Line data Source code
1 : /*
2 : * srv6_end_m_gtp6_e.c
3 : *
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:
8 : *
9 : * http://www.apache.org/licenses/LICENSE-2.0
10 : *
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.
16 : */
17 :
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>
23 :
24 : srv6_end_main_v6_t srv6_end_main_v6;
25 :
26 : static void
27 6 : clb_dpo_lock_srv6_end_m_gtp6_e (dpo_id_t * dpo)
28 : {
29 6 : }
30 :
31 : static void
32 3 : clb_dpo_unlock_srv6_end_m_gtp6_e (dpo_id_t * dpo)
33 : {
34 3 : }
35 :
36 : static u8 *
37 0 : clb_dpo_format_srv6_end_m_gtp6_e (u8 * s, va_list * args)
38 : {
39 0 : index_t index = va_arg (*args, index_t);
40 0 : CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
41 :
42 0 : return (format (s, "SR: dynamic_proxy_index:[%u]", index));
43 : }
44 :
45 : const static dpo_vft_t dpo_vft = {
46 : .dv_lock = clb_dpo_lock_srv6_end_m_gtp6_e,
47 : .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp6_e,
48 : .dv_format = clb_dpo_format_srv6_end_m_gtp6_e,
49 : };
50 :
51 : const static char *const srv6_end_m_gtp6_e_nodes[] = {
52 : "srv6-end-m-gtp6-e",
53 : NULL,
54 : };
55 :
56 : const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
57 : [DPO_PROTO_IP6] = srv6_end_m_gtp6_e_nodes,
58 : };
59 :
60 : static u8 fn_name[] = "SRv6-End.M.GTP6.E-plugin";
61 : static u8 keyword_str[] = "end.m.gtp6.e";
62 : static u8 def_str[] =
63 : "Endpoint function with encapsulation for IPv6/GTP tunnel";
64 : static u8 param_str[] = "";
65 :
66 : static u8 *
67 1 : clb_format_srv6_end_m_gtp6_e (u8 * s, va_list * args)
68 : {
69 1 : srv6_end_gtp6_e_param_t *ls_mem = va_arg (*args, void *);
70 : ;
71 :
72 1 : s = format (s, "SRv6 End.M.GTP6.E function.");
73 :
74 1 : s = format (s, "\tFib Table %d\n", ls_mem->fib_table);
75 :
76 1 : return s;
77 : }
78 :
79 : static uword
80 2 : clb_unformat_srv6_end_m_gtp6_e (unformat_input_t * input, va_list * args)
81 : {
82 2 : void **plugin_mem_p = va_arg (*args, void **);
83 : srv6_end_gtp6_e_param_t *ls_mem;
84 : u32 fib_table;
85 :
86 2 : if (!unformat (input, "end.m.gtp6.e fib-table %d", &fib_table))
87 1 : return 0;
88 :
89 1 : ls_mem = clib_mem_alloc (sizeof *ls_mem);
90 1 : clib_memset (ls_mem, 0, sizeof *ls_mem);
91 1 : *plugin_mem_p = ls_mem;
92 :
93 1 : ls_mem->fib_table = fib_table;
94 1 : ls_mem->fib4_index = ip4_fib_index_from_table_id (fib_table);
95 1 : ls_mem->fib6_index = ip6_fib_index_from_table_id (fib_table);
96 :
97 1 : return 1;
98 : }
99 :
100 : static int
101 1 : clb_creation_srv6_end_m_gtp6_e (ip6_sr_localsid_t * localsid)
102 : {
103 1 : return 0;
104 : }
105 :
106 : static int
107 0 : clb_removal_srv6_end_m_gtp6_e (ip6_sr_localsid_t * localsid)
108 : {
109 : srv6_end_gtp6_e_param_t *ls_mem;
110 :
111 0 : ls_mem = localsid->plugin_mem;
112 :
113 0 : clib_mem_free (ls_mem);
114 :
115 0 : return 0;
116 : }
117 :
118 : static clib_error_t *
119 575 : srv6_end_m_gtp6_e_init (vlib_main_t * vm)
120 : {
121 575 : srv6_end_main_v6_t *sm = &srv6_end_main_v6;
122 575 : ip6_header_t *ip6 = &sm->cache_hdr.ip6;
123 575 : udp_header_t *udp = &sm->cache_hdr.udp;
124 575 : gtpu_header_t *gtpu = &sm->cache_hdr.gtpu;
125 : dpo_type_t dpo_type;
126 : vlib_node_t *node;
127 : int rc;
128 :
129 575 : sm->vlib_main = vm;
130 575 : sm->vnet_main = vnet_get_main ();
131 :
132 575 : node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp6-e");
133 575 : sm->end_m_gtp6_e_node_index = node->index;
134 :
135 575 : node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
136 575 : sm->error_node_index = node->index;
137 :
138 : // clear the pre cached packet
139 575 : clib_memset_u8 (ip6, 0, sizeof (ip6_gtpu_header_t));
140 :
141 : // set defaults
142 575 : ip6->ip_version_traffic_class_and_flow_label = 0x60;
143 575 : ip6->protocol = IP_PROTOCOL_UDP;
144 575 : ip6->hop_limit = 64;
145 :
146 575 : udp->dst_port = clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT);
147 :
148 575 : gtpu->ver_flags = GTPU_V1_VER | GTPU_PT_GTP;
149 575 : gtpu->type = GTPU_TYPE_GTPU;
150 :
151 575 : dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);
152 :
153 575 : rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len
154 : &dpo_type,
155 : clb_format_srv6_end_m_gtp6_e,
156 : clb_unformat_srv6_end_m_gtp6_e,
157 : clb_creation_srv6_end_m_gtp6_e,
158 : clb_removal_srv6_end_m_gtp6_e);
159 575 : if (rc < 0)
160 0 : clib_error_return (0, "SRv6 Endpoint GTP6.E LocalSID function"
161 : "couldn't be registered");
162 575 : return 0;
163 : }
164 :
165 : /* *INDENT-OFF* */
166 14399 : VNET_FEATURE_INIT (srv6_end_m_gtp6_e, static) =
167 : {
168 : .arc_name = "ip6-unicast",
169 : .node_name = "srv6-end-m-gtp6-e",
170 : .runs_before = 0,
171 : };
172 :
173 2303 : VLIB_INIT_FUNCTION (srv6_end_m_gtp6_e_init);
174 : /* *INDENT-ON* */
175 :
176 : /*
177 : * fd.io coding-style-patch-verification: ON
178 : *
179 : * Local Variables:
180 : * eval: (c-set-style "gnu")
181 : * End:
182 : */
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