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netfilter: nft_meta_bridge: Add NFT_META_BRI_IIFVPROTO support

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This patch allows you to match on bridge vlan protocol, eg.

nft add rule bridge firewall zones counter meta ibrvproto 0x8100

Signed-off-by: wenxu <wenxu@ucloud.cn>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
wenxu 2019-07-05 21:16:37 +08:00 committed by Pablo Neira Ayuso
parent 31aed46fed
commit 2a3a93ef0b
2 changed files with 14 additions and 0 deletions
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2
include/uapi/linux/netfilter/nf_tables.h
View File

@ -796,6 +796,7 @@ enum nft_exthdr_attributes {
* @NFT_META_IIFKIND: packet input interface kind name (dev->rtnl_link_ops->kind)
* @NFT_META_OIFKIND: packet output interface kind name (dev->rtnl_link_ops->kind)
* @NFT_META_BRI_IIFPVID: packet input bridge port pvid
* @NFT_META_BRI_IIFVPROTO: packet input bridge vlan proto
*/
enum nft_meta_keys {
NFT_META_LEN,
@ -827,6 +828,7 @@ enum nft_meta_keys {
NFT_META_IIFKIND,
NFT_META_OIFKIND,
NFT_META_BRI_IIFPVID,
NFT_META_BRI_IIFVPROTO,
};
/**

12
net/bridge/netfilter/nft_meta_bridge.c
View File

@ -49,6 +49,17 @@ static void nft_meta_bridge_get_eval(const struct nft_expr *expr,
nft_reg_store16(dest, p_pvid);
return;
}
case NFT_META_BRI_IIFVPROTO: {
u16 p_proto;
br_dev = nft_meta_get_bridge(in);
if (!br_dev || !br_vlan_enabled(br_dev))
goto err;
br_vlan_get_proto(br_dev, &p_proto);
nft_reg_store16(dest, p_proto);
return;
}
default:
goto out;
}
@ -75,6 +86,7 @@ static int nft_meta_bridge_get_init(const struct nft_ctx *ctx,
len = IFNAMSIZ;
break;
case NFT_META_BRI_IIFPVID:
case NFT_META_BRI_IIFVPROTO:
len = sizeof(u16);
break;
default: