[infiniband] Use correct transaction identifier in CM responses

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/include/ipxe/ib_mad.h

 	struct ib_smp_class_specific smp;
 } __attribute__ (( packed ));
 
+/** A management datagram transaction identifier */
+struct ib_mad_tid {
+	uint32_t high;
+	uint32_t low;
+} __attribute__ (( packed ));
+
 /** A management datagram common header
  *
  * Defined in section 13.4.2 of the IBA.
 	uint8_t method;
 	uint16_t status;
 	union ib_mad_class_specific class_specific;
-	uint32_t tid[2];
+	struct ib_mad_tid tid;
 	uint16_t attr_id;
 	uint8_t reserved[2];
 	uint32_t attr_mod;

src/net/infiniband/ib_cm.c

  *
  * @v ibdev		Infiniband device
  * @v mi		Management interface
+ * @v tid		Transaction identifier
  * @v av		Address vector
  * @v local_id		Local communication ID
  * @v remote_id		Remote communication ID
  */
 static int ib_cm_send_rtu ( struct ib_device *ibdev,
 			    struct ib_mad_interface *mi,
+			    struct ib_mad_tid *tid,
 			    struct ib_address_vector *av,
 			    uint32_t local_id, uint32_t remote_id ) {
 	union ib_mad mad;
 	mad.hdr.mgmt_class = IB_MGMT_CLASS_CM;
 	mad.hdr.class_version = IB_CM_CLASS_VERSION;
 	mad.hdr.method = IB_MGMT_METHOD_SEND;
+	memcpy ( &mad.hdr.tid, tid, sizeof ( mad.hdr.tid ) );
 	mad.hdr.attr_id = htons ( IB_CM_ATTR_READY_TO_USE );
 	rtu->local_id = htonl ( local_id );
 	rtu->remote_id = htonl ( remote_id );
 	conn = ib_cm_find ( local_id );
 	if ( conn ) {
 		/* Try to send "ready to use" reply */
-		if ( ( rc = ib_cm_send_rtu ( ibdev, mi, av, conn->local_id,
+		if ( ( rc = ib_cm_send_rtu ( ibdev, mi, &mad->hdr.tid, av,
+					     conn->local_id,
 					     conn->remote_id ) ) != 0 ) {
 			/* Ignore errors; the remote end will retry */
 		}
  *
  * @v ibdev		Infiniband device
  * @v mi		Management interface
+ * @v tid		Transaction identifier
  * @v av		Address vector
  * @v local_id		Local communication ID
  * @v remote_id		Remote communication ID
  */
 static int ib_cm_send_drep ( struct ib_device *ibdev,
 			     struct ib_mad_interface *mi,
+			     struct ib_mad_tid *tid,
 			     struct ib_address_vector *av,
 			     uint32_t local_id, uint32_t remote_id ) {
 	union ib_mad mad;
 	mad.hdr.mgmt_class = IB_MGMT_CLASS_CM;
 	mad.hdr.class_version = IB_CM_CLASS_VERSION;
 	mad.hdr.method = IB_MGMT_METHOD_SEND;
+	memcpy ( &mad.hdr.tid, tid, sizeof ( mad.hdr.tid ) );
 	mad.hdr.attr_id = htons ( IB_CM_ATTR_DISCONNECT_REPLY );
 	drep->local_id = htonl ( local_id );
 	drep->remote_id = htonl ( remote_id );
 	}
 
 	/* Send reply */
-	if ( ( rc = ib_cm_send_drep ( ibdev, mi, av, local_id,
+	if ( ( rc = ib_cm_send_drep ( ibdev, mi, &mad->hdr.tid, av, local_id,
 				      remote_id ) ) != 0 ) {
 		/* Ignore errors; the remote end will retry */
 	}
 		}
 
 		/* Send "ready to use" reply */
-		if ( ( rc = ib_cm_send_rtu ( ibdev, mi, av, conn->local_id,
+		if ( ( rc = ib_cm_send_rtu ( ibdev, mi, &mad->hdr.tid, av,
+					     conn->local_id,
 					     conn->remote_id ) ) != 0 ) {
 			/* Treat as non-fatal */
 			rc = 0;

src/net/infiniband/ib_mi.c

 
 	/* Otherwise, ignore it */
 	DBGC ( mi, "MI %p RX TID %08x%08x ignored\n",
-	       mi, ntohl ( hdr->tid[0] ), ntohl ( hdr->tid[1] ) );
+	       mi, ntohl ( hdr->tid.high ), ntohl ( hdr->tid.low ) );
 	return -ENOTSUP;
 }
 
 		goto out;
 	}
 	DBGC ( mi, "MI %p RX TID %08x%08x (%02x,%02x,%02x,%04x) status "
-	       "%04x\n", mi, ntohl ( hdr->tid[0] ), ntohl ( hdr->tid[1] ),
+	       "%04x\n", mi, ntohl ( hdr->tid.high ), ntohl ( hdr->tid.low ),
 	       hdr->mgmt_class, hdr->class_version, hdr->method,
 	       ntohs ( hdr->attr_id ), ntohs ( hdr->status ) );
 	DBGC2_HDA ( mi, 0, mad, sizeof ( *mad ) );
 
 	/* Set common fields */
 	hdr->base_version = IB_MGMT_BASE_VERSION;
-	if ( ( hdr->tid[0] == 0 ) && ( hdr->tid[1] == 0 ) ) {
-		hdr->tid[0] = htonl ( IB_MI_TID_MAGIC );
-		hdr->tid[1] = htonl ( ++next_tid );
+	if ( ( hdr->tid.high == 0 ) && ( hdr->tid.low == 0 ) ) {
+		hdr->tid.high = htonl ( IB_MI_TID_MAGIC );
+		hdr->tid.low = htonl ( ++next_tid );
 	}
 	DBGC ( mi, "MI %p TX TID %08x%08x (%02x,%02x,%02x,%04x) status "
-	       "%04x\n", mi, ntohl ( hdr->tid[0] ), ntohl ( hdr->tid[1] ),
+	       "%04x\n", mi, ntohl ( hdr->tid.high ), ntohl ( hdr->tid.low ),
 	       hdr->mgmt_class, hdr->class_version, hdr->method,
 	       ntohs ( hdr->attr_id ), ntohs ( hdr->status ) );
 	DBGC2_HDA ( mi, 0, mad, sizeof ( *mad ) );
 			smp->return_path.hops[hop_pointer] = ibdev->port;
 		} else {
 			DBGC ( mi, "MI %p TX TID %08x%08x invalid hop pointer "
-			       "%d\n", mi, ntohl ( hdr->tid[0] ),
-			       ntohl ( hdr->tid[1] ), hop_pointer );
+			       "%d\n", mi, ntohl ( hdr->tid.high ),
+			       ntohl ( hdr->tid.low ), hop_pointer );
 			return -EINVAL;
 		}
 	}
 	if ( ! iobuf ) {
 		DBGC ( mi, "MI %p could not allocate buffer for TID "
 		       "%08x%08x\n",
-		       mi, ntohl ( hdr->tid[0] ), ntohl ( hdr->tid[1] ) );
+		       mi, ntohl ( hdr->tid.high ), ntohl ( hdr->tid.low ) );
 		return -ENOMEM;
 	}
 	memcpy ( iob_put ( iobuf, sizeof ( *mad ) ), mad, sizeof ( *mad ) );
 	/* Send I/O buffer */
 	if ( ( rc = ib_post_send ( ibdev, mi->qp, av, iobuf ) ) != 0 ) {
 		DBGC ( mi, "MI %p TX TID %08x%08x failed: %s\n",
-		       mi,  ntohl ( hdr->tid[0] ), ntohl ( hdr->tid[1] ),
+		       mi,  ntohl ( hdr->tid.high ), ntohl ( hdr->tid.low ),
 		       strerror ( rc ) );
 		free_iob ( iobuf );
 		return rc;
 	/* Abandon transaction if we have tried too many times */
 	if ( expired ) {
 		DBGC ( mi, "MI %p abandoning TID %08x%08x\n",
-		       mi, ntohl ( hdr->tid[0] ), ntohl ( hdr->tid[1] ) );
+		       mi, ntohl ( hdr->tid.high ), ntohl ( hdr->tid.low ) );
 		madx->op->complete ( ibdev, mi, madx, -ETIMEDOUT, NULL, NULL );
 		return;
 	}
 	/* Flush any outstanding requests */
 	list_for_each_entry_safe ( madx, tmp, &mi->madx, list ) {
 		DBGC ( mi, "MI %p destroyed while TID %08x%08x in progress\n",
-		       mi, ntohl ( madx->mad.hdr.tid[0] ),
-		       ntohl ( madx->mad.hdr.tid[1] ) );
+		       mi, ntohl ( madx->mad.hdr.tid.high ),
+		       ntohl ( madx->mad.hdr.tid.low ) );
 		madx->op->complete ( ibdev, mi, madx, -ECANCELED, NULL, NULL );
 	}