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) 2003-2008 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);
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);
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 void dsmark_qdisc_dump_line(struct rtnl_qdisc *qdisc,
137 struct nl_dump_params *p)
139 struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc);
141 if (dsmark && (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES))
142 nl_dump(p, " indices 0x%04x", dsmark->qdm_indices);
145 static void dsmark_qdisc_dump_details(struct rtnl_qdisc *qdisc,
146 struct nl_dump_params *p)
148 struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc);
153 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
154 nl_dump(p, " default index 0x%04x", dsmark->qdm_default_index);
156 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
157 nl_dump(p, " set-tc-index");
160 static void dsmark_class_dump_line(struct rtnl_class *class,
161 struct nl_dump_params *p)
163 struct rtnl_dsmark_class *dsmark = dsmark_class(class);
168 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
169 nl_dump(p, " value 0x%02x", dsmark->cdm_value);
171 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
172 nl_dump(p, " mask 0x%02x", dsmark->cdm_bmask);
175 static struct nl_msg *dsmark_qdisc_get_opts(struct rtnl_qdisc *qdisc)
177 struct rtnl_dsmark_qdisc *dsmark = dsmark_qdisc(qdisc);
185 goto nla_put_failure;
187 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES)
188 NLA_PUT_U16(msg, TCA_DSMARK_INDICES, dsmark->qdm_indices);
190 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
191 NLA_PUT_U16(msg, TCA_DSMARK_DEFAULT_INDEX,
192 dsmark->qdm_default_index);
194 if (dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
195 NLA_PUT_FLAG(msg, TCA_DSMARK_SET_TC_INDEX);
204 static struct nl_msg *dsmark_class_get_opts(struct rtnl_class *class)
206 struct rtnl_dsmark_class *dsmark = dsmark_class(class);
214 goto nla_put_failure;
216 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
217 NLA_PUT_U8(msg, TCA_DSMARK_MASK, dsmark->cdm_bmask);
219 if (dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
220 NLA_PUT_U8(msg, TCA_DSMARK_VALUE, dsmark->cdm_value);
230 * @name Class Attribute Access
235 * Set bitmask of DSMARK class.
236 * @arg class DSMARK class to be modified.
237 * @arg mask New bitmask.
238 * @return 0 on success or a negative error code.
240 int rtnl_class_dsmark_set_bitmask(struct rtnl_class *class, uint8_t mask)
242 struct rtnl_dsmark_class *dsmark;
244 dsmark = dsmark_class(class);
248 dsmark->cdm_bmask = mask;
249 dsmark->cdm_mask |= SCH_DSMARK_ATTR_MASK;
255 * Get bitmask of DSMARK class.
256 * @arg class DSMARK class.
257 * @return Bitmask or a negative error code.
259 int rtnl_class_dsmark_get_bitmask(struct rtnl_class *class)
261 struct rtnl_dsmark_class *dsmark;
263 dsmark = dsmark_class(class);
264 if (dsmark && dsmark->cdm_mask & SCH_DSMARK_ATTR_MASK)
265 return dsmark->cdm_bmask;
271 * Set value of DSMARK class.
272 * @arg class DSMARK class to be modified.
273 * @arg value New value.
274 * @return 0 on success or a negative errror code.
276 int rtnl_class_dsmark_set_value(struct rtnl_class *class, uint8_t value)
278 struct rtnl_dsmark_class *dsmark;
280 dsmark = dsmark_class(class);
284 dsmark->cdm_value = value;
285 dsmark->cdm_mask |= SCH_DSMARK_ATTR_VALUE;
291 * Get value of DSMARK class.
292 * @arg class DSMARK class.
293 * @return Value or a negative error code.
295 int rtnl_class_dsmark_get_value(struct rtnl_class *class)
297 struct rtnl_dsmark_class *dsmark;
299 dsmark = dsmark_class(class);
300 if (dsmark && dsmark->cdm_mask & SCH_DSMARK_ATTR_VALUE)
301 return dsmark->cdm_value;
309 * @name Qdisc Attribute Access
314 * Set indices of DSMARK qdisc.
315 * @arg qdisc DSMARK qdisc to be modified.
316 * @arg indices New indices.
318 int rtnl_qdisc_dsmark_set_indices(struct rtnl_qdisc *qdisc, uint16_t indices)
320 struct rtnl_dsmark_qdisc *dsmark;
322 dsmark = dsmark_qdisc(qdisc);
326 dsmark->qdm_indices = indices;
327 dsmark->qdm_mask |= SCH_DSMARK_ATTR_INDICES;
333 * Get indices of DSMARK qdisc.
334 * @arg qdisc DSMARK qdisc.
335 * @return Indices or a negative error code.
337 int rtnl_qdisc_dsmark_get_indices(struct rtnl_qdisc *qdisc)
339 struct rtnl_dsmark_qdisc *dsmark;
341 dsmark = dsmark_qdisc(qdisc);
342 if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_INDICES)
343 return dsmark->qdm_indices;
349 * Set default index of DSMARK qdisc.
350 * @arg qdisc DSMARK qdisc to be modified.
351 * @arg default_index New default index.
352 * @return 0 on success or a negative error code.
354 int rtnl_qdisc_dsmark_set_default_index(struct rtnl_qdisc *qdisc,
355 uint16_t default_index)
357 struct rtnl_dsmark_qdisc *dsmark;
359 dsmark = dsmark_qdisc(qdisc);
363 dsmark->qdm_default_index = default_index;
364 dsmark->qdm_mask |= SCH_DSMARK_ATTR_DEFAULT_INDEX;
370 * Get default index of DSMARK qdisc.
371 * @arg qdisc DSMARK qdisc.
372 * @return Default index or a negative error code.
374 int rtnl_qdisc_dsmark_get_default_index(struct rtnl_qdisc *qdisc)
376 struct rtnl_dsmark_qdisc *dsmark;
378 dsmark = dsmark_qdisc(qdisc);
379 if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_DEFAULT_INDEX)
380 return dsmark->qdm_default_index;
386 * Set set-tc-index flag of DSMARK qdisc.
387 * @arg qdisc DSMARK qdisc to be modified.
388 * @arg flag Flag indicating whether to enable or disable.
389 * @return 0 on success or a negative error code.
391 int rtnl_qdisc_dsmark_set_set_tc_index(struct rtnl_qdisc *qdisc, int flag)
393 struct rtnl_dsmark_qdisc *dsmark;
395 dsmark = dsmark_qdisc(qdisc);
399 dsmark->qdm_set_tc_index = !!flag;
400 dsmark->qdm_mask |= SCH_DSMARK_ATTR_SET_TC_INDEX;
406 * Get set-tc-index flag of DSMARK qdisc.
407 * @arg qdisc DSMARK qdisc to be modified.
408 * @return 1 or 0 to indicate wehther the flag is enabled or a negative
411 int rtnl_qdisc_dsmark_get_set_tc_index(struct rtnl_qdisc *qdisc)
413 struct rtnl_dsmark_qdisc *dsmark;
415 dsmark = dsmark_qdisc(qdisc);
416 if (dsmark && dsmark->qdm_mask & SCH_DSMARK_ATTR_SET_TC_INDEX)
417 return dsmark->qdm_set_tc_index;
424 static struct rtnl_qdisc_ops dsmark_qdisc_ops = {
426 .qo_msg_parser = dsmark_qdisc_msg_parser,
428 [NL_DUMP_LINE] = dsmark_qdisc_dump_line,
429 [NL_DUMP_DETAILS] = dsmark_qdisc_dump_details,
431 .qo_get_opts = dsmark_qdisc_get_opts,
434 static struct rtnl_class_ops dsmark_class_ops = {
436 .co_msg_parser = dsmark_class_msg_parser,
437 .co_dump[NL_DUMP_LINE] = dsmark_class_dump_line,
438 .co_get_opts = dsmark_class_get_opts,
441 static void __init dsmark_init(void)
443 rtnl_qdisc_register(&dsmark_qdisc_ops);
444 rtnl_class_register(&dsmark_class_ops);
447 static void __exit dsmark_exit(void)
449 rtnl_qdisc_unregister(&dsmark_qdisc_ops);
450 rtnl_class_unregister(&dsmark_class_ops);