[Devel] [PATCH RH8] net: export "net/*/neigh/*/*" sysctls for Container

[Vasily Averin]

Weave Kubernetes plugin requires tuning of
/proc/sys/net/ipv4/neigh/weave/base_reachable_time in particular,

so let's export neighbour sysctls as well.

https://jira.sw.ru/browse/PSBM-92107

Signed-off-by: Konstantin Khorenko <khorenko at virtuozzo.com>
(cherry picked from vz7 commit 8499e3458f18a051247acce653a1e266d9c5c109)
Signed-off-by: Vasily Averin <vvs at virtuozzo.com>
---
 net/core/neighbour.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 95090d1e8197..14458e50b99b 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -3589,8 +3589,8 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
 			neigh_proc_base_reachable_time;
 	}
 
-	/* Don't export sysctls to unprivileged users */
-	if (neigh_parms_net(p)->user_ns != &init_user_ns)
+	/* Export sysctls only to root userns on the host and inside a Container */
+	if (ve_net_hide_sysctl(neigh_parms_net(p)))
 		t->neigh_vars[0].procname = NULL;
 
 	switch (neigh_parms_family(p)) {
-- 
2.25.1