum = csum_partial(skb_transport_header(skb), | ||
150 | sizeof(struct udphdr), skb->csum); | ||
151 | |||
152 | for (skb = skb_shinfo(skb)->frag_list; skb; skb = skb->next) { | ||
153 | csum = csum_add(csum, skb->csum); | ||
154 | } | ||
155 | return csum; | ||
156 | } | ||
157 | |||
147 | /* hash routines shared between UDPv4/6 and UDP-Litev4/6 */ | 158 | /* hash routines shared between UDPv4/6 and UDP-Litev4/6 */ |
148 | static inline void udp_lib_hash(struct sock *sk) | 159 | static inline void udp_lib_hash(struct sock *sk) |
149 | { | 160 | { |