From: Eric Dumazet <edumazet@google.com>
To: "David S . Miller" <davem@davemloft.net>
Cc: netdev <netdev@vger.kernel.org>,
Eric Dumazet <edumazet@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: [PATCH v2 net-next 05/15] tcp: Namespace-ify sysctl_tcp_retrans_collapse
Date: Thu, 26 Oct 2017 21:55:00 -0700 [thread overview]
Message-ID: <20171027045510.5827-6-edumazet@google.com> (raw)
In-Reply-To: <20171027045510.5827-1-edumazet@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
include/net/netns/ipv4.h | 1 +
include/net/tcp.h | 1 -
net/ipv4/sysctl_net_ipv4.c | 14 +++++++-------
net/ipv4/tcp_ipv4.c | 2 +-
net/ipv4/tcp_output.c | 5 +----
5 files changed, 10 insertions(+), 13 deletions(-)
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 8662692686b3af98a94a176230b9ed147881d87a..b28c172b10e497f235b51aae0fc2d3bbf7cc51f3 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -132,6 +132,7 @@ struct netns_ipv4 {
int sysctl_tcp_recovery;
int sysctl_tcp_thin_linear_timeouts;
int sysctl_tcp_slow_start_after_idle;
+ int sysctl_tcp_retrans_collapse;
struct inet_timewait_death_row tcp_death_row;
int sysctl_max_syn_backlog;
int sysctl_tcp_fastopen;
diff --git a/include/net/tcp.h b/include/net/tcp.h
index cc2ab522eb5cf7cb08b6918cdfd5c5500cfbf057..33cc86355b8ff9b506d21ad46cfc01b3916f5b61 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -243,7 +243,6 @@ void tcp_time_wait(struct sock *sk, int state, int timeo);
/* sysctl variables for tcp */
-extern int sysctl_tcp_retrans_collapse;
extern int sysctl_tcp_stdurg;
extern int sysctl_tcp_rfc1337;
extern int sysctl_tcp_abort_on_overflow;
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 40d69af8b363bc236e23879973872d8f9346d85e..533b92ad39dd0cada542028fe2f276d9eebcd2c8 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -386,13 +386,6 @@ static int proc_tcp_available_ulp(struct ctl_table *ctl,
}
static struct ctl_table ipv4_table[] = {
- {
- .procname = "tcp_retrans_collapse",
- .data = &sysctl_tcp_retrans_collapse,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
- },
{
.procname = "tcp_max_orphans",
.data = &sysctl_tcp_max_orphans,
@@ -1145,6 +1138,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
+ {
+ .procname = "tcp_retrans_collapse",
+ .data = &init_net.ipv4.sysctl_tcp_retrans_collapse,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
{ }
};
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index cea63a4b59655823def7a423d27191003c7f084c..2bc6ba2059d32aa848dbc415b4b0e194b61b0268 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2487,7 +2487,7 @@ static int __net_init tcp_sk_init(struct net *net)
net->ipv4.sysctl_tcp_early_retrans = 3;
net->ipv4.sysctl_tcp_recovery = TCP_RACK_LOSS_DETECTION;
net->ipv4.sysctl_tcp_slow_start_after_idle = 1; /* By default, RFC2861 behavior. */
-
+ net->ipv4.sysctl_tcp_retrans_collapse = 1;
net->ipv4.sysctl_tcp_fastopen = TFO_CLIENT_ENABLE;
spin_lock_init(&net->ipv4.tcp_fastopen_ctx_lock);
net->ipv4.sysctl_tcp_fastopen_blackhole_timeout = 60 * 60;
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index bdc288a06f941add38a5cde434081c63ee94ed42..55a0aa4b96dfc7cd8f703ad42b932bae23ea5660 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -45,9 +45,6 @@
#include <trace/events/tcp.h>
-/* People can turn this off for buggy TCP's found in printers etc. */
-int sysctl_tcp_retrans_collapse __read_mostly = 1;
-
/* People can turn this on to work with those rare, broken TCPs that
* interpret the window field as a signed quantity.
*/
@@ -2804,7 +2801,7 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *to,
struct sk_buff *skb = to, *tmp;
bool first = true;
- if (!sysctl_tcp_retrans_collapse)
+ if (!sock_net(sk)->ipv4.sysctl_tcp_retrans_collapse)
return;
if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN)
return;
--
2.15.0.rc2.357.g7e34df9404-goog
next prev parent reply other threads:[~2017-10-27 4:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 4:54 [PATCH v2 net-next 00/15] tcp: move 14 sysctls to namespaces Eric Dumazet
2017-10-27 4:54 ` [PATCH v2 net-next 01/15] tcp: Namespace-ify sysctl_tcp_early_retrans Eric Dumazet
2017-10-27 4:54 ` [PATCH v2 net-next 02/15] tcp: Namespace-ify sysctl_tcp_recovery Eric Dumazet
2017-10-27 4:54 ` [PATCH v2 net-next 03/15] tcp: Namespace-ify sysctl_tcp_thin_linear_timeouts Eric Dumazet
2017-10-27 4:54 ` [PATCH v2 net-next 04/15] tcp: Namespace-ify sysctl_tcp_slow_start_after_idle Eric Dumazet
2017-10-27 4:55 ` Eric Dumazet [this message]
2017-10-27 4:55 ` [PATCH v2 net-next 06/15] tcp: Namespace-ify sysctl_tcp_stdurg Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 07/15] tcp: Namespace-ify sysctl_tcp_rfc1337 Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 08/15] tcp: Namespace-ify sysctl_tcp_abort_on_overflow Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 09/15] tcp: Namespace-ify sysctl_tcp_fack Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 10/15] tcp: remove stale sysctl_tcp_reordering Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 11/15] tcp: Namespace-ify sysctl_tcp_max_reordering Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 12/15] tcp: Namespace-ify sysctl_tcp_dsack Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 13/15] tcp: Namespace-ify sysctl_tcp_app_win Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 14/15] tcp: Namespace-ify sysctl_tcp_adv_win_scale Eric Dumazet
2017-10-27 4:55 ` [PATCH v2 net-next 15/15] tcp: Namespace-ify sysctl_tcp_frto Eric Dumazet
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