From 11f9cc0914aef697c1f49bca7353117cb65fd318 Mon Sep 17 00:00:00 2001 From: Susant Sahani Date: Sat, 10 May 2014 10:18:12 +0530 Subject: [PATCH] ip6tnl: introduce ip6 tunnel support This patch adds support for ip6 tunnel that works with the ip6_tunnel kernel module. Signed-off-by: Susant Sahani Signed-off-by: Thomas Haller --- 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 d87e79fcc..d9f88e134 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_ip6_tnl_get_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 1db059798..4c66e8c0a 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 000000000..7e0c29585 --- /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 + */ + +#ifndef NETLINK_LINK_IP6TNL_H_ +#define NETLINK_LINK_IP6TNL_H_ + +#include +#include + +#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_ip6_tnl_get_local(struct rtnl_link *link, struct in6_addr *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 1aae6fe41..1ae37a934 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 000000000..ed79e827c --- /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 + */ + +/** + * @ingroup link + * @defgroup ip6tnl IP6TNL + * ip6tnl link module + * + * @details + * \b Link Type Name: "ip6tnl" + * + * @route_doc{link_ip6tnl, IP6TNL Documentation} + * + * @{ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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 0 on success or a negative error code + */ +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 0 on success or a negative error code + */ +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 encap limit + * @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 d9cee77a7..6b77cacce 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 acc4f9390..255033d7b 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 000000000..b36ab3d3f --- /dev/null +++ b/tests/test-create-ip6tnl.c @@ -0,0 +1,55 @@ +#include +#include + +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; +}