Subject: [PATCH] IB: Fix data length for RMPP SA sends
From: Hal Rosenstock <[email protected]>
Date: 1127163061 -0700
We need to subtract off the header length from our payload
length when sending multi-packet SA messages.
Signed-off-by: Hal Rosenstock <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
---
drivers/infiniband/core/user_mad.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
eff4c654b1a4a5e5493fbdc3affa6dd48765c085
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -334,10 +334,11 @@ static ssize_t ib_umad_write(struct file
ret = -EINVAL;
goto err_ah;
}
- /* Validate that management class can support RMPP */
+
+ /* Validate that the management class can support RMPP */
if (rmpp_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_ADM) {
hdr_len = offsetof(struct ib_sa_mad, data);
- data_len = length;
+ data_len = length - hdr_len;
} 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 = offsetof(struct ib_vendor_mad, data);
-
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