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| author | Pavel Emelyanov <xemul@openvz.org> | 2007-10-15 02:31:52 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-15 12:26:39 -0700 |
| commit | 7eb95156d9dce2f59794264db336ce007d71638b (patch) | |
| tree | c283a095f1a9d530edb1a7058454ba30b4f7d028 /include/net | |
| parent | 5ab11c98d3a950faf6922b6166e5f8fc874590e7 (diff) | |
| download | linux-stable-7eb95156d9dce2f59794264db336ce007d71638b.tar.gz linux-stable-7eb95156d9dce2f59794264db336ce007d71638b.tar.bz2 linux-stable-7eb95156d9dce2f59794264db336ce007d71638b.zip | |
[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/net')
| -rw-r--r-- | include/net/inet_frag.h | 15 | ||||
| -rw-r--r-- | include/net/ip.h | 4 | ||||
| -rw-r--r-- | include/net/ipv6.h | 4 |
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 */ |