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Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
2 * l2tp.c : L2TPv3 tunnel support
3 *
4 * Copyright (c) 2013 Cisco 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 <vppinfra/error.h>
19#include <vppinfra/hash.h>
20#include <vnet/vnet.h>
21#include <vnet/ip/ip.h>
22#include <vnet/l2/l2_input.h>
23#include <vnet/ethernet/ethernet.h>
24#include <vnet/l2tp/l2tp.h>
25
26l2t_main_t l2t_main;
27
28/* packet trace format function */
Calvinee275a72016-08-10 11:01:41 -040029u8 *
30format_l2t_trace (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -070031{
32 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
33 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Calvinee275a72016-08-10 11:01:41 -040034 l2t_trace_t *t = va_arg (*args, l2t_trace_t *);
35
Ed Warnickecb9cada2015-12-08 15:45:58 -070036 if (t->is_user_to_network)
Calvinee275a72016-08-10 11:01:41 -040037 s = format (s, "L2T: %U (client) -> %U (our) session %d",
38 format_ip6_address, &t->client_address,
39 format_ip6_address, &t->our_address, t->session_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -070040 else
41 s = format (s, "L2T: %U (our) -> %U (client) session %d)",
Calvinee275a72016-08-10 11:01:41 -040042 format_ip6_address, &t->our_address,
43 format_ip6_address, &t->client_address, t->session_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -070044 return s;
45}
46
Calvinee275a72016-08-10 11:01:41 -040047u8 *
48format_l2t_session (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -070049{
Calvinee275a72016-08-10 11:01:41 -040050 l2t_session_t *session = va_arg (*args, l2t_session_t *);
51 l2t_main_t *lm = &l2t_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -070052 u32 counter_index;
53 vlib_counter_t v;
54
Calvinee275a72016-08-10 11:01:41 -040055 s = format (s, "[%d] %U (our) %U (client) %U (sw_if_index %d)\n",
56 session - lm->sessions,
57 format_ip6_address, &session->our_address,
58 format_ip6_address, &session->client_address,
59 format_vnet_sw_interface_name, lm->vnet_main,
60 vnet_get_sw_interface (lm->vnet_main, session->sw_if_index),
61 session->sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -070062
63 s = format (s, " local cookies %016llx %016llx remote cookie %016llx\n",
Calvinee275a72016-08-10 11:01:41 -040064 clib_net_to_host_u64 (session->local_cookie[0]),
65 clib_net_to_host_u64 (session->local_cookie[1]),
66 clib_net_to_host_u64 (session->remote_cookie));
Ed Warnickecb9cada2015-12-08 15:45:58 -070067
68 s = format (s, " local session-id %d remote session-id %d\n",
Calvinee275a72016-08-10 11:01:41 -040069 clib_net_to_host_u32 (session->local_session_id),
70 clib_net_to_host_u32 (session->remote_session_id));
Ed Warnickecb9cada2015-12-08 15:45:58 -070071
Calvinee275a72016-08-10 11:01:41 -040072 s = format (s, " l2 specific sublayer %s\n",
73 session->l2_sublayer_present ? "preset" : "absent");
Ed Warnickecb9cada2015-12-08 15:45:58 -070074
Calvinee275a72016-08-10 11:01:41 -040075 counter_index =
Ed Warnickecb9cada2015-12-08 15:45:58 -070076 session_index_to_counter_index (session - lm->sessions,
Calvinee275a72016-08-10 11:01:41 -040077 SESSION_COUNTER_USER_TO_NETWORK);
Ed Warnickecb9cada2015-12-08 15:45:58 -070078
79 vlib_get_combined_counter (&lm->counter_main, counter_index, &v);
80 if (v.packets != 0)
81 s = format (s, " user-to-net: %llu pkts %llu bytes\n",
Calvinee275a72016-08-10 11:01:41 -040082 v.packets, v.bytes);
Ed Warnickecb9cada2015-12-08 15:45:58 -070083
Calvinee275a72016-08-10 11:01:41 -040084 vlib_get_combined_counter (&lm->counter_main, counter_index + 1, &v);
Ed Warnickecb9cada2015-12-08 15:45:58 -070085
86 if (v.packets != 0)
87 s = format (s, " net-to-user: %llu pkts %llu bytes\n",
Calvinee275a72016-08-10 11:01:41 -040088 v.packets, v.bytes);
Ed Warnickecb9cada2015-12-08 15:45:58 -070089 return s;
90}
91
92static clib_error_t *
93show_l2tp_command_fn (vlib_main_t * vm,
Calvinee275a72016-08-10 11:01:41 -040094 unformat_input_t * input, vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -070095{
96 l2t_session_t *session;
97 l2t_main_t *lm = &l2t_main;
Calvinee275a72016-08-10 11:01:41 -040098 char *keystr = 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -070099 int verbose = 0;
Calvinee275a72016-08-10 11:01:41 -0400100
Ed Warnickecb9cada2015-12-08 15:45:58 -0700101 if (unformat (input, "verbose") || unformat (input, "v"))
102 verbose = 1;
103
104 if (pool_elts (lm->sessions) == 0)
Calvinee275a72016-08-10 11:01:41 -0400105 vlib_cli_output (vm, "No l2tp sessions...");
Ed Warnickecb9cada2015-12-08 15:45:58 -0700106 else
Calvinee275a72016-08-10 11:01:41 -0400107 vlib_cli_output (vm, "%u l2tp sessions...", pool_elts (lm->sessions));
Ed Warnickecb9cada2015-12-08 15:45:58 -0700108
109 if (verbose)
110 {
111 switch (lm->lookup_type)
Calvinee275a72016-08-10 11:01:41 -0400112 {
113 case L2T_LOOKUP_SRC_ADDRESS:
114 keystr = "src address";
115 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700116
Calvinee275a72016-08-10 11:01:41 -0400117 case L2T_LOOKUP_DST_ADDRESS:
118 keystr = "dst address";
119 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700120
Calvinee275a72016-08-10 11:01:41 -0400121 case L2T_LOOKUP_SESSION_ID:
122 keystr = "session id";
123 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700124
Calvinee275a72016-08-10 11:01:41 -0400125 default:
126 keystr = "BOGUS!";
127 break;
128 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700129
130 vlib_cli_output (vm, "L2tp session lookup on %s", keystr);
131
Calvinee275a72016-08-10 11:01:41 -0400132 /* *INDENT-OFF* */
Damjan Marion607de1a2016-08-16 22:53:54 +0200133 pool_foreach (session, lm->sessions,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700134 ({
135 vlib_cli_output (vm, "%U", format_l2t_session, session);
136 }));
Calvinee275a72016-08-10 11:01:41 -0400137 /* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700138 }
Calvinee275a72016-08-10 11:01:41 -0400139
Ed Warnickecb9cada2015-12-08 15:45:58 -0700140 return 0;
141}
142
Calvinee275a72016-08-10 11:01:41 -0400143/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700144VLIB_CLI_COMMAND (show_session_detail_command, static) = {
145 .path = "show l2tpv3",
146 .short_help = "show l2tpv3 [verbose]",
147 .function = show_l2tp_command_fn,
148};
Calvinee275a72016-08-10 11:01:41 -0400149/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700150
151static clib_error_t *
152test_counters_command_fn (vlib_main_t * vm,
Calvinee275a72016-08-10 11:01:41 -0400153 unformat_input_t * input, vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700154{
155 l2t_session_t *session;
156 l2t_main_t *lm = &l2t_main;
157 u32 session_index;
158 u32 counter_index;
Calvinee275a72016-08-10 11:01:41 -0400159 u32 nincr = 0;
160 u32 cpu_index = os_get_cpu_number ();
Ed Warnickecb9cada2015-12-08 15:45:58 -0700161
Calvinee275a72016-08-10 11:01:41 -0400162 /* *INDENT-OFF* */
Damjan Marion607de1a2016-08-16 22:53:54 +0200163 pool_foreach (session, lm->sessions,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700164 ({
165 session_index = session - lm->sessions;
Damjan Marion607de1a2016-08-16 22:53:54 +0200166 counter_index =
167 session_index_to_counter_index (session_index,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700168 SESSION_COUNTER_USER_TO_NETWORK);
169 vlib_increment_combined_counter (&lm->counter_main,
Damjan Marion607de1a2016-08-16 22:53:54 +0200170 cpu_index,
171 counter_index,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700172 1/*pkt*/, 1111 /*bytes*/);
173 vlib_increment_combined_counter (&lm->counter_main,
Damjan Marion607de1a2016-08-16 22:53:54 +0200174 cpu_index,
175 counter_index+1,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700176 1/*pkt*/, 2222 /*bytes*/);
177 nincr++;
Damjan Marion607de1a2016-08-16 22:53:54 +0200178
Ed Warnickecb9cada2015-12-08 15:45:58 -0700179 }));
Calvinee275a72016-08-10 11:01:41 -0400180 /* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700181 vlib_cli_output (vm, "Incremented %d active counters\n", nincr);
Calvinee275a72016-08-10 11:01:41 -0400182
Ed Warnickecb9cada2015-12-08 15:45:58 -0700183 return 0;
184}
185
Calvinee275a72016-08-10 11:01:41 -0400186/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700187VLIB_CLI_COMMAND (test_counters_command, static) = {
188 .path = "test counters",
189 .short_help = "increment all active counters",
190 .function = test_counters_command_fn,
191};
Calvinee275a72016-08-10 11:01:41 -0400192/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700193
194static clib_error_t *
195clear_counters_command_fn (vlib_main_t * vm,
Calvinee275a72016-08-10 11:01:41 -0400196 unformat_input_t * input, vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700197{
198 l2t_session_t *session;
199 l2t_main_t *lm = &l2t_main;
200 u32 session_index;
201 u32 counter_index;
Calvinee275a72016-08-10 11:01:41 -0400202 u32 nincr = 0;
203
204 /* *INDENT-OFF* */
Damjan Marion607de1a2016-08-16 22:53:54 +0200205 pool_foreach (session, lm->sessions,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700206 ({
207 session_index = session - lm->sessions;
Damjan Marion607de1a2016-08-16 22:53:54 +0200208 counter_index =
209 session_index_to_counter_index (session_index,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700210 SESSION_COUNTER_USER_TO_NETWORK);
211 vlib_zero_combined_counter (&lm->counter_main, counter_index);
212 vlib_zero_combined_counter (&lm->counter_main, counter_index+1);
213 nincr++;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700214 }));
Calvinee275a72016-08-10 11:01:41 -0400215 /* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700216 vlib_cli_output (vm, "Cleared %d active counters\n", nincr);
Calvinee275a72016-08-10 11:01:41 -0400217
Ed Warnickecb9cada2015-12-08 15:45:58 -0700218 return 0;
219}
220
Calvinee275a72016-08-10 11:01:41 -0400221/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700222VLIB_CLI_COMMAND (clear_counters_command, static) = {
Calvinee275a72016-08-10 11:01:41 -0400223 .path = "clear counters",
224 .short_help = "clear all active counters",
225 .function = clear_counters_command_fn,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700226};
Calvinee275a72016-08-10 11:01:41 -0400227/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700228
Calvinee275a72016-08-10 11:01:41 -0400229static u8 *
230format_l2tpv3_name (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700231{
232 l2t_main_t *lm = &l2t_main;
233 u32 i = va_arg (*args, u32);
234 u32 show_dev_instance = ~0;
235
236 if (i < vec_len (lm->dev_inst_by_real))
237 show_dev_instance = lm->dev_inst_by_real[i];
238
239 if (show_dev_instance != ~0)
240 i = show_dev_instance;
241
242 return format (s, "l2tpv3_tunnel%d", i);
243}
244
Calvinee275a72016-08-10 11:01:41 -0400245static int
246l2tpv3_name_renumber (vnet_hw_interface_t * hi, u32 new_dev_instance)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700247{
248 l2t_main_t *lm = &l2t_main;
249
250 vec_validate_init_empty (lm->dev_inst_by_real, hi->dev_instance, ~0);
251
Calvinee275a72016-08-10 11:01:41 -0400252 lm->dev_inst_by_real[hi->dev_instance] = new_dev_instance;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700253
254 return 0;
255}
256
Calvinee275a72016-08-10 11:01:41 -0400257static uword
258dummy_interface_tx (vlib_main_t * vm,
259 vlib_node_runtime_t * node, vlib_frame_t * frame)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700260{
261 clib_warning ("you shouldn't be here, leaking buffers...");
262 return frame->n_vectors;
263}
264
Calvinee275a72016-08-10 11:01:41 -0400265/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700266VNET_DEVICE_CLASS (l2tpv3_device_class,static) = {
267 .name = "L2TPv3",
268 .format_device_name = format_l2tpv3_name,
269 .name_renumber = l2tpv3_name_renumber,
270 .tx_function = dummy_interface_tx,
271};
Calvinee275a72016-08-10 11:01:41 -0400272/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700273
Calvinee275a72016-08-10 11:01:41 -0400274static u8 *
275format_l2tp_header_with_length (u8 * s, va_list * args)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700276{
277 u32 dev_instance = va_arg (*args, u32);
278 s = format (s, "unimplemented dev %u", dev_instance);
279 return s;
280}
281
Calvinee275a72016-08-10 11:01:41 -0400282/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700283VNET_HW_INTERFACE_CLASS (l2tpv3_hw_class) = {
284 .name = "L2TPV3",
285 .format_header = format_l2tp_header_with_length,
Neale Rannsb80c5362016-10-08 13:03:40 +0100286 .build_rewrite = default_build_rewrite,
287 .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
Ed Warnickecb9cada2015-12-08 15:45:58 -0700288};
Calvinee275a72016-08-10 11:01:41 -0400289/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700290
Calvinee275a72016-08-10 11:01:41 -0400291int
292create_l2tpv3_ipv6_tunnel (l2t_main_t * lm,
293 ip6_address_t * client_address,
294 ip6_address_t * our_address,
295 u32 local_session_id,
296 u32 remote_session_id,
297 u64 local_cookie,
298 u64 remote_cookie,
299 int l2_sublayer_present,
300 u32 encap_fib_index, u32 * sw_if_index)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700301{
302 l2t_session_t *s = 0;
Calvinee275a72016-08-10 11:01:41 -0400303 vnet_main_t *vnm = lm->vnet_main;
304 vnet_hw_interface_t *hi;
305 uword *p = (uword *) ~ 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700306 u32 hw_if_index;
307 l2tpv3_header_t l2tp_hdr;
Calvinee275a72016-08-10 11:01:41 -0400308 ip6_address_t *dst_address_copy, *src_address_copy;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700309 u32 counter_index;
310
311 remote_session_id = clib_host_to_net_u32 (remote_session_id);
Calvinee275a72016-08-10 11:01:41 -0400312 local_session_id = clib_host_to_net_u32 (local_session_id);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700313
Calvinee275a72016-08-10 11:01:41 -0400314 switch (lm->lookup_type)
315 {
316 case L2T_LOOKUP_SRC_ADDRESS:
317 p = hash_get_mem (lm->session_by_src_address, client_address);
318 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700319
Calvinee275a72016-08-10 11:01:41 -0400320 case L2T_LOOKUP_DST_ADDRESS:
321 p = hash_get_mem (lm->session_by_dst_address, our_address);
322 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700323
Calvinee275a72016-08-10 11:01:41 -0400324 case L2T_LOOKUP_SESSION_ID:
325 p = hash_get (lm->session_by_session_id, local_session_id);
326 break;
327
328 default:
329 ASSERT (0);
330 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700331
332 /* adding a session: session must not already exist */
Calvinee275a72016-08-10 11:01:41 -0400333 if (p)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700334 return VNET_API_ERROR_INVALID_VALUE;
335
336 pool_get (lm->sessions, s);
337 memset (s, 0, sizeof (*s));
Damjan Marionf1213b82016-03-13 02:22:06 +0100338 clib_memcpy (&s->our_address, our_address, sizeof (s->our_address));
Calvinee275a72016-08-10 11:01:41 -0400339 clib_memcpy (&s->client_address, client_address,
340 sizeof (s->client_address));
Ed Warnickecb9cada2015-12-08 15:45:58 -0700341 s->local_cookie[0] = clib_host_to_net_u64 (local_cookie);
342 s->remote_cookie = clib_host_to_net_u64 (remote_cookie);
343 s->local_session_id = local_session_id;
344 s->remote_session_id = remote_session_id;
345 s->l2_sublayer_present = l2_sublayer_present;
346 /* precompute l2tp header size */
Calvinee275a72016-08-10 11:01:41 -0400347 s->l2tp_hdr_size = l2_sublayer_present ?
Ed Warnickecb9cada2015-12-08 15:45:58 -0700348 sizeof (l2tpv3_header_t) :
Calvinee275a72016-08-10 11:01:41 -0400349 sizeof (l2tpv3_header_t) - sizeof (l2tp_hdr.l2_specific_sublayer);
Pierre Pfister80ee2132016-06-22 12:54:48 +0100350 s->admin_up = 0;
Pierre Pfister08e03122016-07-15 09:19:39 +0100351 s->encap_fib_index = encap_fib_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700352
353 /* Setup hash table entries */
Calvinee275a72016-08-10 11:01:41 -0400354 switch (lm->lookup_type)
355 {
356 case L2T_LOOKUP_SRC_ADDRESS:
357 src_address_copy = clib_mem_alloc (sizeof (*src_address_copy));
358 clib_memcpy (src_address_copy, client_address,
359 sizeof (*src_address_copy));
360 hash_set_mem (lm->session_by_src_address, src_address_copy,
361 s - lm->sessions);
362 break;
363 case L2T_LOOKUP_DST_ADDRESS:
364 dst_address_copy = clib_mem_alloc (sizeof (*dst_address_copy));
365 clib_memcpy (dst_address_copy, our_address, sizeof (*dst_address_copy));
366 hash_set_mem (lm->session_by_dst_address, dst_address_copy,
367 s - lm->sessions);
368 break;
369 case L2T_LOOKUP_SESSION_ID:
370 hash_set (lm->session_by_session_id, local_session_id,
371 s - lm->sessions);
372 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700373
Calvinee275a72016-08-10 11:01:41 -0400374 default:
375 ASSERT (0);
376 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700377
378 /* validate counters */
Calvinee275a72016-08-10 11:01:41 -0400379 counter_index =
Ed Warnickecb9cada2015-12-08 15:45:58 -0700380 session_index_to_counter_index (s - lm->sessions,
Calvinee275a72016-08-10 11:01:41 -0400381 SESSION_COUNTER_USER_TO_NETWORK);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700382 vlib_validate_combined_counter (&lm->counter_main, counter_index);
Calvinee275a72016-08-10 11:01:41 -0400383 vlib_validate_combined_counter (&lm->counter_main, counter_index + 1);
384
Ed Warnickecb9cada2015-12-08 15:45:58 -0700385 if (vec_len (lm->free_l2tpv3_tunnel_hw_if_indices) > 0)
386 {
387 hw_if_index = lm->free_l2tpv3_tunnel_hw_if_indices
Calvinee275a72016-08-10 11:01:41 -0400388 [vec_len (lm->free_l2tpv3_tunnel_hw_if_indices) - 1];
Ed Warnickecb9cada2015-12-08 15:45:58 -0700389 _vec_len (lm->free_l2tpv3_tunnel_hw_if_indices) -= 1;
390
391 hi = vnet_get_hw_interface (vnm, hw_if_index);
392 hi->dev_instance = s - lm->sessions;
393 hi->hw_instance = hi->dev_instance;
394 }
Calvinee275a72016-08-10 11:01:41 -0400395 else
Ed Warnickecb9cada2015-12-08 15:45:58 -0700396 {
397 hw_if_index = vnet_register_interface
Calvinee275a72016-08-10 11:01:41 -0400398 (vnm, l2tpv3_device_class.index, s - lm->sessions,
399 l2tpv3_hw_class.index, s - lm->sessions);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700400 hi = vnet_get_hw_interface (vnm, hw_if_index);
401 hi->output_node_index = l2t_encap_node.index;
402 /* $$$$ initialize custom dispositions, if needed */
403 }
Calvinee275a72016-08-10 11:01:41 -0400404
Ed Warnickecb9cada2015-12-08 15:45:58 -0700405 s->hw_if_index = hw_if_index;
406 s->sw_if_index = hi->sw_if_index;
407
408 if (sw_if_index)
409 *sw_if_index = hi->sw_if_index;
410
Ed Warnickecb9cada2015-12-08 15:45:58 -0700411 return 0;
412}
413
414static clib_error_t *
415create_l2tpv3_tunnel_command_fn (vlib_main_t * vm,
Calvinee275a72016-08-10 11:01:41 -0400416 unformat_input_t * input,
417 vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700418{
419 ip6_address_t client_address, our_address;
Calvinee275a72016-08-10 11:01:41 -0400420 unformat_input_t _line_input, *line_input = &_line_input;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700421 l2t_main_t *lm = &l2t_main;
Calvinee275a72016-08-10 11:01:41 -0400422 u64 local_cookie = (u64) ~ 0, remote_cookie = (u64) ~ 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700423 u32 local_session_id = 1, remote_session_id = 1;
424 int our_address_set = 0, client_address_set = 0;
425 int l2_sublayer_present = 0;
426 int rv;
427 u32 sw_if_index;
Pierre Pfister08e03122016-07-15 09:19:39 +0100428 u32 encap_fib_id = ~0;
429 u32 encap_fib_index = ~0;
Billy McFalla9a20e72017-02-15 11:39:12 -0500430 clib_error_t *error = NULL;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700431
432 /* Get a line of input. */
Calvinee275a72016-08-10 11:01:41 -0400433 if (!unformat_user (input, unformat_line_input, line_input))
Ed Warnickecb9cada2015-12-08 15:45:58 -0700434 return 0;
435
Calvinee275a72016-08-10 11:01:41 -0400436 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
437 {
438 if (unformat (line_input, "client %U",
439 unformat_ip6_address, &client_address))
440 client_address_set = 1;
441 else if (unformat (line_input, "our %U",
442 unformat_ip6_address, &our_address))
443 our_address_set = 1;
444 else if (unformat (line_input, "local-cookie %llx", &local_cookie))
445 ;
446 else if (unformat (line_input, "remote-cookie %llx", &remote_cookie))
447 ;
448 else if (unformat (line_input, "local-session-id %d",
449 &local_session_id))
450 ;
451 else if (unformat (line_input, "remote-session-id %d",
452 &remote_session_id))
453 ;
454 else if (unformat (line_input, "fib-id %d", &encap_fib_id))
455 ;
456 else if (unformat (line_input, "l2-sublayer-present"))
457 l2_sublayer_present = 1;
458 else
Billy McFalla9a20e72017-02-15 11:39:12 -0500459 {
460 error = clib_error_return (0, "parse error: '%U'",
461 format_unformat_error, line_input);
462 goto done;
463 }
Calvinee275a72016-08-10 11:01:41 -0400464 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700465
Calvinee275a72016-08-10 11:01:41 -0400466 if (encap_fib_id != ~0)
467 {
Pierre Pfister08e03122016-07-15 09:19:39 +0100468 uword *p;
469 ip6_main_t *im = &ip6_main;
470 if (!(p = hash_get (im->fib_index_by_table_id, encap_fib_id)))
Billy McFalla9a20e72017-02-15 11:39:12 -0500471 {
472 error = clib_error_return (0, "No fib with id %d", encap_fib_id);
473 goto done;
474 }
Pierre Pfister08e03122016-07-15 09:19:39 +0100475 encap_fib_index = p[0];
Calvinee275a72016-08-10 11:01:41 -0400476 }
477 else
478 {
Pierre Pfister08e03122016-07-15 09:19:39 +0100479 encap_fib_index = ~0;
Calvinee275a72016-08-10 11:01:41 -0400480 }
Pierre Pfister08e03122016-07-15 09:19:39 +0100481
Ed Warnickecb9cada2015-12-08 15:45:58 -0700482 if (our_address_set == 0)
Billy McFalla9a20e72017-02-15 11:39:12 -0500483 {
484 error = clib_error_return (0, "our address not specified");
485 goto done;
486 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700487 if (client_address_set == 0)
Billy McFalla9a20e72017-02-15 11:39:12 -0500488 {
489 error = clib_error_return (0, "client address not specified");
490 goto done;
491 }
Calvinee275a72016-08-10 11:01:41 -0400492
Ed Warnickecb9cada2015-12-08 15:45:58 -0700493 rv = create_l2tpv3_ipv6_tunnel (lm, &client_address, &our_address,
Calvinee275a72016-08-10 11:01:41 -0400494 local_session_id, remote_session_id,
495 local_cookie, remote_cookie,
496 l2_sublayer_present,
497 encap_fib_index, &sw_if_index);
498 switch (rv)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700499 {
500 case 0:
Calvinee275a72016-08-10 11:01:41 -0400501 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
502 vnet_get_main (), sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700503 break;
504 case VNET_API_ERROR_INVALID_VALUE:
Billy McFalla9a20e72017-02-15 11:39:12 -0500505 error = clib_error_return (0, "session already exists...");
506 goto done;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700507
508 case VNET_API_ERROR_NO_SUCH_ENTRY:
Billy McFalla9a20e72017-02-15 11:39:12 -0500509 error = clib_error_return (0, "session does not exist...");
510 goto done;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700511
512 default:
Billy McFalla9a20e72017-02-15 11:39:12 -0500513 error = clib_error_return (0, "l2tp_session_add_del returned %d", rv);
514 goto done;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700515 }
516
Billy McFalla9a20e72017-02-15 11:39:12 -0500517done:
518 unformat_free (line_input);
519
520 return error;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700521}
522
Calvinee275a72016-08-10 11:01:41 -0400523/* *INDENT-OFF* */
Damjan Marion607de1a2016-08-16 22:53:54 +0200524VLIB_CLI_COMMAND (create_l2tpv3_tunnel_command, static) =
Ed Warnickecb9cada2015-12-08 15:45:58 -0700525{
Calvinee275a72016-08-10 11:01:41 -0400526 .path = "create l2tpv3 tunnel",
Damjan Marion607de1a2016-08-16 22:53:54 +0200527 .short_help =
Calvinee275a72016-08-10 11:01:41 -0400528 "create l2tpv3 tunnel client <ip6> our <ip6> local-cookie <hex> remote-cookie <hex> local-session <dec> remote-session <dec>",
529 .function = create_l2tpv3_tunnel_command_fn,
530};
531/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700532
Calvinee275a72016-08-10 11:01:41 -0400533int
534l2tpv3_set_tunnel_cookies (l2t_main_t * lm,
535 u32 sw_if_index,
536 u64 new_local_cookie, u64 new_remote_cookie)
537{
538 l2t_session_t *s;
539 vnet_hw_interface_t *hi;
540 vnet_main_t *vnm = vnet_get_main ();
541 hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700542
Calvinee275a72016-08-10 11:01:41 -0400543 if (pool_is_free_index (lm->sessions, hi->dev_instance))
544 return VNET_API_ERROR_INVALID_VALUE;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700545
Calvinee275a72016-08-10 11:01:41 -0400546 s = pool_elt_at_index (lm->sessions, hi->dev_instance);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700547
Calvinee275a72016-08-10 11:01:41 -0400548 s->local_cookie[1] = s->local_cookie[0];
549 s->local_cookie[0] = clib_host_to_net_u64 (new_local_cookie);
550 s->remote_cookie = clib_host_to_net_u64 (new_remote_cookie);
551
552 return 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700553}
554
555
556static clib_error_t *
557set_l2tp_tunnel_cookie_command_fn (vlib_main_t * vm,
Calvinee275a72016-08-10 11:01:41 -0400558 unformat_input_t * input,
559 vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700560{
561 l2t_main_t *lm = &l2t_main;
Calvinee275a72016-08-10 11:01:41 -0400562 vnet_main_t *vnm = vnet_get_main ();
Ed Warnickecb9cada2015-12-08 15:45:58 -0700563 u32 sw_if_index = ~0;
Calvinee275a72016-08-10 11:01:41 -0400564 u64 local_cookie = (u64) ~ 0, remote_cookie = (u64) ~ 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700565
566 int rv;
Calvinee275a72016-08-10 11:01:41 -0400567
Ed Warnickecb9cada2015-12-08 15:45:58 -0700568 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
569 {
Calvinee275a72016-08-10 11:01:41 -0400570 if (unformat (input, "%U", unformat_vnet_sw_interface, vnm,
571 &sw_if_index))
572 ;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700573 else if (unformat (input, "local %llx", &local_cookie))
Calvinee275a72016-08-10 11:01:41 -0400574 ;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700575 else if (unformat (input, "remote %llx", &remote_cookie))
Calvinee275a72016-08-10 11:01:41 -0400576 ;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700577 else
Calvinee275a72016-08-10 11:01:41 -0400578 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700579 }
580 if (sw_if_index == ~0)
581 return clib_error_return (0, "unknown interface");
582 if (local_cookie == ~0)
583 return clib_error_return (0, "local cookie required");
584 if (remote_cookie == ~0)
585 return clib_error_return (0, "remote cookie required");
586
Calvinee275a72016-08-10 11:01:41 -0400587 rv = l2tpv3_set_tunnel_cookies (lm, sw_if_index,
588 local_cookie, remote_cookie);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700589
590 switch (rv)
591 {
592 case 0:
593 break;
594
595 case VNET_API_ERROR_INVALID_SW_IF_INDEX:
596 return clib_error_return (0, "invalid interface");
597
598 default:
599 return clib_error_return (0, "l2tp_session_set_cookies returned %d",
Calvinee275a72016-08-10 11:01:41 -0400600 rv);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700601 }
602
Calvinee275a72016-08-10 11:01:41 -0400603 return 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700604}
605
Calvinee275a72016-08-10 11:01:41 -0400606/* *INDENT-OFF* */
Damjan Marion607de1a2016-08-16 22:53:54 +0200607VLIB_CLI_COMMAND (set_l2tp_tunnel_cookie_command, static) =
Ed Warnickecb9cada2015-12-08 15:45:58 -0700608{
Calvinee275a72016-08-10 11:01:41 -0400609 .path = "set l2tpv3 tunnel cookie",
Damjan Marion607de1a2016-08-16 22:53:54 +0200610 .short_help =
Calvinee275a72016-08-10 11:01:41 -0400611 "set l2tpv3 tunnel cookie <intfc> local <hex> remote <hex>",
612 .function = set_l2tp_tunnel_cookie_command_fn,
613};
614/* *INDENT-ON* */
615
616int
617l2tpv3_interface_enable_disable (vnet_main_t * vnm,
618 u32 sw_if_index, int enable_disable)
619{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700620
621 if (pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
622 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
623
Damjan Marion8b3191e2016-11-09 19:54:20 +0100624 vnet_feature_enable_disable ("ip6-unicast", "l2tp-decap", sw_if_index,
625 enable_disable, 0, 0);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700626 return 0;
627}
628
629/* Enable/disable L2TPv3 intercept on IP6 fowarding path */
630static clib_error_t *
631set_ip6_l2tpv3 (vlib_main_t * vm,
Calvinee275a72016-08-10 11:01:41 -0400632 unformat_input_t * input, vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700633{
634 u32 sw_if_index = ~0;
635 int is_add = 1;
636 int rv;
Calvinee275a72016-08-10 11:01:41 -0400637 vnet_main_t *vnm = vnet_get_main ();
Ed Warnickecb9cada2015-12-08 15:45:58 -0700638
639 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
640 {
Calvinee275a72016-08-10 11:01:41 -0400641 if (unformat (input, "%U", unformat_vnet_sw_interface, vnm,
642 &sw_if_index))
643 ;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700644 else if (unformat (input, "del"))
Calvinee275a72016-08-10 11:01:41 -0400645 is_add = 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700646 else
Calvinee275a72016-08-10 11:01:41 -0400647 break;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700648 }
649
650 if (sw_if_index == ~0)
651 return clib_error_return (0, "interface required");
Calvinee275a72016-08-10 11:01:41 -0400652
Ed Warnickecb9cada2015-12-08 15:45:58 -0700653 rv = l2tpv3_interface_enable_disable (vnm, sw_if_index, is_add);
654
655 switch (rv)
656 {
657 case 0:
658 break;
659
660 case VNET_API_ERROR_INVALID_SW_IF_INDEX:
661 return clib_error_return (0, "invalid interface");
662
663 default:
Calvinee275a72016-08-10 11:01:41 -0400664 return clib_error_return (0,
665 "l2tp_interface_enable_disable returned %d",
666 rv);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700667 }
668 return 0;
669}
670
Calvinee275a72016-08-10 11:01:41 -0400671/* *INDENT-OFF* */
Damjan Marion607de1a2016-08-16 22:53:54 +0200672VLIB_CLI_COMMAND (set_interface_ip6_l2tpv3, static) =
Calvinee275a72016-08-10 11:01:41 -0400673{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700674 .path = "set interface ip6 l2tpv3",
675 .function = set_ip6_l2tpv3,
676 .short_help = "set interface ip6 l2tpv3 <intfc> [del]",
677};
Calvinee275a72016-08-10 11:01:41 -0400678/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700679
680static clib_error_t *
681l2tp_config (vlib_main_t * vm, unformat_input_t * input)
682{
Calvinee275a72016-08-10 11:01:41 -0400683 l2t_main_t *lm = &l2t_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700684
Calvinee275a72016-08-10 11:01:41 -0400685 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
686 {
687 if (unformat (input, "lookup-v6-src"))
688 lm->lookup_type = L2T_LOOKUP_SRC_ADDRESS;
689 else if (unformat (input, "lookup-v6-dst"))
690 lm->lookup_type = L2T_LOOKUP_DST_ADDRESS;
691 else if (unformat (input, "lookup-session-id"))
692 lm->lookup_type = L2T_LOOKUP_SESSION_ID;
693 else
694 return clib_error_return (0, "unknown input `%U'",
695 format_unformat_error, input);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700696 }
Calvinee275a72016-08-10 11:01:41 -0400697 return 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700698}
699
700VLIB_CONFIG_FUNCTION (l2tp_config, "l2tp");
701
Pierre Pfister80ee2132016-06-22 12:54:48 +0100702
703clib_error_t *
Calvinee275a72016-08-10 11:01:41 -0400704l2tp_sw_interface_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
Pierre Pfister80ee2132016-06-22 12:54:48 +0100705{
706 l2t_main_t *lm = &l2t_main;
707 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
708 if (hi->hw_class_index != l2tpv3_hw_class.index)
709 return 0;
710
711 u32 session_index = hi->dev_instance;
712 l2t_session_t *s = pool_elt_at_index (lm->sessions, session_index);
Calvinee275a72016-08-10 11:01:41 -0400713 s->admin_up = ! !(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP);
Pierre Pfister80ee2132016-06-22 12:54:48 +0100714 return 0;
715}
716
717VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (l2tp_sw_interface_up_down);
718
Calvinee275a72016-08-10 11:01:41 -0400719clib_error_t *
720l2tp_init (vlib_main_t * vm)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700721{
Calvinee275a72016-08-10 11:01:41 -0400722 l2t_main_t *lm = &l2t_main;
723 ip_main_t *im = &ip_main;
724 ip_protocol_info_t *pi;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700725
Calvinee275a72016-08-10 11:01:41 -0400726 lm->vnet_main = vnet_get_main ();
727 lm->vlib_main = vm;
728 lm->lookup_type = L2T_LOOKUP_DST_ADDRESS;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700729
Calvinee275a72016-08-10 11:01:41 -0400730 lm->session_by_src_address = hash_create_mem
731 (0, sizeof (ip6_address_t) /* key bytes */ ,
732 sizeof (u32) /* value bytes */ );
733 lm->session_by_dst_address = hash_create_mem
734 (0, sizeof (ip6_address_t) /* key bytes */ ,
735 sizeof (u32) /* value bytes */ );
736 lm->session_by_session_id = hash_create (0, sizeof (uword));
Ed Warnickecb9cada2015-12-08 15:45:58 -0700737
Calvinee275a72016-08-10 11:01:41 -0400738 pi = ip_get_protocol_info (im, IP_PROTOCOL_L2TP);
739 pi->unformat_pg_edit = unformat_pg_l2tp_header;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700740
Calvinee275a72016-08-10 11:01:41 -0400741 /* insure these nodes are included in build */
742 l2tp_encap_init (vm);
743 l2tp_decap_init ();
Ed Warnickecb9cada2015-12-08 15:45:58 -0700744
Calvinee275a72016-08-10 11:01:41 -0400745 return 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700746}
747
Calvinee275a72016-08-10 11:01:41 -0400748VLIB_INIT_FUNCTION (l2tp_init);
749
Damjan Marione9f929b2017-03-16 11:32:09 +0100750clib_error_t *
751l2tp_worker_init (vlib_main_t * vm)
752{
753 l2tp_encap_init (vm);
754
755 return 0;
756}
757
758VLIB_WORKER_INIT_FUNCTION (l2tp_worker_init);
759
Calvinee275a72016-08-10 11:01:41 -0400760/*
761 * fd.io coding-style-patch-verification: ON
762 *
763 * Local Variables:
764 * eval: (c-set-style "gnu")
765 * End:
766 */