1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2012 David Hoeppner. All rights reserved.
14 */
15
16 #include <sys/types.h>
17 #include <sys/stream.h>
18 #include <sys/debug.h>
19 #include <sys/cmn_err.h>
20 #include <inet/dccp_impl.h>
21 #include <inet/dccp_stack.h>
22
23 /*
24 * This file contains functions to parse and process DCCP options.
25 */
26
27
28 /*
29 * Parse the options in a DCCP header.
30 */
31 int
32 dccp_parse_options(dccp_t *dccp, dccpha_t *dccpha)
33 {
34 uchar_t *end;
35 uchar_t *up;
36 uint8_t dccp_type;
37 uint32_t option_value;
38 uint8_t option_type;
39 uint8_t option_length;
110 case DCCP_OPTION_NDP_COUNT:
111 cmn_err(CE_NOTE, "NDP COUNT");
112 if (option_length > 6)
113 goto option_error;
114 break;
115 case DCCP_OPTION_ACK_VECTOR_1:
116 cmn_err(CE_NOTE, "ACK VECTOR 1");
117 break;
118 case DCCP_OPTION_ACK_VECTOR_2:
119 cmn_err(CE_NOTE, "ACK VECTOR 2");
120 break;
121 case DCCP_OPTION_DATA_DROPPED:
122 cmn_err(CE_NOTE, "DATA DROPPED");
123 break;
124 case DCCP_OPTION_TIMESTAMP:
125 cmn_err(CE_NOTE, "TIMESTAMP");
126 if (option_length != 4)
127 goto option_error;
128
129 /* XXX read unaligned big endian */
130 option_value = ((uint8_t)value[0] << 31);
131 if (option_value) {
132 cmn_err(CE_NOTE, "Zero timestamp");
133 break;
134 }
135
136 dccp->dccp_timestamp_echo = ntohs(option_value);
137 dccp->dccp_timestamp = gethrtime();
138 break;
139 case DCCP_OPTION_TIMESTAMP_ECHO:
140 cmn_err(CE_NOTE, "TIMESTAMP ECHO");
141 if (option_length != 4 &&
142 option_length != 6 &&
143 option_length != 8) {
144 goto option_error;
145 }
146
147 break;
148 case DCCP_OPTION_ELAPSED_TIME:
149 cmn_err(CE_NOTE, "ELAPSES TIME");
150 switch (option_length) {
151 case 2:
152 break;
153 case 4:
154 break;
155 default:
156 goto option_error;
157 }
245 len++;
246 buf[len] = 0;
247 len++;
248 }
249
250 if (feature->df_type == DCCP_FEATURE_ECN_INCAPABLE) {
251 buf[len] = option_type;
252 len++;
253 buf[len] = 4;
254 len++;
255 buf[len] = feature->df_type;
256 len++;
257 buf[len] = 1;
258 len++;
259 }
260 }
261
262 if (dccp->dccp_timestamp_echo != 0) {
263 uint32_t elapsed;
264 int elapsed_length;
265
266 buf[len] = DCCP_OPTION_TIMESTAMP_ECHO;
267 len++;
268
269 elapsed = gethrtime() - dccp->dccp_timestamp;
270
271 dccp->dccp_timestamp_echo = 0;
272 }
273
274 total_len = ((len + (4 - 1)) / 4) * 4;
275 options = kmem_zalloc(total_len, KM_SLEEP);
276 if (options == NULL) {
277 cmn_err(CE_NOTE, "kmem_zalloc failed");
278 return (ENOMEM);
279 }
280 memcpy(options, buf, len);
281
282 *opt = options;
283 *opt_len = len;
284
285 return (0);
286 }
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1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2012 David Hoeppner. All rights reserved.
14 */
15
16 #include <sys/types.h>
17 #include <sys/stream.h>
18 #include <sys/debug.h>
19 #include <sys/cmn_err.h>
20
21 #include <inet/dccp_impl.h>
22 #include <inet/dccp_stack.h>
23
24 /*
25 * This file contains functions to parse and process DCCP options.
26 */
27
28
29 /*
30 * Parse the options in a DCCP header.
31 */
32 int
33 dccp_parse_options(dccp_t *dccp, dccpha_t *dccpha)
34 {
35 uchar_t *end;
36 uchar_t *up;
37 uint8_t dccp_type;
38 uint32_t option_value;
39 uint8_t option_type;
40 uint8_t option_length;
111 case DCCP_OPTION_NDP_COUNT:
112 cmn_err(CE_NOTE, "NDP COUNT");
113 if (option_length > 6)
114 goto option_error;
115 break;
116 case DCCP_OPTION_ACK_VECTOR_1:
117 cmn_err(CE_NOTE, "ACK VECTOR 1");
118 break;
119 case DCCP_OPTION_ACK_VECTOR_2:
120 cmn_err(CE_NOTE, "ACK VECTOR 2");
121 break;
122 case DCCP_OPTION_DATA_DROPPED:
123 cmn_err(CE_NOTE, "DATA DROPPED");
124 break;
125 case DCCP_OPTION_TIMESTAMP:
126 cmn_err(CE_NOTE, "TIMESTAMP");
127 if (option_length != 4)
128 goto option_error;
129
130 /* XXX read unaligned big endian */
131 option_value = ((uint8_t)value[0] << 24);
132 option_value += ((uint8_t)value[1] << 16);
133 option_value += ((uint8_t)value[2] << 8);
134 option_value += (uint8_t)value[3];
135 if (option_value) {
136 cmn_err(CE_NOTE, "Zero timestamp");
137 break;
138 }
139
140 dccp->dccp_timestamp_echo = ntohs(option_value);
141 dccp->dccp_timestamp = TICK_TO_MSEC(LBOLT_FASTPATH);
142 break;
143 case DCCP_OPTION_TIMESTAMP_ECHO:
144 cmn_err(CE_NOTE, "TIMESTAMP ECHO");
145 if (option_length != 4 &&
146 option_length != 6 &&
147 option_length != 8) {
148 goto option_error;
149 }
150
151 break;
152 case DCCP_OPTION_ELAPSED_TIME:
153 cmn_err(CE_NOTE, "ELAPSES TIME");
154 switch (option_length) {
155 case 2:
156 break;
157 case 4:
158 break;
159 default:
160 goto option_error;
161 }
249 len++;
250 buf[len] = 0;
251 len++;
252 }
253
254 if (feature->df_type == DCCP_FEATURE_ECN_INCAPABLE) {
255 buf[len] = option_type;
256 len++;
257 buf[len] = 4;
258 len++;
259 buf[len] = feature->df_type;
260 len++;
261 buf[len] = 1;
262 len++;
263 }
264 }
265
266 if (dccp->dccp_timestamp_echo != 0) {
267 uint32_t elapsed;
268 int elapsed_length;
269 clock_t now;
270
271 buf[len] = DCCP_OPTION_TIMESTAMP_ECHO;
272 len++;
273 buf[len] = 10;
274 len++;
275
276 now = TICK_TO_MSEC(LBOLT_FASTPATH);
277 elapsed = now - dccp->dccp_timestamp;
278
279
280 dccp->dccp_timestamp_echo = 0;
281 }
282
283 total_len = ((len + (4 - 1)) / 4) * 4;
284 options = kmem_zalloc(total_len, KM_SLEEP);
285 if (options == NULL) {
286 cmn_err(CE_NOTE, "kmem_zalloc failed");
287 return (ENOMEM);
288 }
289 memcpy(options, buf, len);
290
291 *opt = options;
292 *opt_len = len;
293
294 return (0);
295 }
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