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,
73 STATE_DETACHED = 0x20,
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
113 session_accepted_msg_t accepted_msg;
120 VCL_SESS_ATTR_SERVER,
121 VCL_SESS_ATTR_CUT_THRU,
123 VCL_SESS_ATTR_VEP_SESSION,
124 VCL_SESS_ATTR_LISTEN, // SOL_SOCKET,SO_ACCEPTCONN
125 VCL_SESS_ATTR_NONBLOCK, // fcntl,O_NONBLOCK
126 VCL_SESS_ATTR_REUSEADDR, // SOL_SOCKET,SO_REUSEADDR
127 VCL_SESS_ATTR_REUSEPORT, // SOL_SOCKET,SO_REUSEPORT
128 VCL_SESS_ATTR_BROADCAST, // SOL_SOCKET,SO_BROADCAST
129 VCL_SESS_ATTR_V6ONLY, // SOL_TCP,IPV6_V6ONLY
130 VCL_SESS_ATTR_KEEPALIVE, // SOL_SOCKET,SO_KEEPALIVE
131 VCL_SESS_ATTR_TCP_NODELAY, // SOL_TCP,TCP_NODELAY
132 VCL_SESS_ATTR_TCP_KEEPIDLE, // SOL_TCP,TCP_KEEPIDLE
133 VCL_SESS_ATTR_TCP_KEEPINTVL, // SOL_TCP,TCP_KEEPINTVL
134 VCL_SESS_ATTR_SHUT_RD,
135 VCL_SESS_ATTR_SHUT_WR,
137 } vppcom_session_attr_t;
139 #define VCL_SESS_ATTR_SET(ATTR, VAL) \
141 (ATTR) |= 1 << (VAL); \
144 #define VCL_SESS_ATTR_CLR(ATTR, VAL) \
146 (ATTR) &= ~(1 << (VAL)); \
149 #define VCL_SESS_ATTR_TEST(ATTR, VAL) \
150 ((ATTR) & (1 << (VAL)) ? 1 : 0)
152 typedef enum vcl_session_flags_
154 VCL_SESSION_F_CONNECTED = 1 << 0,
155 } __clib_packed vcl_session_flags_t;
159 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
160 #define _(type, name) type name;
161 foreach_app_session_field
163 u32 sndbuf_size; // VPP-TBD: Hack until support setsockopt(SO_SNDBUF)
164 u32 rcvbuf_size; // VPP-TBD: Hack until support setsockopt(SO_RCVBUF)
165 u32 user_mss; // VPP-TBD: Hack until support setsockopt(TCP_MAXSEG)
167 u32 vpp_thread_index;
169 svm_fifo_t *ct_rx_fifo;
170 svm_fifo_t *ct_tx_fifo;
172 /* Socket configuration state */
175 vcl_session_flags_t flags;
176 /* VCL session index of the listening session (if any) */
178 /* Accepted sessions on this listener */
179 int n_accepted_sessions;
185 svm_msg_q_t *our_evt_q;
186 vcl_session_msg_t *accept_evts_fifo;
188 elog_track_t elog_track;
192 typedef struct vppcom_cfg_t_
196 u32 vpp_api_q_length;
197 uword segment_baseva;
199 uword add_segment_size;
200 u32 preallocated_fifo_pairs;
203 u32 event_queue_size;
204 u32 listen_queue_size;
205 u8 app_proxy_transport_tcp;
206 u8 app_proxy_transport_udp;
210 u64 namespace_secret;
216 char *event_log_path;
217 u8 *vpp_api_filename;
218 u8 *vpp_api_socket_name;
224 void vppcom_cfg (vppcom_cfg_t * vcl_cfg);
226 typedef struct vcl_cut_through_registration_
229 svm_msg_q_t *peer_mq;
231 u32 epoll_evt_conn_index; /*< mq evt connection index part of
232 the mqs evtfd epoll (if used) */
233 } vcl_cut_through_registration_t;
235 typedef struct vcl_mq_evt_conn_
241 typedef struct vcl_worker_
243 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
246 vcl_session_t *sessions;
248 /** Worker/thread index in current process */
251 /** Worker index in vpp*/
254 /** API client handle */
257 /** State of the connection, shared between msg RX thread and main thread */
258 volatile app_state_t wrk_state;
260 /** VPP binary api input queue */
261 svm_queue_t *vl_input_queue;
263 /** VPP mq to be used for exchanging control messages */
264 svm_msg_q_t *ctrl_mq;
266 /** Message queues epoll fd. Initialized only if using mqs with eventfds */
269 /** Pool of event message queue event connections */
270 vcl_mq_evt_conn_t *mq_evt_conns;
272 /** Per worker buffer for receiving mq epoll events */
273 struct epoll_event *mq_events;
275 /** Hash table for disconnect processing */
276 uword *session_index_by_vpp_handles;
278 /** Select bitmaps */
279 clib_bitmap_t *rd_bitmap;
280 clib_bitmap_t *wr_bitmap;
281 clib_bitmap_t *ex_bitmap;
283 /** Our event message queue */
284 svm_msg_q_t *app_event_queue;
286 /** VPP workers event message queues */
287 svm_msg_q_t **vpp_event_queues;
289 /** For deadman timers */
290 clib_time_t clib_time;
292 /** Vector acting as buffer for mq messages */
293 svm_msg_q_msg_t *mq_msg_vector;
295 /** Vector of unhandled events */
296 session_event_t *unhandled_evts_vector;
298 u32 *pending_session_wrk_updates;
300 /** Used also as a thread stop key buffer */
303 /** Current pid, may be different from main_pid if forked child */
308 socket_client_main_t bapi_sock_ctx;
309 memory_client_main_t bapi_shm_ctx;
310 api_main_t bapi_api_ctx;
312 /** vcl needs next epoll_create to go to libc_epoll */
313 u8 vcl_needs_real_epoll;
314 volatile int rpc_done;
317 typedef void (vcl_rpc_fn_t) (void *args);
319 typedef struct vppcom_main_t_
325 /** Main process pid */
328 /** App's index in vpp. It's used by vpp to identify the app */
331 /** State of the connection, shared between msg RX thread and main thread */
332 volatile app_state_t app_state;
336 /** VCL configuration */
339 volatile u32 forking;
342 vcl_worker_t *workers;
344 /** Lock to protect worker registrations */
345 clib_spinlock_t workers_lock;
347 /** Lock to protect segment hash table */
348 clib_rwlock_t segment_table_lock;
350 /** Mapped segments table */
351 uword *segment_table;
353 /** Control mq obtained from attach */
354 svm_msg_q_t *ctrl_mq;
356 fifo_segment_main_t segment_main;
359 /* VPP Event-logger */
360 elog_main_t elog_main;
361 elog_track_t elog_track;
364 /* VNET_API_ERROR_FOO -> "Foo" hash table */
365 uword *error_string_by_error_number;
367 vcl_rpc_fn_t *wrk_rpc_fn;
371 extern vppcom_main_t *vcm;
372 extern vppcom_main_t _vppcom_main;
374 #define VCL_INVALID_SESSION_INDEX ((u32)~0)
375 #define VCL_INVALID_SESSION_HANDLE ((u64)~0)
376 #define VCL_INVALID_SEGMENT_INDEX ((u32)~0)
377 #define VCL_INVALID_SEGMENT_HANDLE ((u64)~0)
379 static inline vcl_session_t *
380 vcl_session_alloc (vcl_worker_t * wrk)
383 pool_get (wrk->sessions, s);
384 memset (s, 0, sizeof (*s));
385 s->session_index = s - wrk->sessions;
386 s->listener_index = VCL_INVALID_SESSION_INDEX;
391 vcl_session_free (vcl_worker_t * wrk, vcl_session_t * s)
393 /* Debug level set to 1 to avoid debug messages while ldp is cleaning up */
394 VDBG (1, "session %u [0x%llx] removed", s->session_index, s->vpp_handle);
395 pool_put (wrk->sessions, s);
398 static inline vcl_session_t *
399 vcl_session_get (vcl_worker_t * wrk, u32 session_index)
401 if (pool_is_free_index (wrk->sessions, session_index))
403 return pool_elt_at_index (wrk->sessions, session_index);
406 static inline vcl_session_handle_t
407 vcl_session_handle_from_wrk_session_index (u32 session_index, u32 wrk_index)
409 ASSERT (session_index < 2 << 24);
410 return (wrk_index << 24 | session_index);
413 static inline vcl_session_handle_t
414 vcl_session_handle_from_index (u32 session_index)
416 ASSERT (session_index < 2 << 24);
417 return (vcl_get_worker_index () << 24 | session_index);
420 static inline vcl_session_handle_t
421 vcl_session_handle (vcl_session_t * s)
423 return vcl_session_handle_from_index (s->session_index);
427 vcl_session_handle_parse (u32 handle, u32 * wrk_index, u32 * session_index)
429 *wrk_index = handle >> 24;
430 *session_index = handle & 0xFFFFFF;
433 static inline vcl_session_t *
434 vcl_session_get_w_handle (vcl_worker_t * wrk, u32 session_handle)
436 u32 session_index, wrk_index;
437 vcl_session_handle_parse (session_handle, &wrk_index, &session_index);
438 ASSERT (wrk_index == wrk->wrk_index);
439 return vcl_session_get (wrk, session_index);
442 static inline vcl_session_t *
443 vcl_session_get_w_vpp_handle (vcl_worker_t * wrk, u64 vpp_handle)
446 if ((p = hash_get (wrk->session_index_by_vpp_handles, vpp_handle)))
447 return vcl_session_get (wrk, (u32) p[0]);
452 vcl_session_index_from_vpp_handle (vcl_worker_t * wrk, u64 vpp_handle)
455 if ((p = hash_get (wrk->session_index_by_vpp_handles, vpp_handle)))
457 return VCL_INVALID_SESSION_INDEX;
461 vcl_session_table_add_vpp_handle (vcl_worker_t * wrk, u64 handle, u32 value)
463 hash_set (wrk->session_index_by_vpp_handles, handle, value);
467 vcl_session_table_del_vpp_handle (vcl_worker_t * wrk, u64 vpp_handle)
469 hash_unset (wrk->session_index_by_vpp_handles, vpp_handle);
472 static inline uword *
473 vcl_session_table_lookup_vpp_handle (vcl_worker_t * wrk, u64 handle)
475 return hash_get (wrk->session_index_by_vpp_handles, handle);
479 vcl_session_table_add_listener (vcl_worker_t * wrk, u64 listener_handle,
482 hash_set (wrk->session_index_by_vpp_handles, listener_handle, value);
486 vcl_session_table_del_listener (vcl_worker_t * wrk, u64 listener_handle)
488 hash_unset (wrk->session_index_by_vpp_handles, listener_handle);
492 vcl_session_is_connectable_listener (vcl_worker_t * wrk,
493 vcl_session_t * session)
495 /* Tell if we session_handle is a QUIC session.
496 * We can be in the following cases :
497 * Listen session <- QUIC session <- Stream session
498 * QUIC session <- Stream session
501 if (session->session_type != VPPCOM_PROTO_QUIC)
503 if (session->listener_index == VCL_INVALID_SESSION_INDEX)
504 return !(session->session_state & STATE_LISTEN);
505 ls = vcl_session_get_w_handle (wrk, session->listener_index);
507 return VPPCOM_EBADFD;
508 return ls->session_state & STATE_LISTEN;
511 static inline vcl_session_t *
512 vcl_session_table_lookup_listener (vcl_worker_t * wrk, u64 handle)
515 vcl_session_t *session;
517 p = hash_get (wrk->session_index_by_vpp_handles, handle);
520 VDBG (0, "could not find listen session: unknown vpp listener handle"
524 session = vcl_session_get (wrk, p[0]);
527 VDBG (1, "invalid listen session index (%u)", p[0]);
531 ASSERT ((session->session_state & (STATE_LISTEN | STATE_LISTEN_NO_MQ)) ||
532 vcl_session_is_connectable_listener (wrk, session));
536 const char *vppcom_session_state_str (vcl_session_state_t state);
539 vcl_session_is_ct (vcl_session_t * s)
541 return (s->ct_tx_fifo != 0);
545 vcl_session_is_cl (vcl_session_t * s)
547 if (s->session_type == VPPCOM_PROTO_UDP)
548 return !(s->flags & VCL_SESSION_F_CONNECTED);
553 vcl_session_is_open (vcl_session_t * s)
555 return ((s->session_state & STATE_OPEN)
556 || (s->session_state == STATE_LISTEN
557 && s->session_type == VPPCOM_PROTO_UDP));
561 vcl_session_is_closing (vcl_session_t * s)
563 return (s->session_state == STATE_VPP_CLOSING
564 || s->session_state == STATE_DISCONNECT);
568 vcl_session_is_closed (vcl_session_t * s)
570 return (!s || (s->session_state == STATE_CLOSED));
574 vcl_session_closing_error (vcl_session_t * s)
576 /* Return 0 on closing sockets */
577 return s->session_state == STATE_DISCONNECT ? VPPCOM_ECONNRESET : 0;
581 vcl_session_closed_error (vcl_session_t * s)
583 return s->session_state == STATE_DISCONNECT
584 ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN;
588 vcl_ip_copy_from_ep (ip46_address_t * ip, vppcom_endpt_t * ep)
591 clib_memcpy_fast (&ip->ip4, ep->ip, sizeof (ip4_address_t));
593 clib_memcpy_fast (&ip->ip6, ep->ip, sizeof (ip6_address_t));
597 vcl_ip_copy_to_ep (ip46_address_t * ip, vppcom_endpt_t * ep, u8 is_ip4)
601 clib_memcpy_fast (ep->ip, &ip->ip4, sizeof (ip4_address_t));
603 clib_memcpy_fast (ep->ip, &ip->ip6, sizeof (ip6_address_t));
607 vcl_proto_is_dgram (uint8_t proto)
609 return proto == VPPCOM_PROTO_UDP;
615 int vcl_wait_for_app_state_change (app_state_t app_state);
616 vcl_mq_evt_conn_t *vcl_mq_evt_conn_alloc (vcl_worker_t * wrk);
617 u32 vcl_mq_evt_conn_index (vcl_worker_t * wrk, vcl_mq_evt_conn_t * mqc);
618 vcl_mq_evt_conn_t *vcl_mq_evt_conn_get (vcl_worker_t * wrk, u32 mq_conn_idx);
619 int vcl_mq_epoll_add_evfd (vcl_worker_t * wrk, svm_msg_q_t * mq);
620 int vcl_mq_epoll_del_evfd (vcl_worker_t * wrk, u32 mqc_index);
622 vcl_worker_t *vcl_worker_alloc_and_init (void);
623 void vcl_worker_cleanup (vcl_worker_t * wrk, u8 notify_vpp);
624 int vcl_worker_register_with_vpp (void);
625 int vcl_worker_set_bapi (void);
626 svm_msg_q_t *vcl_worker_ctrl_mq (vcl_worker_t * wrk);
628 void vcl_flush_mq_events (void);
629 void vcl_cleanup_bapi (void);
630 int vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session,
631 vcl_session_handle_t sh, u8 do_disconnect);
633 void vcl_segment_table_add (u64 segment_handle, u32 svm_segment_index);
634 u32 vcl_segment_table_lookup (u64 segment_handle);
635 void vcl_segment_table_del (u64 segment_handle);
637 int vcl_session_read_ready (vcl_session_t * session);
638 int vcl_session_write_ready (vcl_session_t * session);
640 static inline vcl_worker_t *
641 vcl_worker_get (u32 wrk_index)
643 return pool_elt_at_index (vcm->workers, wrk_index);
646 static inline vcl_worker_t *
647 vcl_worker_get_if_valid (u32 wrk_index)
649 if (pool_is_free_index (vcm->workers, wrk_index))
651 return pool_elt_at_index (vcm->workers, wrk_index);
654 static inline vcl_worker_t *
655 vcl_worker_get_current (void)
657 return vcl_worker_get (vcl_get_worker_index ());
663 return pool_elts (vcm->workers);
666 static inline svm_msg_q_t *
667 vcl_session_vpp_evt_q (vcl_worker_t * wrk, vcl_session_t * s)
669 return wrk->vpp_event_queues[s->vpp_thread_index];
672 void vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s,
674 int vcl_send_worker_rpc (u32 dst_wrk_index, void *data, u32 data_len);
679 int vppcom_connect_to_vpp (const char *app_name);
680 void vppcom_disconnect_from_vpp (void);
681 void vppcom_init_error_string_table (void);
682 void vppcom_send_session_enable_disable (u8 is_enable);
683 void vppcom_app_send_attach (void);
684 void vppcom_app_send_detach (void);
685 void vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s);
686 void vppcom_send_disconnect_session (u64 vpp_handle);
687 void vppcom_api_hookup (void);
688 void vppcom_send_application_tls_cert_add (vcl_session_t * session,
689 char *cert, u32 cert_len);
690 void vppcom_send_application_tls_key_add (vcl_session_t * session, char *key,
692 void vcl_send_app_worker_add_del (u8 is_add);
693 void vcl_send_child_worker_del (vcl_worker_t * wrk);
695 int vcl_segment_attach (u64 segment_handle, char *name,
696 ssvm_segment_type_t type, int fd);
697 void vcl_segment_detach (u64 segment_handle);
699 u32 vcl_max_nsid_len (void);
702 #endif /* SRC_VCL_VCL_PRIVATE_H_ */
705 * fd.io coding-style-patch-verification: ON
708 * eval: (c-set-style "gnu")