diff options
| author |   Eric W. Biederman <ebiederm@xmission.com> | 2015-07-10 18:13:58 -0500 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2015-07-15 17:51:43 +0200 |
| commit | 4c0911566dec7755d15cb89239fb2db4447f7a62 (patch) | |
| tree | 73aab52ccf78e2b1592c335b69bed499aea6fa93 /net/netfilter/core.c | |
| parent | netfilter: kill nf_hooks_active (diff) | |
| download | wireguard-linux-4c0911566dec7755d15cb89239fb2db4447f7a62.tar.xz wireguard-linux-4c0911566dec7755d15cb89239fb2db4447f7a62.zip | |
netfilter: Simply the tests for enabling and disabling the ingress queue hook
Replace an overcomplicated switch statement with a simple if statement.
This also removes the ingress queue enable outside of nf_hook_mutex as
the protection provided by the mutex is not necessary and the code is
clearer having both of the static key increments together.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/core.c')
| -rw-r--r-- | net/netfilter/core.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/net/netfilter/core.c b/net/netfilter/core.c index a0e54974e2c9..c4c3b85a2538 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -74,7 +74,6 @@ int nf_register_hook(struct nf_hook_ops *reg) if (reg->hooknum == NF_NETDEV_INGRESS) { BUG_ON(reg->dev == NULL); nf_hook_list = ®->dev->nf_hooks_ingress; - net_inc_ingress_queue(); break; } #endif @@ -90,6 +89,10 @@ int nf_register_hook(struct nf_hook_ops *reg) } list_add_rcu(®->list, elem->list.prev); mutex_unlock(&nf_hook_mutex); +#ifdef CONFIG_NETFILTER_INGRESS + if (reg->pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS) + net_inc_ingress_queue(); +#endif #ifdef HAVE_JUMP_LABEL static_key_slow_inc(&nf_hooks_needed[reg->pf][reg->hooknum]); #endif @@ -102,18 +105,10 @@ void nf_unregister_hook(struct nf_hook_ops *reg) mutex_lock(&nf_hook_mutex); list_del_rcu(®->list); mutex_unlock(&nf_hook_mutex); - switch (reg->pf) { - case NFPROTO_NETDEV: #ifdef CONFIG_NETFILTER_INGRESS - if (reg->hooknum == NF_NETDEV_INGRESS) { - net_dec_ingress_queue(); - break; - } - break; + if (reg->pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS) + net_dec_ingress_queue(); #endif - default: - break; - } #ifdef HAVE_JUMP_LABEL static_key_slow_dec(&nf_hooks_needed[reg->pf][reg->hooknum]); #endif |