FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-14 21:01:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

netfilter: xt_cluster: add dependency on conntrack module

Browse Source 
The cluster match requires conntrack for matching packets. If the
netns does not have conntrack hooks registered, the match does not
work at all.

Implicitly load the conntrack hook for the family, exactly as many
other extensions do. This ensures that the match works even if the
hooks have not been registered by other means.

Signed-off-by: Martin Willi <martin@strongswan.org>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Martin Willi 2018-08-22 10:27:17 +02:00 committed by Pablo Neira Ayuso
parent 444c826315
commit c1dc291205
1 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
net/netfilter/xt_cluster.c
View File

@ -125,6 +125,7 @@ xt_cluster_mt(const struct sk_buff *skb, struct xt_action_param *par)
static int xt_cluster_mt_checkentry(const struct xt_mtchk_param *par)
{
struct xt_cluster_match_info *info = par->matchinfo;
int ret;
if (info->total_nodes > XT_CLUSTER_NODES_MAX) {
pr_info_ratelimited("you have exceeded the maximum number of cluster nodes (%u > %u)\n",
@ -135,7 +136,17 @@ static int xt_cluster_mt_checkentry(const struct xt_mtchk_param *par)
pr_info_ratelimited("node mask cannot exceed total number of nodes\n");
return -EDOM;
}
return 0;
ret = nf_ct_netns_get(par->net, par->family);
if (ret < 0)
pr_info_ratelimited("cannot load conntrack support for proto=%u\n",
par->family);
return ret;
}
static void xt_cluster_mt_destroy(const struct xt_mtdtor_param *par)
{
nf_ct_netns_put(par->net, par->family);
}
static struct xt_match xt_cluster_match __read_mostly = {
@ -144,6 +155,7 @@ static struct xt_match xt_cluster_match __read_mostly = {
.match = xt_cluster_mt,
.checkentry = xt_cluster_mt_checkentry,
.matchsize = sizeof(struct xt_cluster_match_info),
.destroy = xt_cluster_mt_destroy,
.me = THIS_MODULE,
};