diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/netfilter/nf_nat_core.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c index c7a985fa30b..dd07362d2b8 100644 --- a/net/ipv4/netfilter/nf_nat_core.c +++ b/net/ipv4/netfilter/nf_nat_core.c @@ -31,7 +31,7 @@ #include <net/netfilter/nf_conntrack_l3proto.h> #include <net/netfilter/nf_conntrack_l4proto.h> -static DEFINE_RWLOCK(nf_nat_lock); +static DEFINE_SPINLOCK(nf_nat_lock); static struct nf_conntrack_l3proto *l3proto __read_mostly; @@ -330,12 +330,12 @@ nf_nat_setup_info(struct nf_conn *ct, unsigned int srchash; srchash = hash_by_src(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple); - write_lock_bh(&nf_nat_lock); + spin_lock_bh(&nf_nat_lock); /* nf_conntrack_alter_reply might re-allocate exntension aera */ nat = nfct_nat(ct); nat->ct = ct; hlist_add_head_rcu(&nat->bysource, &bysource[srchash]); - write_unlock_bh(&nf_nat_lock); + spin_unlock_bh(&nf_nat_lock); } /* It's done. */ @@ -521,14 +521,14 @@ int nf_nat_protocol_register(const struct nf_nat_protocol *proto) { int ret = 0; - write_lock_bh(&nf_nat_lock); + spin_lock_bh(&nf_nat_lock); if (nf_nat_protos[proto->protonum] != &nf_nat_unknown_protocol) { ret = -EBUSY; goto out; } rcu_assign_pointer(nf_nat_protos[proto->protonum], proto); out: - write_unlock_bh(&nf_nat_lock); + spin_unlock_bh(&nf_nat_lock); return ret; } EXPORT_SYMBOL(nf_nat_protocol_register); @@ -536,10 +536,10 @@ EXPORT_SYMBOL(nf_nat_protocol_register); /* Noone stores the protocol anywhere; simply delete it. */ void nf_nat_protocol_unregister(const struct nf_nat_protocol *proto) { - write_lock_bh(&nf_nat_lock); + spin_lock_bh(&nf_nat_lock); rcu_assign_pointer(nf_nat_protos[proto->protonum], &nf_nat_unknown_protocol); - write_unlock_bh(&nf_nat_lock); + spin_unlock_bh(&nf_nat_lock); synchronize_rcu(); } EXPORT_SYMBOL(nf_nat_protocol_unregister); @@ -594,10 +594,10 @@ static void nf_nat_cleanup_conntrack(struct nf_conn *ct) NF_CT_ASSERT(nat->ct->status & IPS_NAT_DONE_MASK); - write_lock_bh(&nf_nat_lock); + spin_lock_bh(&nf_nat_lock); hlist_del_rcu(&nat->bysource); nat->ct = NULL; - write_unlock_bh(&nf_nat_lock); + spin_unlock_bh(&nf_nat_lock); } static void nf_nat_move_storage(struct nf_conn *conntrack, void *old) @@ -609,10 +609,10 @@ static void nf_nat_move_storage(struct nf_conn *conntrack, void *old) if (!ct || !(ct->status & IPS_NAT_DONE_MASK)) return; - write_lock_bh(&nf_nat_lock); + spin_lock_bh(&nf_nat_lock); hlist_replace_rcu(&old_nat->bysource, &new_nat->bysource); new_nat->ct = ct; - write_unlock_bh(&nf_nat_lock); + spin_unlock_bh(&nf_nat_lock); } static struct nf_ct_ext_type nat_extend __read_mostly = { @@ -646,13 +646,13 @@ static int __init nf_nat_init(void) } /* Sew in builtin protocols. */ - write_lock_bh(&nf_nat_lock); + spin_lock_bh(&nf_nat_lock); for (i = 0; i < MAX_IP_NAT_PROTO; i++) rcu_assign_pointer(nf_nat_protos[i], &nf_nat_unknown_protocol); rcu_assign_pointer(nf_nat_protos[IPPROTO_TCP], &nf_nat_protocol_tcp); rcu_assign_pointer(nf_nat_protos[IPPROTO_UDP], &nf_nat_protocol_udp); rcu_assign_pointer(nf_nat_protos[IPPROTO_ICMP], &nf_nat_protocol_icmp); - write_unlock_bh(&nf_nat_lock); + spin_unlock_bh(&nf_nat_lock); /* Initialize fake conntrack so that NAT will skip it */ nf_conntrack_untracked.status |= IPS_NAT_DONE_MASK; |