ipv6: addrconf: add missing validate_link_af handler
We still need a validate_link_af() handler with an appropriate nla policy, similarly as we have in IPv4 case, otherwise size validations are not being done properly in that case. Fixes:f53adae4ea
("net: ipv6: add tokenized interface identifier support") Fixes:bc91b0f07a
("ipv6: addrconf: implement address generation modes") Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -4587,6 +4587,22 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
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return 0;
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}
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static const struct nla_policy inet6_af_policy[IFLA_INET6_MAX + 1] = {
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[IFLA_INET6_ADDR_GEN_MODE] = { .type = NLA_U8 },
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[IFLA_INET6_TOKEN] = { .len = sizeof(struct in6_addr) },
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};
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static int inet6_validate_link_af(const struct net_device *dev,
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const struct nlattr *nla)
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{
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struct nlattr *tb[IFLA_INET6_MAX + 1];
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if (dev && !__in6_dev_get(dev))
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return -EAFNOSUPPORT;
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return nla_parse_nested(tb, IFLA_INET6_MAX, nla, inet6_af_policy);
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}
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static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla)
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{
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int err = -EINVAL;
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@ -5408,6 +5424,7 @@ static struct rtnl_af_ops inet6_ops = {
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.family = AF_INET6,
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.fill_link_af = inet6_fill_link_af,
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.get_link_af_size = inet6_get_link_af_size,
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.validate_link_af = inet6_validate_link_af,
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.set_link_af = inet6_set_link_af,
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};
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