API refactoring : l2, mpls, sr

Change-Id: Ic5f273dae607a1d3902489e65734c76f027dc30f
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>

2 files changed, 398 insertions, 0 deletions

diff --git a/src/vnet/sr/sr.api b/src/vnet/sr/sr.api
new file mode 100644
index 00000000000..3d017ce58b6
--- /dev/null
+++ b/src/vnet/sr/sr.api
@@ -0,0 +1,119 @@
+/*
+ * 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 IPv6 segment routing tunnel add / del request
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - add the tunnel if non-zero, else delete it
+    @param name[] - tunnel name (len. 64)
+    @param src_address[] -
+    @param dst_address[] -
+    @param dst_mask_width -
+    @param inner_vrf_id -
+    @param outer_vrf_id -
+    @param flags_net_byte_order -
+    @param n_segments -
+    @param n_tags -
+    @param segs_and_tags[] -
+    @param policy_name[] - name of policy to associate this tunnel to (len. 64)
+*/
+define sr_tunnel_add_del
+{
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 name[64];
+  u8 src_address[16];
+  u8 dst_address[16];
+  u8 dst_mask_width;
+  u32 inner_vrf_id;
+  u32 outer_vrf_id;
+  u16 flags_net_byte_order;
+  u8 n_segments;
+  u8 n_tags;
+  u8 policy_name[64];
+  u8 segs_and_tags[0];
+};
+
+/** \brief IPv6 segment routing tunnel add / del response
+    @param context - sender context, to match reply w/ request
+    @param retval - return value for request
+*/
+define sr_tunnel_add_del_reply
+{
+  u32 context;
+  i32 retval;
+};
+
+/** \brief IPv6 segment routing policy add / del request
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - add the tunnel if non-zero, else delete it
+    @param name[] - policy name (len. 64)
+    @param tunnel_names[] -
+*/
+define sr_policy_add_del
+{
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 name[64];
+  u8 tunnel_names[0];
+};
+
+/** \brief IPv6 segment routing policy add / del response
+    @param context - sender context, to match reply w/ request
+    @param retval - return value for request 
+ 
+    
+*/
+define sr_policy_add_del_reply
+{
+  u32 context;
+  i32 retval;
+};
+
+/** \brief IPv6 segment routing multicast map to policy add / del request
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - add the tunnel if non-zero, else delete it
+    @param multicast_address[] - IP6 multicast address
+    @param policy_name[] = policy name (len.64)
+*/
+define sr_multicast_map_add_del
+{
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 multicast_address[16];
+  u8 policy_name[64];
+};
+
+/** \brief IPv6 segment routing multicast map to policy add / del response
+    @param context - sender context, to match reply w/ request
+    @param retval - return value for request
+*/
+define sr_multicast_map_add_del_reply
+{
+  u32 context;
+  i32 retval;
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
+ 
\ No newline at end of file
diff --git a/src/vnet/sr/sr_api.c b/src/vnet/sr/sr_api.c
new file mode 100644
index 00000000000..6c6eb9b6449
--- /dev/null
+++ b/src/vnet/sr/sr_api.c
@@ -0,0 +1,279 @@
+/*
+ *------------------------------------------------------------------
+ * 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 <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/feature/feature.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                             \
+_(SR_MULTICAST_MAP_ADD_DEL, sr_multicast_map_add_del)
+
+static void vl_api_sr_tunnel_add_del_t_handler
+  (vl_api_sr_tunnel_add_del_t * mp)
+{
+#if IP6SR == 0
+  clib_warning ("unimplemented");
+#else
+  ip6_sr_add_del_tunnel_args_t _a, *a = &_a;
+  int rv = 0;
+  vl_api_sr_tunnel_add_del_reply_t *rmp;
+  ip6_address_t *segments = 0, *seg;
+  ip6_address_t *tags = 0, *tag;
+  ip6_address_t *this_address;
+  int i;
+
+  if (mp->n_segments == 0)
+    {
+      rv = -11;
+      goto out;
+    }
+
+  memset (a, 0, sizeof (*a));
+  a->src_address = (ip6_address_t *) & mp->src_address;
+  a->dst_address = (ip6_address_t *) & mp->dst_address;
+  a->dst_mask_width = mp->dst_mask_width;
+  a->flags_net_byte_order = mp->flags_net_byte_order;
+  a->is_del = (mp->is_add == 0);
+  a->rx_table_id = ntohl (mp->outer_vrf_id);
+  a->tx_table_id = ntohl (mp->inner_vrf_id);
+
+  a->name = format (0, "%s", mp->name);
+  if (!(vec_len (a->name)))
+    a->name = 0;
+
+  a->policy_name = format (0, "%s", mp->policy_name);
+  if (!(vec_len (a->policy_name)))
+    a->policy_name = 0;
+
+  /* Yank segments and tags out of the API message */
+  this_address = (ip6_address_t *) mp->segs_and_tags;
+  for (i = 0; i < mp->n_segments; i++)
+    {
+      vec_add2 (segments, seg, 1);
+      clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
+      this_address++;
+    }
+  for (i = 0; i < mp->n_tags; i++)
+    {
+      vec_add2 (tags, tag, 1);
+      clib_memcpy (tag->as_u8, this_address->as_u8, sizeof (*this_address));
+      this_address++;
+    }
+
+  a->segments = segments;
+  a->tags = tags;
+
+  rv = ip6_sr_add_del_tunnel (a);
+
+out:
+
+  REPLY_MACRO (VL_API_SR_TUNNEL_ADD_DEL_REPLY);
+#endif
+}
+
+static void vl_api_sr_policy_add_del_t_handler
+  (vl_api_sr_policy_add_del_t * mp)
+{
+#if IP6SR == 0
+  clib_warning ("unimplemented");
+#else
+  ip6_sr_add_del_policy_args_t _a, *a = &_a;
+  int rv = 0;
+  vl_api_sr_policy_add_del_reply_t *rmp;
+  int i;
+
+  memset (a, 0, sizeof (*a));
+  a->is_del = (mp->is_add == 0);
+
+  a->name = format (0, "%s", mp->name);
+  if (!(vec_len (a->name)))
+    {
+      rv = VNET_API_ERROR_NO_SUCH_NODE2;
+      goto out;
+    }
+
+  if (!(mp->tunnel_names[0]))
+    {
+      rv = VNET_API_ERROR_NO_SUCH_NODE2;
+      goto out;
+    }
+
+  // start deserializing tunnel_names
+  int num_tunnels = mp->tunnel_names[0];	//number of tunnels
+  u8 *deser_tun_names = mp->tunnel_names;
+  deser_tun_names += 1;		//moving along
+
+  u8 *tun_name = 0;
+  int tun_name_len = 0;
+
+  for (i = 0; i < num_tunnels; i++)
+    {
+      tun_name_len = *deser_tun_names;
+      deser_tun_names += 1;
+      vec_resize (tun_name, tun_name_len);
+      memcpy (tun_name, deser_tun_names, tun_name_len);
+      vec_add1 (a->tunnel_names, tun_name);
+      deser_tun_names += tun_name_len;
+      tun_name = 0;
+    }
+
+  rv = ip6_sr_add_del_policy (a);
+
+out:
+
+  REPLY_MACRO (VL_API_SR_POLICY_ADD_DEL_REPLY);
+#endif
+}
+
+static void vl_api_sr_multicast_map_add_del_t_handler
+  (vl_api_sr_multicast_map_add_del_t * mp)
+{
+#if IP6SR == 0
+  clib_warning ("unimplemented");
+#else
+  ip6_sr_add_del_multicastmap_args_t _a, *a = &_a;
+  int rv = 0;
+  vl_api_sr_multicast_map_add_del_reply_t *rmp;
+
+  memset (a, 0, sizeof (*a));
+  a->is_del = (mp->is_add == 0);
+
+  a->multicast_address = (ip6_address_t *) & mp->multicast_address;
+  a->policy_name = format (0, "%s", mp->policy_name);
+
+  if (a->multicast_address == 0)
+    {
+      rv = -1;
+      goto out;
+    }
+
+  if (!(a->policy_name))
+    {
+      rv = -2;
+      goto out;
+    }
+
+#if DPDK > 0			/* Cannot call replicate without DPDK */
+  rv = ip6_sr_add_del_multicastmap (a);
+#else
+  clib_warning ("multicast replication without DPDK not implemented");
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif /* DPDK */
+
+out:
+
+  REPLY_MACRO (VL_API_SR_MULTICAST_MAP_ADD_DEL_REPLY);
+#endif
+}
+
+/*
+ * sr_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_sr;
+#undef _
+}
+
+static clib_error_t *
+sr_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 _
+
+  /*
+   * Manually register the sr tunnel add del msg, so we trace
+   * enough bytes to capture a typical segment list
+   */
+  vl_msg_api_set_handlers (VL_API_SR_TUNNEL_ADD_DEL,
+			   "sr_tunnel_add_del",
+			   vl_api_sr_tunnel_add_del_t_handler,
+			   vl_noop_handler,
+			   vl_api_sr_tunnel_add_del_t_endian,
+			   vl_api_sr_tunnel_add_del_t_print, 256, 1);
+
+
+  /*
+   * Manually register the sr policy add del msg, so we trace
+   * enough bytes to capture a typical tunnel name list
+   */
+  vl_msg_api_set_handlers (VL_API_SR_POLICY_ADD_DEL,
+			   "sr_policy_add_del",
+			   vl_api_sr_policy_add_del_t_handler,
+			   vl_noop_handler,
+			   vl_api_sr_policy_add_del_t_endian,
+			   vl_api_sr_policy_add_del_t_print, 256, 1);
+
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  setup_message_id_table (am);
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (sr_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */