[PATCH] IB/ipath: disallow send of invalid packet sizes over UD

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/infiniband/hw/ipath/ipath_ud.c b/drivers/infiniband/hw/ipath/ipath_ud.c
index eeff198..3b6d00b 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_ud.c
+++ b/drivers/infiniband/hw/ipath/ipath_ud.c
@@ -275,6 +275,11 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
                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;