sr: move srmpls to a plugin

Move sr_mpls folder under vnet to the plugin folder, update cmake configuration
and header paths, and add plugin.c to register plugin.

JIRA: VPP-2054

Type: improvement
Change-Id: I1ad6f287f67eb0c35588c339bcd51218fadf5f8e
Signed-off-by: Scott Hutton <schutton@cisco.com>

1 files changed, 257 insertions, 0 deletions

diff --git a/src/plugins/srmpls/sr_mpls_api.c b/src/plugins/srmpls/sr_mpls_api.c
new file mode 100644
index 00000000000..3e89017dbc1
--- /dev/null
+++ b/src/plugins/srmpls/sr_mpls_api.c
@@ -0,0 +1,257 @@
+/*
+ * ------------------------------------------------------------------
+ * sr_api.c - ipv6 segment routing 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 "sr_mpls.h"
+#include <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/feature/feature.h>
+#include <vnet/ip/ip_types_api.h>
+
+#include <vnet/format_fns.h>
+#include <plugins/srmpls/sr_mpls.api_enum.h>
+#include <plugins/srmpls/sr_mpls.api_types.h>
+
+#define vl_api_version(n, v) static u32 api_version = v;
+#include <plugins/srmpls/sr_mpls.api.h>
+#undef vl_api_version
+
+#define vl_endianfun
+#include <plugins/srmpls/sr_mpls.api.h>
+#undef vl_endianfun
+
+#define vl_calcsizefun
+#include <plugins/srmpls/sr_mpls.api.h>
+#undef vl_calcsizefun
+
+#define vl_printfun
+#include <plugins/srmpls/sr_mpls.api.h>
+#undef vl_printfun
+
+#define vl_msg_name_crc_list
+#include <plugins/srmpls/sr_mpls.api.h>
+#undef vl_msg_name_crc_list
+
+#define REPLY_MSG_ID_BASE msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_vpe_api_msg                             \
+_(SR_MPLS_POLICY_DEL, sr_mpls_policy_del)                         \
+_(SR_MPLS_STEERING_ADD_DEL, sr_mpls_steering_add_del)             \
+_(SR_MPLS_POLICY_ASSIGN_ENDPOINT_COLOR, sr_mpls_policy_assign_endpoint_color)
+
+static u16 msg_id_base;
+
+static void
+vl_api_sr_mpls_policy_add_t_handler (vl_api_sr_mpls_policy_add_t * mp)
+{
+  vl_api_sr_mpls_policy_add_reply_t *rmp;
+
+  mpls_label_t *segments = 0, *seg;
+  mpls_label_t this_address = 0;
+
+  int i;
+  for (i = 0; i < mp->n_segments; i++)
+    {
+      vec_add2 (segments, seg, 1);
+      this_address = ntohl (mp->segments[i]);
+      clib_memcpy (seg, &this_address, sizeof (this_address));
+    }
+
+  int rv = 0;
+  rv = sr_mpls_policy_add (ntohl (mp->bsid),
+			   segments, mp->is_spray, ntohl (mp->weight));
+  vec_free (segments);
+
+  REPLY_MACRO (VL_API_SR_MPLS_POLICY_ADD_REPLY);
+}
+
+static void
+vl_api_sr_mpls_policy_mod_t_handler (vl_api_sr_mpls_policy_mod_t * mp)
+{
+  vl_api_sr_mpls_policy_mod_reply_t *rmp;
+
+  mpls_label_t *segments = 0, *seg;
+  mpls_label_t this_address = 0;
+
+  int i;
+  for (i = 0; i < mp->n_segments; i++)
+    {
+      vec_add2 (segments, seg, 1);
+      this_address = ntohl (mp->segments[i]);
+      clib_memcpy (seg, &this_address, sizeof (this_address));
+    }
+
+  int rv = 0;
+  rv = sr_mpls_policy_mod (ntohl (mp->bsid),
+			   ntohl (mp->operation), segments,
+			   ntohl (mp->sl_index), ntohl (mp->weight));
+  vec_free (segments);
+
+  REPLY_MACRO (VL_API_SR_MPLS_POLICY_MOD_REPLY);
+}
+
+static void
+vl_api_sr_mpls_policy_del_t_handler (vl_api_sr_mpls_policy_del_t * mp)
+{
+  vl_api_sr_mpls_policy_del_reply_t *rmp;
+  int rv = 0;
+  rv = sr_mpls_policy_del (ntohl (mp->bsid));
+
+  REPLY_MACRO (VL_API_SR_MPLS_POLICY_DEL_REPLY);
+}
+
+static void vl_api_sr_mpls_steering_add_del_t_handler
+  (vl_api_sr_mpls_steering_add_del_t * mp)
+{
+  vl_api_sr_mpls_steering_add_del_reply_t *rmp;
+  fib_prefix_t prefix;
+  ip46_address_t next_hop;
+  clib_memset (&prefix, 0, sizeof (ip46_address_t));
+
+  ip_prefix_decode (&mp->prefix, &prefix);
+  ip_address_decode (&mp->next_hop, &next_hop);
+
+  int rv = 0;
+  if (mp->is_del)
+    rv = sr_mpls_steering_policy_del (&prefix.fp_addr,
+				      prefix.fp_len,
+				      ip46_address_is_ip4 (&prefix.fp_addr) ?
+				      SR_STEER_IPV4 : SR_STEER_IPV6,
+				      ntohl (mp->table_id),
+				      ntohl (mp->color));
+  else
+    rv = sr_mpls_steering_policy_add (ntohl (mp->bsid),
+				      ntohl (mp->table_id),
+				      &prefix.fp_addr,
+				      prefix.fp_len,
+				      ip46_address_is_ip4 (&prefix.fp_addr) ?
+				      SR_STEER_IPV4 : SR_STEER_IPV6,
+				      &next_hop,
+				      ip46_address_is_ip4 (&next_hop) ?
+				      SR_STEER_IPV4 : SR_STEER_IPV6,
+				      ntohl (mp->color), mp->co_bits,
+				      ntohl (mp->vpn_label));
+
+  REPLY_MACRO (VL_API_SR_MPLS_STEERING_ADD_DEL_REPLY);
+}
+
+static void vl_api_sr_mpls_policy_assign_endpoint_color_t_handler
+  (vl_api_sr_mpls_policy_assign_endpoint_color_t * mp)
+{
+  vl_api_sr_mpls_policy_assign_endpoint_color_reply_t *rmp;
+  int rv = 0;
+
+  ip46_address_t endpoint;
+  clib_memset (&endpoint, 0, sizeof (ip46_address_t));
+  ip_address_decode (&mp->endpoint, &endpoint);
+
+  rv = sr_mpls_policy_assign_endpoint_color (ntohl (mp->bsid),
+					     &endpoint,
+					     ip46_address_is_ip4 (&endpoint) ?
+					     SR_STEER_IPV4 : SR_STEER_IPV6,
+					     ntohl (mp->color));
+
+  REPLY_MACRO (VL_API_SR_MPLS_POLICY_ASSIGN_ENDPOINT_COLOR_REPLY);
+}
+
+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 + REPLY_MSG_ID_BASE);
+  foreach_vl_msg_name_crc_sr_mpls;
+#undef _
+}
+
+static clib_error_t *
+sr_mpls_api_hookup (vlib_main_t * vm)
+{
+  api_main_t *am = vlibapi_get_main ();
+
+  u8 *name = format (0, "sr_mpls_%08x%c", api_version, 0);
+  REPLY_MSG_ID_BASE =
+    vl_msg_api_get_msg_ids ((char *) name, VL_MSG_SR_MPLS_LAST);
+  vec_free (name);
+
+#define _(N, n)                                                               \
+  vl_msg_api_config (&(vl_msg_api_msg_config_t){                              \
+    .id = REPLY_MSG_ID_BASE + VL_API_##N,                                     \
+    .name = #n,                                                               \
+    .handler = vl_api_##n##_t_handler,                                        \
+    .endian = vl_api_##n##_t_endian,                                          \
+    .format_fn = vl_api_##n##_t_format,                                       \
+    .size = sizeof (vl_api_##n##_t),                                          \
+    .traced = 1,                                                              \
+    .tojson = vl_api_##n##_t_tojson,                                          \
+    .fromjson = vl_api_##n##_t_fromjson,                                      \
+    .calc_size = vl_api_##n##_t_calc_size,                                    \
+  });
+  foreach_vpe_api_msg;
+#undef _
+
+  /*
+   * Manually register the sr policy add msg, so we trace enough bytes
+   * to capture a typical segment list
+   */
+  vl_msg_api_config (&(vl_msg_api_msg_config_t){
+    .id = REPLY_MSG_ID_BASE + VL_API_SR_MPLS_POLICY_ADD,
+    .name = "sr_mpls_policy_add",
+    .handler = vl_api_sr_mpls_policy_add_t_handler,
+    .endian = vl_api_sr_mpls_policy_add_t_endian,
+    .format_fn = vl_api_sr_mpls_policy_add_t_format,
+    .size = 256,
+    .traced = 1,
+    .tojson = vl_api_sr_mpls_policy_add_t_tojson,
+    .fromjson = vl_api_sr_mpls_policy_add_t_fromjson,
+    .calc_size = vl_api_sr_mpls_policy_add_t_calc_size,
+  });
+  /*
+   * Manually register the sr policy mod msg, so we trace enough bytes
+   * to capture a typical segment list
+   */
+  vl_msg_api_config (&(vl_msg_api_msg_config_t){
+    .id = REPLY_MSG_ID_BASE + VL_API_SR_MPLS_POLICY_MOD,
+    .name = "sr_mpls_policy_mod",
+    .handler = vl_api_sr_mpls_policy_mod_t_handler,
+    .endian = vl_api_sr_mpls_policy_mod_t_endian,
+    .format_fn = vl_api_sr_mpls_policy_mod_t_format,
+    .size = 256,
+    .traced = 1,
+    .tojson = vl_api_sr_mpls_policy_mod_t_tojson,
+    .fromjson = vl_api_sr_mpls_policy_mod_t_fromjson,
+    .calc_size = vl_api_sr_mpls_policy_mod_t_calc_size,
+  });
+
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  setup_message_id_table (am);
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (sr_mpls_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */