rdma: api: prepare support for direct verb

Prepare rdma interface creation API for direct verb support:
 - add new optional 'mode' parameters to select between ibverb or direct
   verb backend (optional, default to 'auto')
 - set default value for rxq_num (1), rxq_size (1024) and txq_size
   (1024) so they are now optional
 - bump default create value for rxq_size and txq_size to 1024 if
   unset (0) so they are coherent with default values above

Type: feature

Change-Id: Id9eae2b8eb0baaf34a0fcd55da6ad09515f57a93
Signed-off-by: Benoît Ganne <bganne@cisco.com>

1 files changed, 17 insertions, 7 deletions

diff --git a/src/plugins/rdma/rdma.api b/src/plugins/rdma/rdma.api
index a24c4fc7e21..668f2380e6f 100644
--- a/src/plugins/rdma/rdma.api
+++ b/src/plugins/rdma/rdma.api
@@ -18,14 +18,23 @@
 option version = "1.0.0";
 import "vnet/interface_types.api";
 
+enum rdma_mode
+{
+  RDMA_API_MODE_AUTO = 0,
+  RDMA_API_MODE_IBV = 1,
+  RDMA_API_MODE_DV = 2,
+};
+
+
 /** \brief
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param host_if - Linux netdev interface name
     @param name - new rdma interface name
-    @param rxq_num - number of receive queues
-    @param rxq_size - receive queue size
-    @param txq_size - transmit queue size
+    @param rxq_num - number of receive queues (optional)
+    @param rxq_size - receive queue size (optional)
+    @param txq_size - transmit queue size (optional)
+    @param mode - operation mode (optional)
 */
 
 define rdma_create
@@ -35,10 +44,11 @@ define rdma_create
 
   string host_if[64];
   string name[64];
-  u16 rxq_num;
-  u16 rxq_size;
-  u16 txq_size;
-  option vat_help = "<host-if ifname> [name <name>] [rx-queue-size <size>] [tx-queue-size <size>] [num-rx-queues <size>]";
+  u16 rxq_num [default=1];
+  u16 rxq_size [default=1024];
+  u16 txq_size [default=1024];
+  vl_api_rdma_mode_t mode [default=0];
+  option vat_help = "<host-if ifname> [name <name>] [rx-queue-size <size>] [tx-queue-size <size>] [num-rx-queues <size>] [mode <auto|ibv|dv>]";
 };
 
 /** \brief