From d73f80f921fd323af8f35644fb9f3b129f465f66 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 10 Apr 2019 10:05:51 -0700 Subject: 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: f35b794b3b405 ("ipv4: Prepare fib_config for IPv6 gateway") Reported-by: Govindarajulu Varadarajan Signed-off-by: David Ahern Signed-off-by: David S. Miller --- net/ipv4/fib_semantics.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/ipv4/fib_semantics.c') diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 017273885eee..779d2be2b135 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -616,8 +616,9 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh, return -EINVAL; } if (nla) { - fib_cfg.fc_gw_family = AF_INET; fib_cfg.fc_gw4 = nla_get_in_addr(nla); + if (fib_cfg.fc_gw4) + fib_cfg.fc_gw_family = AF_INET; } else if (nlav) { ret = fib_gw_from_via(&fib_cfg, nlav, extack); if (ret) -- cgit v1.2.3