Loading...
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * tcp.h
6 *
7 * Function prototypes
8 *
9 * Copyright (C) 2004 Oracle. All rights reserved.
10 */
11
12#ifndef O2CLUSTER_TCP_H
13#define O2CLUSTER_TCP_H
14
15#include <linux/socket.h>
16#ifdef __KERNEL__
17#include <net/sock.h>
18#include <linux/tcp.h>
19#else
20#include <sys/socket.h>
21#endif
22#include <linux/inet.h>
23#include <linux/in.h>
24
25struct o2net_msg
26{
27 __be16 magic;
28 __be16 data_len;
29 __be16 msg_type;
30 __be16 pad1;
31 __be32 sys_status;
32 __be32 status;
33 __be32 key;
34 __be32 msg_num;
35 __u8 buf[0];
36};
37
38typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data,
39 void **ret_data);
40typedef void (o2net_post_msg_handler_func)(int status, void *data,
41 void *ret_data);
42
43#define O2NET_MAX_PAYLOAD_BYTES (4096 - sizeof(struct o2net_msg))
44
45/* same as hb delay, we're waiting for another node to recognize our hb */
46#define O2NET_RECONNECT_DELAY_MS_DEFAULT 2000
47
48#define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000
49#define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000
50
51#define O2NET_TCP_USER_TIMEOUT 0x7fffffff
52
53/* TODO: figure this out.... */
54static inline int o2net_link_down(int err, struct socket *sock)
55{
56 if (sock) {
57 if (sock->sk->sk_state != TCP_ESTABLISHED &&
58 sock->sk->sk_state != TCP_CLOSE_WAIT)
59 return 1;
60 }
61
62 if (err >= 0)
63 return 0;
64 switch (err) {
65 /* ????????????????????????? */
66 case -ERESTARTSYS:
67 case -EBADF:
68 /* When the server has died, an ICMP port unreachable
69 * message prompts ECONNREFUSED. */
70 case -ECONNREFUSED:
71 case -ENOTCONN:
72 case -ECONNRESET:
73 case -EPIPE:
74 return 1;
75 }
76 return 0;
77}
78
79enum {
80 O2NET_DRIVER_UNINITED,
81 O2NET_DRIVER_READY,
82};
83
84int o2net_send_message(u32 msg_type, u32 key, void *data, u32 len,
85 u8 target_node, int *status);
86int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *vec,
87 size_t veclen, u8 target_node, int *status);
88
89int o2net_register_handler(u32 msg_type, u32 key, u32 max_len,
90 o2net_msg_handler_func *func, void *data,
91 o2net_post_msg_handler_func *post_func,
92 struct list_head *unreg_list);
93void o2net_unregister_handler_list(struct list_head *list);
94
95void o2net_fill_node_map(unsigned long *map, unsigned bytes);
96
97struct o2nm_node;
98int o2net_register_hb_callbacks(void);
99void o2net_unregister_hb_callbacks(void);
100int o2net_start_listening(struct o2nm_node *node);
101void o2net_stop_listening(struct o2nm_node *node);
102void o2net_disconnect_node(struct o2nm_node *node);
103int o2net_num_connected_peers(void);
104
105int o2net_init(void);
106void o2net_exit(void);
107
108struct o2net_send_tracking;
109struct o2net_sock_container;
110
111#ifdef CONFIG_DEBUG_FS
112void o2net_debugfs_init(void);
113void o2net_debugfs_exit(void);
114void o2net_debug_add_nst(struct o2net_send_tracking *nst);
115void o2net_debug_del_nst(struct o2net_send_tracking *nst);
116void o2net_debug_add_sc(struct o2net_sock_container *sc);
117void o2net_debug_del_sc(struct o2net_sock_container *sc);
118#else
119static inline void o2net_debugfs_init(void)
120{
121}
122static inline void o2net_debugfs_exit(void)
123{
124}
125static inline void o2net_debug_add_nst(struct o2net_send_tracking *nst)
126{
127}
128static inline void o2net_debug_del_nst(struct o2net_send_tracking *nst)
129{
130}
131static inline void o2net_debug_add_sc(struct o2net_sock_container *sc)
132{
133}
134static inline void o2net_debug_del_sc(struct o2net_sock_container *sc)
135{
136}
137#endif /* CONFIG_DEBUG_FS */
138
139#endif /* O2CLUSTER_TCP_H */
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * tcp.h
6 *
7 * Function prototypes
8 *
9 * Copyright (C) 2004 Oracle. All rights reserved.
10 */
11
12#ifndef O2CLUSTER_TCP_H
13#define O2CLUSTER_TCP_H
14
15#include <linux/socket.h>
16#ifdef __KERNEL__
17#include <net/sock.h>
18#include <linux/tcp.h>
19#else
20#include <sys/socket.h>
21#endif
22#include <linux/inet.h>
23#include <linux/in.h>
24
25struct o2net_msg
26{
27 __be16 magic;
28 __be16 data_len;
29 __be16 msg_type;
30 __be16 pad1;
31 __be32 sys_status;
32 __be32 status;
33 __be32 key;
34 __be32 msg_num;
35 __u8 buf[0];
36};
37
38typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data,
39 void **ret_data);
40typedef void (o2net_post_msg_handler_func)(int status, void *data,
41 void *ret_data);
42
43#define O2NET_MAX_PAYLOAD_BYTES (4096 - sizeof(struct o2net_msg))
44
45/* same as hb delay, we're waiting for another node to recognize our hb */
46#define O2NET_RECONNECT_DELAY_MS_DEFAULT 2000
47
48#define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000
49#define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000
50
51#define O2NET_TCP_USER_TIMEOUT 0x7fffffff
52
53/* TODO: figure this out.... */
54static inline int o2net_link_down(int err, struct socket *sock)
55{
56 if (sock) {
57 if (sock->sk->sk_state != TCP_ESTABLISHED &&
58 sock->sk->sk_state != TCP_CLOSE_WAIT)
59 return 1;
60 }
61
62 if (err >= 0)
63 return 0;
64 switch (err) {
65 /* ????????????????????????? */
66 case -ERESTARTSYS:
67 case -EBADF:
68 /* When the server has died, an ICMP port unreachable
69 * message prompts ECONNREFUSED. */
70 case -ECONNREFUSED:
71 case -ENOTCONN:
72 case -ECONNRESET:
73 case -EPIPE:
74 return 1;
75 }
76 return 0;
77}
78
79enum {
80 O2NET_DRIVER_UNINITED,
81 O2NET_DRIVER_READY,
82};
83
84int o2net_send_message(u32 msg_type, u32 key, void *data, u32 len,
85 u8 target_node, int *status);
86int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *vec,
87 size_t veclen, u8 target_node, int *status);
88
89int o2net_register_handler(u32 msg_type, u32 key, u32 max_len,
90 o2net_msg_handler_func *func, void *data,
91 o2net_post_msg_handler_func *post_func,
92 struct list_head *unreg_list);
93void o2net_unregister_handler_list(struct list_head *list);
94
95void o2net_fill_node_map(unsigned long *map, unsigned bytes);
96
97struct o2nm_node;
98int o2net_register_hb_callbacks(void);
99void o2net_unregister_hb_callbacks(void);
100int o2net_start_listening(struct o2nm_node *node);
101void o2net_stop_listening(struct o2nm_node *node);
102void o2net_disconnect_node(struct o2nm_node *node);
103int o2net_num_connected_peers(void);
104
105int o2net_init(void);
106void o2net_exit(void);
107
108struct o2net_send_tracking;
109struct o2net_sock_container;
110
111#ifdef CONFIG_DEBUG_FS
112void o2net_debugfs_init(void);
113void o2net_debugfs_exit(void);
114void o2net_debug_add_nst(struct o2net_send_tracking *nst);
115void o2net_debug_del_nst(struct o2net_send_tracking *nst);
116void o2net_debug_add_sc(struct o2net_sock_container *sc);
117void o2net_debug_del_sc(struct o2net_sock_container *sc);
118#else
119static inline void o2net_debugfs_init(void)
120{
121}
122static inline void o2net_debugfs_exit(void)
123{
124}
125static inline void o2net_debug_add_nst(struct o2net_send_tracking *nst)
126{
127}
128static inline void o2net_debug_del_nst(struct o2net_send_tracking *nst)
129{
130}
131static inline void o2net_debug_add_sc(struct o2net_sock_container *sc)
132{
133}
134static inline void o2net_debug_del_sc(struct o2net_sock_container *sc)
135{
136}
137#endif /* CONFIG_DEBUG_FS */
138
139#endif /* O2CLUSTER_TCP_H */