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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/inet_timewait_sock.h
parenttcp/dccp: remove twchain (diff)
downloadlinux-dev-efe4208f47f907b86f528788da711e8ab9dea44d.tar.xz
linux-dev-efe4208f47f907b86f528788da711e8ab9dea44d.zip
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/inet_timewait_sock.h')
-rw-r--r--include/net/inet_timewait_sock.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index de9e3ab7d43d..b647c6270eb7 100644
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -116,7 +116,9 @@ struct inet_timewait_sock {
#define tw_prot __tw_common.skc_prot
#define tw_net __tw_common.skc_net
#define tw_daddr __tw_common.skc_daddr
+#define tw_v6_daddr __tw_common.skc_v6_daddr
#define tw_rcv_saddr __tw_common.skc_rcv_saddr
+#define tw_v6_rcv_saddr __tw_common.skc_v6_rcv_saddr
#define tw_dport __tw_common.skc_dport
#define tw_num __tw_common.skc_num
@@ -133,7 +135,7 @@ struct inet_timewait_sock {
tw_transparent : 1,
tw_pad : 6, /* 6 bits hole */
tw_tos : 8,
- tw_ipv6_offset : 16;
+ tw_pad2 : 16 /* 16 bits hole */
kmemcheck_bitfield_end(flags);
u32 tw_ttd;
struct inet_bind_bucket *tw_tb;