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Subject: [PATCH 23 of 39] IB/ipath - disallow send of invalid packet sizes
	over UD
X-Mercurial-Node: 8e39364c2402304872e6289c2a9490302e9992aa
Message-Id: <8e39364c2402304872e6.1151617274@eng-12.pathscale.com>
In-Reply-To: <patchbomb.1151617251@eng-12.pathscale.com>
Date: Thu, 29 Jun 2006 14:41:14 -0700
From: "Bryan O'Sullivan" <bos@pathscale.com>
To: akpm@osdl.org, rdreier@cisco.com, mst@mellanox.co.il
Cc: openib-general@openib.org, linux-kernel@vger.kernel.org,
       netdev@vger.kernel.org
Sender: linux-kernel-owner@vger.kernel.org
X-Mailing-List: linux-kernel@vger.kernel.org

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>

diff -r 811021b6c112 -r 8e39364c2402 drivers/infiniband/hw/ipath/ipath_ud.c
--- a/drivers/infiniband/hw/ipath/ipath_ud.c	Thu Jun 29 14:33:26 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_ud.c	Thu Jun 29 14:33:26 2006 -0700
@@ -274,6 +274,11 @@ int ipath_post_ud_send(struct ipath_qp *
 		}
 		len += wr->sg_list[i].length;
 		ss.num_sge++;
+	}
+	/* Check for invalid packet size. */
+	if (len > ipath_layer_get_ibmtu(dev->dd)) {
+		ret = -EINVAL;
+		goto bail;
 	}
 	extra_bytes = (4 - len) & 3;
 	nwords = (len + extra_bytes) >> 2;