cregit-Linux how code gets into the kernel

Release 4.15 net/netrom/nr_timer.c

Directory: net/netrom
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
 * Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
 */
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <net/ax25.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <net/tcp_states.h>
#include <linux/uaccess.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <net/netrom.h>

static void nr_heartbeat_expiry(struct timer_list *);
static void nr_t1timer_expiry(struct timer_list *);
static void nr_t2timer_expiry(struct timer_list *);
static void nr_t4timer_expiry(struct timer_list *);
static void nr_idletimer_expiry(struct timer_list *);


void nr_init_timers(struct sock *sk) { struct nr_sock *nr = nr_sk(sk); timer_setup(&nr->t1timer, nr_t1timer_expiry, 0); timer_setup(&nr->t2timer, nr_t2timer_expiry, 0); timer_setup(&nr->t4timer, nr_t4timer_expiry, 0); timer_setup(&nr->idletimer, nr_idletimer_expiry, 0); /* initialized by sock_init_data */ sk->sk_timer.function = nr_heartbeat_expiry; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2836.36%116.67%
Pavel Emelyanov1620.78%116.67%
Vinay K. Nallamothu1519.48%116.67%
Kees Cook810.39%116.67%
David S. Miller810.39%116.67%
Ralf Bächle22.60%116.67%
Total77100.00%6100.00%


void nr_start_t1timer(struct sock *sk) { struct nr_sock *nr = nr_sk(sk); mod_timer(&nr->t1timer, jiffies + nr->t1); }

Contributors

PersonTokensPropCommitsCommitProp
Vinay K. Nallamothu2573.53%133.33%
Linus Torvalds (pre-git)720.59%133.33%
Ralf Bächle25.88%133.33%
Total34100.00%3100.00%


void nr_start_t2timer(struct sock *sk) { struct nr_sock *nr = nr_sk(sk); mod_timer(&nr->t2timer, jiffies + nr->t2); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1544.12%125.00%
Vinay K. Nallamothu926.47%125.00%
David S. Miller823.53%125.00%
Ralf Bächle25.88%125.00%
Total34100.00%4100.00%


void nr_start_t4timer(struct sock *sk) { struct nr_sock *nr = nr_sk(sk); mod_timer(&nr->t4timer, jiffies + nr->t4); }

Contributors

PersonTokensPropCommitsCommitProp
Vinay K. Nallamothu1955.88%133.33%
Linus Torvalds (pre-git)1338.24%133.33%
Ralf Bächle25.88%133.33%
Total34100.00%3100.00%


void nr_start_idletimer(struct sock *sk) { struct nr_sock *nr = nr_sk(sk); if (nr->idle > 0) mod_timer(&nr->idletimer, jiffies + nr->idle); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2969.05%125.00%
David S. Miller819.05%125.00%
Vinay K. Nallamothu37.14%125.00%
Ralf Bächle24.76%125.00%
Total42100.00%4100.00%


void nr_start_heartbeat(struct sock *sk) { mod_timer(&sk->sk_timer, jiffies + 5 * HZ); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2187.50%133.33%
Vinay K. Nallamothu28.33%133.33%
Arnaldo Carvalho de Melo14.17%133.33%
Total24100.00%3100.00%


void nr_stop_t1timer(struct sock *sk) { del_timer(&nr_sk(sk)->t1timer); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1885.71%150.00%
David S. Miller314.29%150.00%
Total21100.00%2100.00%


void nr_stop_t2timer(struct sock *sk) { del_timer(&nr_sk(sk)->t2timer); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1885.71%266.67%
David S. Miller314.29%133.33%
Total21100.00%3100.00%


void nr_stop_t4timer(struct sock *sk) { del_timer(&nr_sk(sk)->t4timer); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1885.71%266.67%
David S. Miller314.29%133.33%
Total21100.00%3100.00%


void nr_stop_idletimer(struct sock *sk) { del_timer(&nr_sk(sk)->idletimer); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1885.71%266.67%
David S. Miller314.29%133.33%
Total21100.00%3100.00%


void nr_stop_heartbeat(struct sock *sk) { del_timer(&sk->sk_timer); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1794.44%266.67%
Arnaldo Carvalho de Melo15.56%133.33%
Total18100.00%3100.00%


int nr_t1timer_running(struct sock *sk) { return timer_pending(&nr_sk(sk)->t1timer); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1986.36%266.67%
David S. Miller313.64%133.33%
Total22100.00%3100.00%


static void nr_heartbeat_expiry(struct timer_list *t) { struct sock *sk = from_timer(sk, t, sk_timer); struct nr_sock *nr = nr_sk(sk); bh_lock_sock(sk); switch (nr->state) { case NR_STATE_0: /* Magic here: If we listen() and a new link dies before it is accepted() it isn't 'dead' so doesn't get removed. */ if (sock_flag(sk, SOCK_DESTROY) || (sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) { sock_hold(sk); bh_unlock_sock(sk); nr_destroy_socket(sk); sock_put(sk); return; } break; case NR_STATE_3: /* * Check for the state of the receive buffer. */ if (atomic_read(&sk->sk_rmem_alloc) < (sk->sk_rcvbuf / 2) && (nr->condition & NR_COND_OWN_RX_BUSY)) { nr->condition &= ~NR_COND_OWN_RX_BUSY; nr->condition &= ~NR_COND_ACK_PENDING; nr->vl = nr->vr; nr_write_internal(sk, NR_INFOACK); break; } break; } nr_start_heartbeat(sk); bh_unlock_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)11063.58%533.33%
Ralf Bächle169.25%426.67%
Jeroen Vreeken148.09%16.67%
Kees Cook126.94%16.67%
Arnaldo Carvalho de Melo95.20%213.33%
David S. Miller84.62%16.67%
James Morris42.31%16.67%
Total173100.00%15100.00%


static void nr_t2timer_expiry(struct timer_list *t) { struct nr_sock *nr = from_timer(nr, t, t2timer); struct sock *sk = &nr->sock; bh_lock_sock(sk); if (nr->condition & NR_COND_ACK_PENDING) { nr->condition &= ~NR_COND_ACK_PENDING; nr_enquiry_response(sk); } bh_unlock_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2943.28%342.86%
Kees Cook2029.85%114.29%
Ralf Bächle1217.91%228.57%
David S. Miller68.96%114.29%
Total67100.00%7100.00%


static void nr_t4timer_expiry(struct timer_list *t) { struct nr_sock *nr = from_timer(nr, t, t4timer); struct sock *sk = &nr->sock; bh_lock_sock(sk); nr_sk(sk)->condition &= ~NR_COND_PEER_RX_BUSY; bh_unlock_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2138.18%240.00%
Kees Cook2138.18%120.00%
Ralf Bächle1018.18%120.00%
David S. Miller35.45%120.00%
Total55100.00%5100.00%


static void nr_idletimer_expiry(struct timer_list *t) { struct nr_sock *nr = from_timer(nr, t, idletimer); struct sock *sk = &nr->sock; bh_lock_sock(sk); nr_clear_queues(sk); nr->n2count = 0; nr_write_internal(sk, NR_DISCREQ); nr->state = NR_STATE_2; nr_start_t1timer(sk); nr_stop_t2timer(sk); nr_stop_t4timer(sk); sk->sk_state = TCP_CLOSE; sk->sk_err = 0; sk->sk_shutdown |= SEND_SHUTDOWN; if (!sock_flag(sk, SOCK_DEAD)) { sk->sk_state_change(sk); sock_set_flag(sk, SOCK_DEAD); } bh_unlock_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)7457.81%330.00%
Kees Cook2015.62%110.00%
Arnaldo Carvalho de Melo129.38%220.00%
Ralf Bächle129.38%220.00%
David S. Miller64.69%110.00%
James Morris43.12%110.00%
Total128100.00%10100.00%


static void nr_t1timer_expiry(struct timer_list *t) { struct nr_sock *nr = from_timer(nr, t, t1timer); struct sock *sk = &nr->sock; bh_lock_sock(sk); switch (nr->state) { case NR_STATE_1: if (nr->n2count == nr->n2) { nr_disconnect(sk, ETIMEDOUT); bh_unlock_sock(sk); return; } else { nr->n2count++; nr_write_internal(sk, NR_CONNREQ); } break; case NR_STATE_2: if (nr->n2count == nr->n2) { nr_disconnect(sk, ETIMEDOUT); bh_unlock_sock(sk); return; } else { nr->n2count++; nr_write_internal(sk, NR_DISCREQ); } break; case NR_STATE_3: if (nr->n2count == nr->n2) { nr_disconnect(sk, ETIMEDOUT); bh_unlock_sock(sk); return; } else { nr->n2count++; nr_requeue_frames(sk); } break; } nr_start_t1timer(sk); bh_unlock_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)13571.81%337.50%
Kees Cook2010.64%112.50%
Jeroen Vreeken157.98%112.50%
Ralf Bächle126.38%225.00%
David S. Miller63.19%112.50%
Total188100.00%8100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)67862.26%731.82%
Kees Cook11610.65%14.55%
Ralf Bächle736.70%418.18%
Vinay K. Nallamothu736.70%14.55%
David S. Miller706.43%14.55%
Jeroen Vreeken292.66%14.55%
Arnaldo Carvalho de Melo242.20%313.64%
Pavel Emelyanov161.47%14.55%
James Morris80.73%14.55%
Rusty Russell10.09%14.55%
Fabian Frederick10.09%14.55%
Total1089100.00%22100.00%
Directory: net/netrom
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