IB/mad: Add partial Intel OPA MAD support

This patch is the first of 3 which adds processing of OPA MADs

1) Add Intel Omni-Path Architecture defines
2) Increase max management version to accommodate OPA
3) update ib_create_send_mad
	If the device supports OPA MADs and the MAD being sent is the OPA base
	version alter the MAD size and sg lengths as appropriate

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 21 insertions, 3 deletions

diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h
index 349880696abc..eaa8c5dc472b 100644
--- a/include/rdma/ib_mad.h
+++ b/include/rdma/ib_mad.h
@@ -42,8 +42,11 @@
 #include <rdma/ib_verbs.h>
 #include <uapi/rdma/ib_user_mad.h>
 
-/* Management base version */
+/* Management base versions */
 #define IB_MGMT_BASE_VERSION                    1
+#define OPA_MGMT_BASE_VERSION                   0x80
+
+#define OPA_SMP_CLASS_VERSION                   0x80
 
 /* Management classes */
 #define IB_MGMT_CLASS_SUBN_LID_ROUTED           0x01
@@ -136,6 +139,9 @@ enum {
         IB_MGMT_DEVICE_HDR = 64,
         IB_MGMT_DEVICE_DATA = 192,
         IB_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + IB_MGMT_MAD_DATA,
+        OPA_MGMT_MAD_DATA = 2024,
+        OPA_MGMT_RMPP_DATA = 2012,
+        OPA_MGMT_MAD_SIZE = IB_MGMT_MAD_HDR + OPA_MGMT_MAD_DATA,
 };
 
 struct ib_mad_hdr {
@@ -182,6 +188,11 @@ struct ib_mad {
         u8                      data[IB_MGMT_MAD_DATA];
 };
 
+struct opa_mad {
+        struct ib_mad_hdr       mad_hdr;
+        u8                      data[OPA_MGMT_MAD_DATA];
+};
+
 struct ib_rmpp_mad {
         struct ib_mad_hdr       mad_hdr;
         struct ib_rmpp_hdr      rmpp_hdr;
@@ -236,7 +247,10 @@ struct ib_class_port_info {
  *   includes the common MAD, RMPP, and class specific headers.
  * @data_len: Indicates the total size of user-transferred data.
  * @seg_count: The number of RMPP segments allocated for this send.
- * @seg_size: Size of each RMPP segment.
+ * @seg_size: Size of the data in each RMPP segment.  This does not include
+ *   class specific headers.
+ * @seg_rmpp_size: Size of each RMPP segment including the class specific
+ *   headers.
  * @timeout_ms: Time to wait for a response.
  * @retries: Number of times to retry a request for a response.  For MADs
  *   using RMPP, this applies per window.  On completion, returns the number
@@ -256,6 +270,7 @@ struct ib_mad_send_buf {
         int                     data_len;
         int                     seg_count;
         int                     seg_size;
+        int                     seg_rmpp_size;
         int                     timeout_ms;
         int                     retries;
 };
@@ -402,7 +417,10 @@ struct ib_mad_send_wc {
 struct ib_mad_recv_buf {
         struct list_head        list;
         struct ib_grh           *grh;
-        struct ib_mad           *mad;
+        union {
+                struct ib_mad   *mad;
+                struct opa_mad  *opa_mad;
+        };
 };
 
 /**