21 #include <netlink-private/netlink.h>
22 #include <netlink-private/tc.h>
23 #include <netlink/netlink.h>
24 #include <netlink/attr.h>
25 #include <netlink/utils.h>
26 #include <netlink-private/route/tc-api.h>
27 #include <netlink/route/classifier.h>
28 #include <netlink/route/cls/u32.h>
29 #include <netlink/route/action.h>
32 #define U32_ATTR_DIVISOR 0x001
33 #define U32_ATTR_HASH 0x002
34 #define U32_ATTR_CLASSID 0x004
35 #define U32_ATTR_LINK 0x008
36 #define U32_ATTR_PCNT 0x010
37 #define U32_ATTR_SELECTOR 0x020
38 #define U32_ATTR_ACTION 0x040
39 #define U32_ATTR_POLICE 0x080
40 #define U32_ATTR_INDEV 0x100
43 static inline struct tc_u32_sel *u32_selector(
struct rtnl_u32 *u)
45 return (
struct tc_u32_sel *) u->cu_selector->d_data;
48 static inline struct tc_u32_sel *u32_selector_alloc(
struct rtnl_u32 *u)
51 u->cu_selector =
nl_data_alloc(NULL,
sizeof(
struct tc_u32_sel));
53 return u32_selector(u);
56 static struct nla_policy u32_policy[TCA_U32_MAX+1] = {
58 [TCA_U32_HASH] = { .type =
NLA_U32 },
59 [TCA_U32_CLASSID] = { .type =
NLA_U32 },
60 [TCA_U32_LINK] = { .type =
NLA_U32 },
63 [TCA_U32_SEL] = { .minlen =
sizeof(
struct tc_u32_sel) },
64 [TCA_U32_PCNT] = { .minlen =
sizeof(
struct tc_u32_pcnt) },
67 static int u32_msg_parser(
struct rtnl_tc *tc,
void *data)
69 struct rtnl_u32 *u = data;
70 struct nlattr *tb[TCA_U32_MAX + 1];
73 err = tca_parse(tb, TCA_U32_MAX, tc, u32_policy);
77 if (tb[TCA_U32_DIVISOR]) {
79 u->cu_mask |= U32_ATTR_DIVISOR;
82 if (tb[TCA_U32_SEL]) {
86 u->cu_mask |= U32_ATTR_SELECTOR;
89 if (tb[TCA_U32_HASH]) {
91 u->cu_mask |= U32_ATTR_HASH;
94 if (tb[TCA_U32_CLASSID]) {
96 u->cu_mask |= U32_ATTR_CLASSID;
99 if (tb[TCA_U32_LINK]) {
101 u->cu_mask |= U32_ATTR_LINK;
104 if (tb[TCA_U32_ACT]) {
105 u->cu_mask |= U32_ATTR_ACTION;
106 err = rtnl_act_parse(&u->cu_act, tb[TCA_U32_ACT]);
111 if (tb[TCA_U32_POLICE]) {
115 u->cu_mask |= U32_ATTR_POLICE;
118 if (tb[TCA_U32_PCNT]) {
119 struct tc_u32_sel *sel;
122 if (!tb[TCA_U32_SEL]) {
123 err = -NLE_MISSING_ATTR;
127 sel = u->cu_selector->d_data;
128 pcnt_size =
sizeof(
struct tc_u32_pcnt) +
129 (sel->nkeys *
sizeof(uint64_t));
130 if (
nla_len(tb[TCA_U32_PCNT]) < pcnt_size) {
138 u->cu_mask |= U32_ATTR_PCNT;
141 if (tb[TCA_U32_INDEV]) {
142 nla_strlcpy(u->cu_indev, tb[TCA_U32_INDEV], IFNAMSIZ);
143 u->cu_mask |= U32_ATTR_INDEV;
154 static void u32_free_data(
struct rtnl_tc *tc,
void *data)
156 struct rtnl_u32 *u = data;
159 rtnl_act_put_all(&u->cu_act);
165 static int u32_clone(
void *_dst,
void *_src)
167 struct rtnl_u32 *dst = _dst, *src = _src;
169 if (src->cu_selector &&
173 if (src->cu_act && !(dst->cu_act = rtnl_act_alloc()))
175 memcpy(dst->cu_act, src->cu_act,
sizeof(
struct rtnl_act));
177 if (src->cu_police && !(dst->cu_police =
nl_data_clone(src->cu_police)))
180 if (src->cu_pcnt && !(dst->cu_pcnt =
nl_data_clone(src->cu_pcnt)))
186 static void u32_dump_line(
struct rtnl_tc *tc,
void *data,
189 struct rtnl_u32 *u = data;
195 if (u->cu_mask & U32_ATTR_DIVISOR)
196 nl_dump(p,
" divisor %u", u->cu_divisor);
197 else if (u->cu_mask & U32_ATTR_CLASSID)
202 static void print_selector(
struct nl_dump_params *p,
struct tc_u32_sel *sel,
206 struct tc_u32_key *key;
208 if (sel->hmask || sel->hoff) {
213 nl_dump(p,
" hash at %u & 0x%x", sel->hoff, sel->hmask);
216 if (sel->flags & (TC_U32_OFFSET | TC_U32_VAROFFSET)) {
217 nl_dump(p,
" offset at %u", sel->off);
219 if (sel->flags & TC_U32_VAROFFSET)
220 nl_dump(p,
" variable (at %u & 0x%x) >> %u",
221 sel->offoff, ntohs(sel->offmask), sel->offshift);
225 int flags = sel->flags;
228 #define PRINT_FLAG(f) if (flags & TC_U32_##f) { \
229 flags &= ~TC_U32_##f; nl_dump(p, #f "%s", flags ? "," : ""); }
231 PRINT_FLAG(TERMINAL);
233 PRINT_FLAG(VAROFFSET);
241 for (i = 0; i < sel->nkeys; i++) {
242 key = (
struct tc_u32_key *) ((
char *) sel +
sizeof(*sel)) + i;
245 nl_dump_line(p,
" match key at %s%u ",
246 key->offmask ?
"nexthdr+" :
"", key->off);
249 nl_dump(p,
"[0x%u] ", key->offmask);
251 nl_dump(p,
"& 0x%08x == 0x%08x", ntohl(key->mask), ntohl(key->val));
254 (u->cu_mask & U32_ATTR_PCNT)) {
255 struct tc_u32_pcnt *pcnt = u->cu_pcnt->d_data;
256 nl_dump(p,
" successful %" PRIu64, pcnt->kcnts[i]);
261 static void u32_dump_details(
struct rtnl_tc *tc,
void *data,
264 struct rtnl_u32 *u = data;
265 struct tc_u32_sel *s;
270 if (!(u->cu_mask & U32_ATTR_SELECTOR)) {
275 s = u->cu_selector->d_data;
277 nl_dump(p,
"nkeys %u ", s->nkeys);
279 if (u->cu_mask & U32_ATTR_HASH)
280 nl_dump(p,
"ht key 0x%x hash 0x%u",
281 TC_U32_USERHTID(u->cu_hash), TC_U32_HASH(u->cu_hash));
283 if (u->cu_mask & U32_ATTR_LINK)
284 nl_dump(p,
"link %u ", u->cu_link);
286 if (u->cu_mask & U32_ATTR_INDEV)
287 nl_dump(p,
"indev %s ", u->cu_indev);
289 print_selector(p, s, u);
293 #define U32_ATTR_ACTION 0x040
294 #define U32_ATTR_POLICE 0x080
297 struct nl_data police;
301 static void u32_dump_stats(
struct rtnl_tc *tc,
void *data,
304 struct rtnl_u32 *u = data;
309 if (u->cu_mask & U32_ATTR_PCNT) {
310 struct tc_u32_pcnt *pc = u->cu_pcnt->d_data;
312 nl_dump_line(p,
" hit %8" PRIu64
" count %8" PRIu64
"\n",
317 static int u32_msg_fill(
struct rtnl_tc *tc,
void *data,
struct nl_msg *msg)
319 struct rtnl_u32 *u = data;
324 if (u->cu_mask & U32_ATTR_DIVISOR)
327 if (u->cu_mask & U32_ATTR_HASH)
330 if (u->cu_mask & U32_ATTR_CLASSID)
333 if (u->cu_mask & U32_ATTR_LINK)
336 if (u->cu_mask & U32_ATTR_SELECTOR)
339 if (u->cu_mask & U32_ATTR_ACTION) {
342 err = rtnl_act_fill(msg, TCA_U32_ACT, u->cu_act);
347 if (u->cu_mask & U32_ATTR_POLICE)
350 if (u->cu_mask & U32_ATTR_INDEV)
364 void rtnl_u32_set_handle(
struct rtnl_cls *cls,
int htid,
int hash,
367 uint32_t handle = (htid << 20) | (hash << 12) | nodeid;
372 int rtnl_u32_set_classid(
struct rtnl_cls *cls, uint32_t classid)
379 u->cu_classid = classid;
380 u->cu_mask |= U32_ATTR_CLASSID;
385 int rtnl_u32_set_divisor(
struct rtnl_cls *cls, uint32_t divisor)
392 u->cu_divisor = divisor;
393 u->cu_mask |= U32_ATTR_DIVISOR;
397 int rtnl_u32_set_link(
struct rtnl_cls *cls, uint32_t link)
405 u->cu_mask |= U32_ATTR_LINK;
409 int rtnl_u32_set_hashtable(
struct rtnl_cls *cls, uint32_t ht)
417 u->cu_mask |= U32_ATTR_HASH;
421 int rtnl_u32_set_hashmask(
struct rtnl_cls *cls, uint32_t hashmask, uint32_t offset)
424 struct tc_u32_sel *sel;
427 hashmask = htonl(hashmask);
432 sel = u32_selector_alloc(u);
436 err =
nl_data_append(u->cu_selector, NULL,
sizeof(
struct tc_u32_key));
440 sel = u32_selector(u);
442 sel->hmask = hashmask;
447 int rtnl_u32_set_cls_terminal(
struct rtnl_cls *cls)
450 struct tc_u32_sel *sel;
456 sel = u32_selector_alloc(u);
460 err =
nl_data_append(u->cu_selector, NULL,
sizeof(
struct tc_u32_key));
464 sel = u32_selector(u);
466 sel->flags |= TC_U32_TERMINAL;
470 int rtnl_u32_add_action(
struct rtnl_cls *cls,
struct rtnl_act *act)
480 u->cu_mask |= U32_ATTR_ACTION;
481 return rtnl_act_append(&u->cu_act, act);
484 int rtnl_u32_del_action(
struct rtnl_cls *cls,
struct rtnl_act *act)
495 if (!(u->cu_mask & U32_ATTR_ACTION))
498 ret = rtnl_act_remove(&u->cu_act, act);
500 u->cu_mask &= ~U32_ATTR_ACTION;
510 int rtnl_u32_set_flags(
struct rtnl_cls *cls,
int flags)
512 struct tc_u32_sel *sel;
518 sel = u32_selector_alloc(u);
523 u->cu_mask |= U32_ATTR_SELECTOR;
543 int off,
int offmask)
545 struct tc_u32_sel *sel;
552 sel = u32_selector_alloc(u);
556 err =
nl_data_append(u->cu_selector, NULL,
sizeof(
struct tc_u32_key));
561 sel = u32_selector(u);
563 sel->keys[sel->nkeys].mask = mask;
564 sel->keys[sel->nkeys].val = val & mask;
565 sel->keys[sel->nkeys].off = off;
566 sel->keys[sel->nkeys].offmask = offmask;
568 u->cu_mask |= U32_ATTR_SELECTOR;
585 uint32_t *val, uint32_t *mask,
int *off,
int *offmask)
587 struct tc_u32_sel *sel;
593 if (!(u->cu_mask & U32_ATTR_SELECTOR))
597 sel = u32_selector(u);
598 if (index >= sel->nkeys)
601 *mask = sel->keys[index].mask;
602 *val = sel->keys[index].val;
603 *off = sel->keys[index].off;
604 *offmask = sel->keys[index].offmask;
609 int rtnl_u32_add_key_uint8(
struct rtnl_cls *cls, uint8_t val, uint8_t mask,
610 int off,
int offmask)
612 int shift = 24 - 8 * (off & 3);
615 htonl((uint32_t)mask << shift),
629 int off,
int offmask)
631 int shift = ((off & 3) == 0 ? 16 : 0);
636 htonl((uint32_t)mask << shift),
650 int off,
int offmask)
656 int rtnl_u32_add_key_in_addr(
struct rtnl_cls *cls,
struct in_addr *addr,
657 uint8_t bitmask,
int off,
int offmask)
659 uint32_t mask = 0xFFFFFFFF << (32 - bitmask);
663 int rtnl_u32_add_key_in6_addr(
struct rtnl_cls *cls,
struct in6_addr *addr,
664 uint8_t bitmask,
int off,
int offmask)
668 for (i = 1; i <= 4; i++) {
669 if (32 * i - bitmask <= 0) {
671 0xFFFFFFFF, off+4*(i-1), offmask)) < 0)
674 else if (32 * i - bitmask < 32) {
675 uint32_t mask = 0xFFFFFFFF << (32 * i - bitmask);
677 htonl(mask), off+4*(i-1), offmask)) < 0)
688 static struct rtnl_tc_ops u32_ops = {
690 .to_type = RTNL_TC_TYPE_CLS,
691 .to_size =
sizeof(
struct rtnl_u32),
692 .to_msg_parser = u32_msg_parser,
693 .to_free_data = u32_free_data,
694 .to_clone = u32_clone,
695 .to_msg_fill = u32_msg_fill,
703 static void __init u32_init(
void)
708 static void __exit u32_exit(
void)