1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2021 Felix Fietkau <nbd@nbd.name>
13 #include <libubox/uloop.h>
17 static int qosify_map_entry_cmp(const void *k1
, const void *k2
, void *ptr
);
19 static int qosify_map_fds
[__CL_MAP_MAX
];
20 static AVL_TREE(map_data
, qosify_map_entry_cmp
, false, NULL
);
21 static LIST_HEAD(map_files
);
22 static uint32_t next_timeout
;
23 static uint8_t qosify_dscp_default
[2] = { 0xff, 0xff };
24 int qosify_map_timeout
;
25 int qosify_active_timeout
;
26 struct qosify_config config
;
28 struct qosify_map_file
{
29 struct list_head list
;
35 const char *type_name
;
36 } qosify_map_info
[] = {
37 [CL_MAP_TCP_PORTS
] = { "tcp_ports", "tcp_port" },
38 [CL_MAP_UDP_PORTS
] = { "udp_ports", "udp_port" },
39 [CL_MAP_IPV4_ADDR
] = { "ipv4_map", "ipv4_addr" },
40 [CL_MAP_IPV6_ADDR
] = { "ipv6_map", "ipv6_addr" },
41 [CL_MAP_CONFIG
] = { "config", "config" },
42 [CL_MAP_DNS
] = { "dns", "dns" },
75 static void qosify_map_timer_cb(struct uloop_timeout
*t
)
80 static struct uloop_timeout qosify_map_timer
= {
81 .cb
= qosify_map_timer_cb
,
84 static uint32_t qosify_gettime(void)
88 clock_gettime(CLOCK_MONOTONIC
, &ts
);
94 qosify_map_path(enum qosify_map_id id
)
96 static char path
[128];
99 if (id
>= ARRAY_SIZE(qosify_map_info
))
102 name
= qosify_map_info
[id
].name
;
106 snprintf(path
, sizeof(path
), "%s/%s", CLASSIFY_DATA_PATH
, name
);
111 static int qosify_map_get_fd(enum qosify_map_id id
)
113 const char *path
= qosify_map_path(id
);
119 fd
= bpf_obj_get(path
);
121 fprintf(stderr
, "Failed to open map %s: %s\n", path
, strerror(errno
));
126 static void qosify_map_clear_list(enum qosify_map_id id
)
128 int fd
= qosify_map_fds
[id
];
131 while (bpf_map_get_next_key(fd
, &key
, &key
) != -1)
132 bpf_map_delete_elem(fd
, &key
);
135 static void __qosify_map_set_dscp_default(enum qosify_map_id id
, uint8_t val
)
137 struct qosify_map_data data
= {
140 int fd
= qosify_map_fds
[id
];
143 val
|= QOSIFY_DSCP_DEFAULT_FLAG
;
145 for (i
= 0; i
< (1 << 16); i
++) {
146 data
.addr
.port
= htons(i
);
147 if (avl_find(&map_data
, &data
))
150 bpf_map_update_elem(fd
, &data
.addr
, &val
, BPF_ANY
);
154 void qosify_map_set_dscp_default(enum qosify_map_id id
, uint8_t val
)
158 if (id
== CL_MAP_TCP_PORTS
)
160 else if (id
== CL_MAP_UDP_PORTS
)
165 if (qosify_dscp_default
[udp
] == val
)
168 qosify_dscp_default
[udp
] = val
;
169 __qosify_map_set_dscp_default(id
, val
);
172 int qosify_map_init(void)
176 for (i
= 0; i
< CL_MAP_DNS
; i
++) {
177 qosify_map_fds
[i
] = qosify_map_get_fd(i
);
178 if (qosify_map_fds
[i
] < 0)
182 qosify_map_clear_list(CL_MAP_IPV4_ADDR
);
183 qosify_map_clear_list(CL_MAP_IPV6_ADDR
);
184 qosify_map_reset_config();
189 static char *str_skip(char *str
, bool space
)
191 while (*str
&& isspace(*str
) == space
)
198 qosify_map_codepoint(const char *val
)
202 for (i
= 0; i
< ARRAY_SIZE(codepoints
); i
++)
203 if (!strcmp(codepoints
[i
].name
, val
))
204 return codepoints
[i
].val
;
209 static int qosify_map_entry_cmp(const void *k1
, const void *k2
, void *ptr
)
211 const struct qosify_map_data
*d1
= k1
;
212 const struct qosify_map_data
*d2
= k2
;
214 if (d1
->id
!= d2
->id
)
215 return d2
->id
- d1
->id
;
217 if (d1
->id
== CL_MAP_DNS
)
218 return strcmp(d1
->addr
.dns
.pattern
, d2
->addr
.dns
.pattern
);
220 return memcmp(&d1
->addr
, &d2
->addr
, sizeof(d1
->addr
));
223 static struct qosify_map_entry
*
224 __qosify_map_alloc_entry(struct qosify_map_data
*data
)
226 struct qosify_map_entry
*e
;
229 if (data
->id
< CL_MAP_DNS
) {
230 e
= calloc(1, sizeof(*e
));
231 memcpy(&e
->data
.addr
, &data
->addr
, sizeof(e
->data
.addr
));
236 e
= calloc_a(sizeof(*e
), &pattern
, strlen(data
->addr
.dns
.pattern
) + 1);
237 strcpy(pattern
, data
->addr
.dns
.pattern
);
238 e
->data
.addr
.dns
.pattern
= pattern
;
239 if (regcomp(&e
->data
.addr
.dns
.regex
, pattern
,
240 REG_EXTENDED
| REG_ICASE
| REG_NOSUB
)) {
248 static void __qosify_map_set_entry(struct qosify_map_data
*data
)
250 int fd
= qosify_map_fds
[data
->id
];
251 struct qosify_map_entry
*e
;
252 bool file
= data
->file
;
254 bool add
= data
->dscp
!= 0xff;
255 uint8_t prev_dscp
= 0xff;
257 e
= avl_find_element(&map_data
, data
, e
, avl
);
262 e
= __qosify_map_alloc_entry(data
);
266 e
->avl
.key
= &e
->data
;
267 e
->data
.id
= data
->id
;
268 avl_insert(&map_data
, &e
->avl
);
270 prev_dscp
= e
->data
.dscp
;
280 e
->data
.file_dscp
= data
->dscp
;
281 if (!e
->data
.user
|| !file
)
282 e
->data
.dscp
= data
->dscp
;
283 } else if (e
->data
.file
&& !file
) {
284 e
->data
.dscp
= e
->data
.file_dscp
;
287 if (e
->data
.dscp
!= prev_dscp
&& data
->id
< CL_MAP_DNS
) {
288 struct qosify_ip_map_val val
= {
289 .dscp
= e
->data
.dscp
,
293 bpf_map_update_elem(fd
, &data
->addr
, &val
, BPF_ANY
);
297 if (qosify_map_timeout
== ~0 || file
) {
302 e
->timeout
= qosify_gettime() + qosify_map_timeout
;
303 delta
= e
->timeout
- next_timeout
;
304 if (next_timeout
&& delta
>= 0)
308 uloop_timeout_set(&qosify_map_timer
, 1);
312 qosify_map_set_port(struct qosify_map_data
*data
, const char *str
)
314 unsigned long start_port
, end_port
;
318 start_port
= end_port
= strtoul(str
, &err
, 0);
321 end_port
= strtoul(err
+ 1, &err
, 0);
326 if (!start_port
|| end_port
< start_port
||
330 for (i
= start_port
; i
<= end_port
; i
++) {
331 data
->addr
.port
= htons(i
);
332 __qosify_map_set_entry(data
);
339 qosify_map_fill_ip(struct qosify_map_data
*data
, const char *str
)
343 if (data
->id
== CL_MAP_IPV6_ADDR
)
348 if (inet_pton(af
, str
, &data
->addr
) != 1)
354 int qosify_map_set_entry(enum qosify_map_id id
, bool file
, const char *str
, uint8_t dscp
)
356 struct qosify_map_data data
= {
364 data
.addr
.dns
.pattern
= str
;
366 case CL_MAP_TCP_PORTS
:
367 case CL_MAP_UDP_PORTS
:
368 return qosify_map_set_port(&data
, str
);
369 case CL_MAP_IPV4_ADDR
:
370 case CL_MAP_IPV6_ADDR
:
371 if (qosify_map_fill_ip(&data
, str
))
378 __qosify_map_set_entry(&data
);
383 int qosify_map_dscp_value(const char *val
)
387 bool fallback
= false;
394 dscp
= strtoul(val
, &err
, 0);
396 dscp
= qosify_map_codepoint(val
);
401 return dscp
+ (fallback
<< 6);
405 qosify_map_dscp_codepoint_str(char *dest
, int len
, uint8_t dscp
)
409 if (dscp
& QOSIFY_DSCP_FALLBACK_FLAG
) {
412 dscp
&= ~QOSIFY_DSCP_FALLBACK_FLAG
;
415 for (i
= 0; i
< ARRAY_SIZE(codepoints
); i
++) {
416 if (codepoints
[i
].val
!= dscp
)
419 snprintf(dest
, len
, "%s", codepoints
[i
].name
);
423 snprintf(dest
, len
, "0x%x", dscp
);
427 qosify_map_parse_line(char *str
)
429 const char *key
, *value
;
432 str
= str_skip(str
, true);
435 str
= str_skip(str
, false);
440 str
= str_skip(str
, true);
443 dscp
= qosify_map_dscp_value(value
);
447 if (!strncmp(key
, "dns:", 4))
448 qosify_map_set_entry(CL_MAP_DNS
, true, key
+ 4, dscp
);
449 if (!strncmp(key
, "tcp:", 4))
450 qosify_map_set_entry(CL_MAP_TCP_PORTS
, true, key
+ 4, dscp
);
451 else if (!strncmp(key
, "udp:", 4))
452 qosify_map_set_entry(CL_MAP_UDP_PORTS
, true, key
+ 4, dscp
);
453 else if (strchr(key
, ':'))
454 qosify_map_set_entry(CL_MAP_IPV6_ADDR
, true, key
, dscp
);
455 else if (strchr(key
, '.'))
456 qosify_map_set_entry(CL_MAP_IPV4_ADDR
, true, key
, dscp
);
459 static int __qosify_map_load_file(const char *file
)
468 f
= fopen(file
, "r");
470 fprintf(stderr
, "Can't open data file %s\n", file
);
474 while (fgets(line
, sizeof(line
), f
)) {
475 cur
= strchr(line
, '#');
479 cur
= line
+ strlen(line
);
483 while (cur
> line
&& isspace(cur
[-1]))
487 qosify_map_parse_line(line
);
495 int qosify_map_load_file(const char *file
)
497 struct qosify_map_file
*f
;
502 f
= calloc(1, sizeof(*f
) + strlen(file
) + 1);
503 strcpy(f
->filename
, file
);
504 list_add_tail(&f
->list
, &map_files
);
506 return __qosify_map_load_file(file
);
509 static void qosify_map_reset_file_entries(void)
511 struct qosify_map_entry
*e
;
513 avl_for_each_element(&map_data
, e
, avl
)
514 e
->data
.file
= false;
517 void qosify_map_clear_files(void)
519 struct qosify_map_file
*f
, *tmp
;
521 qosify_map_reset_file_entries();
523 list_for_each_entry_safe(f
, tmp
, &map_files
, list
) {
529 void qosify_map_reset_config(void)
531 qosify_map_clear_files();
532 qosify_map_set_dscp_default(CL_MAP_TCP_PORTS
, 0);
533 qosify_map_set_dscp_default(CL_MAP_UDP_PORTS
, 0);
534 qosify_map_timeout
= 3600;
535 qosify_active_timeout
= 300;
537 memset(&config
, 0, sizeof(config
));
538 config
.dscp_prio
= 0xff;
539 config
.dscp_bulk
= 0xff;
540 config
.dscp_icmp
= 0xff;
543 void qosify_map_reload(void)
545 struct qosify_map_file
*f
;
547 qosify_map_reset_file_entries();
549 list_for_each_entry(f
, &map_files
, list
)
550 __qosify_map_load_file(f
->filename
);
555 static void qosify_map_free_entry(struct qosify_map_entry
*e
)
557 int fd
= qosify_map_fds
[e
->data
.id
];
559 avl_delete(&map_data
, &e
->avl
);
560 if (e
->data
.id
< CL_MAP_DNS
)
561 bpf_map_delete_elem(fd
, &e
->data
.addr
);
566 qosify_map_entry_refresh_timeout(struct qosify_map_entry
*e
)
568 struct qosify_ip_map_val val
;
569 int fd
= qosify_map_fds
[e
->data
.id
];
571 if (e
->data
.id
!= CL_MAP_IPV4_ADDR
&&
572 e
->data
.id
!= CL_MAP_IPV6_ADDR
)
575 if (bpf_map_lookup_elem(fd
, &e
->data
.addr
, &val
))
581 e
->timeout
= qosify_gettime() + qosify_active_timeout
;
583 bpf_map_update_elem(fd
, &e
->data
.addr
, &val
, BPF_ANY
);
588 void qosify_map_gc(void)
590 struct qosify_map_entry
*e
, *tmp
;
592 uint32_t cur_time
= qosify_gettime();
595 avl_for_each_element_safe(&map_data
, e
, avl
, tmp
) {
598 if (e
->data
.user
&& e
->timeout
!= ~0) {
599 cur_timeout
= e
->timeout
- cur_time
;
600 if (cur_timeout
<= 0 &&
601 qosify_map_entry_refresh_timeout(e
))
602 cur_timeout
= e
->timeout
- cur_time
;
603 if (cur_timeout
<= 0) {
604 e
->data
.user
= false;
605 e
->data
.dscp
= e
->data
.file_dscp
;
606 } else if (!timeout
|| cur_timeout
< timeout
) {
607 timeout
= cur_timeout
;
608 next_timeout
= e
->timeout
;
612 if (e
->data
.file
|| e
->data
.user
)
615 qosify_map_free_entry(e
);
621 uloop_timeout_set(&qosify_map_timer
, timeout
* 1000);
625 int qosify_map_add_dns_host(const char *host
, const char *addr
, const char *type
, int ttl
)
627 struct qosify_map_data data
= {
629 .addr
.dns
.pattern
= "",
631 struct qosify_map_entry
*e
;
632 int prev_timeout
= qosify_map_timeout
;
634 e
= avl_find_ge_element(&map_data
, &data
, e
, avl
);
638 memset(&data
, 0, sizeof(data
));
640 if (!strcmp(type
, "A"))
641 data
.id
= CL_MAP_IPV4_ADDR
;
642 else if (!strcmp(type
, "AAAA"))
643 data
.id
= CL_MAP_IPV6_ADDR
;
647 if (qosify_map_fill_ip(&data
, addr
))
650 avl_for_element_to_last(&map_data
, e
, e
, avl
) {
651 regex_t
*regex
= &e
->data
.addr
.dns
.regex
;
653 if (e
->data
.id
!= CL_MAP_DNS
)
656 if (regexec(regex
, host
, 0, NULL
, 0) != 0)
660 qosify_map_timeout
= ttl
;
661 data
.dscp
= e
->data
.dscp
;
662 __qosify_map_set_entry(&data
);
663 qosify_map_timeout
= prev_timeout
;
670 void qosify_map_dump(struct blob_buf
*b
)
672 struct qosify_map_entry
*e
;
673 uint32_t cur_time
= qosify_gettime();
674 int buf_len
= INET6_ADDRSTRLEN
+ 1;
679 a
= blobmsg_open_array(b
, "entries");
680 avl_for_each_element(&map_data
, e
, avl
) {
683 if (!e
->data
.file
&& !e
->data
.user
)
686 c
= blobmsg_open_table(b
, NULL
);
687 if (e
->data
.user
&& e
->timeout
!= ~0) {
688 int32_t cur_timeout
= e
->timeout
- cur_time
;
693 blobmsg_add_u32(b
, "timeout", cur_timeout
);
696 blobmsg_add_u8(b
, "file", e
->data
.file
);
697 blobmsg_add_u8(b
, "user", e
->data
.user
);
699 buf
= blobmsg_alloc_string_buffer(b
, "dscp", buf_len
);
700 qosify_map_dscp_codepoint_str(buf
, buf_len
, e
->data
.dscp
);
701 blobmsg_add_string_buffer(b
);
703 blobmsg_add_string(b
, "type", qosify_map_info
[e
->data
.id
].type_name
);
705 switch (e
->data
.id
) {
706 case CL_MAP_TCP_PORTS
:
707 case CL_MAP_UDP_PORTS
:
708 blobmsg_printf(b
, "addr", "%d", ntohs(e
->data
.addr
.port
));
710 case CL_MAP_IPV4_ADDR
:
711 case CL_MAP_IPV6_ADDR
:
712 buf
= blobmsg_alloc_string_buffer(b
, "addr", buf_len
);
713 af
= e
->data
.id
== CL_MAP_IPV6_ADDR
? AF_INET6
: AF_INET
;
714 inet_ntop(af
, &e
->data
.addr
, buf
, buf_len
);
715 blobmsg_add_string_buffer(b
);
718 blobmsg_add_string(b
, "addr", e
->data
.addr
.dns
.pattern
);
724 blobmsg_close_table(b
, c
);
726 blobmsg_close_array(b
, a
);
729 void qosify_map_update_config(void)
731 int fd
= qosify_map_fds
[CL_MAP_CONFIG
];
734 bpf_map_update_elem(fd
, &key
, &config
, BPF_ANY
);