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authorNicolas Dichtel <nicolas.dichtel@6wind.com>2022-06-23 15:00:15 +0300
committerJakub Kicinski <kuba@kernel.org>2022-06-28 08:24:30 +0300
commit3b0dc529f56b5f2328244130683210be98f16f7f (patch)
treea43c971de0d022fb42be84030143dadf65b4bca6 /net
parentce95ab775f8d8e89a038c0e5611a7381a2ef8e43 (diff)
downloadlinux-3b0dc529f56b5f2328244130683210be98f16f7f.tar.xz
ipv6: take care of disable_policy when restoring routes
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>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/addrconf.c4
-rw-r--r--net/ipv6/route.c9
2 files changed, 8 insertions, 5 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 1b1932502e9e..5864cbc30db6 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1109,10 +1109,6 @@ ipv6_add_addr(struct inet6_dev *idev, struct ifa6_config *cfg,
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;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index d25dc83bac62..828355710c57 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -4569,8 +4569,15 @@ struct fib6_info *addrconf_f6i_alloc(struct net *net,
}
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;
}