#define MEMIF_MEMORY_BARRIER() __sync_synchronize ()
#endif /* __x86_x64__ */
-libmemif_main_t libmemif_main;
-
static char memif_buf[MAX_ERRBUF_LEN];
const char *memif_errlist[ERRLIST_LEN] = { /* MEMIF_ERR_SUCCESS */
else
{
strlcpy (memif_buf, memif_errlist[err_code], sizeof (memif_buf));
+ memif_buf[strlen (memif_errlist[err_code])] = '\0';
}
return memif_buf;
}
return MEMIF_VERSION;
}
+const char *
+memif_get_version_str ()
+{
+#define __STR_HELPER(x) #x
+#define __STR(x) __STR_HELPER (x)
+ return __STR (MEMIF_VERSION_MAJOR) "." __STR (MEMIF_VERSION_MINOR);
+#undef __STR
+#undef __STR_HELPER
+}
+
#define DBG_TX_BUF (0)
#define DBG_RX_BUF (1)
return MEMIF_ERR_SYSCALL;
}
-/* Always valid */
-libmemif_main_t *
-get_libmemif_main (memif_socket_t * ms)
-{
- if (ms != NULL && ms->lm != NULL)
- return ms->lm;
- return &libmemif_main;
-}
-
static int
-memif_add_epoll_fd (libmemif_main_t * lm, int fd, uint32_t events)
+memif_add_epoll_fd (memif_socket_t *ms, memif_fd_event_t fde, uint32_t events)
{
- if (fd < 0)
+ if (fde.fd < 0)
{
- DBG ("invalid fd %d", fd);
+ DBG ("invalid fd %d", fde.fd);
return -1;
}
struct epoll_event evt;
memset (&evt, 0, sizeof (evt));
evt.events = events;
- evt.data.fd = fd;
- if (epoll_ctl (lm->epfd, EPOLL_CTL_ADD, fd, &evt) < 0)
+ evt.data.ptr = fde.private_ctx;
+ if (epoll_ctl (ms->epfd, EPOLL_CTL_ADD, fde.fd, &evt) < 0)
{
- DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
+ DBG ("epoll_ctl: %s fd %d", strerror (errno), fde.fd);
return -1;
}
- DBG ("fd %d added to epoll", fd);
+ DBG ("fd %d added to epoll", fde.fd);
return 0;
}
static int
-memif_mod_epoll_fd (libmemif_main_t * lm, int fd, uint32_t events)
+memif_mod_epoll_fd (memif_socket_t *ms, memif_fd_event_t fde, uint32_t events)
{
- if (fd < 0)
+ if (fde.fd < 0)
{
- DBG ("invalid fd %d", fd);
+ DBG ("invalid fd %d", fde.fd);
return -1;
}
struct epoll_event evt;
memset (&evt, 0, sizeof (evt));
evt.events = events;
- evt.data.fd = fd;
- if (epoll_ctl (lm->epfd, EPOLL_CTL_MOD, fd, &evt) < 0)
+ evt.data.ptr = fde.private_ctx;
+ if (epoll_ctl (ms->epfd, EPOLL_CTL_MOD, fde.fd, &evt) < 0)
{
- DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
+ DBG ("epoll_ctl: %s fd %d", strerror (errno), fde.fd);
return -1;
}
- DBG ("fd %d modified on epoll", fd);
+ DBG ("fd %d modified on epoll", fde.fd);
return 0;
}
static int
-memif_del_epoll_fd (libmemif_main_t * lm, int fd)
+memif_del_epoll_fd (memif_socket_t *ms, memif_fd_event_t fde)
{
- if (fd < 0)
+ if (fde.fd < 0)
{
- DBG ("invalid fd %d", fd);
+ DBG ("invalid fd %d", fde.fd);
return -1;
}
struct epoll_event evt;
memset (&evt, 0, sizeof (evt));
- if (epoll_ctl (lm->epfd, EPOLL_CTL_DEL, fd, &evt) < 0)
+ if (epoll_ctl (ms->epfd, EPOLL_CTL_DEL, fde.fd, &evt) < 0)
{
- DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
+ DBG ("epoll_ctl: %s fd %d", strerror (errno), fde.fd);
return -1;
}
- DBG ("fd %d removed from epoll", fd);
+ DBG ("fd %d removed from epoll", fde.fd);
return 0;
}
int
-memif_control_fd_update (int fd, uint8_t events, void *private_ctx)
+memif_control_fd_update (memif_fd_event_t fde, void *private_ctx)
{
- libmemif_main_t *lm;
+ memif_socket_t *ms = (memif_socket_t *) private_ctx;
+ int fd;
- lm = (private_ctx == NULL) ? &libmemif_main : (libmemif_main_t *) private_ctx;
+ if (ms == NULL)
+ return MEMIF_ERR_INVAL_ARG;
- if (events & MEMIF_FD_EVENT_DEL)
- return memif_del_epoll_fd (lm, fd);
+ if (fde.type & MEMIF_FD_EVENT_DEL)
+ return memif_del_epoll_fd (ms, fde);
uint32_t evt = 0;
- if (events & MEMIF_FD_EVENT_READ)
+ if (fde.type & MEMIF_FD_EVENT_READ)
evt |= EPOLLIN;
- if (events & MEMIF_FD_EVENT_WRITE)
+ if (fde.type & MEMIF_FD_EVENT_WRITE)
evt |= EPOLLOUT;
- if (events & MEMIF_FD_EVENT_MOD)
- return memif_mod_epoll_fd (lm, fd, evt);
+ if (fde.type & MEMIF_FD_EVENT_MOD)
+ return memif_mod_epoll_fd (ms, fde, evt);
- return memif_add_epoll_fd (lm, fd, evt);
-}
-
-int
-add_list_elt (libmemif_main_t * lm, memif_list_elt_t * e,
- memif_list_elt_t ** list, uint16_t * len)
-{
- memif_list_elt_t *tmp;
- int i;
-
- for (i = 0; i < *len; i++)
- {
- if ((*list)[i].data_struct == NULL)
- {
- (*list)[i].key = e->key;
- (*list)[i].data_struct = e->data_struct;
- return i;
- }
- }
-
- tmp = lm->realloc (*list, sizeof (memif_list_elt_t) * *len * 2);
- if (tmp == NULL)
- return -1;
-
- for (i = *len; i < *len * 2; i++)
- {
- tmp[i].key = -1;
- tmp[i].data_struct = NULL;
- }
-
- tmp[*len].key = e->key;
- tmp[*len].data_struct = e->data_struct;
- i = *len;
- *len = *len * 2;
- *list = tmp;
-
- return i;
-}
-
-int
-get_list_elt (memif_list_elt_t ** e, memif_list_elt_t * list, uint16_t len,
- int key)
-{
- int i;
- if (key == -1)
- {
- *e = NULL;
- return -1;
- }
-
- for (i = 0; i < len; i++)
- {
- if (list[i].key == key)
- {
- *e = &list[i];
- return 0;
- }
- }
- *e = NULL;
- return -1;
-}
-
-/* does not free memory, only marks element as free */
-int
-free_list_elt (memif_list_elt_t * list, uint16_t len, int key)
-{
- int i;
- for (i = 0; i < len; i++)
- {
- if (list[i].key == key)
- {
- list[i].key = -1;
- list[i].data_struct = NULL;
- return 0;
- }
- }
-
- return -1;
-}
-
-int
-free_list_elt_ctx (memif_list_elt_t * list, uint16_t len,
- memif_connection_t * ctx)
-{
- int i;
- for (i = 0; i < len; i++)
- {
- if (list[i].key == -1)
- {
- if (list[i].data_struct == ctx)
- {
- list[i].data_struct = NULL;
- return 0;
- }
- }
- }
-
- return -1;
+ return memif_add_epoll_fd (ms, fde, evt);
}
static void
-memif_control_fd_update_register (libmemif_main_t * lm,
- memif_control_fd_update_t * cb)
+memif_control_fd_update_register (memif_socket_t *ms,
+ memif_control_fd_update_t *cb)
{
- lm->control_fd_update = cb;
+ ms->args.on_control_fd_update = cb;
}
void
-memif_register_external_region (memif_add_external_region_t * ar,
- memif_get_external_region_addr_t * gr,
- memif_del_external_region_t * dr,
- memif_get_external_buffer_offset_t * go)
+memif_register_external_region (memif_socket_handle_t sock,
+ memif_add_external_region_t *ar,
+ memif_get_external_region_addr_t *gr,
+ memif_del_external_region_t *dr,
+ memif_get_external_buffer_offset_t *go)
{
- libmemif_main_t *lm = &libmemif_main;
- lm->add_external_region = ar;
- lm->get_external_region_addr = gr;
- lm->del_external_region = dr;
- lm->get_external_buffer_offset = go;
+ memif_socket_t *ms = (memif_socket_t *) sock;
+ ms->add_external_region = ar;
+ ms->get_external_region_addr = gr;
+ ms->del_external_region = dr;
+ ms->get_external_buffer_offset = go;
}
static void
-memif_alloc_register (libmemif_main_t * lm, memif_alloc_t * ma)
+memif_alloc_register (memif_socket_t *ms, memif_alloc_t *ma)
{
- lm->alloc = ma;
+ ms->args.alloc = ma;
}
static void
-memif_realloc_register (libmemif_main_t * lm, memif_realloc_t * mr)
+memif_realloc_register (memif_socket_t *ms, memif_realloc_t *mr)
{
- lm->realloc = mr;
+ ms->args.realloc = mr;
}
static void
-memif_free_register (libmemif_main_t * lm, memif_free_t * mf)
+memif_free_register (memif_socket_t *ms, memif_free_t *mf)
{
- lm->free = mf;
-}
-
-int
-memif_set_connection_request_timer (struct itimerspec timer)
-{
- libmemif_main_t *lm = &libmemif_main;
- int err = MEMIF_ERR_SUCCESS;
-
- lm->arm = timer;
-
- /* overwrite timer, if already armed */
- if (lm->disconn_slaves != 0)
- {
- if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0)
- {
- err = memif_syscall_error_handler (errno);
- }
- }
- return err;
-}
-
-int
-memif_init (memif_control_fd_update_t * on_control_fd_update, char *app_name,
- memif_alloc_t * memif_alloc, memif_realloc_t * memif_realloc,
- memif_free_t * memif_free)
-{
- int err = MEMIF_ERR_SUCCESS; /* 0 */
- libmemif_main_t *lm = &libmemif_main;
- memset (lm, 0, sizeof (libmemif_main_t));
-
- /* register custom memory management */
- if (memif_alloc != NULL)
- {
- memif_alloc_register (lm, memif_alloc);
- }
- else
- memif_alloc_register (lm, malloc);
-
- if (memif_realloc != NULL)
- {
- memif_realloc_register (lm, memif_realloc);
- }
- else
- memif_realloc_register (lm, realloc);
-
- if (memif_free != NULL)
- memif_free_register (lm, memif_free);
- else
- memif_free_register (lm, free);
-
- if (app_name != NULL)
- {
- strlcpy ((char *) lm->app_name, app_name, sizeof (lm->app_name));
- }
- else
- {
- strlcpy ((char *) lm->app_name, MEMIF_DEFAULT_APP_NAME,
- sizeof (lm->app_name));
- }
-
- lm->poll_cancel_fd = -1;
- /* register control fd update callback */
- if (on_control_fd_update != NULL)
- memif_control_fd_update_register (lm, on_control_fd_update);
- else
- {
- lm->epfd = epoll_create (1);
- memif_control_fd_update_register (lm, memif_control_fd_update);
- if ((lm->poll_cancel_fd = eventfd (0, EFD_NONBLOCK)) < 0)
- {
- err = errno;
- DBG ("eventfd: %s", strerror (err));
- return memif_syscall_error_handler (err);
- }
- lm->control_fd_update (lm->poll_cancel_fd, MEMIF_FD_EVENT_READ, lm->private_ctx);
- DBG ("libmemif event polling initialized");
- }
-
- lm->control_list_len = 2;
- lm->interrupt_list_len = 2;
- lm->socket_list_len = 1;
- lm->pending_list_len = 1;
-
- lm->control_list =
- lm->alloc (sizeof (memif_list_elt_t) * lm->control_list_len);
- if (lm->control_list == NULL)
- {
- err = MEMIF_ERR_NOMEM;
- goto error;
- }
- lm->interrupt_list =
- lm->alloc (sizeof (memif_list_elt_t) * lm->interrupt_list_len);
- if (lm->interrupt_list == NULL)
- {
- err = MEMIF_ERR_NOMEM;
- goto error;
- }
- lm->socket_list =
- lm->alloc (sizeof (memif_list_elt_t) * lm->socket_list_len);
- if (lm->socket_list == NULL)
- {
- err = MEMIF_ERR_NOMEM;
- goto error;
- }
- lm->pending_list =
- lm->alloc (sizeof (memif_list_elt_t) * lm->pending_list_len);
- if (lm->pending_list == NULL)
- {
- err = MEMIF_ERR_NOMEM;
- goto error;
- }
-
- int i;
- for (i = 0; i < lm->control_list_len; i++)
- {
- lm->control_list[i].key = -1;
- lm->control_list[i].data_struct = NULL;
- }
- for (i = 0; i < lm->interrupt_list_len; i++)
- {
- lm->interrupt_list[i].key = -1;
- lm->interrupt_list[i].data_struct = NULL;
- }
- for (i = 0; i < lm->socket_list_len; i++)
- {
- lm->socket_list[i].key = -1;
- lm->socket_list[i].data_struct = NULL;
- }
- for (i = 0; i < lm->pending_list_len; i++)
- {
- lm->pending_list[i].key = -1;
- lm->pending_list[i].data_struct = NULL;
- }
-
- lm->disconn_slaves = 0;
-
- lm->timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK);
- if (lm->timerfd < 0)
- {
- err = memif_syscall_error_handler (errno);
- goto error;
- }
-
- lm->arm.it_value.tv_sec = MEMIF_DEFAULT_RECONNECT_PERIOD_SEC;
- lm->arm.it_value.tv_nsec = MEMIF_DEFAULT_RECONNECT_PERIOD_NSEC;
- lm->arm.it_interval.tv_sec = MEMIF_DEFAULT_RECONNECT_PERIOD_SEC;
- lm->arm.it_interval.tv_nsec = MEMIF_DEFAULT_RECONNECT_PERIOD_NSEC;
-
- if (lm->control_fd_update (lm->timerfd, MEMIF_FD_EVENT_READ, lm->private_ctx) < 0)
- {
- DBG ("callback type memif_control_fd_update_t error!");
- err = MEMIF_ERR_CB_FDUPDATE;
- goto error;
- }
-
- /* Create default socket */
- err = memif_create_socket ((memif_socket_handle_t *) &
- lm->default_socket,
- MEMIF_DEFAULT_SOCKET_PATH, NULL);
- if (err != MEMIF_ERR_SUCCESS)
- goto error;
-
- return err;
-
-error:
- memif_cleanup ();
- return err;
+ ms->args.free = mf;
}
static inline memif_ring_t *
return MEMIF_ERR_SUCCESS;
}
-static int
-memif_socket_start_listening (memif_socket_t * ms)
+int
+memif_poll_cancel_handler (memif_fd_event_type_t type, void *private_ctx)
{
- libmemif_main_t *lm = get_libmemif_main (ms);
- memif_list_elt_t elt;
- struct stat file_stat;
- struct sockaddr_un un = { 0 };
- int on = 1;
- int err = MEMIF_ERR_SUCCESS;
+ return MEMIF_ERR_POLL_CANCEL;
+}
+
+int
+memif_connect_handler (memif_fd_event_type_t type, void *private_ctx)
+{
+ memif_socket_t *ms = (memif_socket_t *) private_ctx;
+ memif_connection_t *c;
- if (ms->type == MEMIF_SOCKET_TYPE_CLIENT)
+ /* loop ms->slave_interfaces and request connection for disconnected ones */
+ TAILQ_FOREACH (c, &ms->slave_interfaces, next)
+ {
+ /* connected or connecting */
+ if (c->control_channel != NULL)
+ continue;
+
+ /* ignore errors */
+ memif_request_connection (c);
+ }
+
+ return MEMIF_ERR_SUCCESS;
+}
+
+int
+memif_set_connection_request_timer (memif_socket_handle_t sock,
+ struct itimerspec timer)
+{
+ memif_socket_t *ms = (memif_socket_t *) sock;
+ memif_fd_event_t fde;
+ memif_fd_event_data_t *fdata;
+ void *ctx;
+
+ if (ms == NULL)
return MEMIF_ERR_INVAL_ARG;
- /* check if file exists */
- if (stat ((char *) ms->filename, &file_stat) == 0)
+ if (ms->timer_fd < 0)
{
- if (S_ISSOCK (file_stat.st_mode))
- unlink ((char *) ms->filename);
- else
+ /* only create new timer if there is a valid interval */
+ if (timer.it_interval.tv_sec == 0 && timer.it_interval.tv_nsec == 0)
+ return MEMIF_ERR_SUCCESS;
+
+ /* create timerfd */
+ ms->timer_fd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK);
+ if (ms->timer_fd < 0)
return memif_syscall_error_handler (errno);
- }
- ms->fd = socket (AF_UNIX, SOCK_SEQPACKET, 0);
- if (ms->fd < 0)
- {
- err = memif_syscall_error_handler (errno);
- goto error;
- }
+ /* start listening for events */
+ fdata = ms->args.alloc (sizeof (*fdata));
+ fdata->event_handler = memif_connect_handler;
+ fdata->private_ctx = ms;
- DBG ("socket %d created", ms->fd);
- un.sun_family = AF_UNIX;
- strlcpy ((char *) un.sun_path, (char *) ms->filename, sizeof (un.sun_path));
- if (setsockopt (ms->fd, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on)) < 0)
- {
- err = memif_syscall_error_handler (errno);
- goto error;
- }
- if (bind (ms->fd, (struct sockaddr *) &un, sizeof (un)) < 0)
- {
- err = memif_syscall_error_handler (errno);
- goto error;
- }
- if (listen (ms->fd, 1) < 0)
- {
- err = memif_syscall_error_handler (errno);
- goto error;
- }
- if (stat ((char *) ms->filename, &file_stat) < 0)
- {
- err = memif_syscall_error_handler (errno);
- goto error;
- }
+ fde.fd = ms->timer_fd;
+ fde.type = MEMIF_FD_EVENT_READ;
+ fde.private_ctx = fdata;
- /* add socket to libmemif main */
- elt.key = ms->fd;
- elt.data_struct = ms;
- add_list_elt (lm, &elt, &lm->socket_list, &lm->socket_list_len);
- /* if lm->private_ctx == lm event polling is done by libmemif */
- lm->control_fd_update (ms->fd, MEMIF_FD_EVENT_READ, lm->private_ctx);
+ ctx = ms->epfd != -1 ? ms : ms->private_ctx;
+ ms->args.on_control_fd_update (fde, ctx);
+ }
- ms->type = MEMIF_SOCKET_TYPE_LISTENER;
+ ms->args.connection_request_timer = timer;
- return err;
+ /* arm the timer */
+ if (timerfd_settime (ms->timer_fd, 0, &ms->args.connection_request_timer,
+ NULL) < 0)
+ return memif_syscall_error_handler (errno);
-error:
- if (ms->fd > 0)
- {
- close (ms->fd);
- ms->fd = -1;
- }
- return err;
+ return MEMIF_ERR_SUCCESS;
}
int
-memif_create_socket (memif_socket_handle_t * sock, const char *filename,
+memif_create_socket (memif_socket_handle_t *sock, memif_socket_args_t *args,
void *private_ctx)
{
- libmemif_main_t *lm = &libmemif_main;
memif_socket_t *ms = (memif_socket_t *) * sock;
+ memif_fd_event_t fde;
+ memif_fd_event_data_t *fdata;
int i, err = MEMIF_ERR_SUCCESS;
-
- for (i = 0; i < lm->socket_list_len; i++)
- {
- if ((ms = (memif_socket_t *) lm->socket_list[i].data_struct) != NULL)
- {
- if (strncmp ((char *) ms->filename, filename,
- strlen ((char *) ms->filename)) == 0)
- return MEMIF_ERR_INVAL_ARG;
- }
- }
+ void *ctx;
/* allocate memif_socket_t */
ms = NULL;
- ms = lm->alloc (sizeof (memif_socket_t));
+ if (args->alloc != NULL)
+ ms = args->alloc (sizeof (memif_socket_t));
+ else
+ ms = malloc (sizeof (memif_socket_t));
if (ms == NULL)
{
err = MEMIF_ERR_NOMEM;
goto error;
}
+
+ /* default values */
memset (ms, 0, sizeof (memif_socket_t));
- /* set filename */
- memset (ms->filename, 0, sizeof (ms->filename));
- strlcpy ((char *) ms->filename, filename, sizeof (ms->filename));
+ ms->epfd = -1;
+ ms->listener_fd = -1;
+ ms->poll_cancel_fd = -1;
+ ms->timer_fd = -1;
+
+ /* copy arguments to internal struct */
+ memcpy (&ms->args, args, sizeof (*args));
+ /* Handle abstract socket by converting '@' -> '\0' */
+ if (ms->args.path[0] == '@')
+ ms->args.path[0] = '\0';
+ ms->private_ctx = private_ctx;
+
+ if (ms->args.alloc == NULL)
+ memif_alloc_register (ms, malloc);
+ if (ms->args.realloc == NULL)
+ memif_realloc_register (ms, realloc);
+ if (ms->args.free == NULL)
+ memif_free_register (ms, free);
+
+ TAILQ_INIT (&ms->master_interfaces);
+ TAILQ_INIT (&ms->slave_interfaces);
+
+ /* FIXME: implement connection request timer */
+
+ /* initialize internal epoll */
+ if (ms->args.on_control_fd_update == NULL)
+ {
+ ms->epfd = epoll_create (1);
+ /* register default fd update callback */
+ memif_control_fd_update_register (ms, memif_control_fd_update);
+ ms->poll_cancel_fd = eventfd (0, EFD_NONBLOCK);
+ if (ms->poll_cancel_fd < 0)
+ {
+ err = errno;
+ DBG ("eventfd: %s", strerror (err));
+ return memif_syscall_error_handler (err);
+ }
+ /* add interrupt fd to epfd */
+ fdata = ms->args.alloc (sizeof (*fdata));
+ fdata->event_handler = memif_poll_cancel_handler;
+ fdata->private_ctx = ms;
- ms->type = MEMIF_SOCKET_TYPE_NONE;
+ fde.fd = ms->poll_cancel_fd;
+ fde.type = MEMIF_FD_EVENT_READ;
+ fde.private_ctx = fdata;
- ms->interface_list_len = 1;
- ms->interface_list =
- lm->alloc (sizeof (memif_list_elt_t) * ms->interface_list_len);
- if (ms->interface_list == NULL)
- {
- err = MEMIF_ERR_NOMEM;
- goto error;
+ ctx = ms->epfd != -1 ? ms : ms->private_ctx;
+ ms->args.on_control_fd_update (fde, ctx);
}
- ms->interface_list[0].key = -1;
- ms->interface_list[0].data_struct = NULL;
+
+ err =
+ memif_set_connection_request_timer (ms, ms->args.connection_request_timer);
+ if (err != MEMIF_ERR_SUCCESS)
+ goto error;
*sock = ms;
error:
if (ms != NULL)
{
- if (ms->fd > 0)
- {
- close (ms->fd);
- ms->fd = -1;
- }
- if (ms->interface_list != NULL)
- {
- lm->free (ms->interface_list);
- ms->interface_list = NULL;
- ms->interface_list_len = 0;
- }
- lm->free (ms);
- *sock = ms = NULL;
+ ms->args.free (ms);
+ if (ms->epfd != -1)
+ close (ms->epfd);
+ if (ms->poll_cancel_fd != -1)
+ close (ms->poll_cancel_fd);
}
return err;
}
+memif_socket_handle_t
+memif_get_socket_handle (memif_conn_handle_t conn)
+{
+ memif_connection_t *c = (memif_connection_t *) conn;
+
+ if (c == NULL)
+ return NULL;
+
+ return c->args.socket;
+}
+
+const char *
+memif_get_socket_path (memif_socket_handle_t sock)
+{
+ memif_socket_t *ms = (memif_socket_t *) sock;
+
+ if (ms == NULL)
+ return NULL;
+
+ return ms->args.path;
+}
+
+int
+memif_get_listener_fd (memif_socket_handle_t sock)
+{
+ memif_socket_t *ms = (memif_socket_t *) sock;
+
+ if (ms == NULL)
+ return -1;
+
+ return ms->listener_fd;
+}
int
-memif_create (memif_conn_handle_t * c, memif_conn_args_t * args,
- memif_connection_update_t * on_connect,
- memif_connection_update_t * on_disconnect,
- memif_interrupt_t * on_interrupt, void *private_ctx)
+memif_set_listener_fd (memif_socket_handle_t sock, int fd)
+{
+ memif_socket_t *ms = (memif_socket_t *) sock;
+ memif_fd_event_t fde;
+ memif_fd_event_data_t *fdata;
+ void *ctx;
+
+ if ((ms == NULL) || (fd < 0))
+ return MEMIF_ERR_INVAL_ARG;
+
+ fdata = ms->args.alloc (sizeof (*fdata));
+ if (fdata == NULL)
+ return MEMIF_ERR_NOMEM;
+
+ ms->listener_fd = fd;
+
+ fdata->event_handler = memif_listener_handler;
+ fdata->private_ctx = ms;
+ ctx = ms->epfd != -1 ? ms : ms->private_ctx;
+ /* send fd to epoll */
+ fde.fd = ms->listener_fd;
+ fde.type = MEMIF_FD_EVENT_READ;
+ fde.private_ctx = fdata;
+ ms->args.on_control_fd_update (fde, ctx);
+
+ return MEMIF_ERR_SUCCESS;
+}
+
+int
+memif_create (memif_conn_handle_t *c, memif_conn_args_t *args,
+ memif_connection_update_t *on_connect,
+ memif_connection_update_t *on_disconnect,
+ memif_on_interrupt_t *on_interrupt, void *private_ctx)
{
- libmemif_main_t *lm = get_libmemif_main (args->socket);
int err, index = 0;
- memif_list_elt_t elt;
memif_connection_t *conn = (memif_connection_t *) * c;
- memif_socket_t *ms;
+ memif_socket_t *ms = (memif_socket_t *) args->socket;
if (conn != NULL)
{
return MEMIF_ERR_CONN;
}
- conn = (memif_connection_t *) lm->alloc (sizeof (memif_connection_t));
+ if (ms == NULL)
+ {
+ DBG ("Missing memif socket");
+ return MEMIF_ERR_INVAL_ARG;
+ }
+
+ conn = (memif_connection_t *) ms->args.alloc (sizeof (*conn));
if (conn == NULL)
{
err = MEMIF_ERR_NOMEM;
conn->args.log2_ring_size = args->log2_ring_size;
conn->args.is_master = args->is_master;
conn->args.mode = args->mode;
- conn->msg_queue = NULL;
+ conn->args.socket = args->socket;
conn->regions = NULL;
conn->tx_queues = NULL;
conn->rx_queues = NULL;
- conn->fd = -1;
+ conn->control_channel = NULL;
conn->on_connect = on_connect;
conn->on_disconnect = on_disconnect;
conn->on_interrupt = on_interrupt;
conn->private_ctx = private_ctx;
memset (&conn->run_args, 0, sizeof (memif_conn_run_args_t));
+ uint8_t l = sizeof (conn->args.interface_name);
strlcpy ((char *) conn->args.interface_name, (char *) args->interface_name,
- sizeof (conn->args.interface_name));
+ l);
- if ((strlen ((char *) args->secret)) > 0)
+ if ((l = strlen ((char *) args->secret)) > 0)
strlcpy ((char *) conn->args.secret, (char *) args->secret,
sizeof (conn->args.secret));
- if (args->socket != NULL)
- conn->args.socket = args->socket;
- else if (lm->default_socket != NULL)
- conn->args.socket = lm->default_socket;
+ if (args->is_master)
+ TAILQ_INSERT_TAIL (&ms->master_interfaces, conn, next);
else
- {
- err = MEMIF_ERR_INVAL_ARG;
- goto error;
- }
+ TAILQ_INSERT_TAIL (&ms->slave_interfaces, conn, next);
- ms = (memif_socket_t *) conn->args.socket;
-
- if ((conn->args.is_master && ms->type == MEMIF_SOCKET_TYPE_CLIENT) ||
- (!conn->args.is_master && ms->type == MEMIF_SOCKET_TYPE_LISTENER))
+ err = memif_request_connection (conn);
+ if (err != MEMIF_ERR_SUCCESS && err != MEMIF_ERR_CONNREFUSED)
{
- err = MEMIF_ERR_INVAL_ARG;
+ if (args->is_master)
+ TAILQ_REMOVE (&ms->master_interfaces, conn, next);
+ else
+ TAILQ_REMOVE (&ms->slave_interfaces, conn, next);
goto error;
}
- elt.key = conn->args.interface_id;
- elt.data_struct = conn;
- add_list_elt (lm, &elt, &ms->interface_list, &ms->interface_list_len);
- ms->use_count++;
-
- if (conn->args.is_master)
- {
- if (ms->type == MEMIF_SOCKET_TYPE_NONE)
- {
- err = memif_socket_start_listening (ms);
- if (err != MEMIF_ERR_SUCCESS)
- goto error;
- }
- }
- else
- {
- elt.key = -1;
- elt.data_struct = conn;
- if ((index =
- add_list_elt (lm, &elt, &lm->control_list,
- &lm->control_list_len)) < 0)
- {
- err = MEMIF_ERR_NOMEM;
- goto error;
- }
-
- conn->index = index;
-
- /* try connecting to master */
- err = memif_request_connection (conn);
- if ((err != MEMIF_ERR_SUCCESS) && (lm->disconn_slaves == 0))
- {
- /* connection failed, arm reconnect timer (if not armed) */
- if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0)
- {
- err = memif_syscall_error_handler (errno);
- goto error;
- }
- }
- lm->disconn_slaves++;
- }
-
*c = conn;
return 0;
error:
if (conn != NULL)
- lm->free (conn);
+ ms->args.free (conn);
*c = conn = NULL;
return err;
}
memif_request_connection (memif_conn_handle_t c)
{
memif_connection_t *conn = (memif_connection_t *) c;
- libmemif_main_t *lm;
memif_socket_t *ms;
int err = MEMIF_ERR_SUCCESS;
int sockfd = -1;
- struct sockaddr_un sun;
+ struct sockaddr_un un = { 0 };
+ struct stat file_stat;
+ int on = 1;
+ memif_control_channel_t *cc = NULL;
+ memif_fd_event_t fde;
+ memif_fd_event_data_t *fdata = NULL;
+ void *ctx;
if (conn == NULL)
return MEMIF_ERR_NOCONN;
ms = (memif_socket_t *) conn->args.socket;
- lm = get_libmemif_main (ms);
-
- if (conn->args.is_master || ms->type == MEMIF_SOCKET_TYPE_LISTENER)
- return MEMIF_ERR_INVAL_ARG;
- if (conn->fd > 0)
+ /* if control channel is assigned, the interface is either connected or
+ * connecting */
+ if (conn->control_channel != NULL)
return MEMIF_ERR_ALRCONN;
+ /* if interface is master and the socket is already listener we are done */
+ if (conn->args.is_master && (ms->listener_fd != -1))
+ return MEMIF_ERR_SUCCESS;
sockfd = socket (AF_UNIX, SOCK_SEQPACKET, 0);
if (sockfd < 0)
goto error;
}
- sun.sun_family = AF_UNIX;
+ un.sun_family = AF_UNIX;
- strlcpy (sun.sun_path, (char *) ms->filename, sizeof (sun.sun_path));
+ /* use memcpy to support abstract socket
+ * ms->args.path is already a valid socket path
+ */
+ memcpy (un.sun_path, ms->args.path, sizeof (un.sun_path) - 1);
- if (connect (sockfd, (struct sockaddr *) &sun,
- sizeof (struct sockaddr_un)) == 0)
+ /* allocate fd event data */
+ fdata = ms->args.alloc (sizeof (*fdata));
+ if (fdata == NULL)
{
- conn->fd = sockfd;
- conn->read_fn = memif_conn_fd_read_ready;
- conn->write_fn = memif_conn_fd_write_ready;
- conn->error_fn = memif_conn_fd_error;
-
- lm->control_list[conn->index].key = conn->fd;
- lm->control_fd_update (sockfd,
- MEMIF_FD_EVENT_READ |
- MEMIF_FD_EVENT_WRITE, lm->private_ctx);
-
- lm->disconn_slaves--;
- if (lm->disconn_slaves == 0)
+ err = MEMIF_ERR_NOMEM;
+ goto error;
+ }
+
+ if (conn->args.is_master != 0)
+ {
+ /* Configure socket optins */
+ if (setsockopt (sockfd, SOL_SOCKET, SO_PASSCRED, &on, sizeof (on)) < 0)
+ {
+ err = memif_syscall_error_handler (errno);
+ goto error;
+ }
+ if (bind (sockfd, (struct sockaddr *) &un, sizeof (un)) < 0)
+ {
+ err = memif_syscall_error_handler (errno);
+ goto error;
+ }
+ if (listen (sockfd, 1) < 0)
+ {
+ err = memif_syscall_error_handler (errno);
+ goto error;
+ }
+ if (ms->args.path[0] != '\0')
{
- if (timerfd_settime (lm->timerfd, 0, &lm->disarm, NULL) < 0)
+ /* Verify that the socket was created */
+ if (stat ((char *) ms->args.path, &file_stat) < 0)
{
err = memif_syscall_error_handler (errno);
- return err;
+ goto error;
}
}
+
+ /* assign listener fd */
+ ms->listener_fd = sockfd;
+
+ fdata->event_handler = memif_listener_handler;
+ fdata->private_ctx = ms;
}
else
{
- err = memif_syscall_error_handler (errno);
- strcpy ((char *) conn->remote_disconnect_string, memif_strerror (err));
- goto error;
+ cc = ms->args.alloc (sizeof (*cc));
+ if (cc == NULL)
+ {
+ err = MEMIF_ERR_NOMEM;
+ goto error;
+ }
+ if (connect (sockfd, (struct sockaddr *) &un,
+ sizeof (struct sockaddr_un)) != 0)
+ {
+ err = MEMIF_ERR_CONNREFUSED;
+ goto error;
+ }
+
+ /* Create control channel */
+ cc->fd = sockfd;
+ cc->sock = ms;
+ cc->conn = conn;
+ TAILQ_INIT (&cc->msg_queue);
+
+ /* assign control channel to endpoint */
+ conn->control_channel = cc;
+
+ fdata->event_handler = memif_control_channel_handler;
+ fdata->private_ctx = cc;
}
- ms->type = MEMIF_SOCKET_TYPE_CLIENT;
+ /* if event polling is done internally, send memif socket as context */
+ ctx = ms->epfd != -1 ? ms : ms->private_ctx;
+ /* send fd to epoll */
+ fde.fd = sockfd;
+ fde.type = MEMIF_FD_EVENT_READ;
+ fde.private_ctx = fdata;
+ ms->args.on_control_fd_update (fde, ctx);
return err;
if (sockfd > 0)
close (sockfd);
sockfd = -1;
+ if (fdata != NULL)
+ ms->args.free (fdata);
+ fdata = NULL;
+ if (cc != NULL)
+ ms->args.free (cc);
+ conn->control_channel = cc = NULL;
return err;
}
int
-memif_control_fd_handler (int fd, uint8_t events)
+memif_control_fd_handler (void *ptr, memif_fd_event_type_t events)
{
- int i, err = MEMIF_ERR_SUCCESS; /* 0 */
- uint16_t num;
- memif_list_elt_t *e = NULL;
- memif_connection_t *conn;
- libmemif_main_t *lm = &libmemif_main;
- if (fd == lm->timerfd)
- {
- uint64_t b;
- ssize_t size;
- size = read (fd, &b, sizeof (b));
+ memif_fd_event_data_t *fdata = (memif_fd_event_data_t *) ptr;
- if (size == -1)
- goto error;
-
- for (i = 0; i < lm->control_list_len; i++)
- {
- if ((lm->control_list[i].key < 0)
- && (lm->control_list[i].data_struct != NULL))
- {
- conn = lm->control_list[i].data_struct;
- if (conn->args.is_master)
- continue;
- err = memif_request_connection (conn);
- if (err != MEMIF_ERR_SUCCESS)
- DBG ("memif_request_connection: %s", memif_strerror (err));
- }
- }
- }
- else
- {
- get_list_elt (&e, lm->interrupt_list, lm->interrupt_list_len, fd);
- if (e != NULL)
- {
- if (((memif_connection_t *) e->data_struct)->on_interrupt != NULL)
- {
- num =
- (((memif_connection_t *) e->data_struct)->
- args.is_master) ? ((memif_connection_t *) e->
- data_struct)->run_args.
- num_s2m_rings : ((memif_connection_t *) e->data_struct)->
- run_args.num_m2s_rings;
- for (i = 0; i < num; i++)
- {
- if (((memif_connection_t *) e->data_struct)->
- rx_queues[i].int_fd == fd)
- {
- ((memif_connection_t *) e->data_struct)->
- on_interrupt ((void *) e->data_struct,
- ((memif_connection_t *) e->
- data_struct)->private_ctx, i);
- return MEMIF_ERR_SUCCESS;
- }
- }
- }
- return MEMIF_ERR_SUCCESS;
- }
- get_list_elt (&e, lm->socket_list, lm->socket_list_len, fd);
- if (e != NULL
- && ((memif_socket_t *) e->data_struct)->type ==
- MEMIF_SOCKET_TYPE_LISTENER)
- {
- err =
- memif_conn_fd_accept_ready ((memif_socket_t *) e->data_struct);
- return err;
- }
+ if (fdata == NULL)
+ return MEMIF_ERR_INVAL_ARG;
- get_list_elt (&e, lm->pending_list, lm->pending_list_len, fd);
- if (e != NULL)
- {
- err = memif_read_ready (lm, fd);
- return err;
- }
+ return fdata->event_handler (events, fdata->private_ctx);
+}
- get_list_elt (&e, lm->control_list, lm->control_list_len, fd);
- if (e != NULL)
- {
- if (events & MEMIF_FD_EVENT_READ)
- {
- err =
- ((memif_connection_t *) e->data_struct)->
- read_fn (e->data_struct);
- if (err != MEMIF_ERR_SUCCESS)
- return err;
- }
- if (events & MEMIF_FD_EVENT_WRITE)
- {
- err =
- ((memif_connection_t *) e->data_struct)->
- write_fn (e->data_struct);
- if (err != MEMIF_ERR_SUCCESS)
- return err;
- }
- if (events & MEMIF_FD_EVENT_ERROR)
- {
- err =
- ((memif_connection_t *) e->data_struct)->
- error_fn (e->data_struct);
- if (err != MEMIF_ERR_SUCCESS)
- return err;
- }
- }
- }
+int
+memif_interrupt_handler (memif_fd_event_type_t type, void *private_ctx)
+{
+ memif_interrupt_t *idata = (memif_interrupt_t *) private_ctx;
- return MEMIF_ERR_SUCCESS; /* 0 */
+ if (idata == NULL)
+ return MEMIF_ERR_INVAL_ARG;
-error:
- return err;
+ return idata->c->on_interrupt (idata->c, idata->c->private_ctx, idata->qid);
}
-
int
-memif_poll_event (int timeout)
+memif_poll_event (memif_socket_handle_t sock, int timeout)
{
- libmemif_main_t *lm = &libmemif_main;
+ memif_socket_t *ms = (memif_socket_t *) sock;
struct epoll_event evt;
int en = 0, err = MEMIF_ERR_SUCCESS; /* 0 */
- uint32_t events = 0;
+ memif_fd_event_type_t events = 0;
uint64_t counter = 0;
ssize_t r = 0;
+ sigset_t sigset;
+
+ if (ms == NULL)
+ return MEMIF_ERR_INVAL_ARG;
+
memset (&evt, 0, sizeof (evt));
evt.events = EPOLLIN | EPOLLOUT;
- sigset_t sigset;
sigemptyset (&sigset);
- en = epoll_pwait (lm->epfd, &evt, 1, timeout, &sigset);
+ en = epoll_pwait (ms->epfd, &evt, 1, timeout, &sigset);
if (en < 0)
{
err = errno;
}
if (en > 0)
{
- if (evt.data.fd == lm->poll_cancel_fd)
- {
- r = read (evt.data.fd, &counter, sizeof (counter));
- if (r == -1)
- return MEMIF_ERR_DISCONNECTED;
-
- return MEMIF_ERR_POLL_CANCEL;
- }
if (evt.events & EPOLLIN)
events |= MEMIF_FD_EVENT_READ;
if (evt.events & EPOLLOUT)
events |= MEMIF_FD_EVENT_WRITE;
if (evt.events & EPOLLERR)
events |= MEMIF_FD_EVENT_ERROR;
- err = memif_control_fd_handler (evt.data.fd, events);
- return err;
+ return memif_control_fd_handler (evt.data.ptr, events);
}
- return 0;
+ return MEMIF_ERR_SUCCESS;
}
int
-memif_cancel_poll_event ()
+memif_cancel_poll_event (memif_socket_handle_t sock)
{
- libmemif_main_t *lm = &libmemif_main;
+ memif_socket_t *ms = (memif_socket_t *) sock;
uint64_t counter = 1;
ssize_t w = 0;
- if (lm->poll_cancel_fd == -1)
- return 0;
- w = write (lm->poll_cancel_fd, &counter, sizeof (counter));
+ if (ms->poll_cancel_fd == -1)
+ return MEMIF_ERR_INVAL_ARG;
+ w = write (ms->poll_cancel_fd, &counter, sizeof (counter));
if (w < sizeof (counter))
return MEMIF_ERR_INT_WRITE;
- return 0;
+ return MEMIF_ERR_SUCCESS;
}
-static void
-memif_msg_queue_free (libmemif_main_t * lm, memif_msg_queue_elt_t ** e)
+void
+memif_close_queues (memif_socket_t *ms, memif_queue_t *queues, int nqueues)
{
- if (*e == NULL)
- return;
- memif_msg_queue_free (lm, &(*e)->next);
- lm->free (*e);
- *e = NULL;
- return;
+ memif_fd_event_t fde;
+ memif_queue_t *mq;
+ void *ctx;
+
+ int i;
+ for (i = 0; i < nqueues; i++)
+ {
+ mq = &queues[i];
+ if (mq != NULL)
+ {
+ if (mq->int_fd > 0)
+ {
+ /* Stop listening for events */
+ fde.fd = mq->int_fd;
+ fde.type = MEMIF_FD_EVENT_DEL;
+ ctx = ms->epfd != -1 ? ms : ms->private_ctx;
+ ms->args.on_control_fd_update (fde, ctx);
+ close (mq->int_fd);
+ }
+ mq->int_fd = -1;
+ }
+ }
}
/* send disconnect msg and close interface */
{
int err = MEMIF_ERR_SUCCESS, i; /* 0 */
memif_queue_t *mq;
- libmemif_main_t *lm;
- memif_list_elt_t *e;
-
- if (c == NULL)
- {
- DBG ("no connection");
- return MEMIF_ERR_NOCONN;
- }
-
- lm = get_libmemif_main (c->args.socket);
+ memif_socket_t *ms = (memif_socket_t *) c->args.socket;
+ memif_fd_event_t fde;
+ void *ctx;
c->on_disconnect ((void *) c, c->private_ctx);
- if (c->fd > 0)
- {
- memif_msg_send_disconnect (c->fd, (uint8_t *) "interface deleted", 0);
- lm->control_fd_update (c->fd, MEMIF_FD_EVENT_DEL, lm->private_ctx);
- close (c->fd);
- }
- get_list_elt (&e, lm->control_list, lm->control_list_len, c->fd);
- if (e != NULL)
- {
- if (c->args.is_master)
- free_list_elt (lm->control_list, lm->control_list_len, c->fd);
- e->key = c->fd = -1;
- }
+ /* Delete control channel */
+ if (c->control_channel != NULL)
+ memif_delete_control_channel (c->control_channel);
if (c->tx_queues != NULL)
{
- for (i = 0; i < c->tx_queues_num; i++)
- {
- mq = &c->tx_queues[i];
- if (mq != NULL)
- {
- if (mq->int_fd > 0)
- close (mq->int_fd);
- free_list_elt (lm->interrupt_list, lm->interrupt_list_len,
- mq->int_fd);
- mq->int_fd = -1;
- }
- }
- lm->free (c->tx_queues);
+ memif_close_queues (ms, c->tx_queues, c->tx_queues_num);
+ ms->args.free (c->tx_queues);
c->tx_queues = NULL;
}
c->tx_queues_num = 0;
if (c->rx_queues != NULL)
{
- for (i = 0; i < c->rx_queues_num; i++)
- {
- mq = &c->rx_queues[i];
- if (mq != NULL)
- {
- if (mq->int_fd > 0)
- {
- if (c->on_interrupt != NULL)
- lm->control_fd_update (mq->int_fd, MEMIF_FD_EVENT_DEL,
- lm->private_ctx);
- close (mq->int_fd);
- }
- free_list_elt (lm->interrupt_list, lm->interrupt_list_len,
- mq->int_fd);
- mq->int_fd = -1;
- }
- }
- lm->free (c->rx_queues);
+ memif_close_queues (ms, c->rx_queues, c->rx_queues_num);
+ ms->args.free (c->rx_queues);
c->rx_queues = NULL;
}
c->rx_queues_num = 0;
+ /* TODO: Slave reuse regions */
+
for (i = 0; i < c->regions_num; i++)
{
if (&c->regions[i] == NULL)
continue;
if (c->regions[i].is_external != 0)
{
- lm->del_external_region (c->regions[i].addr,
- c->regions[i].region_size,
- c->regions[i].fd, c->private_ctx);
+ ms->del_external_region (c->regions[i].addr,
+ c->regions[i].region_size, c->regions[i].fd,
+ c->private_ctx);
}
else
{
c->regions[i].fd = -1;
}
}
- lm->free (c->regions);
+ ms->args.free (c->regions);
c->regions = NULL;
c->regions_num = 0;
memset (&c->run_args, 0, sizeof (memif_conn_run_args_t));
- memif_msg_queue_free (lm, &c->msg_queue);
-
- if (!(c->args.is_master))
- {
- if (lm->disconn_slaves == 0)
- {
- if (timerfd_settime (lm->timerfd, 0, &lm->arm, NULL) < 0)
- {
- err = memif_syscall_error_handler (errno);
- DBG ("timerfd_settime: arm");
- }
- }
- lm->disconn_slaves++;
- }
-
return err;
}
if (ms == NULL)
return NULL;
- return (char *) ms->filename;
+ return (char *) ms->args.path;
}
int
memif_delete_socket (memif_socket_handle_t * sock)
{
memif_socket_t *ms = (memif_socket_t *) * sock;
- libmemif_main_t *lm;
+ memif_fd_event_t fde;
+ void *ctx;
/* check if socket is in use */
- if (ms == NULL || ms->use_count > 0)
+ if (ms == NULL || !TAILQ_EMPTY (&ms->master_interfaces) ||
+ !TAILQ_EMPTY (&ms->slave_interfaces))
return MEMIF_ERR_INVAL_ARG;
- lm = get_libmemif_main (ms);
+ if (ms->listener_fd > 0)
+ {
+ fde.fd = ms->listener_fd;
+ fde.type = MEMIF_FD_EVENT_DEL;
+ ctx = ms->epfd != -1 ? ms : ms->private_ctx;
+ ms->args.on_control_fd_update (fde, ctx);
+ }
+ ms->listener_fd = -1;
+
+ if (ms->poll_cancel_fd > 0)
+ {
+ fde.fd = ms->poll_cancel_fd;
+ fde.type = MEMIF_FD_EVENT_DEL;
+ ctx = ms->epfd != -1 ? ms : ms->private_ctx;
+ ms->args.on_control_fd_update (fde, ctx);
+ }
+ ms->poll_cancel_fd = -1;
+
+ if (ms->epfd > 0)
+ close (ms->epfd);
+ ms->epfd = -1;
- lm->free (ms->interface_list);
- ms->interface_list = NULL;
- lm->free (ms);
+ ms->args.free (ms);
*sock = ms = NULL;
return MEMIF_ERR_SUCCESS;
memif_delete (memif_conn_handle_t * conn)
{
memif_connection_t *c = (memif_connection_t *) * conn;
- libmemif_main_t *lm;
- memif_socket_t *ms = NULL;
+ memif_socket_t *ms;
int err = MEMIF_ERR_SUCCESS;
if (c == NULL)
return MEMIF_ERR_NOCONN;
}
- if (c->fd > 0)
- {
- DBG ("DISCONNECTING");
- err = memif_disconnect_internal (c);
- if (err == MEMIF_ERR_NOCONN)
- return err;
- }
-
- lm = get_libmemif_main (c->args.socket);
-
- free_list_elt_ctx (lm->control_list, lm->control_list_len, c);
+ err = memif_disconnect_internal (c);
ms = (memif_socket_t *) c->args.socket;
- ms->use_count--;
- free_list_elt (ms->interface_list, ms->interface_list_len,
- c->args.interface_id);
- if (ms->use_count <= 0)
- {
- /* stop listening on this socket */
- if (ms->type == MEMIF_SOCKET_TYPE_LISTENER)
- {
- lm->control_fd_update (ms->fd, MEMIF_FD_EVENT_DEL, lm->private_ctx);
- free_list_elt (lm->socket_list, lm->socket_list_len, ms->fd);
- close (ms->fd);
- ms->fd = -1;
- }
- /* socket not in use */
- ms->type = MEMIF_SOCKET_TYPE_NONE;
- }
- if (!c->args.is_master)
- {
- lm->disconn_slaves--;
- if (lm->disconn_slaves <= 0)
- {
- if (timerfd_settime (lm->timerfd, 0, &lm->disarm, NULL) < 0)
- {
- err = memif_syscall_error_handler (errno);
- DBG ("timerfd_settime: disarm");
- }
- }
- }
+ if (c->args.is_master)
+ TAILQ_REMOVE (&ms->master_interfaces, c, next);
+ else
+ TAILQ_REMOVE (&ms->slave_interfaces, c, next);
+ /* TODO: don't listen with empty interface queue */
- lm->free (c);
+ ms->args.free (c);
c = NULL;
*conn = c;
int
memif_connect1 (memif_connection_t * c)
{
- libmemif_main_t *lm;
+ memif_socket_t *ms;
memif_region_t *mr;
memif_queue_t *mq;
int i;
if (c == NULL)
return MEMIF_ERR_INVAL_ARG;
- lm = get_libmemif_main (c->args.socket);
+ ms = (memif_socket_t *) c->args.socket;
for (i = 0; i < c->regions_num; i++)
{
{
if (mr->is_external)
{
- if (lm->get_external_region_addr == NULL)
+ if (ms->get_external_region_addr == NULL)
return MEMIF_ERR_INVAL_ARG;
- mr->addr =
- lm->get_external_region_addr (mr->region_size, mr->fd,
- c->private_ctx);
+ mr->addr = ms->get_external_region_addr (
+ mr->region_size, mr->fd, c->private_ctx);
}
else
{
return MEMIF_ERR_NO_SHMFD;
if ((mr->addr =
- mmap (NULL, mr->region_size, PROT_READ | PROT_WRITE,
- MAP_SHARED, mr->fd, 0)) == MAP_FAILED)
+ mmap (NULL, mr->region_size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, mr->fd, 0)) == MAP_FAILED)
{
return memif_syscall_error_handler (errno);
}
}
}
- lm->control_fd_update (c->fd, MEMIF_FD_EVENT_READ | MEMIF_FD_EVENT_MOD,
- lm->private_ctx);
-
return 0;
}
static inline int
-memif_add_region (libmemif_main_t * lm, memif_connection_t * conn,
- uint8_t has_buffers)
+memif_add_region (memif_connection_t *conn, uint8_t has_buffers)
{
memif_region_t *r;
+ memif_socket_t *ms = (memif_socket_t *) conn->args.socket;
- r =
- lm->realloc (conn->regions,
- sizeof (memif_region_t) * ++conn->regions_num);
+ r = ms->args.realloc (conn->regions,
+ sizeof (memif_region_t) * ++conn->regions_num);
if (r == NULL)
return MEMIF_ERR_NOMEM;
}
static inline int
-memif_init_queues (libmemif_main_t * lm, memif_connection_t * conn)
+memif_init_queues (memif_connection_t *conn)
{
int i, j;
memif_ring_t *ring;
+ memif_socket_t *ms = (memif_socket_t *) conn->args.socket;
for (i = 0; i < conn->run_args.num_s2m_rings; i++)
{
}
}
memif_queue_t *mq;
- DBG ("alloc: %p", lm->alloc);
- DBG ("size: %lu", sizeof (memif_queue_t) * conn->run_args.num_s2m_rings);
- mq =
- (memif_queue_t *) lm->alloc (sizeof (memif_queue_t) *
- conn->run_args.num_s2m_rings);
+ mq = (memif_queue_t *) ms->args.alloc (sizeof (memif_queue_t) *
+ conn->run_args.num_s2m_rings);
if (mq == NULL)
return MEMIF_ERR_NOMEM;
int x;
- memif_list_elt_t e;
+
for (x = 0; x < conn->run_args.num_s2m_rings; x++)
{
if ((mq[x].int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
return memif_syscall_error_handler (errno);
- e.key = mq[x].int_fd;
- e.data_struct = conn;
- add_list_elt (lm, &e, &lm->interrupt_list, &lm->interrupt_list_len);
mq[x].ring = memif_get_ring (conn, MEMIF_RING_S2M, x);
DBG ("RING: %p I: %d", mq[x].ring, x);
conn->tx_queues = mq;
conn->tx_queues_num = conn->run_args.num_s2m_rings;
- mq =
- (memif_queue_t *) lm->alloc (sizeof (memif_queue_t) *
- conn->run_args.num_m2s_rings);
+ mq = (memif_queue_t *) ms->args.alloc (sizeof (memif_queue_t) *
+ conn->run_args.num_m2s_rings);
if (mq == NULL)
return MEMIF_ERR_NOMEM;
{
if ((mq[x].int_fd = eventfd (0, EFD_NONBLOCK)) < 0)
return memif_syscall_error_handler (errno);
- e.key = mq[x].int_fd;
- e.data_struct = conn;
- add_list_elt (lm, &e, &lm->interrupt_list, &lm->interrupt_list_len);
mq[x].ring = memif_get_ring (conn, MEMIF_RING_M2S, x);
DBG ("RING: %p I: %d", mq[x].ring, x);
memif_init_regions_and_queues (memif_connection_t * conn)
{
memif_region_t *r;
- libmemif_main_t *lm;
-
- if (conn == NULL)
- return MEMIF_ERR_INVAL_ARG;
-
- lm = get_libmemif_main (conn->args.socket);
+ memif_socket_t *ms = (memif_socket_t *) conn->args.socket;
/* region 0. rings */
- memif_add_region (lm, conn, /* has_buffers */ 0);
+ memif_add_region (conn, /* has_buffers */ 0);
/* region 1. buffers */
- if (lm->add_external_region)
+ if (ms->add_external_region)
{
- r =
- (memif_region_t *) lm->realloc (conn->regions,
- sizeof (memif_region_t) *
- ++conn->regions_num);
+ r = (memif_region_t *) ms->args.realloc (
+ conn->regions, sizeof (memif_region_t) * ++conn->regions_num);
if (r == NULL)
return MEMIF_ERR_NOMEM;
conn->regions = r;
conn->run_args.buffer_size * (1 << conn->run_args.log2_ring_size) *
(conn->run_args.num_s2m_rings + conn->run_args.num_m2s_rings);
conn->regions[1].buffer_offset = 0;
- lm->add_external_region (&conn->regions[1].addr,
+ ms->add_external_region (&conn->regions[1].addr,
conn->regions[1].region_size,
&conn->regions[1].fd, conn->private_ctx);
conn->regions[1].is_external = 1;
}
else
{
- memif_add_region (lm, conn, 1);
+ memif_add_region (conn, 1);
}
- memif_init_queues (lm, conn);
+ memif_init_queues (conn);
return 0;
}
memif_connection_t *c = (memif_connection_t *) conn;
if (EXPECT_FALSE (c == NULL))
return MEMIF_ERR_NOCONN;
- if (EXPECT_FALSE (c->fd < 0))
+ if (EXPECT_FALSE (c->control_channel == NULL))
return MEMIF_ERR_DISCONNECTED;
if (EXPECT_FALSE (qid >= c->tx_queues_num))
return MEMIF_ERR_QID;
memif_connection_t *c = (memif_connection_t *) conn;
if (EXPECT_FALSE (c == NULL))
return MEMIF_ERR_NOCONN;
- if (EXPECT_FALSE (c->fd < 0))
+ if (EXPECT_FALSE (c->control_channel == NULL))
return MEMIF_ERR_DISCONNECTED;
uint8_t num =
(c->args.is_master) ? c->run_args.num_m2s_rings : c->
if (EXPECT_FALSE (!count_out))
return MEMIF_ERR_INVAL_ARG;
- libmemif_main_t *lm = get_libmemif_main (c->args.socket);
+ memif_socket_t *ms = (memif_socket_t *) c->args.socket;
memif_queue_t *mq = &c->tx_queues[qid];
memif_ring_t *ring = mq->ring;
memif_buffer_t *b0;
uint16_t dst_left, src_left;
uint16_t saved_count;
uint16_t saved_next_buf;
+ uint16_t slot;
memif_buffer_t *saved_b;
*count_out = 0;
/* slave resets buffer offset */
if (c->args.is_master == 0)
{
- memif_desc_t *d = &ring->desc[mq->next_buf & mask];
- if (lm->get_external_buffer_offset)
- d->offset = lm->get_external_buffer_offset (c->private_ctx);
+ memif_desc_t *d = &ring->desc[slot & mask];
+ if (ms->get_external_buffer_offset)
+ d->offset = ms->get_external_buffer_offset (c->private_ctx);
else
d->offset = d->offset - (d->offset & offset_mask);
}
memif_connection_t *c = (memif_connection_t *) conn;
if (EXPECT_FALSE (c == NULL))
return MEMIF_ERR_NOCONN;
- if (EXPECT_FALSE (c->fd < 0))
+ if (EXPECT_FALSE (c->control_channel == NULL))
return MEMIF_ERR_DISCONNECTED;
uint8_t num =
(c->args.is_master) ? c->run_args.num_s2m_rings : c->
run_args.num_m2s_rings;
if (EXPECT_FALSE (qid >= num))
return MEMIF_ERR_QID;
- libmemif_main_t *lm = get_libmemif_main (c->args.socket);
+ memif_socket_t *ms = (memif_socket_t *) c->args.socket;
memif_queue_t *mq = &c->rx_queues[qid];
memif_ring_t *ring = mq->ring;
uint16_t mask = (1 << mq->log2_ring_size) - 1;
d = &ring->desc[slot & mask];
d->region = 1;
d->length = c->run_args.buffer_size - headroom;
- if (lm->get_external_buffer_offset)
- d->offset = lm->get_external_buffer_offset (c->private_ctx);
+ if (ms->get_external_buffer_offset)
+ d->offset = ms->get_external_buffer_offset (c->private_ctx);
else
d->offset = d->offset - (d->offset & offset_mask) + headroom;
slot++;
memif_connection_t *c = (memif_connection_t *) conn;
if (EXPECT_FALSE (c == NULL))
return MEMIF_ERR_NOCONN;
- if (EXPECT_FALSE (c->fd < 0))
+ if (EXPECT_FALSE (c->control_channel == NULL))
return MEMIF_ERR_DISCONNECTED;
uint8_t num =
(c->args.is_master) ? c->run_args.num_m2s_rings : c->
memif_connection_t *c = (memif_connection_t *) conn;
if (EXPECT_FALSE (c == NULL))
return MEMIF_ERR_NOCONN;
- if (EXPECT_FALSE (c->fd < 0))
+ if (EXPECT_FALSE (c->control_channel == NULL))
return MEMIF_ERR_DISCONNECTED;
uint8_t num =
(c->args.is_master) ? c->run_args.num_s2m_rings : c->
char *buf, ssize_t buflen)
{
memif_connection_t *c = (memif_connection_t *) conn;
- libmemif_main_t *lm;
memif_socket_t *ms;
int err = MEMIF_ERR_SUCCESS, i;
ssize_t l0 = 0, l1;
return MEMIF_ERR_NOCONN;
ms = (memif_socket_t *) c->args.socket;
- lm = get_libmemif_main (ms);
l1 = strlen ((char *) c->args.interface_name);
if (l0 + l1 < buflen)
else
err = MEMIF_ERR_NOBUF_DET;
- l1 = strlen ((char *) lm->app_name);
+ l1 = strlen ((char *) ms->args.app_name);
if (l0 + l1 < buflen)
{
- md->inst_name = (uint8_t *) strcpy (buf + l0, (char *) lm->app_name);
+ md->inst_name =
+ (uint8_t *) strcpy (buf + l0, (char *) ms->args.app_name);
l0 += l1 + 1;
}
else
md->role = (c->args.is_master) ? 0 : 1;
md->mode = c->args.mode;
- l1 = strlen ((char *) ms->filename);
+ l1 = 108;
if (l0 + l1 < buflen)
{
- md->socket_filename =
- (uint8_t *) strcpy (buf + l0, (char *) ms->filename);
- l0 += l1 + 1;
+ md->socket_path = (uint8_t *) memcpy (buf + l0, ms->args.path, 108);
+ if (md->socket_path[0] == '\0')
+ {
+ md->socket_path[0] = '@';
+ }
+ l0 += l1;
}
else
err = MEMIF_ERR_NOBUF_DET;
else
err = MEMIF_ERR_NOBUF_DET;
- md->link_up_down = (c->fd > 0) ? 1 : 0;
+ /* This is not completely true, clients should relay on
+ * on_connect/on_disconnect callbacks */
+ md->link_up_down = (c->control_channel != NULL) ? 1 : 0;
return err; /* 0 */
}
*efd = -1;
if (c == NULL)
return MEMIF_ERR_NOCONN;
- if (c->fd < 0)
+ if (c->control_channel == NULL)
return MEMIF_ERR_DISCONNECTED;
num =
return MEMIF_ERR_SUCCESS;
}
-
-int
-memif_cleanup ()
-{
- libmemif_main_t *lm = &libmemif_main;
- int err;
-
- err = memif_delete_socket ((memif_socket_handle_t *) & lm->default_socket);
- if (err != MEMIF_ERR_SUCCESS)
- return err;
-
- if (lm->control_list)
- lm->free (lm->control_list);
- lm->control_list = NULL;
- if (lm->interrupt_list)
- lm->free (lm->interrupt_list);
- lm->interrupt_list = NULL;
- if (lm->socket_list)
- lm->free (lm->socket_list);
- lm->socket_list = NULL;
- if (lm->pending_list)
- lm->free (lm->pending_list);
- lm->pending_list = NULL;
- if (lm->poll_cancel_fd != -1)
- close (lm->poll_cancel_fd);
-
- return MEMIF_ERR_SUCCESS; /* 0 */
-}
Code Review / vpp.git / blobdiff