[ofa-general] {PATCH] Documentation/user_mad.txt: Clarify transaction ID usage

[Hal Rosenstock]

Documentation/user_mad.txt: Clarify transaction ID usage

Signed-off-by: Hal Rosenstock <halr at voltaire.com>

diff --git a/Documentation/infiniband/user_mad.txt b/Documentation/infiniband/user_mad.txt
index 750fe5e..1d2dbf1 100644
--- a/Documentation/infiniband/user_mad.txt
+++ b/Documentation/infiniband/user_mad.txt
@@ -91,6 +91,12 @@ Sending MADs
 	if (ret != sizeof *mad + mad_length)
 		perror("write");
 
+Transaction IDs
+
+  Clients of the MAD layer can use the lower 32 bits of the
+  transaction ID field to track mad request/response pairs.  The
+  upper 32 bits are reserved for use by the kernel ib_mad module.
+
 Setting IsSM Capability Bit
 
   To set the IsSM capability bit for a port, simply open the