Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) Joerg Reuter DL1BKE (jreuter@yaina.de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/sockios.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <net/tcp_states.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <net/ax25.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/inet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static void ax25_ds_timeout(struct timer_list *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32)  *	Add DAMA slave timeout timer to timer list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33)  *	Unlike the connection based timers the timeout function gets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  *	triggered every second. Please note that NET_AX25_DAMA_SLAVE_TIMEOUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  *	(aka /proc/sys/net/ax25/{dev}/dama_slave_timeout) is still in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36)  *	1/10th of a second.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) void ax25_ds_setup_timer(ax25_dev *ax25_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	timer_setup(&ax25_dev->dama.slave_timer, ax25_ds_timeout, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) void ax25_ds_del_timer(ax25_dev *ax25_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	if (ax25_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		del_timer(&ax25_dev->dama.slave_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) void ax25_ds_set_timer(ax25_dev *ax25_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	if (ax25_dev == NULL)		/* paranoia */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	ax25_dev->dama.slave_timeout =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		msecs_to_jiffies(ax25_dev->values[AX25_VALUES_DS_TIMEOUT]) / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	mod_timer(&ax25_dev->dama.slave_timer, jiffies + HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61)  *	DAMA Slave Timeout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62)  *	Silently discard all (slave) connections in case our master forgot us...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) static void ax25_ds_timeout(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	ax25_dev *ax25_dev = from_timer(ax25_dev, t, dama.slave_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	ax25_cb *ax25;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	if (ax25_dev == NULL || !ax25_dev->dama.slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		return;			/* Yikes! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	if (!ax25_dev->dama.slave_timeout || --ax25_dev->dama.slave_timeout) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		ax25_ds_set_timer(ax25_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	spin_lock(&ax25_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	ax25_for_each(ax25, &ax25_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		if (ax25->ax25_dev != ax25_dev || !(ax25->condition & AX25_COND_DAMA_MODE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		ax25_disconnect(ax25, ETIMEDOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	spin_unlock(&ax25_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	ax25_dev_dama_off(ax25_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) void ax25_ds_heartbeat_expiry(ax25_cb *ax25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	struct sock *sk=ax25->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	if (sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		bh_lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	switch (ax25->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	case AX25_STATE_0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	case AX25_STATE_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		/* Magic here: If we listen() and a new link dies before it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		   is accepted() it isn't 'dead' so doesn't get removed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		if (!sk || sock_flag(sk, SOCK_DESTROY) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		    (sk->sk_state == TCP_LISTEN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		     sock_flag(sk, SOCK_DEAD))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			if (sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 				sock_hold(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 				ax25_destroy_socket(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 				bh_unlock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 				/* Ungrab socket and destroy it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 				sock_put(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 			} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 				ax25_destroy_socket(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	case AX25_STATE_3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		 * Check the state of the receive buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		if (sk != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 			if (atomic_read(&sk->sk_rmem_alloc) <
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			    (sk->sk_rcvbuf >> 1) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 			    (ax25->condition & AX25_COND_OWN_RX_BUSY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 				ax25->condition &= ~AX25_COND_OWN_RX_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 				ax25->condition &= ~AX25_COND_ACK_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (sk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		bh_unlock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	ax25_start_heartbeat(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* dl1bke 960114: T3 works much like the IDLE timeout, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)  *                gets reloaded with every frame for this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)  *		  connection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) void ax25_ds_t3timer_expiry(ax25_cb *ax25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	ax25_dama_off(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	ax25_disconnect(ax25, ETIMEDOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /* dl1bke 960228: close the connection when IDLE expires.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)  *		  unlike T3 this timer gets reloaded only on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)  *		  I frames.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) void ax25_ds_idletimer_expiry(ax25_cb *ax25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	ax25_clear_queues(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	ax25->n2count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	ax25->state = AX25_STATE_2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	ax25_calculate_t1(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	ax25_start_t1timer(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	ax25_stop_t3timer(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	if (ax25->sk != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		bh_lock_sock(ax25->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		ax25->sk->sk_state     = TCP_CLOSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		ax25->sk->sk_err       = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		ax25->sk->sk_shutdown |= SEND_SHUTDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		if (!sock_flag(ax25->sk, SOCK_DEAD)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			ax25->sk->sk_state_change(ax25->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			sock_set_flag(ax25->sk, SOCK_DEAD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		bh_unlock_sock(ax25->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* dl1bke 960114: The DAMA protocol requires to send data and SABM/DISC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)  *                within the poll of any connected channel. Remember
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)  *                that we are not allowed to send anything unless we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)  *                get polled by the Master.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  *                Thus we'll have to do parts of our T1 handling in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)  *                ax25_enquiry_response().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) void ax25_ds_t1_timeout(ax25_cb *ax25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	switch (ax25->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	case AX25_STATE_1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		if (ax25->n2count == ax25->n2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 			if (ax25->modulus == AX25_MODULUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 				ax25_disconnect(ax25, ETIMEDOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 				return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 			} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 				ax25->modulus = AX25_MODULUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 				ax25->window  = ax25->ax25_dev->values[AX25_VALUES_WINDOW];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 				ax25->n2count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 				ax25_send_control(ax25, AX25_SABM, AX25_POLLOFF, AX25_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			ax25->n2count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			if (ax25->modulus == AX25_MODULUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 				ax25_send_control(ax25, AX25_SABM, AX25_POLLOFF, AX25_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 				ax25_send_control(ax25, AX25_SABME, AX25_POLLOFF, AX25_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	case AX25_STATE_2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		if (ax25->n2count == ax25->n2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 			ax25_send_control(ax25, AX25_DISC, AX25_POLLON, AX25_COMMAND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 			if (!sock_flag(ax25->sk, SOCK_DESTROY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 				ax25_disconnect(ax25, ETIMEDOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			ax25->n2count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	case AX25_STATE_3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		if (ax25->n2count == ax25->n2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 			ax25_send_control(ax25, AX25_DM, AX25_POLLON, AX25_RESPONSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 			ax25_disconnect(ax25, ETIMEDOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			ax25->n2count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	ax25_calculate_t1(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	ax25_start_t1timer(ax25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }