2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 #include <vnet/plugin/plugin.h>
20 * This code supports the following sixrd modes:
22 * 32 EA bits (Complete IPv4 address is embedded):
24 * IPv4 suffix is embedded:
26 * No embedded address bits (1:1 mode):
31 sixrd_create_domain (ip6_address_t *ip6_prefix,
33 ip4_address_t *ip4_prefix,
35 ip4_address_t *ip4_src,
36 u32 *sixrd_domain_index,
39 sixrd_main_t *mm = &sixrd_main;
40 ip4_main_t *im4 = &ip4_main;
41 ip6_main_t *im6 = &ip6_main;
44 ip4_add_del_route_args_t args4;
45 ip6_add_del_route_args_t args6;
48 /* Get domain index */
49 pool_get_aligned(mm->domains, d, CLIB_CACHE_LINE_BYTES);
50 memset(d, 0, sizeof (*d));
51 *sixrd_domain_index = d - mm->domains;
53 /* Init domain struct */
54 d->ip4_prefix.as_u32 = ip4_prefix->as_u32;
55 d->ip4_prefix_len = ip4_prefix_len;
56 d->ip6_prefix = *ip6_prefix;
57 d->ip6_prefix_len = ip6_prefix_len;
58 d->ip4_src = *ip4_src;
61 if (ip4_prefix_len < 32)
62 d->shift = 64 - ip6_prefix_len + (32 - ip4_prefix_len);
64 /* Init IP adjacency */
65 memset(&adj, 0, sizeof(adj));
66 adj.explicit_fib_index = ~0;
67 p = (u32 *)&adj.rewrite_data[0];
68 *p = (u32) (*sixrd_domain_index);
70 /* Create ip6 adjacency */
71 memset(&args6, 0, sizeof(args6));
72 args6.table_index_or_table_id = 0;
73 args6.flags = IP6_ROUTE_FLAG_ADD;
74 args6.dst_address.as_u64[0] = ip6_prefix->as_u64[0];
75 args6.dst_address.as_u64[1] = ip6_prefix->as_u64[1];
76 args6.dst_address_length = ip6_prefix_len;
80 adj.lookup_next_index = mm->ip6_lookup_next_index;
81 ip6_add_del_route(im6, &args6);
83 /* Multiple SIXRD domains may share same source IPv4 TEP */
84 uword *q = ip4_get_route(im4, 0, 0, (u8 *)ip4_src, 32);
87 ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
88 ip_adjacency_t *adj4 = ip_get_adjacency(lm4, ai);
89 if (adj4->lookup_next_index != mm->ip4_lookup_next_index) {
90 clib_warning("BR source address already assigned: %U", format_ip4_address, ip4_src);
91 pool_put(mm->domains, d);
95 p = (u32 *)&adj4->rewrite_data[0];
98 /* Add refcount, so we don't accidentially delete the route underneath someone */
101 /* Create ip4 adjacency. */
102 memset(&args4, 0, sizeof(args4));
103 args4.table_index_or_table_id = 0;
104 args4.flags = IP4_ROUTE_FLAG_ADD;
105 args4.dst_address.as_u32 = ip4_src->as_u32;
106 args4.dst_address_length = 32;
107 args4.adj_index = ~0;
108 args4.add_adj = &adj;
110 adj.lookup_next_index = mm->ip4_lookup_next_index;
111 ip4_add_del_route(im4, &args4);
118 * sixrd_delete_domain
121 sixrd_delete_domain (u32 sixrd_domain_index)
123 sixrd_main_t *mm = &sixrd_main;
124 ip4_main_t *im4 = &ip4_main;
125 ip6_main_t *im6 = &ip6_main;
128 ip4_add_del_route_args_t args4;
129 ip6_add_del_route_args_t args6;
131 if (pool_is_free_index(mm->domains, sixrd_domain_index)) {
132 clib_warning("SIXRD domain delete: domain does not exist: %d", sixrd_domain_index);
136 d = pool_elt_at_index(mm->domains, sixrd_domain_index);
138 memset(&adj, 0, sizeof(adj));
139 adj.explicit_fib_index = ~0;
141 /* Delete ip6 adjacency */
142 memset(&args6, 0, sizeof (args6));
143 args6.table_index_or_table_id = 0;
144 args6.flags = IP6_ROUTE_FLAG_DEL;
145 args6.dst_address.as_u64[0] = d->ip6_prefix.as_u64[0];
146 args6.dst_address.as_u64[1] = d->ip6_prefix.as_u64[1];
147 args6.dst_address_length = d->ip6_prefix_len;
149 args6.add_adj = &adj;
151 ip6_add_del_route(im6, &args6);
153 /* Delete ip4 adjacency */
154 uword *q = ip4_get_route(im4, 0, 0, (u8 *)&d->ip4_src, 32);
157 ip_lookup_main_t *lm4 = &ip4_main.lookup_main;
158 ip_adjacency_t *adj4 = ip_get_adjacency(lm4, ai);
160 u32 *p = (u32 *)&adj4->rewrite_data[0];
161 /* Delete route when no other domains use this source */
163 memset(&args4, 0, sizeof(args4));
164 args4.table_index_or_table_id = 0;
165 args4.flags = IP4_ROUTE_FLAG_DEL;
166 args4.dst_address.as_u32 = d->ip4_prefix.as_u32;
167 args4.dst_address_length = d->ip4_prefix_len;
169 args4.add_adj = &adj;
171 ip4_add_del_route(im4, &args4);
176 pool_put(mm->domains, d);
181 static clib_error_t *
182 sixrd_add_domain_command_fn (vlib_main_t *vm,
183 unformat_input_t *input,
184 vlib_cli_command_t *cmd)
186 unformat_input_t _line_input, *line_input = &_line_input;
187 ip4_address_t ip4_prefix;
188 ip6_address_t ip6_prefix;
189 ip4_address_t ip4_src;
190 u32 ip6_prefix_len, ip4_prefix_len, sixrd_domain_index;
192 /* Optional arguments */
195 /* Get a line of input. */
196 if (!unformat_user(input, unformat_line_input, line_input))
198 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
199 if (unformat(line_input, "ip6-pfx %U/%d", unformat_ip6_address, &ip6_prefix, &ip6_prefix_len))
201 else if (unformat(line_input, "ip4-pfx %U/%d", unformat_ip4_address, &ip4_prefix, &ip4_prefix_len))
203 else if (unformat(line_input, "ip4-src %U", unformat_ip4_address, &ip4_src))
205 else if (unformat(line_input, "mtu %d", &mtu))
208 return clib_error_return(0, "unknown input `%U'",
209 format_unformat_error, input);
211 unformat_free(line_input);
214 return clib_error_return(0, "mandatory argument(s) missing");
216 sixrd_create_domain(&ip6_prefix, ip6_prefix_len, &ip4_prefix, ip4_prefix_len,
217 &ip4_src, &sixrd_domain_index, mtu);
222 static clib_error_t *
223 sixrd_del_domain_command_fn (vlib_main_t *vm,
224 unformat_input_t *input,
225 vlib_cli_command_t *cmd)
227 unformat_input_t _line_input, *line_input = &_line_input;
229 u32 sixrd_domain_index;
231 /* Get a line of input. */
232 if (! unformat_user(input, unformat_line_input, line_input))
235 while (unformat_check_input(line_input) != UNFORMAT_END_OF_INPUT) {
236 if (unformat(line_input, "index %d", &sixrd_domain_index))
239 return clib_error_return(0, "unknown input `%U'",
240 format_unformat_error, input);
242 unformat_free(line_input);
245 return clib_error_return(0, "mandatory argument(s) missing");
247 sixrd_delete_domain(sixrd_domain_index);
253 format_sixrd_domain (u8 *s, va_list *args)
255 sixrd_domain_t *d = va_arg(*args, sixrd_domain_t *);
256 sixrd_main_t *mm = &sixrd_main;
259 "[%d] ip6-pfx %U/%d ip4-pfx %U/%d ip4-src %U mtu %d",
261 format_ip6_address, &d->ip6_prefix, d->ip6_prefix_len,
262 format_ip4_address, &d->ip4_prefix, d->ip4_prefix_len,
263 format_ip4_address, &d->ip4_src, d->mtu);
268 static clib_error_t *
269 show_sixrd_domain_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
271 sixrd_main_t *mm = &sixrd_main;
274 if (pool_elts(mm->domains) == 0)
275 vlib_cli_output(vm, "No SIXRD domains are configured...");
277 pool_foreach(d, mm->domains, ({vlib_cli_output(vm, "%U", format_sixrd_domain, d);}));
283 static clib_error_t *
284 show_sixrd_stats_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
286 sixrd_main_t *mm = &sixrd_main;
288 int domains = 0, domaincount = 0;
289 if (pool_elts (mm->domains) == 0)
290 vlib_cli_output (vm, "No SIXRD domains are configured...");
292 pool_foreach(d, mm->domains, ({
293 domains += sizeof(*d);
297 vlib_cli_output(vm, "SIXRD domains structure: %d\n", sizeof (sixrd_domain_t));
298 vlib_cli_output(vm, "SIXRD domains: %d (%d bytes)\n", domaincount, domains);
304 * packet trace format function
307 format_sixrd_trace (u8 *s, va_list *args)
309 CLIB_UNUSED(vlib_main_t *vm) = va_arg (*args, vlib_main_t *);
310 CLIB_UNUSED(vlib_node_t *node) = va_arg (*args, vlib_node_t *);
311 sixrd_trace_t *t = va_arg (*args, sixrd_trace_t *);
312 u32 sixrd_domain_index = t->sixrd_domain_index;
314 s = format(s, "SIXRD domain index: %d", sixrd_domain_index);
319 VLIB_CLI_COMMAND(sixrd_add_domain_command, static) = {
320 .path = "sixrd add domain",
322 "sixrd add domain ip6-pfx <ip6-pfx> ip4-pfx <ip4-pfx> ip4-src <ip4-addr>",
323 .function = sixrd_add_domain_command_fn,
326 VLIB_CLI_COMMAND(sixrd_del_command, static) = {
327 .path = "sixrd del domain",
329 "sixrd del domain index <domain>",
330 .function = sixrd_del_domain_command_fn,
333 VLIB_CLI_COMMAND(show_sixrd_domain_command, static) = {
334 .path = "show sixrd domain",
335 .function = show_sixrd_domain_command_fn,
338 VLIB_CLI_COMMAND(show_sixrd_stats_command, static) = {
339 .path = "show sixrd stats",
340 .function = show_sixrd_stats_command_fn,
344 * This routine exists to convince the vlib plugin framework that
345 * we haven't accidentally copied a random .dll into the plugin directory.
347 * Also collects global variable pointers passed from the vpp engine
350 vlib_plugin_register (vlib_main_t * vm, vnet_plugin_handoff_t * h,
353 clib_error_t * error = 0;
354 sixrd_main_t *mm = &sixrd_main;
356 mm->vnet_main = vnet_get_main();
362 static clib_error_t * sixrd_init (vlib_main_t * vm)
364 clib_error_t * error = 0;
365 sixrd_main_t *mm = &sixrd_main;
367 vlib_node_t * ip6_lookup_node = vlib_get_node_by_name(vm, (u8 *)"ip6-lookup");
368 vlib_node_t * ip4_lookup_node = vlib_get_node_by_name(vm, (u8 *)"ip4-lookup");
369 vlib_node_t * ip6_sixrd_node = vlib_get_node_by_name(vm, (u8 *)"ip6-sixrd");
370 vlib_node_t * ip4_sixrd_node = vlib_get_node_by_name(vm, (u8 *)"ip4-sixrd");
371 ASSERT(ip6_lookup_node && ip4_lookup_node && ip6_sixrd_node && ip4_sixrd_node);
373 mm->ip6_lookup_next_index = vlib_node_add_next(vm, ip6_lookup_node->index, ip6_sixrd_node->index);
374 mm->ip4_lookup_next_index = vlib_node_add_next(vm, ip4_lookup_node->index, ip4_sixrd_node->index);
379 VLIB_INIT_FUNCTION (sixrd_init);