af_xdp: AF_XDP input plugin

Type: feature

Change-Id: I85aa4ad6b68c1aa0e51938002dc691a4b11c545c
Signed-off-by: Damjan Marion <damarion@cisco.com>
Signed-off-by: Benoît Ganne <bganne@cisco.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/plugins/af_xdp/af_xdp.api b/src/plugins/af_xdp/af_xdp.api
new file mode 100644
index 00000000000..765af6820e3
--- /dev/null
+++ b/src/plugins/af_xdp/af_xdp.api
@@ -0,0 +1,91 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+option version = "0.1.0";
+import "vnet/interface_types.api";
+
+enum af_xdp_mode
+{
+  AF_XDP_API_MODE_AUTO = 0,
+  AF_XDP_API_MODE_COPY = 1,
+  AF_XDP_API_MODE_ZERO_COPY = 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 af_xdp interface name (optional)
+    @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)
+    @param prog - eBPF program path (optional)
+*/
+
+define af_xdp_create
+{
+  u32 client_index;
+  u32 context;
+
+  string host_if[64];
+  string name[64];
+  u16 rxq_num [default=1];
+  u16 rxq_size [default=0];
+  u16 txq_size [default=0];
+  vl_api_af_xdp_mode_t mode [default=0];
+  string prog[256];
+  option vat_help = "<host-if linux-ifname> [name ifname] [rx-queue-size size] [tx-queue-size size] [num-rx-queues num] [prog pathname] [zero-copy|no-zero-copy]";
+  option status="in_progress";
+};
+
+/** \brief
+    @param context - sender context, to match reply w/ request
+    @param retval - return value for request
+    @param sw_if_index - software index for the new af_xdp interface
+*/
+
+define af_xdp_create_reply
+{
+  u32 context;
+  i32 retval;
+  vl_api_interface_index_t sw_if_index;
+  option status="in_progress";
+};
+
+/** \brief
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param sw_if_index - interface index
+*/
+
+autoreply define af_xdp_delete
+{
+  u32 client_index;
+  u32 context;
+
+  vl_api_interface_index_t sw_if_index;
+  option vat_help = "<sw_if_index index>";
+  option status="in_progress";
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */