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From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 09/17] netfilter: nft_meta: add cgroup support
Date: Mon, 24 Nov 2014 14:27:46 +0100	[thread overview]
Message-ID: <1416835674-11871-10-git-send-email-pablo@netfilter.org> (raw)
In-Reply-To: <1416835674-11871-1-git-send-email-pablo@netfilter.org>

From: Ana Rey <anarey@gmail.com>

This allows you to filter traffic by process control group (cgroup).

Signed-off-by: Ana Rey <anarey@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 include/uapi/linux/netfilter/nf_tables.h |    2 ++
 net/netfilter/nft_meta.c                 |    7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index 16f62a5..832bc46 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -579,6 +579,7 @@ enum nft_exthdr_attributes {
  * @NFT_META_CPU: cpu id through smp_processor_id()
  * @NFT_META_IIFGROUP: packet input interface group
  * @NFT_META_OIFGROUP: packet output interface group
+ * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
  */
 enum nft_meta_keys {
 	NFT_META_LEN,
@@ -604,6 +605,7 @@ enum nft_meta_keys {
 	NFT_META_CPU,
 	NFT_META_IIFGROUP,
 	NFT_META_OIFGROUP,
+	NFT_META_CGROUP,
 };
 
 /**
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index 1e7c076..e99911e 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -165,6 +165,12 @@ void nft_meta_get_eval(const struct nft_expr *expr,
 			goto err;
 		dest->data[0] = out->group;
 		break;
+	case NFT_META_CGROUP:
+		if (skb->sk == NULL)
+			break;
+
+		dest->data[0] = skb->sk->sk_classid;
+		break;
 	default:
 		WARN_ON(1);
 		goto err;
@@ -240,6 +246,7 @@ int nft_meta_get_init(const struct nft_ctx *ctx,
 	case NFT_META_CPU:
 	case NFT_META_IIFGROUP:
 	case NFT_META_OIFGROUP:
+	case NFT_META_CGROUP:
 		break;
 	default:
 		return -EOPNOTSUPP;
-- 
1.7.10.4

  parent reply	other threads:[~2014-11-24 13:27 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-24 13:27 [PATCH 00/17] netfilter/ipvs updates for net-next Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 01/17] netfilter: refactor NAT redirect IPv4 to use it from nf_tables Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 02/17] netfilter: refactor NAT redirect IPv6 code " Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 03/17] netfilter: nf_tables: add new expression nft_redir Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 04/17] ipvs: remove unnecessary assignment in __ip_vs_get_out_rt Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 05/17] netfilter: nf_log: Introduce nft_log_dereference() macro Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 06/17] netfilter: log: protect nf_log_register against double registering Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 07/17] netfilter: fix spelling errors Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 08/17] netfilter: nf_log: fix sparse warning in nf_logger_find_get() Pablo Neira Ayuso
2014-11-24 13:27 ` Pablo Neira Ayuso [this message]
2014-11-24 13:27 ` [PATCH 10/17] netfilter: fix unmet dependencies in NETFILTER_XT_TARGET_REDIRECT Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 11/17] netfilter: nft_redir: fix sparse warnings Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 12/17] netfilter: fix various " Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 13/17] netfilter: nfnetlink_log: remove unnecessary error messages Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 14/17] netfilter: xt_connlimit: honor conntrack zone if available Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 15/17] netfilter: nf_conntrack_h323: lookup route from proper net namespace Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 16/17] netfilter: Deletion of unnecessary checks before two function calls Pablo Neira Ayuso
2014-11-24 13:27 ` [PATCH 17/17] netfilter: nfnetlink_log: Make use of pr_fmt where applicable Pablo Neira Ayuso
2014-11-24 21:01 ` [PATCH 00/17] netfilter/ipvs updates for net-next David Miller

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