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authorSabrina Dubroca <sd@queasysnail.net>2018-07-09 13:25:17 +0300
committerDavid S. Miller <davem@davemloft.net>2018-07-12 08:50:45 +0300
commitf24c5987dddd28b23443e7b21b55d47549207755 (patch)
treeebd3a72e1e6ea27d245660ce987b42573cffe37a /net/ipv6/addrconf.c
parentbdd72f41333d9f61a22e4c4494e95782e9731fdb (diff)
downloadlinux-f24c5987dddd28b23443e7b21b55d47549207755.tar.xz
net/ipv6: propagate net.ipv6.conf.all.addr_gen_mode to devices
This aligns the addr_gen_mode sysctl with the expected behavior of the "all" variant. Fixes: d35a00b8e33d ("net/ipv6: allow sysctl to change link-local address generation mode") Suggested-by: David Ahern <dsahern@gmail.com> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/addrconf.c')
-rw-r--r--net/ipv6/addrconf.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e89bca83e0e4..1659a6b3cf42 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -5926,6 +5926,18 @@ static int addrconf_sysctl_addr_gen_mode(struct ctl_table *ctl, int write,
idev->cnf.addr_gen_mode = new_val;
addrconf_dev_config(idev->dev);
}
+ } else if (&net->ipv6.devconf_all->addr_gen_mode == ctl->data) {
+ struct net_device *dev;
+
+ net->ipv6.devconf_dflt->addr_gen_mode = new_val;
+ for_each_netdev(net, dev) {
+ idev = __in6_dev_get(dev);
+ if (idev &&
+ idev->cnf.addr_gen_mode != new_val) {
+ idev->cnf.addr_gen_mode = new_val;
+ addrconf_dev_config(idev->dev);
+ }
+ }
}
*((u32 *)ctl->data) = new_val;