diff options
| -rw-r--r-- | doc/route.txt | 79 | ||||
| -rw-r--r-- | include/Makefile.am | 1 | ||||
| -rw-r--r-- | include/netlink/route/link/ipgre.h | 59 | ||||
| -rw-r--r-- | lib/Makefile.am | 1 | ||||
| -rw-r--r-- | lib/route/link/ipgre.c | 727 | ||||
| -rw-r--r-- | tests/.gitignore | 1 | ||||
| -rw-r--r-- | tests/Makefile.am | 1 | ||||
| -rw-r--r-- | tests/test-create-ipgre.c | 56 |
8 files changed, 925 insertions, 0 deletions
diff --git a/doc/route.txt b/doc/route.txt index e5f06f75..746201a3 100644 --- a/doc/route.txt +++ b/doc/route.txt @@ -924,6 +924,85 @@ if((err = rtnl_link_add(sk, link, NLM_F_CREATE)) < 0) rtnl_link_put(link); ----- +[[link_ipgre]] +==== IPGRE + +[source,c] +----- +extern struct rtnl_link *rtnl_link_ipgre_alloc(void); +extern int rtnl_link_ipgre_add(struct nl_sock *sk, const char *name); + +extern int rtnl_link_ipgre_set_link(struct rtnl_link *link, uint32_t index); +extern uint32_t rtnl_link_ipgre_get_link(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_iflags(struct rtnl_link *link, uint16_t iflags); +extern uint16_t rtnl_link_get_iflags(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_oflags(struct rtnl_link *link, uint16_t oflags); +extern uint16_t rtnl_link_get_oflags(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_ikey(struct rtnl_link *link, uint32_t ikey); +extern uint32_t rtnl_link_get_ikey(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_okey(struct rtnl_link *link, uint32_t okey); +extern uint32_t rtnl_link_get_okey(struct rtnl_link *link) + +extern int rtnl_link_ipgre_set_local(struct rtnl_link *link, uint32_t addr); +extern uint32_t rtnl_link_ipgre_get_local(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_remote(struct rtnl_link *link, uint32_t addr); +extern uint32_t rtnl_link_ipgre_get_remote(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_ttl(struct rtnl_link *link, uint8_t ttl); +extern uint8_t rtnl_link_ipgre_get_ttl(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_tos(struct rtnl_link *link, uint8_t tos); +extern uint8_t rtnl_link_ipgre_get_tos(struct rtnl_link *link); + +extern int rtnl_link_ipgre_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc); +extern uint8_t rtnl_link_ipgre_get_pmtudisc(struct rtnl_link *link); + +----- + +.Example: Add a ipgre tunnel device +[source,c] +----- +struct rtnl_link *link +struct in_addr addr + +/* allocate new link object of type vxlan */ +if(!(link = rtnl_link_ipgre_alloc())) + /* error */ + +/* set ipgre tunnel name */ +if ((err = rtnl_link_set_name(link, "ipgre-tun")) < 0) + /* error */ + +/* set link index */ +if ((err = rtnl_link_ipgre_set_link(link, if_index)) < 0) + /* error */ + +/* set local address */ +inet_pton(AF_INET, "192.168.254.12", &addr.s_addr); +if ((err = rtnl_link_ipgre_set_local(link, addr.s_addr)) < 0) + /* error */ + +/* set remote address */ +inet_pton(AF_INET, "192.168.254.13", &addr.s_addr +if ((err = rtnl_link_ipgre_set_remote(link, addr.s_addr)) < 0) + /* error */ + +/* set tunnel ttl */ +if ((err = rtnl_link_ipgre_set_ttl(link, 64)) < 0) + /* error */ + +if((err = rtnl_link_add(sk, link, NLM_F_CREATE)) < 0) + /* error */ + +rtnl_link_put(link); +----- + + == Neighbouring == Routing diff --git a/include/Makefile.am b/include/Makefile.am index 39b014b1..eb205f75 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/ipgre.h \ netlink/route/link/ipip.h \ netlink/route/qdisc/cbq.h \ netlink/route/qdisc/dsmark.h \ diff --git a/include/netlink/route/link/ipgre.h b/include/netlink/route/link/ipgre.h new file mode 100644 index 00000000..64154009 --- /dev/null +++ b/include/netlink/route/link/ipgre.h @@ -0,0 +1,59 @@ +/* + * netlink/route/link/ip_gre.h IPIP 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@redhat.com> + */ + +#ifndef NETLINK_LINK_IPGRE_H_ +#define NETLINK_LINK_IPGRE_H_ + +#include <netlink/netlink.h> +#include <netlink/route/link.h> + +#ifdef __cplusplus +extern "C" { +#endif + + extern struct rtnl_link *rtnl_link_ipgre_alloc(void); + extern int rtnl_link_ipgre_add(struct nl_sock *sk, const char *name); + + extern int rtnl_link_ipgre_set_link(struct rtnl_link *link, uint32_t index); + extern uint32_t rtnl_link_ipgre_get_link(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_iflags(struct rtnl_link *link, uint16_t iflags); + extern uint16_t rtnl_link_get_iflags(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_oflags(struct rtnl_link *link, uint16_t oflags); + extern uint16_t rtnl_link_get_oflags(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_ikey(struct rtnl_link *link, uint32_t ikey); + extern uint32_t rtnl_link_get_ikey(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_okey(struct rtnl_link *link, uint32_t okey); + extern uint32_t rtnl_link_get_okey(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_local(struct rtnl_link *link, uint32_t addr); + extern uint32_t rtnl_link_get_local(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_remote(struct rtnl_link *link, uint32_t addr); + extern uint32_t rtnl_link_get_remote(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_ttl(struct rtnl_link *link, uint8_t ttl); + extern uint8_t rtnl_link_get_ttl(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_tos(struct rtnl_link *link, uint8_t tos); + extern uint8_t rtnl_link_get_tos(struct rtnl_link *link); + + extern int rtnl_link_ipgre_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc); + extern uint8_t rtnl_link_get_pmtudisc(struct rtnl_link *link); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/Makefile.am b/lib/Makefile.am index e3748bbf..92ba0c67 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -79,6 +79,7 @@ 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/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/ipgre.c b/lib/route/link/ipgre.c new file mode 100644 index 00000000..df9d65db --- /dev/null +++ b/lib/route/link/ipgre.c @@ -0,0 +1,727 @@ +/* + * lib/route/link/ipgre.c IPGRE 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@redhat.com> + */ + +/** + * @ingroup link + * @defgroup ipgre IPGRE + * ipgre link module + * + * @details + * \b Link Type Name: "ipgre" + * + * @route_doc{link_ipgre, IPGRE 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> + +#define IPGRE_ATTR_LINK (1 << 0) +#define IPGRE_ATTR_IFLAGS (1 << 1) +#define IPGRE_ATTR_OFLAGS (1 << 2) +#define IPGRE_ATTR_IKEY (1 << 3) +#define IPGRE_ATTR_OKEY (1 << 4) +#define IPGRE_ATTR_LOCAL (1 << 5) +#define IPGRE_ATTR_REMOTE (1 << 6) +#define IPGRE_ATTR_TTL (1 << 7) +#define IPGRE_ATTR_TOS (1 << 8) +#define IPGRE_ATTR_PMTUDISC (1 << 9) + +struct ipgre_info +{ + uint8_t ttl; + uint8_t tos; + uint8_t pmtudisc; + uint16_t iflags; + uint16_t oflags; + uint32_t ikey; + uint32_t okey; + uint32_t link; + uint32_t local; + uint32_t remote; + uint32_t ipgre_mask; +}; + +static struct nla_policy ipgre_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] = { .type = NLA_U32 }, + [IFLA_GRE_REMOTE] = { .type = NLA_U32 }, + [IFLA_GRE_TTL] = { .type = NLA_U8 }, + [IFLA_GRE_TOS] = { .type = NLA_U8 }, + [IFLA_GRE_PMTUDISC] = { .type = NLA_U8 }, +}; + +static int ipgre_alloc(struct rtnl_link *link) +{ + struct ipgre_info *ipgre; + + ipgre = calloc(1, sizeof(*ipgre)); + if (!ipgre) + return -NLE_NOMEM; + + link->l_info = ipgre; + + return 0; +} + +static int ipgre_parse(struct rtnl_link *link, struct nlattr *data, + struct nlattr *xstats) +{ + struct nlattr *tb[IFLA_IPTUN_MAX + 1]; + struct ipgre_info *ipgre; + int err; + + NL_DBG(3, "Parsing IPGRE link info"); + + err = nla_parse_nested(tb, IFLA_GRE_MAX, data, ipgre_policy); + if (err < 0) + goto errout; + + err = ipgre_alloc(link); + if (err < 0) + goto errout; + + ipgre = link->l_info; + + if (tb[IFLA_GRE_LINK]) { + ipgre->link = nla_get_u32(tb[IFLA_GRE_LINK]); + ipgre->ipgre_mask |= IPGRE_ATTR_LINK; + } + + if (tb[IFLA_GRE_IFLAGS]) { + ipgre->iflags = nla_get_u16(tb[IFLA_GRE_IFLAGS]); + ipgre->ipgre_mask |= IPGRE_ATTR_IFLAGS; + } + + if (tb[IFLA_GRE_OFLAGS]) { + ipgre->oflags = nla_get_u16(tb[IFLA_GRE_OFLAGS]); + ipgre->ipgre_mask |= IPGRE_ATTR_OFLAGS; + } + + if (tb[IFLA_GRE_IKEY]) { + ipgre->ikey = nla_get_u32(tb[IFLA_GRE_IKEY]); + ipgre->ipgre_mask |= IPGRE_ATTR_IKEY; + } + + if (tb[IFLA_GRE_OKEY]) { + ipgre->okey = nla_get_u32(tb[IFLA_GRE_OKEY]); + ipgre->ipgre_mask |= IPGRE_ATTR_OKEY; + } + + if (tb[IFLA_GRE_LOCAL]) { + ipgre->local = nla_get_u32(tb[IFLA_GRE_LOCAL]); + ipgre->ipgre_mask |= IPGRE_ATTR_LOCAL; + } + + if (tb[IFLA_GRE_LOCAL]) { + ipgre->remote = nla_get_u32(tb[IFLA_GRE_LOCAL]); + ipgre->ipgre_mask |= IPGRE_ATTR_REMOTE; + } + + if (tb[IFLA_GRE_TTL]) { + ipgre->ttl = nla_get_u8(tb[IFLA_GRE_TTL]); + ipgre->ipgre_mask |= IPGRE_ATTR_TTL; + } + + if (tb[IFLA_GRE_TOS]) { + ipgre->tos = nla_get_u8(tb[IFLA_GRE_TOS]); + ipgre->ipgre_mask |= IPGRE_ATTR_TOS; + } + + if (tb[IFLA_GRE_PMTUDISC]) { + ipgre->pmtudisc = nla_get_u8(tb[IFLA_GRE_PMTUDISC]); + ipgre->ipgre_mask |= IPGRE_ATTR_PMTUDISC; + } + + err = 0; + + errout: + return err; +} + +static int ipgre_put_attrs(struct nl_msg *msg, struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + struct nlattr *data; + + data = nla_nest_start(msg, IFLA_INFO_DATA); + if (!data) + return -NLE_MSGSIZE; + + if (ipgre->ipgre_mask & IPGRE_ATTR_LINK) + NLA_PUT_U32(msg, IFLA_GRE_LINK, ipgre->link); + + if (ipgre->ipgre_mask & IFLA_GRE_IFLAGS) + NLA_PUT_U16(msg, IFLA_GRE_IFLAGS, ipgre->iflags); + + if (ipgre->ipgre_mask & IFLA_GRE_OFLAGS) + NLA_PUT_U16(msg, IFLA_GRE_OFLAGS, ipgre->oflags); + + if (ipgre->ipgre_mask & IPGRE_ATTR_IKEY) + NLA_PUT_U32(msg, IFLA_GRE_IKEY, ipgre->ikey); + + if (ipgre->ipgre_mask & IFLA_GRE_OKEY) + NLA_PUT_U32(msg, IFLA_GRE_OKEY, ipgre->okey); + + if (ipgre->ipgre_mask & IPGRE_ATTR_LOCAL) + NLA_PUT_U32(msg, IFLA_GRE_LOCAL, ipgre->local); + + if (ipgre->ipgre_mask & IPGRE_ATTR_REMOTE) + NLA_PUT_U32(msg, IFLA_GRE_REMOTE, ipgre->remote); + + if (ipgre->ipgre_mask & IPGRE_ATTR_TTL) + NLA_PUT_U8(msg, IFLA_GRE_TTL, ipgre->ttl); + + if (ipgre->ipgre_mask & IPGRE_ATTR_TOS) + NLA_PUT_U8(msg, IFLA_GRE_TOS, ipgre->tos); + + if (ipgre->ipgre_mask & IPGRE_ATTR_PMTUDISC) + NLA_PUT_U8(msg, IFLA_GRE_PMTUDISC, ipgre->pmtudisc); + + nla_nest_end(msg, data); + + nla_put_failure: + + return 0; +} + +static void ipgre_free(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + free(ipgre); + link->l_info = NULL; +} + +static void ipgre_dump_line(struct rtnl_link *link, struct nl_dump_params *p) +{ + nl_dump(p, "ipgre : %s", link->l_name); +} + +static void ipgre_dump_details(struct rtnl_link *link, struct nl_dump_params *p) +{ + struct ipgre_info *ipgre = link->l_info; + char *name, addr[INET_ADDRSTRLEN]; + + if (ipgre->ipgre_mask & IPGRE_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", ipgre->link); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_IFLAGS) { + nl_dump(p, " iflags "); + nl_dump_line(p, "%x\n", ipgre->iflags); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_OFLAGS) { + nl_dump(p, " oflags "); + nl_dump_line(p, "%x\n", ipgre->oflags); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_IKEY) { + nl_dump(p, " ikey "); + nl_dump_line(p, "%x\n",ipgre->ikey); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_OKEY) { + nl_dump(p, " okey "); + nl_dump_line(p, "%x\n", ipgre->okey); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_LOCAL) { + nl_dump(p, " local "); + if(inet_ntop(AF_INET, &ipgre->local, addr, sizeof(addr))) + nl_dump_line(p, "%s\n", addr); + else + nl_dump_line(p, "%#x\n", ntohs(ipgre->local)); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_REMOTE) { + nl_dump(p, " remote "); + if(inet_ntop(AF_INET, &ipgre->remote, addr, sizeof(addr))) + nl_dump_line(p, "%s\n", addr); + else + nl_dump_line(p, "%#x\n", ntohs(ipgre->remote)); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_TTL) { + nl_dump(p, " ttl "); + nl_dump_line(p, "%u\n", ipgre->ttl); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_TOS) { + nl_dump(p, " tos "); + nl_dump_line(p, "%u\n", ipgre->tos); + } + + if (ipgre->ipgre_mask & IPGRE_ATTR_PMTUDISC) { + nl_dump(p, " pmtudisc "); + nl_dump_line(p, "enabled (%#x)\n", ipgre->pmtudisc); + } +} + +static int ipgre_clone(struct rtnl_link *dst, struct rtnl_link *src) +{ + struct ipgre_info *ipgre_dst, *ipgre_src = src->l_info; + int err; + + dst->l_info = NULL; + + err = rtnl_link_set_type(dst, "gre"); + if (err < 0) + return err; + + ipgre_dst = dst->l_info; + + if (!ipgre_dst || !ipgre_src) + BUG(); + + memcpy(ipgre_dst, ipgre_src, sizeof(struct ipgre_info)); + + return 0; +} + +static struct rtnl_link_info_ops ipgre_info_ops = { + .io_name = "gre", + .io_alloc = ipgre_alloc, + .io_parse = ipgre_parse, + .io_dump = { + [NL_DUMP_LINE] = ipgre_dump_line, + [NL_DUMP_DETAILS] = ipgre_dump_details, + }, + .io_clone = ipgre_clone, + .io_put_attrs = ipgre_put_attrs, + .io_free = ipgre_free, +}; + +#define IS_IPGRE_LINK_ASSERT(link) \ + if ((link)->l_info_ops != &ipgre_info_ops) { \ + APPBUG("Link is not a ipgre link. set type \"gre\" first.");\ + return -NLE_OPNOTSUPP; \ + } + +struct rtnl_link *rtnl_link_ipgre_alloc(void) +{ + struct rtnl_link *link; + int err; + + link = rtnl_link_alloc(); + if (!link) + return NULL; + + err = rtnl_link_set_type(link, "gre"); + if (err < 0) { + rtnl_link_put(link); + return NULL; + } + + return link; +} + +/** + * Check if link is a IPGRE link + * @arg link Link object + * + * @return True if link is a IPGRE link, otherwise 0 is returned. + */ +int rtnl_link_is_ipgre(struct rtnl_link *link) +{ + return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "gre"); +} +/** + * Create a new ipip tunnel device + * @arg sock netlink socket + * @arg name name of the tunnel deviceL + * + * Creates a new ipip tunnel device in the kernel + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_add(struct nl_sock *sk, const char *name) +{ + struct rtnl_link *link; + int err; + + link = rtnl_link_ipgre_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 IPGRE tunnel interface index + * @arg link Link object + * @arg index interface index + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_link(struct rtnl_link *link, uint32_t index) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->link = index; + ipgre->ipgre_mask |= IPGRE_ATTR_LINK; + + return 0; +} + +/** + * Get IPGRE tunnel interface index + * @arg link Link object + * + * @return interface index + */ +uint32_t rtnl_link_ipgre_get_link(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->link; +} + +/** + * Set IPGRE tunnel set iflags + * @arg link Link object + * @arg iflags gre iflags + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_iflags(struct rtnl_link *link, uint16_t iflags) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->iflags = iflags; + ipgre->ipgre_mask |= IPGRE_ATTR_IFLAGS; + + return 0; +} + +/** + * Get IPGRE tunnel iflags + * @arg link Link object + * + * @return iflags + */ +uint16_t rtnl_link_get_iflags(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->iflags; +} + +/** + * Set IPGRE tunnel set oflags + * @arg link Link object + * @arg iflags gre oflags + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_oflags(struct rtnl_link *link, uint16_t oflags) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->oflags = oflags; + ipgre->ipgre_mask |= IPGRE_ATTR_OFLAGS; + + return 0; +} + +/** + * Get IPGRE tunnel oflags + * @arg link Link object + * + * @return oflags + */ +uint16_t rtnl_link_get_oflags(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->oflags; +} + +/** + * Set IPGRE tunnel set ikey + * @arg link Link object + * @arg ikey gre ikey + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_ikey(struct rtnl_link *link, uint32_t ikey) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->ikey = ikey; + ipgre->ipgre_mask |= IPGRE_ATTR_IKEY; + + return 0; +} + +/** + * Get IPGRE tunnel ikey + * @arg link Link object + * + * @return ikey + */ +uint32_t rtnl_link_get_ikey(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->ikey; +} + +/** + * Set IPGRE tunnel set okey + * @arg link Link object + * @arg okey gre okey + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_okey(struct rtnl_link *link, uint32_t okey) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->okey = okey; + ipgre->ipgre_mask |= IPGRE_ATTR_OKEY; + + return 0; +} + +/** + * Get IPGRE tunnel okey + * @arg link Link object + * + * @return okey value + */ +uint32_t rtnl_link_get_okey(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->okey; +} + +/** + * Set IPGRE tunnel local address + * @arg link Link object + * @arg addr local address + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_local(struct rtnl_link *link, uint32_t addr) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->local = addr; + ipgre->ipgre_mask |= IPGRE_ATTR_LOCAL; + + return 0; +} + +/** + * Get IPGRE tunnel local address + * @arg link Link object + * + * @return local address + */ +uint32_t rtnl_link_get_local(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->local; +} + +/** + * Set IPGRE tunnel remote address + * @arg link Link object + * @arg remote remote address + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_remote(struct rtnl_link *link, uint32_t remote) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->remote = remote; + ipgre->ipgre_mask |= IPGRE_ATTR_REMOTE; + + return 0; +} + +/** + * Get IPGRE tunnel remote address + * @arg link Link object + * + * @return remote address on success or a negative error code + */ +uint32_t rtnl_link_get_remote(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->remote; +} + +/** + * Set IPGRE tunnel ttl + * @arg link Link object + * @arg ttl tunnel ttl + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_ttl(struct rtnl_link *link, uint8_t ttl) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->ttl = ttl; + ipgre->ipgre_mask |= IPGRE_ATTR_TTL; + + return 0; +} + +/** + * Set IPGRE tunnel ttl + * @arg link Link object + * + * @return ttl value + */ +uint8_t rtnl_link_get_ttl(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->ttl; +} + +/** + * Set IPGRE tunnel tos + * @arg link Link object + * @arg tos tunnel tos + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_tos(struct rtnl_link *link, uint8_t tos) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->tos = tos; + ipgre->ipgre_mask |= IPGRE_ATTR_TOS; + + return 0; +} + +/** + * Get IPGRE tunnel tos + * @arg link Link object + * + * @return tos value + */ +uint8_t rtnl_link_get_tos(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->tos; +} + +/** + * Set IPGRE tunnel path MTU discovery + * @arg link Link object + * @arg pmtudisc path MTU discovery + * + * @return 0 on success or a negative error code + */ +int rtnl_link_ipgre_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + ipgre->pmtudisc = pmtudisc; + ipgre->ipgre_mask |= IPGRE_ATTR_PMTUDISC; + + return 0; +} + +/** + * Get IPGRE path MTU discovery + * @arg link Link object + * + * @return pmtudisc value + */ +uint8_t rtnl_link_get_pmtudisc(struct rtnl_link *link) +{ + struct ipgre_info *ipgre = link->l_info; + + IS_IPGRE_LINK_ASSERT(link); + + return ipgre->pmtudisc; +} + +static void __init ipgre_init(void) +{ + rtnl_link_register_info(&ipgre_info_ops); +} + +static void __exit ipgre_exit(void) +{ + rtnl_link_unregister_info(&ipgre_info_ops); +} diff --git a/tests/.gitignore b/tests/.gitignore index eaf1736c..edb8a83c 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-ipgre /test-create-ipip /test-create-veth /test-create-vlan diff --git a/tests/Makefile.am b/tests/Makefile.am index ed7bd494..5bc939e1 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-ipgre \ test-create-ipip \ test-delete-link \ test-socket-creation \ diff --git a/tests/test-create-ipgre.c b/tests/test-create-ipgre.c new file mode 100644 index 00000000..66ea6da8 --- /dev/null +++ b/tests/test-create-ipgre.c @@ -0,0 +1,56 @@ +#include <netlink/route/link/ipgre.h> +#include <netlink-private/netlink.h> + +int main(int argc, char *argv[]) +{ + struct nl_cache *link_cache; + struct rtnl_link *link; + struct in_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, "eno16777736"); + if (!if_index) { + fprintf(stderr, "Unable to lookup eno16777736"); + return -1; + } + + link = rtnl_link_ipgre_alloc(); + if(!link) { + nl_perror(err, "Unable to allocate link"); + return -1; + + } + rtnl_link_set_name(link, "ipgre-tun"); + rtnl_link_ipgre_set_link(link, if_index); + + inet_pton(AF_INET, "192.168.254.12", &addr.s_addr); + rtnl_link_ipgre_set_local(link, addr.s_addr); + + inet_pton(AF_INET, "192.168.254.13", &addr.s_addr); + rtnl_link_ipgre_set_remote(link, addr.s_addr); + + rtnl_link_ipgre_set_ttl(link, 64); + 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; +} |