]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) | |
8 | * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de) | |
9 | */ | |
10 | #include <linux/errno.h> | |
11 | #include <linux/types.h> | |
12 | #include <linux/socket.h> | |
13 | #include <linux/in.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/sched.h> | |
16 | #include <linux/timer.h> | |
17 | #include <linux/string.h> | |
18 | #include <linux/sockios.h> | |
19 | #include <linux/net.h> | |
20 | #include <net/ax25.h> | |
21 | #include <linux/inet.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/skbuff.h> | |
24 | #include <net/sock.h> | |
25 | #include <net/ip.h> /* For ip_rcv */ | |
c752f073 | 26 | #include <net/tcp_states.h> |
1da177e4 LT |
27 | #include <asm/uaccess.h> |
28 | #include <asm/system.h> | |
29 | #include <linux/fcntl.h> | |
30 | #include <linux/mm.h> | |
31 | #include <linux/interrupt.h> | |
32 | ||
33 | /* | |
34 | * State machine for state 1, Awaiting Connection State. | |
35 | * The handling of the timer(s) is in file ax25_ds_timer.c. | |
36 | * Handling of state 0 and connection release is in ax25.c. | |
37 | */ | |
38 | static int ax25_ds_state1_machine(ax25_cb *ax25, struct sk_buff *skb, int frametype, int pf, int type) | |
39 | { | |
40 | switch (frametype) { | |
41 | case AX25_SABM: | |
42 | ax25->modulus = AX25_MODULUS; | |
43 | ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW]; | |
44 | ax25_send_control(ax25, AX25_UA, pf, AX25_RESPONSE); | |
45 | break; | |
46 | ||
47 | case AX25_SABME: | |
48 | ax25->modulus = AX25_EMODULUS; | |
49 | ax25->window = ax25->ax25_dev->values[AX25_VALUES_EWINDOW]; | |
50 | ax25_send_control(ax25, AX25_UA, pf, AX25_RESPONSE); | |
51 | break; | |
52 | ||
53 | case AX25_DISC: | |
54 | ax25_send_control(ax25, AX25_DM, pf, AX25_RESPONSE); | |
55 | break; | |
56 | ||
57 | case AX25_UA: | |
58 | ax25_calculate_rtt(ax25); | |
59 | ax25_stop_t1timer(ax25); | |
60 | ax25_start_t3timer(ax25); | |
61 | ax25_start_idletimer(ax25); | |
62 | ax25->vs = 0; | |
63 | ax25->va = 0; | |
64 | ax25->vr = 0; | |
65 | ax25->state = AX25_STATE_3; | |
66 | ax25->n2count = 0; | |
67 | if (ax25->sk != NULL) { | |
68 | bh_lock_sock(ax25->sk); | |
69 | ax25->sk->sk_state = TCP_ESTABLISHED; | |
70 | /* | |
71 | * For WAIT_SABM connections we will produce an accept | |
72 | * ready socket here | |
73 | */ | |
74 | if (!sock_flag(ax25->sk, SOCK_DEAD)) | |
75 | ax25->sk->sk_state_change(ax25->sk); | |
76 | bh_unlock_sock(ax25->sk); | |
77 | } | |
78 | ax25_dama_on(ax25); | |
79 | ||
80 |