4 * Copyright (c) 2019 Arrcus Inc and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/adj/adj.h>
20 #include <vnet/plugin/plugin.h>
21 #include <vpp/app/version.h>
22 #include <srv6-mobile/mobile.h>
24 srv6_t_main_v4_decap_t srv6_t_main_v4_decap;
27 clb_dpo_lock_srv6_t_m_gtp4_d (dpo_id_t * dpo)
32 clb_dpo_unlock_srv6_t_m_gtp4_d (dpo_id_t * dpo)
37 clb_dpo_format_srv6_t_m_gtp4_d (u8 * s, va_list * args)
39 index_t index = va_arg (*args, index_t);
40 CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
42 return (format (s, "SR: dynamic_proxy_index:[%u]", index));
45 const static dpo_vft_t dpo_vft = {
46 .dv_lock = clb_dpo_lock_srv6_t_m_gtp4_d,
47 .dv_unlock = clb_dpo_unlock_srv6_t_m_gtp4_d,
48 .dv_format = clb_dpo_format_srv6_t_m_gtp4_d,
51 const static char *const srv6_t_m_gtp4_d_nodes[] = {
56 const static char *const srv6_t_m_gtp4_d_v6_nodes[] = {
61 const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
62 [DPO_PROTO_IP6] = srv6_t_m_gtp4_d_v6_nodes,
63 [DPO_PROTO_IP4] = srv6_t_m_gtp4_d_nodes,
66 static u8 fn_name[] = "SRv6-T.M.GTP4.D-plugin";
67 static u8 keyword_str[] = "t.m.gtp4.d";
69 "Transit function with decapsulation for IPv4/GTP tunnel";
70 static u8 param_str[] =
71 "<sr-prefix>/<sr-prefixlen> v6src_prefix <v6src_prefix>/<prefixlen> [nhtype "
72 "<nhtype>] fib-table <id>";
75 clb_format_srv6_t_m_gtp4_d (u8 * s, va_list * args)
77 srv6_end_gtp4_d_param_t *ls_mem = va_arg (*args, void *);
79 s = format (s, "SRv6 T.M.GTP4.D\n\t");
82 format (s, "SR Prefix: %U/%d, ", format_ip6_address, &ls_mem->sr_prefix,
83 ls_mem->sr_prefixlen);
86 format (s, "v6src Prefix: %U/%d", format_ip6_address,
87 &ls_mem->v6src_prefix, ls_mem->v6src_prefixlen);
89 if (ls_mem->nhtype != SRV6_NHTYPE_NONE)
91 if (ls_mem->nhtype == SRV6_NHTYPE_IPV4)
92 s = format (s, ", NHType IPv4");
93 else if (ls_mem->nhtype == SRV6_NHTYPE_IPV6)
94 s = format (s, ", NHType IPv6");
95 else if (ls_mem->nhtype == SRV6_NHTYPE_NON_IP)
96 s = format (s, ", NHType Non-IP");
98 s = format (s, ", NHType Unknow(%d)", ls_mem->nhtype);
101 s = format (s, ", FIB table %d", ls_mem->fib_table);
103 s = format (s, ", Drop In %d\n", ls_mem->drop_in);
109 alloc_param_srv6_t_m_gtp4_d (void **plugin_mem_p, const void *v6src_prefix,
110 const u32 v6src_prefixlen, const void *sr_prefix,
111 const u32 sr_prefixlen, const u32 fib_index,
112 const u8 nhtype, const bool drop_in)
114 srv6_end_gtp4_d_param_t *ls_mem;
115 ls_mem = clib_mem_alloc (sizeof *ls_mem);
116 clib_memset (ls_mem, 0, sizeof *ls_mem);
117 *plugin_mem_p = ls_mem;
119 ls_mem->v6src_prefixlen = v6src_prefixlen;
120 memcpy (&ls_mem->v6src_prefix, v6src_prefix, sizeof (ip6_address_t));
121 ls_mem->sr_prefixlen = sr_prefixlen;
122 memcpy (&ls_mem->sr_prefix, sr_prefix, sizeof (ip6_address_t));
124 ls_mem->nhtype = nhtype;
125 ls_mem->drop_in = drop_in;
126 ls_mem->fib_table = fib_index;
127 ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_index);
128 ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_index);
132 clb_unformat_srv6_t_m_gtp4_d (unformat_input_t * input, va_list * args)
134 void **plugin_mem_p = va_arg (*args, void **);
135 ip6_address_t sr_prefix;
137 ip6_address_t v6src_prefix;
140 bool drop_in = false;
141 u8 nhtype = SRV6_NHTYPE_NONE;
144 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
148 "t.m.gtp4.d %U/%d v6src_prefix %U/%d nhtype ipv4 fib-table %d",
149 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
150 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen, &fib_table))
153 nhtype = SRV6_NHTYPE_IPV4;
155 else if (unformat (input,
156 "t.m.gtp4.d %U/%d v6src_prefix %U/%d nhtype ipv6 "
158 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
159 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen,
163 nhtype = SRV6_NHTYPE_IPV6;
166 input, "t.m.gtp4.d %U/%d v6src_prefix %U/%d nhtype non-ip",
167 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
168 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen))
171 nhtype = SRV6_NHTYPE_NON_IP;
173 else if (unformat (input,
174 "t.m.gtp4.d %U/%d v6src_prefix %U/%d fib-table %d",
175 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
176 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen,
180 nhtype = SRV6_NHTYPE_NONE;
182 else if (unformat (input, "drop-in"))
197 alloc_param_srv6_t_m_gtp4_d (plugin_mem_p, &v6src_prefix, v6src_prefixlen,
198 &sr_prefix, sr_prefixlen, fib_table, nhtype,
205 clb_creation_srv6_t_m_gtp4_d (ip6_sr_policy_t * sr_policy)
211 clb_removal_srv6_t_m_gtp4_d (ip6_sr_policy_t * sr_policy)
213 srv6_end_gtp4_d_param_t *ls_mem;
215 ls_mem = (srv6_end_gtp4_d_param_t *) sr_policy->plugin_mem;
217 clib_mem_free (ls_mem);
222 static clib_error_t *
223 srv6_t_m_gtp4_d_init (vlib_main_t * vm)
225 srv6_t_main_v4_decap_t *sm = &srv6_t_main_v4_decap;
232 sm->vnet_main = vnet_get_main ();
234 node = vlib_get_node_by_name (vm, (u8 *) "srv6-t-m-gtp4-d");
235 sm->t_m_gtp4_d_node_index = node->index;
237 node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
238 sm->error_node_index = node->index;
240 ip6 = &sm->cache_hdr;
242 clib_memset_u8 (ip6, 0, sizeof (ip6_header_t));
244 // IPv6 header (default)
245 ip6->ip_version_traffic_class_and_flow_label = 0x60;
247 ip6->protocol = IP_PROTOCOL_IPV6;
249 dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);
251 rc = sr_policy_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len
253 clb_format_srv6_t_m_gtp4_d,
254 clb_unformat_srv6_t_m_gtp4_d,
255 clb_creation_srv6_t_m_gtp4_d,
256 clb_removal_srv6_t_m_gtp4_d);
258 clib_error_return (0, "SRv6 Transit GTP4.D Policy function"
259 "couldn't be registered");
263 VNET_FEATURE_INIT (srv6_t_m_gtp4_d, static) =
265 .arc_name = "ip4-unicast",
266 .node_name = "srv6-t-m-gtp4-d",
270 VLIB_INIT_FUNCTION (srv6_t_m_gtp4_d_init);
273 * fd.io coding-style-patch-verification: ON
276 * eval: (c-set-style "gnu")