diff options
| author | Henry Yen <henry.yen@mediatek.com> | 2019-01-14 17:59:43 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-27 10:08:55 +0100 |
| commit | 73aa8292cabad4f09ccd8cecf8adc9fd4abf2f8e (patch) | |
| tree | ba73fe27693dc8f866024922007769f46dc884a7 /net/netfilter/nft_flow_offload.c | |
| parent | 4c3b23e90307d42ca2e6ae3211ecf9b7e61a5004 (diff) | |
netfilter: nft_flow_offload: fix checking method of conntrack helper
[ Upstream commit 2314e879747e82896f51cce4488f6a00f3e1af7b ]
This patch uses nfct_help() to detect whether an established connection
needs conntrack helper instead of using test_bit(IPS_HELPER_BIT,
&ct->status).
The reason is that IPS_HELPER_BIT is only set when using explicit CT
target.
However, in the case that a device enables conntrack helper via command
"echo 1 > /proc/sys/net/netfilter/nf_conntrack_helper", the status of
IPS_HELPER_BIT will not present any change, and consequently it loses
the checking ability in the context.
Signed-off-by: Henry Yen <henry.yen@mediatek.com>
Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Tested-by: John Crispin <john@phrozen.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/netfilter/nft_flow_offload.c')
| -rw-r--r-- | net/netfilter/nft_flow_offload.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c index 4d7cf943fff2..436cc14cfc59 100644 --- a/net/netfilter/nft_flow_offload.c +++ b/net/netfilter/nft_flow_offload.c @@ -12,6 +12,7 @@ #include <net/netfilter/nf_conntrack_core.h> #include <linux/netfilter/nf_conntrack_common.h> #include <net/netfilter/nf_flow_table.h> +#include <net/netfilter/nf_conntrack_helper.h> struct nft_flow_offload { struct nft_flowtable *flowtable; @@ -66,6 +67,7 @@ static void nft_flow_offload_eval(const struct nft_expr *expr, { struct nft_flow_offload *priv = nft_expr_priv(expr); struct nf_flowtable *flowtable = &priv->flowtable->data; + const struct nf_conn_help *help; enum ip_conntrack_info ctinfo; struct nf_flow_route route; struct flow_offload *flow; @@ -88,7 +90,8 @@ static void nft_flow_offload_eval(const struct nft_expr *expr, goto out; } - if (test_bit(IPS_HELPER_BIT, &ct->status)) + help = nfct_help(ct); + if (help) goto out; if (ctinfo == IP_CT_NEW || |