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-rw-r--r--net/sctp/sysctl.c140
1 files changed, 63 insertions, 77 deletions
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index dc6f3ff32358..633cd178654b 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -45,9 +45,10 @@
45#include <net/sctp/sctp.h> 45#include <net/sctp/sctp.h>
46#include <linux/sysctl.h> 46#include <linux/sysctl.h>
47 47
48static ctl_handler sctp_sysctl_jiffies_ms; 48static int zero = 0;
49static long rto_timer_min = 1; 49static int one = 1;
50static long rto_timer_max = 86400000; /* One day */ 50static int timer_max = 86400000; /* ms in one day */
51static int int_max = INT_MAX;
51static long sack_timer_min = 1; 52static long sack_timer_min = 1;
52static long sack_timer_max = 500; 53static long sack_timer_max = 500;
53 54
@@ -56,45 +57,45 @@ static ctl_table sctp_table[] = {
56 .ctl_name = NET_SCTP_RTO_INITIAL, 57 .ctl_name = NET_SCTP_RTO_INITIAL,
57 .procname = "rto_initial", 58 .procname = "rto_initial",
58 .data = &sctp_rto_initial, 59 .data = &sctp_rto_initial,
59 .maxlen = sizeof(long), 60 .maxlen = sizeof(unsigned int),
60 .mode = 0644, 61 .mode = 0644,
61 .proc_handler = &proc_doulongvec_ms_jiffies_minmax, 62 .proc_handler = &proc_dointvec_minmax,
62 .strategy = &sctp_sysctl_jiffies_ms, 63 .strategy = &sysctl_intvec,
63 .extra1 = &rto_timer_min, 64 .extra1 = &one,
64 .extra2 = &rto_timer_max 65 .extra2 = &timer_max
65 }, 66 },
66 { 67 {
67 .ctl_name = NET_SCTP_RTO_MIN, 68 .ctl_name = NET_SCTP_RTO_MIN,
68 .procname = "rto_min", 69 .procname = "rto_min",
69 .data = &sctp_rto_min, 70 .data = &sctp_rto_min,
70 .maxlen = sizeof(long), 71 .maxlen = sizeof(unsigned int),
71 .mode = 0644, 72 .mode = 0644,
72 .proc_handler = &proc_doulongvec_ms_jiffies_minmax, 73 .proc_handler = &proc_dointvec_minmax,
73 .strategy = &sctp_sysctl_jiffies_ms, 74 .strategy = &sysctl_intvec,
74 .extra1 = &rto_timer_min, 75 .extra1 = &one,
75 .extra2 = &rto_timer_max 76 .extra2 = &timer_max
76 }, 77 },
77 { 78 {
78 .ctl_name = NET_SCTP_RTO_MAX, 79 .ctl_name = NET_SCTP_RTO_MAX,
79 .procname = "rto_max", 80 .procname = "rto_max",
80 .data = &sctp_rto_max, 81 .data = &sctp_rto_max,
81 .maxlen = sizeof(long), 82 .maxlen = sizeof(unsigned int),
82 .mode = 0644, 83 .mode = 0644,
83 .proc_handler = &proc_doulongvec_ms_jiffies_minmax, 84 .proc_handler = &proc_dointvec_minmax,
84 .strategy = &sctp_sysctl_jiffies_ms, 85 .strategy = &sysctl_intvec,
85 .extra1 = &rto_timer_min, 86 .extra1 = &one,
86 .extra2 = &rto_timer_max 87 .extra2 = &timer_max
87 }, 88 },
88 { 89 {
89 .ctl_name = NET_SCTP_VALID_COOKIE_LIFE, 90 .ctl_name = NET_SCTP_VALID_COOKIE_LIFE,
90 .procname = "valid_cookie_life", 91 .procname = "valid_cookie_life",
91 .data = &sctp_valid_cookie_life, 92 .data = &sctp_valid_cookie_life,
92 .maxlen = sizeof(long), 93 .maxlen = sizeof(unsigned int),
93 .mode = 0644, 94 .mode = 0644,
94 .proc_handler = &proc_doulongvec_ms_jiffies_minmax, 95 .proc_handler = &proc_dointvec_minmax,
95 .strategy = &sctp_sysctl_jiffies_ms, 96 .strategy = &sysctl_intvec,
96 .extra1 = &rto_timer_min, 97 .extra1 = &one,
97 .extra2 = &rto_timer_max 98 .extra2 = &timer_max
98 }, 99 },
99 { 100 {
100 .ctl_name = NET_SCTP_MAX_BURST, 101 .ctl_name = NET_SCTP_MAX_BURST,
@@ -102,7 +103,10 @@ static ctl_table sctp_table[] = {
102 .data = &sctp_max_burst, 103 .data = &sctp_max_burst,
103 .maxlen = sizeof(int), 104 .maxlen = sizeof(int),
104 .mode = 0644, 105 .mode = 0644,
105 .proc_handler = &proc_dointvec 106 .proc_handler = &proc_dointvec_minmax,
107 .strategy = &sysctl_intvec,
108 .extra1 = &zero,
109 .extra2 = &int_max
106 }, 110 },
107 { 111 {
108 .ctl_name = NET_SCTP_ASSOCIATION_MAX_RETRANS, 112 .ctl_name = NET_SCTP_ASSOCIATION_MAX_RETRANS,
@@ -110,7 +114,10 @@ static ctl_table sctp_table[] = {
110 .data = &sctp_max_retrans_association, 114 .data = &sctp_max_retrans_association,
111 .maxlen = sizeof(int), 115 .maxlen = sizeof(int),
112 .mode = 0644, 116 .mode = 0644,
113 .proc_handler = &proc_dointvec 117 .proc_handler = &proc_dointvec_minmax,
118 .strategy = &sysctl_intvec,
119 .extra1 = &one,
120 .extra2 = &int_max
114 }, 121 },
115 { 122 {
116 .ctl_name = NET_SCTP_SNDBUF_POLICY, 123 .ctl_name = NET_SCTP_SNDBUF_POLICY,
@@ -118,7 +125,8 @@ static ctl_table sctp_table[] = {
118 .data = &sctp_sndbuf_policy, 125 .data = &sctp_sndbuf_policy,
119 .maxlen = sizeof(int), 126 .maxlen = sizeof(int),
120 .mode = 0644, 127 .mode = 0644,
121 .proc_handler = &proc_dointvec 128 .proc_handler = &proc_dointvec,
129 .strategy = &sysctl_intvec
122 }, 130 },
123 { 131 {
124 .ctl_name = NET_SCTP_RCVBUF_POLICY, 132 .ctl_name = NET_SCTP_RCVBUF_POLICY,
@@ -126,7 +134,8 @@ static ctl_table sctp_table[] = {
126 .data = &sctp_rcvbuf_policy, 134 .data = &sctp_rcvbuf_policy,
127 .maxlen = sizeof(int), 135 .maxlen = sizeof(int),
128 .mode = 0644, 136 .mode = 0644,
129 .proc_handler = &proc_dointvec 137 .proc_handler = &proc_dointvec,
138 .strategy = &sysctl_intvec
130 }, 139 },
131 { 140 {
132 .ctl_name = NET_SCTP_PATH_MAX_RETRANS, 141 .ctl_name = NET_SCTP_PATH_MAX_RETRANS,
@@ -134,7 +143,10 @@ static ctl_table sctp_table[] = {
134 .data = &sctp_max_retrans_path, 143 .data = &sctp_max_retrans_path,
135 .maxlen = sizeof(int), 144 .maxlen = sizeof(int),
136 .mode = 0644, 145 .mode = 0644,
137 .proc_handler = &proc_dointvec 146 .proc_handler = &proc_dointvec_minmax,
147 .strategy = &sysctl_intvec,
148 .extra1 = &one,
149 .extra2 = &int_max
138 }, 150 },
139 { 151 {
140 .ctl_name = NET_SCTP_MAX_INIT_RETRANSMITS, 152 .ctl_name = NET_SCTP_MAX_INIT_RETRANSMITS,
@@ -142,18 +154,21 @@ static ctl_table sctp_table[] = {
142 .data = &sctp_max_retrans_init, 154 .data = &sctp_max_retrans_init,
143 .maxlen = sizeof(int), 155 .maxlen = sizeof(int),
144 .mode = 0644, 156 .mode = 0644,
145 .proc_handler = &proc_dointvec 157 .proc_handler = &proc_dointvec_minmax,
158 .strategy = &sysctl_intvec,
159 .extra1 = &one,
160 .extra2 = &int_max
146 }, 161 },
147 { 162 {
148 .ctl_name = NET_SCTP_HB_INTERVAL, 163 .ctl_name = NET_SCTP_HB_INTERVAL,
149 .procname = "hb_interval", 164 .procname = "hb_interval",
150 .data = &sctp_hb_interval, 165 .data = &sctp_hb_interval,
151 .maxlen = sizeof(long), 166 .maxlen = sizeof(unsigned int),
152 .mode = 0644, 167 .mode = 0644,
153 .proc_handler = &proc_doulongvec_ms_jiffies_minmax, 168 .proc_handler = &proc_dointvec_minmax,
154 .strategy = &sctp_sysctl_jiffies_ms, 169 .strategy = &sysctl_intvec,
155 .extra1 = &rto_timer_min, 170 .extra1 = &one,
156 .extra2 = &rto_timer_max 171 .extra2 = &timer_max
157 }, 172 },
158 { 173 {
159 .ctl_name = NET_SCTP_PRESERVE_ENABLE, 174 .ctl_name = NET_SCTP_PRESERVE_ENABLE,
@@ -161,23 +176,26 @@ static ctl_table sctp_table[] = {
161 .data = &sctp_cookie_preserve_enable, 176 .data = &sctp_cookie_preserve_enable,
162 .maxlen = sizeof(int), 177 .maxlen = sizeof(int),
163 .mode = 0644, 178 .mode = 0644,
164 .proc_handler = &proc_dointvec 179 .proc_handler = &proc_dointvec,
180 .strategy = &sysctl_intvec
165 }, 181 },
166 { 182 {
167 .ctl_name = NET_SCTP_RTO_ALPHA, 183 .ctl_name = NET_SCTP_RTO_ALPHA,
168 .procname = "rto_alpha_exp_divisor", 184 .procname = "rto_alpha_exp_divisor",
169 .data = &sctp_rto_alpha, 185 .data = &sctp_rto_alpha,
170 .maxlen = sizeof(int), 186 .maxlen = sizeof(int),
171 .mode = 0644, 187 .mode = 0444,
172 .proc_handler = &proc_dointvec 188 .proc_handler = &proc_dointvec,
189 .strategy = &sysctl_intvec
173 }, 190 },
174 { 191 {
175 .ctl_name = NET_SCTP_RTO_BETA, 192 .ctl_name = NET_SCTP_RTO_BETA,
176 .procname = "rto_beta_exp_divisor", 193 .procname = "rto_beta_exp_divisor",
177 .data = &sctp_rto_beta, 194 .data = &sctp_rto_beta,
178 .maxlen = sizeof(int), 195 .maxlen = sizeof(int),
179 .mode = 0644, 196 .mode = 0444,
180 .proc_handler = &proc_dointvec 197 .proc_handler = &proc_dointvec,
198 .strategy = &sysctl_intvec
181 }, 199 },
182 { 200 {
183 .ctl_name = NET_SCTP_ADDIP_ENABLE, 201 .ctl_name = NET_SCTP_ADDIP_ENABLE,
@@ -185,7 +203,8 @@ static ctl_table sctp_table[] = {
185 .data = &sctp_addip_enable, 203 .data = &sctp_addip_enable,
186 .maxlen = sizeof(int), 204 .maxlen = sizeof(int),
187 .mode = 0644, 205 .mode = 0644,
188 .proc_handler = &proc_dointvec 206 .proc_handler = &proc_dointvec,
207 .strategy = &sysctl_intvec
189 }, 208 },
190 { 209 {
191 .ctl_name = NET_SCTP_PRSCTP_ENABLE, 210 .ctl_name = NET_SCTP_PRSCTP_ENABLE,
@@ -193,7 +212,8 @@ static ctl_table sctp_table[] = {
193 .data = &sctp_prsctp_enable, 212 .data = &sctp_prsctp_enable,
194 .maxlen = sizeof(int), 213 .maxlen = sizeof(int),
195 .mode = 0644, 214 .mode = 0644,
196 .proc_handler = &proc_dointvec 215 .proc_handler = &proc_dointvec,
216 .strategy = &sysctl_intvec
197 }, 217 },
198 { 218 {
199 .ctl_name = NET_SCTP_SACK_TIMEOUT, 219 .ctl_name = NET_SCTP_SACK_TIMEOUT,
@@ -201,8 +221,8 @@ static ctl_table sctp_table[] = {
201 .data = &sctp_sack_timeout, 221 .data = &sctp_sack_timeout,
202 .maxlen = sizeof(long), 222 .maxlen = sizeof(long),
203 .mode = 0644, 223 .mode = 0644,
204 .proc_handler = &proc_doulongvec_ms_jiffies_minmax, 224 .proc_handler = &proc_dointvec_minmax,
205 .strategy = &sctp_sysctl_jiffies_ms, 225 .strategy = &sysctl_intvec,
206 .extra1 = &sack_timer_min, 226 .extra1 = &sack_timer_min,
207 .extra2 = &sack_timer_max, 227 .extra2 = &sack_timer_max,
208 }, 228 },
@@ -242,37 +262,3 @@ void sctp_sysctl_unregister(void)
242{ 262{
243 unregister_sysctl_table(sctp_sysctl_header); 263 unregister_sysctl_table(sctp_sysctl_header);
244} 264}
245
246/* Strategy function to convert jiffies to milliseconds. */
247static int sctp_sysctl_jiffies_ms(ctl_table *table, int __user *name, int nlen,
248 void __user *oldval, size_t __user *oldlenp,
249 void __user *newval, size_t newlen, void **context) {
250
251 if (oldval) {
252 size_t olen;
253
254 if (oldlenp) {
255 if (get_user(olen, oldlenp))
256 return -EFAULT;
257
258 if (olen != sizeof (int))
259 return -EINVAL;
260 }
261 if (put_user((*(int *)(table->data) * 1000) / HZ,
262 (int __user *)oldval) ||
263 (oldlenp && put_user(sizeof (int), oldlenp)))
264 return -EFAULT;
265 }
266 if (newval && newlen) {
267 int new;
268
269 if (newlen != sizeof (int))
270 return -EINVAL;
271
272 if (get_user(new, (int __user *)newval))
273 return -EFAULT;
274
275 *(int *)(table->data) = (new * HZ) / 1000;
276 }
277 return 1;
278}
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-07 13:22:58 -0400