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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> | |
8 | #include <linux/types.h> | |
9 | #include <linux/string.h> | |
10 | #include <linux/errno.h> | |
11 | #include <linux/skbuff.h> | |
1da177e4 LT |
12 | #include <linux/rtnetlink.h> |
13 | #include <net/pkt_sched.h> | |
14 | #include <net/dsfield.h> | |
15 | #include <net/inet_ecn.h> | |
16 | #include <asm/byteorder.h> | |
17 | ||
18 | ||
08e9cd1f | 19 | #if 0 /* control */ |
1da177e4 LT |
20 | #define DPRINTK(format,args...) printk(KERN_DEBUG format,##args) |
21 | #else | |
22 | #define DPRINTK(format,args...) | |
23 | #endif | |
24 | ||
25 | #if 0 /* data */ | |
26 | #define D2PRINTK(format,args...) printk(KERN_DEBUG format,##args) | |
27 | #else | |
28 | #define D2PRINTK(format,args...) | |
29 | #endif | |
30 | ||
31 | ||
af0d1141 | 32 | #define PRIV(sch) ((struct dsmark_qdisc_data *) qdisc_priv(sch)) |
1da177e4 LT |
33 | |
34 | ||
35 | /* | |
36 | * classid class marking | |
37 | * ------- ----- ------- | |
38 | * n/a 0 n/a | |
39 | * x:0 1 use entry [0] | |
40 | * ... ... ... | |
41 | * x:y y>0 y+1 use entry [y] | |
42 | * ... ... ... | |
43 | * x:indices-1 indices use entry [indices-1] | |
44 | * ... ... ... | |
45 | * x:y y+1 use entry [y & (indices-1)] | |
46 | * ... ... ... | |
47 | * 0xffff 0x10000 use entry [indices-1] | |
48 | */ | |
49 | ||
50 | ||
51 | #define NO_DEFAULT_INDEX (1 << 16) | |
52 | ||
53 | struct dsmark_qdisc_data { | |
54 | struct Qdisc *q; | |
55 | struct tcf_proto *filter_list; | |
af0d1141 TG |
56 | u8 *mask; /* "owns" the array */ |
57 | u8 *value; | |
58 | u16 indices; | |
59 | u32 default_index; /* index range is 0...0xffff */ | |
1da177e4 LT |
60 | int set_tc_index; |
61 | }; | |
62 | ||
758cc43c TG |
63 | static inline int dsmark_valid_indices(u16 indices) |
64 | { | |
65 | while (indices != 1) { | |
66 | if (indices & 1) | |
67 | return 0; | |
68 | indices >>= 1; | |
69 | } | |
10297b99 | 70 | |
758cc43c TG |
71 | return 1; |
72 | } | |
73 | ||
74 | static inline int dsmark_valid_index(struct dsmark_qdisc_data *p, u16 index) | |
75 | { | |
76 | return (index <= p->indices && index > 0); | |
77 | } | |
1da177e4 LT |
78 | |
79 | /* ------------------------- Class/flow operations ------------------------- */ | |
80 | ||
af0d1141 TG |
81 | static int dsmark_graft(struct Qdisc *sch, unsigned long arg, |
82 | struct Qdisc *new, struct Qdisc **old) | |
1da177e4 LT |
83 | { |
84 | struct dsmark_qdisc_data *p = PRIV(sch); | |
85 | ||
af0d1141 TG |
86 | DPRINTK("dsmark_graft(sch %p,[qdisc %p],new %p,old %p)\n", |
87 | sch, p, new, old); | |
486b53e5 TG |
88 | |
89 | if (new == NULL) { | |
9f9afec4 PM |
90 | new = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, |
91 | sch->handle); | |
486b53e5 TG |
92 | if (new == NULL) |
93 | new = &noop_qdisc; | |
94 | } | |
95 | ||
1da177e4 | 96 | sch_tree_lock(sch); |
af0d1141 | 97 | *old = xchg(&p->q, new); |
5e50da01 | 98 | qdisc_tree_decrease_qlen(*old, (*old)->q.qlen); |
af0d1141 | 99 | qdisc_reset(*old); |
af0d1141 TG |
100 | sch_tree_unlock(sch); |
101 | ||
10297b99 | 102 | return 0; |
1da177e4 LT |
103 | } |
104 | ||
1da177e4 LT |
105 | static struct Qdisc *dsmark_leaf(struct Qdisc *sch, unsigned long arg) |
106 | { | |
af0d1141 | 107 | return PRIV(sch)->q; |
1da177e4 LT |
108 | } |
109 | ||
af0d1141 | 110 | static unsigned long dsmark_get(struct Qdisc *sch, u32 classid) |
1da177e4 | 111 | { |
af0d1141 TG |
112 | DPRINTK("dsmark_get(sch %p,[qdisc %p],classid %x)\n", |
113 | sch, PRIV(sch), classid); | |
1da177e4 | 114 | |
af0d1141 | 115 | return TC_H_MIN(classid) + 1; |
1da177e4 LT |
116 | } |
117 | ||
1da177e4 | 118 | static unsigned long dsmark_bind_filter(struct Qdisc *sch, |
af0d1141 | 119 | unsigned long parent, u32 classid) |
1da177e4 | 120 | { |
af0d1141 | 121 | return dsmark_get(sch, classid); |
1da177e4 LT |
122 | } |
123 | ||
1da177e4 LT |
124 | static void dsmark_put(struct Qdisc *sch, unsigned long cl) |
125 | { | |
126 | } | |
127 | ||
1da177e4 | 128 | static int dsmark_change(struct Qdisc *sch, u32 classid, u32 parent, |
758cc43c | 129 | struct rtattr **tca, unsigned long *arg) |
1da177e4 LT |
130 | { |
131 | struct dsmark_qdisc_data *p = PRIV(sch); | |
132 | struct rtattr *opt = tca[TCA_OPTIONS-1]; | |
133 | struct rtattr *tb[TCA_DSMARK_MAX]; | |
758cc43c TG |
134 | int err = -EINVAL; |
135 | u8 mask = 0; | |
1da177e4 LT |
136 | |
137 | DPRINTK("dsmark_change(sch %p,[qdisc %p],classid %x,parent %x)," | |
758cc43c TG |
138 | "arg 0x%lx\n", sch, p, classid, parent, *arg); |
139 | ||
140 | if (!dsmark_valid_index(p, *arg)) { | |
141 | err = -ENOENT; | |
142 | goto rtattr_failure; | |
1da177e4 | 143 | } |
1da177e4 | 144 | |
758cc43c TG |
145 | if (!opt || rtattr_parse_nested(tb, TCA_DSMARK_MAX, opt)) |
146 | goto rtattr_failure; | |
147 | ||
148 | if (tb[TCA_DSMARK_MASK-1]) | |
149 | mask = RTA_GET_U8(tb[TCA_DSMARK_MASK-1]); | |
150 | ||
151 | if (tb[TCA_DSMARK_VALUE-1]) | |
152 | p->value[*arg-1] = RTA_GET_U8(tb[TCA_DSMARK_VALUE-1]); | |
10297b99 | 153 | |
758cc43c TG |
154 | if (tb[TCA_DSMARK_MASK-1]) |
155 | p->mask[*arg-1] = mask; | |
156 | ||
157 | err = 0; | |
158 | ||
159 | rtattr_failure: | |
160 | return err; | |
161 | } | |
1da177e4 | 162 | |
af0d1141 | 163 | static int dsmark_delete(struct Qdisc *sch, unsigned long arg) |
1da177e4 LT |
164 | { |
165 | struct dsmark_qdisc_data *p = PRIV(sch); | |
166 | ||
af0d1141 | 167 | if (!dsmark_valid_index(p, arg)) |
1da177e4 | 168 | return -EINVAL; |
10297b99 | 169 | |
1da177e4 LT |
170 | p->mask[arg-1] = 0xff; |
171 | p->value[arg-1] = 0; | |
af0d1141 | 172 | |
1da177e4 LT |
173 | return 0; |
174 | } | |
175 | ||
1da177e4 LT |
176 | static void dsmark_walk(struct Qdisc *sch,struct qdisc_walker *walker) |
177 | { | |
178 | struct dsmark_qdisc_data *p = PRIV(sch); | |
179 | int i; | |
180 | ||
af0d1141 TG |
181 | DPRINTK("dsmark_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker); |
182 | ||
1da177e4 LT |
183 | if (walker->stop) |
184 | return; | |
af0d1141 | 185 | |
1da177e4 LT |
186 | for (i = 0; i < p->indices; i++) { |
187 | if (p->mask[i] == 0xff && !p->value[i]) | |
0451eb07 | 188 | goto ignore; |
1da177e4 LT |
189 | if (walker->count >= walker->skip) { |
190 | if (walker->fn(sch, i+1, walker) < 0) { | |
191 | walker->stop = 1; | |
192 | break; | |
193 | } | |
194 | } | |
10297b99 | 195 | ignore: |
0451eb07 | 196 | walker->count++; |
10297b99 | 197 | } |
1da177e4 LT |
198 | } |
199 | ||
1da177e4 LT |
200 | static struct tcf_proto **dsmark_find_tcf(struct Qdisc *sch,unsigned long cl) |
201 | { | |
af0d1141 | 202 | return &PRIV(sch)->filter_list; |
1da177e4 LT |
203 | } |
204 | ||
1da177e4 LT |
205 | /* --------------------------- Qdisc operations ---------------------------- */ |
206 | ||
1da177e4 LT |
207 | static int dsmark_enqueue(struct sk_buff *skb,struct Qdisc *sch) |
208 | { | |
209 | struct dsmark_qdisc_data *p = PRIV(sch); | |
af0d1141 TG |
210 | int err; |
211 | ||
212 | D2PRINTK("dsmark_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p); | |
1da177e4 | 213 | |
1da177e4 LT |
214 | if (p->set_tc_index) { |
215 | /* FIXME: Safe with non-linear skbs? --RR */ | |
216 | switch (skb->protocol) { | |
217 | case __constant_htons(ETH_P_IP): | |
eddc9ec5 | 218 | skb->tc_index = ipv4_get_dsfield(ip_hdr(skb)) |
1da177e4 LT |
219 | & ~INET_ECN_MASK; |
220 | break; | |
221 | case __constant_htons(ETH_P_IPV6): | |
0660e03f | 222 | skb->tc_index = ipv6_get_dsfield(ipv6_hdr(skb)) |
1da177e4 LT |
223 | & ~INET_ECN_MASK; |
224 | break; | |
225 | default: | |
226 | skb->tc_index = 0; | |
227 | break; | |
3ff50b79 | 228 | } |
1da177e4 | 229 | } |
af0d1141 TG |
230 | |
231 | if (TC_H_MAJ(skb->priority) == sch->handle) | |
1da177e4 | 232 | skb->tc_index = TC_H_MIN(skb->priority); |
af0d1141 TG |
233 | else { |
234 | struct tcf_result res; | |
235 | int result = tc_classify(skb, p->filter_list, &res); | |
236 | ||
237 | D2PRINTK("result %d class 0x%04x\n", result, res.classid); | |
238 | ||
1da177e4 LT |
239 | switch (result) { |
240 | #ifdef CONFIG_NET_CLS_POLICE | |
241 | case TC_POLICE_SHOT: | |
242 | kfree_skb(skb); | |
af0d1141 TG |
243 | sch->qstats.drops++; |
244 | return NET_XMIT_POLICED; | |
1da177e4 LT |
245 | #if 0 |
246 | case TC_POLICE_RECLASSIFY: | |
247 | /* FIXME: what to do here ??? */ | |
248 | #endif | |
249 | #endif | |
250 | case TC_POLICE_OK: | |
251 | skb->tc_index = TC_H_MIN(res.classid); | |
252 | break; | |
253 | case TC_POLICE_UNSPEC: | |
254 | /* fall through */ | |
255 | default: | |
256 | if (p->default_index != NO_DEFAULT_INDEX) | |
257 | skb->tc_index = p->default_index; | |
258 | break; | |
3ff50b79 | 259 | } |
1da177e4 | 260 | } |
1da177e4 | 261 | |
af0d1141 TG |
262 | err = p->q->enqueue(skb,p->q); |
263 | if (err != NET_XMIT_SUCCESS) { | |
1da177e4 | 264 | sch->qstats.drops++; |
af0d1141 | 265 | return err; |
1da177e4 | 266 | } |
af0d1141 | 267 | |
1da177e4 LT |
268 | sch->bstats.bytes += skb->len; |
269 | sch->bstats.packets++; | |
270 | sch->q.qlen++; | |
1da177e4 | 271 | |
af0d1141 TG |
272 | return NET_XMIT_SUCCESS; |
273 | } | |
1da177e4 LT |
274 | |
275 | static struct sk_buff *dsmark_dequeue(struct Qdisc *sch) | |
276 | { | |
277 | struct dsmark_qdisc_data *p = PRIV(sch); | |
278 | struct sk_buff *skb; | |
af0d1141 TG |
279 | u32 index; |
280 | ||
281 | D2PRINTK("dsmark_dequeue(sch %p,[qdisc %p])\n", sch, p); | |
1da177e4 | 282 | |
1da177e4 | 283 | skb = p->q->ops->dequeue(p->q); |
af0d1141 | 284 | if (skb == NULL) |
1da177e4 | 285 | return NULL; |
af0d1141 | 286 | |
1da177e4 | 287 | sch->q.qlen--; |
af0d1141 TG |
288 | |
289 | index = skb->tc_index & (p->indices - 1); | |
290 | D2PRINTK("index %d->%d\n", skb->tc_index, index); | |
291 | ||
1da177e4 LT |
292 | switch (skb->protocol) { |
293 | case __constant_htons(ETH_P_IP): | |
eddc9ec5 | 294 | ipv4_change_dsfield(ip_hdr(skb), p->mask[index], |
af0d1141 | 295 | p->value[index]); |
1da177e4 LT |
296 | break; |
297 | case __constant_htons(ETH_P_IPV6): | |
0660e03f | 298 | ipv6_change_dsfield(ipv6_hdr(skb), p->mask[index], |
af0d1141 | 299 | p->value[index]); |
1da177e4 LT |
300 | break; |
301 | default: | |
302 | /* | |
303 | * Only complain if a change was actually attempted. | |
304 | * This way, we can send non-IP traffic through dsmark | |
305 | * and don't need yet another qdisc as a bypass. | |
306 | */ | |
307 | if (p->mask[index] != 0xff || p->value[index]) | |
308 | printk(KERN_WARNING "dsmark_dequeue: " | |
309 | "unsupported protocol %d\n", | |
66c6f529 | 310 | ntohs(skb->protocol)); |
1da177e4 | 311 | break; |
3ff50b79 | 312 | } |
af0d1141 | 313 | |
1da177e4 LT |
314 | return skb; |
315 | } | |
316 | ||
1da177e4 LT |
317 | static int dsmark_requeue(struct sk_buff *skb,struct Qdisc *sch) |
318 | { | |
1da177e4 | 319 | struct dsmark_qdisc_data *p = PRIV(sch); |
af0d1141 | 320 | int err; |
1da177e4 | 321 | |
af0d1141 TG |
322 | D2PRINTK("dsmark_requeue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p); |
323 | ||
324 | err = p->q->ops->requeue(skb, p->q); | |
325 | if (err != NET_XMIT_SUCCESS) { | |
326 | sch->qstats.drops++; | |
327 | return err; | |
1da177e4 | 328 | } |
1da177e4 | 329 | |
af0d1141 TG |
330 | sch->q.qlen++; |
331 | sch->qstats.requeues++; | |
332 | ||
333 | return NET_XMIT_SUCCESS; | |
334 | } | |
1da177e4 LT |
335 | |
336 | static unsigned int dsmark_drop(struct Qdisc *sch) | |
337 | { | |
338 | struct dsmark_qdisc_data *p = PRIV(sch); | |
339 | unsigned int len; | |
10297b99 | 340 | |
af0d1141 TG |
341 | DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n", sch, p); |
342 | ||
343 | if (p->q->ops->drop == NULL) | |
1da177e4 | 344 | return 0; |
af0d1141 TG |
345 | |
346 | len = p->q->ops->drop(p->q); | |
347 | if (len) | |
348 | sch->q.qlen--; | |
349 | ||
1da177e4 LT |
350 | return len; |
351 | } | |
352 | ||
758cc43c | 353 | static int dsmark_init(struct Qdisc *sch, struct rtattr *opt) |
1da177e4 LT |
354 | { |
355 | struct dsmark_qdisc_data *p = PRIV(sch); | |
356 | struct rtattr *tb[TCA_DSMARK_MAX]; | |
758cc43c TG |
357 | int err = -EINVAL; |
358 | u32 default_index = NO_DEFAULT_INDEX; | |
359 | u16 indices; | |
360 | u8 *mask; | |
361 | ||
362 | DPRINTK("dsmark_init(sch %p,[qdisc %p],opt %p)\n", sch, p, opt); | |
363 | ||
364 | if (!opt || rtattr_parse_nested(tb, TCA_DSMARK_MAX, opt) < 0) | |
365 | goto errout; | |
366 | ||
367 | indices = RTA_GET_U16(tb[TCA_DSMARK_INDICES-1]); | |
368 | if (!indices || !dsmark_valid_indices(indices)) | |
369 | goto errout; | |
370 | ||
371 | if (tb[TCA_DSMARK_DEFAULT_INDEX-1]) | |
372 | default_index = RTA_GET_U16(tb[TCA_DSMARK_DEFAULT_INDEX-1]); | |
373 | ||
374 | mask = kmalloc(indices * 2, GFP_KERNEL); | |
375 | if (mask == NULL) { | |
376 | err = -ENOMEM; | |
377 | goto errout; | |
1da177e4 | 378 | } |
758cc43c TG |
379 | |
380 | p->mask = mask; | |
381 | memset(p->mask, 0xff, indices); | |
382 | ||
383 | p->value = p->mask + indices; | |
384 | memset(p->value, 0, indices); | |
385 | ||
386 | p->indices = indices; | |
387 | p->default_index = default_index; | |
388 | p->set_tc_index = RTA_GET_FLAG(tb[TCA_DSMARK_SET_TC_INDEX-1]); | |
389 | ||
9f9afec4 | 390 | p->q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, sch->handle); |
758cc43c | 391 | if (p->q == NULL) |
1da177e4 | 392 | p->q = &noop_qdisc; |
758cc43c TG |
393 | |
394 | DPRINTK("dsmark_init: qdisc %p\n", p->q); | |
395 | ||
396 | err = 0; | |
397 | errout: | |
398 | rtattr_failure: | |
399 | return err; | |
1da177e4 LT |
400 | } |
401 | ||
1da177e4 LT |
402 | static void dsmark_reset(struct Qdisc *sch) |
403 | { | |
404 | struct dsmark_qdisc_data *p = PRIV(sch); | |
405 | ||
af0d1141 | 406 | DPRINTK("dsmark_reset(sch %p,[qdisc %p])\n", sch, p); |
1da177e4 LT |
407 | qdisc_reset(p->q); |
408 | sch->q.qlen = 0; | |
409 | } | |
410 | ||
1da177e4 LT |
411 | static void dsmark_destroy(struct Qdisc *sch) |
412 | { | |
413 | struct dsmark_qdisc_data *p = PRIV(sch); | |
1da177e4 | 414 | |
af0d1141 TG |
415 | DPRINTK("dsmark_destroy(sch %p,[qdisc %p])\n", sch, p); |
416 | ||
a48b5a61 | 417 | tcf_destroy_chain(p->filter_list); |
1da177e4 LT |
418 | qdisc_destroy(p->q); |
419 | kfree(p->mask); | |
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 LT |
424 | { |
425 | struct dsmark_qdisc_data *p = PRIV(sch); | |
02f23f09 | 426 | struct rtattr *opts = NULL; |
1da177e4 | 427 | |
02f23f09 TG |
428 | DPRINTK("dsmark_dump_class(sch %p,[qdisc %p],class %ld\n", sch, p, cl); |
429 | ||
430 | if (!dsmark_valid_index(p, cl)) | |
1da177e4 | 431 | return -EINVAL; |
02f23f09 TG |
432 | |
433 | tcm->tcm_handle = TC_H_MAKE(TC_H_MAJ(sch->handle), cl-1); | |
cdc7f8e3 | 434 | tcm->tcm_info = p->q->handle; |
02f23f09 TG |
435 | |
436 | opts = RTA_NEST(skb, TCA_OPTIONS); | |
437 | RTA_PUT_U8(skb,TCA_DSMARK_MASK, p->mask[cl-1]); | |
438 | RTA_PUT_U8(skb,TCA_DSMARK_VALUE, p->value[cl-1]); | |
439 | ||
440 | return RTA_NEST_END(skb, opts); | |
1da177e4 LT |
441 | |
442 | rtattr_failure: | |
02f23f09 | 443 | return RTA_NEST_CANCEL(skb, opts); |
1da177e4 LT |
444 | } |
445 | ||
446 | static int dsmark_dump(struct Qdisc *sch, struct sk_buff *skb) | |
447 | { | |
448 | struct dsmark_qdisc_data *p = PRIV(sch); | |
02f23f09 | 449 | struct rtattr *opts = NULL; |
1da177e4 | 450 | |
02f23f09 TG |
451 | opts = RTA_NEST(skb, TCA_OPTIONS); |
452 | RTA_PUT_U16(skb, TCA_DSMARK_INDICES, p->indices); | |
453 | ||
454 | if (p->default_index != NO_DEFAULT_INDEX) | |
455 | RTA_PUT_U16(skb, TCA_DSMARK_DEFAULT_INDEX, p->default_index); | |
1da177e4 | 456 | |
1da177e4 | 457 | if (p->set_tc_index) |
02f23f09 TG |
458 | RTA_PUT_FLAG(skb, TCA_DSMARK_SET_TC_INDEX); |
459 | ||
460 | return RTA_NEST_END(skb, opts); | |
1da177e4 LT |
461 | |
462 | rtattr_failure: | |
02f23f09 | 463 | return RTA_NEST_CANCEL(skb, opts); |
1da177e4 LT |
464 | } |
465 | ||
466 | static struct Qdisc_class_ops dsmark_class_ops = { | |
467 | .graft = dsmark_graft, | |
468 | .leaf = dsmark_leaf, | |
469 | .get = dsmark_get, | |
470 | .put = dsmark_put, | |
471 | .change = dsmark_change, | |
472 | .delete = dsmark_delete, | |
473 | .walk = dsmark_walk, | |
474 | .tcf_chain = dsmark_find_tcf, | |
475 | .bind_tcf = dsmark_bind_filter, | |
476 | .unbind_tcf = dsmark_put, | |
477 | .dump = dsmark_dump_class, | |
478 | }; | |
479 | ||
480 | static struct Qdisc_ops dsmark_qdisc_ops = { | |
481 | .next = NULL, | |
482 | .cl_ops = &dsmark_class_ops, | |
483 | .id = "dsmark", | |
484 | .priv_size = sizeof(struct dsmark_qdisc_data), | |
485 | .enqueue = dsmark_enqueue, | |
486 | .dequeue = dsmark_dequeue, | |
487 | .requeue = dsmark_requeue, | |
488 | .drop = dsmark_drop, | |
489 | .init = dsmark_init, | |
490 | .reset = dsmark_reset, | |
491 | .destroy = dsmark_destroy, | |
492 | .change = NULL, | |
493 | .dump = dsmark_dump, | |
494 | .owner = THIS_MODULE, | |
495 | }; | |
496 | ||
497 | static int __init dsmark_module_init(void) | |
498 | { | |
499 | return register_qdisc(&dsmark_qdisc_ops); | |
500 | } | |
af0d1141 | 501 | |
10297b99 | 502 | static void __exit dsmark_module_exit(void) |
1da177e4 LT |
503 | { |
504 | unregister_qdisc(&dsmark_qdisc_ops); | |
505 | } | |
af0d1141 | 506 | |
1da177e4 LT |
507 | module_init(dsmark_module_init) |
508 | module_exit(dsmark_module_exit) | |
af0d1141 | 509 | |
1da177e4 | 510 | MODULE_LICENSE("GPL"); |