netdev - [PATCH] ipv6: enable net.ipv6.route sysctls in network namespace

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Message-Id: <20210909111409.14425-1-wwfq@yandex-team.ru>
Date:   Thu,  9 Sep 2021 14:14:09 +0300
From:   Alexander Kuznetsov <wwfq@...dex-team.ru>
To:     netdev@...r.kernel.org
Cc:     zeil@...dex-team.ru
Subject: [PATCH] ipv6: enable net.ipv6.route sysctls in network namespace

We want to increase route cache size in network namespace
created with user namespace. Currently ipv6 route settings
are disabled for non-initial network namespaces.
Since routes are per network namespace it is safe
to enable these sysctls.

Signed-off-by: Alexander Kuznetsov <wwfq@...dex-team.ru>
Acked-by: Dmitry Yakunin <zeil@...dex-team.ru>
---
 net/ipv6/route.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index b6ddf23..de85e3b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -6415,10 +6415,6 @@ struct ctl_table * __net_init ipv6_route_sysctl_init(struct net *net)
 		table[8].data = &net->ipv6.sysctl.ip6_rt_min_advmss;
 		table[9].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;
 		table[10].data = &net->ipv6.sysctl.skip_notify_on_dev_down;
-
-		/* Don't export sysctls to unprivileged users */
-		if (net->user_ns != &init_user_ns)
-			table[0].procname = NULL;
 	}
 
 	return table;
-- 
2.7.4