Enable conntrack if the user defines a helper to be used from the
ruleset policy.
Fixes: 1a64edf54f55 ("netfilter: nft_ct: add helper set support")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
net/netfilter/nft_ct.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c
index 4788458a0931..4855d4ce1c8f 100644
--- a/net/netfilter/nft_ct.c
+++ b/net/netfilter/nft_ct.c
@@ -963,6 +963,7 @@ static int nft_ct_helper_obj_init(const struct nft_ctx *ctx,
struct nf_conntrack_helper *help4, *help6;
char name[NF_CT_HELPER_NAME_LEN];
int family = ctx->family;
+ int err;
if (!tb[NFTA_CT_HELPER_NAME] || !tb[NFTA_CT_HELPER_L4PROTO])
return -EINVAL;
@@ -1013,7 +1014,18 @@ static int nft_ct_helper_obj_init(const struct nft_ctx *ctx,
priv->helper4 = help4;
priv->helper6 = help6;
+ err = nf_ct_netns_get(ctx->net, ctx->family);
+ if (err < 0)
+ goto err_put_helper;
+
return 0;
+
+err_put_helper:
+ if (priv->helper4)
+ nf_conntrack_helper_put(priv->helper4);
+ if (priv->helper6)
+ nf_conntrack_helper_put(priv->helper6);
+ return err;
}
static void nft_ct_helper_obj_destroy(const struct nft_ctx *ctx,
@@ -1025,6 +1037,8 @@ static void nft_ct_helper_obj_destroy(const struct nft_ctx *ctx,
nf_conntrack_helper_put(priv->helper4);
if (priv->helper6)
nf_conntrack_helper_put(priv->helper6);
+
+ nf_ct_netns_put(ctx->net, ctx->family);
}
static void nft_ct_helper_obj_eval(struct nft_object *obj,
--
2.11.0
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