/* *  net/dccp/sysctl.c * *  An implementation of the DCCP protocol *  Arnaldo Carvalho de Melo <acme@mandriva.com> * *	This program is free software; you can redistribute it and/or *	modify it under the terms of the GNU General Public License v2 *	as published by the Free Software Foundation. */ #include <linux/mm.h>#include <linux/sysctl.h>#include "dccp.h"#include "feat.h" #ifndef CONFIG_SYSCTL#error This file should not be compiled without CONFIG_SYSCTL defined#endif /* Boundary values */static int		zero     = 0,			u8_max   = 0xFF;static unsigned long	seqw_min = DCCPF_SEQ_WMIN,			seqw_max = 0xFFFFFFFF;		/* maximum on 32 bit */ static struct ctl_table dccp_default_table[] = {	{		.procname	= "seq_window",		.data		= &sysctl_dccp_sequence_window,		.maxlen		= sizeof(sysctl_dccp_sequence_window),		.mode		= 0644,		.proc_handler	= proc_doulongvec_minmax,		.extra1		= &seqw_min,		/* RFC 4340, 7.5.2 */		.extra2		= &seqw_max,	},	{		.procname	= "rx_ccid",		.data		= &sysctl_dccp_rx_ccid,		.maxlen		= sizeof(sysctl_dccp_rx_ccid),		.mode		= 0644,		.proc_handler	= proc_dointvec_minmax,		.extra1		= &zero,		.extra2		= &u8_max,		/* RFC 4340, 10. */	},	{		.procname	= "tx_ccid",		.data		= &sysctl_dccp_tx_ccid,		.maxlen		= sizeof(sysctl_dccp_tx_ccid),		.mode		= 0644,		.proc_handler	= proc_dointvec_minmax,		.extra1		= &zero,		.extra2		= &u8_max,		/* RFC 4340, 10. */	},	{		.procname	= "request_retries",		.data		= &sysctl_dccp_request_retries,		.maxlen		= sizeof(sysctl_dccp_request_retries),		.mode		= 0644,		.proc_handler	= proc_dointvec_minmax,		.extra1		= &zero,		.extra2		= &u8_max,	},	{		.procname	= "retries1",		.data		= &sysctl_dccp_retries1,		.maxlen		= sizeof(sysctl_dccp_retries1),		.mode		= 0644,		.proc_handler	= proc_dointvec_minmax,		.extra1		= &zero,		.extra2		= &u8_max,	},	{		.procname	= "retries2",		.data		= &sysctl_dccp_retries2,		.maxlen		= sizeof(sysctl_dccp_retries2),		.mode		= 0644,		.proc_handler	= proc_dointvec_minmax,		.extra1		= &zero,		.extra2		= &u8_max,	},	{		.procname	= "tx_qlen",		.data		= &sysctl_dccp_tx_qlen,		.maxlen		= sizeof(sysctl_dccp_tx_qlen),		.mode		= 0644,		.proc_handler	= proc_dointvec_minmax,		.extra1		= &zero,	},	{		.procname	= "sync_ratelimit",		.data		= &sysctl_dccp_sync_ratelimit,		.maxlen		= sizeof(sysctl_dccp_sync_ratelimit),		.mode		= 0644,		.proc_handler	= proc_dointvec_ms_jiffies,	}, 	{ }}; static struct ctl_table_header *dccp_table_header; int __init dccp_sysctl_init(void){	dccp_table_header = register_net_sysctl(&init_net, "net/dccp/default",			dccp_default_table); 	return dccp_table_header != NULL ? 0 : -ENOMEM;} void dccp_sysctl_exit(void){	if (dccp_table_header != NULL) {		unregister_net_sysctl_table(dccp_table_header);		dccp_table_header = NULL;	}}