Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * sysctl_net_llc.c: sysctl interface to LLC net subsystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <net/net_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <net/llc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifndef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #error This file should not be compiled without CONFIG_SYSCTL defined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static struct ctl_table llc2_timeout_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		.procname	= "ack",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		.data		= &sysctl_llc2_ack_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		.maxlen		= sizeof(sysctl_llc2_ack_timeout),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		.proc_handler   = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		.procname	= "busy",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		.data		= &sysctl_llc2_busy_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		.maxlen		= sizeof(sysctl_llc2_busy_timeout),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		.proc_handler   = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		.procname	= "p",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		.data		= &sysctl_llc2_p_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		.maxlen		= sizeof(sysctl_llc2_p_timeout),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		.proc_handler   = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		.procname	= "rej",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		.data		= &sysctl_llc2_rej_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		.maxlen		= sizeof(sysctl_llc2_rej_timeout),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		.mode		= 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		.proc_handler   = proc_dointvec_jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static struct ctl_table llc_station_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static struct ctl_table_header *llc2_timeout_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static struct ctl_table_header *llc_station_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int __init llc_sysctl_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	llc2_timeout_header = register_net_sysctl(&init_net, "net/llc/llc2/timeout", llc2_timeout_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	llc_station_header = register_net_sysctl(&init_net, "net/llc/station", llc_station_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	if (!llc2_timeout_header || !llc_station_header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		llc_sysctl_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) void llc_sysctl_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	if (llc2_timeout_header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 		unregister_net_sysctl_table(llc2_timeout_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 		llc2_timeout_header = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	if (llc_station_header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 		unregister_net_sysctl_table(llc_station_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 		llc_station_header = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }