diff options
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_core.c | 4 | ||||
| -rw-r--r-- | net/netfilter/core.c | 9 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_core.c | 4 |
3 files changed, 10 insertions, 7 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c index 04e466d53c0b..508e6007a191 100644 --- a/net/ipv4/netfilter/ip_conntrack_core.c +++ b/net/ipv4/netfilter/ip_conntrack_core.c @@ -1354,7 +1354,7 @@ static void free_conntrack_hash(struct list_head *hash, int vmalloced,int size) supposed to kill the mall. */ void ip_conntrack_cleanup(void) { - ip_ct_attach = NULL; + rcu_assign_pointer(ip_ct_attach, NULL); /* This makes sure all current packets have passed through netfilter framework. Roll on, two-stage module @@ -1515,7 +1515,7 @@ int __init ip_conntrack_init(void) write_unlock_bh(&ip_conntrack_lock); /* For use by ipt_REJECT */ - ip_ct_attach = ip_conntrack_attach; + rcu_assign_pointer(ip_ct_attach, ip_conntrack_attach); /* Set up fake conntrack: - to never be deleted, not in any hashes */ diff --git a/net/netfilter/core.c b/net/netfilter/core.c index 291b8c6862f1..ad24d0c005e2 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -248,9 +248,12 @@ void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) { void (*attach)(struct sk_buff *, struct sk_buff *); - if (skb->nfct && (attach = ip_ct_attach) != NULL) { - mb(); /* Just to be sure: must be read before executing this */ - attach(new, skb); + if (skb->nfct) { + rcu_read_lock(); + attach = rcu_dereference(ip_ct_attach); + if (attach) + attach(new, skb); + rcu_read_unlock(); } } EXPORT_SYMBOL(nf_ct_attach); diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index 9b02ec4012fb..59bcab1d1084 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -1105,7 +1105,7 @@ void nf_conntrack_cleanup(void) { int i; - ip_ct_attach = NULL; + rcu_assign_pointer(ip_ct_attach, NULL); /* This makes sure all current packets have passed through netfilter framework. Roll on, two-stage module @@ -1273,7 +1273,7 @@ int __init nf_conntrack_init(void) write_unlock_bh(&nf_conntrack_lock); /* For use by REJECT target */ - ip_ct_attach = __nf_conntrack_attach; + rcu_assign_pointer(ip_ct_attach, __nf_conntrack_attach); /* Set up fake conntrack: - to never be deleted, not in any hashes */ |