25 #include <netlink-private/netlink.h>
26 #include <netlink/netlink.h>
27 #include <netlink/attr.h>
28 #include <netlink/utils.h>
29 #include <netlink/object.h>
30 #include <netlink/route/rtnl.h>
31 #include <netlink-private/route/link/api.h>
32 #include <netlink/route/link/vlan.h>
34 #include <linux/if_vlan.h>
37 #define VLAN_HAS_ID (1<<0)
38 #define VLAN_HAS_FLAGS (1<<1)
39 #define VLAN_HAS_INGRESS_QOS (1<<2)
40 #define VLAN_HAS_EGRESS_QOS (1<<3)
41 #define VLAN_HAS_PROTOCOL (1<<4)
48 uint32_t vi_flags_mask;
49 uint32_t vi_ingress_qos[VLAN_PRIO_MAX+1];
51 uint32_t vi_egress_size;
58 static struct nla_policy vlan_policy[IFLA_VLAN_MAX+1] = {
60 [IFLA_VLAN_FLAGS] = { .minlen =
sizeof(
struct ifla_vlan_flags) },
61 [IFLA_VLAN_INGRESS_QOS] = { .type =
NLA_NESTED },
62 [IFLA_VLAN_EGRESS_QOS] = { .type =
NLA_NESTED },
63 [IFLA_VLAN_PROTOCOL] = { .type =
NLA_U16 },
66 static int vlan_alloc(
struct rtnl_link *link)
72 free(vi->vi_egress_qos);
73 memset(link->l_info, 0,
sizeof(*vi));
75 if ((vi = calloc(1,
sizeof(*vi))) == NULL)
84 static int vlan_parse(
struct rtnl_link *link,
struct nlattr *data,
85 struct nlattr *xstats)
87 struct nlattr *tb[IFLA_VLAN_MAX+1];
91 NL_DBG(3,
"Parsing VLAN link info\n");
96 if ((err = vlan_alloc(link)) < 0)
101 if (tb[IFLA_VLAN_ID]) {
103 vi->vi_mask |= VLAN_HAS_ID;
106 if (tb[IFLA_VLAN_PROTOCOL]) {
107 vi->vi_protocol =
nla_get_u16(tb[IFLA_VLAN_PROTOCOL]);
108 vi->vi_mask |= VLAN_HAS_PROTOCOL;
111 if (tb[IFLA_VLAN_FLAGS]) {
112 struct ifla_vlan_flags flags;
113 nla_memcpy(&flags, tb[IFLA_VLAN_FLAGS],
sizeof(flags));
115 vi->vi_flags = flags.flags;
116 vi->vi_mask |= VLAN_HAS_FLAGS;
119 if (tb[IFLA_VLAN_INGRESS_QOS]) {
120 struct ifla_vlan_qos_mapping *map;
124 memset(vi->vi_ingress_qos, 0,
sizeof(vi->vi_ingress_qos));
127 if (
nla_len(nla) <
sizeof(*map))
131 if (map->from > VLAN_PRIO_MAX) {
135 vi->vi_ingress_qos[map->from] = map->to;
138 vi->vi_mask |= VLAN_HAS_INGRESS_QOS;
141 if (tb[IFLA_VLAN_EGRESS_QOS]) {
142 struct ifla_vlan_qos_mapping *map;
144 int remaining, i = 0;
147 if (
nla_len(nla) <
sizeof(*map))
153 vi->vi_egress_size = (i + 32) & ~31;
154 vi->vi_egress_qos = calloc(vi->vi_egress_size,
sizeof(*vi->vi_egress_qos));
155 if (vi->vi_egress_qos == NULL)
161 NL_DBG(4,
"Assigning egress qos mapping %d\n", i);
162 vi->vi_egress_qos[i].vm_from = map->from;
163 vi->vi_egress_qos[i++].vm_to = map->to;
167 vi->vi_mask |= VLAN_HAS_EGRESS_QOS;
175 static void vlan_free(
struct rtnl_link *link)
177 struct vlan_info *vi = link->l_info;
180 free(vi->vi_egress_qos);
181 vi->vi_egress_qos = NULL;
190 struct vlan_info *vi = link->l_info;
192 nl_dump(p,
"vlan-id %d", vi->vi_vlan_id);
197 struct vlan_info *vi = link->l_info;
202 rtnl_link_vlan_flags2str(vi->vi_flags, buf,
sizeof(buf));
203 nl_dump_line(p,
" vlan-info id %d <%s>", vi->vi_vlan_id, buf);
205 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
206 nl_dump_line(p,
" vlan protocol <%d>", vi->vi_protocol);
210 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS) {
212 " ingress vlan prio -> qos/socket prio mapping:\n");
213 for (i = 0, printed = 0; i <= VLAN_PRIO_MAX; i++) {
214 if (vi->vi_ingress_qos[i]) {
216 nl_dump_line(p,
" ");
218 i, vi->vi_ingress_qos[i]);
219 if (printed++ == 3) {
226 if (printed > 0 && printed != 4)
230 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
232 " egress qos/socket prio -> vlan prio mapping:\n");
233 for (i = 0, printed = 0; i < vi->vi_negress; i++) {
235 nl_dump_line(p,
" ");
237 vi->vi_egress_qos[i].vm_from,
238 vi->vi_egress_qos[i].vm_to);
239 if (printed++ == 3) {
245 if (printed > 0 && printed != 4)
252 struct vlan_info *vdst, *vsrc = src->l_info;
260 vdst->vi_egress_qos = calloc(vsrc->vi_egress_size,
262 if (!vdst->vi_egress_qos)
265 memcpy(vdst->vi_egress_qos, vsrc->vi_egress_qos,
266 vsrc->vi_egress_size *
sizeof(
struct vlan_map));
271 static int vlan_put_attrs(
struct nl_msg *msg,
struct rtnl_link *link)
273 struct vlan_info *vi = link->l_info;
279 if (vi->vi_mask & VLAN_HAS_ID)
282 if (vi->vi_mask & VLAN_HAS_FLAGS) {
283 struct ifla_vlan_flags flags = {
284 .flags = vi->vi_flags,
285 .mask = vi->vi_flags_mask,
288 NLA_PUT(msg, IFLA_VLAN_FLAGS,
sizeof(flags), &flags);
291 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS) {
292 struct ifla_vlan_qos_mapping map;
297 goto nla_put_failure;
299 for (i = 0; i <= VLAN_PRIO_MAX; i++) {
300 if (vi->vi_ingress_qos[i]) {
302 map.to = vi->vi_ingress_qos[i];
304 NLA_PUT(msg, i,
sizeof(map), &map);
311 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
312 struct ifla_vlan_qos_mapping map;
317 goto nla_put_failure;
319 for (i = 0; i < vi->vi_negress; i++) {
320 map.from = vi->vi_egress_qos[i].vm_from;
321 map.to = vi->vi_egress_qos[i].vm_to;
323 NLA_PUT(msg, i,
sizeof(map), &map);
336 static struct rtnl_link_info_ops vlan_info_ops = {
338 .io_alloc = vlan_alloc,
339 .io_parse = vlan_parse,
344 .io_clone = vlan_clone,
345 .io_put_attrs = vlan_put_attrs,
346 .io_free = vlan_free,
350 #define IS_VLAN_LINK_ASSERT(link) \
351 if ((link)->l_info_ops != &vlan_info_ops) { \
352 APPBUG("Link is not a vlan link. set type \"vlan\" first."); \
353 return -NLE_OPNOTSUPP; \
391 return link->l_info_ops && !strcmp(link->l_info_ops->io_name,
"vlan");
403 struct vlan_info *vi = link->l_info;
405 IS_VLAN_LINK_ASSERT(link);
408 vi->vi_mask |= VLAN_HAS_ID;
421 struct vlan_info *vi = link->l_info;
423 IS_VLAN_LINK_ASSERT(link);
425 if (vi->vi_mask & VLAN_HAS_ID)
426 return vi->vi_vlan_id;
440 struct vlan_info *vi = link->l_info;
442 IS_VLAN_LINK_ASSERT(link);
444 vi->vi_protocol = protocol;
445 vi->vi_mask |= VLAN_HAS_PROTOCOL;
458 struct vlan_info *vi = link->l_info;
460 IS_VLAN_LINK_ASSERT(link);
462 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
463 return vi->vi_protocol;
477 struct vlan_info *vi = link->l_info;
479 IS_VLAN_LINK_ASSERT(link);
481 vi->vi_flags_mask |= flags;
482 vi->vi_flags |= flags;
483 vi->vi_mask |= VLAN_HAS_FLAGS;
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;
516 struct vlan_info *vi = link->l_info;
518 IS_VLAN_LINK_ASSERT(link);
530 int rtnl_link_vlan_set_ingress_map(
struct rtnl_link *link,
int from,
533 struct vlan_info *vi = link->l_info;
535 IS_VLAN_LINK_ASSERT(link);
537 if (from < 0 || from > VLAN_PRIO_MAX)
540 vi->vi_ingress_qos[from] = to;
541 vi->vi_mask |= VLAN_HAS_INGRESS_QOS;
546 uint32_t *rtnl_link_vlan_get_ingress_map(
struct rtnl_link *link)
548 struct vlan_info *vi = link->l_info;
550 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
553 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS)
554 return vi->vi_ingress_qos;
559 int rtnl_link_vlan_set_egress_map(
struct rtnl_link *link, uint32_t from,
int to)
561 struct vlan_info *vi = link->l_info;
563 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
564 return -NLE_OPNOTSUPP;
566 if (to < 0 || to > VLAN_PRIO_MAX)
569 if (vi->vi_negress >= vi->vi_egress_size) {
570 int new_size = vi->vi_egress_size + 32;
573 ptr = realloc(vi->vi_egress_qos, new_size);
577 vi->vi_egress_qos = ptr;
578 vi->vi_egress_size = new_size;
581 vi->vi_egress_qos[vi->vi_negress].vm_from = from;
582 vi->vi_egress_qos[vi->vi_negress].vm_to = to;
584 vi->vi_mask |= VLAN_HAS_EGRESS_QOS;
592 struct vlan_info *vi = link->l_info;
594 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
600 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
601 *negress = vi->vi_negress;
602 return vi->vi_egress_qos;
611 static const struct trans_tbl vlan_flags[] = {
612 __ADD(VLAN_FLAG_REORDER_HDR, reorder_hdr),
613 __ADD(VLAN_FLAG_GVRP, gvrp),
614 __ADD(VLAN_FLAG_LOOSE_BINDING, loose_binding),
615 __ADD(VLAN_FLAG_MVRP, mvrp),
623 char *rtnl_link_vlan_flags2str(
int flags,
char *buf,
size_t len)
625 return __flags2str(flags, buf, len, vlan_flags, ARRAY_SIZE(vlan_flags));
628 int rtnl_link_vlan_str2flags(
const char *name)
630 return __str2flags(name, vlan_flags, ARRAY_SIZE(vlan_flags));
636 static void __init vlan_init(
void)
641 static void __exit vlan_exit(
void)
Dump object briefly on one line.
int rtnl_link_vlan_set_flags(struct rtnl_link *link, unsigned int flags)
Set VLAN flags.
struct rtnl_link * rtnl_link_vlan_alloc(void)
Allocate link object of type VLAN.
int rtnl_link_register_info(struct rtnl_link_info_ops *ops)
Register operations for a link info type.
int rtnl_link_vlan_get_flags(struct rtnl_link *link)
Get VLAN flags.
Attribute validation policy.
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
Dump all attributes but no statistics.
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of attributes.
int nla_memcpy(void *dest, const struct nlattr *src, int count)
Copy attribute payload to another memory area.
#define NLA_PUT(msg, attrtype, attrlen, data)
Add unspecific attribute to netlink message.
int nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, struct nla_policy *policy)
Create attribute index based on nested attribute.
void * nla_data(const struct nlattr *nla)
Return pointer to the payload section.
int rtnl_link_vlan_get_id(struct rtnl_link *link)
Get VLAN Id.
int rtnl_link_set_type(struct rtnl_link *link, const char *type)
Set type of link object.
int nla_len(const struct nlattr *nla)
Return length of the payload .
#define nla_for_each_nested(pos, nla, rem)
Iterate over a stream of nested attributes.
int rtnl_link_vlan_get_protocol(struct rtnl_link *link)
Get VLAN protocol.
int rtnl_link_vlan_unset_flags(struct rtnl_link *link, unsigned int flags)
Unset VLAN flags.
int rtnl_link_unregister_info(struct rtnl_link_info_ops *ops)
Unregister operations for a link info type.
uint16_t type
Type of attribute or NLA_UNSPEC.
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.
int rtnl_link_vlan_set_protocol(struct rtnl_link *link, uint16_t protocol)
Set VLAN protocol.
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
void rtnl_link_put(struct rtnl_link *link)
Return a link object reference.
int rtnl_link_is_vlan(struct rtnl_link *link)
Check if link is a VLAN link.
struct nlattr * nla_nest_start(struct nl_msg *msg, int attrtype)
Start a new level of nested attributes.
int rtnl_link_vlan_set_id(struct rtnl_link *link, uint16_t id)
Set VLAN ID.