netdev - [PATCH iproute2-next 05/10] rdma: Check that port index exists before operate on link layer

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Message-Id: <20171227075759.15289-6-leon@kernel.org>
Date:   Wed, 27 Dec 2017 09:57:54 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     David Ahern <dsahern@...il.com>
Cc:     Leon Romanovsky <leonro@...lanox.com>,
        netdev <netdev@...r.kernel.org>,
        Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH iproute2-next 05/10] rdma: Check that port index exists before operate on link layer

From: Leon Romanovsky <leonro@...lanox.com>

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@...lanox.com>
---
 rdma/link.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rdma/link.c b/rdma/link.c
index f0eaccbb..d9392289 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");
 }
 
-- 
2.15.1