19 #include <netlink-private/netlink.h>
20 #include <netlink/netlink.h>
21 #include <netlink/attr.h>
22 #include <netlink/utils.h>
23 #include <netlink/object.h>
24 #include <netlink/route/rtnl.h>
25 #include <netlink-private/route/link/api.h>
26 #include <netlink/route/link/vlan.h>
28 #include <linux/if_vlan.h>
31 #define VLAN_HAS_ID (1<<0)
32 #define VLAN_HAS_FLAGS (1<<1)
33 #define VLAN_HAS_INGRESS_QOS (1<<2)
34 #define VLAN_HAS_EGRESS_QOS (1<<3)
35 #define VLAN_HAS_PROTOCOL (1<<4)
41 unsigned int vi_ingress_qos_mask:(VLAN_PRIO_MAX+1);
43 uint32_t vi_flags_mask;
44 uint32_t vi_ingress_qos[VLAN_PRIO_MAX+1];
46 uint32_t vi_egress_size;
53 static struct nla_policy vlan_policy[IFLA_VLAN_MAX+1] = {
55 [IFLA_VLAN_FLAGS] = { .minlen =
sizeof(
struct ifla_vlan_flags) },
56 [IFLA_VLAN_INGRESS_QOS] = { .type =
NLA_NESTED },
57 [IFLA_VLAN_EGRESS_QOS] = { .type =
NLA_NESTED },
58 [IFLA_VLAN_PROTOCOL] = { .type =
NLA_U16 },
61 static int vlan_alloc(
struct rtnl_link *link)
67 free(vi->vi_egress_qos);
68 memset(link->l_info, 0,
sizeof(*vi));
70 if ((vi = calloc(1,
sizeof(*vi))) == NULL)
79 static int vlan_parse(
struct rtnl_link *link,
struct nlattr *data,
80 struct nlattr *xstats)
82 struct nlattr *tb[IFLA_VLAN_MAX+1];
86 NL_DBG(3,
"Parsing VLAN link info\n");
91 if ((err = vlan_alloc(link)) < 0)
96 if (tb[IFLA_VLAN_ID]) {
98 vi->vi_mask |= VLAN_HAS_ID;
101 if (tb[IFLA_VLAN_PROTOCOL]) {
102 vi->vi_protocol =
nla_get_u16(tb[IFLA_VLAN_PROTOCOL]);
103 vi->vi_mask |= VLAN_HAS_PROTOCOL;
106 if (tb[IFLA_VLAN_FLAGS]) {
107 struct ifla_vlan_flags flags;
108 nla_memcpy(&flags, tb[IFLA_VLAN_FLAGS],
sizeof(flags));
110 vi->vi_flags = flags.flags;
111 vi->vi_mask |= VLAN_HAS_FLAGS;
114 if (tb[IFLA_VLAN_INGRESS_QOS]) {
115 struct ifla_vlan_qos_mapping *map;
119 vi->vi_ingress_qos_mask = 0;
120 memset(vi->vi_ingress_qos, 0,
sizeof(vi->vi_ingress_qos));
123 if (
nla_len(nla) <
sizeof(*map))
127 if (map->from > VLAN_PRIO_MAX) {
141 vi->vi_ingress_qos_mask |= (1 << map->from);
142 vi->vi_ingress_qos[map->from] = map->to;
145 vi->vi_mask |= VLAN_HAS_INGRESS_QOS;
148 if (tb[IFLA_VLAN_EGRESS_QOS]) {
149 struct ifla_vlan_qos_mapping *map;
151 int remaining, i = 0;
154 if (
nla_len(nla) <
sizeof(*map))
160 vi->vi_egress_size = (i + 32) & ~31;
161 vi->vi_egress_qos = calloc(vi->vi_egress_size,
sizeof(*vi->vi_egress_qos));
162 if (vi->vi_egress_qos == NULL)
168 NL_DBG(4,
"Assigning egress qos mapping %d\n", i);
169 vi->vi_egress_qos[i].vm_from = map->from;
170 vi->vi_egress_qos[i++].vm_to = map->to;
174 vi->vi_mask |= VLAN_HAS_EGRESS_QOS;
182 static void vlan_free(
struct rtnl_link *link)
184 struct vlan_info *vi = link->l_info;
187 free(vi->vi_egress_qos);
188 vi->vi_egress_qos = NULL;
197 struct vlan_info *vi = link->l_info;
199 nl_dump(p,
"vlan-id %d", vi->vi_vlan_id);
204 struct vlan_info *vi = link->l_info;
209 rtnl_link_vlan_flags2str(vi->vi_flags, buf,
sizeof(buf));
210 nl_dump_line(p,
" vlan-info id %d <%s>", vi->vi_vlan_id, buf);
212 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
213 nl_dump_line(p,
" vlan protocol <%d>", ntohs(vi->vi_protocol));
217 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS) {
219 " ingress vlan prio -> qos/socket prio mapping:\n");
220 for (i = 0, printed = 0; i <= VLAN_PRIO_MAX; i++) {
221 if (vi->vi_ingress_qos_mask & (1 << i)) {
223 nl_dump_line(p,
" ");
225 i, vi->vi_ingress_qos[i]);
226 if (printed++ == 3) {
233 if (printed > 0 && printed != 4)
237 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
239 " egress qos/socket prio -> vlan prio mapping:\n");
240 for (i = 0, printed = 0; i < vi->vi_negress; i++) {
242 nl_dump_line(p,
" ");
244 vi->vi_egress_qos[i].vm_from,
245 vi->vi_egress_qos[i].vm_to);
246 if (printed++ == 3) {
252 if (printed > 0 && printed != 4)
259 struct vlan_info *vdst, *vsrc = src->l_info;
268 if (vsrc->vi_negress) {
269 p = calloc(vsrc->vi_negress,
277 if (vsrc->vi_negress) {
278 vdst->vi_egress_size = vsrc->vi_negress;
279 vdst->vi_egress_qos = p;
280 memcpy(vdst->vi_egress_qos, vsrc->vi_egress_qos,
281 vsrc->vi_negress *
sizeof(
struct vlan_map));
287 static int vlan_put_attrs(
struct nl_msg *msg,
struct rtnl_link *link)
289 struct vlan_info *vi = link->l_info;
295 if (vi->vi_mask & VLAN_HAS_ID)
298 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
299 NLA_PUT_U16(msg, IFLA_VLAN_PROTOCOL, vi->vi_protocol);
301 if (vi->vi_mask & VLAN_HAS_FLAGS) {
302 struct ifla_vlan_flags flags = {
303 .flags = vi->vi_flags,
304 .mask = vi->vi_flags_mask,
307 NLA_PUT(msg, IFLA_VLAN_FLAGS,
sizeof(flags), &flags);
310 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS) {
311 struct ifla_vlan_qos_mapping map;
316 goto nla_put_failure;
318 for (i = 0; i <= VLAN_PRIO_MAX; i++) {
319 if (vi->vi_ingress_qos_mask & (1 << i)) {
321 map.to = vi->vi_ingress_qos[i];
323 NLA_PUT(msg, i,
sizeof(map), &map);
330 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
331 struct ifla_vlan_qos_mapping map;
336 goto nla_put_failure;
338 for (i = 0; i < vi->vi_negress; i++) {
339 map.from = vi->vi_egress_qos[i].vm_from;
340 map.to = vi->vi_egress_qos[i].vm_to;
342 NLA_PUT(msg, i,
sizeof(map), &map);
355 static struct rtnl_link_info_ops vlan_info_ops = {
357 .io_alloc = vlan_alloc,
358 .io_parse = vlan_parse,
363 .io_clone = vlan_clone,
364 .io_put_attrs = vlan_put_attrs,
365 .io_free = vlan_free,
369 #define IS_VLAN_LINK_ASSERT(link) \
370 if ((link)->l_info_ops != &vlan_info_ops) { \
371 APPBUG("Link is not a vlan link. set type \"vlan\" first."); \
372 return -NLE_OPNOTSUPP; \
409 return link->l_info_ops && !strcmp(link->l_info_ops->io_name,
"vlan");
421 struct vlan_info *vi = link->l_info;
423 IS_VLAN_LINK_ASSERT(link);
426 vi->vi_mask |= VLAN_HAS_ID;
439 struct vlan_info *vi = link->l_info;
441 IS_VLAN_LINK_ASSERT(link);
443 if (vi->vi_mask & VLAN_HAS_ID)
444 return vi->vi_vlan_id;
459 struct vlan_info *vi = link->l_info;
461 IS_VLAN_LINK_ASSERT(link);
463 vi->vi_protocol = protocol;
464 vi->vi_mask |= VLAN_HAS_PROTOCOL;
478 struct vlan_info *vi = link->l_info;
480 IS_VLAN_LINK_ASSERT(link);
482 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
483 return vi->vi_protocol;
497 struct vlan_info *vi = link->l_info;
499 IS_VLAN_LINK_ASSERT(link);
501 vi->vi_flags_mask |= flags;
502 vi->vi_flags |= flags;
503 vi->vi_mask |= VLAN_HAS_FLAGS;
517 struct vlan_info *vi = link->l_info;
519 IS_VLAN_LINK_ASSERT(link);
521 vi->vi_flags_mask |= flags;
522 vi->vi_flags &= ~flags;
523 vi->vi_mask |= VLAN_HAS_FLAGS;
536 struct vlan_info *vi = link->l_info;
538 IS_VLAN_LINK_ASSERT(link);
550 int rtnl_link_vlan_set_ingress_map(
struct rtnl_link *link,
int from,
553 struct vlan_info *vi = link->l_info;
555 IS_VLAN_LINK_ASSERT(link);
557 if (from < 0 || from > VLAN_PRIO_MAX)
560 vi->vi_ingress_qos_mask |= (1 << from);
561 vi->vi_ingress_qos[from] = to;
562 vi->vi_mask |= VLAN_HAS_INGRESS_QOS;
567 uint32_t *rtnl_link_vlan_get_ingress_map(
struct rtnl_link *link)
569 struct vlan_info *vi = link->l_info;
571 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
574 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS)
575 return vi->vi_ingress_qos;
580 int rtnl_link_vlan_set_egress_map(
struct rtnl_link *link, uint32_t from,
int to)
582 struct vlan_info *vi = link->l_info;
584 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
585 return -NLE_OPNOTSUPP;
587 if (to < 0 || to > VLAN_PRIO_MAX)
590 if (vi->vi_negress >= vi->vi_egress_size) {
591 uint32_t new_size = vi->vi_egress_size + 1 + vi->vi_egress_size / 2;
595 if (new_size < vi->vi_egress_size)
597 bytes = (size_t) new_size *
sizeof(
struct vlan_map);
598 if (bytes /
sizeof (
struct vlan_map) != new_size)
600 ptr = realloc(vi->vi_egress_qos, bytes);
604 vi->vi_egress_qos = ptr;
605 vi->vi_egress_size = new_size;
608 vi->vi_egress_qos[vi->vi_negress].vm_from = from;
609 vi->vi_egress_qos[vi->vi_negress].vm_to = to;
611 vi->vi_mask |= VLAN_HAS_EGRESS_QOS;
619 struct vlan_info *vi = link->l_info;
621 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
627 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
628 *negress = vi->vi_negress;
629 return vi->vi_egress_qos;
638 static const struct trans_tbl vlan_flags[] = {
639 __ADD(VLAN_FLAG_REORDER_HDR, reorder_hdr),
640 __ADD(VLAN_FLAG_GVRP, gvrp),
641 __ADD(VLAN_FLAG_LOOSE_BINDING, loose_binding),
642 __ADD(VLAN_FLAG_MVRP, mvrp),
643 __ADD(VLAN_FLAG_BRIDGE_BINDING, bridge_binding),
651 char *rtnl_link_vlan_flags2str(
int flags,
char *buf,
size_t len)
653 return __flags2str(flags, buf, len, vlan_flags, ARRAY_SIZE(vlan_flags));
656 int rtnl_link_vlan_str2flags(
const char *name)
658 return __str2flags(name, vlan_flags, ARRAY_SIZE(vlan_flags));
664 static void __init vlan_init(
void)
669 static void __exit vlan_exit(
void)
uint16_t nla_get_u16(const struct nlattr *nla)
Return payload of 16 bit integer attribute.
#define NLA_PUT_U16(msg, attrtype, value)
Add 16 bit integer attribute to netlink message.
#define NLA_PUT(msg, attrtype, attrlen, data)
Add unspecific attribute to netlink message.
int nla_memcpy(void *dest, const struct nlattr *src, int count)
Copy attribute payload to another memory area.
struct nlattr * nla_nest_start(struct nl_msg *msg, int attrtype)
Start a new level of nested attributes.
int nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, const struct nla_policy *policy)
Create attribute index based on nested attribute.
#define nla_for_each_nested(pos, nla, rem)
Iterate over a stream of nested attributes.
int nla_len(const struct nlattr *nla)
Return length of the payload .
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of attributes.
void * nla_data(const struct nlattr *nla)
Return pointer to the payload section.
@ NLA_NESTED
Nested attributes.
int rtnl_link_register_info(struct rtnl_link_info_ops *ops)
Register operations for a link info type.
int rtnl_link_unregister_info(struct rtnl_link_info_ops *ops)
Unregister operations for a link info type.
void rtnl_link_put(struct rtnl_link *link)
Return a link object reference.
int rtnl_link_set_type(struct rtnl_link *link, const char *type)
Set type of link object.
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
@ NL_DUMP_LINE
Dump object briefly on one line.
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
int rtnl_link_vlan_get_protocol(struct rtnl_link *link)
Get VLAN protocol.
struct rtnl_link * rtnl_link_vlan_alloc(void)
Allocate link object of type VLAN.
int rtnl_link_vlan_unset_flags(struct rtnl_link *link, unsigned int flags)
Unset VLAN flags.
int rtnl_link_vlan_set_id(struct rtnl_link *link, uint16_t id)
Set VLAN ID.
int rtnl_link_vlan_set_protocol(struct rtnl_link *link, uint16_t protocol)
Set VLAN protocol.
int rtnl_link_is_vlan(struct rtnl_link *link)
Check if link is a VLAN link.
int rtnl_link_vlan_get_id(struct rtnl_link *link)
Get VLAN Id.
int rtnl_link_vlan_set_flags(struct rtnl_link *link, unsigned int flags)
Set VLAN flags.
int rtnl_link_vlan_get_flags(struct rtnl_link *link)
Get VLAN flags.
Attribute validation policy.
uint16_t type
Type of attribute or NLA_UNSPEC.