ipv6 addrlabel: permit deletion of labels assigned to removed dev
as addrlabels with an interface index are left alone when the interface gets removed this results in addrlabels that can no longer be removed. Restrict validation of index to adding new addrlabels. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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Родитель
6811d58fc1
Коммит
0771275b25
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@ -422,10 +422,6 @@ static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh,
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ifal->ifal_prefixlen > 128)
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return -EINVAL;
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if (ifal->ifal_index &&
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!__dev_get_by_index(net, ifal->ifal_index))
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return -EINVAL;
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if (!tb[IFAL_ADDRESS])
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return -EINVAL;
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@ -441,6 +437,10 @@ static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh,
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switch(nlh->nlmsg_type) {
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case RTM_NEWADDRLABEL:
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if (ifal->ifal_index &&
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!__dev_get_by_index(net, ifal->ifal_index))
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return -EINVAL;
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err = ip6addrlbl_add(net, pfx, ifal->ifal_prefixlen,
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ifal->ifal_index, label,
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nlh->nlmsg_flags & NLM_F_REPLACE);
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