Unverified Commit 6185ea60 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!937 tcp: restrict net.ipv4.tcp_app_win 

Merge Pull Request from: @ci-robot 
 
PR sync from:  YueHaibing <yuehaibing@huawei.com>
 https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/thread/IQ4SJZTGXXAAT4OQ72ZLUTPEDFFVDQQX/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/937

 

Reviewed-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 76de4d65 bb54ca93

Documentation/networking/ip-sysctl.rst

+2 −0
Original line number Diff line number Diff line
@@ -272,6 +272,8 @@ tcp_app_win - INTEGER 
	Reserve max(window/2^tcp_app_win, mss) of window for application

	buffer. Value 0 is special, it means that nothing is reserved.



	Possible values are [0, 31], inclusive.



	Default: 31



tcp_autocorking - BOOLEAN

net/ipv4/sysctl_net_ipv4.c

+4 −1
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ static int ip_local_port_range_min[] = { 1, 1 }; 
static int ip_local_port_range_max[] = { 65535, 65535 };

static int tcp_adv_win_scale_min = -31;

static int tcp_adv_win_scale_max = 31;

static int tcp_app_win_max = 31;

static int tcp_min_snd_mss_min = TCP_MIN_SND_MSS;

static int tcp_min_snd_mss_max = 65535;

static int ip_privileged_port_min;
@@ -1164,7 +1165,9 @@ static struct ctl_table ipv4_net_table[] = { 
		.data		= &init_net.ipv4.sysctl_tcp_app_win,

		.maxlen		= sizeof(int),

		.mode		= 0644,

		.proc_handler	= proc_dointvec

		.proc_handler	= proc_dointvec_minmax,

		.extra1		= SYSCTL_ZERO,

		.extra2		= &tcp_app_win_max,

	},

	{

		.procname	= "tcp_adv_win_scale",