ipv4: Handle RTA_GATEWAY set to 0
Govindarajulu reported a regression with Network Manager which sends an
RTA_GATEWAY attribute with the address set to 0. Fixup the handling of
RTA_GATEWAY to only set fc_gw_family if the gateway address is actually
set.
Fixes: f35b794b3b
("ipv4: Prepare fib_config for IPv6 gateway")
Reported-by: Govindarajulu Varadarajan <govind.varadar@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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parent
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@ -755,8 +755,9 @@ static int rtm_to_fib_config(struct net *net, struct sk_buff *skb,
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break;
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case RTA_GATEWAY:
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has_gw = true;
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cfg->fc_gw_family = AF_INET;
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cfg->fc_gw4 = nla_get_be32(attr);
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if (cfg->fc_gw4)
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cfg->fc_gw_family = AF_INET;
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break;
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case RTA_VIA:
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has_via = true;
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@ -616,8 +616,9 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh,
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return -EINVAL;
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}
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if (nla) {
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fib_cfg.fc_gw_family = AF_INET;
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fib_cfg.fc_gw4 = nla_get_in_addr(nla);
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if (fib_cfg.fc_gw4)
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fib_cfg.fc_gw_family = AF_INET;
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} else if (nlav) {
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ret = fib_gw_from_via(&fib_cfg, nlav, extack);
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if (ret)
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