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:
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.
15 #include <vnet/session/application_interface.h>
17 #include <vnet/session/session.h>
18 #include <vlibmemory/api.h>
19 #include <vnet/dpo/load_balance.h>
20 #include <vnet/fib/ip4_fib.h>
23 VPP's application/session API bind/unbind/connect/disconnect calls
27 ip_is_zero (ip46_address_t * ip46_address, u8 is_ip4)
30 return (ip46_address->ip4.as_u32 == 0);
32 return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 0);
36 ip_is_local (ip46_address_t * ip46_address, u8 is_ip4)
39 fib_entry_flag_t flags;
42 /* Check if requester is local */
46 prefix.fp_proto = FIB_PROTOCOL_IP4;
51 prefix.fp_proto = FIB_PROTOCOL_IP6;
54 clib_memcpy (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t));
55 fei = fib_table_lookup (0, &prefix);
56 flags = fib_entry_get_flags (fei);
58 return (flags & FIB_ENTRY_FLAG_LOCAL);
62 api_parse_session_handle (u64 handle, u32 * session_index, u32 * thread_index)
64 session_manager_main_t *smm = vnet_get_session_manager_main ();
65 stream_session_t *pool;
67 *thread_index = handle & 0xFFFFFFFF;
68 *session_index = handle >> 32;
70 if (*thread_index >= vec_len (smm->sessions))
71 return VNET_API_ERROR_INVALID_VALUE;
73 pool = smm->sessions[*thread_index];
75 if (pool_is_free_index (pool, *session_index))
76 return VNET_API_ERROR_INVALID_VALUE_2;
82 vnet_bind_i (u32 api_client_index, ip46_address_t * ip46, u16 port_host_order,
83 session_type_t sst, u64 * options, session_cb_vft_t * cb_fns,
84 application_t ** app, u32 * len_seg_name, char *seg_name)
87 application_t *server = 0;
88 stream_session_t *listener;
92 stream_session_lookup_listener (ip46,
93 clib_host_to_net_u16 (port_host_order),
97 return VNET_API_ERROR_ADDRESS_IN_USE;
99 if (application_lookup (api_client_index))
101 clib_warning ("Only one connection supported for now");
102 return VNET_API_ERROR_ADDRESS_IN_USE;
105 is_ip4 = SESSION_TYPE_IP4_UDP == sst || SESSION_TYPE_IP4_TCP == sst;
106 if (!ip_is_zero (ip46, is_ip4) && !ip_is_local (ip46, is_ip4))
107 return VNET_API_ERROR_INVALID_VALUE;
109 /* Allocate and initialize stream server */
110 server = application_new (APP_SERVER, sst, api_client_index,
111 options[SESSION_OPTIONS_FLAGS], cb_fns);
113 application_server_init (server, options[SESSION_OPTIONS_SEGMENT_SIZE],
114 options[SESSION_OPTIONS_ADD_SEGMENT_SIZE],
115 options[SESSION_OPTIONS_RX_FIFO_SIZE],
116 options[SESSION_OPTIONS_TX_FIFO_SIZE],
119 /* Setup listen path down to transport */
120 stream_session_start_listen (server->index, ip46, port_host_order);
126 ASSERT (vec_len (segment_name) <= 128);
127 *len_seg_name = vec_len (segment_name);
128 memcpy (seg_name, segment_name, *len_seg_name);
135 vnet_unbind_i (u32 api_client_index)
137 application_t *server;
140 * Find the stream_server_t corresponding to the api client
142 server = application_lookup (api_client_index);
144 return VNET_API_ERROR_INVALID_VALUE_2;
146 /* Clear the listener */
147 stream_session_stop_listen (server->index);
148 application_del (server);
154 vnet_connect_i (u32 api_client_index, u32 api_context, session_type_t sst,
155 ip46_address_t * ip46, u16 port, u64 * options, void *mp,
156 session_cb_vft_t * cb_fns)
158 stream_session_t *listener;
159 application_t *server, *app;
162 * Figure out if connecting to a local server
164 listener = stream_session_lookup_listener (ip46,
165 clib_host_to_net_u16 (port),
169 server = application_get (listener->app_index);
172 * Server is willing to have a direct fifo connection created
173 * instead of going through the state machine, etc.
175 if (server->flags & SESSION_OPTIONS_FLAGS_USE_FIFO)
176 return server->cb_fns.
177 redirect_connect_callback (server->api_client_index, mp);
180 /* Create client app */
181 app = application_new (APP_CLIENT, sst, api_client_index,
182 options[SESSION_OPTIONS_FLAGS], cb_fns);
184 app->api_context = api_context;
187 * Not connecting to a local server. Create regular session
189 return stream_session_open (sst, ip46, port, app->index);
193 * unformat a vnet URI
196 * tcp://ip46-addr:port
197 * udp://ip46-addr:port
199 * u8 ip46_address[16];
200 * u16 port_in_host_byte_order;
201 * stream_session_type_t sst;
204 * if (unformat (input, "%U", unformat_vnet_uri, &ip46_address,
205 * &sst, &port, &fifo_name))
210 unformat_vnet_uri (unformat_input_t * input, va_list * args)
212 ip46_address_t *address = va_arg (*args, ip46_address_t *);
213 session_type_t *sst = va_arg (*args, session_type_t *);
214 u16 *port = va_arg (*args, u16 *);
216 if (unformat (input, "tcp://%U/%d", unformat_ip4_address, &address->ip4,
219 *sst = SESSION_TYPE_IP4_TCP;
222 if (unformat (input, "udp://%U/%d", unformat_ip4_address, &address->ip4,
225 *sst = SESSION_TYPE_IP4_UDP;
228 if (unformat (input, "udp://%U/%d", unformat_ip6_address, &address->ip6,
231 *sst = SESSION_TYPE_IP6_UDP;
234 if (unformat (input, "tcp://%U/%d", unformat_ip6_address, &address->ip6,
237 *sst = SESSION_TYPE_IP6_TCP;
245 parse_uri (char *uri, session_type_t * sst, ip46_address_t * addr,
246 u16 * port_number_host_byte_order)
248 unformat_input_t _input, *input = &_input;
251 uri = (char *) format (0, "%s%c", uri, 0);
254 unformat_init_string (input, uri, strlen (uri));
255 if (!unformat (input, "%U", unformat_vnet_uri, addr, sst,
256 port_number_host_byte_order))
258 unformat_free (input);
259 return VNET_API_ERROR_INVALID_VALUE;
261 unformat_free (input);
267 vnet_bind_uri (vnet_bind_args_t * a)
269 application_t *server = 0;
271 session_type_t sst = SESSION_N_TYPES;
275 memset (&ip46, 0, sizeof (ip46));
276 rv = parse_uri (a->uri, &sst, &ip46, &port_host_order);
280 if ((rv = vnet_bind_i (a->api_client_index, &ip46, port_host_order, sst,
281 a->options, a->session_cb_vft, &server,
282 &a->segment_name_length, a->segment_name)))
285 a->server_event_queue_address = (u64) server->event_queue;
290 session_type_from_proto_and_ip (session_api_proto_t proto, u8 is_ip4)
292 if (proto == SESSION_PROTO_TCP)
295 return SESSION_TYPE_IP4_TCP;
297 return SESSION_TYPE_IP6_TCP;
302 return SESSION_TYPE_IP4_UDP;
304 return SESSION_TYPE_IP6_UDP;
307 return SESSION_N_TYPES;
311 vnet_unbind_uri (char *uri, u32 api_client_index)
313 u16 port_number_host_byte_order;
314 session_type_t sst = SESSION_N_TYPES;
315 ip46_address_t ip46_address;
316 stream_session_t *listener;
319 rv = parse_uri (uri, &sst, &ip46_address, &port_number_host_byte_order);
324 stream_session_lookup_listener (&ip46_address,
326 (port_number_host_byte_order), sst);
329 return VNET_API_ERROR_ADDRESS_NOT_IN_USE;
331 /* External client? */
332 if (api_client_index != ~0)
334 ASSERT (vl_api_client_index_to_registration (api_client_index));
337 return vnet_unbind_i (api_client_index);
341 vnet_connect_uri (vnet_connect_args_t * a)
343 ip46_address_t ip46_address;
349 app = application_lookup (a->api_client_index);
352 clib_warning ("Already have a connect from this app");
353 return VNET_API_ERROR_INVALID_VALUE_2;
357 rv = parse_uri (a->uri, &sst, &ip46_address, &port);
361 return vnet_connect_i (a->api_client_index, a->api_context, sst,
362 &ip46_address, port, a->options, a->mp,
367 vnet_disconnect_session (u32 session_index, u32 thread_index)
369 stream_session_t *session;
371 session = stream_session_get (session_index, thread_index);
372 stream_session_disconnect (session);
379 vnet_bind (vnet_bind_args_t * a)
381 application_t *server = 0;
382 session_type_t sst = SESSION_N_TYPES;
385 sst = session_type_from_proto_and_ip (a->proto, a->tep.is_ip4);
386 if ((rv = vnet_bind_i (a->api_client_index, &a->tep.ip, a->tep.port, sst,
387 a->options, a->session_cb_vft, &server,
388 &a->segment_name_length, a->segment_name)))
391 a->server_event_queue_address = (u64) server->event_queue;
392 a->handle = (u64) a->tep.vrf << 32 | (u64) server->session_index;
397 vnet_unbind (vnet_unbind_args_t * a)
399 application_t *server;
401 if (a->api_client_index != ~0)
403 ASSERT (vl_api_client_index_to_registration (a->api_client_index));
406 /* Make sure this is the right one */
407 server = application_lookup (a->api_client_index);
408 ASSERT (server->session_index == (0xFFFFFFFF & a->handle));
410 /* TODO use handle to disambiguate namespaces/vrfs */
411 return vnet_unbind_i (a->api_client_index);
415 vnet_connect (vnet_connect_args_t * a)
420 app = application_lookup (a->api_client_index);
423 clib_warning ("Already have a connect from this app");
424 return VNET_API_ERROR_INVALID_VALUE_2;
427 sst = session_type_from_proto_and_ip (a->proto, a->tep.is_ip4);
428 return vnet_connect_i (a->api_client_index, a->api_context, sst, &a->tep.ip,
429 a->tep.port, a->options, a->mp, a->session_cb_vft);
433 vnet_disconnect (vnet_disconnect_args_t * a)
435 stream_session_t *session;
436 u32 session_index, thread_index;
438 if (api_parse_session_handle (a->handle, &session_index, &thread_index))
440 clib_warning ("Invalid handle");
444 session = stream_session_get (session_index, thread_index);
445 stream_session_disconnect (session);
451 * fd.io coding-style-patch-verification: ON
454 * eval: (c-set-style "gnu")