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 LT |
15 | #include <net/pkt_sched.h> |
16 | #include <net/dsfield.h> | |
17 | #include <net/inet_ecn.h> | |
18 | #include <asm/byteorder.h> | |
19 | ||
1da177e4 LT |
20 | /* |
21 | * classid class marking | |
22 | * ------- ----- ------- | |
23 | * n/a 0 n/a | |
24 | * x:0 1 use entry [0] | |
25 | * ... ... ... | |
26 | * x:y y>0 y+1 use entry [y] | |
27 | * ... ... ... | |
28 | * x:indices-1 indices use entry [indices-1] | |
29 | * ... ... ... | |
30 | * x:y y+1 use entry [y & (indices-1)] | |
31 | * ... ... ... | |
32 | * 0xffff 0x10000 use entry [indices-1] | |
33 | */ | |
34 | ||
35 | ||
36 | #define NO_DEFAULT_INDEX (1 << 16) | |
37 | ||
47bbbb30 ED |
38 | struct mask_value { |
39 | u8 mask; | |
40 | u8 value; | |
41 | }; | |
42 | ||
1da177e4 LT |
43 | struct dsmark_qdisc_data { |
44 | struct Qdisc *q; | |
25d8c0d5 | 45 | struct tcf_proto __rcu *filter_list; |
47bbbb30 | 46 | struct mask_value *mv; |
af0d1141 | 47 | u16 indices; |
47bbbb30 | 48 | u8 set_tc_index; |
af0d1141 | 49 | u32 default_index; /* index range is 0...0xffff */ |
47bbbb30 ED |
50 | #define DSMARK_EMBEDDED_SZ 16 |
51 | struct mask_value embedded[DSMARK_EMBEDDED_SZ]; | |
1da177e4 LT |
52 | }; |
53 | ||
758cc43c TG |
54 | static inline int dsmark_valid_index(struct dsmark_qdisc_data *p, u16 index) |
55 | { | |
17569fae | 56 | return index <= p->indices && index > 0; |
758cc43c | 57 | } |
1da177e4 LT |
58 | |
59 | /* ------------------------- Class/flow operations ------------------------- */ | |
60 | ||
af0d1141 TG |
61 | static int dsmark_graft(struct Qdisc *sch, unsigned long arg, |
62 | struct Qdisc *new, struct Qdisc **old) | |
1da177e4 | 63 | { |
81da99ed | 64 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 65 | |
c76f2a2c YY |
66 | pr_debug("%s(sch %p,[qdisc %p],new %p,old %p)\n", |
67 | __func__, sch, p, new, old); | |
486b53e5 TG |
68 | |
69 | if (new == NULL) { | |
3511c913 | 70 | new = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, |
9f9afec4 | 71 | sch->handle); |
486b53e5 TG |
72 | if (new == NULL) |
73 | new = &noop_qdisc; | |
74 | } | |
75 | ||
1188e140 | 76 | *old = qdisc_replace(sch, new, &p->q); |
10297b99 | 77 | return 0; |
1da177e4 LT |
78 | } |
79 | ||
1da177e4 LT |
80 | static struct Qdisc *dsmark_leaf(struct Qdisc *sch, unsigned long arg) |
81 | { | |
81da99ed SH |
82 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
83 | return p->q; | |
1da177e4 LT |
84 | } |
85 | ||
af0d1141 | 86 | static unsigned long dsmark_get(struct Qdisc *sch, u32 classid) |
1da177e4 | 87 | { |
c76f2a2c YY |
88 | pr_debug("%s(sch %p,[qdisc %p],classid %x)\n", |
89 | __func__, sch, qdisc_priv(sch), classid); | |
1da177e4 | 90 | |
af0d1141 | 91 | return TC_H_MIN(classid) + 1; |
1da177e4 LT |
92 | } |
93 | ||
1da177e4 | 94 | static unsigned long dsmark_bind_filter(struct Qdisc *sch, |
af0d1141 | 95 | unsigned long parent, u32 classid) |
1da177e4 | 96 | { |
af0d1141 | 97 | return dsmark_get(sch, classid); |
1da177e4 LT |
98 | } |
99 | ||
1da177e4 LT |
100 | static void dsmark_put(struct Qdisc *sch, unsigned long cl) |
101 | { | |
102 | } | |
103 | ||
27a3421e PM |
104 | static const struct nla_policy dsmark_policy[TCA_DSMARK_MAX + 1] = { |
105 | [TCA_DSMARK_INDICES] = { .type = NLA_U16 }, | |
106 | [TCA_DSMARK_DEFAULT_INDEX] = { .type = NLA_U16 }, | |
107 | [TCA_DSMARK_SET_TC_INDEX] = { .type = NLA_FLAG }, | |
108 | [TCA_DSMARK_MASK] = { .type = NLA_U8 }, | |
109 | [TCA_DSMARK_VALUE] = { .type = NLA_U8 }, | |
110 | }; | |
111 | ||
1da177e4 | 112 | static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent, |
1e90474c | 113 | struct nlattr **tca, unsigned long *arg) |
1da177e4 | 114 | { |
81da99ed | 115 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c PM |
116 | struct nlattr *opt = tca[TCA_OPTIONS]; |
117 | struct nlattr *tb[TCA_DSMARK_MAX + 1]; | |
758cc43c | 118 | int err = -EINVAL; |
1da177e4 | 119 | |
c76f2a2c YY |
120 | pr_debug("%s(sch %p,[qdisc %p],classid %x,parent %x), arg 0x%lx\n", |
121 | __func__, sch, p, classid, parent, *arg); | |
758cc43c TG |
122 | |
123 | if (!dsmark_valid_index(p, *arg)) { | |
124 | err = -ENOENT; | |
1e90474c | 125 | goto errout; |
1da177e4 | 126 | } |
1da177e4 | 127 | |
cee63723 | 128 | if (!opt) |
1e90474c | 129 | goto errout; |
758cc43c | 130 | |
27a3421e | 131 | err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, dsmark_policy); |
cee63723 | 132 | if (err < 0) |
27a3421e | 133 | goto errout; |
cee63723 | 134 | |
27a3421e | 135 | if (tb[TCA_DSMARK_VALUE]) |
47bbbb30 | 136 | p->mv[*arg - 1].value = nla_get_u8(tb[TCA_DSMARK_VALUE]); |
10297b99 | 137 | |
1e90474c | 138 | if (tb[TCA_DSMARK_MASK]) |
47bbbb30 | 139 | p->mv[*arg - 1].mask = nla_get_u8(tb[TCA_DSMARK_MASK]); |
758cc43c TG |
140 | |
141 | err = 0; | |
142 | ||
1e90474c | 143 | errout: |
758cc43c TG |
144 | return err; |
145 | } | |
1da177e4 | 146 | |
af0d1141 | 147 | static int dsmark_delete(struct Qdisc *sch, unsigned long arg) |
1da177e4 | 148 | { |
81da99ed | 149 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 150 | |
af0d1141 | 151 | if (!dsmark_valid_index(p, arg)) |
1da177e4 | 152 | return -EINVAL; |
10297b99 | 153 | |
47bbbb30 ED |
154 | p->mv[arg - 1].mask = 0xff; |
155 | p->mv[arg - 1].value = 0; | |
af0d1141 | 156 | |
1da177e4 LT |
157 | return 0; |
158 | } | |
159 | ||
9d127fbd | 160 | static void dsmark_walk(struct Qdisc *sch, struct qdisc_walker *walker) |
1da177e4 | 161 | { |
81da99ed | 162 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 LT |
163 | int i; |
164 | ||
c76f2a2c YY |
165 | pr_debug("%s(sch %p,[qdisc %p],walker %p)\n", |
166 | __func__, sch, p, walker); | |
af0d1141 | 167 | |
1da177e4 LT |
168 | if (walker->stop) |
169 | return; | |
af0d1141 | 170 | |
1da177e4 | 171 | for (i = 0; i < p->indices; i++) { |
47bbbb30 | 172 | if (p->mv[i].mask == 0xff && !p->mv[i].value) |
0451eb07 | 173 | goto ignore; |
1da177e4 | 174 | if (walker->count >= walker->skip) { |
cc7ec456 | 175 | if (walker->fn(sch, i + 1, walker) < 0) { |
1da177e4 LT |
176 | walker->stop = 1; |
177 | break; | |
178 | } | |
179 | } | |
10297b99 | 180 | ignore: |
0451eb07 | 181 | walker->count++; |
10297b99 | 182 | } |
1da177e4 LT |
183 | } |
184 | ||
25d8c0d5 JF |
185 | static inline struct tcf_proto __rcu **dsmark_find_tcf(struct Qdisc *sch, |
186 | unsigned long cl) | |
1da177e4 | 187 | { |
81da99ed SH |
188 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
189 | return &p->filter_list; | |
1da177e4 LT |
190 | } |
191 | ||
1da177e4 LT |
192 | /* --------------------------- Qdisc operations ---------------------------- */ |
193 | ||
9d127fbd | 194 | static int dsmark_enqueue(struct sk_buff *skb, struct Qdisc *sch) |
1da177e4 | 195 | { |
81da99ed | 196 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
af0d1141 TG |
197 | int err; |
198 | ||
c76f2a2c | 199 | pr_debug("%s(skb %p,sch %p,[qdisc %p])\n", __func__, skb, sch, p); |
1da177e4 | 200 | |
1da177e4 | 201 | if (p->set_tc_index) { |
ffde339b ED |
202 | int wlen = skb_network_offset(skb); |
203 | ||
d8b9605d | 204 | switch (tc_skb_protocol(skb)) { |
60678040 | 205 | case htons(ETH_P_IP): |
ffde339b ED |
206 | wlen += sizeof(struct iphdr); |
207 | if (!pskb_may_pull(skb, wlen) || | |
208 | skb_try_make_writable(skb, wlen)) | |
9d127fbd | 209 | goto drop; |
4c30719f | 210 | |
9d127fbd SH |
211 | skb->tc_index = ipv4_get_dsfield(ip_hdr(skb)) |
212 | & ~INET_ECN_MASK; | |
213 | break; | |
4c30719f | 214 | |
60678040 | 215 | case htons(ETH_P_IPV6): |
ffde339b ED |
216 | wlen += sizeof(struct ipv6hdr); |
217 | if (!pskb_may_pull(skb, wlen) || | |
218 | skb_try_make_writable(skb, wlen)) | |
9d127fbd | 219 | goto drop; |
4c30719f | 220 | |
9d127fbd SH |
221 | skb->tc_index = ipv6_get_dsfield(ipv6_hdr(skb)) |
222 | & ~INET_ECN_MASK; | |
223 | break; | |
224 | default: | |
225 | skb->tc_index = 0; | |
226 | break; | |
3ff50b79 | 227 | } |
1da177e4 | 228 | } |
af0d1141 TG |
229 | |
230 | if (TC_H_MAJ(skb->priority) == sch->handle) | |
1da177e4 | 231 | skb->tc_index = TC_H_MIN(skb->priority); |
af0d1141 TG |
232 | else { |
233 | struct tcf_result res; | |
25d8c0d5 | 234 | struct tcf_proto *fl = rcu_dereference_bh(p->filter_list); |
3b3ae880 | 235 | int result = tc_classify(skb, fl, &res, false); |
af0d1141 | 236 | |
81da99ed | 237 | pr_debug("result %d class 0x%04x\n", result, res.classid); |
af0d1141 | 238 | |
1da177e4 | 239 | switch (result) { |
f6853e2d PM |
240 | #ifdef CONFIG_NET_CLS_ACT |
241 | case TC_ACT_QUEUED: | |
242 | case TC_ACT_STOLEN: | |
243 | kfree_skb(skb); | |
378a2f09 | 244 | return NET_XMIT_SUCCESS | __NET_XMIT_STOLEN; |
4c30719f | 245 | |
f6853e2d | 246 | case TC_ACT_SHOT: |
4c30719f | 247 | goto drop; |
1da177e4 | 248 | #endif |
c3bc7cff | 249 | case TC_ACT_OK: |
f6853e2d PM |
250 | skb->tc_index = TC_H_MIN(res.classid); |
251 | break; | |
4c30719f | 252 | |
f6853e2d PM |
253 | default: |
254 | if (p->default_index != NO_DEFAULT_INDEX) | |
255 | skb->tc_index = p->default_index; | |
256 | break; | |
3ff50b79 | 257 | } |
1da177e4 | 258 | } |
1da177e4 | 259 | |
5f86173b | 260 | err = qdisc_enqueue(skb, p->q); |
af0d1141 | 261 | if (err != NET_XMIT_SUCCESS) { |
378a2f09 | 262 | if (net_xmit_drop_count(err)) |
25331d6c | 263 | qdisc_qstats_drop(sch); |
af0d1141 | 264 | return err; |
1da177e4 | 265 | } |
af0d1141 | 266 | |
5ecc98e1 | 267 | qdisc_qstats_backlog_inc(sch, skb); |
1da177e4 | 268 | sch->q.qlen++; |
1da177e4 | 269 | |
af0d1141 | 270 | return NET_XMIT_SUCCESS; |
4c30719f SH |
271 | |
272 | drop: | |
17045755 | 273 | qdisc_drop(skb, sch); |
c27f339a | 274 | return NET_XMIT_SUCCESS | __NET_XMIT_BYPASS; |
af0d1141 | 275 | } |
1da177e4 LT |
276 | |
277 | static struct sk_buff *dsmark_dequeue(struct Qdisc *sch) | |
278 | { | |
81da99ed | 279 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 280 | struct sk_buff *skb; |
af0d1141 TG |
281 | u32 index; |
282 | ||
c76f2a2c | 283 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
1da177e4 | 284 | |
1da177e4 | 285 | skb = p->q->ops->dequeue(p->q); |
af0d1141 | 286 | if (skb == NULL) |
1da177e4 | 287 | return NULL; |
af0d1141 | 288 | |
9190b3b3 | 289 | qdisc_bstats_update(sch, skb); |
5ecc98e1 | 290 | qdisc_qstats_backlog_dec(sch, skb); |
1da177e4 | 291 | sch->q.qlen--; |
af0d1141 TG |
292 | |
293 | index = skb->tc_index & (p->indices - 1); | |
81da99ed | 294 | pr_debug("index %d->%d\n", skb->tc_index, index); |
af0d1141 | 295 | |
d8b9605d | 296 | switch (tc_skb_protocol(skb)) { |
60678040 | 297 | case htons(ETH_P_IP): |
47bbbb30 ED |
298 | ipv4_change_dsfield(ip_hdr(skb), p->mv[index].mask, |
299 | p->mv[index].value); | |
1da177e4 | 300 | break; |
60678040 | 301 | case htons(ETH_P_IPV6): |
47bbbb30 ED |
302 | ipv6_change_dsfield(ipv6_hdr(skb), p->mv[index].mask, |
303 | p->mv[index].value); | |
1da177e4 | 304 | break; |
9d127fbd SH |
305 | default: |
306 | /* | |
307 | * Only complain if a change was actually attempted. | |
308 | * This way, we can send non-IP traffic through dsmark | |
309 | * and don't need yet another qdisc as a bypass. | |
310 | */ | |
47bbbb30 | 311 | if (p->mv[index].mask != 0xff || p->mv[index].value) |
c76f2a2c | 312 | pr_warn("%s: unsupported protocol %d\n", |
d8b9605d | 313 | __func__, ntohs(tc_skb_protocol(skb))); |
9d127fbd | 314 | break; |
3ff50b79 | 315 | } |
af0d1141 | 316 | |
1da177e4 LT |
317 | return skb; |
318 | } | |
319 | ||
8e3af978 JP |
320 | static struct sk_buff *dsmark_peek(struct Qdisc *sch) |
321 | { | |
322 | struct dsmark_qdisc_data *p = qdisc_priv(sch); | |
323 | ||
c76f2a2c | 324 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
8e3af978 JP |
325 | |
326 | return p->q->ops->peek(p->q); | |
327 | } | |
328 | ||
1da177e4 LT |
329 | static unsigned int dsmark_drop(struct Qdisc *sch) |
330 | { | |
81da99ed | 331 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 332 | unsigned int len; |
10297b99 | 333 | |
c76f2a2c | 334 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
af0d1141 TG |
335 | |
336 | if (p->q->ops->drop == NULL) | |
1da177e4 | 337 | return 0; |
af0d1141 TG |
338 | |
339 | len = p->q->ops->drop(p->q); | |
340 | if (len) | |
341 | sch->q.qlen--; | |
342 | ||
1da177e4 LT |
343 | return len; |
344 | } | |
345 | ||
1e90474c | 346 | static int dsmark_init(struct Qdisc *sch, struct nlattr *opt) |
1da177e4 | 347 | { |
81da99ed | 348 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c | 349 | struct nlattr *tb[TCA_DSMARK_MAX + 1]; |
758cc43c TG |
350 | int err = -EINVAL; |
351 | u32 default_index = NO_DEFAULT_INDEX; | |
352 | u16 indices; | |
47bbbb30 | 353 | int i; |
758cc43c | 354 | |
c76f2a2c | 355 | pr_debug("%s(sch %p,[qdisc %p],opt %p)\n", __func__, sch, p, opt); |
758cc43c | 356 | |
cee63723 PM |
357 | if (!opt) |
358 | goto errout; | |
359 | ||
27a3421e | 360 | err = nla_parse_nested(tb, TCA_DSMARK_MAX, opt, dsmark_policy); |
cee63723 | 361 | if (err < 0) |
758cc43c TG |
362 | goto errout; |
363 | ||
cee63723 | 364 | err = -EINVAL; |
1e90474c | 365 | indices = nla_get_u16(tb[TCA_DSMARK_INDICES]); |
5b0ac72b DM |
366 | |
367 | if (hweight32(indices) != 1) | |
758cc43c TG |
368 | goto errout; |
369 | ||
27a3421e | 370 | if (tb[TCA_DSMARK_DEFAULT_INDEX]) |
1e90474c | 371 | default_index = nla_get_u16(tb[TCA_DSMARK_DEFAULT_INDEX]); |
758cc43c | 372 | |
47bbbb30 ED |
373 | if (indices <= DSMARK_EMBEDDED_SZ) |
374 | p->mv = p->embedded; | |
375 | else | |
376 | p->mv = kmalloc_array(indices, sizeof(*p->mv), GFP_KERNEL); | |
377 | if (!p->mv) { | |
758cc43c TG |
378 | err = -ENOMEM; |
379 | goto errout; | |
1da177e4 | 380 | } |
47bbbb30 ED |
381 | for (i = 0; i < indices; i++) { |
382 | p->mv[i].mask = 0xff; | |
383 | p->mv[i].value = 0; | |
384 | } | |
758cc43c TG |
385 | p->indices = indices; |
386 | p->default_index = default_index; | |
1e90474c | 387 | p->set_tc_index = nla_get_flag(tb[TCA_DSMARK_SET_TC_INDEX]); |
758cc43c | 388 | |
3511c913 | 389 | p->q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, sch->handle); |
758cc43c | 390 | if (p->q == NULL) |
1da177e4 | 391 | p->q = &noop_qdisc; |
758cc43c | 392 | |
c76f2a2c | 393 | pr_debug("%s: qdisc %p\n", __func__, p->q); |
758cc43c TG |
394 | |
395 | err = 0; | |
396 | errout: | |
758cc43c | 397 | return err; |
1da177e4 LT |
398 | } |
399 | ||
1da177e4 LT |
400 | static void dsmark_reset(struct Qdisc *sch) |
401 | { | |
81da99ed | 402 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 403 | |
c76f2a2c | 404 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
1da177e4 | 405 | qdisc_reset(p->q); |
5ecc98e1 | 406 | sch->qstats.backlog = 0; |
1da177e4 LT |
407 | sch->q.qlen = 0; |
408 | } | |
409 | ||
1da177e4 LT |
410 | static void dsmark_destroy(struct Qdisc *sch) |
411 | { | |
81da99ed | 412 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1da177e4 | 413 | |
c76f2a2c | 414 | pr_debug("%s(sch %p,[qdisc %p])\n", __func__, sch, p); |
af0d1141 | 415 | |
ff31ab56 | 416 | tcf_destroy_chain(&p->filter_list); |
1da177e4 | 417 | qdisc_destroy(p->q); |
47bbbb30 ED |
418 | if (p->mv != p->embedded) |
419 | kfree(p->mv); | |
1da177e4 LT |
420 | } |
421 | ||
1da177e4 | 422 | static int dsmark_dump_class(struct Qdisc *sch, unsigned long cl, |
02f23f09 | 423 | struct sk_buff *skb, struct tcmsg *tcm) |
1da177e4 | 424 | { |
81da99ed | 425 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c | 426 | struct nlattr *opts = NULL; |
1da177e4 | 427 | |
c76f2a2c | 428 | pr_debug("%s(sch %p,[qdisc %p],class %ld\n", __func__, sch, p, cl); |
02f23f09 TG |
429 | |
430 | if (!dsmark_valid_index(p, cl)) | |
1da177e4 | 431 | return -EINVAL; |
02f23f09 | 432 | |
cc7ec456 | 433 | tcm->tcm_handle = TC_H_MAKE(TC_H_MAJ(sch->handle), cl - 1); |
cdc7f8e3 | 434 | tcm->tcm_info = p->q->handle; |
02f23f09 | 435 | |
1e90474c PM |
436 | opts = nla_nest_start(skb, TCA_OPTIONS); |
437 | if (opts == NULL) | |
438 | goto nla_put_failure; | |
47bbbb30 ED |
439 | if (nla_put_u8(skb, TCA_DSMARK_MASK, p->mv[cl - 1].mask) || |
440 | nla_put_u8(skb, TCA_DSMARK_VALUE, p->mv[cl - 1].value)) | |
1b34ec43 | 441 | goto nla_put_failure; |
02f23f09 | 442 | |
1e90474c | 443 | return nla_nest_end(skb, opts); |
1da177e4 | 444 | |
1e90474c | 445 | nla_put_failure: |
bc3ed28c TG |
446 | nla_nest_cancel(skb, opts); |
447 | return -EMSGSIZE; | |
1da177e4 LT |
448 | } |
449 | ||
450 | static int dsmark_dump(struct Qdisc *sch, struct sk_buff *skb) | |
451 | { | |
81da99ed | 452 | struct dsmark_qdisc_data *p = qdisc_priv(sch); |
1e90474c | 453 | struct nlattr *opts = NULL; |
1da177e4 | 454 | |
1e90474c PM |
455 | opts = nla_nest_start(skb, TCA_OPTIONS); |
456 | if (opts == NULL) | |
457 | goto nla_put_failure; | |
1b34ec43 DM |
458 | if (nla_put_u16(skb, TCA_DSMARK_INDICES, p->indices)) |
459 | goto nla_put_failure; | |
02f23f09 | 460 | |
1b34ec43 DM |
461 | if (p->default_index != NO_DEFAULT_INDEX && |
462 | nla_put_u16(skb, TCA_DSMARK_DEFAULT_INDEX, p->default_index)) | |
463 | goto nla_put_failure; | |
1da177e4 | 464 | |
1b34ec43 DM |
465 | if (p->set_tc_index && |
466 | nla_put_flag(skb, TCA_DSMARK_SET_TC_INDEX)) | |
467 | goto nla_put_failure; | |
02f23f09 | 468 | |
1e90474c | 469 | return nla_nest_end(skb, opts); |
1da177e4 | 470 | |
1e90474c | 471 | nla_put_failure: |
bc3ed28c TG |
472 | nla_nest_cancel(skb, opts); |
473 | return -EMSGSIZE; | |
1da177e4 LT |
474 | } |
475 | ||
20fea08b | 476 | static const struct Qdisc_class_ops dsmark_class_ops = { |
1da177e4 LT |
477 | .graft = dsmark_graft, |
478 | .leaf = dsmark_leaf, | |
479 | .get = dsmark_get, | |
480 | .put = dsmark_put, | |
481 | .change = dsmark_change, | |
482 | .delete = dsmark_delete, | |
483 | .walk = dsmark_walk, | |
484 | .tcf_chain = dsmark_find_tcf, | |
485 | .bind_tcf = dsmark_bind_filter, | |
486 | .unbind_tcf = dsmark_put, | |
487 | .dump = dsmark_dump_class, | |
488 | }; | |
489 | ||
20fea08b | 490 | static struct Qdisc_ops dsmark_qdisc_ops __read_mostly = { |
1da177e4 LT |
491 | .next = NULL, |
492 | .cl_ops = &dsmark_class_ops, | |
493 | .id = "dsmark", | |
494 | .priv_size = sizeof(struct dsmark_qdisc_data), | |
495 | .enqueue = dsmark_enqueue, | |
496 | .dequeue = dsmark_dequeue, | |
8e3af978 | 497 | .peek = dsmark_peek, |
1da177e4 LT |
498 | .drop = dsmark_drop, |
499 | .init = dsmark_init, | |
500 | .reset = dsmark_reset, | |
501 | .destroy = dsmark_destroy, | |
502 | .change = NULL, | |
503 | .dump = dsmark_dump, | |
504 | .owner = THIS_MODULE, | |
505 | }; | |
506 | ||
507 | static int __init dsmark_module_init(void) | |
508 | { | |
509 | return register_qdisc(&dsmark_qdisc_ops); | |
510 | } | |
af0d1141 | 511 | |
10297b99 | 512 | static void __exit dsmark_module_exit(void) |
1da177e4 LT |
513 | { |
514 | unregister_qdisc(&dsmark_qdisc_ops); | |
515 | } | |
af0d1141 | 516 | |
1da177e4 LT |
517 | module_init(dsmark_module_init) |
518 | module_exit(dsmark_module_exit) | |
af0d1141 | 519 | |
1da177e4 | 520 | MODULE_LICENSE("GPL"); |