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 u8_max = 0xFF;
20 static unsigned long seqw_min = DCCPF_SEQ_W 20 static unsigned long seqw_min = DCCPF_SEQ_WMIN,
21 seqw_max = 0xFFFFFFFF; 21 seqw_max = 0xFFFFFFFF; /* maximum on 32 bit */
22 22
23 static struct ctl_table dccp_default_table[] = 23 static struct ctl_table dccp_default_table[] = {
24 { 24 {
25 .procname = "seq_window" 25 .procname = "seq_window",
26 .data = &sysctl_dccp 26 .data = &sysctl_dccp_sequence_window,
27 .maxlen = sizeof(sysct 27 .maxlen = sizeof(sysctl_dccp_sequence_window),
28 .mode = 0644, 28 .mode = 0644,
29 .proc_handler = proc_doulong 29 .proc_handler = proc_doulongvec_minmax,
30 .extra1 = &seqw_min, 30 .extra1 = &seqw_min, /* RFC 4340, 7.5.2 */
31 .extra2 = &seqw_max, 31 .extra2 = &seqw_max,
32 }, 32 },
33 { 33 {
34 .procname = "rx_ccid", 34 .procname = "rx_ccid",
35 .data = &sysctl_dccp 35 .data = &sysctl_dccp_rx_ccid,
36 .maxlen = sizeof(sysct 36 .maxlen = sizeof(sysctl_dccp_rx_ccid),
37 .mode = 0644, 37 .mode = 0644,
38 .proc_handler = proc_dointve 38 .proc_handler = proc_dointvec_minmax,
39 .extra1 = SYSCTL_ZERO, 39 .extra1 = SYSCTL_ZERO,
40 .extra2 = &u8_max, 40 .extra2 = &u8_max, /* RFC 4340, 10. */
41 }, 41 },
42 { 42 {
43 .procname = "tx_ccid", 43 .procname = "tx_ccid",
44 .data = &sysctl_dccp 44 .data = &sysctl_dccp_tx_ccid,
45 .maxlen = sizeof(sysct 45 .maxlen = sizeof(sysctl_dccp_tx_ccid),
46 .mode = 0644, 46 .mode = 0644,
47 .proc_handler = proc_dointve 47 .proc_handler = proc_dointvec_minmax,
48 .extra1 = SYSCTL_ZERO, 48 .extra1 = SYSCTL_ZERO,
49 .extra2 = &u8_max, 49 .extra2 = &u8_max, /* RFC 4340, 10. */
50 }, 50 },
51 { 51 {
52 .procname = "request_ret 52 .procname = "request_retries",
53 .data = &sysctl_dccp 53 .data = &sysctl_dccp_request_retries,
54 .maxlen = sizeof(sysct 54 .maxlen = sizeof(sysctl_dccp_request_retries),
55 .mode = 0644, 55 .mode = 0644,
56 .proc_handler = proc_dointve 56 .proc_handler = proc_dointvec_minmax,
57 .extra1 = SYSCTL_ONE, 57 .extra1 = SYSCTL_ONE,
58 .extra2 = &u8_max, 58 .extra2 = &u8_max,
59 }, 59 },
60 { 60 {
61 .procname = "retries1", 61 .procname = "retries1",
62 .data = &sysctl_dccp 62 .data = &sysctl_dccp_retries1,
63 .maxlen = sizeof(sysct 63 .maxlen = sizeof(sysctl_dccp_retries1),
64 .mode = 0644, 64 .mode = 0644,
65 .proc_handler = proc_dointve 65 .proc_handler = proc_dointvec_minmax,
66 .extra1 = SYSCTL_ZERO, 66 .extra1 = SYSCTL_ZERO,
67 .extra2 = &u8_max, 67 .extra2 = &u8_max,
68 }, 68 },
69 { 69 {
70 .procname = "retries2", 70 .procname = "retries2",
71 .data = &sysctl_dccp 71 .data = &sysctl_dccp_retries2,
72 .maxlen = sizeof(sysct 72 .maxlen = sizeof(sysctl_dccp_retries2),
73 .mode = 0644, 73 .mode = 0644,
74 .proc_handler = proc_dointve 74 .proc_handler = proc_dointvec_minmax,
75 .extra1 = SYSCTL_ZERO, 75 .extra1 = SYSCTL_ZERO,
76 .extra2 = &u8_max, 76 .extra2 = &u8_max,
77 }, 77 },
78 { 78 {
79 .procname = "tx_qlen", 79 .procname = "tx_qlen",
80 .data = &sysctl_dccp 80 .data = &sysctl_dccp_tx_qlen,
81 .maxlen = sizeof(sysct 81 .maxlen = sizeof(sysctl_dccp_tx_qlen),
82 .mode = 0644, 82 .mode = 0644,
83 .proc_handler = proc_dointve 83 .proc_handler = proc_dointvec_minmax,
84 .extra1 = SYSCTL_ZERO, 84 .extra1 = SYSCTL_ZERO,
85 }, 85 },
86 { 86 {
87 .procname = "sync_rateli 87 .procname = "sync_ratelimit",
88 .data = &sysctl_dccp 88 .data = &sysctl_dccp_sync_ratelimit,
89 .maxlen = sizeof(sysct 89 .maxlen = sizeof(sysctl_dccp_sync_ratelimit),
90 .mode = 0644, 90 .mode = 0644,
91 .proc_handler = proc_dointve 91 .proc_handler = proc_dointvec_ms_jiffies,
92 }, 92 },
93 }; 93 };
94 94
95 static struct ctl_table_header *dccp_table_hea 95 static struct ctl_table_header *dccp_table_header;
96 96
97 int __init dccp_sysctl_init(void) 97 int __init dccp_sysctl_init(void)
98 { 98 {
99 dccp_table_header = register_net_sysct 99 dccp_table_header = register_net_sysctl(&init_net, "net/dccp/default",
100 dccp_default_table); 100 dccp_default_table);
101 101
102 return dccp_table_header != NULL ? 0 : 102 return dccp_table_header != NULL ? 0 : -ENOMEM;
103 } 103 }
104 104
105 void dccp_sysctl_exit(void) 105 void dccp_sysctl_exit(void)
106 { 106 {
107 if (dccp_table_header != NULL) { 107 if (dccp_table_header != NULL) {
108 unregister_net_sysctl_table(dc 108 unregister_net_sysctl_table(dccp_table_header);
109 dccp_table_header = NULL; 109 dccp_table_header = NULL;
110 } 110 }
111 } 111 }
112 112
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