2 * Copyright (c) 2016-2019 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 #ifndef __included_uri_h__
16 #define __included_uri_h__
18 #include <vlibmemory/api.h>
19 #include <svm/message_queue.h>
20 #include <vnet/session/session_types.h>
21 #include <vnet/tls/tls_test.h>
22 #include <svm/fifo_segment.h>
24 typedef struct certificate_
26 u32 *app_interests; /* vec of application index asking for deletion cb */
27 u32 cert_key_index; /* index in cert & key pool */
30 } app_cert_key_pair_t;
32 typedef struct session_cb_vft_
34 /** Notify server of new segment */
35 int (*add_segment_callback) (u32 app_wrk_index, u64 segment_handle);
37 /** Notify server of new segment */
38 int (*del_segment_callback) (u32 app_wrk_index, u64 segment_handle);
40 /** Notify server of newly accepted session */
41 int (*session_accept_callback) (session_t * new_session);
43 /** Connection request callback */
44 int (*session_connected_callback) (u32 app_wrk_index, u32 opaque,
45 session_t * s, session_error_t code);
47 /** Notify app that session is closing */
48 void (*session_disconnect_callback) (session_t * s);
50 /** Notify app that transport is closed */
51 void (*session_transport_closed_callback) (session_t * s);
53 /** Notify app that session or transport are about to be removed */
54 void (*session_cleanup_callback) (session_t * s, session_cleanup_ntf_t ntf);
56 /** Notify app that session was reset */
57 void (*session_reset_callback) (session_t * s);
59 /** Notify app that session pool migration happened */
60 void (*session_migrate_callback) (session_t * s, session_handle_t new_sh);
62 /** Direct RX callback for built-in application */
63 int (*builtin_app_rx_callback) (session_t * session);
65 /** Direct TX callback for built-in application */
66 int (*builtin_app_tx_callback) (session_t * session);
68 /** Cert and key pair delete notification */
69 int (*app_cert_key_pair_delete_callback) (app_cert_key_pair_t * ckpair);
71 /** Delegate fifo-tuning-logic to application */
72 int (*fifo_tuning_callback) (session_t * s, svm_fifo_t * f,
73 session_ft_action_t act, u32 bytes);
77 #define foreach_app_init_args \
78 _(u32, api_client_index) \
81 _(u8 *, namespace_id) \
82 _(session_cb_vft_t *, session_cb_vft) \
86 typedef struct _vnet_app_attach_args_t
88 #define _(_type, _name) _type _name;
91 ssvm_private_t * segment;
92 svm_msg_q_t *app_evt_q;
94 } vnet_app_attach_args_t;
96 typedef struct _vnet_app_detach_args_t
100 } vnet_app_detach_args_t;
102 typedef struct _vnet_bind_args_t
106 session_endpoint_cfg_t sep_ext;
107 session_endpoint_t sep;
118 } vnet_listen_args_t;
120 typedef struct _vnet_unlisten_args_t
125 u64 handle; /**< Session handle */
127 u32 app_index; /**< Owning application index */
128 u32 wrk_map_index; /**< App's local pool worker index */
129 } vnet_unlisten_args_t;
131 typedef struct _vnet_connect_args
135 session_endpoint_cfg_t sep_ext;
136 session_endpoint_t sep;
143 /* Resulting session, or half-open session, if connect successful */
145 } vnet_connect_args_t;
147 typedef struct _vnet_shutdown_args_t
149 session_handle_t handle;
151 } vnet_shutdown_args_t;
153 typedef struct _vnet_disconnect_args_t
155 session_handle_t handle;
157 } vnet_disconnect_args_t;
159 typedef struct _vnet_application_add_tls_cert_args_t
163 } vnet_app_add_tls_cert_args_t;
165 typedef struct _vnet_application_add_tls_key_args_t
169 } vnet_app_add_tls_key_args_t;
171 typedef enum crypto_engine_type_
174 CRYPTO_ENGINE_OPENSSL,
175 CRYPTO_ENGINE_MBEDTLS,
177 CRYPTO_ENGINE_PICOTLS,
178 CRYPTO_ENGINE_LAST = CRYPTO_ENGINE_PICOTLS,
179 } crypto_engine_type_t;
181 typedef struct _vnet_app_add_cert_key_pair_args_
188 } vnet_app_add_cert_key_pair_args_t;
190 typedef struct crypto_ctx_
192 u32 ctx_index; /**< index in crypto context pool */
193 u32 n_subscribers; /**< refcount of sessions using said context */
194 u32 ckpair_index; /**< certificate & key */
196 void *data; /**< protocol specific data */
199 /* Application attach options */
203 APP_OPTIONS_EVT_QUEUE_SIZE,
204 APP_OPTIONS_SEGMENT_SIZE,
205 APP_OPTIONS_ADD_SEGMENT_SIZE,
206 APP_OPTIONS_PRIVATE_SEGMENT_COUNT,
207 APP_OPTIONS_RX_FIFO_SIZE,
208 APP_OPTIONS_TX_FIFO_SIZE,
209 APP_OPTIONS_PREALLOC_FIFO_PAIRS,
210 APP_OPTIONS_PREALLOC_FIFO_HDRS,
211 APP_OPTIONS_NAMESPACE,
212 APP_OPTIONS_NAMESPACE_SECRET,
213 APP_OPTIONS_PROXY_TRANSPORT,
214 APP_OPTIONS_ACCEPT_COOKIE,
215 APP_OPTIONS_TLS_ENGINE,
216 APP_OPTIONS_MAX_FIFO_SIZE,
217 APP_OPTIONS_HIGH_WATERMARK,
218 APP_OPTIONS_LOW_WATERMARK,
219 APP_OPTIONS_PCT_FIRST_ALLOC,
220 APP_OPTIONS_N_OPTIONS
221 } app_attach_options_index_t;
223 #define foreach_app_options_flags \
224 _(ACCEPT_REDIRECT, "Use FIFO with redirects") \
225 _(ADD_SEGMENT, "Add segment and signal app if needed") \
226 _(IS_BUILTIN, "Application is builtin") \
227 _(IS_TRANSPORT_APP, "Application is a transport proto") \
228 _(IS_PROXY, "Application is proxying") \
229 _(USE_GLOBAL_SCOPE, "App can use global session scope") \
230 _(USE_LOCAL_SCOPE, "App can use local session scope") \
231 _(EVT_MQ_USE_EVENTFD, "Use eventfds for signaling") \
233 typedef enum _app_options
235 #define _(sym, str) APP_OPTIONS_##sym,
236 foreach_app_options_flags
240 typedef enum _app_options_flags
242 #define _(sym, str) APP_OPTIONS_FLAGS_##sym = 1 << APP_OPTIONS_##sym,
243 foreach_app_options_flags
245 } app_options_flags_t;
247 #define foreach_fd_type \
248 _(VPP_MQ_SEGMENT, "Fd for vpp's event mq segment") \
249 _(MEMFD_SEGMENT, "Fd for memfd segment") \
250 _(MQ_EVENTFD, "Event fd used by message queue") \
251 _(VPP_MQ_EVENTFD, "Event fd used by vpp's message queue") \
253 typedef enum session_fd_type_
255 #define _(sym, str) SESSION_FD_##sym,
261 typedef enum session_fd_flag_
263 #define _(sym, str) SESSION_FD_F_##sym = 1 << SESSION_FD_##sym,
268 int parse_uri (char *uri, session_endpoint_cfg_t * sep);
269 int vnet_bind_uri (vnet_listen_args_t *);
270 int vnet_unbind_uri (vnet_unlisten_args_t * a);
271 int vnet_connect_uri (vnet_connect_args_t * a);
273 int vnet_application_attach (vnet_app_attach_args_t * a);
274 int vnet_application_detach (vnet_app_detach_args_t * a);
275 int vnet_listen (vnet_listen_args_t * a);
276 int vnet_connect (vnet_connect_args_t * a);
277 int vnet_unlisten (vnet_unlisten_args_t * a);
278 int vnet_shutdown_session (vnet_shutdown_args_t *a);
279 int vnet_disconnect_session (vnet_disconnect_args_t * a);
281 int vnet_app_add_cert_key_pair (vnet_app_add_cert_key_pair_args_t * a);
282 int vnet_app_del_cert_key_pair (u32 index);
283 /** Ask for app cb on pair deletion */
284 int vnet_app_add_cert_key_interest (u32 index, u32 app_index);
286 typedef struct app_session_transport_
288 ip46_address_t rmt_ip; /**< remote ip */
289 ip46_address_t lcl_ip; /**< local ip */
290 u16 rmt_port; /**< remote port (network order) */
291 u16 lcl_port; /**< local port (network order) */
292 u8 is_ip4; /**< set if uses ip4 networking */
293 } app_session_transport_t;
295 #define foreach_app_session_field \
296 _(svm_fifo_t, *rx_fifo) /**< rx fifo */ \
297 _(svm_fifo_t, *tx_fifo) /**< tx fifo */ \
298 _(session_type_t, session_type) /**< session type */ \
299 _(volatile u8, session_state) /**< session state */ \
300 _(u32, session_index) /**< index in owning pool */ \
301 _(app_session_transport_t, transport) /**< transport info */ \
302 _(svm_msg_q_t, *vpp_evt_q) /**< vpp event queue */ \
303 _(u8, is_dgram) /**< flag for dgram mode */ \
307 #define _(type, name) type name;
308 foreach_app_session_field
312 typedef struct session_listen_msg_
315 u32 context; /* Not needed but keeping it for compatibility with bapi */
324 } __clib_packed session_listen_msg_t;
326 STATIC_ASSERT (sizeof (session_listen_msg_t) <= SESSION_CTRL_MSG_MAX_SIZE,
329 typedef struct session_listen_uri_msg_
334 } __clib_packed session_listen_uri_msg_t;
336 STATIC_ASSERT (sizeof (session_listen_uri_msg_t) <= SESSION_CTRL_MSG_MAX_SIZE,
339 typedef struct session_bound_msg_
351 } __clib_packed session_bound_msg_t;
353 typedef struct session_unlisten_msg_
358 session_handle_t handle;
359 } __clib_packed session_unlisten_msg_t;
361 typedef struct session_unlisten_reply_msg_
366 } __clib_packed session_unlisten_reply_msg_t;
368 typedef struct session_accepted_msg_
373 uword server_rx_fifo;
374 uword server_tx_fifo;
376 uword vpp_event_queue_address;
378 transport_endpoint_t rmt;
380 } __clib_packed session_accepted_msg_t;
382 typedef struct session_accepted_reply_msg_
387 } __clib_packed session_accepted_reply_msg_t;
389 typedef struct session_connect_msg_
400 ip46_address_t lcl_ip;
406 } __clib_packed session_connect_msg_t;
408 STATIC_ASSERT (sizeof (session_connect_msg_t) <= SESSION_CTRL_MSG_MAX_SIZE,
411 typedef struct session_connect_uri_msg_
416 } __clib_packed session_connect_uri_msg_t;
418 STATIC_ASSERT (sizeof (session_connect_uri_msg_t) <=
419 SESSION_CTRL_MSG_MAX_SIZE, "msg too large");
421 typedef struct session_connected_msg_
426 uword server_rx_fifo;
427 uword server_tx_fifo;
431 u64 ct_segment_handle;
432 uword vpp_event_queue_address;
434 u8 segment_name_length;
436 transport_endpoint_t lcl;
437 } __clib_packed session_connected_msg_t;
439 typedef struct session_shutdown_msg_
443 session_handle_t handle;
444 } __clib_packed session_shutdown_msg_t;
446 typedef struct session_disconnect_msg_
450 session_handle_t handle;
451 } __clib_packed session_disconnect_msg_t;
453 typedef struct session_disconnected_msg_
458 } __clib_packed session_disconnected_msg_t;
460 typedef struct session_disconnected_reply_msg_
465 } __clib_packed session_disconnected_reply_msg_t;
467 typedef struct session_reset_msg_
472 } __clib_packed session_reset_msg_t;
474 typedef struct session_reset_reply_msg_
479 } __clib_packed session_reset_reply_msg_t;
481 typedef struct session_req_worker_update_msg_
484 } __clib_packed session_req_worker_update_msg_t;
486 /* NOTE: using u16 for wrk indices because message needs to fit in 18B */
487 typedef struct session_worker_update_msg_
493 } __clib_packed session_worker_update_msg_t;
495 typedef struct session_worker_update_reply_msg_
501 } __clib_packed session_worker_update_reply_msg_t;
503 typedef struct session_app_detach_msg_
507 } session_app_detach_msg_t;
509 typedef struct app_map_another_segment_msg_
515 u8 segment_name[128];
517 } session_app_add_segment_msg_t;
519 typedef struct app_unmap_segment_msg_
524 } session_app_del_segment_msg_t;
526 typedef struct session_migrate_msg_
529 session_handle_t handle;
530 session_handle_t new_handle;
532 u32 vpp_thread_index;
533 } __clib_packed session_migrated_msg_t;
535 typedef struct session_cleanup_msg_
537 session_handle_t handle;
539 } __clib_packed session_cleanup_msg_t;
541 typedef struct session_app_wrk_rpc_msg_
543 u32 client_index; /**< app client index */
544 u32 wrk_index; /**< dst worker index */
545 u8 data[64]; /**< rpc data */
546 } __clib_packed session_app_wrk_rpc_msg_t;
548 typedef struct session_transport_attr_msg_
551 session_handle_t handle;
552 transport_endpt_attr_t attr;
554 } __clib_packed session_transport_attr_msg_t;
556 typedef struct session_transport_attr_reply_msg_
559 session_handle_t handle;
560 transport_endpt_attr_t attr;
562 } __clib_packed session_transport_attr_reply_msg_t;
564 typedef struct app_session_event_
567 session_event_t *evt;
568 } __clib_packed app_session_evt_t;
571 app_alloc_ctrl_evt_to_vpp (svm_msg_q_t * mq, app_session_evt_t * app_evt,
574 svm_msg_q_lock_and_alloc_msg_w_ring (mq,
575 SESSION_MQ_CTRL_EVT_RING,
576 SVM_Q_WAIT, &app_evt->msg);
577 app_evt->evt = svm_msg_q_msg_data (mq, &app_evt->msg);
578 clib_memset (app_evt->evt, 0, sizeof (*app_evt->evt));
579 app_evt->evt->event_type = evt_type;
583 app_send_ctrl_evt_to_vpp (svm_msg_q_t * mq, app_session_evt_t * app_evt)
585 svm_msg_q_add_and_unlock (mq, &app_evt->msg);
589 * Send fifo io event to vpp worker thread
591 * Because there may be multiple writers to one of vpp's queues, this
592 * protects message allocation and enqueueing.
594 * @param mq vpp message queue
595 * @param f fifo for which the event is sent
596 * @param evt_type type of event
597 * @param noblock flag to indicate is request is blocking or not
598 * @return 0 if success, negative integer otherwise
601 app_send_io_evt_to_vpp (svm_msg_q_t * mq, u32 session_index, u8 evt_type,
604 session_event_t *evt;
609 if (svm_msg_q_try_lock (mq))
611 if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING)
612 || svm_msg_q_is_full (mq)))
614 svm_msg_q_unlock (mq);
617 msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
618 evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
619 evt->session_index = session_index;
620 evt->event_type = evt_type;
621 svm_msg_q_add_and_unlock (mq, &msg);
627 while (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING)
628 || svm_msg_q_is_full (mq))
629 svm_msg_q_wait_prod (mq);
630 msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
631 evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
632 evt->session_index = session_index;
633 evt->event_type = evt_type;
634 svm_msg_q_add_and_unlock (mq, &msg);
640 app_send_dgram_raw (svm_fifo_t * f, app_session_transport_t * at,
641 svm_msg_q_t * vpp_evt_q, u8 * data, u32 len, u8 evt_type,
642 u8 do_evt, u8 noblock)
644 session_dgram_hdr_t hdr;
647 if (svm_fifo_max_enqueue_prod (f) < (sizeof (session_dgram_hdr_t) + len))
650 hdr.data_length = len;
652 clib_memcpy_fast (&hdr.rmt_ip, &at->rmt_ip, sizeof (ip46_address_t));
653 hdr.is_ip4 = at->is_ip4;
654 hdr.rmt_port = at->rmt_port;
655 clib_memcpy_fast (&hdr.lcl_ip, &at->lcl_ip, sizeof (ip46_address_t));
656 hdr.lcl_port = at->lcl_port;
659 svm_fifo_seg_t segs[2] = {{ (u8 *) &hdr, sizeof (hdr) }, { data, len }};
662 rv = svm_fifo_enqueue_segments (f, segs, 2, 0 /* allow partial */ );
663 if (PREDICT_FALSE (rv < 0))
668 if (svm_fifo_set_event (f))
669 app_send_io_evt_to_vpp (vpp_evt_q, f->shr->master_session_index,
676 app_send_dgram (app_session_t * s, u8 * data, u32 len, u8 noblock)
678 return app_send_dgram_raw (s->tx_fifo, &s->transport, s->vpp_evt_q, data,
679 len, SESSION_IO_EVT_TX, 1 /* do_evt */ ,
684 app_send_stream_raw (svm_fifo_t * f, svm_msg_q_t * vpp_evt_q, u8 * data,
685 u32 len, u8 evt_type, u8 do_evt, u8 noblock)
689 rv = svm_fifo_enqueue (f, len, data);
692 if (rv > 0 && svm_fifo_set_event (f))
693 app_send_io_evt_to_vpp (vpp_evt_q, f->shr->master_session_index,
700 app_send_stream (app_session_t * s, u8 * data, u32 len, u8 noblock)
702 return app_send_stream_raw (s->tx_fifo, s->vpp_evt_q, data, len,
703 SESSION_IO_EVT_TX, 1 /* do_evt */ , noblock);
707 app_send (app_session_t * s, u8 * data, u32 len, u8 noblock)
710 return app_send_dgram (s, data, len, noblock);
711 return app_send_stream (s, data, len, noblock);
715 app_recv_dgram_raw (svm_fifo_t * f, u8 * buf, u32 len,
716 app_session_transport_t * at, u8 clear_evt, u8 peek)
718 session_dgram_pre_hdr_t ph;
722 max_deq = svm_fifo_max_dequeue_cons (f);
723 if (max_deq <= sizeof (session_dgram_hdr_t))
726 svm_fifo_unset_event (f);
731 svm_fifo_unset_event (f);
733 svm_fifo_peek (f, 0, sizeof (ph), (u8 *) & ph);
734 ASSERT (ph.data_length >= ph.data_offset);
736 /* Check if we have the full dgram */
737 if (max_deq < (ph.data_length + SESSION_CONN_HDR_LEN)
738 && len >= ph.data_length)
741 svm_fifo_peek (f, sizeof (ph), sizeof (*at), (u8 *) at);
742 len = clib_min (len, ph.data_length - ph.data_offset);
743 rv = svm_fifo_peek (f, ph.data_offset + SESSION_CONN_HDR_LEN, len, buf);
747 /* Discards data that did not fit in buffer */
748 svm_fifo_dequeue_drop (f, ph.data_length + SESSION_CONN_HDR_LEN);
754 app_recv_dgram (app_session_t * s, u8 * buf, u32 len)
756 return app_recv_dgram_raw (s->rx_fifo, buf, len, &s->transport, 1, 0);
760 app_recv_stream_raw (svm_fifo_t * f, u8 * buf, u32 len, u8 clear_evt, u8 peek)
763 svm_fifo_unset_event (f);
766 return svm_fifo_peek (f, 0, len, buf);
768 return svm_fifo_dequeue (f, len, buf);
772 app_recv_stream (app_session_t * s, u8 * buf, u32 len)
774 return app_recv_stream_raw (s->rx_fifo, buf, len, 1, 0);
778 app_recv (app_session_t * s, u8 * data, u32 len)
781 return app_recv_dgram (s, data, len);
782 return app_recv_stream (s, data, len);
786 static char *session_error_str[] = {
787 #define _(sym, str) str,
788 foreach_session_error
794 format_session_error (u8 * s, va_list * args)
796 session_error_t error = va_arg (*args, session_error_t);
797 if (-error >= 0 && -error < SESSION_N_ERRORS)
798 s = format (s, "%s", session_error_str[-error]);
800 s = format (s, "invalid session err %u", -error);
805 * Socket API messages
808 typedef enum app_sapi_msg_type
810 APP_SAPI_MSG_TYPE_NONE,
811 APP_SAPI_MSG_TYPE_ATTACH,
812 APP_SAPI_MSG_TYPE_ATTACH_REPLY,
813 APP_SAPI_MSG_TYPE_ADD_DEL_WORKER,
814 APP_SAPI_MSG_TYPE_ADD_DEL_WORKER_REPLY,
815 APP_SAPI_MSG_TYPE_SEND_FDS,
816 } __clib_packed app_sapi_msg_type_e;
818 typedef struct app_sapi_attach_msg_
822 } __clib_packed app_sapi_attach_msg_t;
824 STATIC_ASSERT (sizeof (u64) * APP_OPTIONS_N_OPTIONS <=
825 sizeof (((app_sapi_attach_msg_t *) 0)->options),
826 "Out of options, fix message definition");
828 typedef struct app_sapi_attach_reply_msg_
835 u32 api_client_handle;
836 u8 vpp_ctrl_mq_thread;
839 } __clib_packed app_sapi_attach_reply_msg_t;
841 typedef struct app_sapi_worker_add_del_msg_
846 } __clib_packed app_sapi_worker_add_del_msg_t;
848 typedef struct app_sapi_worker_add_del_reply_msg_
852 u64 app_event_queue_address;
854 u32 api_client_handle;
858 } __clib_packed app_sapi_worker_add_del_reply_msg_t;
860 typedef struct app_sapi_msg_
862 app_sapi_msg_type_e type;
865 app_sapi_attach_msg_t attach;
866 app_sapi_attach_reply_msg_t attach_reply;
867 app_sapi_worker_add_del_msg_t worker_add_del;
868 app_sapi_worker_add_del_reply_msg_t worker_add_del_reply;
870 } __clib_packed app_sapi_msg_t;
873 session_endpoint_alloc_ext_cfg (session_endpoint_cfg_t *sep_ext,
874 transport_endpt_ext_cfg_type_t type)
876 transport_endpt_ext_cfg_t *cfg;
879 cfg_size = sizeof (transport_endpt_ext_cfg_t);
880 cfg = clib_mem_alloc (cfg_size);
881 clib_memset (cfg, 0, cfg_size);
883 sep_ext->ext_cfg = cfg;
886 #endif /* __included_uri_h__ */
889 * fd.io coding-style-patch-verification: ON
892 * eval: (c-set-style "gnu")