From: Nicolas Dichtel nicolas.dichtel@6wind.com
commit 3b0dc529f56b5f2328244130683210be98f16f7f upstream.
When routes corresponding to addresses are restored by fixup_permanent_addr(), the dst_nopolicy parameter was not set. The typical use case is a user that configures an address on a down interface and then put this interface up.
Let's take care of this flag in addrconf_f6i_alloc(), so that every callers benefit ont it.
CC: stable@kernel.org CC: David Forster dforster@brocade.com Fixes: df789fe75206 ("ipv6: Provide ipv6 version of "disable_policy" sysctl") Reported-by: Siwar Zitouni siwar.zitouni@6wind.com Signed-off-by: Nicolas Dichtel nicolas.dichtel@6wind.com Reviewed-by: David Ahern dsahern@kernel.org Link: https://lore.kernel.org/r/20220623120015.32640-1-nicolas.dichtel@6wind.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv6/addrconf.c | 4 ---- net/ipv6/route.c | 9 ++++++++- 2 files changed, 8 insertions(+), 5 deletions(-)
--- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1102,10 +1102,6 @@ ipv6_add_addr(struct inet6_dev *idev, st goto out; }
- if (net->ipv6.devconf_all->disable_policy || - idev->cnf.disable_policy) - f6i->dst_nopolicy = true; - neigh_parms_data_state_setall(idev->nd_parms);
ifa->addr = *cfg->pfx; --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -4483,8 +4483,15 @@ struct fib6_info *addrconf_f6i_alloc(str }
f6i = ip6_route_info_create(&cfg, gfp_flags, NULL); - if (!IS_ERR(f6i)) + if (!IS_ERR(f6i)) { f6i->dst_nocount = true; + + if (!anycast && + (net->ipv6.devconf_all->disable_policy || + idev->cnf.disable_policy)) + f6i->dst_nopolicy = true; + } + return f6i; }