153 lines
3.9 KiB
C
153 lines
3.9 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
|
|
* vim: noexpandtab sw=8 ts=8 sts=0:
|
|
*
|
|
* tcp.h
|
|
*
|
|
* Function prototypes
|
|
*
|
|
* Copyright (C) 2004 Oracle. All rights reserved.
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 021110-1307, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef O2CLUSTER_TCP_H
|
|
#define O2CLUSTER_TCP_H
|
|
|
|
#include <linux/socket.h>
|
|
#ifdef __KERNEL__
|
|
#include <net/sock.h>
|
|
#include <linux/tcp.h>
|
|
#else
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#include <linux/inet.h>
|
|
#include <linux/in.h>
|
|
|
|
struct o2net_msg
|
|
{
|
|
__be16 magic;
|
|
__be16 data_len;
|
|
__be16 msg_type;
|
|
__be16 pad1;
|
|
__be32 sys_status;
|
|
__be32 status;
|
|
__be32 key;
|
|
__be32 msg_num;
|
|
__u8 buf[0];
|
|
};
|
|
|
|
typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data,
|
|
void **ret_data);
|
|
typedef void (o2net_post_msg_handler_func)(int status, void *data,
|
|
void *ret_data);
|
|
|
|
#define O2NET_MAX_PAYLOAD_BYTES (4096 - sizeof(struct o2net_msg))
|
|
|
|
/* same as hb delay, we're waiting for another node to recognize our hb */
|
|
#define O2NET_RECONNECT_DELAY_MS_DEFAULT 2000
|
|
|
|
#define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000
|
|
#define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000
|
|
|
|
|
|
/* TODO: figure this out.... */
|
|
static inline int o2net_link_down(int err, struct socket *sock)
|
|
{
|
|
if (sock) {
|
|
if (sock->sk->sk_state != TCP_ESTABLISHED &&
|
|
sock->sk->sk_state != TCP_CLOSE_WAIT)
|
|
return 1;
|
|
}
|
|
|
|
if (err >= 0)
|
|
return 0;
|
|
switch (err) {
|
|
/* ????????????????????????? */
|
|
case -ERESTARTSYS:
|
|
case -EBADF:
|
|
/* When the server has died, an ICMP port unreachable
|
|
* message prompts ECONNREFUSED. */
|
|
case -ECONNREFUSED:
|
|
case -ENOTCONN:
|
|
case -ECONNRESET:
|
|
case -EPIPE:
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
enum {
|
|
O2NET_DRIVER_UNINITED,
|
|
O2NET_DRIVER_READY,
|
|
};
|
|
|
|
int o2net_send_message(u32 msg_type, u32 key, void *data, u32 len,
|
|
u8 target_node, int *status);
|
|
int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *vec,
|
|
size_t veclen, u8 target_node, int *status);
|
|
|
|
int o2net_register_handler(u32 msg_type, u32 key, u32 max_len,
|
|
o2net_msg_handler_func *func, void *data,
|
|
o2net_post_msg_handler_func *post_func,
|
|
struct list_head *unreg_list);
|
|
void o2net_unregister_handler_list(struct list_head *list);
|
|
|
|
struct o2nm_node;
|
|
int o2net_register_hb_callbacks(void);
|
|
void o2net_unregister_hb_callbacks(void);
|
|
int o2net_start_listening(struct o2nm_node *node);
|
|
void o2net_stop_listening(struct o2nm_node *node);
|
|
void o2net_disconnect_node(struct o2nm_node *node);
|
|
int o2net_num_connected_peers(void);
|
|
|
|
int o2net_init(void);
|
|
void o2net_exit(void);
|
|
|
|
struct o2net_send_tracking;
|
|
struct o2net_sock_container;
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
int o2net_debugfs_init(void);
|
|
void o2net_debugfs_exit(void);
|
|
void o2net_debug_add_nst(struct o2net_send_tracking *nst);
|
|
void o2net_debug_del_nst(struct o2net_send_tracking *nst);
|
|
void o2net_debug_add_sc(struct o2net_sock_container *sc);
|
|
void o2net_debug_del_sc(struct o2net_sock_container *sc);
|
|
#else
|
|
static inline int o2net_debugfs_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void o2net_debugfs_exit(void)
|
|
{
|
|
}
|
|
static inline void o2net_debug_add_nst(struct o2net_send_tracking *nst)
|
|
{
|
|
}
|
|
static inline void o2net_debug_del_nst(struct o2net_send_tracking *nst)
|
|
{
|
|
}
|
|
static inline void o2net_debug_add_sc(struct o2net_sock_container *sc)
|
|
{
|
|
}
|
|
static inline void o2net_debug_del_sc(struct o2net_sock_container *sc)
|
|
{
|
|
}
|
|
#endif /* CONFIG_DEBUG_FS */
|
|
|
|
#endif /* O2CLUSTER_TCP_H */
|