diff mbox

netfilter: nf_tables: Add cpu attribute support to meta expresion.

Message ID 1407394858-26841-2-git-send-email-anarey@gmail.com
State Accepted
Delegated to: Pablo Neira
Headers show

Commit Message

Ana Rey Aug. 7, 2014, 7 a.m. UTC 
Add cpu support to meta expresion.

This allows you to match packets with cpu number.

Signed-off-by: Ana Rey <anarey@gmail.com>
---
 include/uapi/linux/netfilter/nf_tables.h |    2 ++
 net/netfilter/nft_meta.c                 |    5 +++++
 2 files changed, 7 insertions(+)

Comments

Pablo Neira Ayuso Aug. 24, 2014, 12:55 p.m. UTC | #1 
On Thu, Aug 07, 2014 at 09:00:56AM +0200, Ana Rey wrote:
> Add cpu support to meta expresion.
> 
> This allows you to match packets with cpu number.

Applied, thanks.

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diff mbox

Patch

diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index 72ad208..67218f3 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -572,6 +572,7 @@  enum nft_exthdr_attributes {
  * @NFT_META_BRI_IIFNAME: packet input bridge interface name
  * @NFT_META_BRI_OIFNAME: packet output bridge interface name
  * @NFT_META_PKTTYPE: Packet type
+ * @NFT_META_CPU: Packet cpu
  */
 enum nft_meta_keys {
 	NFT_META_LEN,
@@ -594,6 +595,7 @@  enum nft_meta_keys {
 	NFT_META_BRI_IIFNAME,
 	NFT_META_BRI_OIFNAME,
 	NFT_META_PKTTYPE,
+	NFT_META_CPU,
 };
 
 /**
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index dbf7fe1..34a587e 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -17,6 +17,7 @@ 
 #include <linux/in.h>
 #include <linux/ip.h>
 #include <linux/ipv6.h>
+#include <linux/smp.h>
 #include <net/dst.h>
 #include <net/sock.h>
 #include <net/tcp_states.h> /* for TCP_TIME_WAIT */
@@ -150,6 +151,9 @@  void nft_meta_get_eval(const struct nft_expr *expr,
 			goto err;
 		}
 		break;
+	case NFT_META_CPU:
+		dest->data[0] = smp_processor_id();
+		break;
 	default:
 		WARN_ON(1);
 		goto err;
@@ -222,6 +226,7 @@  int nft_meta_get_init(const struct nft_ctx *ctx,
 	case NFT_META_SECMARK:
 #endif
 	case NFT_META_PKTTYPE:
+	case NFT_META_CPU:
 		break;
 	default:
 		return -EOPNOTSUPP;