ipvlan: add ipvlan support
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Thomas Haller <thaller@redhat.com>
This commit is contained in:
parent
d754cb4543
commit
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6 changed files with 343 additions and 1 deletions
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@ -60,6 +60,7 @@ nobase_libnlinclude_HEADERS = \
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netlink/route/link/ipip.h \
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netlink/route/link/ipvti.h \
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netlink/route/link/sit.h \
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netlink/route/link/ipvlan.h \
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netlink/route/qdisc/cbq.h \
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netlink/route/qdisc/dsmark.h \
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netlink/route/qdisc/fifo.h \
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@ -305,6 +305,21 @@ enum macvlan_mode {
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#define MACVLAN_FLAG_NOPROMISC 1
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/* IPVLAN section */
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enum {
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IFLA_IPVLAN_UNSPEC,
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IFLA_IPVLAN_MODE,
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__IFLA_IPVLAN_MAX
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};
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#define IFLA_IPVLAN_MAX (__IFLA_IPVLAN_MAX - 1)
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enum ipvlan_mode {
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IPVLAN_MODE_L2 = 0,
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IPVLAN_MODE_L3,
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IPVLAN_MODE_MAX
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};
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/* VXLAN section */
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enum {
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IFLA_VXLAN_UNSPEC,
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37
include/netlink/route/link/ipvlan.h
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37
include/netlink/route/link/ipvlan.h
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@ -0,0 +1,37 @@
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/*
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* netlink/route/link/ipvlan.h IPVLAN interface
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* Copyright (c) 2015 Cong Wang <cwang@twopensource.com>
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*/
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#ifndef NETLINK_LINK_IPVLAN_H_
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#define NETLINK_LINK_IPVLAN_H_
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#include <netlink/netlink.h>
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#include <netlink/route/link.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern struct rtnl_link *rtnl_link_ipvlan_alloc(void);
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extern int rtnl_link_is_ipvlan(struct rtnl_link *);
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extern char * rtnl_link_ipvlan_mode2str(int, char *, size_t);
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extern int rtnl_link_ipvlan_str2mode(const char *);
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extern int rtnl_link_ipvlan_set_mode(struct rtnl_link *,
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uint16_t);
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extern uint16_t rtnl_link_ipvlan_get_mode(struct rtnl_link *);
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#ifdef __cplusplus
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}
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#endif
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#endif
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@ -110,7 +110,7 @@ libnl_route_3_la_SOURCES = \
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route/link/bonding.c route/link/can.c route/link/macvlan.c \
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route/link/vxlan.c route/link/veth.c route/link/ipip.c \
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route/link/ipgre.c route/link/sit.c route/link/ipvti.c \
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route/link/ip6tnl.c route/link/ifb.c \
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route/link/ip6tnl.c route/link/ifb.c route/link/ipvlan.c \
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\
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route/qdisc/blackhole.c route/qdisc/cbq.c route/qdisc/dsmark.c \
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route/qdisc/fifo.c route/qdisc/htb.c route/qdisc/netem.c \
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279
lib/route/link/ipvlan.c
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279
lib/route/link/ipvlan.c
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@ -0,0 +1,279 @@
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/*
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* lib/route/link/ipvlan.c IPVLAN Link Info
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* Copyright (c) 2015 Cong Wang <cwang@twopensource.com>
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*/
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/**
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* @ingroup link
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* @defgroup ipvlan IPVLAN
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* IP-based Virtual LAN link module
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*
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* @details
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* \b Link Type Name: "ipvlan"
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*
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* @route_doc{link_ipvlan, IPVLAN Documentation}
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*
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* @{
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*/
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#include <netlink-private/netlink.h>
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#include <netlink/netlink.h>
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#include <netlink/attr.h>
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#include <netlink/utils.h>
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#include <netlink/object.h>
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#include <netlink/route/rtnl.h>
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#include <netlink-private/route/link/api.h>
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#include <netlink/route/link/ipvlan.h>
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#include <linux/if_link.h>
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/** @cond SKIP */
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#define IPVLAN_HAS_MODE (1<<0)
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struct ipvlan_info
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{
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uint16_t ipi_mode;
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uint32_t ipi_mask;
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};
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/** @endcond */
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static struct nla_policy ipvlan_policy[IFLA_IPVLAN_MAX+1] = {
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[IFLA_IPVLAN_MODE] = { .type = NLA_U16 },
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};
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static int ipvlan_alloc(struct rtnl_link *link)
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{
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struct ipvlan_info *ipi;
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if (link->l_info)
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memset(link->l_info, 0, sizeof(*ipi));
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else {
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if ((ipi = calloc(1, sizeof(*ipi))) == NULL)
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return -NLE_NOMEM;
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link->l_info = ipi;
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}
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return 0;
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}
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static int ipvlan_parse(struct rtnl_link *link, struct nlattr *data,
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struct nlattr *xstats)
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{
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struct nlattr *tb[IFLA_IPVLAN_MAX+1];
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struct ipvlan_info *ipi;
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int err;
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NL_DBG(3, "Parsing IPVLAN link info");
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if ((err = nla_parse_nested(tb, IFLA_IPVLAN_MAX, data, ipvlan_policy)) < 0)
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goto errout;
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if ((err = ipvlan_alloc(link)) < 0)
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goto errout;
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ipi = link->l_info;
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if (tb[IFLA_IPVLAN_MODE]) {
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ipi->ipi_mode = nla_get_u16(tb[IFLA_IPVLAN_MODE]);
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ipi->ipi_mask |= IPVLAN_HAS_MODE;
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}
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err = 0;
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errout:
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return err;
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}
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static void ipvlan_free(struct rtnl_link *link)
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{
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free(link->l_info);
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link->l_info = NULL;
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}
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static void ipvlan_dump(struct rtnl_link *link, struct nl_dump_params *p)
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{
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char buf[64];
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struct ipvlan_info *ipi = link->l_info;
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if (ipi->ipi_mask & IPVLAN_HAS_MODE) {
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rtnl_link_ipvlan_mode2str(ipi->ipi_mode, buf, sizeof(buf));
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nl_dump(p, "ipvlan-mode %s", buf);
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}
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}
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static int ipvlan_clone(struct rtnl_link *dst, struct rtnl_link *src)
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{
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struct ipvlan_info *vdst, *vsrc = src->l_info;
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int err;
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dst->l_info = NULL;
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if ((err = rtnl_link_set_type(dst, "ipvlan")) < 0)
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return err;
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vdst = dst->l_info;
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if (!vdst || !vsrc)
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return -NLE_NOMEM;
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memcpy(vdst, vsrc, sizeof(struct ipvlan_info));
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return 0;
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}
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static int ipvlan_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
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{
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struct ipvlan_info *ipi = link->l_info;
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struct nlattr *data;
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if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
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return -NLE_MSGSIZE;
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if (ipi->ipi_mask & IPVLAN_HAS_MODE)
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NLA_PUT_U16(msg, IFLA_IPVLAN_MODE, ipi->ipi_mode);
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nla_nest_end(msg, data);
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nla_put_failure:
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return 0;
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}
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static struct rtnl_link_info_ops ipvlan_info_ops = {
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.io_name = "ipvlan",
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.io_alloc = ipvlan_alloc,
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.io_parse = ipvlan_parse,
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.io_dump = {
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[NL_DUMP_LINE] = ipvlan_dump,
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[NL_DUMP_DETAILS] = ipvlan_dump,
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},
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.io_clone = ipvlan_clone,
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.io_put_attrs = ipvlan_put_attrs,
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.io_free = ipvlan_free,
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};
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/** @cond SKIP */
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#define IS_IPVLAN_LINK_ASSERT(link) \
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if ((link)->l_info_ops != &ipvlan_info_ops) { \
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APPBUG("Link is not a ipvlan link. set type \"ipvlan\" first."); \
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return -NLE_OPNOTSUPP; \
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}
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/** @endcond */
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/**
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* @name IPVLAN Object
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* @{
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*/
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/**
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* Allocate link object of type IPVLAN
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*
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* @return Allocated link object or NULL.
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*/
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struct rtnl_link *rtnl_link_ipvlan_alloc(void)
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{
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struct rtnl_link *link;
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int err;
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if (!(link = rtnl_link_alloc()))
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return NULL;
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if ((err = rtnl_link_set_type(link, "ipvlan")) < 0) {
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rtnl_link_put(link);
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return NULL;
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}
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return link;
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}
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/**
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* Check if link is a IPVLAN link
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* @arg link Link object
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*
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* @return True if link is a IPVLAN link, otherwise false is returned.
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*/
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int rtnl_link_is_ipvlan(struct rtnl_link *link)
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{
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return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "ipvlan");
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}
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/**
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* Set IPVLAN MODE
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* @arg link Link object
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* @arg mode IPVLAN mode
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*
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* @return 0 on success or a negative error code
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*/
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int rtnl_link_ipvlan_set_mode(struct rtnl_link *link, uint16_t mode)
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{
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struct ipvlan_info *ipi = link->l_info;
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IS_IPVLAN_LINK_ASSERT(link);
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if (mode != IPVLAN_MODE_L2 && mode != IPVLAN_MODE_L3)
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return -NLE_INVAL;
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ipi->ipi_mode = mode;
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ipi->ipi_mask |= IPVLAN_HAS_MODE;
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return 0;
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}
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/**
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* Get IPVLAN Mode
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* @arg link Link object
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*
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* @return IPVLAN mode, 0 if not set or a negative error code.
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*/
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uint16_t rtnl_link_ipvlan_get_mode(struct rtnl_link *link)
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{
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struct ipvlan_info *ipi = link->l_info;
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IS_IPVLAN_LINK_ASSERT(link);
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if (ipi->ipi_mask & IPVLAN_HAS_MODE)
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return ipi->ipi_mode;
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else
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return 0;
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}
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/** @} */
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static const struct trans_tbl ipvlan_modes[] = {
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__ADD(IPVLAN_MODE_L2, l2),
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__ADD(IPVLAN_MODE_L3, l3),
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};
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/**
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* @name Mode Translation
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* @{
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*/
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char *rtnl_link_ipvlan_mode2str(int mode, char *buf, size_t len)
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{
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return __type2str(mode, buf, len, ipvlan_modes, ARRAY_SIZE(ipvlan_modes));
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}
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int rtnl_link_ipvlan_str2mode(const char *name)
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{
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return __str2type(name, ipvlan_modes, ARRAY_SIZE(ipvlan_modes));
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}
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/** @} */
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static void __init ipvlan_init(void)
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{
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rtnl_link_register_info(&ipvlan_info_ops);
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}
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static void __exit ipvlan_exit(void)
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{
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rtnl_link_unregister_info(&ipvlan_info_ops);
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}
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/** @} */
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@ -872,3 +872,13 @@ global:
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rtnl_tc_str2stat;
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rtnl_u32_get_classid;
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} libnl_3;
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libnl_3_2_27 {
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global:
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rtnl_link_ipvlan_alloc;
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rtnl_link_is_ipvlan;
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rtnl_link_ipvlan_mode2str;
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rtnl_link_ipvlan_str2mode;
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rtnl_link_ipvlan_set_mode;
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rtnl_link_ipvlan_get_mode;
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} libnl_3_2_26;
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