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authorPavel Emelyanov <xemul@openvz.org>2007-10-15 02:31:52 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-15 12:26:39 -0700
commit7eb95156d9dce2f59794264db336ce007d71638b (patch)
treec283a095f1a9d530edb1a7058454ba30b4f7d028 /include
parent5ab11c98d3a950faf6922b6166e5f8fc874590e7 (diff)
downloadlinux-7eb95156d9dce2f59794264db336ce007d71638b.tar.bz2
[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 <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/inet_frag.h15
-rw-r--r--include/net/ip.h4
-rw-r--r--include/net/ipv6.h4
3 files changed, 19 insertions, 4 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 74e9cb9b6943..d51f23873da9 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -18,4 +18,19 @@ struct inet_frag_queue {
#define LAST_IN 1
};
+#define INETFRAGS_HASHSZ 64
+
+struct inet_frags {
+ struct list_head lru_list;
+ struct hlist_head hash[INETFRAGS_HASHSZ];
+ rwlock_t lock;
+ u32 rnd;
+ int nqueues;
+ atomic_t mem;
+ struct timer_list secret_timer;
+};
+
+void inet_frags_init(struct inet_frags *);
+void inet_frags_fini(struct inet_frags *);
+
#endif
diff --git a/include/net/ip.h b/include/net/ip.h
index 875c5ed53343..c08c59e2384c 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -333,8 +333,8 @@ enum ip_defrag_users
};
int ip_defrag(struct sk_buff *skb, u32 user);
-extern int ip_frag_nqueues;
-extern atomic_t ip_frag_mem;
+int ip_frag_mem(void);
+int ip_frag_nqueues(void);
/*
* Functions provided by ip_forward.c
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 31b3f1b45a2b..77cdab3ce160 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -252,8 +252,8 @@ struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
extern int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb);
-extern int ip6_frag_nqueues;
-extern atomic_t ip6_frag_mem;
+int ip6_frag_nqueues(void);
+int ip6_frag_mem(void);
#define IPV6_FRAG_TIMEOUT (60*HZ) /* 60 seconds */