1 // SPDX-License-Identifier: GPL-2.0-only <<
2 /* 1 /*
3 * net/dccp/sysctl.c 2 * net/dccp/sysctl.c
4 * 3 *
5 * An implementation of the DCCP protocol 4 * An implementation of the DCCP protocol
6 * Arnaldo Carvalho de Melo <acme@mandriva.co 5 * Arnaldo Carvalho de Melo <acme@mandriva.com>
>> 6 *
>> 7 * This program is free software; you can redistribute it and/or
>> 8 * modify it under the terms of the GNU General Public License v2
>> 9 * as published by the Free Software Foundation.
7 */ 10 */
8 11
9 #include <linux/mm.h> 12 #include <linux/mm.h>
10 #include <linux/sysctl.h> 13 #include <linux/sysctl.h>
11 #include "dccp.h" 14 #include "dccp.h"
12 #include "feat.h" 15 #include "feat.h"
13 16
14 #ifndef CONFIG_SYSCTL 17 #ifndef CONFIG_SYSCTL
15 #error This file should not be compiled withou 18 #error This file should not be compiled without CONFIG_SYSCTL defined
16 #endif 19 #endif
17 20
18 /* Boundary values */ 21 /* Boundary values */
19 static int u8_max = 0xFF; !! 22 static int zero = 0,
>> 23 one = 1,
>> 24 u8_max = 0xFF;
20 static unsigned long seqw_min = DCCPF_SEQ_W 25 static unsigned long seqw_min = DCCPF_SEQ_WMIN,
21 seqw_max = 0xFFFFFFFF; 26 seqw_max = 0xFFFFFFFF; /* maximum on 32 bit */
22 27
23 static struct ctl_table dccp_default_table[] = 28 static struct ctl_table dccp_default_table[] = {
24 { 29 {
25 .procname = "seq_window" 30 .procname = "seq_window",
26 .data = &sysctl_dccp 31 .data = &sysctl_dccp_sequence_window,
27 .maxlen = sizeof(sysct 32 .maxlen = sizeof(sysctl_dccp_sequence_window),
28 .mode = 0644, 33 .mode = 0644,
29 .proc_handler = proc_doulong 34 .proc_handler = proc_doulongvec_minmax,
30 .extra1 = &seqw_min, 35 .extra1 = &seqw_min, /* RFC 4340, 7.5.2 */
31 .extra2 = &seqw_max, 36 .extra2 = &seqw_max,
32 }, 37 },
33 { 38 {
34 .procname = "rx_ccid", 39 .procname = "rx_ccid",
35 .data = &sysctl_dccp 40 .data = &sysctl_dccp_rx_ccid,
36 .maxlen = sizeof(sysct 41 .maxlen = sizeof(sysctl_dccp_rx_ccid),
37 .mode = 0644, 42 .mode = 0644,
38 .proc_handler = proc_dointve 43 .proc_handler = proc_dointvec_minmax,
39 .extra1 = SYSCTL_ZERO, !! 44 .extra1 = &zero,
40 .extra2 = &u8_max, 45 .extra2 = &u8_max, /* RFC 4340, 10. */
41 }, 46 },
42 { 47 {
43 .procname = "tx_ccid", 48 .procname = "tx_ccid",
44 .data = &sysctl_dccp 49 .data = &sysctl_dccp_tx_ccid,
45 .maxlen = sizeof(sysct 50 .maxlen = sizeof(sysctl_dccp_tx_ccid),
46 .mode = 0644, 51 .mode = 0644,
47 .proc_handler = proc_dointve 52 .proc_handler = proc_dointvec_minmax,
48 .extra1 = SYSCTL_ZERO, !! 53 .extra1 = &zero,
49 .extra2 = &u8_max, 54 .extra2 = &u8_max, /* RFC 4340, 10. */
50 }, 55 },
51 { 56 {
52 .procname = "request_ret 57 .procname = "request_retries",
53 .data = &sysctl_dccp 58 .data = &sysctl_dccp_request_retries,
54 .maxlen = sizeof(sysct 59 .maxlen = sizeof(sysctl_dccp_request_retries),
55 .mode = 0644, 60 .mode = 0644,
56 .proc_handler = proc_dointve 61 .proc_handler = proc_dointvec_minmax,
57 .extra1 = SYSCTL_ONE, !! 62 .extra1 = &one,
58 .extra2 = &u8_max, 63 .extra2 = &u8_max,
59 }, 64 },
60 { 65 {
61 .procname = "retries1", 66 .procname = "retries1",
62 .data = &sysctl_dccp 67 .data = &sysctl_dccp_retries1,
63 .maxlen = sizeof(sysct 68 .maxlen = sizeof(sysctl_dccp_retries1),
64 .mode = 0644, 69 .mode = 0644,
65 .proc_handler = proc_dointve 70 .proc_handler = proc_dointvec_minmax,
66 .extra1 = SYSCTL_ZERO, !! 71 .extra1 = &zero,
67 .extra2 = &u8_max, 72 .extra2 = &u8_max,
68 }, 73 },
69 { 74 {
70 .procname = "retries2", 75 .procname = "retries2",
71 .data = &sysctl_dccp 76 .data = &sysctl_dccp_retries2,
72 .maxlen = sizeof(sysct 77 .maxlen = sizeof(sysctl_dccp_retries2),
73 .mode = 0644, 78 .mode = 0644,
74 .proc_handler = proc_dointve 79 .proc_handler = proc_dointvec_minmax,
75 .extra1 = SYSCTL_ZERO, !! 80 .extra1 = &zero,
76 .extra2 = &u8_max, 81 .extra2 = &u8_max,
77 }, 82 },
78 { 83 {
79 .procname = "tx_qlen", 84 .procname = "tx_qlen",
80 .data = &sysctl_dccp 85 .data = &sysctl_dccp_tx_qlen,
81 .maxlen = sizeof(sysct 86 .maxlen = sizeof(sysctl_dccp_tx_qlen),
82 .mode = 0644, 87 .mode = 0644,
83 .proc_handler = proc_dointve 88 .proc_handler = proc_dointvec_minmax,
84 .extra1 = SYSCTL_ZERO, !! 89 .extra1 = &zero,
85 }, 90 },
86 { 91 {
87 .procname = "sync_rateli 92 .procname = "sync_ratelimit",
88 .data = &sysctl_dccp 93 .data = &sysctl_dccp_sync_ratelimit,
89 .maxlen = sizeof(sysct 94 .maxlen = sizeof(sysctl_dccp_sync_ratelimit),
90 .mode = 0644, 95 .mode = 0644,
91 .proc_handler = proc_dointve 96 .proc_handler = proc_dointvec_ms_jiffies,
92 }, 97 },
>> 98
>> 99 { }
93 }; 100 };
94 101
95 static struct ctl_table_header *dccp_table_hea 102 static struct ctl_table_header *dccp_table_header;
96 103
97 int __init dccp_sysctl_init(void) 104 int __init dccp_sysctl_init(void)
98 { 105 {
99 dccp_table_header = register_net_sysct 106 dccp_table_header = register_net_sysctl(&init_net, "net/dccp/default",
100 dccp_default_table); 107 dccp_default_table);
101 108
102 return dccp_table_header != NULL ? 0 : 109 return dccp_table_header != NULL ? 0 : -ENOMEM;
103 } 110 }
104 111
105 void dccp_sysctl_exit(void) 112 void dccp_sysctl_exit(void)
106 { 113 {
107 if (dccp_table_header != NULL) { 114 if (dccp_table_header != NULL) {
108 unregister_net_sysctl_table(dc 115 unregister_net_sysctl_table(dccp_table_header);
109 dccp_table_header = NULL; 116 dccp_table_header = NULL;
110 } 117 }
111 } 118 }
112 119
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