ipv6: propagate ipv6_add_dev's error returns out of ipv6_find_idev
Currently, ipv6_find_idev returns NULL when ipv6_add_dev fails,
ignoring the specific error value. This results in addrconf_add_dev
returning ENOBUFS in all cases, which is unfortunate in cases such as:
# ip link add dummyX type dummy
# ip link set dummyX mtu 1200 up
# ip addr add 2000::/64 dev dummyX
RTNETLINK answers: No buffer space available
Commit a317a2f19d
("ipv6: fail early when creating netdev named all
or default") introduced error returns in ipv6_add_dev. Before that,
that function would simply return NULL for all failures.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
f6edbf2d61
Коммит
db0b99f59a
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@ -478,7 +478,7 @@ static struct inet6_dev *ipv6_find_idev(struct net_device *dev)
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if (!idev) {
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idev = ipv6_add_dev(dev);
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if (IS_ERR(idev))
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return NULL;
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return idev;
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}
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if (dev->flags&IFF_UP)
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@ -2466,8 +2466,8 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
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ASSERT_RTNL();
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idev = ipv6_find_idev(dev);
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if (!idev)
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return ERR_PTR(-ENOBUFS);
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if (IS_ERR(idev))
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return idev;
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if (idev->cnf.disable_ipv6)
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return ERR_PTR(-EACCES);
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@ -3159,7 +3159,7 @@ static void init_loopback(struct net_device *dev)
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ASSERT_RTNL();
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idev = ipv6_find_idev(dev);
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if (!idev) {
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if (IS_ERR(idev)) {
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pr_debug("%s: add_dev failed\n", __func__);
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return;
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}
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@ -3374,7 +3374,7 @@ static void addrconf_sit_config(struct net_device *dev)
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*/
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idev = ipv6_find_idev(dev);
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if (!idev) {
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if (IS_ERR(idev)) {
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pr_debug("%s: add_dev failed\n", __func__);
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return;
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}
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@ -3399,7 +3399,7 @@ static void addrconf_gre_config(struct net_device *dev)
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ASSERT_RTNL();
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idev = ipv6_find_idev(dev);
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if (!idev) {
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if (IS_ERR(idev)) {
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pr_debug("%s: add_dev failed\n", __func__);
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return;
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}
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@ -4773,8 +4773,8 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh,
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IFA_F_MCAUTOJOIN | IFA_F_OPTIMISTIC;
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idev = ipv6_find_idev(dev);
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if (!idev)
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return -ENOBUFS;
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if (IS_ERR(idev))
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return PTR_ERR(idev);
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if (!ipv6_allow_optimistic_dad(net, idev))
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cfg.ifa_flags &= ~IFA_F_OPTIMISTIC;
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