2 *------------------------------------------------------------------
3 * Copyright (c) 2017 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
21 #include <sys/types.h>
23 #include <sys/ioctl.h>
24 #include <sys/socket.h>
28 #include <sys/prctl.h>
34 #include <linux/icmp.h>
35 #include <arpa/inet.h>
37 #include <netinet/if_ether.h>
38 #include <net/if_arp.h>
39 #include <asm/byteorder.h>
44 #include <sys/eventfd.h>
45 #include <sys/timerfd.h>
46 #include <sys/epoll.h>
48 #include <linux/memfd.h>
50 /* memif protocol msg, ring and descriptor definitions */
54 /* socket messaging functions */
56 /* private structs and functions */
57 #include <memif_private.h>
59 #define ERRLIST_LEN 40
60 #define MAX_ERRBUF_LEN 256
63 #define MEMIF_MEMORY_BARRIER() __builtin_ia32_sfence ()
65 #define MEMIF_MEMORY_BARRIER() __sync_synchronize ()
66 #endif /* __x86_x64__ */
68 libmemif_main_t libmemif_main;
70 static char memif_buf[MAX_ERRBUF_LEN];
72 const char *memif_errlist[ERRLIST_LEN] = { /* MEMIF_ERR_SUCCESS */
74 /* MEMIF_ERR_SYSCALL */
75 "Unspecified syscall error (build with -DMEMIF_DBG or make debug).",
76 /* MEMIF_ERR_CONNREFUSED */
79 "Permission to resoure denied.",
80 /* MEMIF_ERR_NO_FILE */
81 "Socket file does not exist",
82 /* MEMIF_ERR_FILE_LIMIT */
83 "System limit on total numer of open files reached.",
84 /* MEMIF_ERR_PROC_FILE_LIMIT */
85 "Per-process limit on total number of open files reached.",
86 /* MEMIF_ERR_ALREADY */
87 "Connection already requested.",
89 "File descriptor refers to file other than socket, or operation would block.",
90 /* MEMIF_ERR_BAD_FD */
91 "Bad file descriptor.",
94 /* MEMIF_ERR_INVAL_ARG */
96 /* MEMIF_ERR_NOCONN */
97 "Memif connection handle does not point to existing conenction",
99 "Memif connection handle points to existing connection",
100 /* MEMIF_ERR_CB_FDUPDATE */
101 "Callback memif_control_fd_update_t returned error",
102 /* MEMIF_ERR_FILE_NOT_SOCK */
103 "File specified by socket filename exists and is not socket.",
104 /* MEMIF_ERR_NO_SHMFD */
105 "Missing shared memory file descriptor. (internal error)",
106 /* MEMIF_ERR_COOKIE */
107 "Invalid cookie on ring. (internal error)",
108 /* MEMIF_ERR_NOBUF_RING */
110 /* MEMIF_ERR_NOBUF */
111 "Not enough memif buffers. There are unreceived data in shared memory.",
112 /* MEMIF_ERR_NOBUF_DET */
113 "Not enough space for memif details in suplied buffer. String data might be malformed.",
114 /* MEMIF_ERR_INT_WRITE */
115 "Send interrupt error.",
116 /* MEMIF_ERR_MFMSG */
117 "Malformed message received on control channel.",
120 /* MEMIF_ERR_PROTO */
121 "Incompatible memory interface protocol version.",
123 "Unmatched interface id.",
124 /* MEMIF_ERR_ACCSLAVE */
125 "Slave cannot accept connection reqest.",
126 /* MEMIF_ERR_ALRCONN */
127 "Interface is already connected.",
130 /* MEMIF_ERR_SECRET */
132 /* MEMIF_ERR_NOSECRET */
134 /* MEMIF_ERR_MAXREG */
135 "Limit on total number of regions reached.",
136 /* MEMIF_ERR_MAXRING */
137 "Limit on total number of ring reached.",
138 /* MEMIF_ERR_NO_INTFD */
139 "Missing interrupt file descriptor. (internal error)",
140 /* MEMIF_ERR_DISCONNECT */
141 "Interface received disconnect request.",
142 /* MEMIF_ERR_DISCONNECTED */
143 "Interface is disconnected.",
144 /* MEMIF_ERR_UNKNOWN_MSG */
145 "Unknown message type received on control channel. (internal error)",
146 /* MEMIF_ERR_POLL_CANCEL */
147 "Memif event polling was canceled.",
148 /* MEMIF_ERR_MAX_RING */
149 "Maximum log2 ring size is 15",
150 /* MEMIF_ERR_PRIVHDR */
151 "Private headers not supported."
154 #define MEMIF_ERR_UNDEFINED "undefined error"
157 memif_strerror (int err_code)
159 if (err_code >= ERRLIST_LEN)
161 strncpy (memif_buf, MEMIF_ERR_UNDEFINED, strlen (MEMIF_ERR_UNDEFINED));
162 memif_buf[strlen (MEMIF_ERR_UNDEFINED)] = '\0';
166 strncpy (memif_buf, memif_errlist[err_code],
167 strlen (memif_errlist[err_code]));
168 memif_buf[strlen (memif_errlist[err_code])] = '\0';
176 return MEMIF_VERSION;
179 #define DBG_TX_BUF (0)
180 #define DBG_RX_BUF (1)
184 print_bytes (void *data, uint16_t len, uint8_t q)
187 printf ("\nTX:\n\t");
189 printf ("\nRX:\n\t");
191 for (i = 0; i < len; i++)
194 printf ("\n%d:\t", i);
195 printf ("%02X ", ((uint8_t *) (data))[i]);
199 #endif /* MEMIF_DBG_SHM */
202 memif_syscall_error_handler (int err_code)
204 DBG ("%s", strerror (err_code));
207 return MEMIF_ERR_SUCCESS;
208 if (err_code == EACCES)
209 return MEMIF_ERR_ACCES;
210 if (err_code == ENFILE)
211 return MEMIF_ERR_FILE_LIMIT;
212 if (err_code == EMFILE)
213 return MEMIF_ERR_PROC_FILE_LIMIT;
214 if (err_code == ENOMEM)
215 return MEMIF_ERR_NOMEM;
216 /* connection refused if master does not exist
217 this error would spam the user until master was created */
219 if (err_code == ECONNREFUSED)
220 return MEMIF_ERR_SUCCESS;
222 if (err_code == ECONNREFUSED)
223 return MEMIF_ERR_CONNREFUSED;
224 if (err_code == EALREADY)
225 return MEMIF_ERR_ALREADY;
226 if (err_code == EAGAIN)
227 return MEMIF_ERR_AGAIN;
228 if (err_code == EBADF)
229 return MEMIF_ERR_BAD_FD;
230 if (err_code == ENOENT)
231 return MEMIF_ERR_NO_FILE;
233 /* other syscall errors */
234 return MEMIF_ERR_SYSCALL;
239 get_libmemif_main (memif_socket_t * ms)
241 if (ms != NULL && ms->lm != NULL)
243 return &libmemif_main;
247 memif_add_epoll_fd (libmemif_main_t * lm, int fd, uint32_t events)
251 DBG ("invalid fd %d", fd);
254 struct epoll_event evt;
255 memset (&evt, 0, sizeof (evt));
258 if (epoll_ctl (lm->epfd, EPOLL_CTL_ADD, fd, &evt) < 0)
260 DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
263 DBG ("fd %d added to epoll", fd);
268 memif_mod_epoll_fd (libmemif_main_t * lm, int fd, uint32_t events)
272 DBG ("invalid fd %d", fd);
275 struct epoll_event evt;
276 memset (&evt, 0, sizeof (evt));
279 if (epoll_ctl (lm->epfd, EPOLL_CTL_MOD, fd, &evt) < 0)
281 DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
284 DBG ("fd %d moddified on epoll", fd);
289 memif_del_epoll_fd (libmemif_main_t * lm, int fd)
293 DBG ("invalid fd %d", fd);
296 struct epoll_event evt;
297 memset (&evt, 0, sizeof (evt));
298 if (epoll_ctl (lm->epfd, EPOLL_CTL_DEL, fd, &evt) < 0)
300 DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
303 DBG ("fd %d removed from epoll", fd);
308 memif_control_fd_update (int fd, uint8_t events, void *private_ctx)
312 if (private_ctx == NULL)
313 return MEMIF_ERR_INVAL_ARG;
315 lm = (libmemif_main_t *) private_ctx;
317 if (events & MEMIF_FD_EVENT_DEL)
318 return memif_del_epoll_fd (lm, fd);
321 if (events & MEMIF_FD_EVENT_READ)
323 if (events & MEMIF_FD_EVENT_WRITE)
326 if (events & MEMIF_FD_EVENT_MOD)
327 return memif_mod_epoll_fd (lm, fd, evt);
329 return memif_add_epoll_fd (lm, fd, evt);
333 add_list_elt (libmemif_main_t * lm, memif_list_elt_t * e,
334 memif_list_elt_t ** list, uint16_t * len)
336 memif_list_elt_t *tmp;
339 for (i = 0; i < *len; i++)
341 if ((*list)[i].data_struct == NULL)
343 (*list)[i].key = e->key;
344 (*list)[i].data_struct = e->data_struct;
349 tmp = lm->realloc (*list, sizeof (memif_list_elt_t) * *len * 2);
353 for (i = *len; i < *len * 2; i++)
356 tmp[i].data_struct = NULL;
359 tmp[*len].key = e->key;
360 tmp[*len].data_struct = e->data_struct;
369 get_list_elt (memif_list_elt_t ** e, memif_list_elt_t * list, uint16_t len,
379 for (i = 0; i < len; i++)
381 if (list[i].key == key)
391 /* does not free memory, only marks element as free */
393 free_list_elt (memif_list_elt_t * list, uint16_t len, int key)
396 for (i = 0; i < len; i++)
398 if (list[i].key == key)
401 list[i].data_struct = NULL;
410 free_list_elt_ctx (memif_list_elt_t * list, uint16_t len,
411 memif_connection_t * ctx)
414 for (i = 0; i < len; i++)
416 if (list[i].key == -1)
418 if (list[i].data_struct == ctx)
420 list[i].data_struct = NULL;
430 memif_control_fd_update_register (libmemif_main_t * lm,
431 memif_control_fd_update_t * cb)
433 lm->control_fd_update = cb;
437 memif_register_external_region (memif_add_external_region_t * ar,
438 memif_get_external_region_addr_t * gr,
439 memif_del_external_region_t * dr,
440 memif_get_external_buffer_offset_t * go)
442 libmemif_main_t *lm = &libmemif_main;
443 lm->add_external_region = ar;
444 lm->get_external_region_addr = gr;
445 lm->del_external_region = dr;
446 lm->get_external_buffer_offset = go;
450 memif_alloc_register (libmemif_main_t * lm, memif_alloc_t * ma)
456 memif_realloc_register (libmemif_main_t * lm, memif_realloc_t * mr)
462 memif_free_register (libmemif_main_t * lm, memif_free_t * mf)
468 memif_set_connection_request_timer (struct itimerspec timer)
470 libmemif_main_t *lm = &libmemif_main;
471 int err = MEMIF_ERR_SUCCESS;
475 /* overwrite timer, if already armed */
476 if (lm->disconn_slaves != 0)
478 if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0)
480 err = memif_syscall_error_handler (errno);
487 memif_per_thread_set_connection_request_timer (memif_per_thread_main_handle_t
489 struct itimerspec timer)
491 libmemif_main_t *lm = (libmemif_main_t *) pt_main;
492 int err = MEMIF_ERR_SUCCESS;
496 /* overwrite timer, if already armed */
497 if (lm->disconn_slaves != 0)
499 if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0)
501 err = memif_syscall_error_handler (errno);
508 memif_init (memif_control_fd_update_t * on_control_fd_update, char *app_name,
509 memif_alloc_t * memif_alloc, memif_realloc_t * memif_realloc,
510 memif_free_t * memif_free)
512 int err = MEMIF_ERR_SUCCESS; /* 0 */
513 libmemif_main_t *lm = &libmemif_main;
514 memset (lm, 0, sizeof (libmemif_main_t));
516 /* register custom memory management */
517 if (memif_alloc != NULL)
519 memif_alloc_register (lm, memif_alloc);
522 memif_alloc_register (lm, malloc);
524 if (memif_realloc != NULL)
526 memif_realloc_register (lm, memif_realloc);
529 memif_realloc_register (lm, realloc);
531 if (memif_free != NULL)
532 memif_free_register (lm, memif_free);
534 memif_free_register (lm, free);
536 if (app_name != NULL)
538 uint8_t len = (strlen (app_name) > MEMIF_NAME_LEN)
539 ? strlen (app_name) : MEMIF_NAME_LEN;
540 strncpy ((char *) lm->app_name, app_name, len);
544 strncpy ((char *) lm->app_name, MEMIF_DEFAULT_APP_NAME,
545 strlen (MEMIF_DEFAULT_APP_NAME));
548 lm->poll_cancel_fd = -1;
549 /* register control fd update callback */
550 if (on_control_fd_update != NULL)
551 memif_control_fd_update_register (lm, on_control_fd_update);
554 lm->epfd = epoll_create (1);
555 memif_control_fd_update_register (lm, memif_control_fd_update);
556 if ((lm->poll_cancel_fd = eventfd (0, EFD_NONBLOCK)) < 0)
559 DBG ("eventfd: %s", strerror (err));
560 return memif_syscall_error_handler (err);
562 lm->control_fd_update (lm->poll_cancel_fd, MEMIF_FD_EVENT_READ, NULL);
563 DBG ("libmemif event polling initialized");
566 lm->control_list_len = 2;
567 lm->interrupt_list_len = 2;
568 lm->socket_list_len = 1;
569 lm->pending_list_len = 1;
572 lm->alloc (sizeof (memif_list_elt_t) * lm->control_list_len);
573 if (lm->control_list == NULL)
575 err = MEMIF_ERR_NOMEM;
579 lm->alloc (sizeof (memif_list_elt_t) * lm->interrupt_list_len);
580 if (lm->interrupt_list == NULL)
582 err = MEMIF_ERR_NOMEM;
586 lm->alloc (sizeof (memif_list_elt_t) * lm->socket_list_len);
587 if (lm->socket_list == NULL)
589 err = MEMIF_ERR_NOMEM;
593 lm->alloc (sizeof (memif_list_elt_t) * lm->pending_list_len);
594 if (lm->pending_list == NULL)
596 err = MEMIF_ERR_NOMEM;
601 for (i = 0; i < lm->control_list_len; i++)
603 lm->control_list[i].key = -1;
604 lm->control_list[i].data_struct = NULL;
606 for (i = 0; i < lm->interrupt_list_len; i++)
608 lm->interrupt_list[i].key = -1;
609 lm->interrupt_list[i].data_struct = NULL;
611 for (i = 0; i < lm->socket_list_len; i++)
613 lm->socket_list[i].key = -1;
614 lm->socket_list[i].data_struct = NULL;
616 for (i = 0; i < lm->pending_list_len; i++)
618 lm->pending_list[i].key = -1;
619 lm->pending_list[i].data_struct = NULL;
622 lm->disconn_slaves = 0;
624 lm->timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK);
627 err = memif_syscall_error_handler (errno);
631 lm->arm.it_value.tv_sec = MEMIF_DEFAULT_RECONNECT_PERIOD_SEC;
632 lm->arm.it_value.tv_nsec = MEMIF_DEFAULT_RECONNECT_PERIOD_NSEC;
633 lm->arm.it_interval.tv_sec = MEMIF_DEFAULT_RECONNECT_PERIOD_SEC;
634 lm->arm.it_interval.tv_nsec = MEMIF_DEFAULT_RECONNECT_PERIOD_NSEC;
636 if (lm->control_fd_update (lm->timerfd, MEMIF_FD_EVENT_READ, NULL) < 0)
638 DBG ("callback type memif_control_fd_update_t error!");
639 err = MEMIF_ERR_CB_FDUPDATE;
643 /* Create default socket */
644 err = memif_create_socket ((memif_socket_handle_t *) &
646 MEMIF_DEFAULT_SOCKET_PATH, NULL);
647 if (err != MEMIF_ERR_SUCCESS)
658 memif_per_thread_init (memif_per_thread_main_handle_t * pt_main,
660 memif_control_fd_update_t * on_control_fd_update,
661 char *app_name, memif_alloc_t * memif_alloc,
662 memif_realloc_t * memif_realloc,
663 memif_free_t * memif_free)
665 memif_err_t err = MEMIF_ERR_SUCCESS;
669 /* Allocate unique libmemif main */
670 if (memif_alloc != NULL)
671 lm = memif_alloc (sizeof (libmemif_main_t));
673 lm = malloc (sizeof (libmemif_main_t));
676 return MEMIF_ERR_NOMEM;
678 memset (lm, 0, sizeof (libmemif_main_t));
680 /* register custom memory management */
681 if (memif_alloc != NULL)
683 memif_alloc_register (lm, memif_alloc);
686 memif_alloc_register (lm, malloc);
688 if (memif_realloc != NULL)
690 memif_realloc_register (lm, memif_realloc);
693 memif_realloc_register (lm, realloc);
695 if (memif_free != NULL)
696 memif_free_register (lm, memif_free);
698 memif_free_register (lm, free);
700 lm->private_ctx = private_ctx;
703 if (app_name != NULL)
705 uint8_t len = (strlen (app_name) > MEMIF_NAME_LEN)
706 ? strlen (app_name) : MEMIF_NAME_LEN;
707 strncpy ((char *) lm->app_name, app_name, len);
711 strncpy ((char *) lm->app_name, MEMIF_DEFAULT_APP_NAME,
712 strlen (MEMIF_DEFAULT_APP_NAME));
715 lm->poll_cancel_fd = -1;
716 /* register control fd update callback */
717 if (on_control_fd_update != NULL)
718 memif_control_fd_update_register (lm, on_control_fd_update);
721 lm->epfd = epoll_create (1);
722 memif_control_fd_update_register (lm, memif_control_fd_update);
723 if ((lm->poll_cancel_fd = eventfd (0, EFD_NONBLOCK)) < 0)
726 DBG ("eventfd: %s", strerror (err));
727 return memif_syscall_error_handler (err);
729 lm->control_fd_update (lm->poll_cancel_fd, MEMIF_FD_EVENT_READ,
731 DBG ("libmemif event polling initialized");
734 /* Initialize lists */
735 lm->control_list_len = 2;
736 lm->interrupt_list_len = 2;
737 lm->socket_list_len = 1;
738 lm->pending_list_len = 1;
741 lm->alloc (sizeof (memif_list_elt_t) * lm->control_list_len);
742 if (lm->control_list == NULL)
744 err = MEMIF_ERR_NOMEM;
748 lm->alloc (sizeof (memif_list_elt_t) * lm->interrupt_list_len);
749 if (lm->interrupt_list == NULL)
751 err = MEMIF_ERR_NOMEM;
755 lm->alloc (sizeof (memif_list_elt_t) * lm->socket_list_len);
756 if (lm->socket_list == NULL)
758 err = MEMIF_ERR_NOMEM;
762 lm->alloc (sizeof (memif_list_elt_t) * lm->pending_list_len);
763 if (lm->pending_list == NULL)
765 err = MEMIF_ERR_NOMEM;
769 for (i = 0; i < lm->control_list_len; i++)
771 lm->control_list[i].key = -1;
772 lm->control_list[i].data_struct = NULL;
774 for (i = 0; i < lm->interrupt_list_len; i++)
776 lm->interrupt_list[i].key = -1;
777 lm->interrupt_list[i].data_struct = NULL;
779 for (i = 0; i < lm->socket_list_len; i++)
781 lm->socket_list[i].key = -1;
782 lm->socket_list[i].data_struct = NULL;
784 for (i = 0; i < lm->pending_list_len; i++)
786 lm->pending_list[i].key = -1;
787 lm->pending_list[i].data_struct = NULL;
790 /* Initialize autoconnect */
791 lm->disconn_slaves = 0;
793 lm->timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK);
796 err = memif_syscall_error_handler (errno);
800 lm->arm.it_value.tv_sec = MEMIF_DEFAULT_RECONNECT_PERIOD_SEC;
801 lm->arm.it_value.tv_nsec = MEMIF_DEFAULT_RECONNECT_PERIOD_NSEC;
802 lm->arm.it_interval.tv_sec = MEMIF_DEFAULT_RECONNECT_PERIOD_SEC;
803 lm->arm.it_interval.tv_nsec = MEMIF_DEFAULT_RECONNECT_PERIOD_NSEC;
805 if (lm->control_fd_update (lm->timerfd, MEMIF_FD_EVENT_READ,
806 lm->private_ctx) < 0)
808 DBG ("callback type memif_control_fd_update_t error!");
809 err = MEMIF_ERR_CB_FDUPDATE;
819 memif_per_thread_cleanup (pt_main);
823 static inline memif_ring_t *
824 memif_get_ring (memif_connection_t * conn, memif_ring_type_t type,
827 if (&conn->regions[0] == NULL)
829 void *p = conn->regions[0].addr;
831 sizeof (memif_ring_t) +
832 sizeof (memif_desc_t) * (1 << conn->run_args.log2_ring_size);
833 p += (ring_num + type * conn->run_args.num_s2m_rings) * ring_size;
835 return (memif_ring_t *) p;
839 memif_set_rx_mode (memif_conn_handle_t c, memif_rx_mode_t rx_mode,
842 memif_connection_t *conn = (memif_connection_t *) c;
844 return MEMIF_ERR_NOCONN;
846 (conn->args.is_master) ? conn->run_args.num_s2m_rings : conn->
847 run_args.num_m2s_rings;
849 return MEMIF_ERR_QID;
851 conn->rx_queues[qid].ring->flags = rx_mode;
852 DBG ("rx_mode flag: %u", conn->rx_queues[qid].ring->flags);
853 return MEMIF_ERR_SUCCESS;
857 memif_socket_start_listening (memif_socket_t * ms)
859 libmemif_main_t *lm = get_libmemif_main (ms);
860 memif_list_elt_t elt;
861 struct stat file_stat;
862 struct sockaddr_un un = { 0 };
864 int err = MEMIF_ERR_SUCCESS;
866 if (ms->type == MEMIF_SOCKET_TYPE_CLIENT)
867 return MEMIF_ERR_INVAL_ARG;
869 /* check if file exists */
870 if (stat ((char *) ms->filename, &file_stat) == 0)
872 if (S_ISSOCK (file_stat.st_mode))
873 unlink ((char *) ms->filename);
875 return memif_syscall_error_handler (errno);
878 ms->fd = socket (AF_UNIX, SOCK_SEQPACKET, 0);
881 err = memif_syscall_error_handler (errno);
885 DBG ("socket %d created", ms->fd);
886 un.sun_family = AF_UNIX;
887 strncpy ((char *) un.sun_path, (char *) ms->filename,
888 sizeof (un.sun_path) - 1);
889 if (setsockopt (ms->fd, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on)) < 0)
891 err = memif_syscall_error_handler (errno);
894 if (bind (ms->fd, (struct sockaddr *) &un, sizeof (un)) < 0)
896 err = memif_syscall_error_handler (errno);
899 if (listen (ms->fd, 1) < 0)
901 err = memif_syscall_error_handler (errno);
904 if (stat ((char *) ms->filename, &file_stat) < 0)
906 err = memif_syscall_error_handler (errno);
910 /* add socket to libmemif main */
912 elt.data_struct = ms;
913 add_list_elt (lm, &elt, &lm->socket_list, &lm->socket_list_len);
914 lm->control_fd_update (ms->fd, MEMIF_FD_EVENT_READ, ms->private_ctx);
916 ms->type = MEMIF_SOCKET_TYPE_LISTENER;
930 memif_create_socket (memif_socket_handle_t * sock, const char *filename,
933 libmemif_main_t *lm = &libmemif_main;
934 memif_socket_t *ms = (memif_socket_t *) * sock;
935 int i, err = MEMIF_ERR_SUCCESS;
937 for (i = 0; i < lm->socket_list_len; i++)
939 if ((ms = (memif_socket_t *) lm->socket_list[i].data_struct) != NULL)
941 if (strncmp ((char *) ms->filename, filename,
942 strlen ((char *) ms->filename)) == 0)
943 return MEMIF_ERR_INVAL_ARG;
947 /* allocate memif_socket_t */
949 ms = lm->alloc (sizeof (memif_socket_t));
952 err = MEMIF_ERR_NOMEM;
955 memset (ms, 0, sizeof (memif_socket_t));
957 ms->filename = lm->alloc (strlen (filename) + sizeof (char));
958 if (ms->filename == NULL)
960 err = MEMIF_ERR_NOMEM;
963 memset (ms->filename, 0, strlen (filename) + sizeof (char));
964 strncpy ((char *) ms->filename, filename, strlen (filename));
966 ms->type = MEMIF_SOCKET_TYPE_NONE;
968 ms->interface_list_len = 1;
970 lm->alloc (sizeof (memif_list_elt_t) * ms->interface_list_len);
971 if (ms->interface_list == NULL)
973 err = MEMIF_ERR_NOMEM;
976 ms->interface_list[0].key = -1;
977 ms->interface_list[0].data_struct = NULL;
986 if (ms->filename != NULL)
988 lm->free (ms->filename);
996 if (ms->interface_list != NULL)
998 lm->free (ms->interface_list);
999 ms->interface_list = NULL;
1000 ms->interface_list_len = 0;
1009 memif_per_thread_create_socket (memif_per_thread_main_handle_t pt_main,
1010 memif_socket_handle_t * sock,
1011 const char *filename, void *private_ctx)
1013 libmemif_main_t *lm = (libmemif_main_t *) pt_main;
1014 memif_socket_t *ms = (memif_socket_t *) * sock;
1015 int i, err = MEMIF_ERR_SUCCESS;
1018 return MEMIF_ERR_INVAL_ARG;
1020 for (i = 0; i < lm->socket_list_len; i++)
1022 if ((ms = (memif_socket_t *) lm->socket_list[i].data_struct) != NULL)
1024 if (strncmp ((char *) ms->filename, filename,
1025 strlen ((char *) ms->filename)) == 0)
1026 return MEMIF_ERR_INVAL_ARG;
1030 /* allocate memif_socket_t */
1032 ms = lm->alloc (sizeof (memif_socket_t));
1035 err = MEMIF_ERR_NOMEM;
1038 memset (ms, 0, sizeof (memif_socket_t));
1041 ms->filename = lm->alloc (strlen (filename) + sizeof (char));
1042 if (ms->filename == NULL)
1044 err = MEMIF_ERR_NOMEM;
1047 memset (ms->filename, 0, strlen (filename) + sizeof (char));
1048 strncpy ((char *) ms->filename, filename, strlen (filename));
1050 ms->type = MEMIF_SOCKET_TYPE_NONE;
1052 ms->interface_list_len = 1;
1053 ms->interface_list =
1054 lm->alloc (sizeof (memif_list_elt_t) * ms->interface_list_len);
1055 if (ms->interface_list == NULL)
1057 err = MEMIF_ERR_NOMEM;
1060 ms->interface_list[0].key = -1;
1061 ms->interface_list[0].data_struct = NULL;
1070 if (ms->filename != NULL)
1072 lm->free (ms->filename);
1073 ms->filename = NULL;
1080 if (ms->interface_list != NULL)
1082 lm->free (ms->interface_list);
1083 ms->interface_list = NULL;
1084 ms->interface_list_len = 0;
1093 memif_create (memif_conn_handle_t * c, memif_conn_args_t * args,
1094 memif_connection_update_t * on_connect,
1095 memif_connection_update_t * on_disconnect,
1096 memif_interrupt_t * on_interrupt, void *private_ctx)
1098 libmemif_main_t *lm = get_libmemif_main (args->socket);
1100 memif_list_elt_t elt;
1101 memif_connection_t *conn = (memif_connection_t *) * c;
1106 DBG ("This handle already points to existing memif.");
1107 return MEMIF_ERR_CONN;
1110 conn = (memif_connection_t *) lm->alloc (sizeof (memif_connection_t));
1113 err = MEMIF_ERR_NOMEM;
1116 memset (conn, 0, sizeof (memif_connection_t));
1118 conn->args.interface_id = args->interface_id;
1120 if (args->log2_ring_size == 0)
1121 args->log2_ring_size = MEMIF_DEFAULT_LOG2_RING_SIZE;
1122 else if (args->log2_ring_size > MEMIF_MAX_LOG2_RING_SIZE)
1124 err = MEMIF_ERR_MAX_RING;
1127 if (args->buffer_size == 0)
1128 args->buffer_size = MEMIF_DEFAULT_BUFFER_SIZE;
1129 if (args->num_s2m_rings == 0)
1130 args->num_s2m_rings = MEMIF_DEFAULT_TX_QUEUES;
1131 if (args->num_m2s_rings == 0)
1132 args->num_m2s_rings = MEMIF_DEFAULT_RX_QUEUES;
1134 conn->args.num_s2m_rings = args->num_s2m_rings;
1135 conn->args.num_m2s_rings = args->num_m2s_rings;
1136 conn->args.buffer_size = args->buffer_size;
1137 conn->args.log2_ring_size = args->log2_ring_size;
1138 conn->args.is_master = args->is_master;
1139 conn->args.mode = args->mode;
1140 conn->msg_queue = NULL;
1141 conn->regions = NULL;
1142 conn->tx_queues = NULL;
1143 conn->rx_queues = NULL;
1145 conn->on_connect = on_connect;
1146 conn->on_disconnect = on_disconnect;
1147 conn->on_interrupt = on_interrupt;
1148 conn->private_ctx = private_ctx;
1149 memset (&conn->run_args, 0, sizeof (memif_conn_run_args_t));
1151 uint8_t l = strlen ((char *) args->interface_name);
1152 strncpy ((char *) conn->args.interface_name, (char *) args->interface_name,
1155 if ((l = strlen ((char *) args->secret)) > 0)
1156 strncpy ((char *) conn->args.secret, (char *) args->secret, l);
1158 if (args->socket != NULL)
1159 conn->args.socket = args->socket;
1160 else if (lm->default_socket != NULL)
1161 conn->args.socket = lm->default_socket;
1164 err = MEMIF_ERR_INVAL_ARG;
1168 ms = (memif_socket_t *) conn->args.socket;
1170 if ((conn->args.is_master && ms->type == MEMIF_SOCKET_TYPE_CLIENT) ||
1171 (!conn->args.is_master && ms->type == MEMIF_SOCKET_TYPE_LISTENER))
1173 err = MEMIF_ERR_INVAL_ARG;
1177 elt.key = conn->args.interface_id;
1178 elt.data_struct = conn;
1179 add_list_elt (lm, &elt, &ms->interface_list, &ms->interface_list_len);
1182 if (conn->args.is_master)
1184 if (ms->type == MEMIF_SOCKET_TYPE_NONE)
1186 err = memif_socket_start_listening (ms);
1187 if (err != MEMIF_ERR_SUCCESS)
1194 elt.data_struct = conn;
1196 add_list_elt (lm, &elt, &lm->control_list,
1197 &lm->control_list_len)) < 0)
1199 err = MEMIF_ERR_NOMEM;
1203 conn->index = index;
1205 /* try connectiong to master */
1206 err = memif_request_connection (conn);
1207 if ((err != MEMIF_ERR_SUCCESS) && (lm->disconn_slaves == 0))
1209 /* connection failed, arm reconnect timer (if not armed) */
1210 if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0)
1212 err = memif_syscall_error_handler (errno);
1216 lm->disconn_slaves++;
1231 memif_request_connection (memif_conn_handle_t c)
1233 memif_connection_t *conn = (memif_connection_t *) c;
1234 libmemif_main_t *lm;
1236 int err = MEMIF_ERR_SUCCESS;
1238 struct sockaddr_un sun;
1241 return MEMIF_ERR_NOCONN;
1243 ms = (memif_socket_t *) conn->args.socket;
1244 lm = get_libmemif_main (ms);
1247 if (conn->args.is_master || ms->type == MEMIF_SOCKET_TYPE_LISTENER)
1248 return MEMIF_ERR_INVAL_ARG;
1250 return MEMIF_ERR_ALRCONN;
1252 sockfd = socket (AF_UNIX, SOCK_SEQPACKET, 0);
1255 err = memif_syscall_error_handler (errno);
1259 sun.sun_family = AF_UNIX;
1261 strncpy (sun.sun_path, (char *) ms->filename, sizeof (sun.sun_path) - 1);
1263 if (connect (sockfd, (struct sockaddr *) &sun,
1264 sizeof (struct sockaddr_un)) == 0)
1267 conn->read_fn = memif_conn_fd_read_ready;
1268 conn->write_fn = memif_conn_fd_write_ready;
1269 conn->error_fn = memif_conn_fd_error;
1271 lm->control_list[conn->index].key = conn->fd;
1273 lm->control_fd_update (sockfd,
1274 MEMIF_FD_EVENT_READ |
1275 MEMIF_FD_EVENT_WRITE, conn->private_ctx);
1277 lm->disconn_slaves--;
1278 if (lm->disconn_slaves == 0)
1280 if (timerfd_settime (lm->timerfd, 0, &lm->disarm, NULL) < 0)
1282 err = memif_syscall_error_handler (errno);
1289 err = memif_syscall_error_handler (errno);
1290 strcpy ((char *) conn->remote_disconnect_string, memif_strerror (err));
1294 ms->type = MEMIF_SOCKET_TYPE_CLIENT;
1306 memif_control_fd_handler (int fd, uint8_t events)
1308 int i, err = MEMIF_ERR_SUCCESS; /* 0 */
1310 memif_list_elt_t *e = NULL;
1311 memif_connection_t *conn;
1312 libmemif_main_t *lm = &libmemif_main;
1313 if (fd == lm->timerfd)
1317 size = read (fd, &b, sizeof (b));
1322 for (i = 0; i < lm->control_list_len; i++)
1324 if ((lm->control_list[i].key < 0)
1325 && (lm->control_list[i].data_struct != NULL))
1327 conn = lm->control_list[i].data_struct;
1328 if (conn->args.is_master)
1330 err = memif_request_connection (conn);
1331 if (err != MEMIF_ERR_SUCCESS)
1332 DBG ("memif_request_connection: %s", memif_strerror (err));
1338 get_list_elt (&e, lm->interrupt_list, lm->interrupt_list_len, fd);
1341 if (((memif_connection_t *) e->data_struct)->on_interrupt != NULL)
1344 (((memif_connection_t *) e->data_struct)->
1345 args.is_master) ? ((memif_connection_t *) e->
1346 data_struct)->run_args.
1347 num_s2m_rings : ((memif_connection_t *) e->data_struct)->
1348 run_args.num_m2s_rings;
1349 for (i = 0; i < num; i++)
1351 if (((memif_connection_t *) e->data_struct)->
1352 rx_queues[i].int_fd == fd)
1354 ((memif_connection_t *) e->data_struct)->
1355 on_interrupt ((void *) e->data_struct,
1356 ((memif_connection_t *) e->
1357 data_struct)->private_ctx, i);
1358 return MEMIF_ERR_SUCCESS;
1362 return MEMIF_ERR_SUCCESS;
1364 get_list_elt (&e, lm->socket_list, lm->socket_list_len, fd);
1366 && ((memif_socket_t *) e->data_struct)->type ==
1367 MEMIF_SOCKET_TYPE_LISTENER)
1370 memif_conn_fd_accept_ready ((memif_socket_t *) e->data_struct);
1374 get_list_elt (&e, lm->pending_list, lm->pending_list_len, fd);
1377 err = memif_read_ready (lm, fd);
1381 get_list_elt (&e, lm->control_list, lm->control_list_len, fd);
1384 if (events & MEMIF_FD_EVENT_READ)
1387 ((memif_connection_t *) e->data_struct)->
1388 read_fn (e->data_struct);
1389 if (err != MEMIF_ERR_SUCCESS)
1392 if (events & MEMIF_FD_EVENT_WRITE)
1395 ((memif_connection_t *) e->data_struct)->
1396 write_fn (e->data_struct);
1397 if (err != MEMIF_ERR_SUCCESS)
1400 if (events & MEMIF_FD_EVENT_ERROR)
1403 ((memif_connection_t *) e->data_struct)->
1404 error_fn (e->data_struct);
1405 if (err != MEMIF_ERR_SUCCESS)
1411 return MEMIF_ERR_SUCCESS; /* 0 */
1418 memif_per_thread_control_fd_handler (memif_per_thread_main_handle_t pt_main,
1419 int fd, uint8_t events)
1421 int i, err = MEMIF_ERR_SUCCESS; /* 0 */
1423 memif_list_elt_t *e = NULL;
1424 memif_connection_t *conn;
1425 libmemif_main_t *lm = (libmemif_main_t *) pt_main;
1427 if (fd == lm->timerfd)
1431 size = read (fd, &b, sizeof (b));
1436 for (i = 0; i < lm->control_list_len; i++)
1438 if ((lm->control_list[i].key < 0)
1439 && (lm->control_list[i].data_struct != NULL))
1441 conn = lm->control_list[i].data_struct;
1442 if (conn->args.is_master)
1444 err = memif_request_connection (conn);
1445 if (err != MEMIF_ERR_SUCCESS)
1446 DBG ("memif_request_connection: %s", memif_strerror (err));
1452 get_list_elt (&e, lm->interrupt_list, lm->interrupt_list_len, fd);
1455 if (((memif_connection_t *) e->data_struct)->on_interrupt != NULL)
1458 (((memif_connection_t *) e->data_struct)->
1459 args.is_master) ? ((memif_connection_t *) e->
1460 data_struct)->run_args.
1461 num_s2m_rings : ((memif_connection_t *) e->data_struct)->
1462 run_args.num_m2s_rings;
1463 for (i = 0; i < num; i++)
1465 if (((memif_connection_t *) e->data_struct)->
1466 rx_queues[i].int_fd == fd)
1468 ((memif_connection_t *) e->data_struct)->
1469 on_interrupt ((void *) e->data_struct,
1470 ((memif_connection_t *) e->
1471 data_struct)->private_ctx, i);
1472 return MEMIF_ERR_SUCCESS;
1476 return MEMIF_ERR_SUCCESS;
1478 get_list_elt (&e, lm->socket_list, lm->socket_list_len, fd);
1480 && ((memif_socket_t *) e->data_struct)->type ==
1481 MEMIF_SOCKET_TYPE_LISTENER)
1484 memif_conn_fd_accept_ready ((memif_socket_t *) e->data_struct);
1488 get_list_elt (&e, lm->pending_list, lm->pending_list_len, fd);
1491 err = memif_read_ready (lm, fd);
1495 get_list_elt (&e, lm->control_list, lm->control_list_len, fd);
1498 if (events & MEMIF_FD_EVENT_READ)
1501 ((memif_connection_t *) e->data_struct)->
1502 read_fn (e->data_struct);
1503 if (err != MEMIF_ERR_SUCCESS)
1506 if (events & MEMIF_FD_EVENT_WRITE)
1509 ((memif_connection_t *) e->data_struct)->
1510 write_fn (e->data_struct);
1511 if (err != MEMIF_ERR_SUCCESS)
1514 if (events & MEMIF_FD_EVENT_ERROR)
1517 ((memif_connection_t *) e->data_struct)->
1518 error_fn (e->data_struct);
1519 if (err != MEMIF_ERR_SUCCESS)
1525 return MEMIF_ERR_SUCCESS; /* 0 */
1532 memif_poll_event (int timeout)
1534 libmemif_main_t *lm = &libmemif_main;
1535 struct epoll_event evt;
1536 int en = 0, err = MEMIF_ERR_SUCCESS; /* 0 */
1537 uint32_t events = 0;
1538 uint64_t counter = 0;
1540 memset (&evt, 0, sizeof (evt));
1541 evt.events = EPOLLIN | EPOLLOUT;
1543 sigemptyset (&sigset);
1544 en = epoll_pwait (lm->epfd, &evt, 1, timeout, &sigset);
1548 DBG ("epoll_pwait: %s", strerror (err));
1549 return memif_syscall_error_handler (err);
1553 if (evt.data.fd == lm->poll_cancel_fd)
1555 r = read (evt.data.fd, &counter, sizeof (counter));
1557 return MEMIF_ERR_DISCONNECTED;
1559 return MEMIF_ERR_POLL_CANCEL;
1561 if (evt.events & EPOLLIN)
1562 events |= MEMIF_FD_EVENT_READ;
1563 if (evt.events & EPOLLOUT)
1564 events |= MEMIF_FD_EVENT_WRITE;
1565 if (evt.events & EPOLLERR)
1566 events |= MEMIF_FD_EVENT_ERROR;
1567 err = memif_control_fd_handler (evt.data.fd, events);
1574 memif_per_thread_poll_event (memif_per_thread_main_handle_t pt_main,
1577 libmemif_main_t *lm = (libmemif_main_t *) pt_main;
1578 struct epoll_event evt;
1579 int en = 0, err = MEMIF_ERR_SUCCESS; /* 0 */
1580 uint32_t events = 0;
1581 uint64_t counter = 0;
1583 memset (&evt, 0, sizeof (evt));
1584 evt.events = EPOLLIN | EPOLLOUT;
1586 sigemptyset (&sigset);
1587 en = epoll_pwait (lm->epfd, &evt, 1, timeout, &sigset);
1591 DBG ("epoll_pwait: %s", strerror (err));
1592 return memif_syscall_error_handler (err);
1596 if (evt.data.fd == lm->poll_cancel_fd)
1598 r = read (evt.data.fd, &counter, sizeof (counter));
1600 return MEMIF_ERR_DISCONNECTED;
1602 return MEMIF_ERR_POLL_CANCEL;
1604 if (evt.events & EPOLLIN)
1605 events |= MEMIF_FD_EVENT_READ;
1606 if (evt.events & EPOLLOUT)
1607 events |= MEMIF_FD_EVENT_WRITE;
1608 if (evt.events & EPOLLERR)
1609 events |= MEMIF_FD_EVENT_ERROR;
1610 err = memif_control_fd_handler (evt.data.fd, events);
1617 memif_cancel_poll_event ()
1619 libmemif_main_t *lm = &libmemif_main;
1620 uint64_t counter = 1;
1623 if (lm->poll_cancel_fd == -1)
1625 w = write (lm->poll_cancel_fd, &counter, sizeof (counter));
1626 if (w < sizeof (counter))
1627 return MEMIF_ERR_INT_WRITE;
1633 memif_per_thread_cancel_poll_event (memif_per_thread_main_handle_t pt_main)
1635 libmemif_main_t *lm = (libmemif_main_t *) pt_main;
1636 uint64_t counter = 1;
1640 return MEMIF_ERR_INVAL_ARG;
1642 if (lm->poll_cancel_fd == -1)
1644 w = write (lm->poll_cancel_fd, &counter, sizeof (counter));
1645 if (w < sizeof (counter))
1646 return MEMIF_ERR_INT_WRITE;
1652 memif_msg_queue_free (libmemif_main_t * lm, memif_msg_queue_elt_t ** e)
1656 memif_msg_queue_free (lm, &(*e)->next);
1662 /* send disconnect msg and close interface */
1664 memif_disconnect_internal (memif_connection_t * c)
1667 int err = MEMIF_ERR_SUCCESS, i; /* 0 */
1669 libmemif_main_t *lm;
1670 memif_list_elt_t *e;
1674 DBG ("no connection");
1675 return MEMIF_ERR_NOCONN;
1678 lm = get_libmemif_main (c->args.socket);
1680 c->on_disconnect ((void *) c, c->private_ctx);
1684 memif_msg_send_disconnect (c->fd, (uint8_t *) "interface deleted", 0);
1685 lm->control_fd_update (c->fd, MEMIF_FD_EVENT_DEL, c->private_ctx);
1688 get_list_elt (&e, lm->control_list, lm->control_list_len, c->fd);
1691 if (c->args.is_master)
1692 free_list_elt (lm->control_list, lm->control_list_len, c->fd);
1693 e->key = c->fd = -1;
1696 if (c->tx_queues != NULL)
1699 (c->args.is_master) ? c->run_args.num_m2s_rings : c->
1700 run_args.num_s2m_rings;
1701 for (i = 0; i < num; i++)
1703 mq = &c->tx_queues[i];
1708 free_list_elt (lm->interrupt_list, lm->interrupt_list_len,
1713 lm->free (c->tx_queues);
1714 c->tx_queues = NULL;
1717 if (c->rx_queues != NULL)
1720 (c->args.is_master) ? c->run_args.num_s2m_rings : c->
1721 run_args.num_m2s_rings;
1722 for (i = 0; i < num; i++)
1724 mq = &c->rx_queues[i];
1729 if (c->on_interrupt != NULL)
1730 lm->control_fd_update (mq->int_fd, MEMIF_FD_EVENT_DEL,
1734 free_list_elt (lm->interrupt_list, lm->interrupt_list_len,
1739 lm->free (c->rx_queues);
1740 c->rx_queues = NULL;
1743 for (i = 0; i < c->regions_num; i++)
1745 if (&c->regions[i] == NULL)
1747 if (c->regions[i].is_external != 0)
1749 lm->del_external_region (c->regions[i].addr,
1750 c->regions[i].region_size,
1751 c->regions[i].fd, c->private_ctx);
1755 if (munmap (c->regions[i].addr, c->regions[i].region_size) < 0)
1756 return memif_syscall_error_handler (errno);
1757 if (c->regions[i].fd > 0)
1758 close (c->regions[i].fd);
1759 c->regions[i].fd = -1;
1762 lm->free (c->regions);
1766 memset (&c->run_args, 0, sizeof (memif_conn_run_args_t));
1768 memif_msg_queue_free (lm, &c->msg_queue);
1770 if (!(c->args.is_master))
1772 if (lm->disconn_slaves == 0)
1774 if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0)
1776 err = memif_syscall_error_handler (errno);
1777 DBG ("timerfd_settime: arm");
1780 lm->disconn_slaves++;
1787 memif_get_socket_filename (memif_socket_handle_t sock)
1789 memif_socket_t *ms = (memif_socket_t *) sock;
1794 return (char *) ms->filename;
1798 memif_delete_socket (memif_socket_handle_t * sock)
1800 memif_socket_t *ms = (memif_socket_t *) * sock;
1801 libmemif_main_t *lm;
1803 /* check if socket is in use */
1804 if (ms == NULL || ms->use_count > 0)
1805 return MEMIF_ERR_INVAL_ARG;
1807 lm = get_libmemif_main (ms);
1809 lm->free (ms->interface_list);
1810 ms->interface_list = NULL;
1811 lm->free (ms->filename);
1812 ms->filename = NULL;
1816 return MEMIF_ERR_SUCCESS;
1820 memif_delete (memif_conn_handle_t * conn)
1822 memif_connection_t *c = (memif_connection_t *) * conn;
1823 libmemif_main_t *lm;
1824 memif_socket_t *ms = NULL;
1825 int err = MEMIF_ERR_SUCCESS;
1829 DBG ("no connection");
1830 return MEMIF_ERR_NOCONN;
1835 DBG ("DISCONNECTING");
1836 err = memif_disconnect_internal (c);
1837 if (err == MEMIF_ERR_NOCONN)
1841 lm = get_libmemif_main (c->args.socket);
1843 free_list_elt_ctx (lm->control_list, lm->control_list_len, c);
1845 ms = (memif_socket_t *) c->args.socket;
1847 free_list_elt (ms->interface_list, ms->interface_list_len,
1848 c->args.interface_id);
1849 if (ms->use_count <= 0)
1851 /* stop listening on this socket */
1852 if (ms->type == MEMIF_SOCKET_TYPE_LISTENER)
1854 lm->control_fd_update (ms->fd, MEMIF_FD_EVENT_DEL, ms->private_ctx);
1855 free_list_elt (lm->socket_list, lm->socket_list_len, ms->fd);
1859 /* socket not in use */
1860 ms->type = MEMIF_SOCKET_TYPE_NONE;
1863 if (!c->args.is_master)
1865 lm->disconn_slaves--;
1866 if (lm->disconn_slaves <= 0)
1868 if (timerfd_settime (lm->timerfd, 0, &lm->disarm, NULL) < 0)
1870 err = memif_syscall_error_handler (errno);
1871 DBG ("timerfd_settime: disarm");
1884 memif_connect1 (memif_connection_t * c)
1886 libmemif_main_t *lm;
1892 return MEMIF_ERR_INVAL_ARG;
1894 lm = get_libmemif_main (c->args.socket);
1896 for (i = 0; i < c->regions_num; i++)
1898 mr = &c->regions[i];
1903 if (mr->is_external)
1905 if (lm->get_external_region_addr == NULL)
1906 return MEMIF_ERR_INVAL_ARG;
1908 lm->get_external_region_addr (mr->region_size, mr->fd,
1914 return MEMIF_ERR_NO_SHMFD;
1917 mmap (NULL, mr->region_size, PROT_READ | PROT_WRITE,
1918 MAP_SHARED, mr->fd, 0)) == MAP_FAILED)
1920 return memif_syscall_error_handler (errno);
1927 for (i = 0; i < c->rx_queues_num; i++)
1929 mq = &c->rx_queues[i];
1932 mq->ring = c->regions[mq->region].addr + mq->offset;
1933 if (mq->ring->cookie != MEMIF_COOKIE)
1935 DBG ("wrong cookie on rx ring %u", i);
1936 return MEMIF_ERR_COOKIE;
1938 mq->ring->head = mq->ring->tail = mq->last_head = mq->alloc_bufs =
1943 for (i = 0; i < c->tx_queues_num; i++)
1945 mq = &c->tx_queues[i];
1948 mq->ring = c->regions[mq->region].addr + mq->offset;
1949 if (mq->ring->cookie != MEMIF_COOKIE)
1951 DBG ("wrong cookie on tx ring %u", i);
1952 return MEMIF_ERR_COOKIE;
1954 mq->ring->head = mq->ring->tail = mq->last_head = mq->alloc_bufs =
1959 lm->control_fd_update (c->fd, MEMIF_FD_EVENT_READ | MEMIF_FD_EVENT_MOD,
1966 memif_add_region (libmemif_main_t * lm, memif_connection_t * conn,
1967 uint8_t has_buffers)
1972 lm->realloc (conn->regions,
1973 sizeof (memif_region_t) * ++conn->regions_num);
1975 return MEMIF_ERR_NOMEM;
1978 r = &conn->regions[conn->regions_num - 1];
1979 memset (r, 0, sizeof (memif_region_t));
1981 if (has_buffers != 0)
1983 r->buffer_offset = 0;
1988 (conn->run_args.num_s2m_rings +
1989 conn->run_args.num_m2s_rings) * (sizeof (memif_ring_t) +
1990 sizeof (memif_desc_t) *
1992 run_args.log2_ring_size));
1995 r->region_size = (has_buffers == 0) ? r->buffer_offset : r->buffer_offset +
1996 conn->run_args.buffer_size * (1 << conn->run_args.log2_ring_size) *
1997 (conn->run_args.num_s2m_rings + conn->run_args.num_m2s_rings);
1999 if ((r->fd = memfd_create ("memif region 0", MFD_ALLOW_SEALING)) == -1)
2000 return memif_syscall_error_handler (errno);
2002 if ((fcntl (r->fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1)
2003 return memif_syscall_error_handler (errno);
2005 if ((ftruncate (r->fd, r->region_size)) == -1)
2006 return memif_syscall_error_handler (errno);
2008 if ((r->addr = mmap (NULL, r->region_size, PROT_READ | PROT_WRITE,
2009 MAP_SHARED, r->fd, 0)) == MAP_FAILED)
2010 return memif_syscall_error_handler (errno);
2012 return MEMIF_ERR_SUCCESS;
2016 memif_init_queues (libmemif_main_t * lm, memif_connection_t * conn)
2021 for (i = 0; i < conn->run_args.num_s2m_rings; i++)
2023 ring = memif_get_ring (conn, MEMIF_RING_S2M, i);
2024 DBG ("RING: %p I: %d", ring, i);
2025 ring->head = ring->tail = 0;
2026 ring->cookie = MEMIF_COOKIE;
2028 for (j = 0; j < (1 << conn->run_args.log2_ring_size); j++)
2030 uint16_t slot = i * (1 << conn->run_args.log2_ring_size) + j;
2031 ring->desc[j].region = 1;
2032 ring->desc[j].offset =
2033 conn->regions[1].buffer_offset +
2034 (uint32_t) (slot * conn->run_args.buffer_size);
2035 ring->desc[j].length = conn->run_args.buffer_size;
2038 for (i = 0; i < conn->run_args.num_m2s_rings; i++)
2040 ring = memif_get_ring (conn, MEMIF_RING_M2S, i);
2041 DBG ("RING: %p I: %d", ring, i);
2042 ring->head = ring->tail = 0;
2043 ring->cookie = MEMIF_COOKIE;
2045 for (j = 0; j < (1 << conn->run_args.log2_ring_size); j++)
2047 uint16_t slot = (i + conn->run_args.num_s2m_rings) *
2048 (1 << conn->run_args.log2_ring_size) + j;
2049 ring->desc[j].region = 1;
2050 ring->desc[j].offset =
2051 conn->regions[1].buffer_offset +
2052 (uint32_t) (slot * conn->run_args.buffer_size);
2053 ring->desc[j].length = conn->run_args.buffer_size;
2057 DBG ("alloc: %p", lm->alloc);
2058 DBG ("size: %lu", sizeof (memif_queue_t) * conn->run_args.num_s2m_rings);
2060 (memif_queue_t *) lm->alloc (sizeof (memif_queue_t) *
2061 conn->run_args.num_s2m_rings);
2063 return MEMIF_ERR_NOMEM;
2067 for (x = 0; x < conn->run_args.num_s2m_rings; x++)
2069 if ((mq[x].int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
2070 return memif_syscall_error_handler (errno);
2071 e.key = mq[x].int_fd;
2072 e.data_struct = conn;
2073 add_list_elt (lm, &e, &lm->interrupt_list, &lm->interrupt_list_len);
2075 mq[x].ring = memif_get_ring (conn, MEMIF_RING_S2M, x);
2076 DBG ("RING: %p I: %d", mq[x].ring, x);
2077 mq[x].log2_ring_size = conn->run_args.log2_ring_size;
2080 (void *) mq[x].ring - (void *) conn->regions[mq->region].addr;
2081 mq[x].last_head = mq[x].last_tail = 0;
2082 mq[x].alloc_bufs = 0;
2084 conn->tx_queues = mq;
2087 (memif_queue_t *) lm->alloc (sizeof (memif_queue_t) *
2088 conn->run_args.num_m2s_rings);
2090 return MEMIF_ERR_NOMEM;
2092 for (x = 0; x < conn->run_args.num_m2s_rings; x++)
2094 if ((mq[x].int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
2095 return memif_syscall_error_handler (errno);
2096 e.key = mq[x].int_fd;
2097 e.data_struct = conn;
2098 add_list_elt (lm, &e, &lm->interrupt_list, &lm->interrupt_list_len);
2100 mq[x].ring = memif_get_ring (conn, MEMIF_RING_M2S, x);
2101 DBG ("RING: %p I: %d", mq[x].ring, x);
2102 mq[x].log2_ring_size = conn->run_args.log2_ring_size;
2105 (void *) mq[x].ring - (void *) conn->regions[mq->region].addr;
2106 mq[x].last_head = mq[x].last_tail = 0;
2107 mq[x].alloc_bufs = 0;
2109 conn->rx_queues = mq;
2111 return MEMIF_ERR_SUCCESS;
2115 memif_init_regions_and_queues (memif_connection_t * conn)
2118 libmemif_main_t *lm;
2121 return MEMIF_ERR_INVAL_ARG;
2123 lm = get_libmemif_main (conn->args.socket);
2125 /* region 0. rings */
2126 memif_add_region (lm, conn, /* has_buffers */ 0);
2128 /* region 1. buffers */
2129 if (lm->add_external_region)
2132 (memif_region_t *) lm->realloc (conn->regions,
2133 sizeof (memif_region_t) *
2134 ++conn->regions_num);
2136 return MEMIF_ERR_NOMEM;
2139 conn->regions[1].region_size =
2140 conn->run_args.buffer_size * (1 << conn->run_args.log2_ring_size) *
2141 (conn->run_args.num_s2m_rings + conn->run_args.num_m2s_rings);
2142 conn->regions[1].buffer_offset = 0;
2143 lm->add_external_region (&conn->regions[1].addr,
2144 conn->regions[1].region_size,
2145 &conn->regions[1].fd, conn->private_ctx);
2146 conn->regions[1].is_external = 1;
2150 memif_add_region (lm, conn, 1);
2153 memif_init_queues (lm, conn);
2159 memif_buffer_enq_tx (memif_conn_handle_t conn, uint16_t qid,
2160 memif_buffer_t * bufs, uint16_t count,
2161 uint16_t * count_out)
2163 memif_connection_t *c = (memif_connection_t *) conn;
2164 if (EXPECT_FALSE (c == NULL))
2165 return MEMIF_ERR_NOCONN;
2166 if (EXPECT_FALSE (c->fd < 0))
2167 return MEMIF_ERR_DISCONNECTED;
2169 (c->args.is_master) ? c->run_args.num_m2s_rings : c->
2170 run_args.num_s2m_rings;
2171 if (EXPECT_FALSE (qid >= num))
2172 return MEMIF_ERR_QID;
2173 if (EXPECT_FALSE (!count_out))
2174 return MEMIF_ERR_INVAL_ARG;
2175 if (EXPECT_FALSE (c->args.is_master))
2176 return MEMIF_ERR_INVAL_ARG;
2178 memif_queue_t *mq = &c->tx_queues[qid];
2179 memif_ring_t *ring = mq->ring;
2181 uint16_t mask = (1 << mq->log2_ring_size) - 1;
2184 int err = MEMIF_ERR_SUCCESS; /* 0 */
2187 ring_size = (1 << mq->log2_ring_size);
2188 slot = (c->args.is_master) ? ring->tail : ring->head;
2189 slot += mq->alloc_bufs;
2191 /* can only be called by slave */
2192 ns = ring_size - (ring->head + mq->alloc_bufs) + ring->tail;
2198 if (EXPECT_FALSE ((b0->flags & MEMIF_BUFFER_FLAG_RX) == 0))
2200 /* not a valid buffer */
2204 b0->flags &= ~MEMIF_BUFFER_FLAG_RX;
2206 ((memif_ring_t *) b0->ring)->desc[b0->desc_index & mask].offset = ring->desc[slot & mask].offset; /* put free buffer on rx ring */
2208 ring->desc[slot & mask].offset =
2209 (uint32_t) (b0->data -
2210 c->regions[ring->desc[slot & mask].region].addr);
2211 ring->desc[slot & mask].flags &= ~MEMIF_DESC_FLAG_NEXT;
2212 ring->desc[slot & mask].flags |=
2213 (b0->flags & MEMIF_BUFFER_FLAG_NEXT) ? MEMIF_DESC_FLAG_NEXT : 0;
2215 b0->desc_index = slot;
2226 DBG ("allocated: %u/%u bufs. Total %u allocated bufs", *count_out, count,
2231 DBG ("ring buffer full! qid: %u", qid);
2232 err = MEMIF_ERR_NOBUF_RING;
2239 memif_buffer_alloc (memif_conn_handle_t conn, uint16_t qid,
2240 memif_buffer_t * bufs, uint16_t count,
2241 uint16_t * count_out, uint16_t size)
2243 memif_connection_t *c = (memif_connection_t *) conn;
2244 if (EXPECT_FALSE (c == NULL))
2245 return MEMIF_ERR_NOCONN;
2246 if (EXPECT_FALSE (c->fd < 0))
2247 return MEMIF_ERR_DISCONNECTED;
2249 (c->args.is_master) ? c->run_args.num_m2s_rings : c->
2250 run_args.num_s2m_rings;
2251 if (EXPECT_FALSE (qid >= num))
2252 return MEMIF_ERR_QID;
2253 if (EXPECT_FALSE (!count_out))
2254 return MEMIF_ERR_INVAL_ARG;
2256 libmemif_main_t *lm = get_libmemif_main (c->args.socket);
2257 memif_queue_t *mq = &c->tx_queues[qid];
2258 memif_ring_t *ring = mq->ring;
2260 uint16_t mask = (1 << mq->log2_ring_size) - 1;
2261 uint32_t offset_mask = c->run_args.buffer_size - 1;
2264 int err = MEMIF_ERR_SUCCESS; /* 0 */
2265 uint16_t dst_left, src_left;
2266 uint16_t saved_count;
2267 memif_buffer_t *saved_b;
2270 ring_size = (1 << mq->log2_ring_size);
2271 slot = (c->args.is_master) ? ring->tail : ring->head;
2272 slot += mq->alloc_bufs;
2274 if (c->args.is_master)
2275 ns = ring->head - (ring->tail + mq->alloc_bufs);
2277 ns = ring_size - (ring->head + mq->alloc_bufs) + ring->tail;
2281 b0 = (bufs + *count_out);
2284 saved_count = count;
2286 b0->desc_index = slot;
2287 ring->desc[slot & mask].flags = 0;
2289 /* slave can produce buffer with original length */
2290 dst_left = (c->args.is_master) ? ring->desc[slot & mask].length :
2291 c->run_args.buffer_size;
2296 if (EXPECT_FALSE (dst_left == 0))
2305 ring->desc[b0->desc_index & mask].flags |=
2306 MEMIF_DESC_FLAG_NEXT;
2307 b0->flags |= MEMIF_BUFFER_FLAG_NEXT;
2309 b0 = (bufs + *count_out);
2310 b0->desc_index = slot;
2312 (c->args.is_master) ? ring->desc[slot & mask].
2313 length : c->run_args.buffer_size;
2314 ring->desc[slot & mask].flags = 0;
2318 /* rollback allocated chain buffers */
2319 memset (saved_b, 0, sizeof (memif_buffer_t)
2320 * (saved_count - count + 1));
2321 *count_out -= saved_count - count;
2322 mq->alloc_bufs = saved_count - count;
2326 b0->len = memif_min (dst_left, src_left);
2328 /* slave resets buffer offset */
2329 if (c->args.is_master == 0)
2331 memif_desc_t *d = &ring->desc[slot & mask];
2332 if (lm->get_external_buffer_offset)
2333 d->offset = lm->get_external_buffer_offset (c->private_ctx);
2335 d->offset = d->offset - (d->offset & offset_mask);
2337 b0->data = memif_get_buffer (c, ring, slot & mask);
2339 src_left -= b0->len;
2340 dst_left -= b0->len;
2352 DBG ("allocated: %u/%u bufs. Total %u allocated bufs", *count_out, count,
2357 DBG ("ring buffer full! qid: %u", qid);
2358 err = MEMIF_ERR_NOBUF_RING;
2365 memif_refill_queue (memif_conn_handle_t conn, uint16_t qid, uint16_t count,
2368 memif_connection_t *c = (memif_connection_t *) conn;
2369 if (EXPECT_FALSE (c == NULL))
2370 return MEMIF_ERR_NOCONN;
2371 if (EXPECT_FALSE (c->fd < 0))
2372 return MEMIF_ERR_DISCONNECTED;
2374 (c->args.is_master) ? c->run_args.num_s2m_rings : c->
2375 run_args.num_m2s_rings;
2376 if (EXPECT_FALSE (qid >= num))
2377 return MEMIF_ERR_QID;
2378 libmemif_main_t *lm = get_libmemif_main (c->args.socket);
2379 memif_queue_t *mq = &c->rx_queues[qid];
2380 memif_ring_t *ring = mq->ring;
2381 uint16_t mask = (1 << mq->log2_ring_size) - 1;
2382 uint32_t offset_mask = c->run_args.buffer_size - 1;
2385 if (c->args.is_master)
2387 MEMIF_MEMORY_BARRIER ();
2389 (ring->tail + count <=
2390 mq->last_head) ? ring->tail + count : mq->last_head;
2391 return MEMIF_ERR_SUCCESS;
2394 uint16_t head = ring->head;
2395 uint16_t ns = (1 << mq->log2_ring_size) - head + mq->last_tail;
2396 head += (count < ns) ? count : ns;
2402 d = &ring->desc[slot & mask];
2404 d->length = c->run_args.buffer_size - headroom;
2405 if (lm->get_external_buffer_offset)
2406 d->offset = lm->get_external_buffer_offset (c->private_ctx);
2408 d->offset = d->offset - (d->offset & offset_mask) + headroom;
2412 MEMIF_MEMORY_BARRIER ();
2415 return MEMIF_ERR_SUCCESS; /* 0 */
2419 memif_tx_burst (memif_conn_handle_t conn, uint16_t qid,
2420 memif_buffer_t * bufs, uint16_t count, uint16_t * tx)
2422 memif_connection_t *c = (memif_connection_t *) conn;
2423 if (EXPECT_FALSE (c == NULL))
2424 return MEMIF_ERR_NOCONN;
2425 if (EXPECT_FALSE (c->fd < 0))
2426 return MEMIF_ERR_DISCONNECTED;
2428 (c->args.is_master) ? c->run_args.num_m2s_rings : c->
2429 run_args.num_s2m_rings;
2430 if (EXPECT_FALSE (qid >= num))
2431 return MEMIF_ERR_QID;
2432 if (EXPECT_FALSE (!tx))
2433 return MEMIF_ERR_INVAL_ARG;
2435 memif_queue_t *mq = &c->tx_queues[qid];
2436 memif_ring_t *ring = mq->ring;
2437 uint16_t mask = (1 << mq->log2_ring_size) - 1;
2441 if (count > mq->alloc_bufs)
2442 count = mq->alloc_bufs;
2444 if (EXPECT_FALSE (count == 0))
2445 return MEMIF_ERR_SUCCESS;
2450 ring->desc[b0->desc_index & mask].length = b0->len;
2452 #ifdef MEMIF_DBG_SHM
2453 printf ("offset: %-6d\n", ring->desc[b0->desc_index & mask].offset);
2454 printf ("data: %p\n",
2455 memif_get_buffer (c, ring, b0->desc_index & mask));
2456 printf ("index: %u\n", b0->desc_index);
2457 print_bytes (memif_get_buffer (c, ring, b0->desc_index & mask),
2458 ring->desc[b0->desc_index & mask].length, DBG_TX_BUF);
2459 #endif /* MEMIF_DBG_SHM */
2466 MEMIF_MEMORY_BARRIER ();
2467 if (c->args.is_master)
2468 ring->tail = b0->desc_index + 1;
2470 ring->head = b0->desc_index + 1;
2472 mq->alloc_bufs -= *tx;
2474 if ((ring->flags & MEMIF_RING_FLAG_MASK_INT) == 0)
2477 int r = write (mq->int_fd, &a, sizeof (a));
2479 return MEMIF_ERR_INT_WRITE;
2482 return MEMIF_ERR_SUCCESS; /* 0 */
2486 memif_rx_burst (memif_conn_handle_t conn, uint16_t qid,
2487 memif_buffer_t * bufs, uint16_t count, uint16_t * rx)
2489 memif_connection_t *c = (memif_connection_t *) conn;
2490 if (EXPECT_FALSE (c == NULL))
2491 return MEMIF_ERR_NOCONN;
2492 if (EXPECT_FALSE (c->fd < 0))
2493 return MEMIF_ERR_DISCONNECTED;
2495 (c->args.is_master) ? c->run_args.num_s2m_rings : c->
2496 run_args.num_m2s_rings;
2497 if (EXPECT_FALSE (qid >= num))
2498 return MEMIF_ERR_QID;
2499 if (EXPECT_FALSE (!rx))
2500 return MEMIF_ERR_INVAL_ARG;
2502 memif_queue_t *mq = &c->rx_queues[qid];
2503 memif_ring_t *ring = mq->ring;
2504 uint16_t cur_slot, last_slot;
2506 uint16_t mask = (1 << mq->log2_ring_size) - 1;
2511 ssize_t r = read (mq->int_fd, &b, sizeof (b));
2512 if (EXPECT_FALSE ((r == -1) && (errno != EAGAIN)))
2513 return memif_syscall_error_handler (errno);
2515 cur_slot = (c->args.is_master) ? mq->last_head : mq->last_tail;
2516 last_slot = (c->args.is_master) ? ring->head : ring->tail;
2517 if (cur_slot == last_slot)
2518 return MEMIF_ERR_SUCCESS;
2520 ns = last_slot - cur_slot;
2526 b0->desc_index = cur_slot;
2527 b0->data = memif_get_buffer (c, ring, cur_slot & mask);
2528 b0->len = ring->desc[cur_slot & mask].length;
2529 /* slave resets buffer length */
2530 if (c->args.is_master == 0)
2532 ring->desc[cur_slot & mask].length = c->run_args.buffer_size;
2535 b0->flags = MEMIF_BUFFER_FLAG_RX;
2536 if (ring->desc[cur_slot & mask].flags & MEMIF_DESC_FLAG_NEXT)
2538 b0->flags |= MEMIF_BUFFER_FLAG_NEXT;
2539 ring->desc[cur_slot & mask].flags &= ~MEMIF_DESC_FLAG_NEXT;
2541 /* b0->offset = ring->desc[cur_slot & mask].offset;*/
2543 #ifdef MEMIF_DBG_SHM
2544 printf ("data: %p\n", b0->data);
2545 printf ("index: %u\n", b0->desc_index);
2546 printf ("ring: %p\n", b0->ring);
2547 print_bytes (b0->data, b0->len, DBG_RX_BUF);
2548 #endif /* MEMIF_DBG_SHM */
2556 if (c->args.is_master)
2557 mq->last_head = cur_slot;
2559 mq->last_tail = cur_slot;
2563 DBG ("not enough buffers!");
2564 return MEMIF_ERR_NOBUF;
2567 return MEMIF_ERR_SUCCESS; /* 0 */
2571 memif_get_details (memif_conn_handle_t conn, memif_details_t * md,
2572 char *buf, ssize_t buflen)
2574 memif_connection_t *c = (memif_connection_t *) conn;
2575 libmemif_main_t *lm;
2577 int err = MEMIF_ERR_SUCCESS, i;
2581 return MEMIF_ERR_NOCONN;
2583 ms = (memif_socket_t *) c->args.socket;
2584 lm = get_libmemif_main (ms);
2586 l1 = strlen ((char *) c->args.interface_name);
2587 if (l0 + l1 < buflen)
2590 (uint8_t *) strcpy (buf + l0, (char *) c->args.interface_name);
2594 err = MEMIF_ERR_NOBUF_DET;
2596 l1 = strlen ((char *) lm->app_name);
2597 if (l0 + l1 < buflen)
2599 md->inst_name = (uint8_t *) strcpy (buf + l0, (char *) lm->app_name);
2603 err = MEMIF_ERR_NOBUF_DET;
2605 l1 = strlen ((char *) c->remote_if_name);
2606 if (l0 + l1 < buflen)
2608 md->remote_if_name =
2609 (uint8_t *) strcpy (buf + l0, (char *) c->remote_if_name);
2613 err = MEMIF_ERR_NOBUF_DET;
2615 l1 = strlen ((char *) c->remote_name);
2616 if (l0 + l1 < buflen)
2618 md->remote_inst_name =
2619 (uint8_t *) strcpy (buf + l0, (char *) c->remote_name);
2623 err = MEMIF_ERR_NOBUF_DET;
2625 md->id = c->args.interface_id;
2627 if (strlen ((char *) c->args.secret) > 0)
2629 l1 = strlen ((char *) c->args.secret);
2630 if (l0 + l1 < buflen)
2632 md->secret = (uint8_t *) strcpy (buf + l0, (char *) c->args.secret);
2636 err = MEMIF_ERR_NOBUF_DET;
2639 md->role = (c->args.is_master) ? 0 : 1;
2640 md->mode = c->args.mode;
2642 l1 = strlen ((char *) ms->filename);
2643 if (l0 + l1 < buflen)
2645 md->socket_filename =
2646 (uint8_t *) strcpy (buf + l0, (char *) ms->filename);
2650 err = MEMIF_ERR_NOBUF_DET;
2652 l1 = strlen ((char *) c->remote_disconnect_string);
2653 if (l0 + l1 < buflen)
2656 (uint8_t *) strcpy (buf + l0, (char *) c->remote_disconnect_string);
2660 err = MEMIF_ERR_NOBUF_DET;
2662 md->regions_num = c->regions_num;
2663 l1 = sizeof (memif_region_details_t) * md->regions_num;
2664 if (l0 + l1 <= buflen)
2666 md->regions = (memif_region_details_t *) (buf + l0);
2667 for (i = 0; i < md->regions_num; i++)
2669 md->regions[i].index = i;
2670 md->regions[i].addr = c->regions[i].addr;
2671 md->regions[i].size = c->regions[i].region_size;
2672 md->regions[i].fd = c->regions[i].fd;
2673 md->regions[i].is_external = c->regions[i].is_external;
2678 err = MEMIF_ERR_NOBUF_DET;
2681 (c->args.is_master) ? c->run_args.num_s2m_rings : c->
2682 run_args.num_m2s_rings;
2684 l1 = sizeof (memif_queue_details_t) * md->rx_queues_num;
2685 if (l0 + l1 <= buflen)
2687 md->rx_queues = (memif_queue_details_t *) (buf + l0);
2688 for (i = 0; i < md->rx_queues_num; i++)
2690 md->rx_queues[i].region = c->rx_queues[i].region;
2691 md->rx_queues[i].qid = i;
2692 md->rx_queues[i].ring_size = (1 << c->rx_queues[i].log2_ring_size);
2693 md->rx_queues[i].flags = c->rx_queues[i].ring->flags;
2694 md->rx_queues[i].head = c->rx_queues[i].ring->head;
2695 md->rx_queues[i].tail = c->rx_queues[i].ring->tail;
2696 md->rx_queues[i].buffer_size = c->run_args.buffer_size;
2701 err = MEMIF_ERR_NOBUF_DET;
2704 (c->args.is_master) ? c->run_args.num_m2s_rings : c->
2705 run_args.num_s2m_rings;
2707 l1 = sizeof (memif_queue_details_t) * md->tx_queues_num;
2708 if (l0 + l1 <= buflen)
2710 md->tx_queues = (memif_queue_details_t *) (buf + l0);
2711 for (i = 0; i < md->tx_queues_num; i++)
2713 md->tx_queues[i].region = c->tx_queues[i].region;
2714 md->tx_queues[i].qid = i;
2715 md->tx_queues[i].ring_size = (1 << c->tx_queues[i].log2_ring_size);
2716 md->tx_queues[i].flags = c->tx_queues[i].ring->flags;
2717 md->tx_queues[i].head = c->tx_queues[i].ring->head;
2718 md->tx_queues[i].tail = c->tx_queues[i].ring->tail;
2719 md->tx_queues[i].buffer_size = c->run_args.buffer_size;
2724 err = MEMIF_ERR_NOBUF_DET;
2726 md->link_up_down = (c->fd > 0) ? 1 : 0;
2732 memif_get_queue_efd (memif_conn_handle_t conn, uint16_t qid, int *efd)
2734 memif_connection_t *c = (memif_connection_t *) conn;
2739 return MEMIF_ERR_NOCONN;
2741 return MEMIF_ERR_DISCONNECTED;
2744 (c->args.is_master) ? c->run_args.num_s2m_rings : c->
2745 run_args.num_m2s_rings;
2747 return MEMIF_ERR_QID;
2749 *efd = c->rx_queues[qid].int_fd;
2751 return MEMIF_ERR_SUCCESS;
2757 libmemif_main_t *lm = &libmemif_main;
2760 err = memif_delete_socket ((memif_socket_handle_t *) & lm->default_socket);
2761 if (err != MEMIF_ERR_SUCCESS)
2764 if (lm->control_list)
2765 lm->free (lm->control_list);
2766 lm->control_list = NULL;
2767 if (lm->interrupt_list)
2768 lm->free (lm->interrupt_list);
2769 lm->interrupt_list = NULL;
2770 if (lm->socket_list)
2771 lm->free (lm->socket_list);
2772 lm->socket_list = NULL;
2773 if (lm->pending_list)
2774 lm->free (lm->pending_list);
2775 lm->pending_list = NULL;
2776 if (lm->poll_cancel_fd != -1)
2777 close (lm->poll_cancel_fd);
2779 return MEMIF_ERR_SUCCESS; /* 0 */
2783 memif_per_thread_cleanup (memif_per_thread_main_handle_t * pt_main)
2785 libmemif_main_t *lm = (libmemif_main_t *) * pt_main;
2788 return MEMIF_ERR_INVAL_ARG;
2790 /* No default socket in case of per thread */
2792 if (lm->control_list)
2793 lm->free (lm->control_list);
2794 lm->control_list = NULL;
2795 if (lm->interrupt_list)
2796 lm->free (lm->interrupt_list);
2797 lm->interrupt_list = NULL;
2798 if (lm->socket_list)
2799 lm->free (lm->socket_list);
2800 lm->socket_list = NULL;
2801 if (lm->pending_list)
2802 lm->free (lm->pending_list);
2803 lm->pending_list = NULL;
2804 if (lm->poll_cancel_fd != -1)
2805 close (lm->poll_cancel_fd);
2811 return MEMIF_ERR_SUCCESS; /* 0 */