diff options
| author |   Eric Dumazet <edumazet@google.com> | 2013-10-03 15:42:29 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-10-09 00:01:25 -0400 |
| commit | efe4208f47f907b86f528788da711e8ab9dea44d (patch) | |
| tree | 8246b487be087877ba26d166f629d8c53d553ec1 /include/net/inet_timewait_sock.h | |
| parent | tcp/dccp: remove twchain (diff) | |
| download | linux-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 '')
| -rw-r--r-- | include/net/inet_timewait_sock.h | 4 |
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; |