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 net-next 02/12] tcp: Namespace-ify sysctl_tcp_moderate_rcvbuf
Date: Fri, 27 Oct 2017 07:47:22 -0700 [thread overview]
Message-ID: <20171027144732.23885-3-edumazet@google.com> (raw)
In-Reply-To: <20171027144732.23885-1-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_input.c | 5 ++---
net/ipv4/tcp_ipv4.c | 1 +
5 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 9606e2ea1f1428744c7a734bf6cc58944889a8dd..4458a54fe3f4e9dc79561039dba0f4d19ee8271e 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -143,6 +143,7 @@ struct netns_ipv4 {
int sysctl_tcp_adv_win_scale;
int sysctl_tcp_frto;
int sysctl_tcp_nometrics_save;
+ int sysctl_tcp_moderate_rcvbuf;
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 6ab7fa4154b27aad8d70d02f48d1c0aa9302839a..f954e74578fff2e52cf89521132c72fe5a047d13 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -247,7 +247,6 @@ extern int sysctl_tcp_max_orphans;
extern long sysctl_tcp_mem[3];
extern int sysctl_tcp_wmem[3];
extern int sysctl_tcp_rmem[3];
-extern int sysctl_tcp_moderate_rcvbuf;
extern int sysctl_tcp_tso_win_divisor;
extern int sysctl_tcp_workaround_signed_windows;
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index b742a5e26a9d9c5a2ad730fda649bdd152b23988..2ebe87fd11696948ab87349ba233a16eccb98b44 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -451,13 +451,6 @@ static struct ctl_table ipv4_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec
},
- {
- .procname = "tcp_moderate_rcvbuf",
- .data = &sysctl_tcp_moderate_rcvbuf,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
{
.procname = "tcp_tso_win_divisor",
.data = &sysctl_tcp_tso_win_divisor,
@@ -1145,6 +1138,13 @@ static struct ctl_table ipv4_net_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec,
},
+ {
+ .procname = "tcp_moderate_rcvbuf",
+ .data = &init_net.ipv4.sysctl_tcp_moderate_rcvbuf,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
{ }
};
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 90d76f1c8f96bc89618ddc59ae237a34cd25db7c..ce481325115fe7cb8a3b007276f2ce2a519a7383 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -84,7 +84,6 @@ int sysctl_tcp_challenge_ack_limit = 1000;
int sysctl_tcp_max_orphans __read_mostly = NR_FILE;
int sysctl_tcp_min_rtt_wlen __read_mostly = 300;
-int sysctl_tcp_moderate_rcvbuf __read_mostly = 1;
int sysctl_tcp_invalid_ratelimit __read_mostly = HZ/2;
#define FLAG_DATA 0x01 /* Incoming frame contained data. */
@@ -411,7 +410,7 @@ static void tcp_fixup_rcvbuf(struct sock *sk)
/* Dynamic Right Sizing (DRS) has 2 to 3 RTT latency
* Allow enough cushion so that sender is not limited by our window
*/
- if (sysctl_tcp_moderate_rcvbuf)
+ if (sock_net(sk)->ipv4.sysctl_tcp_moderate_rcvbuf)
rcvmem <<= 2;
if (sk->sk_rcvbuf < rcvmem)
@@ -602,7 +601,7 @@ void tcp_rcv_space_adjust(struct sock *sk)
* <prev RTT . ><current RTT .. ><next RTT .... >
*/
- if (sysctl_tcp_moderate_rcvbuf &&
+ if (sock_net(sk)->ipv4.sysctl_tcp_moderate_rcvbuf &&
!(sk->sk_userlocks & SOCK_RCVBUF_LOCK)) {
int rcvwin, rcvmem, rcvbuf;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 49757c75821111c6d2cf413415be2c1b58482659..27f376b90913519493e78e1f3a198a3a840892f1 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2493,6 +2493,7 @@ static int __net_init tcp_sk_init(struct net *net)
net->ipv4.sysctl_tcp_app_win = 31;
net->ipv4.sysctl_tcp_adv_win_scale = 1;
net->ipv4.sysctl_tcp_frto = 2;
+ net->ipv4.sysctl_tcp_moderate_rcvbuf = 1;
net->ipv4.sysctl_tcp_fastopen = TFO_CLIENT_ENABLE;
spin_lock_init(&net->ipv4.tcp_fastopen_ctx_lock);
--
2.15.0.rc2.357.g7e34df9404-goog
next prev parent reply other threads:[~2017-10-27 14:47 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 14:47 [PATCH net-next 00/12] tcp: move 12 sysctls to namespaces Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 01/12] tcp: Namespace-ify sysctl_tcp_nometrics_save Eric Dumazet
2017-10-27 14:47 ` Eric Dumazet [this message]
2017-10-27 14:47 ` [PATCH net-next 03/12] tcp: Namespace-ify sysctl_tcp_tso_win_divisor Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 04/12] tcp: Namespace-ify sysctl_tcp_workaround_signed_windows Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 05/12] tcp: Namespace-ify sysctl_tcp_limit_output_bytes Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 06/12] tcp: Namespace-ify sysctl_tcp_challenge_ack_limit Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 07/12] tcp: Namespace-ify sysctl_tcp_min_tso_segs Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 08/12] tcp: Namespace-ify sysctl_tcp_min_rtt_wlen Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 09/12] tcp: Namespace-ify sysctl_tcp_autocorking Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 10/12] tcp: Namespace-ify sysctl_tcp_invalid_ratelimit Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 11/12] tcp: Namespace-ify sysctl_tcp_pacing_ss_ratio Eric Dumazet
2017-10-27 14:47 ` [PATCH net-next 12/12] tcp: Namespace-ify sysctl_tcp_pacing_ca_ratio Eric Dumazet
2017-10-28 10:25 ` [PATCH net-next 00/12] tcp: move 12 sysctls to namespaces David Miller
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