net/ipv6: propagate net.ipv6.conf.all.addr_gen_mode to devices (f24c5987) · Commits · 戴 / test

This aligns the addr_gen_mode sysctl with the expected behavior of the "all" variant. Fixes: ("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>

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;

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