API refactoring : af_packet

Change-Id: Id912ca655583a419b52d4904d6c54dac1f1b26ac
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>

4 files changed, 225 insertions, 5 deletions

diff --git a/vnet/Makefile.am b/vnet/Makefile.am
index 60fcbf55..f1ba4005 100644
--- a/vnet/Makefile.am
+++ b/vnet/Makefile.am
@@ -16,6 +16,8 @@ AUTOMAKE_OPTIONS = foreign subdir-objects
 AM_CFLAGS = -Wall -Werror @DPDK@ @DPDK_CRYPTO@ @IPSEC@ @IPV6SR@
 
 BUILT_SOURCES = 				\
+ vnet/devices/af_packet/af_packet.api.h		\
+ vnet/devices/af_packet/af_packet.api.json	\
  vnet/interface.api.h				\
  vnet/interface.api.json			\
  vnet/ip/ip.api.h				\
@@ -27,7 +29,7 @@ BUILT_SOURCES = 				\
  vnet/span/span.api.h				\
  vnet/span/span.api.json			\
  vnet/unix/tap.api.h				\
- vnet/unix/tap.api.json             \
+ vnet/unix/tap.api.json				\
  vnet/vxlan/vxlan.api.h				\
  vnet/vxlan/vxlan.api.json
 
@@ -770,10 +772,12 @@ libvnet_la_SOURCES +=				\
   vnet/devices/af_packet/af_packet.c		\
   vnet/devices/af_packet/device.c		\
   vnet/devices/af_packet/node.c			\
-  vnet/devices/af_packet/cli.c
+  vnet/devices/af_packet/cli.c			\
+  vnet/devices/af_packet/af_packet_api.c
 
-nobase_include_HEADERS +=			\
-  vnet/devices/af_packet/af_packet.h
+nobase_include_HEADERS +=				\
+  vnet/devices/af_packet/af_packet.h	\
+  vnet/devices/af_packet/af_packet.api.h
 
 ########################################
 # NETMAP interface
@@ -938,12 +942,13 @@ SUFFIXES = .api.h .api .api.json
 apidir = $(prefix)/vnet
 
 api_DATA =					\
+ vnet/devices/af_packet/af_packet.api.json	\
  vnet/interface.api.json			\
  vnet/ip/ip.api.json				\
  vnet/l2/l2.api.json				\
  vnet/map/map.api.json				\
  vnet/span/span.api.json			\
- vnet/unix/tap.api.json             \
+ vnet/unix/tap.api.json				\
  vnet/vxlan/vxlan.api.json
 
 # The actual %.api.h rule is in .../build-data/packages/suffix-rules.mk
diff --git a/vnet/vnet/devices/af_packet/af_packet.api b/vnet/vnet/devices/af_packet/af_packet.api
new file mode 100644
index 00000000..9fb2a207
--- /dev/null
+++ b/vnet/vnet/devices/af_packet/af_packet.api
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2015-2016 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.
+ */
+
+/** \brief Create host-interface
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param host_if_name - interface name
+    @param hw_addr - interface MAC
+    @param use_random_hw_addr - use random generated MAC
+*/
+define af_packet_create
+{
+  u32 client_index;
+  u32 context;
+
+  u8 host_if_name[64];
+  u8 hw_addr[6];
+  u8 use_random_hw_addr;
+};
+
+/** \brief Create host-interface response
+    @param context - sender context, to match reply w/ request
+    @param retval - return value for request
+*/
+define af_packet_create_reply
+{
+  u32 context;
+  i32 retval;
+  u32 sw_if_index;
+};
+
+/** \brief Delete host-interface
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param host_if_name - interface name
+*/
+define af_packet_delete
+{
+  u32 client_index;
+  u32 context;
+
+  u8 host_if_name[64];
+};
+
+/** \brief Delete host-interface response
+    @param context - sender context, to match reply w/ request
+    @param retval - return value for request
+*/
+define af_packet_delete_reply
+{
+  u32 context;
+  i32 retval;
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/vnet/vnet/devices/af_packet/af_packet_api.c b/vnet/vnet/devices/af_packet/af_packet_api.c
new file mode 100644
index 00000000..414c838c
--- /dev/null
+++ b/vnet/vnet/devices/af_packet/af_packet_api.c
@@ -0,0 +1,143 @@
+/*
+ *------------------------------------------------------------------
+ * af_packet_api.c - af-packet api
+ *
+ * Copyright (c) 2016 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 <vnet/vnet.h>
+#include <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/devices/af_packet/af_packet.h>
+
+#include <vnet/vnet_msg_enum.h>
+
+#define vl_typedefs		/* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun		/* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vnet/vnet_all_api_h.h>
+#undef vl_printfun
+
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_vpe_api_msg                             \
+_(AF_PACKET_CREATE, af_packet_create)                   \
+_(AF_PACKET_DELETE, af_packet_delete)
+
+static void
+vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  vl_api_af_packet_create_reply_t *rmp;
+  int rv = 0;
+  u8 *host_if_name = NULL;
+  u32 sw_if_index;
+
+  host_if_name = format (0, "%s", mp->host_if_name);
+  vec_add1 (host_if_name, 0);
+
+  rv = af_packet_create_if (vm, host_if_name,
+			    mp->use_random_hw_addr ? 0 : mp->hw_addr,
+			    &sw_if_index);
+
+  vec_free (host_if_name);
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2(VL_API_AF_PACKET_CREATE_REPLY,
+  ({
+    rmp->sw_if_index = clib_host_to_net_u32(sw_if_index);
+  }));
+  /* *INDENT-ON* */
+}
+
+static void
+vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  vl_api_af_packet_delete_reply_t *rmp;
+  int rv = 0;
+  u8 *host_if_name = NULL;
+
+  host_if_name = format (0, "%s", mp->host_if_name);
+  vec_add1 (host_if_name, 0);
+
+  rv = af_packet_delete_if (vm, host_if_name);
+
+  vec_free (host_if_name);
+
+  REPLY_MACRO (VL_API_AF_PACKET_DELETE_REPLY);
+}
+
+/*
+ * af_packet_api_hookup
+ * Add vpe's API message handlers to the table.
+ * vlib has alread mapped shared memory and
+ * added the client registration handlers.
+ * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ */
+#define vl_msg_name_crc_list
+#include <vnet/vnet_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (api_main_t * am)
+{
+#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
+  foreach_vl_msg_name_crc_af_packet;
+#undef _
+}
+
+static clib_error_t *
+af_packet_api_hookup (vlib_main_t * vm)
+{
+  api_main_t *am = &api_main;
+
+#define _(N,n)                                                  \
+    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
+                           vl_api_##n##_t_handler,              \
+                           vl_noop_handler,                     \
+                           vl_api_##n##_t_endian,               \
+                           vl_api_##n##_t_print,                \
+                           sizeof(vl_api_##n##_t), 1);
+  foreach_vpe_api_msg;
+#undef _
+
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  setup_message_id_table (am);
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (af_packet_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/vnet/vnet/vnet_all_api_h.h b/vnet/vnet/vnet_all_api_h.h
index 0eb7484c..b25ece71 100644
--- a/vnet/vnet/vnet_all_api_h.h
+++ b/vnet/vnet/vnet_all_api_h.h
@@ -29,6 +29,7 @@
 #include <vlibmemory/vl_memory_api_h.h>
 #endif /* included_from_layer_3 */
 
+#include <vnet/devices/af_packet/af_packet.api.h>
 #include <vnet/interface.api.h>
 #include <vnet/map/map.api.h>
 #include <vnet/l2/l2.api.h>