netdev - [PATCH iproute2-master] iproute: Parse last nexthop in a multipath route

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Date:   Tue,  1 May 2018 16:16:35 +0300
From:   Ido Schimmel <idosch@...lanox.com>
To:     netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, dsahern@...il.com, mlxsw@...lanox.com,
        Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH iproute2-master] iproute: Parse last nexthop in a multipath route

Continue parsing a multipath payload as long as another nexthop can fit
in the payload.

# ip route add 192.0.2.0/24 nexthop dev dummy0 nexthop dev dummy1

Before:
# ip route show 192.0.2.0/24
192.0.2.0/24
        nexthop dev dummy0 weight 1

After:
# ip route show 192.0.2.0/24
192.0.2.0/24
        nexthop dev dummy0 weight 1
        nexthop dev dummy1 weight 1

Fixes: f48e14880a0e ("iproute: refactor multipath print")
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 ip/iproute.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ip/iproute.c b/ip/iproute.c
index 44351bc51b4b..56dd9f25e38e 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c
@@ -650,7 +650,7 @@ static void print_rta_multipath(FILE *fp, const struct rtmsg *r,
 	int len = RTA_PAYLOAD(rta);
 	int first = 1;
 
-	while (len > sizeof(*nh)) {
+	while (len >= sizeof(*nh)) {
 		struct rtattr *tb[RTA_MAX + 1];
 
 		if (nh->rtnh_len > len)
-- 
2.14.3