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) 47 unsigned int vi_ingress_qos_mask:(VLAN_PRIO_MAX+1);
49 uint32_t vi_flags_mask;
50 uint32_t vi_ingress_qos[VLAN_PRIO_MAX+1];
52 uint32_t vi_egress_size;
59 static struct nla_policy vlan_policy[IFLA_VLAN_MAX+1] = {
61 [IFLA_VLAN_FLAGS] = { .minlen =
sizeof(
struct ifla_vlan_flags) },
62 [IFLA_VLAN_INGRESS_QOS] = { .type =
NLA_NESTED },
63 [IFLA_VLAN_EGRESS_QOS] = { .type =
NLA_NESTED },
64 [IFLA_VLAN_PROTOCOL] = { .type =
NLA_U16 },
67 static int vlan_alloc(
struct rtnl_link *link)
73 free(vi->vi_egress_qos);
74 memset(link->l_info, 0,
sizeof(*vi));
76 if ((vi = calloc(1,
sizeof(*vi))) == NULL)
85 static int vlan_parse(
struct rtnl_link *link,
struct nlattr *data,
86 struct nlattr *xstats)
88 struct nlattr *tb[IFLA_VLAN_MAX+1];
92 NL_DBG(3,
"Parsing VLAN link info\n");
97 if ((err = vlan_alloc(link)) < 0)
102 if (tb[IFLA_VLAN_ID]) {
104 vi->vi_mask |= VLAN_HAS_ID;
107 if (tb[IFLA_VLAN_PROTOCOL]) {
108 vi->vi_protocol =
nla_get_u16(tb[IFLA_VLAN_PROTOCOL]);
109 vi->vi_mask |= VLAN_HAS_PROTOCOL;
112 if (tb[IFLA_VLAN_FLAGS]) {
113 struct ifla_vlan_flags flags;
114 nla_memcpy(&flags, tb[IFLA_VLAN_FLAGS],
sizeof(flags));
116 vi->vi_flags = flags.flags;
117 vi->vi_mask |= VLAN_HAS_FLAGS;
120 if (tb[IFLA_VLAN_INGRESS_QOS]) {
121 struct ifla_vlan_qos_mapping *map;
125 vi->vi_ingress_qos_mask = 0;
126 memset(vi->vi_ingress_qos, 0,
sizeof(vi->vi_ingress_qos));
129 if (
nla_len(nla) <
sizeof(*map))
133 if (map->from > VLAN_PRIO_MAX) {
147 vi->vi_ingress_qos_mask |= (1 << map->from);
148 vi->vi_ingress_qos[map->from] = map->to;
151 vi->vi_mask |= VLAN_HAS_INGRESS_QOS;
154 if (tb[IFLA_VLAN_EGRESS_QOS]) {
155 struct ifla_vlan_qos_mapping *map;
157 int remaining, i = 0;
160 if (
nla_len(nla) <
sizeof(*map))
166 vi->vi_egress_size = (i + 32) & ~31;
167 vi->vi_egress_qos = calloc(vi->vi_egress_size,
sizeof(*vi->vi_egress_qos));
168 if (vi->vi_egress_qos == NULL)
174 NL_DBG(4,
"Assigning egress qos mapping %d\n", i);
175 vi->vi_egress_qos[i].vm_from = map->from;
176 vi->vi_egress_qos[i++].vm_to = map->to;
180 vi->vi_mask |= VLAN_HAS_EGRESS_QOS;
188 static void vlan_free(
struct rtnl_link *link)
190 struct vlan_info *vi = link->l_info;
193 free(vi->vi_egress_qos);
194 vi->vi_egress_qos = NULL;
203 struct vlan_info *vi = link->l_info;
205 nl_dump(p,
"vlan-id %d", vi->vi_vlan_id);
210 struct vlan_info *vi = link->l_info;
215 rtnl_link_vlan_flags2str(vi->vi_flags, buf,
sizeof(buf));
216 nl_dump_line(p,
" vlan-info id %d <%s>", vi->vi_vlan_id, buf);
218 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
219 nl_dump_line(p,
" vlan protocol <%d>", ntohs(vi->vi_protocol));
223 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS) {
225 " ingress vlan prio -> qos/socket prio mapping:\n");
226 for (i = 0, printed = 0; i <= VLAN_PRIO_MAX; i++) {
227 if (vi->vi_ingress_qos_mask & (1 << i)) {
229 nl_dump_line(p,
" ");
231 i, vi->vi_ingress_qos[i]);
232 if (printed++ == 3) {
239 if (printed > 0 && printed != 4)
243 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
245 " egress qos/socket prio -> vlan prio mapping:\n");
246 for (i = 0, printed = 0; i < vi->vi_negress; i++) {
248 nl_dump_line(p,
" ");
250 vi->vi_egress_qos[i].vm_from,
251 vi->vi_egress_qos[i].vm_to);
252 if (printed++ == 3) {
258 if (printed > 0 && printed != 4)
265 struct vlan_info *vdst, *vsrc = src->l_info;
274 if (vsrc->vi_negress) {
275 p = calloc(vsrc->vi_negress,
283 if (vsrc->vi_negress) {
284 vdst->vi_egress_size = vsrc->vi_negress;
285 vdst->vi_egress_qos = p;
286 memcpy(vdst->vi_egress_qos, vsrc->vi_egress_qos,
287 vsrc->vi_negress *
sizeof(
struct vlan_map));
293 static int vlan_put_attrs(
struct nl_msg *msg,
struct rtnl_link *link)
295 struct vlan_info *vi = link->l_info;
301 if (vi->vi_mask & VLAN_HAS_ID)
304 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
305 NLA_PUT_U16(msg, IFLA_VLAN_PROTOCOL, vi->vi_protocol);
307 if (vi->vi_mask & VLAN_HAS_FLAGS) {
308 struct ifla_vlan_flags flags = {
309 .flags = vi->vi_flags,
310 .mask = vi->vi_flags_mask,
313 NLA_PUT(msg, IFLA_VLAN_FLAGS,
sizeof(flags), &flags);
316 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS) {
317 struct ifla_vlan_qos_mapping map;
322 goto nla_put_failure;
324 for (i = 0; i <= VLAN_PRIO_MAX; i++) {
325 if (vi->vi_ingress_qos_mask & (1 << i)) {
327 map.to = vi->vi_ingress_qos[i];
329 NLA_PUT(msg, i,
sizeof(map), &map);
336 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
337 struct ifla_vlan_qos_mapping map;
342 goto nla_put_failure;
344 for (i = 0; i < vi->vi_negress; i++) {
345 map.from = vi->vi_egress_qos[i].vm_from;
346 map.to = vi->vi_egress_qos[i].vm_to;
348 NLA_PUT(msg, i,
sizeof(map), &map);
361 static struct rtnl_link_info_ops vlan_info_ops = {
363 .io_alloc = vlan_alloc,
364 .io_parse = vlan_parse,
369 .io_clone = vlan_clone,
370 .io_put_attrs = vlan_put_attrs,
371 .io_free = vlan_free,
375 #define IS_VLAN_LINK_ASSERT(link) \ 376 if ((link)->l_info_ops != &vlan_info_ops) { \ 377 APPBUG("Link is not a vlan link. set type \"vlan\" first."); \ 378 return -NLE_OPNOTSUPP; \ 416 return link->l_info_ops && !strcmp(link->l_info_ops->io_name,
"vlan");
428 struct vlan_info *vi = link->l_info;
430 IS_VLAN_LINK_ASSERT(link);
433 vi->vi_mask |= VLAN_HAS_ID;
446 struct vlan_info *vi = link->l_info;
448 IS_VLAN_LINK_ASSERT(link);
450 if (vi->vi_mask & VLAN_HAS_ID)
451 return vi->vi_vlan_id;
466 struct vlan_info *vi = link->l_info;
468 IS_VLAN_LINK_ASSERT(link);
470 vi->vi_protocol = protocol;
471 vi->vi_mask |= VLAN_HAS_PROTOCOL;
485 struct vlan_info *vi = link->l_info;
487 IS_VLAN_LINK_ASSERT(link);
489 if (vi->vi_mask & VLAN_HAS_PROTOCOL)
490 return vi->vi_protocol;
504 struct vlan_info *vi = link->l_info;
506 IS_VLAN_LINK_ASSERT(link);
508 vi->vi_flags_mask |= flags;
509 vi->vi_flags |= flags;
510 vi->vi_mask |= VLAN_HAS_FLAGS;
524 struct vlan_info *vi = link->l_info;
526 IS_VLAN_LINK_ASSERT(link);
528 vi->vi_flags_mask |= flags;
529 vi->vi_flags &= ~flags;
530 vi->vi_mask |= VLAN_HAS_FLAGS;
543 struct vlan_info *vi = link->l_info;
545 IS_VLAN_LINK_ASSERT(link);
557 int rtnl_link_vlan_set_ingress_map(
struct rtnl_link *link,
int from,
560 struct vlan_info *vi = link->l_info;
562 IS_VLAN_LINK_ASSERT(link);
564 if (from < 0 || from > VLAN_PRIO_MAX)
567 vi->vi_ingress_qos_mask |= (1 << from);
568 vi->vi_ingress_qos[from] = to;
569 vi->vi_mask |= VLAN_HAS_INGRESS_QOS;
574 uint32_t *rtnl_link_vlan_get_ingress_map(
struct rtnl_link *link)
576 struct vlan_info *vi = link->l_info;
578 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
581 if (vi->vi_mask & VLAN_HAS_INGRESS_QOS)
582 return vi->vi_ingress_qos;
587 int rtnl_link_vlan_set_egress_map(
struct rtnl_link *link, uint32_t from,
int to)
589 struct vlan_info *vi = link->l_info;
591 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
592 return -NLE_OPNOTSUPP;
594 if (to < 0 || to > VLAN_PRIO_MAX)
597 if (vi->vi_negress >= vi->vi_egress_size) {
598 uint32_t new_size = vi->vi_egress_size + 1 + vi->vi_egress_size / 2;
602 if (new_size < vi->vi_egress_size)
604 bytes = (size_t) new_size *
sizeof(
struct vlan_map);
605 if (bytes /
sizeof (
struct vlan_map) != new_size)
607 ptr = realloc(vi->vi_egress_qos, bytes);
611 vi->vi_egress_qos = ptr;
612 vi->vi_egress_size = new_size;
615 vi->vi_egress_qos[vi->vi_negress].vm_from = from;
616 vi->vi_egress_qos[vi->vi_negress].vm_to = to;
618 vi->vi_mask |= VLAN_HAS_EGRESS_QOS;
626 struct vlan_info *vi = link->l_info;
628 if (link->l_info_ops != &vlan_info_ops || !link->l_info_ops)
634 if (vi->vi_mask & VLAN_HAS_EGRESS_QOS) {
635 *negress = vi->vi_negress;
636 return vi->vi_egress_qos;
645 static const struct trans_tbl vlan_flags[] = {
646 __ADD(VLAN_FLAG_REORDER_HDR, reorder_hdr),
647 __ADD(VLAN_FLAG_GVRP, gvrp),
648 __ADD(VLAN_FLAG_LOOSE_BINDING, loose_binding),
649 __ADD(VLAN_FLAG_MVRP, mvrp),
657 char *rtnl_link_vlan_flags2str(
int flags,
char *buf,
size_t len)
659 return __flags2str(flags, buf, len, vlan_flags, ARRAY_SIZE(vlan_flags));
662 int rtnl_link_vlan_str2flags(
const char *name)
664 return __str2flags(name, vlan_flags, ARRAY_SIZE(vlan_flags));
670 static void __init vlan_init(
void)
675 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_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, const struct nla_policy *policy)
Create attribute index based on nested attribute.
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.
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.