[PATCH] introduce ip6 tunnel
Susant Sahani
susant at redhat.com
Sat May 17 23:42:23 PDT 2014
This patch adds support for ip6 tunnel works with
ip6_tunnel kernel module
Signed-off-by: Susant Sahani <susant at redhat.com>
---
doc/route.txt | 59 ++++
include/Makefile.am | 1 +
include/netlink/route/link/ip6tnl.h | 56 +++
lib/Makefile.am | 3 +-
lib/route/link/ip6tnl.c | 688 ++++++++++++++++++++++++++++++++++++
tests/.gitignore | 1 +
tests/Makefile.am | 1 +
tests/test-create-ip6tnl.c | 55 +++
8 files changed, 863 insertions(+), 1 deletion(-)
create mode 100644 include/netlink/route/link/ip6tnl.h
create mode 100644 lib/route/link/ip6tnl.c
create mode 100644 tests/test-create-ip6tnl.c
diff --git a/doc/route.txt b/doc/route.txt
index d87e79f..ca7fea4 100644
--- a/doc/route.txt
+++ b/doc/route.txt
@@ -1140,6 +1140,65 @@ if((err = rtnl_link_add(sk, link, NLM_F_CREATE)) < 0)
rtnl_link_put(link);
-----
+[[link_ip6tnl]]
+==== IP6TNL
+
+[source,c]
+-----
+extern struct rtnl_link *rtnl_link_ip6_tnl_alloc(void);
+extern int rtnl_link_ip6_tnl_add(struct nl_sock *sk, const char *name);
+
+extern int rtnl_link_ip6_tnl_set_link(struct rtnl_link *link, uint32_t index);
+extern uint32_t rtnl_link_ip6_tnl_get_link(struct rtnl_link *link);
+
+extern int rtnl_link_ip6_tnl_set_local(struct rtnl_link *link, struct in6_addr *);
+extern int rtnl_link_get_ip6_tnl_local(struct rtnl_link *link, struct in6_addr *);
+
+extern int rtnl_link_ip6_tnl_set_remote(struct rtnl_link *link, struct in6_addr *);
+extern int rtnl_link_ip6_tnl_get_remote(struct rtnl_link *link, struct in6_addr *);
+
+extern int rtnl_link_ip6_tnl_set_ttl(struct rtnl_link *link, uint8_t ttl);
+extern uint8_t rtnl_link_ip6_tnl_get_ttl(struct rtnl_link *link);
+
+extern int rtnl_link_ip6_tnl_set_tos(struct rtnl_link *link, uint8_t tos);
+extern uint8_t rtnl_link_ip6_tnl_get_tos(struct rtnl_link *link);
+
+extern int rtnl_link_ip6_tnl_set_encaplimit(struct rtnl_link *link, uint8_t encap_limit);
+extern uint8_t rtnl_link_ip6_tnl_get_encaplimit(struct rtnl_link *link);
+
+extern int rtnl_link_ip6_tnl_set_flags(struct rtnl_link *link, uint32_t flags);
+extern uint32_t rtnl_link_ip6_tnl_get_flags(struct rtnl_link *link);
+
+extern uint32_t rtnl_link_ip6_tnl_get_flowinfo(struct rtnl_link *link);
+extern int rtnl_link_ip6_tnl_set_flowinfo(struct rtnl_link *link, uint32_t flowinfo);
+
+extern int rtnl_link_ip6_tnl_set_proto(struct rtnl_link *link, uint8_t proto);
+extern uint8_t rtnl_link_ip6_tnl_get_proto(struct rtnl_link *link);
+
+-----
+
+.Example: Add a ip6tnl tunnel device
+[source,c]
+-----
+struct rtnl_link *link
+struct in6_addr addr
+
+link = rtnl_link_ip6_tnl_alloc();
+
+rtnl_link_set_name(link, "ip6tnl-tun");
+rtnl_link_ip6_tnl_set_link(link, if_index);
+
+inet_pton(AF_INET6, "2607:f0d0:1002:51::4", &addr);
+rtnl_link_ip6_tnl_set_local(link, &addr);
+
+inet_pton(AF_INET6, "2607:f0d0:1002:52::5", &addr);
+rtnl_link_ip6_tnl_set_remote(link, &addr);
+
+rtnl_link_add(sk, link, NLM_F_CREATE);
+rtnl_link_put(link);
+
+-----
+
== Neighbouring
diff --git a/include/Makefile.am b/include/Makefile.am
index 1db0597..4c66e8c 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -53,6 +53,7 @@ nobase_libnlinclude_HEADERS = \
netlink/route/link/vlan.h \
netlink/route/link/vxlan.h \
netlink/route/link/veth.h \
+ netlink/route/link/ip6tnl.h
netlink/route/link/ipgre.h \
netlink/route/link/ipip.h \
netlink/route/link/ipvti.h \
diff --git a/include/netlink/route/link/ip6tnl.h b/include/netlink/route/link/ip6tnl.h
new file mode 100644
index 0000000..142cee3
--- /dev/null
+++ b/include/netlink/route/link/ip6tnl.h
@@ -0,0 +1,56 @@
+/*
+ * netlink/route/link/ip6tnl.h IP6TNL interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2014 Susant Sahani <susant at redhat.com>
+ */
+
+#ifndef NETLINK_LINK_IP6TNL_H_
+#define NETLINK_LINK_IP6TNL_H_
+
+#include <netlink/netlink.h>
+#include <netlink/route/link.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ extern struct rtnl_link *rtnl_link_ip6_tnl_alloc(void);
+ extern int rtnl_link_ip6_tnl_add(struct nl_sock *sk, const char *name);
+
+ extern int rtnl_link_ip6_tnl_set_link(struct rtnl_link *link, uint32_t index);
+ extern uint32_t rtnl_link_ip6_tnl_get_link(struct rtnl_link *link);
+
+ extern int rtnl_link_ip6_tnl_set_local(struct rtnl_link *link, struct in6_addr *);
+ extern int rtnl_link_get_ip6_tnl_local(struct rtnl_link *link, struct in6_addr *);
+
+ extern int rtnl_link_ip6_tnl_set_remote(struct rtnl_link *link, struct in6_addr *);
+ extern int rtnl_link_ip6_tnl_get_remote(struct rtnl_link *link, struct in6_addr *);
+
+ extern int rtnl_link_ip6_tnl_set_ttl(struct rtnl_link *link, uint8_t ttl);
+ extern uint8_t rtnl_link_ip6_tnl_get_ttl(struct rtnl_link *link);
+
+ extern int rtnl_link_ip6_tnl_set_tos(struct rtnl_link *link, uint8_t tos);
+ extern uint8_t rtnl_link_ip6_tnl_get_tos(struct rtnl_link *link);
+
+ extern int rtnl_link_ip6_tnl_set_encaplimit(struct rtnl_link *link, uint8_t encap_limit);
+ extern uint8_t rtnl_link_ip6_tnl_get_encaplimit(struct rtnl_link *link);
+
+ extern int rtnl_link_ip6_tnl_set_flags(struct rtnl_link *link, uint32_t flags);
+ extern uint32_t rtnl_link_ip6_tnl_get_flags(struct rtnl_link *link);
+
+ extern uint32_t rtnl_link_ip6_tnl_get_flowinfo(struct rtnl_link *link);
+ extern int rtnl_link_ip6_tnl_set_flowinfo(struct rtnl_link *link, uint32_t flowinfo);
+
+ extern int rtnl_link_ip6_tnl_set_proto(struct rtnl_link *link, uint8_t proto);
+ extern uint8_t rtnl_link_ip6_tnl_get_proto(struct rtnl_link *link);
+
+#ifdef _cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/Makefile.am b/lib/Makefile.am
index b2d142c..b6b216e 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -79,7 +79,8 @@ libnl_route_3_la_SOURCES = \
route/link/bridge.c route/link/inet6.c route/link/inet.c \
route/link/bonding.c route/link/can.c route/link/macvlan.c \
route/link/vxlan.c route/link/veth.c route/link/ipip.c \
- route/link/ipgre.c route/link/sit.c route/link/ipvti.c\
+ route/link/ipgre.c route/link/sit.c route/link/ipvti.c \
+ route/link/ip6tnl.c \
\
route/qdisc/blackhole.c route/qdisc/cbq.c route/qdisc/dsmark.c \
route/qdisc/fifo.c route/qdisc/htb.c route/qdisc/netem.c \
diff --git a/lib/route/link/ip6tnl.c b/lib/route/link/ip6tnl.c
new file mode 100644
index 0000000..6d8b2f8
--- /dev/null
+++ b/lib/route/link/ip6tnl.c
@@ -0,0 +1,688 @@
+/*
+ * lib/route/link/ip6tnl.c IP6TNL Link Info
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2014 Susant Sahani <susant at redhat.com>
+ */
+
+/**
+ * @ingroup link
+ * @defgroup ip6tnl IP6TNL
+ * ip6tnl link module
+ *
+ * @details
+ * \b Link Type Name: "ip6tnl"
+ *
+ * @route_doc{link_ip6tnl, IP6TNL 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-private/route/link/api.h>
+#include <linux/if_tunnel.h>
+#include <linux/in6.h>
+
+#define IP6_TNL_ATTR_LINK (1 << 0)
+#define IP6_TNL_ATTR_LOCAL (1 << 1)
+#define IP6_TNL_ATTR_REMOTE (1 << 2)
+#define IP6_TNL_ATTR_TTL (1 << 3)
+#define IP6_TNL_ATTR_TOS (1 << 4)
+#define IP6_TNL_ATTR_ENCAPLIMIT (1 << 5)
+#define IP6_TNL_ATTR_FLAGS (1 << 6)
+#define IP6_TNL_ATTR_PROTO (1 << 7)
+#define IP6_TNL_ATTR_FLOWINFO (1 << 8)
+
+struct ip6_tnl_info
+{
+ uint8_t ttl;
+ uint8_t tos;
+ uint8_t encap_limit;
+ uint8_t proto;
+ uint32_t flags;
+ uint32_t link;
+ uint32_t flowinfo;
+ struct in6_addr local;
+ struct in6_addr remote;
+ uint32_t ip6_tnl_mask;
+};
+
+static struct nla_policy ip6_tnl_policy[IFLA_IPTUN_MAX + 1] = {
+ [IFLA_IPTUN_LINK] = { .type = NLA_U32 },
+ [IFLA_IPTUN_LOCAL] = { .minlen = sizeof(struct in6_addr) },
+ [IFLA_IPTUN_REMOTE] = { .minlen = sizeof(struct in6_addr) },
+ [IFLA_IPTUN_TTL] = { .type = NLA_U8 },
+ [IFLA_IPTUN_TOS] = { .type = NLA_U8 },
+ [IFLA_IPTUN_ENCAP_LIMIT] = { .type = NLA_U8 },
+ [IFLA_IPTUN_FLOWINFO] = { .type = NLA_U32 },
+ [IFLA_IPTUN_FLAGS] = { .type = NLA_U32 },
+ [IFLA_IPTUN_PROTO] = { .type = NLA_U8 },
+};
+
+static int ip6_tnl_alloc(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl;
+
+ ip6_tnl = calloc(1, sizeof(*ip6_tnl));
+ if (!ip6_tnl)
+ return -NLE_NOMEM;
+
+ link->l_info = ip6_tnl;
+
+ return 0;
+}
+
+static int ip6_tnl_parse(struct rtnl_link *link, struct nlattr *data,
+ struct nlattr *xstats)
+{
+ struct nlattr *tb[IFLA_IPTUN_MAX + 1];
+ struct ip6_tnl_info *ip6_tnl;
+ int err;
+
+ NL_DBG(3, "Parsing IP6_TNL link info");
+
+ err = nla_parse_nested(tb, IFLA_IPTUN_MAX, data, ip6_tnl_policy);
+ if (err < 0)
+ goto errout;
+
+ err = ip6_tnl_alloc(link);
+ if (err < 0)
+ goto errout;
+
+ ip6_tnl = link->l_info;
+
+ if (tb[IFLA_IPTUN_LINK]) {
+ ip6_tnl->link = nla_get_u32(tb[IFLA_IPTUN_LINK]);
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_LINK;
+ }
+
+ if (tb[IFLA_IPTUN_LOCAL]) {
+ nla_memcpy(&ip6_tnl->local, tb[IFLA_IPTUN_LOCAL], sizeof(struct in6_addr));
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_LOCAL;
+ }
+
+ if (tb[IFLA_IPTUN_REMOTE]) {
+ nla_memcpy(&ip6_tnl->remote, tb[IFLA_IPTUN_REMOTE], sizeof(struct in6_addr));
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_REMOTE;
+ }
+
+ if (tb[IFLA_IPTUN_TTL]) {
+ ip6_tnl->ttl = nla_get_u8(tb[IFLA_IPTUN_TTL]);
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_TTL;
+ }
+
+ if (tb[IFLA_IPTUN_TOS]) {
+ ip6_tnl->tos = nla_get_u8(tb[IFLA_IPTUN_TOS]);
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_TOS;
+ }
+
+ if (tb[IFLA_IPTUN_ENCAP_LIMIT]) {
+ ip6_tnl->encap_limit = nla_get_u8(tb[IFLA_IPTUN_ENCAP_LIMIT]);
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_ENCAPLIMIT;
+ }
+
+ if (tb[IFLA_IPTUN_FLAGS]) {
+ ip6_tnl->flags = nla_get_u32(tb[IFLA_IPTUN_FLAGS]);
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_FLAGS;
+ }
+
+ if (tb[IFLA_IPTUN_FLOWINFO]) {
+ ip6_tnl->flowinfo = nla_get_u32(tb[IFLA_IPTUN_FLOWINFO]);
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_FLOWINFO;
+ }
+
+ if (tb[IFLA_IPTUN_PROTO]) {
+ ip6_tnl->proto = nla_get_u8(tb[IFLA_IPTUN_PROTO]);
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_PROTO;
+ }
+
+ err = 0;
+
+errout:
+ return err;
+}
+
+static int ip6_tnl_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+ struct nlattr *data;
+
+ data = nla_nest_start(msg, IFLA_INFO_DATA);
+ if (!data)
+ return -NLE_MSGSIZE;
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_LINK)
+ NLA_PUT_U32(msg, IFLA_IPTUN_LINK, ip6_tnl->link);
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_LOCAL)
+ NLA_PUT(msg, IFLA_IPTUN_LOCAL, sizeof(struct in6_addr), &ip6_tnl->local);
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_REMOTE)
+ NLA_PUT(msg, IFLA_IPTUN_REMOTE, sizeof(struct in6_addr), &ip6_tnl->remote);
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_TTL)
+ NLA_PUT_U8(msg, IFLA_IPTUN_TTL, ip6_tnl->ttl);
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_TOS)
+ NLA_PUT_U8(msg, IFLA_IPTUN_TOS, ip6_tnl->tos);
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_ENCAPLIMIT)
+ NLA_PUT_U8(msg, IFLA_IPTUN_ENCAP_LIMIT, ip6_tnl->encap_limit);
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_FLAGS)
+ NLA_PUT_U32(msg, IFLA_IPTUN_FLAGS, ip6_tnl->flags);
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_FLOWINFO)
+ NLA_PUT_U32(msg, IFLA_IPTUN_FLOWINFO, ip6_tnl->flowinfo);
+
+ /* kernel crashes if this attribure is missing temporary fix */
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_PROTO)
+ NLA_PUT_U8(msg, IFLA_IPTUN_PROTO, ip6_tnl->proto);
+ else
+ NLA_PUT_U8(msg, IFLA_IPTUN_PROTO, 0);
+
+ nla_nest_end(msg, data);
+
+nla_put_failure:
+ return 0;
+}
+
+static void ip6_tnl_free(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ free(ip6_tnl);
+ link->l_info = NULL;
+}
+
+static void ip6_tnl_dump_line(struct rtnl_link *link, struct nl_dump_params *p)
+{
+ nl_dump(p, "ip6_tnl : %s", link->l_name);
+}
+
+static void ip6_tnl_dump_details(struct rtnl_link *link, struct nl_dump_params *p)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+ char *name, addr[INET6_ADDRSTRLEN];
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_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", ip6_tnl->link);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_LOCAL) {
+ nl_dump(p, " local ");
+
+ if(inet_ntop(AF_INET6, &ip6_tnl->local, addr, INET6_ADDRSTRLEN))
+ nl_dump_line(p, "%s\n", addr);
+ else
+ nl_dump_line(p, "%#x\n", ip6_tnl->local);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_REMOTE) {
+ nl_dump(p, " remote ");
+
+ if(inet_ntop(AF_INET6, &ip6_tnl->remote, addr, INET6_ADDRSTRLEN))
+ nl_dump_line(p, "%s\n", addr);
+ else
+ nl_dump_line(p, "%#x\n", ip6_tnl->remote);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_TTL) {
+ nl_dump(p, " ttl ");
+ nl_dump_line(p, "%d\n", ip6_tnl->ttl);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_TOS) {
+ nl_dump(p, " tos ");
+ nl_dump_line(p, "%d\n", ip6_tnl->tos);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_ENCAPLIMIT) {
+ nl_dump(p, " encaplimit ");
+ nl_dump_line(p, "%d\n", ip6_tnl->encap_limit);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_FLAGS) {
+ nl_dump(p, " flags ");
+ nl_dump_line(p, " (%x)\n", ip6_tnl->flags);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_FLOWINFO) {
+ nl_dump(p, " flowinfo ");
+ nl_dump_line(p, " (%x)\n", ip6_tnl->flowinfo);
+ }
+
+ if (ip6_tnl->ip6_tnl_mask & IP6_TNL_ATTR_PROTO) {
+ nl_dump(p, " proto ");
+ nl_dump_line(p, " (%x)\n", ip6_tnl->proto);
+ }
+}
+
+static int ip6_tnl_clone(struct rtnl_link *dst, struct rtnl_link *src)
+{
+ struct ip6_tnl_info *ip6_tnl_dst, *ip6_tnl_src = src->l_info;
+ int err;
+
+ dst->l_info = NULL;
+
+ err = rtnl_link_set_type(dst, "ip6tnl");
+ if (err < 0)
+ return err;
+
+ ip6_tnl_dst = dst->l_info;
+
+ if (!ip6_tnl_dst || !ip6_tnl_src)
+ BUG();
+
+ memcpy(ip6_tnl_dst, ip6_tnl_src, sizeof(struct ip6_tnl_info));
+
+ return 0;
+}
+
+static struct rtnl_link_info_ops ip6_tnl_info_ops = {
+ .io_name = "ip6tnl",
+ .io_alloc = ip6_tnl_alloc,
+ .io_parse = ip6_tnl_parse,
+ .io_dump = {
+ [NL_DUMP_LINE] = ip6_tnl_dump_line,
+ [NL_DUMP_DETAILS] = ip6_tnl_dump_details,
+ },
+ .io_clone = ip6_tnl_clone,
+ .io_put_attrs = ip6_tnl_put_attrs,
+ .io_free = ip6_tnl_free,
+};
+
+#define IS_IP6_TNL_LINK_ASSERT(link)\
+ if ((link)->l_info_ops != &ip6_tnl_info_ops) {\
+ APPBUG("Link is not a ip6_tnl link. set type \"ip6tnl\" first.");\
+ return -NLE_OPNOTSUPP;\
+ }
+
+struct rtnl_link *rtnl_link_ip6_tnl_alloc(void)
+{
+ struct rtnl_link *link;
+ int err;
+
+ link = rtnl_link_alloc();
+ if (!link)
+ return NULL;
+
+ err = rtnl_link_set_type(link, "ip6tnl");
+ if (err < 0) {
+ rtnl_link_put(link);
+ return NULL;
+ }
+
+ return link;
+}
+
+/**
+ * Check if link is a IP6_TNL link
+ * @arg link Link object
+ *
+ * @return True if link is a IP6_TNL link, otherwise false is returned.
+ */
+int rtnl_link_is_ip6_tnl(struct rtnl_link *link)
+{
+ return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "ip6tnl");
+}
+
+/**
+ * Create a new ip6_tnl tunnel device
+ * @arg sock netlink socket
+ * @arg name name of the tunnel device
+ *
+ * Creates a new ip6_tnl tunnel device in the kernel
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_add(struct nl_sock *sk, const char *name)
+{
+ struct rtnl_link *link;
+ int err;
+
+ link = rtnl_link_ip6_tnl_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 IP6_TNL tunnel interface index
+ * @arg link Link object
+ * @arg index interface index
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_link(struct rtnl_link *link, uint32_t index)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ ip6_tnl->link = index;
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_LINK;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL tunnel interface index
+ * @arg link Link object
+ *
+ * @return interface index value
+ */
+uint32_t rtnl_link_ip6_tnl_get_link(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ return ip6_tnl->link;
+}
+
+/**
+ * Set IP6_TNL tunnel local address
+ * @arg link Link object
+ * @arg addr local address
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_local(struct rtnl_link *link, struct in6_addr *addr)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ memcpy(&ip6_tnl->local, addr, sizeof(struct in6_addr));
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_LOCAL;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL tunnel local address
+ * @arg link Link object
+ *
+ * @return local address value
+ */
+int rtnl_link_ip6_tnl_get_local(struct rtnl_link *link, struct in6_addr *addr)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ memcpy(addr, &ip6_tnl->local, sizeof(struct in6_addr));
+
+ return 0;
+}
+
+/**
+ * Set IP6_TNL tunnel remote address
+ * @arg link Link object
+ * @arg remote remote address
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_remote(struct rtnl_link *link, struct in6_addr *addr)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ memcpy(&ip6_tnl->remote, addr, sizeof(struct in6_addr));
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_REMOTE;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL tunnel remote address
+ * @arg link Link object
+ *
+ * @return remote address
+ */
+int rtnl_link_ip6_tnl_get_remote(struct rtnl_link *link, struct in6_addr *addr)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ memcpy(addr, &ip6_tnl->remote, sizeof(struct in6_addr));
+
+ return 0;
+}
+
+/**
+ * Set IP6_TNL tunnel ttl
+ * @arg link Link object
+ * @arg ttl tunnel ttl
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_ttl(struct rtnl_link *link, uint8_t ttl)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ ip6_tnl->ttl = ttl;
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_TTL;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL tunnel ttl
+ * @arg link Link object
+ *
+ * @return ttl value
+ */
+uint8_t rtnl_link_ip6_tnl_get_ttl(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ return ip6_tnl->ttl;
+}
+
+/**
+ * Set IP6_TNL tunnel tos
+ * @arg link Link object
+ * @arg tos tunnel tos
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_tos(struct rtnl_link *link, uint8_t tos)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ ip6_tnl->tos = tos;
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_TOS;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL tunnel tos
+ * @arg link Link object
+ *
+ * @return tos value
+ */
+uint8_t rtnl_link_ip6_tnl_get_tos(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ return ip6_tnl->tos;
+}
+
+/**
+ * Set IP6_TNL tunnel path MTU discovery
+ * @arg link Link object
+ * @arg encap_limit encaplimit value
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_encaplimit(struct rtnl_link *link, uint8_t encap_limit)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ ip6_tnl->encap_limit = encap_limit;
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_ENCAPLIMIT;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL encaplimit
+ * @arg link Link object
+ *
+ * @return encaplimit value
+ */
+uint8_t rtnl_link_ip6_tnl_get_encaplimit(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ return ip6_tnl->encap_limit;
+}
+
+/**
+ * Set IP6_TNL tunnel flowinfo
+ * @arg link Link object
+ * @arg flowinfo flowinfo value
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_flowinfo(struct rtnl_link *link, uint32_t flowinfo)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ ip6_tnl->flowinfo = flowinfo;
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_FLOWINFO;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL flowinfo
+ * @arg link Link object
+ *
+ * @return flowinfo value
+ */
+uint32_t rtnl_link_ip6_tnl_get_flowinfo(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ return ip6_tnl->flowinfo;
+}
+
+/**
+ * Set IP6_TNL tunnel flags
+ * @arg link Link object
+ * @arg flags tunnel flags
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_flags(struct rtnl_link *link, uint32_t flags)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ ip6_tnl->flags = flags;
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_FLAGS;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL path flags
+ * @arg link Link object
+ *
+ * @return flags value
+ */
+uint32_t rtnl_link_ip6_tnl_get_flags(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ return ip6_tnl->flags;
+}
+
+/**
+ * Set IP6_TNL tunnel proto
+ * @arg link Link object
+ * @arg proto tunnel proto
+ *
+ * @return 0 on success or a negative error code
+ */
+int rtnl_link_ip6_tnl_set_proto(struct rtnl_link *link, uint8_t proto)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ ip6_tnl->proto = proto;
+ ip6_tnl->ip6_tnl_mask |= IP6_TNL_ATTR_PROTO;
+
+ return 0;
+}
+
+/**
+ * Get IP6_TNL proto
+ * @arg link Link object
+ *
+ * @return proto value
+ */
+uint8_t rtnl_link_ip6_tnl_get_proto(struct rtnl_link *link)
+{
+ struct ip6_tnl_info *ip6_tnl = link->l_info;
+
+ IS_IP6_TNL_LINK_ASSERT(link);
+
+ return ip6_tnl->proto;
+}
+
+static void __init ip6_tnl_init(void)
+{
+ rtnl_link_register_info(&ip6_tnl_info_ops);
+}
+
+static void __exit ip6_tnl_exit(void)
+{
+ rtnl_link_unregister_info(&ip6_tnl_info_ops);
+}
diff --git a/tests/.gitignore b/tests/.gitignore
index d9cee77..6b77cac 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -7,6 +7,7 @@
/test-complex-HTB-with-hash-filters
/test-create-bond
/test-create-bridge
+/test-create-ip6tnl
/test-create-ipgre
/test-create-ipip
/test-create-ipvti
diff --git a/tests/Makefile.am b/tests/Makefile.am
index acc4f93..255033d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -24,6 +24,7 @@ check_PROGRAMS = \
test-create-vxlan \
test-create-veth \
test-create-bridge \
+ test-create-ip6tnl \
test-create-ipgre \
test-create-ipip \
test-create-ipvti \
diff --git a/tests/test-create-ip6tnl.c b/tests/test-create-ip6tnl.c
new file mode 100644
index 0000000..b36ab3d
--- /dev/null
+++ b/tests/test-create-ip6tnl.c
@@ -0,0 +1,55 @@
+#include <netlink/route/link/ip6tnl.h>
+#include <netlink-private/netlink.h>
+
+int main(int argc, char *argv[])
+{
+ struct nl_cache *link_cache;
+ struct rtnl_link *link;
+ struct in6_addr addr;
+ struct nl_sock *sk;
+ int err, if_index;
+
+ sk = nl_socket_alloc();
+ if ((err = nl_connect(sk, NETLINK_ROUTE)) < 0) {
+ nl_perror(err, "Unable to connect socket");
+ return err;
+ }
+
+ err = rtnl_link_alloc_cache(sk, AF_UNSPEC, &link_cache);
+ if ( err < 0) {
+ nl_perror(err, "Unable to allocate cache");
+ return err;
+ }
+
+ if_index = rtnl_link_name2i(link_cache, "ens33");
+ if (!if_index) {
+ fprintf(stderr, "Unable to lookup ens33");
+ return -1;
+ }
+
+ link = rtnl_link_ip6_tnl_alloc();
+ if(!link) {
+ nl_perror(err, "Unable to allocate link");
+ return -1;
+
+ }
+ rtnl_link_set_name(link, "ip6tnl-tun");
+ rtnl_link_ip6_tnl_set_link(link, if_index);
+
+ inet_pton(AF_INET6, "2607:f0d0:1002:51::4", &addr);
+ rtnl_link_ip6_tnl_set_local(link, &addr);
+
+ inet_pton(AF_INET6, "2607:f0d0:1002:52::5", &addr);
+ rtnl_link_ip6_tnl_set_remote(link, &addr);
+
+ err = rtnl_link_add(sk, link, NLM_F_CREATE);
+ if (err < 0) {
+ nl_perror(err, "Unable to add link");
+ return err;
+ }
+
+ rtnl_link_put(link);
+ nl_close(sk);
+
+ return 0;
+}
--
1.9.0
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