From: Leon Romanovsky <leonro@mellanox.com>
Date: Wed, 27 Dec 2017 07:57:54 +0000 (+0200)
Subject: rdma: Check that port index exists before operate on link layer
X-Git-Tag: v4.16.0~96
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3dee3c81f7fba93ae8c84f6c2fb5009c0764d65;p=thirdparty%2Fiproute2.git

rdma: Check that port index exists before operate on link layer

Link layer operates on port layer, hence it should check
it existence before execution commands.

Fixes: da990ab40a92 ("rdma: Add link object")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
---

diff --git a/rdma/link.c b/rdma/link.c
index f0eaccbb8..d93922890 100644
--- a/rdma/link.c
+++ b/rdma/link.c
@@ -277,6 +277,9 @@ static int link_one_show(struct rd *rd)
 		{ 0 }
 	};
 
+	if (!rd->port_idx)
+		return 0;
+
 	return rd_exec_cmd(rd, cmds, "parameter");
 }