[PATCH v2 net-next 2/6] net: add gro_compute_pseudo functions
From: Tom Herbert <hidden>
Date: 2014-08-22 20:34:05
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
Add inet_gro_compute_pseudo and ip6_gro_compute_pseudo. These are the logical equivalents of inet_compute_pseudo and ip6_compute_pseudo for GRO path. The IP header is taken from skb_gro_network_header. Signed-off-by: Tom Herbert <redacted> --- include/net/ip.h | 8 ++++++++ include/net/ip6_checksum.h | 8 ++++++++ 2 files changed, 16 insertions(+)
diff --git a/include/net/ip.h b/include/net/ip.h
index db4a771..c8fd611 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h@@ -364,6 +364,14 @@ static inline void inet_set_txhash(struct sock *sk) sk->sk_txhash = flow_hash_from_keys(&keys); } +static inline __wsum inet_gro_compute_pseudo(struct sk_buff *skb, int proto) +{ + const struct iphdr *iph = skb_gro_network_header(skb); + + return csum_tcpudp_nofold(iph->saddr, iph->daddr, + skb_gro_len(skb), proto, 0); +} + /* * Map a multicast IP onto multicast MAC for type ethernet. */
diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h
index 55236cb..1a49b73 100644
--- a/include/net/ip6_checksum.h
+++ b/include/net/ip6_checksum.h@@ -48,6 +48,14 @@ static inline __wsum ip6_compute_pseudo(struct sk_buff *skb, int proto) skb->len, proto, 0)); } +static inline __wsum ip6_gro_compute_pseudo(struct sk_buff *skb, int proto) +{ + const struct ipv6hdr *iph = skb_gro_network_header(skb); + + return ~csum_unfold(csum_ipv6_magic(&iph->saddr, &iph->daddr, + skb_gro_len(skb), proto, 0)); +} + static __inline__ __sum16 tcp_v6_check(int len, const struct in6_addr *saddr, const struct in6_addr *daddr,
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2.1.0.rc2.206.gedb03e5