From: Jack Morgenstein <jackm@mellanox.co.il>
Date: Mon, 20 Mar 2006 15:32:43 +0000 (+0200)
Subject: IB/mthca: Check SRQ limit in modify SRQ operation
X-Git-Tag: v2.6.17-rc1~730^2~5
X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;h=d4301e2c6685c87206f24f54969120b182119ab0;p=net-next-2.6.git

IB/mthca: Check SRQ limit in modify SRQ operation

When setting the shared receive queue (SRQ) watermark in a modify SRQ
operation, make sure that the supplied value is not larger than the
full size of the SRQ.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c
index 4e671e00e42..0cfd1580221 100644
--- a/drivers/infiniband/hw/mthca/mthca_srq.c
+++ b/drivers/infiniband/hw/mthca/mthca_srq.c
@@ -358,6 +358,8 @@ int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 		return -EINVAL;
 
 	if (attr_mask & IB_SRQ_LIMIT) {
+		if (attr->srq_limit > srq->max)
+			return -EINVAL;
 		ret = mthca_ARM_SRQ(dev, srq->srqn, attr->srq_limit, &status);
 		if (ret)
 			return ret;