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[DCCP]: Initialise write_xmit_timer also on passive sockets 

The TX CCID needs the write_xmit_timer for delaying packet sends. Previously
this timer was only activated on active (connecting) sockets.

This patch initialises the write_xmit_timer in sync with the other timers, i.e.
the timer will be ready on any socket. This is used by applications with a
listening socket which start to stream after receiving an initiation by the
client.  The write_xmit_timer is stopped when the application closes, as before.

Was tested to work and to remove the timer bug reported on dccp@vger.

Also moved timer initialisation into timer.c (static). 

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gerrit Renker 2007-03-09 13:47:58 -08:00 committed by David S. Miller
parent c4e38f41e3
commit aabb601b0f
3 changed files with 26 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
net/dccp/dccp.h
View File

@ -191,6 +191,7 @@ extern void dccp_send_sync(struct sock *sk, const u64 seq,
const enum dccp_pkt_type pkt_type);
extern void dccp_write_xmit(struct sock *sk, int block);
extern void dccp_write_xmit_timer(unsigned long data);
extern void dccp_write_space(struct sock *sk);
extern void dccp_init_xmit_timers(struct sock *sk);

16
net/dccp/output.c
View File

@ -213,19 +213,6 @@ do_interrupted:
goto out;
}
static void dccp_write_xmit_timer(unsigned long data) {
struct sock *sk = (struct sock *)data;
struct dccp_sock *dp = dccp_sk(sk);
bh_lock_sock(sk);
if (sock_owned_by_user(sk))
sk_reset_timer(sk, &dp->dccps_xmit_timer, jiffies+1);
else
dccp_write_xmit(sk, 0);
bh_unlock_sock(sk);
sock_put(sk);
}
void dccp_write_xmit(struct sock *sk, int block)
{
struct dccp_sock *dp = dccp_sk(sk);
@ -434,9 +421,6 @@ static inline void dccp_connect_init(struct sock *sk)
dp->dccps_gar = dp->dccps_iss;
icsk->icsk_retransmits = 0;
init_timer(&dp->dccps_xmit_timer);
dp->dccps_xmit_timer.data = (unsigned long)sk;
dp->dccps_xmit_timer.function = dccp_write_xmit_timer;
}
int dccp_connect(struct sock *sk)

25
net/dccp/timer.c
View File

@ -261,8 +261,33 @@ out:
sock_put(sk);
}
/* Transmit-delay timer: used by the CCIDs to delay actual send time */
void dccp_write_xmit_timer(unsigned long data)
{
struct sock *sk = (struct sock *)data;
struct dccp_sock *dp = dccp_sk(sk);
bh_lock_sock(sk);
if (sock_owned_by_user(sk))
sk_reset_timer(sk, &dp->dccps_xmit_timer, jiffies+1);
else
dccp_write_xmit(sk, 0);
bh_unlock_sock(sk);
sock_put(sk);
}
static void dccp_init_write_xmit_timer(struct sock *sk)
{
struct dccp_sock *dp = dccp_sk(sk);
init_timer(&dp->dccps_xmit_timer);
dp->dccps_xmit_timer.data = (unsigned long)sk;
dp->dccps_xmit_timer.function = dccp_write_xmit_timer;
}
void dccp_init_xmit_timers(struct sock *sk)
{
dccp_init_write_xmit_timer(sk);
inet_csk_init_xmit_timers(sk, &dccp_write_timer, &dccp_delack_timer,
&dccp_keepalive_timer);
}