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https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-10-30 07:38:52 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
248
net/netrom/nr_timer.c
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248
net/netrom/nr_timer.c
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
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* Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
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*/
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/kernel.h>
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#include <linux/jiffies.h>
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#include <linux/timer.h>
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#include <linux/string.h>
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#include <linux/sockios.h>
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#include <linux/net.h>
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#include <net/ax25.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <net/sock.h>
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#include <net/tcp_states.h>
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#include <linux/uaccess.h>
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#include <linux/fcntl.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <net/netrom.h>
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static void nr_heartbeat_expiry(unsigned long);
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static void nr_t1timer_expiry(unsigned long);
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static void nr_t2timer_expiry(unsigned long);
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static void nr_t4timer_expiry(unsigned long);
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static void nr_idletimer_expiry(unsigned long);
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void nr_init_timers(struct sock *sk)
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{
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struct nr_sock *nr = nr_sk(sk);
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setup_timer(&nr->t1timer, nr_t1timer_expiry, (unsigned long)sk);
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setup_timer(&nr->t2timer, nr_t2timer_expiry, (unsigned long)sk);
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setup_timer(&nr->t4timer, nr_t4timer_expiry, (unsigned long)sk);
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setup_timer(&nr->idletimer, nr_idletimer_expiry, (unsigned long)sk);
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/* initialized by sock_init_data */
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sk->sk_timer.data = (unsigned long)sk;
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sk->sk_timer.function = &nr_heartbeat_expiry;
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}
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void nr_start_t1timer(struct sock *sk)
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{
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struct nr_sock *nr = nr_sk(sk);
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mod_timer(&nr->t1timer, jiffies + nr->t1);
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}
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void nr_start_t2timer(struct sock *sk)
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{
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struct nr_sock *nr = nr_sk(sk);
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mod_timer(&nr->t2timer, jiffies + nr->t2);
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}
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void nr_start_t4timer(struct sock *sk)
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{
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struct nr_sock *nr = nr_sk(sk);
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mod_timer(&nr->t4timer, jiffies + nr->t4);
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}
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void nr_start_idletimer(struct sock *sk)
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{
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struct nr_sock *nr = nr_sk(sk);
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if (nr->idle > 0)
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mod_timer(&nr->idletimer, jiffies + nr->idle);
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}
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void nr_start_heartbeat(struct sock *sk)
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{
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mod_timer(&sk->sk_timer, jiffies + 5 * HZ);
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}
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void nr_stop_t1timer(struct sock *sk)
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{
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del_timer(&nr_sk(sk)->t1timer);
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}
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void nr_stop_t2timer(struct sock *sk)
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{
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del_timer(&nr_sk(sk)->t2timer);
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}
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void nr_stop_t4timer(struct sock *sk)
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{
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del_timer(&nr_sk(sk)->t4timer);
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}
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void nr_stop_idletimer(struct sock *sk)
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{
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del_timer(&nr_sk(sk)->idletimer);
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}
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void nr_stop_heartbeat(struct sock *sk)
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{
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del_timer(&sk->sk_timer);
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}
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int nr_t1timer_running(struct sock *sk)
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{
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return timer_pending(&nr_sk(sk)->t1timer);
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}
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static void nr_heartbeat_expiry(unsigned long param)
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{
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struct sock *sk = (struct sock *)param;
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struct nr_sock *nr = nr_sk(sk);
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bh_lock_sock(sk);
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switch (nr->state) {
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case NR_STATE_0:
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/* Magic here: If we listen() and a new link dies before it
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is accepted() it isn't 'dead' so doesn't get removed. */
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if (sock_flag(sk, SOCK_DESTROY) ||
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(sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) {
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sock_hold(sk);
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bh_unlock_sock(sk);
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nr_destroy_socket(sk);
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sock_put(sk);
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return;
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}
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break;
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case NR_STATE_3:
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/*
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* Check for the state of the receive buffer.
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*/
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if (atomic_read(&sk->sk_rmem_alloc) < (sk->sk_rcvbuf / 2) &&
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(nr->condition & NR_COND_OWN_RX_BUSY)) {
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nr->condition &= ~NR_COND_OWN_RX_BUSY;
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nr->condition &= ~NR_COND_ACK_PENDING;
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nr->vl = nr->vr;
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nr_write_internal(sk, NR_INFOACK);
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break;
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}
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break;
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}
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nr_start_heartbeat(sk);
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bh_unlock_sock(sk);
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}
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static void nr_t2timer_expiry(unsigned long param)
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{
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struct sock *sk = (struct sock *)param;
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struct nr_sock *nr = nr_sk(sk);
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bh_lock_sock(sk);
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if (nr->condition & NR_COND_ACK_PENDING) {
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nr->condition &= ~NR_COND_ACK_PENDING;
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nr_enquiry_response(sk);
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}
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bh_unlock_sock(sk);
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}
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static void nr_t4timer_expiry(unsigned long param)
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{
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struct sock *sk = (struct sock *)param;
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bh_lock_sock(sk);
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nr_sk(sk)->condition &= ~NR_COND_PEER_RX_BUSY;
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bh_unlock_sock(sk);
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}
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static void nr_idletimer_expiry(unsigned long param)
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{
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struct sock *sk = (struct sock *)param;
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struct nr_sock *nr = nr_sk(sk);
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bh_lock_sock(sk);
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nr_clear_queues(sk);
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nr->n2count = 0;
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nr_write_internal(sk, NR_DISCREQ);
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nr->state = NR_STATE_2;
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nr_start_t1timer(sk);
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nr_stop_t2timer(sk);
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nr_stop_t4timer(sk);
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sk->sk_state = TCP_CLOSE;
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sk->sk_err = 0;
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sk->sk_shutdown |= SEND_SHUTDOWN;
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if (!sock_flag(sk, SOCK_DEAD)) {
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sk->sk_state_change(sk);
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sock_set_flag(sk, SOCK_DEAD);
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}
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bh_unlock_sock(sk);
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}
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static void nr_t1timer_expiry(unsigned long param)
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{
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struct sock *sk = (struct sock *)param;
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struct nr_sock *nr = nr_sk(sk);
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bh_lock_sock(sk);
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switch (nr->state) {
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case NR_STATE_1:
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if (nr->n2count == nr->n2) {
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nr_disconnect(sk, ETIMEDOUT);
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bh_unlock_sock(sk);
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return;
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} else {
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nr->n2count++;
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nr_write_internal(sk, NR_CONNREQ);
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}
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break;
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case NR_STATE_2:
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if (nr->n2count == nr->n2) {
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nr_disconnect(sk, ETIMEDOUT);
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bh_unlock_sock(sk);
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return;
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} else {
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nr->n2count++;
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nr_write_internal(sk, NR_DISCREQ);
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}
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break;
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case NR_STATE_3:
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if (nr->n2count == nr->n2) {
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nr_disconnect(sk, ETIMEDOUT);
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bh_unlock_sock(sk);
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return;
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} else {
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nr->n2count++;
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nr_requeue_frames(sk);
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}
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break;
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}
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nr_start_t1timer(sk);
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bh_unlock_sock(sk);
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}
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