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Commit f24c5987 authored by Sabrina Dubroca's avatar Sabrina Dubroca Committed by David S. Miller
Browse files

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: d35a00b8 ("net/ipv6: allow sysctl to change link-local address generation mode")
Suggested-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bdd72f41

net/ipv6/addrconf.c

+12 −0
Original line number Diff line number Diff line
@@ -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;