2 * lib/route/sch/dsmark.c DSMARK
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
9 * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
15 * @defgroup dsmark Differentiated Services Marker (DSMARK)
19 #include <netlink-local.h>
20 #include <netlink-tc.h>
21 #include <netlink/netlink.h>
22 #include <netlink/utils.h>
23 #include <netlink/route/qdisc.h>
24 #include <netlink/route/qdisc-modules.h>
25 #include <netlink/route/class.h>
26 #include <netlink/route/class-modules.h>
27 #include <netlink/route/sch/dsmark.h>
30 #define SCH_DSMARK_ATTR_INDICES 0x1
31 #define SCH_DSMARK_ATTR_DEFAULT_INDEX 0x2
32 #define SCH_DSMARK_ATTR_SET_TC_INDEX 0x4
34 #define SCH_DSMARK_ATTR_MASK 0x1
35 #define SCH_DSMARK_ATTR_VALUE 0x2
38 static inline struct rtnl_dsmark_qdisc *dsmark_qdisc(struct rtnl_qdisc *qdisc)
40 return (struct rtnl_dsmark_qdisc *) qdisc->q_subdata;
43 static inline struct rtnl_dsmark_qdisc *
44 dsmark_qdisc_alloc(struct rtnl_qdisc *qdisc)
46 if (!qdisc->q_subdata)
47 qdisc->q_subdata = calloc(1, sizeof(struct rtnl_dsmark_qdisc));
49 return dsmark_qdisc(qdisc);
52 static struct nla_policy dsmark_policy[TCA_DSMARK_MAX+1] = {
53 [TCA_DSMARK_INDICES] = { .type = NLA_U16 },
54 [TCA_DSMARK_DEFAULT_INDEX] = { .type = NLA_U16 },
55 [TCA_DSMARK_SET_TC_INDEX] = { .type = NLA_FLAG },
56 [TCA_DSMARK_VALUE] = { .type = NLA_U8 },
57 [TCA_DSMARK_MASK] = { .type = NLA_U8 },
60 static int dsmark_qdisc_msg_parser(struct rtnl_qdisc *qdisc)
63 struct nlattr *tb[TCA_DSMARK_MAX + 1];
64 struct rtnl_dsmark_qdisc *dsmark;
66 err = tca_parse(tb, TCA_DSMARK_MAX, (struct rtnl_tca *) qdisc,
71 dsmark = dsmark_qdisc_alloc(qdisc);
73 return nl_errno(ENOMEM);
75 if (tb[TCA_DSMARK_INDICES]) {
76 dsmark->qdm_indices = nla_get_u16(tb[TCA_DSMARK_INDICES]);
77 dsmark->qdm_mask |= SCH_DSMARK_ATTR_INDICES;
80 if (tb[TCA_DSMARK_DEFAULT_INDEX]) {
81 dsmark->qdm_default_index =
82 nla_get_u16(tb[TCA_DSMARK_DEFAULT_INDEX]);
83 dsmark->qdm_mask |= SCH_DSMARK_ATTR_DEFAULT_INDEX;
86 if (tb[TCA_DSMARK_SET_TC_INDEX]) {
87 dsmark->qdm_set_tc_index = 1;
88 dsmark->qdm_mask |= SCH_DSMARK_ATTR_SET_TC_INDEX;
94 static inline struct rtnl_dsmark_class *dsmark_class(struct rtnl_class *class)
96 return (struct rtnl_dsmark_class *) class->c_subdata;
99 static inline struct rtnl_dsmark_class *
100 dsmark_class_alloc(struct rtnl_class *class)
102 if (!class->c_subdata)
103 class->c_subdata = calloc(1, sizeof(struct rtnl_dsmark_class));
105 return dsmark_class(class);
108 static int dsmark_class_msg_parser(struct rtnl_class *class)
111 struct nlattr *tb[TCA_DSMARK_MAX + 1];
112 struct rtnl_dsmark_class *dsmark;
114 err = tca_parse(tb, TCA_DSMARK_MAX, (struct rtnl_tca *) class,
119 dsmark = dsmark_class_alloc(class);
121 return nl_errno(ENOMEM);
123 if (tb[TCA_DSMARK_MASK]) {
124 dsmark->cdm_bmask = nla_get_u8(tb[TCA_DSMARK_MASK]);
125 dsmark->cdm_mask |= SCH_DSMARK_ATTR_MASK;
128 if (tb[TCA_DSMARK_VALUE]) {
129 dsmark->cdm_value = nla_get_u8(tb[TCA_DSMARK_VALUE]);
130 dsmark->cdm_mask |= SCH_DSMARK_ATTR_VALUE;
136 static int dsmark_qdisc_dump_brief(struct rtnl_qdisc *qdisc,
137 struct nl_dump_params *p, int line)
139 struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc);
141 if (dsmark && (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES))
142 dp_dump(p, " indices 0x%04x", dsmark->qdm_indices);
147 static int dsmark_qdisc_dump_full(struct rtnl_qdisc *qdisc,
148 struct nl_dump_params *p, int line)
150 struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc);
155 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
156 dp_dump(p, " default index 0x%04x", dsmark->qdm_default_index);
158 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
159 dp_dump(p, " set-tc-index");
165 static int dsmark_class_dump_brief(struct rtnl_class *class,
166 struct nl_dump_params *p, int line)
168 struct rtnl_dsmark_class *dsmark = dsmark_class(class);
173 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
174 dp_dump(p, " value 0x%02x", dsmark->cdm_value);
176 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
177 dp_dump(p, " mask 0x%02x", dsmark->cdm_bmask);
183 static struct nl_msg *dsmark_qdisc_get_opts(struct rtnl_qdisc *qdisc)
185 struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc);
191 msg = nlmsg_build_no_hdr();
193 goto nla_put_failure;
195 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES)
196 NLA_PUT_U16(msg, TCA_DSMARK_INDICES, dsmark->qdm_indices);
198 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
199 NLA_PUT_U16(msg, TCA_DSMARK_DEFAULT_INDEX,
200 dsmark->qdm_default_index);
202 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
203 NLA_PUT_FLAG(msg, TCA_DSMARK_SET_TC_INDEX);
212 static struct nl_msg *dsmark_class_get_opts(struct rtnl_class *class)
214 struct rtnl_dsmark_class *dsmark = dsmark_class(class);
220 msg = nlmsg_build_no_hdr();
222 goto nla_put_failure;
224 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
225 NLA_PUT_U8(msg, TCA_DSMARK_MASK, dsmark->cdm_bmask);
227 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
228 NLA_PUT_U8(msg, TCA_DSMARK_VALUE, dsmark->cdm_value);
238 * @name Class Attribute Access
243 * Set bitmask of DSMARK class.
244 * @arg class DSMARK class to be modified.
245 * @arg mask New bitmask.
246 * @return 0 on success or a negative error code.
248 int rtnl_class_dsmark_set_bitmask(struct rtnl_class *class, uint8_t mask)
250 struct rtnl_dsmark_class *dsmark;
252 dsmark = dsmark_class(class);
254 return nl_errno(ENOMEM);
256 dsmark->cdm_bmask = mask;
257 dsmark->cdm_mask |= SCH_DSMARK_ATTR_MASK;
263 * Get bitmask of DSMARK class.
264 * @arg class DSMARK class.
265 * @return Bitmask or a negative error code.
267 int rtnl_class_dsmark_get_bitmask(struct rtnl_class *class)
269 struct rtnl_dsmark_class *dsmark;
271 dsmark = dsmark_class(class);
272 if (dsmark && dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
273 return dsmark->cdm_bmask;
275 return nl_errno(ENOENT);
279 * Set value of DSMARK class.
280 * @arg class DSMARK class to be modified.
281 * @arg value New value.
282 * @return 0 on success or a negative errror code.
284 int rtnl_class_dsmark_set_value(struct rtnl_class *class, uint8_t value)
286 struct rtnl_dsmark_class *dsmark;
288 dsmark = dsmark_class(class);
290 return nl_errno(ENOMEM);
292 dsmark->cdm_value = value;
293 dsmark->cdm_mask |= SCH_DSMARK_ATTR_VALUE;
299 * Get value of DSMARK class.
300 * @arg class DSMARK class.
301 * @return Value or a negative error code.
303 int rtnl_class_dsmark_get_value(struct rtnl_class *class)
305 struct rtnl_dsmark_class *dsmark;
307 dsmark = dsmark_class(class);
308 if (dsmark && dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
309 return dsmark->cdm_value;
311 return nl_errno(ENOENT);
317 * @name Qdisc Attribute Access
322 * Set indices of DSMARK qdisc.
323 * @arg qdisc DSMARK qdisc to be modified.
324 * @arg indices New indices.
326 int rtnl_qdisc_dsmark_set_indices(struct rtnl_qdisc *qdisc, uint16_t indices)
328 struct rtnl_dsmark_qdisc *dsmark;
330 dsmark = dsmark_qdisc(qdisc);
332 return nl_errno(ENOMEM);
334 dsmark->qdm_indices = indices;
335 dsmark->qdm_mask |= SCH_DSMARK_ATTR_INDICES;
341 * Get indices of DSMARK qdisc.
342 * @arg qdisc DSMARK qdisc.
343 * @return Indices or a negative error code.
345 int rtnl_qdisc_dsmark_get_indices(struct rtnl_qdisc *qdisc)
347 struct rtnl_dsmark_qdisc *dsmark;
349 dsmark = dsmark_qdisc(qdisc);
350 if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES)
351 return dsmark->qdm_indices;
353 return nl_errno(ENOENT);
357 * Set default index of DSMARK qdisc.
358 * @arg qdisc DSMARK qdisc to be modified.
359 * @arg default_index New default index.
360 * @return 0 on success or a negative error code.
362 int rtnl_qdisc_dsmark_set_default_index(struct rtnl_qdisc *qdisc,
363 uint16_t default_index)
365 struct rtnl_dsmark_qdisc *dsmark;
367 dsmark = dsmark_qdisc(qdisc);
369 return nl_errno(ENOMEM);
371 dsmark->qdm_default_index = default_index;
372 dsmark->qdm_mask |= SCH_DSMARK_ATTR_DEFAULT_INDEX;
378 * Get default index of DSMARK qdisc.
379 * @arg qdisc DSMARK qdisc.
380 * @return Default index or a negative error code.
382 int rtnl_qdisc_dsmark_get_default_index(struct rtnl_qdisc *qdisc)
384 struct rtnl_dsmark_qdisc *dsmark;
386 dsmark = dsmark_qdisc(qdisc);
387 if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
388 return dsmark->qdm_default_index;
390 return nl_errno(ENOENT);
394 * Set set-tc-index flag of DSMARK qdisc.
395 * @arg qdisc DSMARK qdisc to be modified.
396 * @arg flag Flag indicating whether to enable or disable.
397 * @return 0 on success or a negative error code.
399 int rtnl_qdisc_dsmark_set_set_tc_index(struct rtnl_qdisc *qdisc, int flag)
401 struct rtnl_dsmark_qdisc *dsmark;
403 dsmark = dsmark_qdisc(qdisc);
405 return nl_errno(ENOMEM);
407 dsmark->qdm_set_tc_index = !!flag;
408 dsmark->qdm_mask |= SCH_DSMARK_ATTR_SET_TC_INDEX;
414 * Get set-tc-index flag of DSMARK qdisc.
415 * @arg qdisc DSMARK qdisc to be modified.
416 * @return 1 or 0 to indicate wehther the flag is enabled or a negative
419 int rtnl_qdisc_dsmark_get_set_tc_index(struct rtnl_qdisc *qdisc)
421 struct rtnl_dsmark_qdisc *dsmark;
423 dsmark = dsmark_qdisc(qdisc);
424 if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
425 return dsmark->qdm_set_tc_index;
427 return nl_errno(ENOENT);
432 static struct rtnl_qdisc_ops dsmark_qdisc_ops = {
434 .qo_msg_parser = dsmark_qdisc_msg_parser,
435 .qo_dump[NL_DUMP_BRIEF] = dsmark_qdisc_dump_brief,
436 .qo_dump[NL_DUMP_FULL] = dsmark_qdisc_dump_full,
437 .qo_get_opts = dsmark_qdisc_get_opts,
440 static struct rtnl_class_ops dsmark_class_ops = {
442 .co_msg_parser = dsmark_class_msg_parser,
443 .co_dump[NL_DUMP_BRIEF] = dsmark_class_dump_brief,
444 .co_get_opts = dsmark_class_get_opts,
447 static void __init dsmark_init(void)
449 rtnl_qdisc_register(&dsmark_qdisc_ops);
450 rtnl_class_register(&dsmark_class_ops);
453 static void __exit dsmark_exit(void)
455 rtnl_qdisc_unregister(&dsmark_qdisc_ops);
456 rtnl_class_unregister(&dsmark_class_ops);