From: Moni Shoua <monis@mellanox.com>
Date: Mon, 18 Aug 2014 11:30:20 +0000 (+0300)
Subject: IB/CMA: Make sure that PSN is not over max allowed
X-Git-Tag: v4.1.12-92~293^2~1^2~24
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b935ea0fafd19f6ee3490b52b9e7b89c8bec3879;p=users%2Fjedix%2Flinux-maple.git

IB/CMA: Make sure that PSN is not over max allowed

This patch limits the initial value for PSN to 24 bits as
spec requires.

Related to commit 76eada4 IB/mlx5: Check that PSN does not overflow
Signed-off-by: Moni Shoua <monis@mellanox.com>
(Ported from Mellanox OFED 2.4)

Signed-off-by: Mukesh Kacker <mukesh.kacker@oracle.com>
---

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index ef46b3d00834e..f2df86d705490 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -549,6 +549,7 @@ struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler,
 	INIT_LIST_HEAD(&id_priv->listen_list);
 	INIT_LIST_HEAD(&id_priv->mc_list);
 	get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num);
+	id_priv->seq_num &= 0x00ffffff;
 
 	return &id_priv->id;
 }