From 7eb95156d9dce2f59794264db336ce007d71638b Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Mon, 15 Oct 2007 02:31:52 -0700 Subject: [INET]: Collect frag queues management objects together There are some objects that are common in all the places which are used to keep track of frag queues, they are: * hash table * LRU list * rw lock * rnd number for hash function * the number of queues * the amount of memory occupied by queues * secret timer Move all this stuff into one structure (struct inet_frags) to make it possible use them uniformly in the future. Like with the previous patch this mostly consists of hunks like - write_lock(&ipfrag_lock); + write_lock(&ip4_frags.lock); To address the issue with exporting the number of queues and the amount of memory occupied by queues outside the .c file they are declared in, I introduce a couple of helpers. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv4/inet_fragment.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 net/ipv4/inet_fragment.c (limited to 'net/ipv4/inet_fragment.c') diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c new file mode 100644 index 000000000000..69623ff4e4c6 --- /dev/null +++ b/net/ipv4/inet_fragment.c @@ -0,0 +1,44 @@ +/* + * inet fragments management + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Authors: Pavel Emelyanov + * Started as consolidation of ipv4/ip_fragment.c, + * ipv6/reassembly. and ipv6 nf conntrack reassembly + */ + +#include +#include +#include +#include +#include + +#include + +void inet_frags_init(struct inet_frags *f) +{ + int i; + + for (i = 0; i < INETFRAGS_HASHSZ; i++) + INIT_HLIST_HEAD(&f->hash[i]); + + INIT_LIST_HEAD(&f->lru_list); + rwlock_init(&f->lock); + + f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^ + (jiffies ^ (jiffies >> 6))); + + f->nqueues = 0; + atomic_set(&f->mem, 0); + +} +EXPORT_SYMBOL(inet_frags_init); + +void inet_frags_fini(struct inet_frags *f) +{ +} +EXPORT_SYMBOL(inet_frags_fini); -- cgit v1.2.3