1328970deSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 298211489SZach Brown /* -*- mode: c; c-basic-offset: 8; -*- 398211489SZach Brown * vim: noexpandtab sw=8 ts=8 sts=0: 498211489SZach Brown * 598211489SZach Brown * tcp.h 698211489SZach Brown * 798211489SZach Brown * Function prototypes 898211489SZach Brown * 998211489SZach Brown * Copyright (C) 2004 Oracle. All rights reserved. 1098211489SZach Brown */ 1198211489SZach Brown 1298211489SZach Brown #ifndef O2CLUSTER_TCP_H 1398211489SZach Brown #define O2CLUSTER_TCP_H 1498211489SZach Brown 1598211489SZach Brown #include <linux/socket.h> 1698211489SZach Brown #ifdef __KERNEL__ 1798211489SZach Brown #include <net/sock.h> 1898211489SZach Brown #include <linux/tcp.h> 1998211489SZach Brown #else 2098211489SZach Brown #include <sys/socket.h> 2198211489SZach Brown #endif 2298211489SZach Brown #include <linux/inet.h> 2398211489SZach Brown #include <linux/in.h> 2498211489SZach Brown 2598211489SZach Brown struct o2net_msg 2698211489SZach Brown { 2798211489SZach Brown __be16 magic; 2898211489SZach Brown __be16 data_len; 2998211489SZach Brown __be16 msg_type; 3098211489SZach Brown __be16 pad1; 3198211489SZach Brown __be32 sys_status; 3298211489SZach Brown __be32 status; 3398211489SZach Brown __be32 key; 3498211489SZach Brown __be32 msg_num; 3598211489SZach Brown __u8 buf[0]; 3698211489SZach Brown }; 3798211489SZach Brown 38d74c9803SKurt Hackel typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data, 39d74c9803SKurt Hackel void **ret_data); 40d74c9803SKurt Hackel typedef void (o2net_post_msg_handler_func)(int status, void *data, 41d74c9803SKurt Hackel void *ret_data); 4298211489SZach Brown 4398211489SZach Brown #define O2NET_MAX_PAYLOAD_BYTES (4096 - sizeof(struct o2net_msg)) 4498211489SZach Brown 45b5dd8030SJeff Mahoney /* same as hb delay, we're waiting for another node to recognize our hb */ 46b5dd8030SJeff Mahoney #define O2NET_RECONNECT_DELAY_MS_DEFAULT 2000 47b5dd8030SJeff Mahoney 4817104683SSunil Mushran #define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000 4917104683SSunil Mushran #define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000 50b5dd8030SJeff Mahoney 518e9801dfSJunxiao Bi #define O2NET_TCP_USER_TIMEOUT 0x7fffffff 52b5dd8030SJeff Mahoney 5398211489SZach Brown /* TODO: figure this out.... */ 5498211489SZach Brown static inline int o2net_link_down(int err, struct socket *sock) 5598211489SZach Brown { 5698211489SZach Brown if (sock) { 5798211489SZach Brown if (sock->sk->sk_state != TCP_ESTABLISHED && 5898211489SZach Brown sock->sk->sk_state != TCP_CLOSE_WAIT) 5998211489SZach Brown return 1; 6098211489SZach Brown } 6198211489SZach Brown 6298211489SZach Brown if (err >= 0) 6398211489SZach Brown return 0; 6498211489SZach Brown switch (err) { 6598211489SZach Brown /* ????????????????????????? */ 6698211489SZach Brown case -ERESTARTSYS: 6798211489SZach Brown case -EBADF: 6898211489SZach Brown /* When the server has died, an ICMP port unreachable 6998211489SZach Brown * message prompts ECONNREFUSED. */ 7098211489SZach Brown case -ECONNREFUSED: 7198211489SZach Brown case -ENOTCONN: 7298211489SZach Brown case -ECONNRESET: 7398211489SZach Brown case -EPIPE: 7498211489SZach Brown return 1; 7598211489SZach Brown } 7698211489SZach Brown return 0; 7798211489SZach Brown } 7898211489SZach Brown 7998211489SZach Brown enum { 8098211489SZach Brown O2NET_DRIVER_UNINITED, 8198211489SZach Brown O2NET_DRIVER_READY, 8298211489SZach Brown }; 8398211489SZach Brown 8498211489SZach Brown int o2net_send_message(u32 msg_type, u32 key, void *data, u32 len, 8598211489SZach Brown u8 target_node, int *status); 8698211489SZach Brown int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *vec, 8798211489SZach Brown size_t veclen, u8 target_node, int *status); 8898211489SZach Brown 8998211489SZach Brown int o2net_register_handler(u32 msg_type, u32 key, u32 max_len, 9098211489SZach Brown o2net_msg_handler_func *func, void *data, 91d74c9803SKurt Hackel o2net_post_msg_handler_func *post_func, 9298211489SZach Brown struct list_head *unreg_list); 9398211489SZach Brown void o2net_unregister_handler_list(struct list_head *list); 9498211489SZach Brown 953ba169ccSSunil Mushran void o2net_fill_node_map(unsigned long *map, unsigned bytes); 963ba169ccSSunil Mushran 9798211489SZach Brown struct o2nm_node; 9898211489SZach Brown int o2net_register_hb_callbacks(void); 9998211489SZach Brown void o2net_unregister_hb_callbacks(void); 10098211489SZach Brown int o2net_start_listening(struct o2nm_node *node); 10198211489SZach Brown void o2net_stop_listening(struct o2nm_node *node); 10298211489SZach Brown void o2net_disconnect_node(struct o2nm_node *node); 103828ae6afSAndrew Beekhof int o2net_num_connected_peers(void); 10498211489SZach Brown 10598211489SZach Brown int o2net_init(void); 10698211489SZach Brown void o2net_exit(void); 10798211489SZach Brown 1082309e9e0SSunil Mushran struct o2net_send_tracking; 1092309e9e0SSunil Mushran struct o2net_sock_container; 1102309e9e0SSunil Mushran 1112309e9e0SSunil Mushran #ifdef CONFIG_DEBUG_FS 1122309e9e0SSunil Mushran int o2net_debugfs_init(void); 1132309e9e0SSunil Mushran void o2net_debugfs_exit(void); 1142309e9e0SSunil Mushran void o2net_debug_add_nst(struct o2net_send_tracking *nst); 1152309e9e0SSunil Mushran void o2net_debug_del_nst(struct o2net_send_tracking *nst); 1162309e9e0SSunil Mushran void o2net_debug_add_sc(struct o2net_sock_container *sc); 1172309e9e0SSunil Mushran void o2net_debug_del_sc(struct o2net_sock_container *sc); 1182309e9e0SSunil Mushran #else 119271d772dSSunil Mushran static inline int o2net_debugfs_init(void) 1202309e9e0SSunil Mushran { 1212309e9e0SSunil Mushran return 0; 1222309e9e0SSunil Mushran } 123271d772dSSunil Mushran static inline void o2net_debugfs_exit(void) 1242309e9e0SSunil Mushran { 1252309e9e0SSunil Mushran } 126271d772dSSunil Mushran static inline void o2net_debug_add_nst(struct o2net_send_tracking *nst) 1272309e9e0SSunil Mushran { 1282309e9e0SSunil Mushran } 129271d772dSSunil Mushran static inline void o2net_debug_del_nst(struct o2net_send_tracking *nst) 1302309e9e0SSunil Mushran { 1312309e9e0SSunil Mushran } 132271d772dSSunil Mushran static inline void o2net_debug_add_sc(struct o2net_sock_container *sc) 1332309e9e0SSunil Mushran { 1342309e9e0SSunil Mushran } 135271d772dSSunil Mushran static inline void o2net_debug_del_sc(struct o2net_sock_container *sc) 1362309e9e0SSunil Mushran { 1372309e9e0SSunil Mushran } 1382309e9e0SSunil Mushran #endif /* CONFIG_DEBUG_FS */ 1392309e9e0SSunil Mushran 14098211489SZach Brown #endif /* O2CLUSTER_TCP_H */ 141