[PATCH net-2.6.25][IPV6]: Introduce the INET6_TW_MATCH() macro.
From: Pavel Emelyanov <hidden>
Date: 2008-01-24 15:54:42
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
We have INET_MATCH, INET_TW_MATCH and INET6_MATCH to test
sockets and twbuckets for matching, but ipv6 twbuckets are
tested manually.
Here's the INET6_TW_MATCH to help with it.
Since the commit b3652b2dc5ec6ccd946ae9136b30c6babb81305a
[IPV6]: Mischecked tw match in __inet6_check_established.
is accepted this patch will not break the __inet6_check_est.
logic.
This will also help with per-namespace socket lookup patches
in the nearest future.
Signed-off-by: Pavel Emelyanov <redacted>
---
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 5d35a4c..c347860 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h@@ -465,6 +465,14 @@ static inline struct raw6_sock *raw6_sk(const struct sock *sk) ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \ (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) +#define INET6_TW_MATCH(__sk, __hash, __saddr, __daddr, __ports, __dif) \ + (((__sk)->sk_hash == (__hash)) && \ + (*((__portpair *)&(inet_twsk(__sk)->tw_dport)) == (__ports)) && \ + ((__sk)->sk_family == PF_INET6) && \ + (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_daddr, (__saddr))) && \ + (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_rcv_saddr, (__daddr))) && \ + (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) + #endif /* __KERNEL__ */ #endif /* _IPV6_H */
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index d0b3447..06b01be 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c@@ -80,17 +80,8 @@ struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo, } /* Must check for a TIME_WAIT'er before going to listener hash. */ sk_for_each(sk, node, &head->twchain) { - const struct inet_timewait_sock *tw = inet_twsk(sk); - - if(*((__portpair *)&(tw->tw_dport)) == ports && - sk->sk_family == PF_INET6) { - const struct inet6_timewait_sock *tw6 = inet6_twsk(sk); - - if (ipv6_addr_equal(&tw6->tw_v6_daddr, saddr) && - ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) && - (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif)) - goto hit; - } + if (INET6_TW_MATCH(sk, hash, saddr, daddr, ports, dif)) + goto hit; } read_unlock(lock); return NULL;
@@ -185,15 +176,9 @@ static int __inet6_check_established(struct inet_timewait_death_row *death_row, /* Check TIME-WAIT sockets first. */ sk_for_each(sk2, node, &head->twchain) { - const struct inet6_timewait_sock *tw6 = inet6_twsk(sk2); - tw = inet_twsk(sk2); - if(*((__portpair *)&(tw->tw_dport)) == ports && - sk2->sk_family == PF_INET6 && - ipv6_addr_equal(&tw6->tw_v6_daddr, saddr) && - ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr) && - sk2->sk_bound_dev_if == sk->sk_bound_dev_if) { + if (INET6_TW_MATCH(sk2, hash, saddr, daddr, ports, dif)) { if (twsk_unique(sk, sk2, twp)) goto unique; else