From 3045d76070abe725dbb7fd8ff39c27b820d5a7eb Mon Sep 17 00:00:00 2001 From: Ana Rey Date: Tue, 2 Sep 2014 20:36:14 +0200 Subject: netfilter: nf_tables: add devgroup support in meta expresion Add devgroup support to let us match device group of a packets incoming or outgoing interface. Signed-off-by: Ana Rey Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/nf_tables.h | 4 ++++ net/netfilter/nft_meta.c | 12 ++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index c9b6f00..c000947 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -573,6 +573,8 @@ enum nft_exthdr_attributes { * @NFT_META_BRI_OIFNAME: packet output bridge interface name * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback * @NFT_META_CPU: cpu id through smp_processor_id() + * @NFT_META_IIFGROUP: packet input interface group + * @NFT_META_OIFGROUP: packet output interface group */ enum nft_meta_keys { NFT_META_LEN, @@ -596,6 +598,8 @@ enum nft_meta_keys { NFT_META_BRI_OIFNAME, NFT_META_PKTTYPE, NFT_META_CPU, + NFT_META_IIFGROUP, + NFT_META_OIFGROUP, }; /** diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c index 843e099..1e7c076 100644 --- a/net/netfilter/nft_meta.c +++ b/net/netfilter/nft_meta.c @@ -155,6 +155,16 @@ void nft_meta_get_eval(const struct nft_expr *expr, case NFT_META_CPU: dest->data[0] = smp_processor_id(); break; + case NFT_META_IIFGROUP: + if (in == NULL) + goto err; + dest->data[0] = in->group; + break; + case NFT_META_OIFGROUP: + if (out == NULL) + goto err; + dest->data[0] = out->group; + break; default: WARN_ON(1); goto err; @@ -228,6 +238,8 @@ int nft_meta_get_init(const struct nft_ctx *ctx, #endif case NFT_META_PKTTYPE: case NFT_META_CPU: + case NFT_META_IIFGROUP: + case NFT_META_OIFGROUP: break; default: return -EOPNOTSUPP; -- cgit v1.1