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, 69 insertions, 0 deletions

diff --git a/src/plugins/af_xdp/unformat.c b/src/plugins/af_xdp/unformat.c
new file mode 100644
index 00000000000..154d459900e
--- /dev/null
+++ b/src/plugins/af_xdp/unformat.c
@@ -0,0 +1,69 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2020 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.
+ *------------------------------------------------------------------
+ */
+
+#include <vlib/vlib.h>
+#include <af_xdp/af_xdp.h>
+
+uword
+unformat_af_xdp_create_if_args (unformat_input_t * input, va_list * vargs)
+{
+  af_xdp_create_if_args_t *args = va_arg (*vargs, af_xdp_create_if_args_t *);
+  unformat_input_t _line_input, *line_input = &_line_input;
+  uword ret = 1;
+
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  clib_memset (args, 0, sizeof (*args));
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "host-if %s", &args->linux_ifname))
+	;
+      else if (unformat (line_input, "name %s", &args->name))
+	;
+      else if (unformat (line_input, "rx-queue-size %u", &args->rxq_size))
+	;
+      else if (unformat (line_input, "tx-queue-size %u", &args->txq_size))
+	;
+      else if (unformat (line_input, "num-rx-queues %u", &args->rxq_num))
+	;
+      else if (unformat (line_input, "prog %s", &args->prog))
+	;
+      else if (unformat (line_input, "no-zero-copy"))
+	args->mode = AF_XDP_MODE_COPY;
+      else if (unformat (line_input, "zero-copy"))
+	args->mode = AF_XDP_MODE_ZERO_COPY;
+      else
+	{
+	  /* return failure on unknown input */
+	  ret = 0;
+	  break;
+	}
+    }
+
+  unformat_free (line_input);
+  return ret;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */