diff mbox series

[nf-next,v6,4/8] netfilter: nft_tunnel: support NFT_TUNNEL_IP6_SRC/DST match

Message ID 1568386990-29660-5-git-send-email-wenxu@ucloud.cn
State Changes Requested
Delegated to: Pablo Neira
Headers show
Series netfilter: nf_tables_offload: support tunnel offload | expand

Commit Message

wenxu Sept. 13, 2019, 3:03 p.m. UTC 
From: wenxu <wenxu@ucloud.cn>

Add new two NFT_TUNNEL_IP6_SRC/DST match in nft_tunnel

Signed-off-by: wenxu <wenxu@ucloud.cn>
---
 include/uapi/linux/netfilter/nf_tables.h |  2 ++
 net/netfilter/nft_tunnel.c               | 28 ++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
diff mbox series

Patch

diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index d459f49..da9b1d1 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -1775,6 +1775,8 @@  enum nft_tunnel_keys {
 	NFT_TUNNEL_ID,
 	NFT_TUNNEL_IP_SRC,
 	NFT_TUNNEL_IP_DST,
+	NFT_TUNNEL_IP6_SRC,
+	NFT_TUNNEL_IP6_DST,
 	__NFT_TUNNEL_MAX
 };
 #define NFT_TUNNEL_MAX	(__NFT_TUNNEL_MAX - 1)
diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c
index 3ca7d80..f128b28 100644
--- a/net/netfilter/nft_tunnel.c
+++ b/net/netfilter/nft_tunnel.c
@@ -96,6 +96,30 @@  static void nft_tunnel_get_eval(const struct nft_expr *expr,
 		else
 			regs->verdict.code = NFT_BREAK;
 		break;
+	case NFT_TUNNEL_IP6_SRC:
+		if (!tun_info) {
+			regs->verdict.code = NFT_BREAK;
+			return;
+		}
+		if (nft_tunnel_mode_validate(priv->mode, tun_info->mode,
+					     NFT_INET_IP6_TYPE))
+			memcpy(dest, &tun_info->key.u.ipv6.src,
+			       sizeof(struct in6_addr));
+		else
+			regs->verdict.code = NFT_BREAK;
+		break;
+	case NFT_TUNNEL_IP6_DST:
+		if (!tun_info) {
+			regs->verdict.code = NFT_BREAK;
+			return;
+		}
+		if (nft_tunnel_mode_validate(priv->mode, tun_info->mode,
+					     NFT_INET_IP6_TYPE))
+			memcpy(dest, &tun_info->key.u.ipv6.dst,
+			       sizeof(struct in6_addr));
+		else
+			regs->verdict.code = NFT_BREAK;
+		break;
 	default:
 		WARN_ON(1);
 		regs->verdict.code = NFT_BREAK;
@@ -129,6 +153,10 @@  static int nft_tunnel_get_init(const struct nft_ctx *ctx,
 	case NFT_TUNNEL_IP_DST:
 		len = sizeof(u32);
 		break;
+	case NFT_TUNNEL_IP6_SRC:
+	case NFT_TUNNEL_IP6_DST:
+		len = sizeof(struct in6_addr);
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}