diff options
| author | Florian Larysch <fl@n621.de> | 2017-04-03 16:46:09 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2017-06-13 09:29:18 -0400 |
| commit | 7d1a0fdd41f8796fc921b322b142b03586685b69 (patch) | |
| tree | 9238dd5ffa52542a521b55ed0c5e9626e21bd8aa /net/ipv4 | |
| parent | 6824dcd302fd10e9764e89f78c0ac66b572e1394 (diff) | |
net: ipv4: fix multipath RTM_GETROUTE behavior when iif is given
[ Upstream commit a8801799c6975601fd58ae62f48964caec2eb83f ]
inet_rtm_getroute synthesizes a skeletal ICMP skb, which is passed to
ip_route_input when iif is given. If a multipath route is present for
the designated destination, ip_multipath_icmp_hash ends up being called,
which uses the source/destination addresses within the skb to calculate
a hash. However, those are not set in the synthetic skb, causing it to
return an arbitrary and incorrect result.
Instead, use UDP, which gets no such special treatment.
Signed-off-by: Florian Larysch <fl@n621.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/route.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index eb1d9839a257..6141fef3a64b 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2496,7 +2496,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh) skb_reset_network_header(skb); /* Bugfix: need to give ip_route_input enough of an IP header to not gag. */ - ip_hdr(skb)->protocol = IPPROTO_ICMP; + ip_hdr(skb)->protocol = IPPROTO_UDP; skb_reserve(skb, MAX_HEADER + sizeof(struct iphdr)); src = tb[RTA_SRC] ? nla_get_in_addr(tb[RTA_SRC]) : 0; |