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| author | Arnaldo Carvalho de Melo <acme@ghostprotocols.net> | 2005-08-09 20:08:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2005-08-29 15:42:02 -0700 |
| commit | 81849d106b1fb97f8e2d311c0c4d36347def55b8 (patch) | |
| tree | ba1188f1b38f5b608756d94395c919ab5f7b8b3c /include/net/inet_hashtables.h | |
| parent | c752f0739f09b803aed191c4765a3b6650a08653 (diff) | |
| download | linux-81849d106b1fb97f8e2d311c0c4d36347def55b8.tar.gz linux-81849d106b1fb97f8e2d311c0c4d36347def55b8.tar.bz2 linux-81849d106b1fb97f8e2d311c0c4d36347def55b8.zip | |
[INET]: Generalise tcp_v4_hash & tcp_unhash
It really just makes the existing code be a helper function that
tcp_v4_hash and tcp_unhash uses, specifying the right inet_hashinfo,
tcp_hashinfo.
One thing I'll investigate at some point is to have the inet_hashinfo
pointer in sk_prot, so that we get all the hashtable information from
the sk pointer, this can lead to some extra indirections that may well
hurt performance/code size, we'll see. Ultimate idea would be that
sk_prot would provide _all_ the information about a protocol
implementation.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_hashtables.h')
| -rw-r--r-- | include/net/inet_hashtables.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h index c816708fa556..6731df2cea67 100644 --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -240,4 +240,38 @@ static inline void __inet_hash(struct inet_hashinfo *hashinfo, if (listen_possible && sk->sk_state == TCP_LISTEN) wake_up(&hashinfo->lhash_wait); } + +static inline void inet_hash(struct inet_hashinfo *hashinfo, struct sock *sk) +{ + if (sk->sk_state != TCP_CLOSE) { + local_bh_disable(); + __inet_hash(hashinfo, sk, 1); + local_bh_enable(); + } +} + +static inline void inet_unhash(struct inet_hashinfo *hashinfo, struct sock *sk) +{ + rwlock_t *lock; + + if (sk_unhashed(sk)) + goto out; + + if (sk->sk_state == TCP_LISTEN) { + local_bh_disable(); + inet_listen_wlock(hashinfo); + lock = &hashinfo->lhash_lock; + } else { + struct inet_ehash_bucket *head = &hashinfo->ehash[sk->sk_hashent]; + lock = &head->lock; + write_lock_bh(&head->lock); + } + + if (__sk_del_node_init(sk)) + sock_prot_dec_use(sk->sk_prot); + write_unlock_bh(lock); +out: + if (sk->sk_state == TCP_LISTEN) + wake_up(&hashinfo->lhash_wait); +} #endif /* _INET_HASHTABLES_H */ |