linux-kernel - [Patch] infiniband: check local reserved ports

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Message-Id: <20100603083106.6047.7657.sendpatchset@localhost.localdomain>
Date:	Thu, 3 Jun 2010 04:27:02 -0400
From:	Amerigo Wang <amwang@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	netdev@...r.kernel.org,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	Amerigo Wang <amwang@...hat.com>,
	Roland Dreier <rdreier@...co.com>, davem@...emloft.net
Subject: [Patch] infiniband: check local reserved ports


Since Tetsuo's patch already got merged, now this is the missing part
for local port reservation.

Cc: Roland Dreier <rdreier@...co.com>
Cc: Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
Signed-off-by: WANG Cong <amwang@...hat.com>

---
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index b930b81..7b89bab 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -1978,6 +1978,7 @@ static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv)
 	rover = net_random() % remaining + low;
 retry:
 	if (last_used_port != rover &&
+	    !inet_is_reserved_local_port(rover) &&
 	    !idr_find(ps, (unsigned short) rover)) {
 		int ret = cma_alloc_port(ps, id_priv, rover);
 		/*
--
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