From 93870cc02a0af4392401713d14235accafc752bc Mon Sep 17 00:00:00 2001 From: Nikolay Aleksandrov Date: Sun, 4 Oct 2015 14:23:46 +0200 Subject: [PATCH] bridge: netlink: add support for netfilter tables config Add support to allow getting/setting netfilter tables settings. Currently these are IFLA_BR_NF_CALL_IPTABLES, IFLA_BR_NF_CALL_IP6TABLES and IFLA_BR_NF_CALL_ARPTABLES. Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- include/uapi/linux/if_link.h | 3 +++ net/bridge/br_netlink.c | 37 +++++++++++++++++++++++++++++++++++- 2 files changed, 39 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index b8c88aa19fef..0200bed6e5d6 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -259,6 +259,9 @@ enum { IFLA_BR_MCAST_QUERY_INTVL, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, + IFLA_BR_NF_CALL_IPTABLES, + IFLA_BR_NF_CALL_IP6TABLES, + IFLA_BR_NF_CALL_ARPTABLES, __IFLA_BR_MAX, }; diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 30def4fb5901..fd37caf02b51 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -781,6 +781,9 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = { [IFLA_BR_MCAST_QUERY_INTVL] = { .type = NLA_U64 }, [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NLA_U64 }, [IFLA_BR_MCAST_STARTUP_QUERY_INTVL] = { .type = NLA_U64 }, + [IFLA_BR_NF_CALL_IPTABLES] = { .type = NLA_U8 }, + [IFLA_BR_NF_CALL_IP6TABLES] = { .type = NLA_U8 }, + [IFLA_BR_NF_CALL_ARPTABLES] = { .type = NLA_U8 }, }; static int br_changelink(struct net_device *brdev, struct nlattr *tb[], @@ -970,6 +973,25 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[], br->multicast_startup_query_interval = clock_t_to_jiffies(val); } #endif +#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) + if (data[IFLA_BR_NF_CALL_IPTABLES]) { + u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IPTABLES]); + + br->nf_call_iptables = val ? true : false; + } + + if (data[IFLA_BR_NF_CALL_IP6TABLES]) { + u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_IP6TABLES]); + + br->nf_call_ip6tables = val ? true : false; + } + + if (data[IFLA_BR_NF_CALL_ARPTABLES]) { + u8 val = nla_get_u8(data[IFLA_BR_NF_CALL_ARPTABLES]); + + br->nf_call_arptables = val ? true : false; + } +#endif return 0; } @@ -1013,6 +1035,11 @@ static size_t br_get_size(const struct net_device *brdev) nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_INTVL */ nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_QUERY_RESPONSE_INTVL */ nla_total_size(sizeof(u64)) + /* IFLA_BR_MCAST_STARTUP_QUERY_INTVL */ +#endif +#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) + nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IPTABLES */ + nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_IP6TABLES */ + nla_total_size(sizeof(u8)) + /* IFLA_BR_NF_CALL_ARPTABLES */ #endif 0; } @@ -1070,7 +1097,6 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) if (nla_put_be16(skb, IFLA_BR_VLAN_PROTOCOL, br->vlan_proto)) return -EMSGSIZE; #endif - #ifdef CONFIG_BRIDGE_IGMP_SNOOPING if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) || nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) || @@ -1105,6 +1131,15 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev) if (nla_put_u64(skb, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, clockval)) return -EMSGSIZE; #endif +#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) + if (nla_put_u8(skb, IFLA_BR_NF_CALL_IPTABLES, + br->nf_call_iptables ? 1 : 0) || + nla_put_u8(skb, IFLA_BR_NF_CALL_IP6TABLES, + br->nf_call_ip6tables ? 1 : 0) || + nla_put_u8(skb, IFLA_BR_NF_CALL_ARPTABLES, + br->nf_call_arptables ? 1 : 0)) + return -EMSGSIZE; +#endif return 0; } -- 2.20.1