/* -*- 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 #ifdef __KERNEL__ #include #include #else #include #endif #include #include 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 #define O2NET_TCP_USER_TIMEOUT 0x7fffffff /* 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); void o2net_fill_node_map(unsigned long *map, unsigned bytes); 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 */ h>Lines