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authorEric Dumazet <edumazet@google.com>2013-10-03 15:42:29 -0700
committerDavid S. Miller <davem@davemloft.net>2013-10-09 00:01:25 -0400
commitefe4208f47f907b86f528788da711e8ab9dea44d (patch)
tree8246b487be087877ba26d166f629d8c53d553ec1 /include/net/ip6_checksum.h
parent05dbc7b59481ca891bbcfe6799a562d48159fbf7 (diff)
ipv6: make lookups simpler and faster
TCP listener refactoring, part 4 : To speed up inet lookups, we moved IPv4 addresses from inet to struct sock_common Now is time to do the same for IPv6, because it permits us to have fast lookups for all kind of sockets, including upcoming SYN_RECV. Getting IPv6 addresses in TCP lookups currently requires two extra cache lines, plus a dereference (and memory stall). inet6_sk(sk) does the dereference of inet_sk(__sk)->pinet6 This patch is way bigger than its IPv4 counter part, because for IPv4, we could add aliases (inet_daddr, inet_rcv_saddr), while on IPv6, it's not doable easily. inet6_sk(sk)->daddr becomes sk->sk_v6_daddr inet6_sk(sk)->rcv_saddr becomes sk->sk_v6_rcv_saddr And timewait socket also have tw->tw_v6_daddr & tw->tw_v6_rcv_saddr at the same offset. We get rid of INET6_TW_MATCH() as INET6_MATCH() is now the generic macro. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ip6_checksum.h')
-rw-r--r--include/net/ip6_checksum.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h
index 7686e3f5033d..1944406949ba 100644
--- a/include/net/ip6_checksum.h
+++ b/include/net/ip6_checksum.h
@@ -70,7 +70,7 @@ static inline void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb)
{
struct ipv6_pinfo *np = inet6_sk(sk);
- __tcp_v6_send_check(skb, &np->saddr, &np->daddr);
+ __tcp_v6_send_check(skb, &np->saddr, &sk->sk_v6_daddr);
}
int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto);