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137 lines
3.3 KiB
137 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* tcp.h |
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* |
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* Function prototypes |
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* |
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* Copyright (C) 2004 Oracle. All rights reserved. |
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*/ |
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#ifndef O2CLUSTER_TCP_H |
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#define O2CLUSTER_TCP_H |
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#include <linux/socket.h> |
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#ifdef __KERNEL__ |
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#include <net/sock.h> |
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#include <linux/tcp.h> |
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#else |
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#include <sys/socket.h> |
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#endif |
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#include <linux/inet.h> |
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#include <linux/in.h> |
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struct o2net_msg |
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{ |
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__be16 magic; |
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__be16 data_len; |
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__be16 msg_type; |
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__be16 pad1; |
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__be32 sys_status; |
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__be32 status; |
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__be32 key; |
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__be32 msg_num; |
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__u8 buf[]; |
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}; |
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typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data, |
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void **ret_data); |
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typedef void (o2net_post_msg_handler_func)(int status, void *data, |
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void *ret_data); |
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#define O2NET_MAX_PAYLOAD_BYTES (4096 - sizeof(struct o2net_msg)) |
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/* same as hb delay, we're waiting for another node to recognize our hb */ |
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#define O2NET_RECONNECT_DELAY_MS_DEFAULT 2000 |
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#define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000 |
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#define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000 |
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#define O2NET_TCP_USER_TIMEOUT 0x7fffffff |
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/* TODO: figure this out.... */ |
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static inline int o2net_link_down(int err, struct socket *sock) |
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{ |
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if (sock) { |
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if (sock->sk->sk_state != TCP_ESTABLISHED && |
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sock->sk->sk_state != TCP_CLOSE_WAIT) |
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return 1; |
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} |
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if (err >= 0) |
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return 0; |
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switch (err) { |
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/* ????????????????????????? */ |
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case -ERESTARTSYS: |
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case -EBADF: |
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/* When the server has died, an ICMP port unreachable |
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* message prompts ECONNREFUSED. */ |
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case -ECONNREFUSED: |
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case -ENOTCONN: |
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case -ECONNRESET: |
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case -EPIPE: |
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return 1; |
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} |
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return 0; |
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} |
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enum { |
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O2NET_DRIVER_UNINITED, |
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O2NET_DRIVER_READY, |
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}; |
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int o2net_send_message(u32 msg_type, u32 key, void *data, u32 len, |
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u8 target_node, int *status); |
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int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *vec, |
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size_t veclen, u8 target_node, int *status); |
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int o2net_register_handler(u32 msg_type, u32 key, u32 max_len, |
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o2net_msg_handler_func *func, void *data, |
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o2net_post_msg_handler_func *post_func, |
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struct list_head *unreg_list); |
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void o2net_unregister_handler_list(struct list_head *list); |
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void o2net_fill_node_map(unsigned long *map, unsigned bytes); |
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struct o2nm_node; |
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int o2net_register_hb_callbacks(void); |
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void o2net_unregister_hb_callbacks(void); |
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int o2net_start_listening(struct o2nm_node *node); |
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void o2net_stop_listening(struct o2nm_node *node); |
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void o2net_disconnect_node(struct o2nm_node *node); |
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int o2net_num_connected_peers(void); |
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int o2net_init(void); |
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void o2net_exit(void); |
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struct o2net_send_tracking; |
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struct o2net_sock_container; |
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#ifdef CONFIG_DEBUG_FS |
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void o2net_debugfs_init(void); |
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void o2net_debugfs_exit(void); |
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void o2net_debug_add_nst(struct o2net_send_tracking *nst); |
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void o2net_debug_del_nst(struct o2net_send_tracking *nst); |
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void o2net_debug_add_sc(struct o2net_sock_container *sc); |
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void o2net_debug_del_sc(struct o2net_sock_container *sc); |
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#else |
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static inline void o2net_debugfs_init(void) |
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{ |
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} |
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static inline void o2net_debugfs_exit(void) |
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{ |
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} |
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static inline void o2net_debug_add_nst(struct o2net_send_tracking *nst) |
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{ |
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} |
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static inline void o2net_debug_del_nst(struct o2net_send_tracking *nst) |
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{ |
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} |
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static inline void o2net_debug_add_sc(struct o2net_sock_container *sc) |
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{ |
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} |
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static inline void o2net_debug_del_sc(struct o2net_sock_container *sc) |
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{ |
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} |
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#endif /* CONFIG_DEBUG_FS */ |
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#endif /* O2CLUSTER_TCP_H */
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