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