Release 4.11 net/decnet/dn_timer.c
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
* interface as the means of communication with the user level.
*
* DECnet Socket Timer Functions
*
* Author: Steve Whitehouse <SteveW@ACM.org>
*
*
* Changes:
* Steve Whitehouse : Made keepalive timer part of the same
* timer idea.
* Steve Whitehouse : Added checks for sk->sock_readers
* David S. Miller : New socket locking
* Steve Whitehouse : Timer grabs socket ref.
*/
#include <linux/net.h>
#include <linux/socket.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <net/sock.h>
#include <linux/atomic.h>
#include <linux/jiffies.h>
#include <net/flow.h>
#include <net/dn.h>
/*
* Slow timer is for everything else (n * 500mS)
*/
#define SLOW_INTERVAL (HZ/2)
static void dn_slow_timer(unsigned long arg);
void dn_start_slow_timer(struct sock *sk)
{
setup_timer(&sk->sk_timer, dn_slow_timer, (unsigned long)sk);
sk_reset_timer(sk, &sk->sk_timer, jiffies + SLOW_INTERVAL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 25 | 62.50% | 1 | 33.33% |
| Eric Dumazet | 13 | 32.50% | 1 | 33.33% |
| Arnaldo Carvalho de Melo | 2 | 5.00% | 1 | 33.33% |
| Total | 40 | 100.00% | 3 | 100.00% |
void dn_stop_slow_timer(struct sock *sk)
{
sk_stop_timer(sk, &sk->sk_timer);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 16 | 80.00% | 1 | 33.33% |
| Eric Dumazet | 3 | 15.00% | 1 | 33.33% |
| Arnaldo Carvalho de Melo | 1 | 5.00% | 1 | 33.33% |
| Total | 20 | 100.00% | 3 | 100.00% |
static void dn_slow_timer(unsigned long arg)
{
struct sock *sk = (struct sock *)arg;
struct dn_scp *scp = DN_SK(sk);
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) {
sk_reset_timer(sk, &sk->sk_timer, jiffies + HZ / 10);
goto out;
}
/*
* The persist timer is the standard slow timer used for retransmits
* in both connection establishment and disconnection as well as
* in the RUN state. The different states are catered for by changing
* the function pointer in the socket. Setting the timer to a value
* of zero turns it off. We allow the persist_fxn to turn the
* timer off in a permant way by returning non-zero, so that
* timer based routines may remove sockets. This is why we have a
* sock_hold()/sock_put() around the timer to prevent the socket
* going away in the middle.
*/
if (scp->persist && scp->persist_fxn) {
if (scp->persist <= SLOW_INTERVAL) {
scp->persist = 0;
if (scp->persist_fxn(sk))
goto out;
} else {
scp->persist -= SLOW_INTERVAL;
}
}
/*
* Check for keepalive timeout. After the other timer 'cos if
* the previous timer caused a retransmit, we don't need to
* do this. scp->stamp is the last time that we sent a packet.
* The keepalive function sends a link service packet to the
* other end. If it remains unacknowledged, the standard
* socket timers will eventually shut the socket down. Each
* time we do this, scp->stamp will be updated, thus
* we won't try and send another until scp->keepalive has passed
* since the last successful transmission.
*/
if (scp->keepalive && scp->keepalive_fxn && (scp->state == DN_RUN)) {
if (time_after_eq(jiffies, scp->stamp + scp->keepalive))
scp->keepalive_fxn(sk);
}
sk_reset_timer(sk, &sk->sk_timer, jiffies + SLOW_INTERVAL);
out:
bh_unlock_sock(sk);
sock_put(sk);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 159 | 86.41% | 3 | 37.50% |
| Eric Dumazet | 12 | 6.52% | 1 | 12.50% |
| Himangi Saraogi | 5 | 2.72% | 1 | 12.50% |
| Linus Torvalds | 3 | 1.63% | 1 | 12.50% |
| Benjamin LaHaise | 3 | 1.63% | 1 | 12.50% |
| Arnaldo Carvalho de Melo | 2 | 1.09% | 1 | 12.50% |
| Total | 184 | 100.00% | 8 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 240 | 82.19% | 4 | 33.33% |
| Eric Dumazet | 28 | 9.59% | 1 | 8.33% |
| Himangi Saraogi | 8 | 2.74% | 1 | 8.33% |
| Arnaldo Carvalho de Melo | 5 | 1.71% | 1 | 8.33% |
| Linus Torvalds | 3 | 1.03% | 1 | 8.33% |
| Steven Whitehouse | 3 | 1.03% | 1 | 8.33% |
| Benjamin LaHaise | 3 | 1.03% | 1 | 8.33% |
| Adrian Bunk | 1 | 0.34% | 1 | 8.33% |
| Arun Sharma | 1 | 0.34% | 1 | 8.33% |
| Total | 292 | 100.00% | 12 | 100.00% |
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