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netfilter: nft_tunnel: Add dst_cache support

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The metadata_dst does not initialize the dst_cache field, this causes
problems to ip_md_tunnel_xmit() since it cannot use this cache, hence,
Triggering a route lookup for every packet.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
wenxu 2019-02-22 17:00:43 +08:00 committed by Pablo Neira Ayuso
parent be0502a3f2
commit 3e511d5652
1 changed files with 7 additions and 0 deletions
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7
net/netfilter/nft_tunnel.c
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@ -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;