From: Patrick McHardy Date: Tue, 25 Dec 2007 05:09:10 +0000 (-0800) Subject: [NETFILTER]: nf_conntrack_ipv4: fix module parameter compatibility X-Git-Tag: v2.6.24-rc7~32^2~4 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fae718ddaf2b00e222dddec6717aca023376723c;p=linux-2.6 [NETFILTER]: nf_conntrack_ipv4: fix module parameter compatibility Some users do "modprobe ip_conntrack hashsize=...". Since we have the module aliases this loads nf_conntrack_ipv4 and nf_conntrack, the hashsize parameter is unknown for nf_conntrack_ipv4 however and makes it fail. Allow to specify hashsize= for both nf_conntrack and nf_conntrack_ipv4. Note: the nf_conntrack message in the ringbuffer will display an incorrect hashsize since nf_conntrack is first pulled in as a dependency and calculates the size itself, then it gets changed through a call to nf_conntrack_set_hashsize(). Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h index 90fb66d99d..4ac5ab187c 100644 --- a/include/net/netfilter/nf_conntrack.h +++ b/include/net/netfilter/nf_conntrack.h @@ -249,6 +249,7 @@ static inline int nf_ct_is_untracked(const struct sk_buff *skb) return (skb->nfct == &nf_conntrack_untracked.ct_general); } +extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp); extern unsigned int nf_conntrack_htable_size; extern int nf_conntrack_checksum; extern atomic_t nf_conntrack_count; diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 831e9b2980..910dae732a 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -419,6 +419,9 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = { .me = THIS_MODULE, }; +module_param_call(hashsize, nf_conntrack_set_hashsize, param_get_uint, + &nf_conntrack_htable_size, 0600); + MODULE_ALIAS("nf_conntrack-" __stringify(AF_INET)); MODULE_ALIAS("ip_conntrack"); MODULE_LICENSE("GPL"); diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 000c2fb462..a4d5cdeb01 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -1016,7 +1016,7 @@ struct hlist_head *nf_ct_alloc_hashtable(int *sizep, int *vmalloced) } EXPORT_SYMBOL_GPL(nf_ct_alloc_hashtable); -int set_hashsize(const char *val, struct kernel_param *kp) +int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp) { int i, bucket, hashsize, vmalloced; int old_vmalloced, old_size; @@ -1063,8 +1063,9 @@ int set_hashsize(const char *val, struct kernel_param *kp) nf_ct_free_hashtable(old_hash, old_vmalloced, old_size); return 0; } +EXPORT_SYMBOL_GPL(nf_conntrack_set_hashsize); -module_param_call(hashsize, set_hashsize, param_get_uint, +module_param_call(hashsize, nf_conntrack_set_hashsize, param_get_uint, &nf_conntrack_htable_size, 0600); int __init nf_conntrack_init(void)