From: Joachim Fenkes <fenkes@de.ibm.com>
Date: Tue, 11 Sep 2007 13:33:40 +0000 (+0200)
Subject: IB/ehca: Add check for max #SGE to create_qp()
X-Git-Tag: v2.6.24-rc1~1453^2~63
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b708fba3c2942a175c3cb04a7bb4c89f907b497b;p=linux-2.6

IB/ehca: Add check for max #SGE to create_qp()

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 88d7dd9460..f95403cb52 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -513,7 +513,7 @@ static struct ehca_qp *internal_create_qp(
 			} else if (init_attr->cap.max_send_wr > 255) {
 				ehca_err(pd->device,
 					 "Invalid Number of "
-					 "ax_send_wr=%x for UD QP_TYPE=%x",
+					 "max_send_wr=%x for UD QP_TYPE=%x",
 					 init_attr->cap.max_send_wr, qp_type);
 				return ERR_PTR(-EINVAL);
 			}
@@ -524,6 +524,18 @@ static struct ehca_qp *internal_create_qp(
 			return ERR_PTR(-EINVAL);
 			break;
 		}
+	} else {
+		int max_sge = (qp_type == IB_QPT_UD || qp_type == IB_QPT_SMI
+			       || qp_type == IB_QPT_GSI) ? 250 : 252;
+
+		if (init_attr->cap.max_send_sge > max_sge
+		    || init_attr->cap.max_recv_sge > max_sge) {
+			ehca_err(pd->device, "Invalid number of SGEs requested "
+				 "send_sge=%x recv_sge=%x max_sge=%x",
+				 init_attr->cap.max_send_sge,
+				 init_attr->cap.max_recv_sge, max_sge);
+			return ERR_PTR(-EINVAL);
+		}
 	}
 
 	if (pd->uobject && udata)