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unplugged-system/external/libnl/lib/route/link/ip6gre.c

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/* SPDX-License-Identifier: LGPL-2.1-only */
/**
* @ingroup link
* @defgroup ip6gre IP6GRE
* ip6gre link module
*
* @details
* \b Link Type Name: "ip6gre"
*
* @route_doc{link_ip6gre, IP6GRE Documentation}
*
* @{
*/
#include <netlink-private/netlink.h>
#include <netlink/netlink.h>
#include <netlink/attr.h>
#include <netlink/utils.h>
#include <netlink/object.h>
#include <netlink/route/rtnl.h>
#include <netlink/route/link/ip6gre.h>
#include <netlink-private/route/link/api.h>
#include <linux/if_tunnel.h>
#define IP6GRE_ATTR_LINK (1 << 0)
#define IP6GRE_ATTR_IFLAGS (1 << 1)
#define IP6GRE_ATTR_OFLAGS (1 << 2)
#define IP6GRE_ATTR_IKEY (1 << 3)
#define IP6GRE_ATTR_OKEY (1 << 4)
#define IP6GRE_ATTR_LOCAL (1 << 5)
#define IP6GRE_ATTR_REMOTE (1 << 6)
#define IP6GRE_ATTR_TTL (1 << 7)
#define IP6GRE_ATTR_ENCAPLIMIT (1 << 8)
#define IP6GRE_ATTR_FLOWINFO (1 << 9)
#define IP6GRE_ATTR_FLAGS (1 << 10)
#define IP6GRE_ATTR_FWMARK (1 << 11)
struct ip6gre_info
{
uint8_t ttl;
uint8_t encaplimit;
uint16_t iflags;
uint16_t oflags;
uint32_t ikey;
uint32_t okey;
uint32_t link;
uint32_t flowinfo;
uint32_t flags;
struct in6_addr local;
struct in6_addr remote;
uint32_t fwmark;
uint32_t ip6gre_mask;
};
static struct nla_policy ip6gre_policy[IFLA_GRE_MAX + 1] = {
[IFLA_GRE_LINK] = { .type = NLA_U32 },
[IFLA_GRE_IFLAGS] = { .type = NLA_U16 },
[IFLA_GRE_OFLAGS] = { .type = NLA_U16 },
[IFLA_GRE_IKEY] = { .type = NLA_U32 },
[IFLA_GRE_OKEY] = { .type = NLA_U32 },
[IFLA_GRE_LOCAL] = { .minlen = sizeof(struct in6_addr) },
[IFLA_GRE_REMOTE] = { .minlen = sizeof(struct in6_addr) },
[IFLA_GRE_TTL] = { .type = NLA_U8 },
[IFLA_GRE_ENCAP_LIMIT] = { .type = NLA_U8 },
[IFLA_GRE_FLOWINFO] = { .type = NLA_U32 },
[IFLA_GRE_FLAGS] = { .type = NLA_U32 },
[IFLA_GRE_FWMARK] = { .type = NLA_U32 },
};
static int ip6gre_alloc(struct rtnl_link *link)
{
struct ip6gre_info *ip6gre;
if (link->l_info)
memset(link->l_info, 0, sizeof(*ip6gre));
else {
ip6gre = calloc(1, sizeof(*ip6gre));
if (!ip6gre)
return -NLE_NOMEM;
link->l_info = ip6gre;
}
return 0;
}
static int ip6gre_parse(struct rtnl_link *link, struct nlattr *data,
struct nlattr *xstats)
{
struct nlattr *tb[IFLA_GRE_MAX + 1];
struct ip6gre_info *ip6gre;
int err;
NL_DBG(3, "Parsing IP6GRE link info\n");
err = nla_parse_nested(tb, IFLA_GRE_MAX, data, ip6gre_policy);
if (err < 0)
goto errout;
err = ip6gre_alloc(link);
if (err < 0)
goto errout;
ip6gre = link->l_info;
if (tb[IFLA_GRE_LINK]) {
ip6gre->link = nla_get_u32(tb[IFLA_GRE_LINK]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_LINK;
}
if (tb[IFLA_GRE_IFLAGS]) {
ip6gre->iflags = nla_get_u16(tb[IFLA_GRE_IFLAGS]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_IFLAGS;
}
if (tb[IFLA_GRE_OFLAGS]) {
ip6gre->oflags = nla_get_u16(tb[IFLA_GRE_OFLAGS]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_OFLAGS;
}
if (tb[IFLA_GRE_IKEY]) {
ip6gre->ikey = nla_get_u32(tb[IFLA_GRE_IKEY]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_IKEY;
}
if (tb[IFLA_GRE_OKEY]) {
ip6gre->okey = nla_get_u32(tb[IFLA_GRE_OKEY]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_OKEY;
}
if (tb[IFLA_GRE_LOCAL]) {
nla_memcpy(&ip6gre->local, tb[IFLA_GRE_LOCAL], sizeof(struct in6_addr));
ip6gre->ip6gre_mask |= IP6GRE_ATTR_LOCAL;
}
if (tb[IFLA_GRE_REMOTE]) {
nla_memcpy(&ip6gre->remote, tb[IFLA_GRE_REMOTE], sizeof(struct in6_addr));
ip6gre->ip6gre_mask |= IP6GRE_ATTR_REMOTE;
}
if (tb[IFLA_GRE_TTL]) {
ip6gre->ttl = nla_get_u8(tb[IFLA_GRE_TTL]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_TTL;
}
if (tb[IFLA_GRE_ENCAP_LIMIT]) {
ip6gre->encaplimit = nla_get_u8(tb[IFLA_GRE_ENCAP_LIMIT]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_ENCAPLIMIT;
}
if (tb[IFLA_GRE_FLOWINFO]) {
ip6gre->flowinfo = nla_get_u32(tb[IFLA_GRE_FLOWINFO]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_FLOWINFO;
}
if (tb[IFLA_GRE_FLAGS]) {
ip6gre->flags = nla_get_u32(tb[IFLA_GRE_FLAGS]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_FLAGS;
}
if (tb[IFLA_GRE_FWMARK]) {
ip6gre->fwmark = nla_get_u32(tb[IFLA_GRE_FWMARK]);
ip6gre->ip6gre_mask |= IP6GRE_ATTR_FWMARK;
}
err = 0;
errout:
return err;
}
static int ip6gre_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
{
struct ip6gre_info *ip6gre = link->l_info;
struct nlattr *data;
data = nla_nest_start(msg, IFLA_INFO_DATA);
if (!data)
return -NLE_MSGSIZE;
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_LINK)
NLA_PUT_U32(msg, IFLA_GRE_LINK, ip6gre->link);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_IFLAGS)
NLA_PUT_U16(msg, IFLA_GRE_IFLAGS, ip6gre->iflags);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_OFLAGS)
NLA_PUT_U16(msg, IFLA_GRE_OFLAGS, ip6gre->oflags);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_IKEY)
NLA_PUT_U32(msg, IFLA_GRE_IKEY, ip6gre->ikey);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_OKEY)
NLA_PUT_U32(msg, IFLA_GRE_OKEY, ip6gre->okey);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_LOCAL)
NLA_PUT(msg, IFLA_GRE_LOCAL, sizeof(struct in6_addr), &ip6gre->local);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_REMOTE)
NLA_PUT(msg, IFLA_GRE_REMOTE, sizeof(struct in6_addr), &ip6gre->remote);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_TTL)
NLA_PUT_U8(msg, IFLA_GRE_TTL, ip6gre->ttl);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_ENCAPLIMIT)
NLA_PUT_U8(msg, IFLA_GRE_ENCAP_LIMIT, ip6gre->encaplimit);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_FLOWINFO)
NLA_PUT_U32(msg, IFLA_GRE_FLOWINFO, ip6gre->flowinfo);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_FLAGS)
NLA_PUT_U32(msg, IFLA_GRE_FLAGS, ip6gre->flags);
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_FWMARK)
NLA_PUT_U32(msg, IFLA_GRE_FWMARK, ip6gre->fwmark);
nla_nest_end(msg, data);
nla_put_failure:
return 0;
}
static void ip6gre_free(struct rtnl_link *link)
{
struct ip6gre_info *ip6gre = link->l_info;
free(ip6gre);
link->l_info = NULL;
}
static void ip6gre_dump_line(struct rtnl_link *link, struct nl_dump_params *p)
{
nl_dump(p, "ip6gre : %s", link->l_name);
}
static void ip6gre_dump_details(struct rtnl_link *link, struct nl_dump_params *p)
{
struct ip6gre_info *ip6gre = link->l_info;
char *name;
char addr[INET6_ADDRSTRLEN];
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_LINK) {
nl_dump(p, " link ");
name = rtnl_link_get_name(link);
if (name)
nl_dump_line(p, "%s\n", name);
else
nl_dump_line(p, "%u\n", ip6gre->link);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_IFLAGS) {
nl_dump(p, " iflags ");
nl_dump_line(p, "%x\n", ip6gre->iflags);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_OFLAGS) {
nl_dump(p, " oflags ");
nl_dump_line(p, "%x\n", ip6gre->oflags);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_IKEY) {
nl_dump(p, " ikey ");
nl_dump_line(p, "%x\n",ip6gre->ikey);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_OKEY) {
nl_dump(p, " okey ");
nl_dump_line(p, "%x\n", ip6gre->okey);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_LOCAL) {
nl_dump(p, " local ");
nl_dump_line(p, "%s\n",
_nl_inet_ntop(AF_INET6, &ip6gre->local, addr));
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_REMOTE) {
nl_dump(p, " remote ");
nl_dump_line(p, "%s\n",
_nl_inet_ntop(AF_INET6, &ip6gre->remote, addr));
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_TTL) {
nl_dump(p, " ttl ");
nl_dump_line(p, "%u\n", ip6gre->ttl);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_ENCAPLIMIT) {
nl_dump(p, " encaplimit ");
nl_dump_line(p, "%u\n", ip6gre->encaplimit);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_FLOWINFO) {
nl_dump(p, " flowinfo ");
nl_dump_line(p, "%x\n", ip6gre->flowinfo);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_FLAGS) {
nl_dump(p, " flags ");
nl_dump_line(p, "%x\n", ip6gre->flags);
}
if (ip6gre->ip6gre_mask & IP6GRE_ATTR_FWMARK) {
nl_dump(p, " fwmark ");
nl_dump_line(p, "%x\n", ip6gre->fwmark);
}
}
static int ip6gre_clone(struct rtnl_link *dst, struct rtnl_link *src)
{
struct ip6gre_info *ip6gre_dst, *ip6gre_src = src->l_info;
int err;
dst->l_info = NULL;
err = rtnl_link_set_type(dst, "ip6gre");
if (err < 0)
return err;
ip6gre_dst = dst->l_info;
if (!ip6gre_dst || !ip6gre_src)
BUG();
memcpy(ip6gre_dst, ip6gre_src, sizeof(struct ip6gre_info));
return 0;
}
static struct rtnl_link_info_ops ip6gre_info_ops = {
.io_name = "ip6gre",
.io_alloc = ip6gre_alloc,
.io_parse = ip6gre_parse,
.io_dump = {
[NL_DUMP_LINE] = ip6gre_dump_line,
[NL_DUMP_DETAILS] = ip6gre_dump_details,
},
.io_clone = ip6gre_clone,
.io_put_attrs = ip6gre_put_attrs,
.io_free = ip6gre_free,
};
#define IS_IP6GRE_LINK_ASSERT(link) \
if ((link)->l_info_ops != &ip6gre_info_ops) { \
APPBUG("Link is not a ip6gre link. set type \"ip6gre\" first.");\
return -NLE_OPNOTSUPP; \
}
#define HAS_IP6GRE_ATTR_ASSERT(link,attr) \
if (!((link)->ip6gre_mask & (attr))) \
return -NLE_NOATTR;
struct rtnl_link *rtnl_link_ip6gre_alloc(void)
{
struct rtnl_link *link;
int err;
link = rtnl_link_alloc();
if (!link)
return NULL;
err = rtnl_link_set_type(link, "ip6gre");
if (err < 0) {
rtnl_link_put(link);
return NULL;
}
return link;
}
/**
* Check if link is a IP6GRE link
* @arg link Link object
*
* @return True if link is a IP6GRE link, otherwise 0 is returned.
*/
int rtnl_link_is_ip6gre(struct rtnl_link *link)
{
return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "ip6gre");
}
/**
* Create a new IP6GRE tunnel device
* @arg sock netlink socket
* @arg name name of the tunnel deviceL
*
* Creates a new ip6gre tunnel device in the kernel
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_add(struct nl_sock *sk, const char *name)
{
struct rtnl_link *link;
int err;
link = rtnl_link_ip6gre_alloc();
if (!link)
return -NLE_NOMEM;
if(name)
rtnl_link_set_name(link, name);
err = rtnl_link_add(sk, link, NLM_F_CREATE);
rtnl_link_put(link);
return err;
}
/**
* Set IP6GRE tunnel interface index
* @arg link Link object
* @arg index interface index
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_link(struct rtnl_link *link, uint32_t index)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->link = index;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_LINK;
return 0;
}
/**
* Get IP6GRE tunnel interface index
* @arg link Link object
* @arg index addr to fill in with the interface index
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_link(struct rtnl_link *link, uint32_t *index)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_LINK);
*index = ip6gre->link;
return 0;
}
/**
* Set IP6GRE tunnel set iflags
* @arg link Link object
* @arg iflags ip6gre iflags
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_iflags(struct rtnl_link *link, uint16_t iflags)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->iflags = iflags;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_IFLAGS;
return 0;
}
/**
* Get IP6GRE tunnel iflags
* @arg link Link object
* @arg iflags addr to fill in with the iflags
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_iflags(struct rtnl_link *link, uint16_t *iflags)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_IFLAGS);
*iflags = ip6gre->iflags;
return 0;
}
/**
* Set IP6GRE tunnel set oflags
* @arg link Link object
* @arg oflags ip6gre oflags
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_oflags(struct rtnl_link *link, uint16_t oflags)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->oflags = oflags;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_OFLAGS;
return 0;
}
/**
* Get IP6GRE tunnel oflags
* @arg link Link object
* @arg oflags addr to fill in with the oflags
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_oflags(struct rtnl_link *link, uint16_t *oflags)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_OFLAGS);
*oflags = ip6gre->oflags;
return 0;
}
/**
* Set IP6GRE tunnel set ikey
* @arg link Link object
* @arg ikey ip6gre ikey
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_ikey(struct rtnl_link *link, uint32_t ikey)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->ikey = ikey;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_IKEY;
return 0;
}
/**
* Get IP6GRE tunnel ikey
* @arg link Link object
* @arg ikey addr to fill in with the ikey
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_ikey(struct rtnl_link *link, uint32_t *ikey)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_IKEY);
*ikey = ip6gre->ikey;
return 0;
}
/**
* Set IP6GRE tunnel set okey
* @arg link Link object
* @arg okey ip6gre okey
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_okey(struct rtnl_link *link, uint32_t okey)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->okey = okey;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_OKEY;
return 0;
}
/**
* Get IP6GRE tunnel okey
* @arg link Link object
* @arg okey addr to fill in with the okey
*
* @return okey value
*/
int rtnl_link_ip6gre_get_okey(struct rtnl_link *link, uint32_t *okey)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_OKEY);
*okey = ip6gre->okey;
return 0;
}
/**
* Set IP6GRE tunnel local address
* @arg link Link object
* @arg local local address
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_local(struct rtnl_link *link, struct in6_addr *local)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
memcpy(&ip6gre->local, local, sizeof(struct in6_addr));
ip6gre->ip6gre_mask |= IP6GRE_ATTR_LOCAL;
return 0;
}
/**
* Get IP6GRE tunnel local address
* @arg link Link object
* @arg local addr to fill in with local address
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_local(struct rtnl_link *link, struct in6_addr *local)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_LOCAL);
memcpy(local, &ip6gre->local, sizeof(struct in6_addr));
return 0;
}
/**
* Set IP6GRE tunnel remote address
* @arg link Link object
* @arg remote remote address
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_remote(struct rtnl_link *link, struct in6_addr *remote)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
memcpy(&ip6gre->remote, remote, sizeof(struct in6_addr));
ip6gre->ip6gre_mask |= IP6GRE_ATTR_REMOTE;
return 0;
}
/**
* Get IP6GRE tunnel remote address
* @arg link Link object
* @arg remote addr to fill in with remote address
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_remote(struct rtnl_link *link, struct in6_addr *remote)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_REMOTE);
memcpy(remote, &ip6gre->remote, sizeof(struct in6_addr));
return 0;
}
/**
* Set IP6GRE tunnel ttl
* @arg link Link object
* @arg ttl tunnel ttl
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_ttl(struct rtnl_link *link, uint8_t ttl)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->ttl = ttl;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_TTL;
return 0;
}
/**
* Set IP6GRE tunnel ttl
* @arg link Link object
* @arg ttl addr to fill in with the ttl
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_ttl(struct rtnl_link *link, uint8_t *ttl)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_TTL);
*ttl = ip6gre->ttl;
return 0;
}
/**
* Set IP6GRE tunnel encap limit
* @arg link Link object
* @arg encaplimit tunnel encap limit value
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_encaplimit(struct rtnl_link *link, uint8_t encaplimit)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->encaplimit = encaplimit;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_ENCAPLIMIT;
return 0;
}
/**
* Get IP6GRE tunnel encap limit
* @arg link Link object
* @arg encaplimit addr to fill in with the encaplimit
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_encaplimit(struct rtnl_link *link, uint8_t *encaplimit)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_ENCAPLIMIT);
*encaplimit = ip6gre->encaplimit;
return 0;
}
/**
* Set IP6GRE tunnel flowinfo
* @arg link Link object
* @arg flowinfo flowinfo value
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_flowinfo(struct rtnl_link *link, uint32_t flowinfo)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->flowinfo = flowinfo;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_FLOWINFO;
return 0;
}
/**
* Get IP6GRE flowinfo
* @arg link Link object
* @arg flowinfo addr to fill in with the flowinfo
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_flowinfo(struct rtnl_link *link, uint32_t *flowinfo)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_FLOWINFO);
*flowinfo = ip6gre->flowinfo;
return 0;
}
/**
* Set IP6GRE tunnel flags
* @arg link Link object
* @arg flags tunnel flags
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_flags(struct rtnl_link *link, uint32_t flags)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->flags = flags;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_FLAGS;
return 0;
}
/**
* Get IP6GRE flags
* @arg link Link object
* @arg flags addr to fill in with the tunnel flags
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_flags(struct rtnl_link *link, uint32_t *flags)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_FLAGS);
*flags = ip6gre->flags;
return 0;
}
/**
* Set IP6GRE tunnel fwmark
* @arg link Link object
* @arg fwmark fwmark
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_set_fwmark(struct rtnl_link *link, uint32_t fwmark)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
ip6gre->fwmark = fwmark;
ip6gre->ip6gre_mask |= IP6GRE_ATTR_FWMARK;
return 0;
}
/**
* Get IP6GRE tunnel fwmark
* @arg link Link object
* @arg fwmark addr to fill in with the fwmark
*
* @return 0 on success or a negative error code
*/
int rtnl_link_ip6gre_get_fwmark(struct rtnl_link *link, uint32_t *fwmark)
{
struct ip6gre_info *ip6gre = link->l_info;
IS_IP6GRE_LINK_ASSERT(link);
HAS_IP6GRE_ATTR_ASSERT(ip6gre, IP6GRE_ATTR_FWMARK);
*fwmark = ip6gre->fwmark;
return 0;
}
static void __init ip6gre_init(void)
{
rtnl_link_register_info(&ip6gre_info_ops);
}
static void __exit ip6gre_exit(void)
{
rtnl_link_unregister_info(&ip6gre_info_ops);
}
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