projects / mirror_ubuntu-jammy-kernel.git / blame
| 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> | |
| 1da177e4 LT |
15 | #include <linux/timer.h> |
| 16 | #include <linux/string.h> | |
| 17 | #include <linux/sockios.h> | |
| 18 | #include <linux/net.h> | |
| 19 | #include <net/ax25.h> | |
| 20 | #include <linux/inet.h> | |
| 21 | #include <linux/netdevice.h> | |
| 22 | #include <linux/skbuff.h> | |
| 23 | #include <net/sock.h> | |
| c752f073 | 24 | #include <net/tcp_states.h> |
| 1da177e4 LT |
25 | #include <asm/uaccess.h> |
| 26 | #include <asm/system.h> | |
| 27 | #include <linux/fcntl.h> | |
| 28 | #include <linux/mm.h> | |
| 29 | #include <linux/interrupt.h> | |
| 30 | ||
| 31 | /* | |
| 32 | * State machine for state 1, Awaiting Connection State. | |
| 33 | * The handling of the timer(s) is in file ax25_ds_timer.c. | |
| 34 | * Handling of state 0 and connection release is in ax25.c. | |
| 35 | */ | |
| 36 | static int ax25_ds_state1_machine(ax25_cb *ax25, struct sk_buff *skb, int frametype, int pf, int type) | |
| 37 | { | |
| 38 | switch (frametype) { | |
| 39 | case AX25_SABM: | |
| 40 | ax25->modulus = AX25_MODULUS; | |
| 41 | ax25->window = ax25->ax25_dev->values[AX25_VALUES_WINDOW]; | |
| 42 | ax25_send_control(ax25, AX25_UA, pf, AX25_RESPONSE); | |
| 43 | break; | |
| 44 | ||
| 45 | case AX25_SABME: | |
| 46 | ax25->modulus = AX25_EMODULUS; | |
| 47 | ax25->window = ax25->ax25_dev->values[AX25_VALUES_EWINDOW]; | |
| 48 | ax25_send_control(ax25, AX25_UA, pf, AX25_RESPONSE); | |
| 49 | break; | |
| 50 | ||
| 51 | case AX25_DISC: | |
| 52 | ax25_send_control(ax25, AX25_DM, pf, AX25_RESPONSE); | |
| 53 | break; | |
| 54 | ||
| 55 | case AX25_UA: | |
| 56 | ax25_calculate_rtt(ax25); | |
| 57 | ax25_stop_t1timer(ax25); | |
| 58 | ax25_start_t3timer(ax25); | |
| 59 | ax25_start_idletimer(ax25); | |
| 60 | ax25->vs = 0; | |
| 61 | ax25->va = 0; | |
| 62 | ax25->vr = 0; | |
| 63 | ax25->state = AX25_STATE_3; | |
| 64 | ax25->n2count = 0; | |
| 65 | if (ax25->sk != NULL) { | |
| 66 | bh_lock_sock(ax25->sk); | |
| 67 | ax25->sk->sk_state = TCP_ESTABLISHED; | |
| 68 | /* | |
| 69 | * For WAIT_SABM connections we will produce an accept | |
| 70 | * ready socket here | |
| 71 | */ | |
| 72 | if (!sock_flag(ax25->sk, SOCK_DEAD)) | |
| 73 | ax25->sk->sk_state_change(ax25->sk); | |
| 74 | bh_unlock_sock(ax25->sk); | |
| 75 | } | |
| 76 | ax25_dama_on(ax25); | |
| 77 | ||
| 78 |