From: Jack Morgenstein <jackm@mellanox.co.il>
Date: Thu, 3 Nov 2005 22:58:33 +0000 (-0800)
Subject: [IB] mthca: check P_Key index in modify QP
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d09e32764176b61c4afee9fd5e7fe04713bfa56f;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

[IB] mthca: check P_Key index in modify QP

Make sure that the P_Key index passed into mthca_modify_qp() is
within the device's P_Key table.

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_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 62ff091505da..8b0b93565a25 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -582,6 +582,13 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
 		return -EINVAL;
 	}
 
+	if ((attr_mask & IB_QP_PKEY_INDEX) && 
+	     attr->pkey_index >= dev->limits.pkey_table_len) {
+		mthca_dbg(dev, "PKey index (%u) too large. max is %d\n",
+			  attr->pkey_index,dev->limits.pkey_table_len-1); 
+		return -EINVAL;
+	}
+
 	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 	if (IS_ERR(mailbox))
 		return PTR_ERR(mailbox);