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authorMichael S. Tsirkin <mst@mellanox.co.il>2005-11-28 13:07:20 -0800
committerRoland Dreier <rolandd@cisco.com>2005-11-28 13:07:20 -0800
commitbf6d9e23a36c8a01bf6fbb945387d8ca3870ff71 (patch)
tree9fd732ebc6b85090b64862c4ee3af7078ba1f822
parent187a25863fe014486ee834164776b2a587d6934d (diff)
IB/umad: fix RMPP handling
ib_umad_write in user_mad.c is looking at rmpp_hdr field in MAD before checking that the MAD actually has the RMPP header. So for a MAD without RMPP header it looks like we are actually checking a bit inside M_Key, or something. Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/infiniband/core/user_mad.c41
1 files changed, 22 insertions, 19 deletions
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index e73f81c2238..eb7f52537cc 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -310,7 +310,7 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
u8 method;
__be64 *tid;
int ret, length, hdr_len, copy_offset;
- int rmpp_active = 0;
+ int rmpp_active, has_rmpp_header;
if (count < sizeof (struct ib_user_mad) + IB_MGMT_RMPP_HDR)
return -EINVAL;
@@ -360,28 +360,31 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
}
rmpp_mad = (struct ib_rmpp_mad *) packet->mad.data;
- if (ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_ACTIVE) {
- /* RMPP active */
- if (!agent->rmpp_version) {
- ret = -EINVAL;
- goto err_ah;
- }
-
- /* Validate that the management class can support RMPP */
- if (rmpp_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_ADM) {
- hdr_len = IB_MGMT_SA_HDR;
- } else if ((rmpp_mad->mad_hdr.mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START) &&
- (rmpp_mad->mad_hdr.mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END)) {
- hdr_len = IB_MGMT_VENDOR_HDR;
- } else {
- ret = -EINVAL;
- goto err_ah;
- }
- rmpp_active = 1;
+ if (rmpp_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_ADM) {
+ hdr_len = IB_MGMT_SA_HDR;
copy_offset = IB_MGMT_RMPP_HDR;
+ has_rmpp_header = 1;
+ } else if (rmpp_mad->mad_hdr.mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START &&
+ rmpp_mad->mad_hdr.mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END) {
+ hdr_len = IB_MGMT_VENDOR_HDR;
+ copy_offset = IB_MGMT_RMPP_HDR;
+ has_rmpp_header = 1;
} else {
hdr_len = IB_MGMT_MAD_HDR;
copy_offset = IB_MGMT_MAD_HDR;
+ has_rmpp_header = 0;
+ }
+
+ if (has_rmpp_header)
+ rmpp_active = ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) &
+ IB_MGMT_RMPP_FLAG_ACTIVE;
+ else
+ rmpp_active = 0;
+
+ /* Validate that the management class can support RMPP */
+ if (rmpp_active && !agent->rmpp_version) {
+ ret = -EINVAL;
+ goto err_ah;
}
packet->msg = ib_create_send_mad(agent,