2 * Copyright (c) 2018-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (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.
16 #ifndef SRC_VCL_VCL_PRIVATE_H_
17 #define SRC_VCL_VCL_PRIVATE_H_
19 #include <vnet/session/application_interface.h>
20 #include <vcl/vppcom.h>
21 #include <vcl/vcl_debug.h>
24 /* Set VPPCOM_DEBUG_INIT 2 for connection debug,
25 * 3 for read/write debug output
27 * export VCL_DEBUG=<#> to set dynamically.
29 #define VPPCOM_DEBUG_INIT 1
31 #define VPPCOM_DEBUG_INIT 0
34 #define VPPCOM_DEBUG vcm->debug
36 extern __thread uword __vcl_worker_index;
39 vcl_set_worker_index (uword wrk_index)
41 __vcl_worker_index = wrk_index;
45 vcl_get_worker_index (void)
47 return __vcl_worker_index;
51 * VPPCOM Private definitions and functions.
59 STATE_APP_ADDING_WORKER,
60 STATE_APP_ADDING_TLS_DATA,
71 STATE_VPP_CLOSING = 0x08,
72 STATE_DISCONNECT = 0x10,
75 STATE_LISTEN_NO_MQ = 0x80,
76 } vcl_session_state_t;
78 #define SERVER_STATE_OPEN (STATE_ACCEPT|STATE_VPP_CLOSING)
79 #define CLIENT_STATE_OPEN (STATE_CONNECT|STATE_VPP_CLOSING)
80 #define STATE_OPEN (SERVER_STATE_OPEN | CLIENT_STATE_OPEN)
82 typedef struct epoll_event vppcom_epoll_event_t;
89 vppcom_epoll_event_t ev;
90 #define VEP_DEFAULT_ET_MASK (EPOLLIN|EPOLLOUT)
91 #define VEP_UNSUPPORTED_EVENTS (EPOLLONESHOT|EPOLLEXCLUSIVE)
95 /* Select uses the vcl_si_set as if a clib_bitmap. Make sure they are the
97 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (vcl_si_set),
98 "vppcom bitmap size mismatch");
106 #define VCL_ACCEPTED_F_CLOSED (1 << 0)
107 #define VCL_ACCEPTED_F_RESET (1 << 1)
109 typedef struct vcl_session_msg
114 session_accepted_msg_t accepted_msg;
121 VCL_SESS_ATTR_SERVER,
122 VCL_SESS_ATTR_CUT_THRU,
124 VCL_SESS_ATTR_VEP_SESSION,
125 VCL_SESS_ATTR_LISTEN, // SOL_SOCKET,SO_ACCEPTCONN
126 VCL_SESS_ATTR_NONBLOCK, // fcntl,O_NONBLOCK
127 VCL_SESS_ATTR_REUSEADDR, // SOL_SOCKET,SO_REUSEADDR
128 VCL_SESS_ATTR_REUSEPORT, // SOL_SOCKET,SO_REUSEPORT
129 VCL_SESS_ATTR_BROADCAST, // SOL_SOCKET,SO_BROADCAST
130 VCL_SESS_ATTR_V6ONLY, // SOL_TCP,IPV6_V6ONLY
131 VCL_SESS_ATTR_KEEPALIVE, // SOL_SOCKET,SO_KEEPALIVE
132 VCL_SESS_ATTR_TCP_NODELAY, // SOL_TCP,TCP_NODELAY
133 VCL_SESS_ATTR_TCP_KEEPIDLE, // SOL_TCP,TCP_KEEPIDLE
134 VCL_SESS_ATTR_TCP_KEEPINTVL, // SOL_TCP,TCP_KEEPINTVL
135 VCL_SESS_ATTR_SHUT_RD,
136 VCL_SESS_ATTR_SHUT_WR,
138 } vppcom_session_attr_t;
140 #define VCL_SESS_ATTR_SET(ATTR, VAL) \
142 (ATTR) |= 1 << (VAL); \
145 #define VCL_SESS_ATTR_CLR(ATTR, VAL) \
147 (ATTR) &= ~(1 << (VAL)); \
150 #define VCL_SESS_ATTR_TEST(ATTR, VAL) \
151 ((ATTR) & (1 << (VAL)) ? 1 : 0)
155 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
156 #define _(type, name) type name;
157 foreach_app_session_field
159 u32 sndbuf_size; // VPP-TBD: Hack until support setsockopt(SO_SNDBUF)
160 u32 rcvbuf_size; // VPP-TBD: Hack until support setsockopt(SO_RCVBUF)
161 u32 user_mss; // VPP-TBD: Hack until support setsockopt(TCP_MAXSEG)
163 u32 vpp_thread_index;
165 svm_fifo_t *ct_rx_fifo;
166 svm_fifo_t *ct_tx_fifo;
168 /* Socket configuration state */
171 /* VCL session index of the listening session (if any) */
173 /* Accepted sessions on this listener */
174 int n_accepted_sessions;
180 svm_msg_q_t *our_evt_q;
181 vcl_session_msg_t *accept_evts_fifo;
183 elog_track_t elog_track;
187 typedef struct vppcom_cfg_t_
191 u32 vpp_api_q_length;
192 uword segment_baseva;
194 u32 add_segment_size;
195 u32 preallocated_fifo_pairs;
198 u32 event_queue_size;
199 u32 listen_queue_size;
200 u8 app_proxy_transport_tcp;
201 u8 app_proxy_transport_udp;
205 u64 namespace_secret;
211 char *event_log_path;
212 u8 *vpp_api_filename;
213 u8 *vpp_api_socket_name;
217 void vppcom_cfg (vppcom_cfg_t * vcl_cfg);
219 typedef struct vcl_cut_through_registration_
222 svm_msg_q_t *peer_mq;
224 u32 epoll_evt_conn_index; /*< mq evt connection index part of
225 the mqs evtfd epoll (if used) */
226 } vcl_cut_through_registration_t;
228 typedef struct vcl_mq_evt_conn_
234 typedef struct vcl_worker_
236 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
239 vcl_session_t *sessions;
241 /** Worker/thread index in current process */
244 /** Worker index in vpp*/
247 /** API client handle */
250 /** State of the connection, shared between msg RX thread and main thread */
251 volatile app_state_t wrk_state;
253 /** VPP binary api input queue */
254 svm_queue_t *vl_input_queue;
256 /** VPP mq to be used for exchanging control messages */
257 svm_msg_q_t *ctrl_mq;
259 /** Message queues epoll fd. Initialized only if using mqs with eventfds */
262 /** Pool of event message queue event connections */
263 vcl_mq_evt_conn_t *mq_evt_conns;
265 /** Per worker buffer for receiving mq epoll events */
266 struct epoll_event *mq_events;
268 /** Hash table for disconnect processing */
269 uword *session_index_by_vpp_handles;
271 /** Select bitmaps */
272 clib_bitmap_t *rd_bitmap;
273 clib_bitmap_t *wr_bitmap;
274 clib_bitmap_t *ex_bitmap;
276 /** Our event message queue */
277 svm_msg_q_t *app_event_queue;
279 /** VPP workers event message queues */
280 svm_msg_q_t **vpp_event_queues;
282 /** For deadman timers */
283 clib_time_t clib_time;
285 /** Vector acting as buffer for mq messages */
286 svm_msg_q_msg_t *mq_msg_vector;
288 /** Vector of unhandled events */
289 session_event_t *unhandled_evts_vector;
291 u32 *pending_session_wrk_updates;
293 /** Used also as a thread stop key buffer */
296 /** Current pid, may be different from main_pid if forked child */
303 typedef struct vppcom_main_t_
309 /** Main process pid */
312 /** App's index in vpp. It's used by vpp to identify the app */
315 /** State of the connection, shared between msg RX thread and main thread */
316 volatile app_state_t app_state;
320 /** VCL configuration */
323 volatile u32 forking;
326 vcl_worker_t *workers;
328 /** Lock to protect worker registrations */
329 clib_spinlock_t workers_lock;
331 /** Lock to protect segment hash table */
332 clib_rwlock_t segment_table_lock;
334 /** Mapped segments table */
335 uword *segment_table;
337 /** Control mq obtained from attach */
338 svm_msg_q_t *ctrl_mq;
340 fifo_segment_main_t segment_main;
343 /* VPP Event-logger */
344 elog_main_t elog_main;
345 elog_track_t elog_track;
348 /* VNET_API_ERROR_FOO -> "Foo" hash table */
349 uword *error_string_by_error_number;
353 extern vppcom_main_t *vcm;
355 #define VCL_INVALID_SESSION_INDEX ((u32)~0)
356 #define VCL_INVALID_SESSION_HANDLE ((u64)~0)
357 #define VCL_INVALID_SEGMENT_INDEX ((u32)~0)
358 #define VCL_INVALID_SEGMENT_HANDLE ((u64)~0)
360 static inline vcl_session_t *
361 vcl_session_alloc (vcl_worker_t * wrk)
364 pool_get (wrk->sessions, s);
365 memset (s, 0, sizeof (*s));
366 s->session_index = s - wrk->sessions;
367 s->listener_index = VCL_INVALID_SESSION_INDEX;
372 vcl_session_free (vcl_worker_t * wrk, vcl_session_t * s)
374 pool_put (wrk->sessions, s);
377 static inline vcl_session_t *
378 vcl_session_get (vcl_worker_t * wrk, u32 session_index)
380 if (pool_is_free_index (wrk->sessions, session_index))
382 return pool_elt_at_index (wrk->sessions, session_index);
385 static inline vcl_session_handle_t
386 vcl_session_handle_from_index (u32 session_index)
388 ASSERT (session_index < 2 << 24);
389 return (vcl_get_worker_index () << 24 | session_index);
392 static inline vcl_session_handle_t
393 vcl_session_handle (vcl_session_t * s)
395 return vcl_session_handle_from_index (s->session_index);
399 vcl_session_handle_parse (u32 handle, u32 * wrk_index, u32 * session_index)
401 *wrk_index = handle >> 24;
402 *session_index = handle & 0xFFFFFF;
405 static inline vcl_session_t *
406 vcl_session_get_w_handle (vcl_worker_t * wrk, u32 session_handle)
408 u32 session_index, wrk_index;
409 vcl_session_handle_parse (session_handle, &wrk_index, &session_index);
410 ASSERT (wrk_index == wrk->wrk_index);
411 return vcl_session_get (wrk, session_index);
414 static inline vcl_session_t *
415 vcl_session_get_w_vpp_handle (vcl_worker_t * wrk, u64 vpp_handle)
418 if ((p = hash_get (wrk->session_index_by_vpp_handles, vpp_handle)))
419 return vcl_session_get (wrk, (u32) p[0]);
424 vcl_session_index_from_vpp_handle (vcl_worker_t * wrk, u64 vpp_handle)
427 if ((p = hash_get (wrk->session_index_by_vpp_handles, vpp_handle)))
429 return VCL_INVALID_SESSION_INDEX;
433 vcl_session_table_add_vpp_handle (vcl_worker_t * wrk, u64 handle, u32 value)
435 hash_set (wrk->session_index_by_vpp_handles, handle, value);
439 vcl_session_table_del_vpp_handle (vcl_worker_t * wrk, u64 vpp_handle)
441 hash_unset (wrk->session_index_by_vpp_handles, vpp_handle);
444 static inline uword *
445 vcl_session_table_lookup_vpp_handle (vcl_worker_t * wrk, u64 handle)
447 return hash_get (wrk->session_index_by_vpp_handles, handle);
451 vcl_session_table_add_listener (vcl_worker_t * wrk, u64 listener_handle,
454 hash_set (wrk->session_index_by_vpp_handles, listener_handle, value);
458 vcl_session_table_del_listener (vcl_worker_t * wrk, u64 listener_handle)
460 hash_unset (wrk->session_index_by_vpp_handles, listener_handle);
464 vcl_session_is_connectable_listener (vcl_worker_t * wrk,
465 vcl_session_t * session)
467 /* Tell if we session_handle is a QUIC session.
468 * We can be in the following cases :
469 * Listen session <- QUIC session <- Stream session
470 * QUIC session <- Stream session
473 if (session->session_type != VPPCOM_PROTO_QUIC)
475 if (session->listener_index == VCL_INVALID_SESSION_INDEX)
476 return !(session->session_state & STATE_LISTEN);
477 ls = vcl_session_get_w_handle (wrk, session->listener_index);
479 return VPPCOM_EBADFD;
480 return ls->session_state & STATE_LISTEN;
483 static inline vcl_session_t *
484 vcl_session_table_lookup_listener (vcl_worker_t * wrk, u64 handle)
487 vcl_session_t *session;
489 p = hash_get (wrk->session_index_by_vpp_handles, handle);
492 VDBG (0, "could not find listen session: unknown vpp listener handle"
496 session = vcl_session_get (wrk, p[0]);
499 VDBG (1, "invalid listen session index (%u)", p[0]);
503 ASSERT ((session->session_state & (STATE_LISTEN | STATE_LISTEN_NO_MQ)) ||
504 vcl_session_is_connectable_listener (wrk, session));
508 const char *vppcom_session_state_str (vcl_session_state_t state);
511 vcl_session_is_ct (vcl_session_t * s)
513 return (s->ct_tx_fifo != 0);
517 vcl_session_is_open (vcl_session_t * s)
519 return ((s->session_state & STATE_OPEN)
520 || (s->session_state == STATE_LISTEN
521 && s->session_type == VPPCOM_PROTO_UDP));
525 vcl_session_is_closing (vcl_session_t * s)
527 return (s->session_state == STATE_VPP_CLOSING
528 || s->session_state == STATE_DISCONNECT);
532 vcl_session_closing_error (vcl_session_t * s)
534 return s->session_state == STATE_DISCONNECT ? VPPCOM_ECONNRESET : 0;
538 vcl_session_closed_error (vcl_session_t * s)
540 return s->session_state == STATE_DISCONNECT
541 ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN;
547 int vcl_wait_for_app_state_change (app_state_t app_state);
548 vcl_mq_evt_conn_t *vcl_mq_evt_conn_alloc (vcl_worker_t * wrk);
549 u32 vcl_mq_evt_conn_index (vcl_worker_t * wrk, vcl_mq_evt_conn_t * mqc);
550 vcl_mq_evt_conn_t *vcl_mq_evt_conn_get (vcl_worker_t * wrk, u32 mq_conn_idx);
551 int vcl_mq_epoll_add_evfd (vcl_worker_t * wrk, svm_msg_q_t * mq);
552 int vcl_mq_epoll_del_evfd (vcl_worker_t * wrk, u32 mqc_index);
554 vcl_worker_t *vcl_worker_alloc_and_init (void);
555 void vcl_worker_cleanup (vcl_worker_t * wrk, u8 notify_vpp);
556 int vcl_worker_register_with_vpp (void);
557 int vcl_worker_set_bapi (void);
558 svm_msg_q_t *vcl_worker_ctrl_mq (vcl_worker_t * wrk);
560 void vcl_flush_mq_events (void);
561 void vcl_cleanup_bapi (void);
562 int vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session,
563 vcl_session_handle_t sh, u8 do_disconnect);
565 void vcl_segment_table_add (u64 segment_handle, u32 svm_segment_index);
566 u32 vcl_segment_table_lookup (u64 segment_handle);
567 void vcl_segment_table_del (u64 segment_handle);
569 int vcl_session_read_ready (vcl_session_t * session);
570 int vcl_session_write_ready (vcl_session_t * session);
572 static inline vcl_worker_t *
573 vcl_worker_get (u32 wrk_index)
575 return pool_elt_at_index (vcm->workers, wrk_index);
578 static inline vcl_worker_t *
579 vcl_worker_get_if_valid (u32 wrk_index)
581 if (pool_is_free_index (vcm->workers, wrk_index))
583 return pool_elt_at_index (vcm->workers, wrk_index);
586 static inline vcl_worker_t *
587 vcl_worker_get_current (void)
589 return vcl_worker_get (vcl_get_worker_index ());
595 return pool_elts (vcm->workers);
598 static inline svm_msg_q_t *
599 vcl_session_vpp_evt_q (vcl_worker_t * wrk, vcl_session_t * s)
601 return wrk->vpp_event_queues[s->vpp_thread_index];
604 void vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s,
609 int vppcom_connect_to_vpp (char *app_name);
610 void vppcom_disconnect_from_vpp (void);
611 void vppcom_init_error_string_table (void);
612 void vppcom_send_session_enable_disable (u8 is_enable);
613 void vppcom_app_send_attach (void);
614 void vppcom_app_send_detach (void);
615 void vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s);
616 void vppcom_send_disconnect_session (u64 vpp_handle);
617 void vppcom_api_hookup (void);
618 void vppcom_send_application_tls_cert_add (vcl_session_t * session,
619 char *cert, u32 cert_len);
620 void vppcom_send_application_tls_key_add (vcl_session_t * session, char *key,
622 void vcl_send_app_worker_add_del (u8 is_add);
623 void vcl_send_child_worker_del (vcl_worker_t * wrk);
625 u32 vcl_max_nsid_len (void);
627 u8 *format_api_error (u8 * s, va_list * args);
630 #endif /* SRC_VCL_VCL_PRIVATE_H_ */
633 * fd.io coding-style-patch-verification: ON
636 * eval: (c-set-style "gnu")