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Date:   Fri, 22 Feb 2019 16:26:59 +0800
From:   wenxu@...oud.cn
To:     pablo@...filter.org
Cc:     netdev@...r.kernel.org
Subject: [PATCH net-next] netfilter: nft_tunnel: Add dst_cache support

From: wenxu <wenxu@...oud.cn>

The metadata_dst is not init the dst_cache which make the
ip_md_tunnel_xmit can't use the dst_cache. It will lookup
route table every packets.

Signed-off-by: wenxu <wenxu@...oud.cn>
---
 net/netfilter/nft_tunnel.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/net/netfilter/nft_tunnel.c b/net/netfilter/nft_tunnel.c
index ea28588..b113fca 100644
--- a/net/netfilter/nft_tunnel.c
+++ b/net/netfilter/nft_tunnel.c
@@ -406,6 +406,13 @@ static int nft_tunnel_obj_init(const struct nft_ctx *ctx,
 		return -ENOMEM;
 
 	memcpy(&md->u.tun_info, &info, sizeof(info));
+#ifdef CONFIG_DST_CACHE
+	err = dst_cache_init(&md->u.tun_info.dst_cache, GFP_KERNEL);
+	if (err < 0) {
+		metadata_dst_free(md);
+		return err;
+	}
+#endif
 	ip_tunnel_info_opts_set(&md->u.tun_info, &priv->opts.u, priv->opts.len,
 				priv->opts.flags);
 	priv->md = md;
-- 
1.8.3.1

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