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linux-arm
linux-vm
Commits
ab92bb2f
Commit
ab92bb2f
authored
Jul 09, 2012
by
David S. Miller
Browse files
tcp: Abstract back handling peer aliveness test into helper function.
Signed-off-by:
David S. Miller
<
davem@davemloft.net
>
parent
4aabd8ef
Changes
4
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Inline
Side-by-side
include/net/tcp.h
View file @
ab92bb2f
...
...
@@ -389,6 +389,7 @@ extern void tcp_enter_loss(struct sock *sk, int how);
extern
void
tcp_clear_retrans
(
struct
tcp_sock
*
tp
);
extern
void
tcp_update_metrics
(
struct
sock
*
sk
);
extern
void
tcp_init_metrics
(
struct
sock
*
sk
);
extern
bool
tcp_peer_is_proven
(
struct
request_sock
*
req
,
struct
dst_entry
*
dst
);
extern
void
tcp_disable_fack
(
struct
tcp_sock
*
tp
);
extern
void
tcp_close
(
struct
sock
*
sk
,
long
timeout
);
extern
void
tcp_init_sock
(
struct
sock
*
sk
);
...
...
net/ipv4/tcp_ipv4.c
View file @
ab92bb2f
...
...
@@ -1405,7 +1405,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
(
sysctl_max_syn_backlog
-
inet_csk_reqsk_queue_len
(
sk
)
<
(
sysctl_max_syn_backlog
>>
2
))
&&
(
!
peer
||
!
peer
->
tcp_ts_stamp
)
&&
(
!
dst
||
!
dst_metric
(
dst
,
RTAX_RTT
)
))
{
!
tcp_peer_is_proven
(
req
,
dst
))
{
/* Without syncookies last quarter of
* backlog is filled with destinations,
* proven to be alive.
...
...
net/ipv4/tcp_metrics.c
View file @
ab92bb2f
#include
<linux/module.h>
#include
<linux/cache.h>
#include
<linux/tcp.h>
#include
<net/inet_connection_sock.h>
#include
<net/request_sock.h>
#include
<net/sock.h>
#include
<net/dst.h>
#include
<net/tcp.h>
...
...
@@ -190,3 +192,11 @@ void tcp_init_metrics(struct sock *sk)
tp
->
snd_cwnd
=
tcp_init_cwnd
(
tp
,
dst
);
tp
->
snd_cwnd_stamp
=
tcp_time_stamp
;
}
bool
tcp_peer_is_proven
(
struct
request_sock
*
req
,
struct
dst_entry
*
dst
)
{
if
(
!
dst
)
return
false
;
return
dst_metric
(
dst
,
RTAX_RTT
)
?
true
:
false
;
}
EXPORT_SYMBOL_GPL
(
tcp_peer_is_proven
);
net/ipv6/tcp_ipv6.c
View file @
ab92bb2f
...
...
@@ -1177,7 +1177,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
(
sysctl_max_syn_backlog
-
inet_csk_reqsk_queue_len
(
sk
)
<
(
sysctl_max_syn_backlog
>>
2
))
&&
(
!
peer
||
!
peer
->
tcp_ts_stamp
)
&&
(
!
dst
||
!
dst_metric
(
dst
,
RTAX_RTT
)
))
{
!
tcp_peer_is_proven
(
req
,
dst
))
{
/* Without syncookies last quarter of
* backlog is filled with destinations,
* proven to be alive.
...
...
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