blob: d254b9bb55a3acf6c4cdd2f1464e53918783177b [file] [log] [blame]
Dave Barach68b0fb02017-02-28 15:15:56 -05001/*
2 * Copyright (c) 2016 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:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
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.
14 */
15#include <vnet/session/application_interface.h>
16
17#include <vnet/session/session.h>
18#include <vlibmemory/api.h>
19#include <vnet/dpo/load_balance.h>
Dave Barach68b0fb02017-02-28 15:15:56 -050020
21/** @file
22 VPP's application/session API bind/unbind/connect/disconnect calls
23*/
24
Florin Coras371ca502018-02-21 12:07:41 -080025/*
26 * TLS server cert and keys to be used for testing only
27 */
28const char test_srv_crt_rsa[] =
29 "-----BEGIN CERTIFICATE-----\r\n"
Florin Coras8f89dd02018-03-05 16:53:07 -080030 "MIID5zCCAs+gAwIBAgIJALeMYCEHrTtJMA0GCSqGSIb3DQEBCwUAMIGJMQswCQYD\r\n"
31 "VQQGEwJVUzELMAkGA1UECAwCQ0ExETAPBgNVBAcMCFNhbiBKb3NlMQ4wDAYDVQQK\r\n"
32 "DAVDaXNjbzEOMAwGA1UECwwFZmQuaW8xFjAUBgNVBAMMDXRlc3R0bHMuZmQuaW8x\r\n"
33 "IjAgBgkqhkiG9w0BCQEWE3ZwcC1kZXZAbGlzdHMuZmQuaW8wHhcNMTgwMzA1MjEx\r\n"
34 "NTEyWhcNMjgwMzAyMjExNTEyWjCBiTELMAkGA1UEBhMCVVMxCzAJBgNVBAgMAkNB\r\n"
35 "MREwDwYDVQQHDAhTYW4gSm9zZTEOMAwGA1UECgwFQ2lzY28xDjAMBgNVBAsMBWZk\r\n"
36 "LmlvMRYwFAYDVQQDDA10ZXN0dGxzLmZkLmlvMSIwIAYJKoZIhvcNAQkBFhN2cHAt\r\n"
37 "ZGV2QGxpc3RzLmZkLmlvMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA\r\n"
38 "4C1k8a1DuStgggqT4o09fP9sJ2dC54bxhS/Xk2VEfaIZ222WSo4X/syRVfVy9Yah\r\n"
39 "cpI1zJ/RDxaZSFhgA+nPZBrFMsrULkrdAOpOVj8eDEp9JuWdO2ODSoFnCvLxcYWB\r\n"
40 "Yc5kHryJpEaGJl1sFQSesnzMFty/59ta0stk0Fp8r5NhIjWvSovGzPo6Bhz+VS2c\r\n"
41 "ebIZh4x1t2hHaFcgm0qJoJ6DceReWCW8w+yOVovTolGGq+bpb2Hn7MnRSZ2K2NdL\r\n"
42 "+aLXpkZbS/AODP1FF2vTO1mYL290LO7/51vJmPXNKSDYMy5EvILr5/VqtjsFCwRL\r\n"
43 "Q4jcM/+GeHSAFWx4qIv0BwIDAQABo1AwTjAdBgNVHQ4EFgQUWa1SOB37xmT53tZQ\r\n"
44 "aXuLLhRI7U8wHwYDVR0jBBgwFoAUWa1SOB37xmT53tZQaXuLLhRI7U8wDAYDVR0T\r\n"
45 "BAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAoUht13W4ya27NVzQuCMvqPWL3VM4\r\n"
46 "3xbPFk02FaGz/WupPu276zGlzJAZrbuDcQowwwU1Ni1Yygxl96s1c2M5rHDTrOKG\r\n"
47 "rK0hbkSFBo+i6I8u4HiiQ4rYmG0Hv6+sXn3of0HsbtDPGgWZoipPWDljPYEURu3e\r\n"
48 "3HRe/Dtsj9CakBoSDzs8ndWaBR+f4sM9Tk1cjD46Gq2T/qpSPXqKxEUXlzhdCAn4\r\n"
49 "twub17Bq2kykHpppCwPg5M+v30tHG/R2Go15MeFWbEJthFk3TZMjKL7UFs7fH+x2\r\n"
50 "wSonXb++jY+KmCb93C+soABBizE57g/KmiR2IxQ/LMjDik01RSUIaM0lLA==\r\n"
51 "-----END CERTIFICATE-----\r\n";
Florin Coras371ca502018-02-21 12:07:41 -080052const u32 test_srv_crt_rsa_len = sizeof (test_srv_crt_rsa);
53
54const char test_srv_key_rsa[] =
Florin Coras8f89dd02018-03-05 16:53:07 -080055 "-----BEGIN PRIVATE KEY-----\r\n"
56 "MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDgLWTxrUO5K2CC\r\n"
57 "CpPijT18/2wnZ0LnhvGFL9eTZUR9ohnbbZZKjhf+zJFV9XL1hqFykjXMn9EPFplI\r\n"
58 "WGAD6c9kGsUyytQuSt0A6k5WPx4MSn0m5Z07Y4NKgWcK8vFxhYFhzmQevImkRoYm\r\n"
59 "XWwVBJ6yfMwW3L/n21rSy2TQWnyvk2EiNa9Ki8bM+joGHP5VLZx5shmHjHW3aEdo\r\n"
60 "VyCbSomgnoNx5F5YJbzD7I5Wi9OiUYar5ulvYefsydFJnYrY10v5otemRltL8A4M\r\n"
61 "/UUXa9M7WZgvb3Qs7v/nW8mY9c0pINgzLkS8guvn9Wq2OwULBEtDiNwz/4Z4dIAV\r\n"
62 "bHioi/QHAgMBAAECggEBAMzGipP8+oT166U+NlJXRFifFVN1DvdhG9PWnOxGL+c3\r\n"
63 "ILmBBC08WQzmHshPemBvR6DZkA1H23cV5JTiLWrFtC00CvhXsLRMrE5+uWotI6yE\r\n"
64 "iofybMroHvD6/X5R510UX9hQ6MHu5ShLR5VZ9zXHz5MpTmB/60jG5dLx+jgcwBK8\r\n"
65 "LuGv2YB/WCUwT9QJ3YU2eaingnXtz/MrFbkbltrqlnBdlD+kTtw6Yac9y1XuuQXc\r\n"
66 "BPeulLNDuPolJVWbUvDBZrpt2dXTgz8ws1sv+wCNE0xwQJsqW4Nx3QkpibUL9RUr\r\n"
67 "CVbKlNfa9lopT6nGKlgX69R/uH35yh9AOsfasro6w0ECgYEA82UJ8u/+ORah+0sF\r\n"
68 "Q0FfW5MTdi7OAUHOz16pUsGlaEv0ERrjZxmAkHA/VRwpvDBpx4alCv0Hc39PFLIk\r\n"
69 "nhSsM2BEuBkTAs6/GaoNAiBtQVE/hN7awNRWVmlieS0go3Y3dzaE9IUMyj8sPOFT\r\n"
70 "5JdJ6BM69PHKCkY3dKdnnfpFEuECgYEA68mRpteunF1mdZgXs+WrN+uLlRrQR20F\r\n"
71 "ZyMYiUCH2Dtn26EzA2moy7FipIIrQcX/j+KhYNGM3e7MU4LymIO29E18mn8JODnH\r\n"
72 "sQOXzBTsf8A4yIVMkcuQD3bfb0JiUGYUPOidTp2N7IJA7+6Yc3vQOyb74lnKnJoO\r\n"
73 "gougPT2wS+cCgYAn7muzb6xFsXDhyW0Tm6YJYBfRS9yAWEuVufINobeBZPSl2cN1\r\n"
74 "Jrnw+HlrfTNbrJWuJmjtZJXUXQ6cVp2rUbjutNyRV4vG6iRwEXYQ40EJdkr1gZpi\r\n"
75 "CHQhuShuuPih2MNAy7EEbM+sXrDjTBR3bFqzuHPzu7dp+BshCFX3lRfAAQKBgGQt\r\n"
76 "K5i7IhCFDjb/+3IPLgOAK7mZvsvZ4eXD33TQ2eZgtut1PXtBtNl17/b85uv293Fm\r\n"
77 "VDISVcsk3eLNS8zIiT6afUoWlxAwXEs0v5WRfjl4radkGvgGiJpJYvyeM67877RB\r\n"
78 "EDSKc/X8ESLfOB44iGvZUEMG6zJFscx9DgN25iQZAoGAbyd+JEWwdVH9/K3IH1t2\r\n"
79 "PBkZX17kNWv+iVM1WyFjbe++vfKZCrOJiyiqhDeEqgrP3AuNMlaaduC3VRC3G5oV\r\n"
80 "Mj1tlhDWQ/qhvKdCKNdIVQYDE75nw+FRWV8yYkHAnXYW3tNoweDIwixE0hkPR1bc\r\n"
81 "oEjPLVNtx8SOj/M4rhaPT3I=\r\n" "-----END PRIVATE KEY-----\r\n";
Florin Coras371ca502018-02-21 12:07:41 -080082const u32 test_srv_key_rsa_len = sizeof (test_srv_key_rsa);
83
Florin Coras4829bab2018-09-14 13:17:41 -070084#define app_interface_check_thread_and_barrier(_fn, _arg) \
Florin Coras568ebc72018-09-18 16:12:50 -070085 if (PREDICT_FALSE (!vlib_thread_is_main_w_barrier ())) \
Florin Coras4829bab2018-09-14 13:17:41 -070086 { \
87 vlib_rpc_call_main_thread (_fn, (u8 *) _arg, sizeof(*_arg)); \
88 return 0; \
89 }
90
Dave Barach68b0fb02017-02-28 15:15:56 -050091static u8
Florin Corascea194d2017-10-02 00:18:51 -070092session_endpoint_is_local (session_endpoint_t * sep)
Dave Barach68b0fb02017-02-28 15:15:56 -050093{
Florin Corascea194d2017-10-02 00:18:51 -070094 return (ip_is_zero (&sep->ip, sep->is_ip4)
95 || ip_is_local_host (&sep->ip, sep->is_ip4));
Dave Barach68b0fb02017-02-28 15:15:56 -050096}
97
98static u8
Florin Corascea194d2017-10-02 00:18:51 -070099session_endpoint_is_zero (session_endpoint_t * sep)
Dave Barach68b0fb02017-02-28 15:15:56 -0500100{
Florin Corascea194d2017-10-02 00:18:51 -0700101 return ip_is_zero (&sep->ip, sep->is_ip4);
102}
Dave Barach68b0fb02017-02-28 15:15:56 -0500103
Florin Corascea194d2017-10-02 00:18:51 -0700104u8
105session_endpoint_in_ns (session_endpoint_t * sep)
106{
Florin Corase1b819e2018-03-15 07:45:27 -0700107 u8 is_lep = session_endpoint_is_local (sep);
108 if (!is_lep && sep->sw_if_index != ENDPOINT_INVALID_INDEX
Florin Corascea194d2017-10-02 00:18:51 -0700109 && !ip_interface_has_address (sep->sw_if_index, &sep->ip, sep->is_ip4))
Dave Barach68b0fb02017-02-28 15:15:56 -0500110 {
Florin Corascea194d2017-10-02 00:18:51 -0700111 clib_warning ("sw_if_index %u not configured with ip %U",
112 sep->sw_if_index, format_ip46_address, &sep->ip,
113 sep->is_ip4);
114 return 0;
Dave Barach68b0fb02017-02-28 15:15:56 -0500115 }
Florin Corase1b819e2018-03-15 07:45:27 -0700116 return (is_lep || ip_is_local (sep->fib_index, &sep->ip, sep->is_ip4));
Dave Barach68b0fb02017-02-28 15:15:56 -0500117}
118
119int
120api_parse_session_handle (u64 handle, u32 * session_index, u32 * thread_index)
121{
122 session_manager_main_t *smm = vnet_get_session_manager_main ();
123 stream_session_t *pool;
124
125 *thread_index = handle & 0xFFFFFFFF;
126 *session_index = handle >> 32;
127
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700128 if (*thread_index >= vec_len (smm->wrk))
Dave Barach68b0fb02017-02-28 15:15:56 -0500129 return VNET_API_ERROR_INVALID_VALUE;
130
Florin Coras5a7ca7b2018-10-30 12:01:48 -0700131 pool = smm->wrk[*thread_index].sessions;
Dave Barach68b0fb02017-02-28 15:15:56 -0500132
133 if (pool_is_free_index (pool, *session_index))
134 return VNET_API_ERROR_INVALID_VALUE_2;
135
136 return 0;
137}
138
Florin Corascea194d2017-10-02 00:18:51 -0700139static void
Florin Coras5665ced2018-10-25 18:03:45 -0700140session_endpoint_update_for_app (session_endpoint_cfg_t * sep,
141 application_t * app, u8 is_connect)
Florin Corascea194d2017-10-02 00:18:51 -0700142{
143 app_namespace_t *app_ns;
Florin Coras5665ced2018-10-25 18:03:45 -0700144 u32 ns_index, fib_index;
Florin Corasda3eec12018-09-07 13:29:17 -0700145
146 ns_index = app->ns_index;
147
148 /* App is a transport proto, so fetch the calling app's ns */
149 if (app->flags & APP_OPTIONS_FLAGS_IS_TRANSPORT_APP)
150 {
151 app_worker_t *owner_wrk;
152 application_t *owner_app;
153
154 owner_wrk = app_worker_get (sep->app_wrk_index);
155 owner_app = application_get (owner_wrk->app_index);
156 ns_index = owner_app->ns_index;
157 }
158 app_ns = app_namespace_get (ns_index);
Florin Coras5665ced2018-10-25 18:03:45 -0700159 if (!app_ns)
160 return;
161
162 /* Ask transport and network to bind to/connect using local interface
163 * that "supports" app's namespace. This will fix our local connection
164 * endpoint.
165 */
John Lo4744ddb2018-11-26 22:13:57 -0500166
167 /* If in default namespace and user requested a fib index use it */
168 if (ns_index == 0 && sep->fib_index != ENDPOINT_INVALID_INDEX)
169 fib_index = sep->fib_index;
170 else
171 fib_index = sep->is_ip4 ? app_ns->ip4_fib_index : app_ns->ip6_fib_index;
Florin Coras5665ced2018-10-25 18:03:45 -0700172 sep->peer.fib_index = fib_index;
173 sep->fib_index = fib_index;
174
175 if (!is_connect)
Florin Corascea194d2017-10-02 00:18:51 -0700176 {
Florin Corascea194d2017-10-02 00:18:51 -0700177 sep->sw_if_index = app_ns->sw_if_index;
Florin Coras5665ced2018-10-25 18:03:45 -0700178 }
179 else
180 {
181 if (app_ns->sw_if_index != APP_NAMESPACE_INVALID_INDEX
182 && sep->peer.sw_if_index != ENDPOINT_INVALID_INDEX
183 && sep->peer.sw_if_index != app_ns->sw_if_index)
184 clib_warning ("Local sw_if_index different from app ns sw_if_index");
185
186 sep->peer.sw_if_index = app_ns->sw_if_index;
Florin Corascea194d2017-10-02 00:18:51 -0700187 }
188}
189
Florin Corasab2f6db2018-08-31 14:31:41 -0700190static inline int
191vnet_bind_inline (vnet_bind_args_t * a)
Dave Barach68b0fb02017-02-28 15:15:56 -0500192{
Florin Corasab2f6db2018-08-31 14:31:41 -0700193 u64 ll_handle = SESSION_INVALID_HANDLE;
Florin Coras15531972018-08-12 23:50:53 -0700194 app_worker_t *app_wrk;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700195 application_t *app;
Florin Coras5fda7a32018-02-14 08:04:31 -0800196 int rv;
Dave Barach68b0fb02017-02-28 15:15:56 -0500197
Florin Coras15531972018-08-12 23:50:53 -0700198 app = application_get_if_valid (a->app_index);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700199 if (!app)
200 {
Florin Corascea194d2017-10-02 00:18:51 -0700201 SESSION_DBG ("app not attached");
Florin Coras6cf30ad2017-04-04 23:08:23 -0700202 return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
203 }
Florin Coras15531972018-08-12 23:50:53 -0700204 app_wrk = application_get_worker (app, a->wrk_map_index);
Florin Corasab2f6db2018-08-31 14:31:41 -0700205 a->sep_ext.app_wrk_index = app_wrk->wrk_index;
Dave Barach68b0fb02017-02-28 15:15:56 -0500206
Florin Coras5665ced2018-10-25 18:03:45 -0700207 session_endpoint_update_for_app (&a->sep_ext, app, 0 /* is_connect */ );
Florin Coras15531972018-08-12 23:50:53 -0700208 if (!session_endpoint_in_ns (&a->sep))
Dave Barach68b0fb02017-02-28 15:15:56 -0500209 return VNET_API_ERROR_INVALID_VALUE_2;
210
Florin Corascea194d2017-10-02 00:18:51 -0700211 /*
212 * Add session endpoint to local session table. Only binds to "inaddr_any"
213 * (i.e., zero address) are added to local scope table.
214 */
Florin Coras15531972018-08-12 23:50:53 -0700215 if (application_has_local_scope (app)
216 && session_endpoint_is_local (&a->sep))
Florin Corascea194d2017-10-02 00:18:51 -0700217 {
Florin Corasab2f6db2018-08-31 14:31:41 -0700218 if ((rv = application_start_local_listen (app, &a->sep_ext,
219 &a->handle)))
Florin Corasf8f516a2018-02-08 15:10:09 -0800220 return rv;
Florin Coras15531972018-08-12 23:50:53 -0700221 ll_handle = a->handle;
Florin Corascea194d2017-10-02 00:18:51 -0700222 }
223
224 if (!application_has_global_scope (app))
Florin Coras5fda7a32018-02-14 08:04:31 -0800225 return (ll_handle == SESSION_INVALID_HANDLE ? -1 : 0);
Florin Corascea194d2017-10-02 00:18:51 -0700226
227 /*
228 * Add session endpoint to global session table
229 */
230
Florin Coras6cf30ad2017-04-04 23:08:23 -0700231 /* Setup listen path down to transport */
Florin Corasab2f6db2018-08-31 14:31:41 -0700232 rv = application_start_listen (app, &a->sep_ext, &a->handle);
Florin Coras5fda7a32018-02-14 08:04:31 -0800233 if (rv && ll_handle != SESSION_INVALID_HANDLE)
Florin Corasab2f6db2018-08-31 14:31:41 -0700234 {
235 application_stop_local_listen (a->app_index, a->wrk_map_index,
236 ll_handle);
237 return rv;
238 }
Florin Coras5fda7a32018-02-14 08:04:31 -0800239
240 /*
241 * Store in local table listener the index of the transport layer
Florin Corasab2f6db2018-08-31 14:31:41 -0700242 * listener. We'll need if if local listeners are hit and we need to
Florin Coras5fda7a32018-02-14 08:04:31 -0800243 * return global handle
244 */
245 if (ll_handle != SESSION_INVALID_HANDLE)
246 {
247 local_session_t *ll;
248 stream_session_t *tl;
249 ll = application_get_local_listener_w_handle (ll_handle);
Florin Coras15531972018-08-12 23:50:53 -0700250 tl = listen_session_get_from_handle (a->handle);
Florin Corasab2f6db2018-08-31 14:31:41 -0700251 if (ll->transport_listener_index == ~0)
252 ll->transport_listener_index = tl->session_index;
Florin Coras5fda7a32018-02-14 08:04:31 -0800253 }
Florin Corascea194d2017-10-02 00:18:51 -0700254 return rv;
Dave Barach68b0fb02017-02-28 15:15:56 -0500255}
256
Florin Corasab2f6db2018-08-31 14:31:41 -0700257static inline int
258vnet_unbind_inline (vnet_unbind_args_t * a)
Florin Coras6cf30ad2017-04-04 23:08:23 -0700259{
Florin Corasf8f516a2018-02-08 15:10:09 -0800260 application_t *app;
261 int rv;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700262
Florin Corasab2f6db2018-08-31 14:31:41 -0700263 if (!(app = application_get_if_valid (a->app_index)))
Florin Coras6cf30ad2017-04-04 23:08:23 -0700264 {
Florin Coras15531972018-08-12 23:50:53 -0700265 SESSION_DBG ("app (%d) not attached", wrk_map_index);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700266 return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
267 }
268
Florin Corascea194d2017-10-02 00:18:51 -0700269 if (application_has_local_scope (app))
270 {
Florin Corasab2f6db2018-08-31 14:31:41 -0700271 if ((rv = application_stop_local_listen (a->app_index,
272 a->wrk_map_index, a->handle)))
Florin Corasf8f516a2018-02-08 15:10:09 -0800273 return rv;
Florin Corascea194d2017-10-02 00:18:51 -0700274 }
275
276 /*
277 * Clear the global scope table of the listener
278 */
279 if (application_has_global_scope (app))
Florin Corasab2f6db2018-08-31 14:31:41 -0700280 return application_stop_listen (a->app_index, a->wrk_map_index,
281 a->handle);
Florin Corascea194d2017-10-02 00:18:51 -0700282 return 0;
283}
284
Florin Coras15531972018-08-12 23:50:53 -0700285static int
286application_connect (vnet_connect_args_t * a)
Dave Barach68b0fb02017-02-28 15:15:56 -0500287{
Florin Coras15531972018-08-12 23:50:53 -0700288 app_worker_t *server_wrk, *client_wrk;
Florin Corasf8f516a2018-02-08 15:10:09 -0800289 u32 table_index, server_index, li;
Florin Coras3cbc04b2017-10-02 00:18:51 -0700290 stream_session_t *listener;
Florin Corasab2f6db2018-08-31 14:31:41 -0700291 application_t *client, *server;
Florin Corasf8f516a2018-02-08 15:10:09 -0800292 local_session_t *ll;
Florin Coras15531972018-08-12 23:50:53 -0700293 u8 fib_proto;
Florin Corasf8f516a2018-02-08 15:10:09 -0800294 u64 lh;
Florin Corascea194d2017-10-02 00:18:51 -0700295
Florin Coras15531972018-08-12 23:50:53 -0700296 if (session_endpoint_is_zero (&a->sep))
Florin Corascea194d2017-10-02 00:18:51 -0700297 return VNET_API_ERROR_INVALID_VALUE;
298
Florin Coras15531972018-08-12 23:50:53 -0700299 client = application_get (a->app_index);
Florin Coras5665ced2018-10-25 18:03:45 -0700300 session_endpoint_update_for_app (&a->sep_ext, client, 1 /* is_connect */ );
Florin Coras15531972018-08-12 23:50:53 -0700301 client_wrk = application_get_worker (client, a->wrk_map_index);
Dave Barach68b0fb02017-02-28 15:15:56 -0500302
303 /*
Florin Corasf8f516a2018-02-08 15:10:09 -0800304 * First check the local scope for locally attached destinations.
Florin Corascea194d2017-10-02 00:18:51 -0700305 * If we have local scope, we pass *all* connects through it since we may
306 * have special policy rules even for non-local destinations, think proxy.
Dave Barach68b0fb02017-02-28 15:15:56 -0500307 */
Florin Corasf8f516a2018-02-08 15:10:09 -0800308 if (application_has_local_scope (client))
Dave Barach68b0fb02017-02-28 15:15:56 -0500309 {
Florin Corasf8f516a2018-02-08 15:10:09 -0800310 table_index = application_local_session_table (client);
Florin Coras15531972018-08-12 23:50:53 -0700311 lh = session_lookup_local_endpoint (table_index, &a->sep);
Florin Corasf8f516a2018-02-08 15:10:09 -0800312 if (lh == SESSION_DROP_HANDLE)
Florin Corasa2ff7b82017-11-08 17:55:03 -0800313 return VNET_API_ERROR_APP_CONNECT_FILTERED;
Florin Coras7999e832017-10-31 01:51:04 -0700314
Florin Coras5fda7a32018-02-14 08:04:31 -0800315 if (lh == SESSION_INVALID_HANDLE)
316 goto global_scope;
317
Florin Corasf8f516a2018-02-08 15:10:09 -0800318 local_session_parse_handle (lh, &server_index, &li);
319
Dave Barach68b0fb02017-02-28 15:15:56 -0500320 /*
Florin Coras7999e832017-10-31 01:51:04 -0700321 * Break loop if rule in local table points to connecting app. This
322 * can happen if client is a generic proxy. Route connect through
323 * global table instead.
Dave Barach68b0fb02017-02-28 15:15:56 -0500324 */
Florin Coras15531972018-08-12 23:50:53 -0700325 if (server_index != a->app_index)
Florin Coras7999e832017-10-31 01:51:04 -0700326 {
Florin Corasab2f6db2018-08-31 14:31:41 -0700327 server = application_get (server_index);
328 ll = application_get_local_listen_session (server, li);
329 listener = (stream_session_t *) ll;
330 server_wrk = application_listener_select_worker (listener,
331 1 /* is_local */ );
Florin Coras15531972018-08-12 23:50:53 -0700332 return application_local_session_connect (client_wrk,
333 server_wrk, ll,
334 a->api_context);
Florin Coras7999e832017-10-31 01:51:04 -0700335 }
Dave Barach68b0fb02017-02-28 15:15:56 -0500336 }
337
Dave Barach68b0fb02017-02-28 15:15:56 -0500338 /*
Florin Corascea194d2017-10-02 00:18:51 -0700339 * If nothing found, check the global scope for locally attached
340 * destinations. Make sure first that we're allowed to.
Dave Barach68b0fb02017-02-28 15:15:56 -0500341 */
Florin Coras5fda7a32018-02-14 08:04:31 -0800342
343global_scope:
Florin Coras15531972018-08-12 23:50:53 -0700344 if (session_endpoint_is_local (&a->sep))
Florin Corascea194d2017-10-02 00:18:51 -0700345 return VNET_API_ERROR_SESSION_CONNECT;
346
Florin Corasf8f516a2018-02-08 15:10:09 -0800347 if (!application_has_global_scope (client))
Florin Corascea194d2017-10-02 00:18:51 -0700348 return VNET_API_ERROR_APP_CONNECT_SCOPE;
349
Florin Coras15531972018-08-12 23:50:53 -0700350 fib_proto = session_endpoint_fib_proto (&a->sep);
351 table_index = application_session_table (client, fib_proto);
352 listener = session_lookup_listener (table_index, &a->sep);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700353 if (listener)
354 {
Florin Corasab2f6db2018-08-31 14:31:41 -0700355 server_wrk = application_listener_select_worker (listener,
356 0 /* is_local */ );
357 ll = (local_session_t *) listener;
358 return application_local_session_connect (client_wrk, server_wrk, ll,
359 a->api_context);
Florin Coras3cbc04b2017-10-02 00:18:51 -0700360 }
Florin Corascea194d2017-10-02 00:18:51 -0700361
362 /*
363 * Not connecting to a local server, propagate to transport
364 */
Florin Coras15531972018-08-12 23:50:53 -0700365 if (app_worker_open_session (client_wrk, &a->sep, a->api_context))
Florin Corascea194d2017-10-02 00:18:51 -0700366 return VNET_API_ERROR_SESSION_CONNECT;
367 return 0;
Dave Barach68b0fb02017-02-28 15:15:56 -0500368}
369
370/**
371 * unformat a vnet URI
372 *
Florin Coras8f89dd02018-03-05 16:53:07 -0800373 * transport-proto://[hostname]ip46-addr:port
374 * eg. tcp://ip46-addr:port
375 * tls://[testtsl.fd.io]ip46-addr:port
Dave Barach68b0fb02017-02-28 15:15:56 -0500376 *
377 * u8 ip46_address[16];
378 * u16 port_in_host_byte_order;
379 * stream_session_type_t sst;
380 * u8 *fifo_name;
381 *
382 * if (unformat (input, "%U", unformat_vnet_uri, &ip46_address,
383 * &sst, &port, &fifo_name))
384 * etc...
385 *
386 */
387uword
388unformat_vnet_uri (unformat_input_t * input, va_list * args)
389{
Florin Coras5665ced2018-10-25 18:03:45 -0700390 session_endpoint_cfg_t *sep = va_arg (*args, session_endpoint_cfg_t *);
Florin Coras371ca502018-02-21 12:07:41 -0800391 u32 transport_proto = 0, port;
392
Florin Coras8f89dd02018-03-05 16:53:07 -0800393 if (unformat (input, "%U://%U/%d", unformat_transport_proto,
394 &transport_proto, unformat_ip4_address, &sep->ip.ip4, &port))
395 {
396 sep->transport_proto = transport_proto;
397 sep->port = clib_host_to_net_u16 (port);
398 sep->is_ip4 = 1;
399 return 1;
400 }
401 else if (unformat (input, "%U://[%s]%U/%d", unformat_transport_proto,
402 &transport_proto, &sep->hostname, unformat_ip4_address,
403 &sep->ip.ip4, &port))
Dave Barach68b0fb02017-02-28 15:15:56 -0500404 {
Florin Coras4399c2e2018-01-25 06:34:42 -0800405 sep->transport_proto = transport_proto;
Florin Coras371ca502018-02-21 12:07:41 -0800406 sep->port = clib_host_to_net_u16 (port);
Florin Corascea194d2017-10-02 00:18:51 -0700407 sep->is_ip4 = 1;
Dave Barach68b0fb02017-02-28 15:15:56 -0500408 return 1;
409 }
Florin Coras371ca502018-02-21 12:07:41 -0800410 else if (unformat (input, "%U://%U/%d", unformat_transport_proto,
411 &transport_proto, unformat_ip6_address, &sep->ip.ip6,
412 &port))
Dave Barach68b0fb02017-02-28 15:15:56 -0500413 {
Florin Coras4399c2e2018-01-25 06:34:42 -0800414 sep->transport_proto = transport_proto;
Florin Coras371ca502018-02-21 12:07:41 -0800415 sep->port = clib_host_to_net_u16 (port);
Marco Varlese191a5942017-10-30 18:17:21 +0100416 sep->is_ip4 = 0;
417 return 1;
418 }
Florin Coras8f89dd02018-03-05 16:53:07 -0800419 else if (unformat (input, "%U://[%s]%U/%d", unformat_transport_proto,
420 &transport_proto, &sep->hostname, unformat_ip6_address,
421 &sep->ip.ip6, &port))
422 {
423 sep->transport_proto = transport_proto;
424 sep->port = clib_host_to_net_u16 (port);
425 sep->is_ip4 = 0;
426 return 1;
427 }
Dave Barach68b0fb02017-02-28 15:15:56 -0500428 return 0;
429}
430
Dave Barachb7f1faa2017-08-29 11:43:37 -0400431static u8 *cache_uri;
Florin Coras5665ced2018-10-25 18:03:45 -0700432static session_endpoint_cfg_t *cache_sep;
Dave Barachb7f1faa2017-08-29 11:43:37 -0400433
Dave Barach68b0fb02017-02-28 15:15:56 -0500434int
Florin Coras5665ced2018-10-25 18:03:45 -0700435parse_uri (char *uri, session_endpoint_cfg_t * sep)
Dave Barach68b0fb02017-02-28 15:15:56 -0500436{
437 unformat_input_t _input, *input = &_input;
438
Dave Barachb7f1faa2017-08-29 11:43:37 -0400439 if (cache_uri && !strncmp (uri, (char *) cache_uri, vec_len (cache_uri)))
440 {
Florin Corascea194d2017-10-02 00:18:51 -0700441 *sep = *cache_sep;
Dave Barachb7f1faa2017-08-29 11:43:37 -0400442 return 0;
443 }
444
Dave Barach68b0fb02017-02-28 15:15:56 -0500445 /* Make sure */
446 uri = (char *) format (0, "%s%c", uri, 0);
447
448 /* Parse uri */
449 unformat_init_string (input, uri, strlen (uri));
Florin Corascea194d2017-10-02 00:18:51 -0700450 if (!unformat (input, "%U", unformat_vnet_uri, sep))
Dave Barach68b0fb02017-02-28 15:15:56 -0500451 {
452 unformat_free (input);
453 return VNET_API_ERROR_INVALID_VALUE;
454 }
455 unformat_free (input);
456
Dave Barachb7f1faa2017-08-29 11:43:37 -0400457 vec_free (cache_uri);
458 cache_uri = (u8 *) uri;
Florin Corascea194d2017-10-02 00:18:51 -0700459 if (cache_sep)
460 clib_mem_free (cache_sep);
461 cache_sep = clib_mem_alloc (sizeof (*sep));
462 *cache_sep = *sep;
Dave Barachb7f1faa2017-08-29 11:43:37 -0400463
Dave Barach68b0fb02017-02-28 15:15:56 -0500464 return 0;
465}
466
Florin Corascea194d2017-10-02 00:18:51 -0700467static int
Florin Coras15531972018-08-12 23:50:53 -0700468app_validate_namespace (u8 * namespace_id, u64 secret, u32 * app_ns_index)
Florin Corascea194d2017-10-02 00:18:51 -0700469{
470 app_namespace_t *app_ns;
471 if (vec_len (namespace_id) == 0)
472 {
473 /* Use default namespace */
474 *app_ns_index = 0;
475 return 0;
476 }
477
478 *app_ns_index = app_namespace_index_from_id (namespace_id);
479 if (*app_ns_index == APP_NAMESPACE_INVALID_INDEX)
480 return VNET_API_ERROR_APP_INVALID_NS;
481 app_ns = app_namespace_get (*app_ns_index);
482 if (!app_ns)
483 return VNET_API_ERROR_APP_INVALID_NS;
484 if (app_ns->ns_secret != secret)
485 return VNET_API_ERROR_APP_WRONG_NS_SECRET;
486 return 0;
487}
488
Florin Coras3b4c64e2018-11-21 08:53:17 -0800489static u8 *
490app_name_from_api_index (u32 api_client_index)
491{
492 vl_api_registration_t *regp;
493 regp = vl_api_client_index_to_registration (api_client_index);
494 if (regp)
495 return format (0, "%s%c", regp->name, 0);
496
497 clib_warning ("api client index %u does not have an api registration!",
498 api_client_index);
499 return format (0, "unknown%c", 0);
500}
501
Florin Coras6cf30ad2017-04-04 23:08:23 -0700502/**
Florin Corascea194d2017-10-02 00:18:51 -0700503 * Attach application to vpp
Florin Coras6cf30ad2017-04-04 23:08:23 -0700504 *
505 * Allocates a vpp app, i.e., a structure that keeps back pointers
506 * to external app and a segment manager for shared memory fifo based
507 * communication with the external app.
508 */
Florin Corascea194d2017-10-02 00:18:51 -0700509clib_error_t *
Florin Coras6cf30ad2017-04-04 23:08:23 -0700510vnet_application_attach (vnet_app_attach_args_t * a)
Dave Barach68b0fb02017-02-28 15:15:56 -0500511{
Florin Corasb384b542018-01-15 01:08:33 -0800512 svm_fifo_segment_private_t *fs;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700513 application_t *app = 0;
Florin Coras15531972018-08-12 23:50:53 -0700514 app_worker_t *app_wrk;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700515 segment_manager_t *sm;
Florin Corascea194d2017-10-02 00:18:51 -0700516 u32 app_ns_index = 0;
Florin Corasc1f5a432018-11-20 11:31:26 -0800517 u8 *app_name = 0;
Florin Corasb384b542018-01-15 01:08:33 -0800518 u64 secret;
Dave Barach68b0fb02017-02-28 15:15:56 -0500519 int rv;
520
Florin Coras0bee9ce2018-03-22 21:24:31 -0700521 if (a->api_client_index != APP_INVALID_INDEX)
Florin Coras3b4c64e2018-11-21 08:53:17 -0800522 app = application_lookup (a->api_client_index);
Florin Coras0bee9ce2018-03-22 21:24:31 -0700523 else if (a->name)
524 app = application_lookup_name (a->name);
525 else
526 return clib_error_return_code (0, VNET_API_ERROR_INVALID_VALUE, 0,
527 "api index or name must be provided");
528
Florin Corascea194d2017-10-02 00:18:51 -0700529 if (app)
Florin Coras0bee9ce2018-03-22 21:24:31 -0700530 return clib_error_return_code (0, VNET_API_ERROR_APP_ALREADY_ATTACHED, 0,
531 "app already attached");
Florin Corascea194d2017-10-02 00:18:51 -0700532
Florin Coras3b4c64e2018-11-21 08:53:17 -0800533 if (a->api_client_index != APP_INVALID_INDEX)
534 {
535 app_name = app_name_from_api_index (a->api_client_index);
536 a->name = app_name;
537 }
538
Florin Corascea194d2017-10-02 00:18:51 -0700539 secret = a->options[APP_OPTIONS_NAMESPACE_SECRET];
Florin Coras15531972018-08-12 23:50:53 -0700540 if ((rv = app_validate_namespace (a->namespace_id, secret, &app_ns_index)))
Florin Corascea194d2017-10-02 00:18:51 -0700541 return clib_error_return_code (0, rv, 0, "namespace validation: %d", rv);
542 a->options[APP_OPTIONS_NAMESPACE] = app_ns_index;
Florin Coras15531972018-08-12 23:50:53 -0700543
544 if ((rv = application_alloc_and_init ((app_init_args_t *) a)))
Florin Corascea194d2017-10-02 00:18:51 -0700545 return clib_error_return_code (0, rv, 0, "app init: %d", rv);
Dave Barach68b0fb02017-02-28 15:15:56 -0500546
Florin Coras15531972018-08-12 23:50:53 -0700547 app = application_get (a->app_index);
548 if ((rv = app_worker_alloc_and_init (app, &app_wrk)))
549 return clib_error_return_code (0, rv, 0, "app default wrk init: %d", rv);
550
551 a->app_evt_q = app_wrk->event_queue;
Florin Corasc1f5a432018-11-20 11:31:26 -0800552 app_wrk->api_client_index = a->api_client_index;
Florin Coras15531972018-08-12 23:50:53 -0700553 sm = segment_manager_get (app_wrk->first_segment_manager);
Florin Corasa332c462018-01-31 06:52:17 -0800554 fs = segment_manager_get_segment_w_lock (sm, 0);
Dave Barach68b0fb02017-02-28 15:15:56 -0500555
Florin Coras7999e832017-10-31 01:51:04 -0700556 if (application_is_proxy (app))
557 application_setup_proxy (app);
558
Florin Corasb384b542018-01-15 01:08:33 -0800559 ASSERT (vec_len (fs->ssvm.name) <= 128);
560 a->segment = &fs->ssvm;
Florin Corasd85de682018-11-29 17:02:29 -0800561 a->segment_handle = segment_manager_segment_handle (sm, fs);
Florin Corasb384b542018-01-15 01:08:33 -0800562
Florin Corasa332c462018-01-31 06:52:17 -0800563 segment_manager_segment_reader_unlock (sm);
Florin Corasc1f5a432018-11-20 11:31:26 -0800564 vec_free (app_name);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700565 return 0;
566}
567
Florin Corascea194d2017-10-02 00:18:51 -0700568/**
569 * Detach application from vpp
570 */
Florin Coras6cf30ad2017-04-04 23:08:23 -0700571int
572vnet_application_detach (vnet_app_detach_args_t * a)
573{
574 application_t *app;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700575
Florin Coras4829bab2018-09-14 13:17:41 -0700576 app = application_get_if_valid (a->app_index);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700577 if (!app)
578 {
579 clib_warning ("app not attached");
580 return VNET_API_ERROR_APPLICATION_NOT_ATTACHED;
581 }
582
Florin Coras4829bab2018-09-14 13:17:41 -0700583 app_interface_check_thread_and_barrier (vnet_application_detach, a);
Florin Coras053a0e42018-11-13 15:52:38 -0800584 application_detach_process (app, a->api_client_index);
Dave Barach68b0fb02017-02-28 15:15:56 -0500585 return 0;
586}
587
Dave Barach68b0fb02017-02-28 15:15:56 -0500588int
Florin Coras6cf30ad2017-04-04 23:08:23 -0700589vnet_bind_uri (vnet_bind_args_t * a)
Dave Barach68b0fb02017-02-28 15:15:56 -0500590{
Florin Coras5665ced2018-10-25 18:03:45 -0700591 session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL;
Dave Barach68b0fb02017-02-28 15:15:56 -0500592 int rv;
593
Florin Corascea194d2017-10-02 00:18:51 -0700594 rv = parse_uri (a->uri, &sep);
Dave Barach68b0fb02017-02-28 15:15:56 -0500595 if (rv)
596 return rv;
Florin Coras41c9e042018-09-11 00:10:41 -0700597 sep.app_wrk_index = 0;
Florin Corasc3638fe2018-08-24 13:58:49 -0700598 clib_memcpy (&a->sep_ext, &sep, sizeof (sep));
Florin Corasab2f6db2018-08-31 14:31:41 -0700599 return vnet_bind_inline (a);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700600}
601
602int
603vnet_unbind_uri (vnet_unbind_args_t * a)
604{
Florin Coras5665ced2018-10-25 18:03:45 -0700605 session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL;
Florin Coras371ca502018-02-21 12:07:41 -0800606 stream_session_t *listener;
Florin Coras36ec1f52018-05-29 21:15:38 -0700607 u32 table_index;
Florin Coras6cf30ad2017-04-04 23:08:23 -0700608 int rv;
609
Florin Corascea194d2017-10-02 00:18:51 -0700610 rv = parse_uri (a->uri, &sep);
Florin Coras6cf30ad2017-04-04 23:08:23 -0700611 if (rv)
612 return rv;
613
Florin Coras36ec1f52018-05-29 21:15:38 -0700614 /* NOTE: only default fib tables supported for uri apis */
615 table_index = session_lookup_get_index_for_fib (fib_ip_proto (!sep.is_ip4),
616 0);
617 listener = session_lookup_listener (table_index,
618 (session_endpoint_t *) & sep);
Dave Barach68b0fb02017-02-28 15:15:56 -0500619 if (!listener)
620 return VNET_API_ERROR_ADDRESS_NOT_IN_USE;
Florin Corasab2f6db2018-08-31 14:31:41 -0700621 a->handle = listen_session_get_handle (listener);
622 return vnet_unbind_inline (a);
Dave Barach68b0fb02017-02-28 15:15:56 -0500623}
624
Florin Corascea194d2017-10-02 00:18:51 -0700625clib_error_t *
Dave Barach68b0fb02017-02-28 15:15:56 -0500626vnet_connect_uri (vnet_connect_args_t * a)
627{
Florin Coras5665ced2018-10-25 18:03:45 -0700628 session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL;
Dave Barach68b0fb02017-02-28 15:15:56 -0500629 int rv;
630
Dave Barach68b0fb02017-02-28 15:15:56 -0500631 /* Parse uri */
Florin Coras371ca502018-02-21 12:07:41 -0800632 rv = parse_uri (a->uri, &sep);
Dave Barach68b0fb02017-02-28 15:15:56 -0500633 if (rv)
Florin Corascea194d2017-10-02 00:18:51 -0700634 return clib_error_return_code (0, rv, 0, "app init: %d", rv);
Florin Coras371ca502018-02-21 12:07:41 -0800635
Florin Corasc3638fe2018-08-24 13:58:49 -0700636 clib_memcpy (&a->sep_ext, &sep, sizeof (sep));
Florin Coras15531972018-08-12 23:50:53 -0700637 if ((rv = application_connect (a)))
Florin Corascea194d2017-10-02 00:18:51 -0700638 return clib_error_return_code (0, rv, 0, "connect failed");
639 return 0;
Dave Barach68b0fb02017-02-28 15:15:56 -0500640}
641
642int
Florin Coras6cf30ad2017-04-04 23:08:23 -0700643vnet_disconnect_session (vnet_disconnect_args_t * a)
Dave Barach68b0fb02017-02-28 15:15:56 -0500644{
Florin Corasf8f516a2018-02-08 15:10:09 -0800645 if (session_handle_is_local (a->handle))
646 {
647 local_session_t *ls;
Florin Coras99368312018-08-02 10:45:44 -0700648
649 /* Disconnect reply came to worker 1 not main thread */
Florin Coras4829bab2018-09-14 13:17:41 -0700650 app_interface_check_thread_and_barrier (vnet_disconnect_session, a);
Florin Coras99368312018-08-02 10:45:44 -0700651
652 if (!(ls = application_get_local_session_from_handle (a->handle)))
653 return 0;
654
Florin Corasf8f516a2018-02-08 15:10:09 -0800655 return application_local_session_disconnect (a->app_index, ls);
656 }
657 else
658 {
Florin Coras21795132018-09-09 09:40:51 -0700659 app_worker_t *app_wrk;
Florin Corasf8f516a2018-02-08 15:10:09 -0800660 stream_session_t *s;
Florin Coras21795132018-09-09 09:40:51 -0700661
Florin Corasf8f516a2018-02-08 15:10:09 -0800662 s = session_get_from_handle_if_valid (a->handle);
Florin Coras21795132018-09-09 09:40:51 -0700663 if (!s)
664 return VNET_API_ERROR_INVALID_VALUE;
665 app_wrk = app_worker_get (s->app_wrk_index);
666 if (app_wrk->app_index != a->app_index)
Florin Corasf8f516a2018-02-08 15:10:09 -0800667 return VNET_API_ERROR_INVALID_VALUE;
Dave Barach68b0fb02017-02-28 15:15:56 -0500668
Florin Corasf8f516a2018-02-08 15:10:09 -0800669 /* We're peeking into another's thread pool. Make sure */
670 ASSERT (s->session_index == session_index_from_handle (a->handle));
Dave Barach68b0fb02017-02-28 15:15:56 -0500671
Florin Corasf8f516a2018-02-08 15:10:09 -0800672 stream_session_disconnect (s);
673 }
Dave Barach68b0fb02017-02-28 15:15:56 -0500674 return 0;
675}
676
Florin Corascea194d2017-10-02 00:18:51 -0700677clib_error_t *
Dave Barach68b0fb02017-02-28 15:15:56 -0500678vnet_bind (vnet_bind_args_t * a)
679{
Dave Barach68b0fb02017-02-28 15:15:56 -0500680 int rv;
Florin Corasab2f6db2018-08-31 14:31:41 -0700681 if ((rv = vnet_bind_inline (a)))
Florin Coras54693d22018-07-17 10:46:29 -0700682 return clib_error_return_code (0, rv, 0, "bind failed: %d", rv);
Dave Barach68b0fb02017-02-28 15:15:56 -0500683 return 0;
684}
685
Florin Corascea194d2017-10-02 00:18:51 -0700686clib_error_t *
Dave Barach68b0fb02017-02-28 15:15:56 -0500687vnet_unbind (vnet_unbind_args_t * a)
688{
Florin Corascea194d2017-10-02 00:18:51 -0700689 int rv;
Florin Corasab2f6db2018-08-31 14:31:41 -0700690 if ((rv = vnet_unbind_inline (a)))
Florin Coras54693d22018-07-17 10:46:29 -0700691 return clib_error_return_code (0, rv, 0, "unbind failed: %d", rv);
Florin Corascea194d2017-10-02 00:18:51 -0700692 return 0;
Dave Barach68b0fb02017-02-28 15:15:56 -0500693}
694
Florin Corascea194d2017-10-02 00:18:51 -0700695clib_error_t *
Dave Barach68b0fb02017-02-28 15:15:56 -0500696vnet_connect (vnet_connect_args_t * a)
697{
Florin Corascea194d2017-10-02 00:18:51 -0700698 int rv;
Florin Coras371ca502018-02-21 12:07:41 -0800699
Florin Coras15531972018-08-12 23:50:53 -0700700 if ((rv = application_connect (a)))
Florin Coras54693d22018-07-17 10:46:29 -0700701 return clib_error_return_code (0, rv, 0, "connect failed: %d", rv);
Florin Corascea194d2017-10-02 00:18:51 -0700702 return 0;
Dave Barach68b0fb02017-02-28 15:15:56 -0500703}
704
Dave Barach68b0fb02017-02-28 15:15:56 -0500705/*
706 * fd.io coding-style-patch-verification: ON
707 *
708 * Local Variables:
709 * eval: (c-set-style "gnu")
710 * End:
711 */