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Message-ID: <alpine.DEB.2.02.1408221315540.1488@tomh.mtv.corp.google.com>
Date: Fri, 22 Aug 2014 13:34:04 -0700 (PDT)
From: Tom Herbert <therbert@...gle.com>
To: davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH v2 net-next 2/6] net: add gro_compute_pseudo functions
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 <therbert@...gle.com>
---
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,
--
2.1.0.rc2.206.gedb03e5
--
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