1*e46bd709SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2e55d912fSArnaldo Carvalho de Melo /* 3e55d912fSArnaldo Carvalho de Melo * net/dccp/sysctl.c 4e55d912fSArnaldo Carvalho de Melo * 5e55d912fSArnaldo Carvalho de Melo * An implementation of the DCCP protocol 6e55d912fSArnaldo Carvalho de Melo * Arnaldo Carvalho de Melo <acme@mandriva.com> 7e55d912fSArnaldo Carvalho de Melo */ 8e55d912fSArnaldo Carvalho de Melo 9e55d912fSArnaldo Carvalho de Melo #include <linux/mm.h> 10e55d912fSArnaldo Carvalho de Melo #include <linux/sysctl.h> 112e2e9e92SGerrit Renker #include "dccp.h" 122a0109a7SIan McDonald #include "feat.h" 13e55d912fSArnaldo Carvalho de Melo 14e55d912fSArnaldo Carvalho de Melo #ifndef CONFIG_SYSCTL 15e55d912fSArnaldo Carvalho de Melo #error This file should not be compiled without CONFIG_SYSCTL defined 16e55d912fSArnaldo Carvalho de Melo #endif 17e55d912fSArnaldo Carvalho de Melo 18883ca833SGerrit Renker /* Boundary values */ 19883ca833SGerrit Renker static int zero = 0, 208ba7e7bfSwangweidong one = 1, 21883ca833SGerrit Renker u8_max = 0xFF; 22bfbb2346SGerrit Renker static unsigned long seqw_min = DCCPF_SEQ_WMIN, 23bfbb2346SGerrit Renker seqw_max = 0xFFFFFFFF; /* maximum on 32 bit */ 24883ca833SGerrit Renker 25e55d912fSArnaldo Carvalho de Melo static struct ctl_table dccp_default_table[] = { 26e55d912fSArnaldo Carvalho de Melo { 27e55d912fSArnaldo Carvalho de Melo .procname = "seq_window", 28883ca833SGerrit Renker .data = &sysctl_dccp_sequence_window, 29883ca833SGerrit Renker .maxlen = sizeof(sysctl_dccp_sequence_window), 30e55d912fSArnaldo Carvalho de Melo .mode = 0644, 31883ca833SGerrit Renker .proc_handler = proc_doulongvec_minmax, 32883ca833SGerrit Renker .extra1 = &seqw_min, /* RFC 4340, 7.5.2 */ 33bfbb2346SGerrit Renker .extra2 = &seqw_max, 34e55d912fSArnaldo Carvalho de Melo }, 35e55d912fSArnaldo Carvalho de Melo { 36e55d912fSArnaldo Carvalho de Melo .procname = "rx_ccid", 37883ca833SGerrit Renker .data = &sysctl_dccp_rx_ccid, 38883ca833SGerrit Renker .maxlen = sizeof(sysctl_dccp_rx_ccid), 39e55d912fSArnaldo Carvalho de Melo .mode = 0644, 40883ca833SGerrit Renker .proc_handler = proc_dointvec_minmax, 41883ca833SGerrit Renker .extra1 = &zero, 42883ca833SGerrit Renker .extra2 = &u8_max, /* RFC 4340, 10. */ 43e55d912fSArnaldo Carvalho de Melo }, 44e55d912fSArnaldo Carvalho de Melo { 45e55d912fSArnaldo Carvalho de Melo .procname = "tx_ccid", 46883ca833SGerrit Renker .data = &sysctl_dccp_tx_ccid, 47883ca833SGerrit Renker .maxlen = sizeof(sysctl_dccp_tx_ccid), 48e55d912fSArnaldo Carvalho de Melo .mode = 0644, 49883ca833SGerrit Renker .proc_handler = proc_dointvec_minmax, 50883ca833SGerrit Renker .extra1 = &zero, 51883ca833SGerrit Renker .extra2 = &u8_max, /* RFC 4340, 10. */ 52e55d912fSArnaldo Carvalho de Melo }, 53e55d912fSArnaldo Carvalho de Melo { 542e2e9e92SGerrit Renker .procname = "request_retries", 552e2e9e92SGerrit Renker .data = &sysctl_dccp_request_retries, 562e2e9e92SGerrit Renker .maxlen = sizeof(sysctl_dccp_request_retries), 572e2e9e92SGerrit Renker .mode = 0644, 58883ca833SGerrit Renker .proc_handler = proc_dointvec_minmax, 598ba7e7bfSwangweidong .extra1 = &one, 60883ca833SGerrit Renker .extra2 = &u8_max, 612e2e9e92SGerrit Renker }, 622e2e9e92SGerrit Renker { 632e2e9e92SGerrit Renker .procname = "retries1", 642e2e9e92SGerrit Renker .data = &sysctl_dccp_retries1, 652e2e9e92SGerrit Renker .maxlen = sizeof(sysctl_dccp_retries1), 662e2e9e92SGerrit Renker .mode = 0644, 67883ca833SGerrit Renker .proc_handler = proc_dointvec_minmax, 68883ca833SGerrit Renker .extra1 = &zero, 69883ca833SGerrit Renker .extra2 = &u8_max, 702e2e9e92SGerrit Renker }, 712e2e9e92SGerrit Renker { 722e2e9e92SGerrit Renker .procname = "retries2", 732e2e9e92SGerrit Renker .data = &sysctl_dccp_retries2, 742e2e9e92SGerrit Renker .maxlen = sizeof(sysctl_dccp_retries2), 752e2e9e92SGerrit Renker .mode = 0644, 76883ca833SGerrit Renker .proc_handler = proc_dointvec_minmax, 77883ca833SGerrit Renker .extra1 = &zero, 78883ca833SGerrit Renker .extra2 = &u8_max, 792e2e9e92SGerrit Renker }, 8082e3ab9dSIan McDonald { 8182e3ab9dSIan McDonald .procname = "tx_qlen", 8282e3ab9dSIan McDonald .data = &sysctl_dccp_tx_qlen, 8382e3ab9dSIan McDonald .maxlen = sizeof(sysctl_dccp_tx_qlen), 8482e3ab9dSIan McDonald .mode = 0644, 85883ca833SGerrit Renker .proc_handler = proc_dointvec_minmax, 86883ca833SGerrit Renker .extra1 = &zero, 8782e3ab9dSIan McDonald }, 88a94f0f97SGerrit Renker { 89a94f0f97SGerrit Renker .procname = "sync_ratelimit", 90a94f0f97SGerrit Renker .data = &sysctl_dccp_sync_ratelimit, 91a94f0f97SGerrit Renker .maxlen = sizeof(sysctl_dccp_sync_ratelimit), 92a94f0f97SGerrit Renker .mode = 0644, 93a94f0f97SGerrit Renker .proc_handler = proc_dointvec_ms_jiffies, 94a94f0f97SGerrit Renker }, 9582e3ab9dSIan McDonald 96f8572d8fSEric W. Biederman { } 97e55d912fSArnaldo Carvalho de Melo }; 98e55d912fSArnaldo Carvalho de Melo 99e55d912fSArnaldo Carvalho de Melo static struct ctl_table_header *dccp_table_header; 100e55d912fSArnaldo Carvalho de Melo 101e55d912fSArnaldo Carvalho de Melo int __init dccp_sysctl_init(void) 102e55d912fSArnaldo Carvalho de Melo { 103ec8f23ceSEric W. Biederman dccp_table_header = register_net_sysctl(&init_net, "net/dccp/default", 104b5ccd792SPavel Emelyanov dccp_default_table); 105e55d912fSArnaldo Carvalho de Melo 106e55d912fSArnaldo Carvalho de Melo return dccp_table_header != NULL ? 0 : -ENOMEM; 107e55d912fSArnaldo Carvalho de Melo } 108e55d912fSArnaldo Carvalho de Melo 109e55d912fSArnaldo Carvalho de Melo void dccp_sysctl_exit(void) 110e55d912fSArnaldo Carvalho de Melo { 111e55d912fSArnaldo Carvalho de Melo if (dccp_table_header != NULL) { 1125dd3df10SEric W. Biederman unregister_net_sysctl_table(dccp_table_header); 113e55d912fSArnaldo Carvalho de Melo dccp_table_header = NULL; 114e55d912fSArnaldo Carvalho de Melo } 115e55d912fSArnaldo Carvalho de Melo } 116