diff options
| author |   Patrick McHardy <kaber@trash.net> | 2010-07-02 09:32:57 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2010-07-02 09:32:57 +0200 |
| commit | 4df53d8bab65cf2c18daebd51a5a4847e03f1943 (patch) | |
| tree | f776c088d9d525672eac2e95ef1d183e52d88837 /net/bridge/br_netfilter.c | |
| parent | netfilter: ipt_LOG/ip6t_LOG: add option to print decoded MAC header (diff) | |
| download | linux-dev-4df53d8bab65cf2c18daebd51a5a4847e03f1943.tar.xz linux-dev-4df53d8bab65cf2c18daebd51a5a4847e03f1943.zip | |
bridge: add per bridge device controls for invoking iptables
Support more fine grained control of bridge netfilter iptables invocation
by adding seperate brnf_call_*tables parameters for each device using the
sysfs interface. Packets are passed to layer 3 netfilter when either the
global parameter or the per bridge parameter is enabled.
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/bridge/br_netfilter.c')
| -rw-r--r-- | net/bridge/br_netfilter.c | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index 6bb6f7c9e6e1..f1d49ae23411 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -55,6 +55,9 @@ static int brnf_call_arptables __read_mostly = 1; static int brnf_filter_vlan_tagged __read_mostly = 0; static int brnf_filter_pppoe_tagged __read_mostly = 0; #else +#define brnf_call_iptables 1 +#define brnf_call_ip6tables 1 +#define brnf_call_arptables 1 #define brnf_filter_vlan_tagged 0 #define brnf_filter_pppoe_tagged 0 #endif @@ -543,25 +546,30 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff *skb, const struct net_device *out, int (*okfn)(struct sk_buff *)) { + struct net_bridge_port *p; + struct net_bridge *br; struct iphdr *iph; __u32 len = nf_bridge_encap_header_len(skb); if (unlikely(!pskb_may_pull(skb, len))) goto out; + p = rcu_dereference(in->br_port); + if (p == NULL) + goto out; + br = p->br; + if (skb->protocol == htons(ETH_P_IPV6) || IS_VLAN_IPV6(skb) || IS_PPPOE_IPV6(skb)) { -#ifdef CONFIG_SYSCTL - if (!brnf_call_ip6tables) + if (!brnf_call_ip6tables && !br->nf_call_ip6tables) return NF_ACCEPT; -#endif + nf_bridge_pull_encap_header_rcsum(skb); return br_nf_pre_routing_ipv6(hook, skb, in, out, okfn); } -#ifdef CONFIG_SYSCTL - if (!brnf_call_iptables) + + if (!brnf_call_iptables && !br->nf_call_iptables) return NF_ACCEPT; -#endif if (skb->protocol != htons(ETH_P_IP) && !IS_VLAN_IP(skb) && !IS_PPPOE_IP(skb)) @@ -714,12 +722,17 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff *skb, const struct net_device *out, int (*okfn)(struct sk_buff *)) { + struct net_bridge_port *p; + struct net_bridge *br; struct net_device **d = (struct net_device **)(skb->cb); -#ifdef CONFIG_SYSCTL - if (!brnf_call_arptables) + p = rcu_dereference(out->br_port); + if (p == NULL) + return NF_ACCEPT; + br = p->br; + + if (!brnf_call_arptables && !br->nf_call_arptables) return NF_ACCEPT; -#endif if (skb->protocol != htons(ETH_P_ARP)) { if (!IS_VLAN_ARP(skb)) |