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Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* net/sched/sch_dsmark.c - Differentiated Services field marker */ |
2 | ||
3 | /* Written 1998-2000 by Werner Almesberger, EPFL ICA */ | |
4 | ||
5 | ||
1da177e4 LT |
6 | #include <linux/module.h> |
7 | #include <linux/init.h> | |
5a0e3ad6 | 8 | #include <linux/slab.h> |
1da177e4 LT |
9 | #include <linux/types.h> |
10 | #include <linux/string.h> | |
11 | #include <linux/errno.h> | |
12 | #include <linux/skbuff.h> | |
1da177e4 | 13 | #include <linux/rtnetlink.h> |
5b0ac72b | 14 | #include <linux/bitops.h> |
1da177e4 | 15 | #include <net/pkt_sched.h> |
cf1facda | 16 | #include <net/pkt_cls.h> |
1da177e4 LT |
17 | #include <net/dsfield.h> |
18 | #include <net/inet_ecn.h> | |
19 | #include <asm/byteorder.h> | |
20 | ||
1da177e4 LT |
21 | /* |
22 | * classid class marking | |
23 | * ------- ----- ------- | |
24 | * n/a 0 n/a | |
25 | * x:0 1 use entry [0] | |
26 | * ... ... ... | |
27 | * x:y y>0 y+1 use entry [y] | |
28 | * ... ... ... | |
29 | * x:indices-1 indices use entry [indices-1] | |
30 | * ... ... ... | |
31 | * x:y y+1 use entry [y & (indices-1)] | |
32 | * ... ... ... | |
33 | * 0xffff 0x10000 use entry [indices-1] | |
34 | */ | |
35 | ||
36 | ||
37 | #define NO_DEFAULT_INDEX (1 << 16) | |
38 | ||
47bbbb30 ED |
39 | struct mask_value { |
40 | u8 mask; | |
41 | u8 value; | |
42 | }; | |
43 | ||
1da177e4 LT |
44 | struct dsmark_qdisc_data { |
45 | struct Qdisc *q; | |
25d8c0d5 | 46 | struct tcf_proto __rcu *filter_list; |
6529eaba | 47 | struct tcf_block *block; |
47bbbb30 | 48 | struct mask_value *mv; |
af0d1141 | 49 | u16 indices; |
47bbbb30 | 50 | u8 set_tc_index; |
af0d1141 | 51 | u32 default_index; /* index range is 0...0xffff */ |
47bbbb30 ED |
52 | #define DSMARK_EMBEDDED_SZ 16 |
53 | struct mask_value embedded[DSMARK_EMBEDDED_SZ]; | |
1da177e4 LT |
54 | }; |
55 | ||
758cc43c TG |
56 | static inline int dsmark_valid_index(struct dsmark_qdisc_data *p, u16 index) |
57 | { | |
17569fae | 58 | return index <= p->indices && index > 0; |
758cc43c | 59 | } |
1da177e4 LT |
60 | |
61 | /* ------------------------- Class/flow operations ------------------------- */ | |
62 | ||
af0d1141 TG |
63 | static int dsmark_graft(struct Qdisc *sch, unsigned long arg, |
64 | struct Qdisc *new, struct Qdisc **old) | |
1da177e4 | 65 | { |
81da99ed | 66 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 67 | |
c76f2a2c YY |
68 | pr_debug("%s(sch %p,[qdisc %p],new %p,old %p)\n", |
69 | __func__, sch, p, new, old); | |
486b53e5 TG |
70 | |
71 | if (new == NULL) { | |
3511c913 | 72 | new = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, |
9f9afec4 | 73 | sch->handle); |
486b53e5 TG |
74 | if (new == NULL) |
75 | new = &noop_qdisc; | |
76 | } | |
77 | ||
86a7996c | 78 | *old = qdisc_replace(sch, new, &p->q); |
10297b99 | 79 | return 0; |
1da177e4 LT |
80 | } |
81 | ||
1da177e4 LT |
82 | static struct Qdisc *dsmark_leaf(struct Qdisc *sch, unsigned long arg) |
83 | { | |
81da99ed SH |
84 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
85 | return p->q; | |
1da177e4 LT |
86 | } |
87 | ||
af0d1141 | 88 | static unsigned long dsmark_get(struct Qdisc *sch, u32 classid) |
1da177e4 | 89 | { |
c76f2a2c YY |
90 | pr_debug("%s(sch %p,[qdisc %p],classid %x)\n", |
91 | __func__, sch, qdisc_priv(sch), classid); | |
1da177e4 | 92 | |
af0d1141 | 93 | return TC_H_MIN(classid) + 1; |
1da177e4 LT |
94 | } |
95 | ||
1da177e4 | 96 | static unsigned long dsmark_bind_filter(struct Qdisc *sch, |
af0d1141 | 97 | unsigned long parent, u32 classid) |
1da177e4 | 98 | { |
af0d1141 | 99 | return dsmark_get(sch, classid); |
1da177e4 LT |
100 | } |
101 | ||
1da177e4 LT |
102 | static void dsmark_put(struct Qdisc *sch, unsigned long cl) |
103 | { | |
104 | } | |
105 | ||
27a3421e PM |
106 | static const struct nla_policy dsmark_policy[TCA_DSMARK_MAX + 1] = { |
107 | [TCA_DSMARK_INDICES] = { .type = NLA_U16 }, | |
108 | [TCA_DSMARK_DEFAULT_INDEX] = { .type = NLA_U16 }, | |
109 | [TCA_DSMARK_SET_TC_INDEX] = { .type = NLA_FLAG }, | |
110 | [TCA_DSMARK_MASK] = { .type = NLA_U8 }, | |
111 | [TCA_DSMARK_VALUE] = { .type = NLA_U8 }, | |
112 | }; | |
113 | ||
1da177e4 | 114 | static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent, |
1e90474c | 115 | struct nlattr **tca, unsigned long *arg) |
1da177e4 | 116 | { |
81da99ed | 117 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c PM |
118 | struct nlattr *opt = tca[TCA_OPTIONS]; |
119 | struct nlattr *tb[TCA_DSMARK_MAX + 1]; | |
758cc43c | 120 | int err = -EINVAL; |
1da177e4 | 121 | |
c76f2a2c YY |
122 | pr_debug("%s(sch %p,[qdisc %p],classid %x,parent %x), arg 0x%lx\n", |
123 | __func__, sch, p, classid, parent, *arg); | |
758cc43c TG |
124 | |
125 | if (!dsmark_valid_index(p, *arg)) { | |
126 | err = -ENOENT; | |
1e90474c | 127 | goto errout; |
1da177e4 | 128 | } |
1da177e4 | 129 | |
cee63723 | 130 | if (!opt) |
1e90474c | 131 | goto errout; |
758cc43c | 132 | |
fceb6435 | 133 | err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, dsmark_policy, NULL); |
cee63723 | 134 | if (err < 0) |
27a3421e | 135 | goto errout; |
cee63723 | 136 | |
27a3421e | 137 | if (tb[TCA_DSMARK_VALUE]) |
47bbbb30 | 138 | p->mv[*arg - 1].value = nla_get_u8(tb[TCA_DSMARK_VALUE]); |
10297b99 | 139 | |
1e90474c | 140 | if (tb[TCA_DSMARK_MASK]) |
47bbbb30 | 141 | p->mv[*arg - 1].mask = nla_get_u8(tb[TCA_DSMARK_MASK]); |
758cc43c TG |
142 | |
143 | err = 0; | |
144 | ||
1e90474c | 145 | errout: |
758cc43c TG |
146 | return err; |
147 | } | |
1da177e4 | 148 | |
af0d1141 | 149 | static int dsmark_delete(struct Qdisc *sch, unsigned long arg) |
1da177e4 | 150 | { |
81da99ed | 151 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 152 | |
af0d1141 | 153 | if (!dsmark_valid_index(p, arg)) |
1da177e4 | 154 | return -EINVAL; |
10297b99 | 155 | |
47bbbb30 ED |
156 | p->mv[arg - 1].mask = 0xff; |
157 | p->mv[arg - 1].value = 0; | |
af0d1141 | 158 | |
1da177e4 LT |
159 | return 0; |
160 | } | |
161 | ||
9d127fbd | 162 | static void dsmark_walk(struct Qdisc *sch, struct qdisc_walker *walker) |
1da177e4 | 163 | { |
81da99ed | 164 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 LT |
165 | int i; |
166 | ||
c76f2a2c YY |
167 | pr_debug("%s(sch %p,[qdisc %p],walker %p)\n", |
168 | __func__, sch, p, walker); | |
af0d1141 | 169 | |
1da177e4 LT |
170 | if (walker->stop) |
171 | return; | |
af0d1141 | 172 | |
1da177e4 | 173 | for (i = 0; i < p->indices; i++) { |
47bbbb30 | 174 | if (p->mv[i].mask == 0xff && !p->mv[i].value) |
0451eb07 | 175 | goto ignore; |
1da177e4 | 176 | if (walker->count >= walker->skip) { |
cc7ec456 | 177 | if (walker->fn(sch, i + 1, walker) < 0) { |
1da177e4 LT |
178 | walker->stop = 1; |
179 | break; | |
180 | } | |
181 | } | |
10297b99 | 182 | ignore: |
0451eb07 | 183 | walker->count++; |
10297b99 | 184 | } |
1da177e4 LT |
185 | } |
186 | ||
6529eaba | 187 | static struct tcf_block *dsmark_tcf_block(struct Qdisc *sch, unsigned long cl) |
1da177e4 | 188 | { |
81da99ed | 189 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
6529eaba JP |
190 | |
191 | return p->block; | |
1da177e4 LT |
192 | } |
193 | ||
1da177e4 LT |
194 | /* --------------------------- Qdisc operations ---------------------------- */ |
195 | ||
520ac30f ED |
196 | static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch, |
197 | struct sk_buff **to_free) | |
1da177e4 | 198 | { |
81da99ed | 199 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
af0d1141 TG |
200 | int err; |
201 | ||
c76f2a2c | 202 | pr_debug("%s(skb %p,sch %p,[qdisc %p])\n", __func__, skb, sch, p); |
1da177e4 | 203 | |
1da177e4 | 204 | if (p->set_tc_index) { |
aea92fb2 ED |
205 | int wlen = skb_network_offset(skb); |
206 | ||
d8b9605d | 207 | switch (tc_skb_protocol(skb)) { |
60678040 | 208 | case htons(ETH_P_IP): |
aea92fb2 ED |
209 | wlen += sizeof(struct iphdr); |
210 | if (!pskb_may_pull(skb, wlen) || | |
211 | skb_try_make_writable(skb, wlen)) | |
9d127fbd | 212 | goto drop; |
4c30719f | 213 | |
9d127fbd SH |
214 | skb->tc_index = ipv4_get_dsfield(ip_hdr(skb)) |
215 | & ~INET_ECN_MASK; | |
216 | break; | |
4c30719f | 217 | |
60678040 | 218 | case htons(ETH_P_IPV6): |
aea92fb2 ED |
219 | wlen += sizeof(struct ipv6hdr); |
220 | if (!pskb_may_pull(skb, wlen) || | |
221 | skb_try_make_writable(skb, wlen)) | |
9d127fbd | 222 | goto drop; |
4c30719f | 223 | |
9d127fbd SH |
224 | skb->tc_index = ipv6_get_dsfield(ipv6_hdr(skb)) |
225 | & ~INET_ECN_MASK; | |
226 | break; | |
227 | default: | |
228 | skb->tc_index = 0; | |
229 | break; | |
3ff50b79 | 230 | } |
1da177e4 | 231 | } |
af0d1141 TG |
232 | |
233 | if (TC_H_MAJ(skb->priority) == sch->handle) | |
1da177e4 | 234 | skb->tc_index = TC_H_MIN(skb->priority); |
af0d1141 TG |
235 | else { |
236 | struct tcf_result res; | |
25d8c0d5 | 237 | struct tcf_proto *fl = rcu_dereference_bh(p->filter_list); |
87d83093 | 238 | int result = tcf_classify(skb, fl, &res, false); |
af0d1141 | 239 | |
81da99ed | 240 | pr_debug("result %d class 0x%04x\n", result, res.classid); |
af0d1141 | 241 | |
1da177e4 | 242 | switch (result) { |
f6853e2d PM |
243 | #ifdef CONFIG_NET_CLS_ACT |
244 | case TC_ACT_QUEUED: | |
245 | case TC_ACT_STOLEN: | |
e25ea21f | 246 | case TC_ACT_TRAP: |
520ac30f | 247 | __qdisc_drop(skb, to_free); |
378a2f09 | 248 | return NET_XMIT_SUCCESS | __NET_XMIT_STOLEN; |
4c30719f | 249 | |
f6853e2d | 250 | case TC_ACT_SHOT: |
4c30719f | 251 | goto drop; |
1da177e4 | 252 | #endif |
c3bc7cff | 253 | case TC_ACT_OK: |
f6853e2d PM |
254 | skb->tc_index = TC_H_MIN(res.classid); |
255 | break; | |
4c30719f | 256 | |
f6853e2d PM |
257 | default: |
258 | if (p->default_index != NO_DEFAULT_INDEX) | |
259 | skb->tc_index = p->default_index; | |
260 | break; | |
3ff50b79 | 261 | } |
1da177e4 | 262 | } |
1da177e4 | 263 | |
520ac30f | 264 | err = qdisc_enqueue(skb, p->q, to_free); |
af0d1141 | 265 | if (err != NET_XMIT_SUCCESS) { |
378a2f09 | 266 | if (net_xmit_drop_count(err)) |
25331d6c | 267 | qdisc_qstats_drop(sch); |
af0d1141 | 268 | return err; |
1da177e4 | 269 | } |
af0d1141 | 270 | |
bdf17661 | 271 | qdisc_qstats_backlog_inc(sch, skb); |
1da177e4 | 272 | sch->q.qlen++; |
1da177e4 | 273 | |
af0d1141 | 274 | return NET_XMIT_SUCCESS; |
4c30719f SH |
275 | |
276 | drop: | |
520ac30f | 277 | qdisc_drop(skb, sch, to_free); |
c27f339a | 278 | return NET_XMIT_SUCCESS | __NET_XMIT_BYPASS; |
af0d1141 | 279 | } |
1da177e4 LT |
280 | |
281 | static struct sk_buff *dsmark_dequeue(struct Qdisc *sch) | |
282 | { | |
81da99ed | 283 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 284 | struct sk_buff *skb; |
af0d1141 TG |
285 | u32 index; |
286 | ||
c76f2a2c | 287 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
1da177e4 | 288 | |
f8b33d8e | 289 | skb = qdisc_dequeue_peeked(p->q); |
af0d1141 | 290 | if (skb == NULL) |
1da177e4 | 291 | return NULL; |
af0d1141 | 292 | |
9190b3b3 | 293 | qdisc_bstats_update(sch, skb); |
bdf17661 | 294 | qdisc_qstats_backlog_dec(sch, skb); |
1da177e4 | 295 | sch->q.qlen--; |
af0d1141 TG |
296 | |
297 | index = skb->tc_index & (p->indices - 1); | |
81da99ed | 298 | pr_debug("index %d->%d\n", skb->tc_index, index); |
af0d1141 | 299 | |
d8b9605d | 300 | switch (tc_skb_protocol(skb)) { |
60678040 | 301 | case htons(ETH_P_IP): |
47bbbb30 ED |
302 | ipv4_change_dsfield(ip_hdr(skb), p->mv[index].mask, |
303 | p->mv[index].value); | |
1da177e4 | 304 | break; |
60678040 | 305 | case htons(ETH_P_IPV6): |
47bbbb30 ED |
306 | ipv6_change_dsfield(ipv6_hdr(skb), p->mv[index].mask, |
307 | p->mv[index].value); | |
1da177e4 | 308 | break; |
9d127fbd SH |
309 | default: |
310 | /* | |
311 | * Only complain if a change was actually attempted. | |
312 | * This way, we can send non-IP traffic through dsmark | |
313 | * and don't need yet another qdisc as a bypass. | |
314 | */ | |
47bbbb30 | 315 | if (p->mv[index].mask != 0xff || p->mv[index].value) |
c76f2a2c | 316 | pr_warn("%s: unsupported protocol %d\n", |
d8b9605d | 317 | __func__, ntohs(tc_skb_protocol(skb))); |
9d127fbd | 318 | break; |
3ff50b79 | 319 | } |
af0d1141 | 320 | |
1da177e4 LT |
321 | return skb; |
322 | } | |
323 | ||
8e3af978 JP |
324 | static struct sk_buff *dsmark_peek(struct Qdisc *sch) |
325 | { | |
326 | struct dsmark_qdisc_data *p = qdisc_priv(sch); | |
327 | ||
c76f2a2c | 328 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
8e3af978 JP |
329 | |
330 | return p->q->ops->peek(p->q); | |
331 | } | |
332 | ||
1e90474c | 333 | static int dsmark_init(struct Qdisc *sch, struct nlattr *opt) |
1da177e4 | 334 | { |
81da99ed | 335 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c | 336 | struct nlattr *tb[TCA_DSMARK_MAX + 1]; |
9d4f97f9 | 337 | int err = -EINVAL; |
758cc43c TG |
338 | u32 default_index = NO_DEFAULT_INDEX; |
339 | u16 indices; | |
47bbbb30 | 340 | int i; |
758cc43c | 341 | |
c76f2a2c | 342 | pr_debug("%s(sch %p,[qdisc %p],opt %p)\n", __func__, sch, p, opt); |
758cc43c | 343 | |
cee63723 PM |
344 | if (!opt) |
345 | goto errout; | |
346 | ||
6529eaba JP |
347 | err = tcf_block_get(&p->block, &p->filter_list); |
348 | if (err) | |
349 | return err; | |
350 | ||
fceb6435 | 351 | err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, dsmark_policy, NULL); |
cee63723 | 352 | if (err < 0) |
758cc43c TG |
353 | goto errout; |
354 | ||
cee63723 | 355 | err = -EINVAL; |
1e90474c | 356 | indices = nla_get_u16(tb[TCA_DSMARK_INDICES]); |
5b0ac72b DM |
357 | |
358 | if (hweight32(indices) != 1) | |
758cc43c TG |
359 | goto errout; |
360 | ||
27a3421e | 361 | if (tb[TCA_DSMARK_DEFAULT_INDEX]) |
1e90474c | 362 | default_index = nla_get_u16(tb[TCA_DSMARK_DEFAULT_INDEX]); |
758cc43c | 363 | |
47bbbb30 ED |
364 | if (indices <= DSMARK_EMBEDDED_SZ) |
365 | p->mv = p->embedded; | |
366 | else | |
367 | p->mv = kmalloc_array(indices, sizeof(*p->mv), GFP_KERNEL); | |
368 | if (!p->mv) { | |
758cc43c TG |
369 | err = -ENOMEM; |
370 | goto errout; | |
1da177e4 | 371 | } |
47bbbb30 ED |
372 | for (i = 0; i < indices; i++) { |
373 | p->mv[i].mask = 0xff; | |
374 | p->mv[i].value = 0; | |
375 | } | |
758cc43c TG |
376 | p->indices = indices; |
377 | p->default_index = default_index; | |
1e90474c | 378 | p->set_tc_index = nla_get_flag(tb[TCA_DSMARK_SET_TC_INDEX]); |
758cc43c | 379 | |
3511c913 | 380 | p->q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, sch->handle); |
758cc43c | 381 | if (p->q == NULL) |
1da177e4 | 382 | p->q = &noop_qdisc; |
49b49971 JK |
383 | else |
384 | qdisc_hash_add(p->q, true); | |
758cc43c | 385 | |
c76f2a2c | 386 | pr_debug("%s: qdisc %p\n", __func__, p->q); |
758cc43c TG |
387 | |
388 | err = 0; | |
389 | errout: | |
758cc43c | 390 | return err; |
1da177e4 LT |
391 | } |
392 | ||
1da177e4 LT |
393 | static void dsmark_reset(struct Qdisc *sch) |
394 | { | |
81da99ed | 395 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 396 | |
c76f2a2c | 397 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
1da177e4 | 398 | qdisc_reset(p->q); |
bdf17661 | 399 | sch->qstats.backlog = 0; |
1da177e4 LT |
400 | sch->q.qlen = 0; |
401 | } | |
402 | ||
1da177e4 LT |
403 | static void dsmark_destroy(struct Qdisc *sch) |
404 | { | |
81da99ed | 405 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 406 | |
c76f2a2c | 407 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
af0d1141 | 408 | |
6529eaba | 409 | tcf_block_put(p->block); |
1da177e4 | 410 | qdisc_destroy(p->q); |
47bbbb30 ED |
411 | if (p->mv != p->embedded) |
412 | kfree(p->mv); | |
1da177e4 LT |
413 | } |
414 | ||
1da177e4 | 415 | static int dsmark_dump_class(struct Qdisc *sch, unsigned long cl, |
02f23f09 | 416 | struct sk_buff *skb, struct tcmsg *tcm) |
1da177e4 | 417 | { |
81da99ed | 418 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c | 419 | struct nlattr *opts = NULL; |
1da177e4 | 420 | |
c76f2a2c | 421 | pr_debug("%s(sch %p,[qdisc %p],class %ld\n", __func__, sch, p, cl); |
02f23f09 TG |
422 | |
423 | if (!dsmark_valid_index(p, cl)) | |
1da177e4 | 424 | return -EINVAL; |
02f23f09 | 425 | |
cc7ec456 | 426 | tcm->tcm_handle = TC_H_MAKE(TC_H_MAJ(sch->handle), cl - 1); |
cdc7f8e3 | 427 | tcm->tcm_info = p->q->handle; |
02f23f09 | 428 | |
1e90474c PM |
429 | opts = nla_nest_start(skb, TCA_OPTIONS); |
430 | if (opts == NULL) | |
431 | goto nla_put_failure; | |
47bbbb30 ED |
432 | if (nla_put_u8(skb, TCA_DSMARK_MASK, p->mv[cl - 1].mask) || |
433 | nla_put_u8(skb, TCA_DSMARK_VALUE, p->mv[cl - 1].value)) | |
1b34ec43 | 434 | goto nla_put_failure; |
02f23f09 | 435 | |
1e90474c | 436 | return nla_nest_end(skb, opts); |
1da177e4 | 437 | |
1e90474c | 438 | nla_put_failure: |
bc3ed28c TG |
439 | nla_nest_cancel(skb, opts); |
440 | return -EMSGSIZE; | |
1da177e4 LT |
441 | } |
442 | ||
443 | static int dsmark_dump(struct Qdisc *sch, struct sk_buff *skb) | |
444 | { | |
81da99ed | 445 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c | 446 | struct nlattr *opts = NULL; |
1da177e4 | 447 | |
1e90474c PM |
448 | opts = nla_nest_start(skb, TCA_OPTIONS); |
449 | if (opts == NULL) | |
450 | goto nla_put_failure; | |
1b34ec43 DM |
451 | if (nla_put_u16(skb, TCA_DSMARK_INDICES, p->indices)) |
452 | goto nla_put_failure; | |
02f23f09 | 453 | |
1b34ec43 DM |
454 | if (p->default_index != NO_DEFAULT_INDEX && |
455 | nla_put_u16(skb, TCA_DSMARK_DEFAULT_INDEX, p->default_index)) | |
456 | goto nla_put_failure; | |
1da177e4 | 457 | |
1b34ec43 DM |
458 | if (p->set_tc_index && |
459 | nla_put_flag(skb, TCA_DSMARK_SET_TC_INDEX)) | |
460 | goto nla_put_failure; | |
02f23f09 | 461 | |
1e90474c | 462 | return nla_nest_end(skb, opts); |
1da177e4 | 463 | |
1e90474c | 464 | nla_put_failure: |
bc3ed28c TG |
465 | nla_nest_cancel(skb, opts); |
466 | return -EMSGSIZE; | |
1da177e4 LT |
467 | } |
468 | ||
20fea08b | 469 | static const struct Qdisc_class_ops dsmark_class_ops = { |
1da177e4 LT |
470 | .graft = dsmark_graft, |
471 | .leaf = dsmark_leaf, | |
472 | .get = dsmark_get, | |
473 | .put = dsmark_put, | |
474 | .change = dsmark_change, | |
475 | .delete = dsmark_delete, | |
476 | .walk = dsmark_walk, | |
6529eaba | 477 | .tcf_block = dsmark_tcf_block, |
1da177e4 LT |
478 | .bind_tcf = dsmark_bind_filter, |
479 | .unbind_tcf = dsmark_put, | |
480 | .dump = dsmark_dump_class, | |
481 | }; | |
482 | ||
20fea08b | 483 | static struct Qdisc_ops dsmark_qdisc_ops __read_mostly = { |
1da177e4 LT |
484 | .next = NULL, |
485 | .cl_ops = &dsmark_class_ops, | |
486 | .id = "dsmark", | |
487 | .priv_size = sizeof(struct dsmark_qdisc_data), | |
488 | .enqueue = dsmark_enqueue, | |
489 | .dequeue = dsmark_dequeue, | |
8e3af978 | 490 | .peek = dsmark_peek, |
1da177e4 LT |
491 | .init = dsmark_init, |
492 | .reset = dsmark_reset, | |
493 | .destroy = dsmark_destroy, | |
494 | .change = NULL, | |
495 | .dump = dsmark_dump, | |
496 | .owner = THIS_MODULE, | |
497 | }; | |
498 | ||
499 | static int __init dsmark_module_init(void) | |
500 | { | |
501 | return register_qdisc(&dsmark_qdisc_ops); | |
502 | } | |
af0d1141 | 503 | |
10297b99 | 504 | static void __exit dsmark_module_exit(void) |
1da177e4 LT |
505 | { |
506 | unregister_qdisc(&dsmark_qdisc_ops); | |
507 | } | |
af0d1141 | 508 | |
1da177e4 LT |
509 | module_init(dsmark_module_init) |
510 | module_exit(dsmark_module_exit) | |
af0d1141 | 511 | |
1da177e4 | 512 | MODULE_LICENSE("GPL"); |