19#include "nl-default.h"
21#include <linux/if_tunnel.h>
23#include <netlink/netlink.h>
24#include <netlink/attr.h>
25#include <netlink/utils.h>
26#include <netlink/object.h>
27#include <netlink/route/rtnl.h>
28#include <netlink/route/link/sit.h>
33#define SIT_ATTR_LINK (1 << 0)
34#define SIT_ATTR_LOCAL (1 << 1)
35#define SIT_ATTR_REMOTE (1 << 2)
36#define SIT_ATTR_TTL (1 << 3)
37#define SIT_ATTR_TOS (1 << 4)
38#define SIT_ATTR_PMTUDISC (1 << 5)
39#define SIT_ATTR_FLAGS (1 << 6)
40#define SIT_ATTR_PROTO (1 << 7)
41#define SIT_ATTR_6RD_PREFIX (1 << 8)
42#define SIT_ATTR_6RD_RELAY_PREFIX (1 << 9)
43#define SIT_ATTR_6RD_PREFIXLEN (1 << 10)
44#define SIT_ATTR_6RD_RELAY_PREFIXLEN (1 << 11)
45#define SIT_ATTR_FWMARK (1 << 12)
57 struct in6_addr ip6rd_prefix;
58 uint32_t ip6rd_relay_prefix;
59 uint16_t ip6rd_prefixlen;
60 uint16_t ip6rd_relay_prefixlen;
65static struct nla_policy sit_policy[IFLA_IPTUN_MAX + 1] = {
67 [IFLA_IPTUN_LOCAL] = { .type =
NLA_U32 },
68 [IFLA_IPTUN_REMOTE] = { .type =
NLA_U32 },
69 [IFLA_IPTUN_TTL] = { .type =
NLA_U8 },
70 [IFLA_IPTUN_TOS] = { .type =
NLA_U8 },
71 [IFLA_IPTUN_PMTUDISC] = { .type =
NLA_U8 },
72 [IFLA_IPTUN_FLAGS] = { .type =
NLA_U16 },
73 [IFLA_IPTUN_PROTO] = { .type =
NLA_U8 },
74 [IFLA_IPTUN_6RD_PREFIX] = { .minlen =
sizeof(
struct in6_addr) },
75 [IFLA_IPTUN_6RD_RELAY_PREFIX] = { .type =
NLA_U32 },
76 [IFLA_IPTUN_6RD_PREFIXLEN] = { .type =
NLA_U16 },
77 [IFLA_IPTUN_6RD_RELAY_PREFIXLEN] = { .type =
NLA_U16 },
78 [IFLA_IPTUN_FWMARK] = { .type =
NLA_U32 },
81static int sit_alloc(
struct rtnl_link *link)
86 memset(link->l_info, 0,
sizeof(*sit));
88 sit = calloc(1,
sizeof(*sit));
98static int sit_parse(
struct rtnl_link *link,
struct nlattr *data,
99 struct nlattr *xstats)
101 struct nlattr *tb[IFLA_IPTUN_MAX + 1];
105 NL_DBG(3,
"Parsing SIT link info\n");
111 err = sit_alloc(link);
117 if (tb[IFLA_IPTUN_LINK]) {
119 sit->sit_mask |= SIT_ATTR_LINK;
122 if (tb[IFLA_IPTUN_LOCAL]) {
124 sit->sit_mask |= SIT_ATTR_LOCAL;
127 if (tb[IFLA_IPTUN_REMOTE]) {
129 sit->sit_mask |= SIT_ATTR_REMOTE;
132 if (tb[IFLA_IPTUN_TTL]) {
134 sit->sit_mask |= SIT_ATTR_TTL;
137 if (tb[IFLA_IPTUN_TOS]) {
139 sit->sit_mask |= SIT_ATTR_TOS;
142 if (tb[IFLA_IPTUN_PMTUDISC]) {
143 sit->pmtudisc =
nla_get_u8(tb[IFLA_IPTUN_PMTUDISC]);
144 sit->sit_mask |= SIT_ATTR_PMTUDISC;
147 if (tb[IFLA_IPTUN_FLAGS]) {
149 sit->sit_mask |= SIT_ATTR_FLAGS;
152 if (tb[IFLA_IPTUN_PROTO]) {
153 sit->proto =
nla_get_u8(tb[IFLA_IPTUN_PROTO]);
154 sit->sit_mask |= SIT_ATTR_PROTO;
157 if (tb[IFLA_IPTUN_6RD_PREFIX]) {
158 nla_memcpy(&sit->ip6rd_prefix, tb[IFLA_IPTUN_6RD_PREFIX],
159 sizeof(
struct in6_addr));
160 sit->sit_mask |= SIT_ATTR_6RD_PREFIX;
163 if (tb[IFLA_IPTUN_6RD_RELAY_PREFIX]) {
164 sit->ip6rd_relay_prefix =
nla_get_u32(tb[IFLA_IPTUN_6RD_RELAY_PREFIX]);
165 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIX;
168 if (tb[IFLA_IPTUN_6RD_PREFIXLEN]) {
169 sit->ip6rd_prefixlen =
nla_get_u16(tb[IFLA_IPTUN_6RD_PREFIXLEN]);
170 sit->sit_mask |= SIT_ATTR_6RD_PREFIXLEN;
173 if (tb[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]) {
174 sit->ip6rd_relay_prefixlen =
nla_get_u16(tb[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]);
175 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIXLEN;
178 if (tb[IFLA_IPTUN_FWMARK]) {
180 sit->sit_mask |= SIT_ATTR_FWMARK;
189static int sit_put_attrs(
struct nl_msg *msg,
struct rtnl_link *link)
191 struct sit_info *sit = link->l_info;
198 if (sit->sit_mask & SIT_ATTR_LINK)
201 if (sit->sit_mask & SIT_ATTR_LOCAL)
204 if (sit->sit_mask & SIT_ATTR_REMOTE)
207 if (sit->sit_mask & SIT_ATTR_TTL)
210 if (sit->sit_mask & SIT_ATTR_TOS)
213 if (sit->sit_mask & SIT_ATTR_PMTUDISC)
214 NLA_PUT_U8(msg, IFLA_IPTUN_PMTUDISC, sit->pmtudisc);
216 if (sit->sit_mask & SIT_ATTR_FLAGS)
219 if (sit->sit_mask & SIT_ATTR_PROTO)
220 NLA_PUT_U8(msg, IFLA_IPTUN_PROTO, sit->proto);
222 if (sit->sit_mask & SIT_ATTR_6RD_PREFIX)
223 NLA_PUT(msg, IFLA_IPTUN_6RD_PREFIX,
sizeof(
struct in6_addr), &sit->ip6rd_prefix);
225 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX)
226 NLA_PUT_U32(msg, IFLA_IPTUN_6RD_RELAY_PREFIX, sit->ip6rd_relay_prefix);
228 if (sit->sit_mask & SIT_ATTR_6RD_PREFIXLEN)
229 NLA_PUT_U16(msg, IFLA_IPTUN_6RD_PREFIXLEN, sit->ip6rd_prefixlen);
231 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIXLEN)
232 NLA_PUT_U16(msg, IFLA_IPTUN_6RD_RELAY_PREFIXLEN, sit->ip6rd_relay_prefixlen);
234 if (sit->sit_mask & SIT_ATTR_FWMARK)
244static void sit_free(
struct rtnl_link *link)
246 struct sit_info *sit = link->l_info;
254 nl_dump(p,
"sit : %s", link->l_name);
259 struct sit_info *sit = link->l_info;
260 char *name, addr[INET_ADDRSTRLEN], addr6[INET6_ADDRSTRLEN];
263 if (sit->sit_mask & SIT_ATTR_LINK) {
267 parent = link_lookup(link->ce_cache, sit->link);
272 nl_dump_line(p,
"%s\n", name);
274 nl_dump_line(p,
"%u\n", sit->link);
277 if (sit->sit_mask & SIT_ATTR_LOCAL) {
279 if(inet_ntop(AF_INET, &sit->local, addr,
sizeof(addr)))
280 nl_dump_line(p,
"%s\n", addr);
282 nl_dump_line(p,
"%#x\n", ntohs(sit->local));
285 if (sit->sit_mask & SIT_ATTR_REMOTE) {
287 if(inet_ntop(AF_INET, &sit->remote, addr,
sizeof(addr)))
288 nl_dump_line(p,
"%s\n", addr);
290 nl_dump_line(p,
"%#x\n", ntohs(sit->remote));
293 if (sit->sit_mask & SIT_ATTR_TTL) {
295 nl_dump_line(p,
"%u\n", sit->ttl);
298 if (sit->sit_mask & SIT_ATTR_TOS) {
300 nl_dump_line(p,
"%u\n", sit->tos);
303 if (sit->sit_mask & SIT_ATTR_FLAGS) {
305 nl_dump_line(p,
" (%x)\n", sit->flags);
308 if (sit->sit_mask & SIT_ATTR_PROTO) {
310 nl_dump_line(p,
" (%x)\n", sit->proto);
313 if (sit->sit_mask & SIT_ATTR_6RD_PREFIX) {
315 if(inet_ntop(AF_INET6, &sit->ip6rd_prefix, addr6, INET6_ADDRSTRLEN))
316 nl_dump_line(p,
"%s\n", addr6);
318 nl_dump_line(p,
"[unknown]\n");
321 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX) {
322 nl_dump(p,
" 6rd_relay_prefix ");
323 if(inet_ntop(AF_INET, &sit->ip6rd_relay_prefix, addr,
sizeof(addr)))
324 nl_dump_line(p,
"%s\n", addr);
326 nl_dump_line(p,
"[unknown]\n");
329 if (sit->sit_mask & SIT_ATTR_6RD_PREFIXLEN) {
331 nl_dump_line(p,
"%d\n", sit->ip6rd_prefixlen);
334 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIXLEN) {
335 nl_dump(p,
" 6rd_relay_prefixlen ");
336 nl_dump_line(p,
"%d\n", sit->ip6rd_relay_prefixlen);
339 if (sit->sit_mask & SIT_ATTR_FWMARK) {
341 nl_dump_line(p,
"%x\n", sit->fwmark);
347 struct sit_info *sit_dst, *sit_src = src->l_info;
356 sit_dst = dst->l_info;
358 if (!sit_dst || !sit_src)
361 memcpy(sit_dst, sit_src,
sizeof(
struct sit_info));
368 .io_alloc = sit_alloc,
369 .io_parse = sit_parse,
374 .io_clone = sit_clone,
375 .io_put_attrs = sit_put_attrs,
379#define IS_SIT_LINK_ASSERT(link, sit) \
380 struct sit_info *sit; \
382 const struct rtnl_link *_link = (link); \
383 if (!_link || _link->l_info_ops != &sit_info_ops) { \
384 APPBUG("Link is not a sit link. set type \"sit\" first."); \
385 return -NLE_OPNOTSUPP; \
387 (sit) = _link->l_info; \
390struct rtnl_link *rtnl_link_sit_alloc(
void)
416 return link->l_info_ops && !strcmp(link->l_info_ops->
io_name,
"sit");
432 link = rtnl_link_sit_alloc();
454 IS_SIT_LINK_ASSERT(link, sit);
457 sit->sit_mask |= SIT_ATTR_LINK;
470 IS_SIT_LINK_ASSERT(link, sit);
484 IS_SIT_LINK_ASSERT(link, sit);
487 sit->sit_mask |= SIT_ATTR_LOCAL;
500 IS_SIT_LINK_ASSERT(link, sit);
514 IS_SIT_LINK_ASSERT(link, sit);
517 sit->sit_mask |= SIT_ATTR_REMOTE;
530 IS_SIT_LINK_ASSERT(link, sit);
544 IS_SIT_LINK_ASSERT(link, sit);
547 sit->sit_mask |= SIT_ATTR_TTL;
560 IS_SIT_LINK_ASSERT(link, sit);
574 IS_SIT_LINK_ASSERT(link, sit);
577 sit->sit_mask |= SIT_ATTR_TOS;
590 IS_SIT_LINK_ASSERT(link, sit);
604 IS_SIT_LINK_ASSERT(link, sit);
606 sit->pmtudisc = pmtudisc;
607 sit->sit_mask |= SIT_ATTR_PMTUDISC;
620 IS_SIT_LINK_ASSERT(link, sit);
622 return sit->pmtudisc;
634 IS_SIT_LINK_ASSERT(link, sit);
637 sit->sit_mask |= SIT_ATTR_FLAGS;
650 IS_SIT_LINK_ASSERT(link, sit);
664 IS_SIT_LINK_ASSERT(link, sit);
667 sit->sit_mask |= SIT_ATTR_PROTO;
680 IS_SIT_LINK_ASSERT(link, sit);
694 IS_SIT_LINK_ASSERT(link, sit);
696 sit->ip6rd_prefix = *prefix;
697 sit->sit_mask |= SIT_ATTR_6RD_PREFIX;
711 IS_SIT_LINK_ASSERT(link, sit);
713 if (!(sit->sit_mask & SIT_ATTR_6RD_PREFIX))
717 *prefix = sit->ip6rd_prefix;
730 IS_SIT_LINK_ASSERT(link, sit);
732 sit->sit_mask |= SIT_ATTR_6RD_PREFIXLEN;
733 sit->ip6rd_prefixlen = prefixlen;
747 IS_SIT_LINK_ASSERT(link, sit);
749 if (!(sit->sit_mask & SIT_ATTR_6RD_PREFIXLEN))
753 *prefixlen = sit->ip6rd_prefixlen;
766 IS_SIT_LINK_ASSERT(link, sit);
768 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIX;
769 sit->ip6rd_relay_prefix = prefix;
783 IS_SIT_LINK_ASSERT(link, sit);
785 if (!(sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX))
789 *prefix = sit->ip6rd_relay_prefix;
802 IS_SIT_LINK_ASSERT(link, sit);
804 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIXLEN;
805 sit->ip6rd_relay_prefixlen = prefixlen;
819 IS_SIT_LINK_ASSERT(link, sit);
821 if (!(sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX))
825 *prefixlen = sit->ip6rd_relay_prefixlen;
838 IS_SIT_LINK_ASSERT(link, sit);
840 sit->fwmark = fwmark;
841 sit->sit_mask |= SIT_ATTR_FWMARK;
855 IS_SIT_LINK_ASSERT(link, sit);
857 if (!(sit->sit_mask & SIT_ATTR_FWMARK))
860 *fwmark = sit->fwmark;
865static void _nl_init sit_init(
void)
870static void _nl_exit sit_exit(
void)
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
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_U8(msg, attrtype, value)
Add 8 bit integer attribute to netlink message.
#define NLA_PUT(msg, attrtype, attrlen, data)
Add unspecific attribute to netlink message.
#define NLA_PUT_U32(msg, attrtype, value)
Add 32 bit integer attribute to netlink message.
uint8_t nla_get_u8(const struct nlattr *nla)
Return value of 8 bit integer attribute.
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.
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of 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.
int rtnl_link_add(struct nl_sock *sk, struct rtnl_link *link, int flags)
Add virtual link.
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
void rtnl_link_set_name(struct rtnl_link *link, const char *name)
Set name of link object.
char * rtnl_link_get_name(struct rtnl_link *link)
Return name of link object.
void rtnl_link_put(struct rtnl_link *link)
Release a link object reference.
int rtnl_link_set_type(struct rtnl_link *link, const char *type)
Set type of link object.
uint8_t rtnl_link_sit_get_proto(struct rtnl_link *link)
Get SIT proto.
int rtnl_link_sit_set_local(struct rtnl_link *link, uint32_t addr)
Set SIT tunnel local address.
int rtnl_link_sit_set_ip6rd_relay_prefix(struct rtnl_link *link, uint32_t prefix)
Set ip6rd relay prefix.
int rtnl_link_sit_set_ip6rd_prefix(struct rtnl_link *link, const struct in6_addr *prefix)
Set ip6rd prefix.
int rtnl_link_sit_set_remote(struct rtnl_link *link, uint32_t addr)
Set SIT tunnel remote address.
int rtnl_link_sit_set_tos(struct rtnl_link *link, uint8_t tos)
Set SIT tunnel tos.
int rtnl_link_sit_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc)
Set SIT tunnel path MTU discovery.
int rtnl_link_sit_set_flags(struct rtnl_link *link, uint16_t flags)
Set SIT tunnel flags.
int rtnl_link_sit_get_ip6rd_relay_prefixlen(struct rtnl_link *link, uint16_t *prefixlen)
Get ip6rd relay prefix length.
int rtnl_link_is_sit(struct rtnl_link *link)
Check if link is a SIT link.
int rtnl_link_sit_get_ip6rd_prefixlen(struct rtnl_link *link, uint16_t *prefixlen)
Get ip6rd prefix length.
uint8_t rtnl_link_sit_get_tos(struct rtnl_link *link)
Get SIT tunnel tos.
uint16_t rtnl_link_sit_get_flags(struct rtnl_link *link)
Get SIT path flags.
int rtnl_link_sit_add(struct nl_sock *sk, const char *name)
Create a new sit tunnel device.
int rtnl_link_sit_get_fwmark(struct rtnl_link *link, uint32_t *fwmark)
Get SIT tunnel fwmark.
uint8_t rtnl_link_sit_get_ttl(struct rtnl_link *link)
Get SIT tunnel ttl.
int rtnl_link_sit_set_fwmark(struct rtnl_link *link, uint32_t fwmark)
Set SIT tunnel fwmark.
int rtnl_link_sit_get_ip6rd_prefix(const struct rtnl_link *link, struct in6_addr *prefix)
Get ip6rd prefix.
int rtnl_link_sit_set_ip6rd_relay_prefixlen(struct rtnl_link *link, uint16_t prefixlen)
Set ip6rd relay prefix length.
int rtnl_link_sit_set_ttl(struct rtnl_link *link, uint8_t ttl)
Set SIT tunnel ttl.
int rtnl_link_sit_set_link(struct rtnl_link *link, uint32_t index)
Set SIT tunnel interface index.
int rtnl_link_sit_set_ip6rd_prefixlen(struct rtnl_link *link, uint16_t prefixlen)
Set ip6rd prefix length.
uint32_t rtnl_link_sit_get_local(struct rtnl_link *link)
Get SIT tunnel local address.
int rtnl_link_sit_set_proto(struct rtnl_link *link, uint8_t proto)
Set SIT tunnel proto.
uint8_t rtnl_link_sit_get_pmtudisc(struct rtnl_link *link)
Get SIT path MTU discovery.
int rtnl_link_sit_get_ip6rd_relay_prefix(const struct rtnl_link *link, uint32_t *prefix)
Get ip6rd prefix length.
uint32_t rtnl_link_sit_get_remote(struct rtnl_link *link)
Get SIT tunnel remote address.
uint32_t rtnl_link_sit_get_link(struct rtnl_link *link)
Get SIT tunnel interface index.
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.
Attribute validation policy.
uint16_t type
Type of attribute or NLA_UNSPEC.
Available operations to modules implementing a link info type.
char * io_name
Name of link info type, must match name on kernel side.