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/route/link/sit.h> 32 #include <netlink-private/route/link/api.h> 33 #include <linux/if_tunnel.h> 35 #define SIT_ATTR_LINK (1 << 0) 36 #define SIT_ATTR_LOCAL (1 << 1) 37 #define SIT_ATTR_REMOTE (1 << 2) 38 #define SIT_ATTR_TTL (1 << 3) 39 #define SIT_ATTR_TOS (1 << 4) 40 #define SIT_ATTR_PMTUDISC (1 << 5) 41 #define SIT_ATTR_FLAGS (1 << 6) 42 #define SIT_ATTR_PROTO (1 << 7) 43 #define SIT_ATTR_6RD_PREFIX (1 << 8) 44 #define SIT_ATTR_6RD_RELAY_PREFIX (1 << 9) 45 #define SIT_ATTR_6RD_PREFIXLEN (1 << 10) 46 #define SIT_ATTR_6RD_RELAY_PREFIXLEN (1 << 11) 58 struct in6_addr ip6rd_prefix;
59 uint32_t ip6rd_relay_prefix;
60 uint16_t ip6rd_prefixlen;
61 uint16_t ip6rd_relay_prefixlen;
65 static 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 },
80 static int sit_alloc(
struct rtnl_link *link)
85 memset(link->l_info, 0,
sizeof(*sit));
87 sit = calloc(1,
sizeof(*sit));
97 static int sit_parse(
struct rtnl_link *link,
struct nlattr *data,
98 struct nlattr *xstats)
100 struct nlattr *tb[IFLA_IPTUN_MAX + 1];
104 NL_DBG(3,
"Parsing SIT link info\n");
110 err = sit_alloc(link);
116 if (tb[IFLA_IPTUN_LINK]) {
118 sit->sit_mask |= SIT_ATTR_LINK;
121 if (tb[IFLA_IPTUN_LOCAL]) {
123 sit->sit_mask |= SIT_ATTR_LOCAL;
126 if (tb[IFLA_IPTUN_REMOTE]) {
128 sit->sit_mask |= SIT_ATTR_REMOTE;
131 if (tb[IFLA_IPTUN_TTL]) {
133 sit->sit_mask |= SIT_ATTR_TTL;
136 if (tb[IFLA_IPTUN_TOS]) {
138 sit->sit_mask |= SIT_ATTR_TOS;
141 if (tb[IFLA_IPTUN_PMTUDISC]) {
142 sit->pmtudisc =
nla_get_u8(tb[IFLA_IPTUN_PMTUDISC]);
143 sit->sit_mask |= SIT_ATTR_PMTUDISC;
146 if (tb[IFLA_IPTUN_FLAGS]) {
148 sit->sit_mask |= SIT_ATTR_FLAGS;
151 if (tb[IFLA_IPTUN_PROTO]) {
152 sit->proto =
nla_get_u8(tb[IFLA_IPTUN_PROTO]);
153 sit->sit_mask |= SIT_ATTR_PROTO;
156 if (tb[IFLA_IPTUN_6RD_PREFIX]) {
157 nla_memcpy(&sit->ip6rd_prefix, tb[IFLA_IPTUN_6RD_PREFIX],
158 sizeof(
struct in6_addr));
159 sit->sit_mask |= SIT_ATTR_6RD_PREFIX;
162 if (tb[IFLA_IPTUN_6RD_RELAY_PREFIX]) {
163 sit->ip6rd_relay_prefix =
nla_get_u32(tb[IFLA_IPTUN_6RD_RELAY_PREFIX]);
164 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIX;
167 if (tb[IFLA_IPTUN_6RD_PREFIXLEN]) {
168 sit->ip6rd_prefixlen =
nla_get_u16(tb[IFLA_IPTUN_6RD_PREFIXLEN]);
169 sit->sit_mask |= SIT_ATTR_6RD_PREFIXLEN;
172 if (tb[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]) {
173 sit->ip6rd_relay_prefixlen =
nla_get_u16(tb[IFLA_IPTUN_6RD_RELAY_PREFIXLEN]);
174 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIXLEN;
183 static int sit_put_attrs(
struct nl_msg *msg,
struct rtnl_link *link)
185 struct sit_info *sit = link->l_info;
192 if (sit->sit_mask & SIT_ATTR_LINK)
195 if (sit->sit_mask & SIT_ATTR_LOCAL)
198 if (sit->sit_mask & SIT_ATTR_REMOTE)
201 if (sit->sit_mask & SIT_ATTR_TTL)
204 if (sit->sit_mask & SIT_ATTR_TOS)
207 if (sit->sit_mask & SIT_ATTR_PMTUDISC)
208 NLA_PUT_U8(msg, IFLA_IPTUN_PMTUDISC, sit->pmtudisc);
210 if (sit->sit_mask & SIT_ATTR_FLAGS)
213 if (sit->sit_mask & SIT_ATTR_PROTO)
214 NLA_PUT_U8(msg, IFLA_IPTUN_PROTO, sit->proto);
216 if (sit->sit_mask & SIT_ATTR_6RD_PREFIX)
217 NLA_PUT(msg, IFLA_IPTUN_6RD_PREFIX,
sizeof(
struct in6_addr), &sit->ip6rd_prefix);
219 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX)
220 NLA_PUT_U32(msg, IFLA_IPTUN_6RD_RELAY_PREFIX, sit->ip6rd_relay_prefix);
222 if (sit->sit_mask & SIT_ATTR_6RD_PREFIXLEN)
223 NLA_PUT_U16(msg, IFLA_IPTUN_6RD_PREFIXLEN, sit->ip6rd_prefixlen);
225 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIXLEN)
226 NLA_PUT_U16(msg, IFLA_IPTUN_6RD_RELAY_PREFIXLEN, sit->ip6rd_relay_prefixlen);
235 static void sit_free(
struct rtnl_link *link)
237 struct sit_info *sit = link->l_info;
245 nl_dump(p,
"sit : %s", link->l_name);
250 struct sit_info *sit = link->l_info;
251 char *name, addr[INET_ADDRSTRLEN], addr6[INET6_ADDRSTRLEN];
254 if (sit->sit_mask & SIT_ATTR_LINK) {
258 parent = link_lookup(link->ce_cache, sit->link);
263 nl_dump_line(p,
"%s\n", name);
265 nl_dump_line(p,
"%u\n", sit->link);
268 if (sit->sit_mask & SIT_ATTR_LOCAL) {
270 if(inet_ntop(AF_INET, &sit->local, addr,
sizeof(addr)))
271 nl_dump_line(p,
"%s\n", addr);
273 nl_dump_line(p,
"%#x\n", ntohs(sit->local));
276 if (sit->sit_mask & SIT_ATTR_REMOTE) {
278 if(inet_ntop(AF_INET, &sit->remote, addr,
sizeof(addr)))
279 nl_dump_line(p,
"%s\n", addr);
281 nl_dump_line(p,
"%#x\n", ntohs(sit->remote));
284 if (sit->sit_mask & SIT_ATTR_TTL) {
286 nl_dump_line(p,
"%u\n", sit->ttl);
289 if (sit->sit_mask & SIT_ATTR_TOS) {
291 nl_dump_line(p,
"%u\n", sit->tos);
294 if (sit->sit_mask & SIT_ATTR_FLAGS) {
296 nl_dump_line(p,
" (%x)\n", sit->flags);
299 if (sit->sit_mask & SIT_ATTR_PROTO) {
301 nl_dump_line(p,
" (%x)\n", sit->proto);
304 if (sit->sit_mask & SIT_ATTR_6RD_PREFIX) {
306 if(inet_ntop(AF_INET6, &sit->ip6rd_prefix, addr6, INET6_ADDRSTRLEN))
307 nl_dump_line(p,
"%s\n", addr6);
309 nl_dump_line(p,
"[unknown]\n");
312 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX) {
313 nl_dump(p,
" 6rd_relay_prefix ");
314 if(inet_ntop(AF_INET, &sit->ip6rd_relay_prefix, addr,
sizeof(addr)))
315 nl_dump_line(p,
"%s\n", addr);
317 nl_dump_line(p,
"[unknown]\n");
320 if (sit->sit_mask & SIT_ATTR_6RD_PREFIXLEN) {
322 nl_dump_line(p,
"%d\n", sit->ip6rd_prefixlen);
325 if (sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIXLEN) {
326 nl_dump(p,
" 6rd_relay_prefixlen ");
327 nl_dump_line(p,
"%d\n", sit->ip6rd_relay_prefixlen);
333 struct sit_info *sit_dst, *sit_src = src->l_info;
342 sit_dst = dst->l_info;
344 if (!sit_dst || !sit_src)
347 memcpy(sit_dst, sit_src,
sizeof(
struct sit_info));
352 static struct rtnl_link_info_ops sit_info_ops = {
354 .io_alloc = sit_alloc,
355 .io_parse = sit_parse,
360 .io_clone = sit_clone,
361 .io_put_attrs = sit_put_attrs,
365 #define IS_SIT_LINK_ASSERT(link, sit) \ 366 struct sit_info *sit; \ 368 const struct rtnl_link *_link = (link); \ 369 if (!_link || _link->l_info_ops != &sit_info_ops) { \ 370 APPBUG("Link is not a sit link. set type \"sit\" first."); \ 371 return -NLE_OPNOTSUPP; \ 373 (sit) = _link->l_info; \ 376 struct rtnl_link *rtnl_link_sit_alloc(
void)
402 return link->l_info_ops && !strcmp(link->l_info_ops->io_name,
"sit");
418 link = rtnl_link_sit_alloc();
440 IS_SIT_LINK_ASSERT(link, sit);
443 sit->sit_mask |= SIT_ATTR_LINK;
456 IS_SIT_LINK_ASSERT(link, sit);
470 IS_SIT_LINK_ASSERT(link, sit);
473 sit->sit_mask |= SIT_ATTR_LOCAL;
486 IS_SIT_LINK_ASSERT(link, sit);
500 IS_SIT_LINK_ASSERT(link, sit);
503 sit->sit_mask |= SIT_ATTR_REMOTE;
516 IS_SIT_LINK_ASSERT(link, sit);
530 IS_SIT_LINK_ASSERT(link, sit);
533 sit->sit_mask |= SIT_ATTR_TTL;
546 IS_SIT_LINK_ASSERT(link, sit);
560 IS_SIT_LINK_ASSERT(link, sit);
563 sit->sit_mask |= SIT_ATTR_TOS;
576 IS_SIT_LINK_ASSERT(link, sit);
590 IS_SIT_LINK_ASSERT(link, sit);
592 sit->pmtudisc = pmtudisc;
593 sit->sit_mask |= SIT_ATTR_PMTUDISC;
606 IS_SIT_LINK_ASSERT(link, sit);
608 return sit->pmtudisc;
620 IS_SIT_LINK_ASSERT(link, sit);
623 sit->sit_mask |= SIT_ATTR_FLAGS;
636 IS_SIT_LINK_ASSERT(link, sit);
650 IS_SIT_LINK_ASSERT(link, sit);
653 sit->sit_mask |= SIT_ATTR_PROTO;
666 IS_SIT_LINK_ASSERT(link, sit);
680 IS_SIT_LINK_ASSERT(link, sit);
682 sit->ip6rd_prefix = *prefix;
683 sit->sit_mask |= SIT_ATTR_6RD_PREFIX;
697 IS_SIT_LINK_ASSERT(link, sit);
699 if (!(sit->sit_mask & SIT_ATTR_6RD_PREFIX))
703 *prefix = sit->ip6rd_prefix;
716 IS_SIT_LINK_ASSERT(link, sit);
718 sit->sit_mask |= SIT_ATTR_6RD_PREFIXLEN;
719 sit->ip6rd_prefixlen = prefixlen;
733 IS_SIT_LINK_ASSERT(link, sit);
735 if (!(sit->sit_mask & SIT_ATTR_6RD_PREFIXLEN))
739 *prefixlen = sit->ip6rd_prefixlen;
752 IS_SIT_LINK_ASSERT(link, sit);
754 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIX;
755 sit->ip6rd_relay_prefix = prefix;
769 IS_SIT_LINK_ASSERT(link, sit);
771 if (!(sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX))
775 *prefix = sit->ip6rd_relay_prefix;
788 IS_SIT_LINK_ASSERT(link, sit);
790 sit->sit_mask |= SIT_ATTR_6RD_RELAY_PREFIXLEN;
791 sit->ip6rd_relay_prefixlen = prefixlen;
805 IS_SIT_LINK_ASSERT(link, sit);
807 if (!(sit->sit_mask & SIT_ATTR_6RD_RELAY_PREFIX))
811 *prefixlen = sit->ip6rd_relay_prefixlen;
815 static void __init sit_init(
void)
820 static void __exit sit_exit(
void)
Dump object briefly on one line.
int rtnl_link_register_info(struct rtnl_link_info_ops *ops)
Register operations for a link info type.
int rtnl_link_sit_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc)
Set SIT tunnel path MTU discovery.
Attribute validation policy.
uint8_t nla_get_u8(const struct nlattr *nla)
Return value of 8 bit integer attribute.
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
uint16_t rtnl_link_sit_get_flags(struct rtnl_link *link)
Get SIT path flags.
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
int rtnl_link_sit_set_ip6rd_prefixlen(struct rtnl_link *link, uint16_t prefixlen)
Set ip6rd prefix length.
int rtnl_link_sit_get_ip6rd_prefixlen(struct rtnl_link *link, uint16_t *prefixlen)
Get ip6rd prefix length.
int rtnl_link_sit_set_proto(struct rtnl_link *link, uint8_t proto)
Set SIT tunnel proto.
#define NLA_PUT_U8(msg, attrtype, value)
Add 8 bit integer attribute to netlink message.
Dump all attributes but no statistics.
char * rtnl_link_get_name(struct rtnl_link *link)
Return name of link object.
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of attributes.
int rtnl_link_sit_set_remote(struct rtnl_link *link, uint32_t addr)
Set SIT tunnel remote address.
uint32_t rtnl_link_sit_get_remote(struct rtnl_link *link)
Get SIT tunnel remote address.
int rtnl_link_sit_set_ttl(struct rtnl_link *link, uint8_t ttl)
Set SIT tunnel ttl.
int nla_memcpy(void *dest, const struct nlattr *src, int count)
Copy attribute payload to another memory area.
uint8_t rtnl_link_sit_get_ttl(struct rtnl_link *link)
Get SIT tunnel ttl.
#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.
int rtnl_link_sit_get_ip6rd_relay_prefixlen(struct rtnl_link *link, uint16_t *prefixlen)
Get ip6rd relay prefix length.
uint8_t rtnl_link_sit_get_proto(struct rtnl_link *link)
Get SIT proto.
int rtnl_link_sit_set_ip6rd_prefix(struct rtnl_link *link, const struct in6_addr *prefix)
Set ip6rd prefix.
void rtnl_link_set_name(struct rtnl_link *link, const char *name)
Set name of link object.
int rtnl_link_sit_get_ip6rd_relay_prefix(const struct rtnl_link *link, uint32_t *prefix)
Get ip6rd prefix length.
int rtnl_link_sit_add(struct nl_sock *sk, const char *name)
Create a new sit tunnel device.
int rtnl_link_set_type(struct rtnl_link *link, const char *type)
Set type of link object.
#define NLA_PUT_U32(msg, attrtype, value)
Add 32 bit integer attribute to netlink message.
int rtnl_link_sit_get_ip6rd_prefix(const struct rtnl_link *link, struct in6_addr *prefix)
Get ip6rd prefix.
uint32_t rtnl_link_sit_get_local(struct rtnl_link *link)
Get SIT tunnel local address.
int rtnl_link_sit_set_link(struct rtnl_link *link, uint32_t index)
Set SIT tunnel interface index.
uint8_t rtnl_link_sit_get_pmtudisc(struct rtnl_link *link)
Get SIT path MTU discovery.
int rtnl_link_unregister_info(struct rtnl_link_info_ops *ops)
Unregister operations for a link info type.
uint8_t rtnl_link_sit_get_tos(struct rtnl_link *link)
Get SIT tunnel tos.
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.
int rtnl_link_sit_set_ip6rd_relay_prefixlen(struct rtnl_link *link, uint16_t prefixlen)
Set ip6rd relay prefix length.
#define NLA_PUT_U16(msg, attrtype, value)
Add 16 bit integer attribute to netlink message.
int rtnl_link_sit_set_tos(struct rtnl_link *link, uint8_t tos)
Set SIT tunnel tos.
uint32_t rtnl_link_sit_get_link(struct rtnl_link *link)
Get SIT tunnel interface index.
int rtnl_link_sit_set_ip6rd_relay_prefix(struct rtnl_link *link, uint32_t prefix)
Set ip6rd relay prefix.
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_sit_set_local(struct rtnl_link *link, uint32_t addr)
Set SIT tunnel local address.
int rtnl_link_add(struct nl_sock *sk, struct rtnl_link *link, int flags)
Add virtual link.
int rtnl_link_is_sit(struct rtnl_link *link)
Check if link is a SIT link.
struct nlattr * nla_nest_start(struct nl_msg *msg, int attrtype)
Start a new level of nested attributes.
int rtnl_link_sit_set_flags(struct rtnl_link *link, uint16_t flags)
Set SIT tunnel flags.