IB/cm: Endianness annotations

[linux-2.6-omap-h63xx.git] / drivers / infiniband / core / smi.h

diff --git a/drivers/infiniband/core/smi.h b/drivers/infiniband/core/smi.h
index 3011bfd86dc5423ca8c74afdc97bf5dd205a4ae9..aff96bac49b4c9e126a1e4b6fd309bc4b3b256aa 100644 (file)
--- a/drivers/infiniband/core/smi.h
+++ b/drivers/infiniband/core/smi.h
@@ -3,7 +3,7 @@
  * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
  * Copyright (c) 2004 Intel Corporation.  All rights reserved.
  * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
- * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
+ * Copyright (c) 2004-2007 Voltaire Corporation.  All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -33,7 +33,6 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * $Id: smi.h 1389 2004-12-27 22:56:47Z roland $
  */
 
 #ifndef __SMI_H_
@@ -41,26 +40,51 @@
 
 #include <rdma/ib_smi.h>
 
-int smi_handle_dr_smp_recv(struct ib_smp *smp,
-                          u8 node_type,
-                          int port_num,
-                          int phys_port_cnt);
-extern int smi_check_forward_dr_smp(struct ib_smp *smp);
-extern int smi_handle_dr_smp_send(struct ib_smp *smp,
-                                 u8 node_type,
-                                 int port_num);
+enum smi_action {
+       IB_SMI_DISCARD,
+       IB_SMI_HANDLE
+};
+
+enum smi_forward_action {
+       IB_SMI_LOCAL,   /* SMP should be completed up the stack */
+       IB_SMI_SEND,    /* received DR SMP should be forwarded to the send queue */
+       IB_SMI_FORWARD  /* SMP should be forwarded (for switches only) */
+};
+
+enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type,
+                                      int port_num, int phys_port_cnt);
+int smi_get_fwd_port(struct ib_smp *smp);
+extern enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp);
+extern enum smi_action smi_handle_dr_smp_send(struct ib_smp *smp,
+                                             u8 node_type, int port_num);
 
 /*
- * Return 1 if the SMP should be handled by the local SMA/SM via process_mad
+ * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
+ * via process_mad
  */
-static inline int smi_check_local_smp(struct ib_smp *smp,
-                                     struct ib_device *device)
+static inline enum smi_action smi_check_local_smp(struct ib_smp *smp,
+                                                 struct ib_device *device)
 {
        /* C14-9:3 -- We're at the end of the DR segment of path */
        /* C14-9:4 -- Hop Pointer = Hop Count + 1 -> give to SMA/SM */
        return ((device->process_mad &&
                !ib_get_smp_direction(smp) &&
-               (smp->hop_ptr == smp->hop_cnt + 1)));
+               (smp->hop_ptr == smp->hop_cnt + 1)) ?
+               IB_SMI_HANDLE : IB_SMI_DISCARD);
+}
+
+/*
+ * Return IB_SMI_HANDLE if the SMP should be handled by the local SMA/SM
+ * via process_mad
+ */
+static inline enum smi_action smi_check_local_returning_smp(struct ib_smp *smp,
+                                                  struct ib_device *device)
+{
+       /* C14-13:3 -- We're at the end of the DR segment of path */
+       /* C14-13:4 -- Hop Pointer == 0 -> give to SM */
+       return ((device->process_mad &&
+               ib_get_smp_direction(smp) &&
+               !smp->hop_ptr) ? IB_SMI_HANDLE : IB_SMI_DISCARD);
 }
 
 #endif /* __SMI_H_ */