Linux kernel mirror (for testing)
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linux
1/* -*- linux-c -*-
2 * sysctl_net_core.c: sysctl interface to net core subsystem.
3 *
4 * Begun April 1, 1996, Mike Shaver.
5 * Added /proc/sys/net/core directory entry (empty =) ). [MS]
6 */
7
8#include <linux/mm.h>
9#include <linux/sysctl.h>
10#include <linux/config.h>
11#include <linux/module.h>
12
13#ifdef CONFIG_SYSCTL
14
15extern int netdev_max_backlog;
16extern int weight_p;
17extern int no_cong_thresh;
18extern int no_cong;
19extern int lo_cong;
20extern int mod_cong;
21extern int netdev_fastroute;
22extern int net_msg_cost;
23extern int net_msg_burst;
24
25extern __u32 sysctl_wmem_max;
26extern __u32 sysctl_rmem_max;
27extern __u32 sysctl_wmem_default;
28extern __u32 sysctl_rmem_default;
29
30extern int sysctl_core_destroy_delay;
31extern int sysctl_optmem_max;
32extern int sysctl_somaxconn;
33
34#ifdef CONFIG_NET_DIVERT
35extern char sysctl_divert_version[];
36#endif /* CONFIG_NET_DIVERT */
37
38/*
39 * This strdup() is used for creating copies of network
40 * device names to be handed over to sysctl.
41 */
42
43char *net_sysctl_strdup(const char *s)
44{
45 char *rv = kmalloc(strlen(s)+1, GFP_KERNEL);
46 if (rv)
47 strcpy(rv, s);
48 return rv;
49}
50
51ctl_table core_table[] = {
52#ifdef CONFIG_NET
53 {
54 .ctl_name = NET_CORE_WMEM_MAX,
55 .procname = "wmem_max",
56 .data = &sysctl_wmem_max,
57 .maxlen = sizeof(int),
58 .mode = 0644,
59 .proc_handler = &proc_dointvec
60 },
61 {
62 .ctl_name = NET_CORE_RMEM_MAX,
63 .procname = "rmem_max",
64 .data = &sysctl_rmem_max,
65 .maxlen = sizeof(int),
66 .mode = 0644,
67 .proc_handler = &proc_dointvec
68 },
69 {
70 .ctl_name = NET_CORE_WMEM_DEFAULT,
71 .procname = "wmem_default",
72 .data = &sysctl_wmem_default,
73 .maxlen = sizeof(int),
74 .mode = 0644,
75 .proc_handler = &proc_dointvec
76 },
77 {
78 .ctl_name = NET_CORE_RMEM_DEFAULT,
79 .procname = "rmem_default",
80 .data = &sysctl_rmem_default,
81 .maxlen = sizeof(int),
82 .mode = 0644,
83 .proc_handler = &proc_dointvec
84 },
85 {
86 .ctl_name = NET_CORE_DEV_WEIGHT,
87 .procname = "dev_weight",
88 .data = &weight_p,
89 .maxlen = sizeof(int),
90 .mode = 0644,
91 .proc_handler = &proc_dointvec
92 },
93 {
94 .ctl_name = NET_CORE_MAX_BACKLOG,
95 .procname = "netdev_max_backlog",
96 .data = &netdev_max_backlog,
97 .maxlen = sizeof(int),
98 .mode = 0644,
99 .proc_handler = &proc_dointvec
100 },
101 {
102 .ctl_name = NET_CORE_NO_CONG_THRESH,
103 .procname = "no_cong_thresh",
104 .data = &no_cong_thresh,
105 .maxlen = sizeof(int),
106 .mode = 0644,
107 .proc_handler = &proc_dointvec
108 },
109 {
110 .ctl_name = NET_CORE_NO_CONG,
111 .procname = "no_cong",
112 .data = &no_cong,
113 .maxlen = sizeof(int),
114 .mode = 0644,
115 .proc_handler = &proc_dointvec
116 },
117 {
118 .ctl_name = NET_CORE_LO_CONG,
119 .procname = "lo_cong",
120 .data = &lo_cong,
121 .maxlen = sizeof(int),
122 .mode = 0644,
123 .proc_handler = &proc_dointvec
124 },
125 {
126 .ctl_name = NET_CORE_MOD_CONG,
127 .procname = "mod_cong",
128 .data = &mod_cong,
129 .maxlen = sizeof(int),
130 .mode = 0644,
131 .proc_handler = &proc_dointvec
132 },
133 {
134 .ctl_name = NET_CORE_MSG_COST,
135 .procname = "message_cost",
136 .data = &net_msg_cost,
137 .maxlen = sizeof(int),
138 .mode = 0644,
139 .proc_handler = &proc_dointvec_jiffies,
140 .strategy = &sysctl_jiffies,
141 },
142 {
143 .ctl_name = NET_CORE_MSG_BURST,
144 .procname = "message_burst",
145 .data = &net_msg_burst,
146 .maxlen = sizeof(int),
147 .mode = 0644,
148 .proc_handler = &proc_dointvec,
149 },
150 {
151 .ctl_name = NET_CORE_OPTMEM_MAX,
152 .procname = "optmem_max",
153 .data = &sysctl_optmem_max,
154 .maxlen = sizeof(int),
155 .mode = 0644,
156 .proc_handler = &proc_dointvec
157 },
158#ifdef CONFIG_NET_DIVERT
159 {
160 .ctl_name = NET_CORE_DIVERT_VERSION,
161 .procname = "divert_version",
162 .data = (void *)sysctl_divert_version,
163 .maxlen = 32,
164 .mode = 0444,
165 .proc_handler = &proc_dostring
166 },
167#endif /* CONFIG_NET_DIVERT */
168#endif /* CONFIG_NET */
169 {
170 .ctl_name = NET_CORE_SOMAXCONN,
171 .procname = "somaxconn",
172 .data = &sysctl_somaxconn,
173 .maxlen = sizeof(int),
174 .mode = 0644,
175 .proc_handler = &proc_dointvec
176 },
177 { .ctl_name = 0 }
178};
179
180EXPORT_SYMBOL(net_sysctl_strdup);
181
182#endif