diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ipcpd/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | src/ipcpd/flow.c | 83 | ||||
| -rw-r--r-- | src/ipcpd/flow.h | 66 |
3 files changed, 150 insertions, 0 deletions
diff --git a/src/ipcpd/CMakeLists.txt b/src/ipcpd/CMakeLists.txt index bcb5b986..27d41801 100644 --- a/src/ipcpd/CMakeLists.txt +++ b/src/ipcpd/CMakeLists.txt @@ -9,6 +9,7 @@ set(SOURCE_FILES main.c pci.c shm_pci.c + flow.c ) add_executable (ipcpd ${SOURCE_FILES}) diff --git a/src/ipcpd/flow.c b/src/ipcpd/flow.c new file mode 100644 index 00000000..395a0a0d --- /dev/null +++ b/src/ipcpd/flow.c @@ -0,0 +1,83 @@ +/* + * Ouroboros - Copyright (C) 2016 + * + * Flows + * + * Dimitri Staessens <dimitri.staessens@intec.ugent.be> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "flow.h" +#include <malloc.h> + +#define OUROBOROS_PREFIX "ipcpd/flow" + +#include <ouroboros/logs.h> + +flow_t * flow_create(port_id_t port_id) +{ + flow_t * flow = malloc(sizeof *flow); + flow->port_id = port_id; + flow->flags = FLOW_O_DEFAULT; + flow->state = FLOW_INIT; + +#ifdef FLOW_MT_SAFE + pthread_mutex_init(&flow->lock, NULL); +#endif + return flow; +} + +void flow_destroy(flow_t * flow) +{ + free(flow); +} + +int flow_set_opts(flow_t * flow, uint16_t opts) +{ + if (flow == NULL) { + LOG_ERR("Non-existing flow."); + return -1; + } + +#ifdef FLOW_MT_SAFE + pthread_mutex_lock(&flow->lock); +#endif + + if ((opts & FLOW_O_ACCMODE) == FLOW_O_ACCMODE) { +#ifdef FLOW_MT_SAFE + pthread_mutex_unlock(&flow->lock); +#endif + LOG_WARN("Invalid flow options. Setting default."); + opts = FLOW_O_DEFAULT; + } + + flow->flags = opts; + +#ifdef FLOW_MT_SAFE + pthread_mutex_unlock(&flow->lock); +#endif + return 0; +} + +uint16_t flow_get_opts(const flow_t * flow) +{ + if (flow == NULL) { + LOG_ERR("Non-existing flow."); + return FLOW_O_INVALID; + } + + return flow->flags; +} diff --git a/src/ipcpd/flow.h b/src/ipcpd/flow.h new file mode 100644 index 00000000..83f4076d --- /dev/null +++ b/src/ipcpd/flow.h @@ -0,0 +1,66 @@ +/* + * Ouroboros - Copyright (C) 2016 + * + * Flows + * + * Dimitri Staessens <dimitri.staessens@intec.ugent.be> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef IPCPD_FLOW_H +#define IPCPD_FLOW_H + +#include <ouroboros/common.h> + +#ifdef FLOW_MT_SAFE +#include <pthread.h> +#endif + +/* same values as fcntl.h */ +#define FLOW_O_RDONLY 00000000 +#define FLOW_O_WRONLY 00000001 +#define FLOW_O_RDWR 00000002 +#define FLOW_O_ACCMODE 00000003 + +#define FLOW_O_NONBLOCK 00004000 +#define FLOW_O_DEFAULT 00000002 + +#define FLOW_O_INVALID 00037777 + +typedef long port_id_t; + +enum flow_state { + FLOW_INIT = 0, + FLOW_ALLOCATED, + FLOW_PENDING +}; + +typedef struct flow { + port_id_t port_id; + uint16_t flags; + uint8_t state; +#ifdef FLOW_MT_SAFE + pthread_mutex_t lock; +#endif +} flow_t; + +flow_t * flow_create(port_id_t port_id); +void flow_destroy(flow_t * flow); + +int flow_set_opts(flow_t * flow, uint16_t opts); +uint16_t flow_get_opts(const flow_t * flow); + +#endif /* IPCPD_FLOW_H */ |