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 <nhtype>]";
74 clb_format_srv6_t_m_gtp4_d (u8 * s, va_list * args)
76 srv6_end_gtp4_param_t *ls_mem = va_arg (*args, void *);
78 s = format (s, "SRv6 T.M.GTP4.D\n\t");
81 format (s, "SR Prefix: %U/%d, ", format_ip6_address, &ls_mem->sr_prefix,
82 ls_mem->sr_prefixlen);
85 format (s, "v6src Prefix: %U/%d", format_ip6_address,
86 &ls_mem->v6src_prefix, ls_mem->v6src_prefixlen);
88 if (ls_mem->nhtype != SRV6_NHTYPE_NONE)
90 if (ls_mem->nhtype == SRV6_NHTYPE_IPV4)
91 s = format (s, ", NHType IPv4\n");
92 else if (ls_mem->nhtype == SRV6_NHTYPE_IPV6)
93 s = format (s, ", NHType IPv6\n");
94 else if (ls_mem->nhtype == SRV6_NHTYPE_NON_IP)
95 s = format (s, ", NHType Non-IP\n");
97 s = format (s, ", NHType Unknow(%d)\n", ls_mem->nhtype);
100 s = format (s, "\n");
106 clb_unformat_srv6_t_m_gtp4_d (unformat_input_t * input, va_list * args)
108 void **plugin_mem_p = va_arg (*args, void **);
109 srv6_end_gtp4_param_t *ls_mem;
110 ip6_address_t sr_prefix;
112 ip6_address_t v6src_prefix;
116 if (unformat (input, "t.m.gtp4.d %U/%d v6src_prefix %U/%d nhtype ipv4",
117 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
118 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen))
120 nhtype = SRV6_NHTYPE_IPV4;
124 (input, "t.m.gtp4.d %U/%d v6src_prefix %U/%d nhtype ipv6",
125 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
126 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen))
128 nhtype = SRV6_NHTYPE_IPV6;
132 (input, "t.m.gtp4.d %U/%d v6src_prefix %U/%d nhtype non-ip",
133 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
134 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen))
136 nhtype = SRV6_NHTYPE_NON_IP;
138 else if (unformat (input, "t.m.gtp4.d %U/%d v6src_prefix %U/%d",
139 unformat_ip6_address, &sr_prefix, &sr_prefixlen,
140 unformat_ip6_address, &v6src_prefix, &v6src_prefixlen))
142 nhtype = SRV6_NHTYPE_NONE;
149 ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1);
150 clib_memset (ls_mem, 0, sizeof *ls_mem);
151 *plugin_mem_p = ls_mem;
153 ls_mem->sr_prefix = sr_prefix;
154 ls_mem->sr_prefixlen = sr_prefixlen;
156 ls_mem->v6src_prefix = v6src_prefix;
157 ls_mem->v6src_prefixlen = v6src_prefixlen;
159 ls_mem->nhtype = nhtype;
165 clb_creation_srv6_t_m_gtp4_d (ip6_sr_policy_t * sr_policy)
171 clb_removal_srv6_t_m_gtp4_d (ip6_sr_policy_t * sr_policy)
173 srv6_end_gtp4_param_t *ls_mem;
175 ls_mem = (srv6_end_gtp4_param_t *) sr_policy->plugin_mem;
177 clib_mem_free (ls_mem);
182 static clib_error_t *
183 srv6_t_m_gtp4_d_init (vlib_main_t * vm)
185 srv6_t_main_v4_decap_t *sm = &srv6_t_main_v4_decap;
192 sm->vnet_main = vnet_get_main ();
194 node = vlib_get_node_by_name (vm, (u8 *) "srv6-t-m-gtp4-d");
195 sm->t_m_gtp4_d_node_index = node->index;
197 node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
198 sm->error_node_index = node->index;
200 ip6 = &sm->cache_hdr;
202 clib_memset_u8 (ip6, 0, sizeof (ip6_header_t));
204 // IPv6 header (default)
205 ip6->ip_version_traffic_class_and_flow_label = 0x60;
207 ip6->protocol = IP_PROTOCOL_IPV6;
209 dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);
211 rc = sr_policy_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len
213 clb_format_srv6_t_m_gtp4_d,
214 clb_unformat_srv6_t_m_gtp4_d,
215 clb_creation_srv6_t_m_gtp4_d,
216 clb_removal_srv6_t_m_gtp4_d);
218 clib_error_return (0, "SRv6 Transit GTP4.D Policy function"
219 "couldn't be registered");
224 VNET_FEATURE_INIT (srv6_t_m_gtp4_d, static) =
226 .arc_name = "ip4-unicast",
227 .node_name = "srv6-t-m-gtp4-d",
231 VLIB_INIT_FUNCTION (srv6_t_m_gtp4_d_init);
235 * fd.io coding-style-patch-verification: ON
238 * eval: (c-set-style "gnu")