srv6-mobile: Implement SRv6 mobile API funcs

This merge request adds the feature to manipulate localsids and policies for SRv6 mobile via API.

Type: feature
Signed-off-by: Takeru Hayasaka <hayatake396@gmail.com>
Change-Id: Ibb46bf71ae1d9d4591ce2c8ccf66f520887dad70

13 files changed, 682 insertions, 92 deletions

diff --git a/src/plugins/srv6-mobile/CMakeLists.txt b/src/plugins/srv6-mobile/CMakeLists.txt
index 5a9945c2e4f..a917c8ded82 100644
--- a/src/plugins/srv6-mobile/CMakeLists.txt
+++ b/src/plugins/srv6-mobile/CMakeLists.txt
@@ -21,6 +21,11 @@ add_vpp_plugin(srv6mobile
   gtp6_d_di.c
   gtp6_dt.c
   node.c
+  sr_mobile_api.c
+
+  API_FILES
+  sr_mobile.api
+  sr_mobile_types.api
 
   INSTALL_HEADERS
   mobile.h
diff --git a/src/plugins/srv6-mobile/gtp4_d.c b/src/plugins/srv6-mobile/gtp4_d.c
index 269902429d3..d5a5a6a567a 100644
--- a/src/plugins/srv6-mobile/gtp4_d.c
+++ b/src/plugins/srv6-mobile/gtp4_d.c
@@ -105,11 +105,33 @@ clb_format_srv6_t_m_gtp4_d (u8 * s, va_list * args)
   return s;
 }
 
+void
+alloc_param_srv6_t_m_gtp4_d (void **plugin_mem_p, const void *v6src_prefix,
+			     const u32 v6src_prefixlen, const void *sr_prefix,
+			     const u32 sr_prefixlen, const u32 fib_index,
+			     const u8 nhtype, const bool drop_in)
+{
+  srv6_end_gtp4_d_param_t *ls_mem;
+  ls_mem = clib_mem_alloc (sizeof *ls_mem);
+  clib_memset (ls_mem, 0, sizeof *ls_mem);
+  *plugin_mem_p = ls_mem;
+
+  ls_mem->v6src_prefixlen = v6src_prefixlen;
+  memcpy (&ls_mem->v6src_prefix, v6src_prefix, sizeof (ip6_address_t));
+  ls_mem->sr_prefixlen = sr_prefixlen;
+  memcpy (&ls_mem->sr_prefix, sr_prefix, sizeof (ip6_address_t));
+
+  ls_mem->nhtype = nhtype;
+  ls_mem->drop_in = drop_in;
+  ls_mem->fib_table = fib_index;
+  ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_index);
+  ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_index);
+}
+
 static uword
 clb_unformat_srv6_t_m_gtp4_d (unformat_input_t * input, va_list * args)
 {
   void **plugin_mem_p = va_arg (*args, void **);
-  srv6_end_gtp4_d_param_t *ls_mem;
   ip6_address_t sr_prefix;
   u32 sr_prefixlen;
   ip6_address_t v6src_prefix;
@@ -172,23 +194,9 @@ clb_unformat_srv6_t_m_gtp4_d (unformat_input_t * input, va_list * args)
       return 0;
     }
 
-  ls_mem = clib_mem_alloc (sizeof *ls_mem);
-  clib_memset (ls_mem, 0, sizeof *ls_mem);
-  *plugin_mem_p = ls_mem;
-
-  ls_mem->sr_prefix = sr_prefix;
-  ls_mem->sr_prefixlen = sr_prefixlen;
-
-  ls_mem->v6src_prefix = v6src_prefix;
-  ls_mem->v6src_prefixlen = v6src_prefixlen;
-
-  ls_mem->nhtype = nhtype;
-
-  ls_mem->drop_in = drop_in;
-
-  ls_mem->fib_table = fib_table;
-  ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
-  ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
+  alloc_param_srv6_t_m_gtp4_d (plugin_mem_p, &v6src_prefix, v6src_prefixlen,
+			       &sr_prefix, sr_prefixlen, fib_table, nhtype,
+			       drop_in);
 
   return 1;
 }
diff --git a/src/plugins/srv6-mobile/gtp4_dt.c b/src/plugins/srv6-mobile/gtp4_dt.c
index 1f6bab1d055..c4752b77557 100644
--- a/src/plugins/srv6-mobile/gtp4_dt.c
+++ b/src/plugins/srv6-mobile/gtp4_dt.c
@@ -90,11 +90,31 @@ clb_format_srv6_t_m_gtp4_dt (u8 * s, va_list * args)
   return s;
 }
 
+void
+alloc_param_srv6_t_m_gtp4_dt (void **plugin_mem_p, const u32 fib_index,
+			      const u32 local_fib_index, const u8 type)
+{
+  srv6_t_gtp4_dt_param_t *ls_mem;
+  ls_mem = clib_mem_alloc (sizeof *ls_mem);
+  clib_memset (ls_mem, 0, sizeof *ls_mem);
+  *plugin_mem_p = ls_mem;
+
+  ls_mem->fib4_index = fib_table_find (FIB_PROTOCOL_IP4, fib_index);
+  ls_mem->fib6_index = fib_table_find (FIB_PROTOCOL_IP6, fib_index);
+
+  if (type == SRV6_GTP4_DT6 || type == SRV6_GTP4_DT46)
+    {
+      ls_mem->local_fib_index =
+	fib_table_find (FIB_PROTOCOL_IP6, local_fib_index);
+    }
+
+  ls_mem->type = type;
+}
+
 static uword
 clb_unformat_srv6_t_m_gtp4_dt (unformat_input_t * input, va_list * args)
 {
   void **plugin_mem_p = va_arg (*args, void **);
-  srv6_t_gtp4_dt_param_t *ls_mem;
   u32 fib_index = 0;
   u32 local_fib_index = 0;
   u32 type;
@@ -118,20 +138,8 @@ clb_unformat_srv6_t_m_gtp4_dt (unformat_input_t * input, va_list * args)
       return 0;
     }
 
-  ls_mem = clib_mem_alloc (sizeof *ls_mem);
-  clib_memset (ls_mem, 0, sizeof *ls_mem);
-  *plugin_mem_p = ls_mem;
-
-  ls_mem->fib4_index = fib_table_find (FIB_PROTOCOL_IP4, fib_index);
-  ls_mem->fib6_index = fib_table_find (FIB_PROTOCOL_IP6, fib_index);
-
-  if (type == SRV6_GTP4_DT6 || type == SRV6_GTP4_DT46)
-    {
-      ls_mem->local_fib_index =
-	fib_table_find (FIB_PROTOCOL_IP6, local_fib_index);
-    }
-
-  ls_mem->type = type;
+  alloc_param_srv6_t_m_gtp4_dt (plugin_mem_p, fib_index, local_fib_index,
+				type);
 
   return 1;
 }
diff --git a/src/plugins/srv6-mobile/gtp4_e.c b/src/plugins/srv6-mobile/gtp4_e.c
index 8efb938cf72..828f924464d 100644
--- a/src/plugins/srv6-mobile/gtp4_e.c
+++ b/src/plugins/srv6-mobile/gtp4_e.c
@@ -80,11 +80,26 @@ clb_format_srv6_end_m_gtp4_e (u8 * s, va_list * args)
   return s;
 }
 
+void
+alloc_param_srv6_end_m_gtp4_e (void **plugin_mem_p, const void *v4src_addr,
+			       const u32 v4src_position, const u32 fib_table)
+{
+  srv6_end_gtp4_e_param_t *ls_mem;
+  ls_mem = clib_mem_alloc (sizeof *ls_mem);
+  clib_memset (ls_mem, 0, sizeof *ls_mem);
+  *plugin_mem_p = ls_mem;
+  ls_mem->v4src_position = v4src_position;
+  memcpy (&ls_mem->v4src_addr, v4src_addr, sizeof (ip4_address_t));
+
+  ls_mem->fib_table = fib_table;
+  ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
+  ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
+}
+
 static uword
 clb_unformat_srv6_end_m_gtp4_e (unformat_input_t * input, va_list * args)
 {
   void **plugin_mem_p = va_arg (*args, void **);
-  srv6_end_gtp4_e_param_t *ls_mem;
   ip4_address_t v4src_addr;
   u32 v4src_position = 0;
   u32 fib_table;
@@ -113,16 +128,8 @@ clb_unformat_srv6_end_m_gtp4_e (unformat_input_t * input, va_list * args)
   if (!config)
     return 0;
 
-  ls_mem = clib_mem_alloc (sizeof *ls_mem);
-  clib_memset (ls_mem, 0, sizeof *ls_mem);
-  *plugin_mem_p = ls_mem;
-
-  ls_mem->v4src_position = v4src_position;
-  memcpy (&ls_mem->v4src_addr, &v4src_addr, sizeof (ip4_address_t));
-
-  ls_mem->fib_table = fib_table;
-  ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
-  ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
+  alloc_param_srv6_end_m_gtp4_e (plugin_mem_p, &v4src_addr, v4src_position,
+				 fib_table);
 
   return 1;
 }
diff --git a/src/plugins/srv6-mobile/gtp6_d.c b/src/plugins/srv6-mobile/gtp6_d.c
index 79549276c2c..1f5b9ac0d0f 100644
--- a/src/plugins/srv6-mobile/gtp6_d.c
+++ b/src/plugins/srv6-mobile/gtp6_d.c
@@ -94,11 +94,29 @@ clb_format_srv6_end_m_gtp6_d (u8 * s, va_list * args)
   return s;
 }
 
+void
+alloc_param_srv6_end_m_gtp6_d (void **plugin_mem_p, const void *sr_prefix,
+			       const u32 sr_prefixlen, const u8 nhtype,
+			       const bool drop_in, const u32 fib_table)
+{
+  srv6_end_gtp6_d_param_t *ls_mem;
+  ls_mem = clib_mem_alloc (sizeof *ls_mem);
+  clib_memset (ls_mem, 0, sizeof *ls_mem);
+  *plugin_mem_p = ls_mem;
+
+  ls_mem->sr_prefixlen = sr_prefixlen;
+  memcpy (&ls_mem->sr_prefix, sr_prefix, sizeof (ip6_address_t));
+  ls_mem->nhtype = nhtype;
+  ls_mem->drop_in = drop_in;
+  ls_mem->fib_table = fib_table;
+  ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
+  ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
+}
+
 static uword
 clb_unformat_srv6_end_m_gtp6_d (unformat_input_t * input, va_list * args)
 {
   void **plugin_mem_p = va_arg (*args, void **);
-  srv6_end_gtp6_d_param_t *ls_mem;
   ip6_address_t sr_prefix;
   u32 sr_prefixlen;
   u8 nhtype = SRV6_NHTYPE_NONE;
@@ -150,20 +168,8 @@ clb_unformat_srv6_end_m_gtp6_d (unformat_input_t * input, va_list * args)
       return 0;
     }
 
-  ls_mem = clib_mem_alloc (sizeof *ls_mem);
-  clib_memset (ls_mem, 0, sizeof *ls_mem);
-  *plugin_mem_p = ls_mem;
-
-  ls_mem->sr_prefix = sr_prefix;
-  ls_mem->sr_prefixlen = sr_prefixlen;
-
-  ls_mem->nhtype = nhtype;
-
-  ls_mem->drop_in = drop_in;
-
-  ls_mem->fib_table = fib_table;
-  ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
-  ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
+  alloc_param_srv6_end_m_gtp6_d (plugin_mem_p, &sr_prefix, sr_prefixlen,
+				 nhtype, drop_in, fib_table);
 
   return 1;
 }
diff --git a/src/plugins/srv6-mobile/gtp6_d_di.c b/src/plugins/srv6-mobile/gtp6_d_di.c
index 601db26aa90..80c0dbcec7c 100644
--- a/src/plugins/srv6-mobile/gtp6_d_di.c
+++ b/src/plugins/srv6-mobile/gtp6_d_di.c
@@ -91,11 +91,24 @@ clb_format_srv6_end_m_gtp6_d_di (u8 * s, va_list * args)
   return s;
 }
 
+void
+alloc_param_srv6_end_m_gtp6_di (void **plugin_mem_p, const void *sr_prefix,
+				const u32 sr_prefixlen, const u8 nhtype)
+{
+  srv6_end_gtp6_d_param_t *ls_mem;
+  ls_mem = clib_mem_alloc (sizeof *ls_mem);
+  clib_memset (ls_mem, 0, sizeof *ls_mem);
+  *plugin_mem_p = ls_mem;
+
+  ls_mem->sr_prefixlen = sr_prefixlen;
+  memcpy (&ls_mem->sr_prefix, sr_prefix, sizeof (ip6_address_t));
+  ls_mem->nhtype = nhtype;
+}
+
 static uword
 clb_unformat_srv6_end_m_gtp6_d_di (unformat_input_t * input, va_list * args)
 {
   void **plugin_mem_p = va_arg (*args, void **);
-  srv6_end_gtp6_d_param_t *ls_mem;
   ip6_address_t sr_prefix;
   u32 sr_prefixlen = 0;
   u8 nhtype;
@@ -125,13 +138,8 @@ clb_unformat_srv6_end_m_gtp6_d_di (unformat_input_t * input, va_list * args)
       return 0;
     }
 
-  ls_mem = clib_mem_alloc (sizeof *ls_mem);
-  clib_memset (ls_mem, 0, sizeof *ls_mem);
-  *plugin_mem_p = ls_mem;
-
-  ls_mem->sr_prefix = sr_prefix;
-  ls_mem->sr_prefixlen = sr_prefixlen;
-  ls_mem->nhtype = nhtype;
+  alloc_param_srv6_end_m_gtp6_di (plugin_mem_p, &sr_prefix, sr_prefixlen,
+				  nhtype);
 
   return 1;
 }
diff --git a/src/plugins/srv6-mobile/gtp6_dt.c b/src/plugins/srv6-mobile/gtp6_dt.c
index ba8de54bec9..5fc0918621d 100644
--- a/src/plugins/srv6-mobile/gtp6_dt.c
+++ b/src/plugins/srv6-mobile/gtp6_dt.c
@@ -84,11 +84,31 @@ clb_format_srv6_end_m_gtp6_dt (u8 * s, va_list * args)
   return s;
 }
 
+void
+alloc_param_srv6_end_m_gtp6_dt (void **plugin_mem_p, const u32 fib_index,
+				const u32 local_fib_index, const u32 type)
+{
+  srv6_end_gtp6_dt_param_t *ls_mem;
+  ls_mem = clib_mem_alloc (sizeof *ls_mem);
+  clib_memset (ls_mem, 0, sizeof *ls_mem);
+  *plugin_mem_p = ls_mem;
+
+  ls_mem->fib4_index = fib_table_find (FIB_PROTOCOL_IP4, fib_index);
+  ls_mem->fib6_index = fib_table_find (FIB_PROTOCOL_IP6, fib_index);
+
+  if (type == SRV6_GTP6_DT6 || type == SRV6_GTP6_DT46)
+    {
+      ls_mem->local_fib_index =
+	fib_table_find (FIB_PROTOCOL_IP6, local_fib_index);
+    }
+
+  ls_mem->type = type;
+}
+
 static uword
 clb_unformat_srv6_end_m_gtp6_dt (unformat_input_t * input, va_list * args)
 {
   void **plugin_mem_p = va_arg (*args, void **);
-  srv6_end_gtp6_dt_param_t *ls_mem;
   u32 fib_index = 0;
   u32 local_fib_index = 0;
   u32 type;
@@ -111,22 +131,8 @@ clb_unformat_srv6_end_m_gtp6_dt (unformat_input_t * input, va_list * args)
     {
       return 0;
     }
-
-  ls_mem = clib_mem_alloc (sizeof *ls_mem);
-  clib_memset (ls_mem, 0, sizeof *ls_mem);
-  *plugin_mem_p = ls_mem;
-
-  ls_mem->fib4_index = fib_table_find (FIB_PROTOCOL_IP4, fib_index);
-  ls_mem->fib6_index = fib_table_find (FIB_PROTOCOL_IP6, fib_index);
-
-  if (type == SRV6_GTP6_DT6 || type == SRV6_GTP6_DT46)
-    {
-      ls_mem->local_fib_index =
-	fib_table_find (FIB_PROTOCOL_IP6, local_fib_index);
-    }
-
-  ls_mem->type = type;
-
+  alloc_param_srv6_end_m_gtp6_dt (plugin_mem_p, fib_index, local_fib_index,
+				  type);
   return 1;
 }
 
diff --git a/src/plugins/srv6-mobile/gtp6_e.c b/src/plugins/srv6-mobile/gtp6_e.c
index feaaaf95419..49b1bd1a6d9 100644
--- a/src/plugins/srv6-mobile/gtp6_e.c
+++ b/src/plugins/srv6-mobile/gtp6_e.c
@@ -76,16 +76,10 @@ clb_format_srv6_end_m_gtp6_e (u8 * s, va_list * args)
   return s;
 }
 
-static uword
-clb_unformat_srv6_end_m_gtp6_e (unformat_input_t * input, va_list * args)
+void
+alloc_param_srv6_end_m_gtp6_e (void **plugin_mem_p, const u32 fib_table)
 {
-  void **plugin_mem_p = va_arg (*args, void **);
   srv6_end_gtp6_e_param_t *ls_mem;
-  u32 fib_table;
-
-  if (!unformat (input, "end.m.gtp6.e fib-table %d", &fib_table))
-    return 0;
-
   ls_mem = clib_mem_alloc (sizeof *ls_mem);
   clib_memset (ls_mem, 0, sizeof *ls_mem);
   *plugin_mem_p = ls_mem;
@@ -93,6 +87,18 @@ clb_unformat_srv6_end_m_gtp6_e (unformat_input_t * input, va_list * args)
   ls_mem->fib_table = fib_table;
   ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
   ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
+}
+
+static uword
+clb_unformat_srv6_end_m_gtp6_e (unformat_input_t *input, va_list *args)
+{
+  void **plugin_mem_p = va_arg (*args, void **);
+  u32 fib_table;
+
+  if (!unformat (input, "end.m.gtp6.e fib-table %d", &fib_table))
+    return 0;
+
+  alloc_param_srv6_end_m_gtp6_e (plugin_mem_p, fib_table);
 
   return 1;
 }
diff --git a/src/plugins/srv6-mobile/mobile.h b/src/plugins/srv6-mobile/mobile.h
index 5f6064ff10b..921abc90db2 100644
--- a/src/plugins/srv6-mobile/mobile.h
+++ b/src/plugins/srv6-mobile/mobile.h
@@ -71,6 +71,28 @@
 #define GTPU_IE_MAX_SIZ			256
 #define SRH_TLV_USER_PLANE_CONTAINER	0x0a	/* tentative */
 
+typedef enum mobile_policy_function_list
+{
+  SRV6_MOBILE_POLICY_UNKNOWN_FUNCTION = 0,
+  SRV6_MOBILE_POLICY_T_M_GTP4_D,
+  SRV6_MOBILE_POLICY_T_M_GTP4_DT4,
+  SRV6_MOBILE_POLICY_T_M_GTP4_DT6,
+  SRV6_MOBILE_POLICY_T_M_GTP4_DT46,
+  SRV6_MOBILE_POLICY_END_M_GTP6_D,
+} mobile_policy_function_list_t;
+
+typedef enum mobile_localsid_function_list
+{
+  SRV6_MOBILE_LOCALSID_UNKNOWN_FUNCTION = 0,
+  SRV6_MOBILE_LOCALSID_END_M_GTP4_E,
+  SRV6_MOBILE_LOCALSID_END_M_GTP6_E,
+  SRV6_MOBILE_LOCALSID_END_M_GTP6_D,
+  SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DI,
+  SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT4,
+  SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT6,
+  SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT46,
+} mobile_localsid_function_list_t;
+
 /* *INDENT-OFF* */
 typedef struct
 {
diff --git a/src/plugins/srv6-mobile/sr_mobile.api b/src/plugins/srv6-mobile/sr_mobile.api
new file mode 100644
index 00000000000..1487085a695
--- /dev/null
+++ b/src/plugins/srv6-mobile/sr_mobile.api
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2022 BBSakura Networks Inc 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";
+import "vnet/ip/ip_types.api";
+import "vnet/srv6/sr_types.api";
+import "vnet/srv6/sr.api";
+import "plugins/srv6-mobile/sr_mobile_types.api";
+
+/** \brief IPv6 SR for Mobile LocalSID add/del request
+  @param client_index - opaque cookie to identify the sender
+  @param context - sender context, to match reply w/ request
+  @param is_del - Boolean of whether its a delete instruction
+  @param localsid_prefix - IPv6 address of the localsid
+  @param behavior - the behavior of the SR policy.
+  @param fib_table - FIB table in which we should install the localsid entry
+  @param local_fib_table - lookup and forward GTP-U packet based on outer IP destination address. optional
+  @param drop_in - that reconverts to GTPv1 mode. optional
+  @param nhtype - next-header type. optional.
+  @param sr_prefix - v6 src ip encoding prefix.optional.
+  @param v4src_position - bit position where IPv4 src address embedded. optional.
+*/
+autoreply define sr_mobile_localsid_add_del
+{
+  u32 client_index;
+  u32 context;
+  bool is_del [default=false];
+  vl_api_ip6_prefix_t localsid_prefix;
+  string behavior[64];
+  u32 fib_table;
+  u32 local_fib_table;
+  bool drop_in;
+  vl_api_sr_mobile_nhtype_t nhtype;
+  vl_api_ip6_prefix_t sr_prefix;
+  vl_api_ip4_address_t v4src_addr;
+  u32 v4src_position;
+};
+
+/** \brief IPv6 SR for Mobile policy add
+  @param client_index - opaque cookie to identify the sender
+  @param context - sender context, to match reply w/ request
+  @param bsid - the bindingSID of the SR Policy
+  @param sr_prefix - v6 dst ip encoding prefix. optional
+  @param v6src_position - v6 src prefix. optional
+  @param behavior - the behavior of the SR policy.
+  @param fib_table - the VRF where to install the FIB entry for the BSID
+  @param encap_src is a encaps IPv6 source addr. optional
+  @param local_fib_table - lookup and forward GTP-U packet based on outer IP destination address. optional
+  @param drop_in - that reconverts to GTPv1 mode. optional
+  @param nhtype - next-header type.
+*/
+autoreply define sr_mobile_policy_add
+{
+  u32 client_index;
+  u32 context;
+  vl_api_ip6_address_t bsid_addr;
+  vl_api_ip6_prefix_t sr_prefix;
+  vl_api_ip6_prefix_t v6src_prefix;
+  string behavior[64];
+  u32 fib_table;
+  u32 local_fib_table;
+  vl_api_ip6_address_t encap_src;
+  bool drop_in;
+  vl_api_sr_mobile_nhtype_t nhtype;
+};
diff --git a/src/plugins/srv6-mobile/sr_mobile_api.c b/src/plugins/srv6-mobile/sr_mobile_api.c
new file mode 100644
index 00000000000..51199317a3b
--- /dev/null
+++ b/src/plugins/srv6-mobile/sr_mobile_api.c
@@ -0,0 +1,339 @@
+/*
+ *------------------------------------------------------------------
+ * sr_mobile_api.c - ipv6 segment routing for mobile u-plane api
+ *
+ * Copyright (c) 2022 BBSakura Networks Inc 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 <stdint.h>
+#include <vnet/vnet.h>
+#include <vnet/srv6/sr.h>
+#include <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/feature/feature.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ip/ip_types_api.h>
+
+#include <vnet/format_fns.h>
+#include <vnet/srv6/sr.api_enum.h>
+#include <vnet/srv6/sr.api_types.h>
+
+#include <srv6-mobile/mobile.h>
+#include <srv6-mobile/sr_mobile.api_types.h>
+#include <srv6-mobile/sr_mobile_types.api_types.h>
+#include <srv6-mobile/sr_mobile.api_enum.h>
+
+#include <srv6-mobile/sr_mobile_api.h>
+
+u16 msg_id_base;
+#define REPLY_MSG_ID_BASE msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static inline uint16_t
+sr_plugin_localsid_fn_num_find_by (ip6_sr_main_t *sm, const char *keyword_str,
+				   size_t keyword_len)
+{
+  sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
+  sr_localsid_fn_registration_t **plugin_it = 0;
+  pool_foreach (plugin, sm->plugin_functions)
+    {
+      vec_add1 (vec_plugins, plugin);
+    }
+
+  vec_foreach (plugin_it, vec_plugins)
+    {
+      if (!srv6_mobile_strcmp_with_size (keyword_str, keyword_len,
+					 (char *) (*plugin_it)->keyword_str))
+	{
+	  return (*plugin_it)->sr_localsid_function_number;
+	}
+    }
+  return UINT16_MAX;
+}
+
+static inline uint16_t
+sr_plugin_policy_fn_num_find_by (ip6_sr_main_t *sm, const char *keyword_str,
+				 size_t keyword_len)
+{
+  sr_policy_fn_registration_t *plugin = 0, **vec_plugins = 0;
+  sr_policy_fn_registration_t **plugin_it = 0;
+  pool_foreach (plugin, sm->policy_plugin_functions)
+    {
+      vec_add1 (vec_plugins, plugin);
+    }
+
+  vec_foreach (plugin_it, vec_plugins)
+    {
+      if (!srv6_mobile_strcmp_with_size (keyword_str, keyword_len,
+					 (char *) (*plugin_it)->keyword_str))
+	{
+	  return (*plugin_it)->sr_policy_function_number;
+	}
+    }
+  return UINT16_MAX;
+}
+
+static void
+vl_api_sr_mobile_localsid_add_del_t_handler (
+  vl_api_sr_mobile_localsid_add_del_t *mp)
+{
+  ip6_sr_main_t *sm = &sr_main;
+  vl_api_sr_mobile_localsid_add_del_reply_t *rmp;
+  int rv = 0;
+  ip6_address_t localsid;
+  u16 localsid_prefix_len = 128;
+  void *ls_plugin_mem = 0;
+  u16 behavior = 0;
+  u32 dt_type;
+  size_t behavior_size = 0;
+  mobile_localsid_function_list_t kind_fn =
+    SRV6_MOBILE_LOCALSID_UNKNOWN_FUNCTION;
+
+  mp->behavior[sizeof (mp->behavior) - 1] = '\0';
+  behavior_size = sizeof (mp->behavior);
+  // search behavior index
+  if (mp->behavior[0])
+    {
+      if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior, behavior_size,
+					 "end.m.gtp4.e"))
+	{
+	  kind_fn = SRV6_MOBILE_LOCALSID_END_M_GTP4_E;
+	}
+      else if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior,
+					      behavior_size, "end.m.gtp6.e"))
+	{
+	  kind_fn = SRV6_MOBILE_LOCALSID_END_M_GTP6_E;
+	}
+      else if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior,
+					      behavior_size, "end.m.gtp6.d"))
+	{
+	  kind_fn = SRV6_MOBILE_LOCALSID_END_M_GTP6_D;
+	}
+      else if (!srv6_mobile_strcmp_with_size (
+		 (char *) mp->behavior, behavior_size, "end.m.gtp6.d.di"))
+	{
+	  kind_fn = SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DI;
+	}
+      else if (!srv6_mobile_strcmp_with_size (
+		 (char *) mp->behavior, behavior_size, "end.m.gtp6.d.dt4"))
+	{
+	  kind_fn = SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT4;
+	  dt_type = SRV6_GTP6_DT4;
+	}
+      else if (!srv6_mobile_strcmp_with_size (
+		 (char *) mp->behavior, behavior_size, "end.m.gtp6.d.dt6"))
+	{
+	  kind_fn = SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT6;
+	  dt_type = SRV6_GTP6_DT6;
+	}
+      else if (!srv6_mobile_strcmp_with_size (
+		 (char *) mp->behavior, behavior_size, "end.m.gtp6.d.dt46"))
+	{
+	  kind_fn = SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT46;
+	  dt_type = SRV6_GTP6_DT46;
+	}
+      else
+	{
+	  return;
+	}
+      switch (kind_fn)
+	{
+	case SRV6_MOBILE_LOCALSID_END_M_GTP4_E:
+	  alloc_param_srv6_end_m_gtp4_e (&ls_plugin_mem, &mp->v4src_addr,
+					 ntohl (mp->v4src_position),
+					 ntohl (mp->fib_table));
+	  break;
+	case SRV6_MOBILE_LOCALSID_END_M_GTP6_E:
+	  alloc_param_srv6_end_m_gtp6_e (&ls_plugin_mem,
+					 ntohl (mp->fib_table));
+	  break;
+	case SRV6_MOBILE_LOCALSID_END_M_GTP6_D:
+	  alloc_param_srv6_end_m_gtp6_d (
+	    &ls_plugin_mem, &mp->sr_prefix.address, mp->sr_prefix.len,
+	    (u8) ntohl (mp->nhtype), mp->drop_in, ntohl (mp->fib_table));
+	  break;
+	case SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DI:
+	  alloc_param_srv6_end_m_gtp6_di (
+	    &ls_plugin_mem, &mp->sr_prefix.address, mp->sr_prefix.len,
+	    (u8) ntohl (mp->nhtype));
+	  break;
+	case SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT4:
+	case SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT6:
+	case SRV6_MOBILE_LOCALSID_END_M_GTP6_D_DT46:
+	  alloc_param_srv6_end_m_gtp6_dt (
+	    &ls_plugin_mem, ntohl (mp->fib_table), ntohl (mp->local_fib_table),
+	    dt_type);
+	  break;
+	case SRV6_MOBILE_LOCALSID_UNKNOWN_FUNCTION:
+	default:
+	  return; // error
+	}
+      behavior = sr_plugin_localsid_fn_num_find_by (sm, (char *) mp->behavior,
+						    behavior_size);
+      if (behavior == UINT16_MAX)
+	return;
+    }
+  else
+    {
+      return;
+    }
+  ip6_address_decode (mp->localsid_prefix.address, &localsid);
+  localsid_prefix_len = mp->localsid_prefix.len;
+
+  rv = sr_cli_localsid (mp->is_del, &localsid, localsid_prefix_len,
+			0, // ignore end_psp
+			behavior,
+			0, // ignore sw_if_index
+			0, // ignore vlan_index
+			ntohl (mp->fib_table),
+			NULL, // ignore nh_addr
+			0,    // ignore usid_len
+			ls_plugin_mem);
+
+  REPLY_MACRO (VL_API_SR_MOBILE_LOCALSID_ADD_DEL_REPLY);
+}
+
+static void
+vl_api_sr_mobile_policy_add_t_handler (vl_api_sr_mobile_policy_add_t *mp)
+{
+  ip6_sr_main_t *sm = &sr_main;
+  vl_api_sr_mobile_policy_add_reply_t *rmp;
+  ip6_address_t bsid_addr;
+  ip6_address_t encap_src;
+  void *ls_plugin_mem = 0;
+  u16 behavior = 0;
+  size_t behavior_size = 0;
+
+  u32 dt_type;
+  mobile_policy_function_list_t kind_fn = SRV6_MOBILE_POLICY_UNKNOWN_FUNCTION;
+
+  ip6_address_decode (mp->bsid_addr, &bsid_addr);
+  ip6_address_decode (mp->encap_src, &encap_src);
+  if (ip6_address_is_zero (&encap_src))
+    {
+      encap_src = *sr_get_encaps_source ();
+    }
+  mp->behavior[sizeof (mp->behavior) - 1] = '\0';
+  behavior_size = sizeof (mp->behavior);
+
+  // search behavior index
+  if (mp->behavior[0])
+    {
+      if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior, behavior_size,
+					 "t.m.gtp4.d"))
+	{
+	  kind_fn = SRV6_MOBILE_POLICY_T_M_GTP4_D;
+	}
+      else if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior,
+					      behavior_size, "t.m.gtp4.dt4"))
+	{
+	  kind_fn = SRV6_MOBILE_POLICY_T_M_GTP4_DT4;
+	  dt_type = SRV6_GTP4_DT4;
+	}
+      else if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior,
+					      behavior_size, "t.m.gtp4.dt6"))
+	{
+	  kind_fn = SRV6_MOBILE_POLICY_T_M_GTP4_DT6;
+	  dt_type = SRV6_GTP4_DT6;
+	}
+      else if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior,
+					      behavior_size, "t.m.gtp4.dt46"))
+	{
+	  kind_fn = SRV6_MOBILE_POLICY_T_M_GTP4_DT46;
+	  dt_type = SRV6_GTP4_DT46;
+	}
+      else if (!srv6_mobile_strcmp_with_size ((char *) mp->behavior,
+					      behavior_size, "end.m.gtp6.d"))
+	{
+	  kind_fn = SRV6_MOBILE_POLICY_END_M_GTP6_D;
+	}
+      else
+	{
+	  return;
+	}
+
+      switch (kind_fn)
+	{
+	case SRV6_MOBILE_POLICY_T_M_GTP4_D:
+	  alloc_param_srv6_t_m_gtp4_d (
+	    &ls_plugin_mem, &mp->v6src_prefix.address, mp->v6src_prefix.len,
+	    &mp->sr_prefix.address, mp->sr_prefix.len, ntohl (mp->fib_table),
+	    mp->nhtype, mp->drop_in);
+	  break;
+	case SRV6_MOBILE_POLICY_END_M_GTP6_D:
+	  alloc_param_srv6_end_m_gtp6_d (
+	    &ls_plugin_mem, &mp->sr_prefix.address, mp->sr_prefix.len,
+	    mp->nhtype, mp->drop_in, ntohl (mp->fib_table));
+	  break;
+	case SRV6_MOBILE_POLICY_T_M_GTP4_DT4:
+	case SRV6_MOBILE_POLICY_T_M_GTP4_DT6:
+	case SRV6_MOBILE_POLICY_T_M_GTP4_DT46:
+	  alloc_param_srv6_t_m_gtp4_dt (&ls_plugin_mem, ntohl (mp->fib_table),
+					ntohl (mp->local_fib_table), dt_type);
+	  break;
+	case SRV6_MOBILE_POLICY_UNKNOWN_FUNCTION:
+	default:
+	  return; // error
+	}
+
+      behavior = sr_plugin_policy_fn_num_find_by (sm, (char *) mp->behavior,
+						  behavior_size);
+      if (behavior == UINT16_MAX)
+	return;
+    }
+  else
+    {
+      return;
+    }
+
+  int rv = 0;
+  ip6_address_t *segments = 0, *this_seg;
+  vec_add2 (segments, this_seg, 1);
+  clib_memset (this_seg, 0, sizeof (*this_seg));
+
+  rv = sr_policy_add (&bsid_addr,
+		      segments, // ignore segments
+		      &encap_src,
+		      (u32) ~0,		      // ignore weight
+		      SR_POLICY_TYPE_DEFAULT, // ignore type
+		      (u32) ~0,		      // ignore fib_table
+		      1,		      // ignore is_encap,
+		      behavior, ls_plugin_mem);
+  vec_free (segments);
+  REPLY_MACRO (VL_API_SR_MOBILE_POLICY_ADD_REPLY);
+}
+
+#include <srv6-mobile/sr_mobile.api.c>
+static clib_error_t *
+sr_mobile_api_hookup (vlib_main_t *vm)
+{
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  REPLY_MSG_ID_BASE = setup_message_id_table ();
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (sr_mobile_api_hookup);
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/srv6-mobile/sr_mobile_api.h b/src/plugins/srv6-mobile/sr_mobile_api.h
new file mode 100644
index 00000000000..28979b1875c
--- /dev/null
+++ b/src/plugins/srv6-mobile/sr_mobile_api.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2022 BBSakura Networks Inc 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.
+ */
+
+/**
+ * @file
+ * @brief Segment Routing for mobile u-plane api
+ *
+ */
+
+#ifndef included_sr_mobile_api_h
+#define included_sr_mobile_api_h
+#include <stdint.h>
+#include <vnet/srv6/sr.h>
+#include <vnet/ip/ip_types_api.h>
+
+#define srv6_mobile_strcmp_with_size(s1, s1len, s2)                           \
+  ({                                                                          \
+    int __indicator = 0;                                                      \
+    strcmp_s_inline (s1, s1len, s2, &__indicator);                            \
+    __indicator;                                                              \
+  })
+
+void alloc_param_srv6_end_m_gtp4_e (void **plugin_mem_p,
+				    const void *v4src_addr,
+				    const u32 v4src_position,
+				    const u32 fib_table);
+
+void alloc_param_srv6_end_m_gtp6_e (void **plugin_mem_p, const u32 fib_table);
+
+void alloc_param_srv6_end_m_gtp6_d (void **plugin_mem_p, const void *sr_prefix,
+				    const u32 sr_prefixlen, const u8 nhtype,
+				    const bool drop_in, const u32 fib_table);
+
+void alloc_param_srv6_end_m_gtp6_di (void **plugin_mem_p,
+				     const void *sr_prefix,
+				     const u32 sr_prefixlen, const u8 nhtype);
+
+void alloc_param_srv6_end_m_gtp6_dt (void **plugin_mem_p, const u32 fib_index,
+				     const u32 local_fib_index,
+				     const u32 type);
+
+void alloc_param_srv6_t_m_gtp4_d (void **plugin_mem_p,
+				  const void *v6src_prefix,
+				  const u32 v6src_prefixlen,
+				  const void *sr_prefix,
+				  const u32 sr_prefixlen, const u32 fib_index,
+				  const u8 nhtype, const bool drop_in);
+
+void alloc_param_srv6_t_m_gtp4_dt (void **plugin_mem_p, const u32 fib_index,
+				   const u32 local_fib_index, const u8 type);
+
+#endif /* included_sr_mobile_api_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/srv6-mobile/sr_mobile_types.api b/src/plugins/srv6-mobile/sr_mobile_types.api
new file mode 100644
index 00000000000..f2dbe302d00
--- /dev/null
+++ b/src/plugins/srv6-mobile/sr_mobile_types.api
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2022 BBSakura Networks Inc 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";
+
+enum sr_mobile_nhtype : u8
+{
+  SRV6_NHTYPE_API_NONE = 0,
+  SRV6_NHTYPE_API_IPV4 = 1,
+  SRV6_NHTYPE_API_IPV6 = 2,
+  SRV6_NHTYPE_API_NON_IP = 3,
+};
\ No newline at end of file