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843 lines
18 KiB
843 lines
18 KiB
/*
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* lib/route/link/ipgre.c IPGRE 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) 2014 Susant Sahani <susant@redhat.com>
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*/
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/**
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* @ingroup link
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* @defgroup ipgre IPGRE
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* ipgre link module
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*
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* @details
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* \b Link Type Name: "ipgre"
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*
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* @route_doc{link_ipgre, IPGRE 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/route/link/ipgre.h>
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#include <netlink-private/route/link/api.h>
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#include <linux/if_tunnel.h>
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#define IPGRE_ATTR_LINK (1 << 0)
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#define IPGRE_ATTR_IFLAGS (1 << 1)
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#define IPGRE_ATTR_OFLAGS (1 << 2)
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#define IPGRE_ATTR_IKEY (1 << 3)
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#define IPGRE_ATTR_OKEY (1 << 4)
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#define IPGRE_ATTR_LOCAL (1 << 5)
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#define IPGRE_ATTR_REMOTE (1 << 6)
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#define IPGRE_ATTR_TTL (1 << 7)
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#define IPGRE_ATTR_TOS (1 << 8)
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#define IPGRE_ATTR_PMTUDISC (1 << 9)
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struct ipgre_info
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{
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uint8_t ttl;
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uint8_t tos;
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uint8_t pmtudisc;
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uint16_t iflags;
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uint16_t oflags;
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uint32_t ikey;
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uint32_t okey;
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uint32_t link;
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uint32_t local;
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uint32_t remote;
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uint32_t ipgre_mask;
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};
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static struct nla_policy ipgre_policy[IFLA_GRE_MAX + 1] = {
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[IFLA_GRE_LINK] = { .type = NLA_U32 },
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[IFLA_GRE_IFLAGS] = { .type = NLA_U16 },
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[IFLA_GRE_OFLAGS] = { .type = NLA_U16 },
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[IFLA_GRE_IKEY] = { .type = NLA_U32 },
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[IFLA_GRE_OKEY] = { .type = NLA_U32 },
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[IFLA_GRE_LOCAL] = { .type = NLA_U32 },
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[IFLA_GRE_REMOTE] = { .type = NLA_U32 },
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[IFLA_GRE_TTL] = { .type = NLA_U8 },
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[IFLA_GRE_TOS] = { .type = NLA_U8 },
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[IFLA_GRE_PMTUDISC] = { .type = NLA_U8 },
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};
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static int ipgre_alloc(struct rtnl_link *link)
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{
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struct ipgre_info *ipgre;
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if (link->l_info)
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memset(link->l_info, 0, sizeof(*ipgre));
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else {
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ipgre = calloc(1, sizeof(*ipgre));
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if (!ipgre)
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return -NLE_NOMEM;
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link->l_info = ipgre;
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}
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return 0;
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}
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static int ipgre_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_GRE_MAX + 1];
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struct ipgre_info *ipgre;
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int err;
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NL_DBG(3, "Parsing IPGRE link info\n");
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err = nla_parse_nested(tb, IFLA_GRE_MAX, data, ipgre_policy);
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if (err < 0)
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goto errout;
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err = ipgre_alloc(link);
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if (err < 0)
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goto errout;
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ipgre = link->l_info;
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if (tb[IFLA_GRE_LINK]) {
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ipgre->link = nla_get_u32(tb[IFLA_GRE_LINK]);
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ipgre->ipgre_mask |= IPGRE_ATTR_LINK;
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}
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if (tb[IFLA_GRE_IFLAGS]) {
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ipgre->iflags = nla_get_u16(tb[IFLA_GRE_IFLAGS]);
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ipgre->ipgre_mask |= IPGRE_ATTR_IFLAGS;
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}
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if (tb[IFLA_GRE_OFLAGS]) {
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ipgre->oflags = nla_get_u16(tb[IFLA_GRE_OFLAGS]);
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ipgre->ipgre_mask |= IPGRE_ATTR_OFLAGS;
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}
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if (tb[IFLA_GRE_IKEY]) {
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ipgre->ikey = nla_get_u32(tb[IFLA_GRE_IKEY]);
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ipgre->ipgre_mask |= IPGRE_ATTR_IKEY;
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}
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if (tb[IFLA_GRE_OKEY]) {
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ipgre->okey = nla_get_u32(tb[IFLA_GRE_OKEY]);
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ipgre->ipgre_mask |= IPGRE_ATTR_OKEY;
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}
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if (tb[IFLA_GRE_LOCAL]) {
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ipgre->local = nla_get_u32(tb[IFLA_GRE_LOCAL]);
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ipgre->ipgre_mask |= IPGRE_ATTR_LOCAL;
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}
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if (tb[IFLA_GRE_REMOTE]) {
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ipgre->remote = nla_get_u32(tb[IFLA_GRE_REMOTE]);
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ipgre->ipgre_mask |= IPGRE_ATTR_REMOTE;
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}
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if (tb[IFLA_GRE_TTL]) {
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ipgre->ttl = nla_get_u8(tb[IFLA_GRE_TTL]);
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ipgre->ipgre_mask |= IPGRE_ATTR_TTL;
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}
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if (tb[IFLA_GRE_TOS]) {
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ipgre->tos = nla_get_u8(tb[IFLA_GRE_TOS]);
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ipgre->ipgre_mask |= IPGRE_ATTR_TOS;
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}
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if (tb[IFLA_GRE_PMTUDISC]) {
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ipgre->pmtudisc = nla_get_u8(tb[IFLA_GRE_PMTUDISC]);
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ipgre->ipgre_mask |= IPGRE_ATTR_PMTUDISC;
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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 int ipgre_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
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{
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struct ipgre_info *ipgre = link->l_info;
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struct nlattr *data;
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data = nla_nest_start(msg, IFLA_INFO_DATA);
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if (!data)
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return -NLE_MSGSIZE;
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if (ipgre->ipgre_mask & IPGRE_ATTR_LINK)
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NLA_PUT_U32(msg, IFLA_GRE_LINK, ipgre->link);
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if (ipgre->ipgre_mask & IFLA_GRE_IFLAGS)
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NLA_PUT_U16(msg, IFLA_GRE_IFLAGS, ipgre->iflags);
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if (ipgre->ipgre_mask & IFLA_GRE_OFLAGS)
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NLA_PUT_U16(msg, IFLA_GRE_OFLAGS, ipgre->oflags);
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if (ipgre->ipgre_mask & IPGRE_ATTR_IKEY)
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NLA_PUT_U32(msg, IFLA_GRE_IKEY, ipgre->ikey);
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if (ipgre->ipgre_mask & IPGRE_ATTR_OKEY)
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NLA_PUT_U32(msg, IFLA_GRE_OKEY, ipgre->okey);
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if (ipgre->ipgre_mask & IPGRE_ATTR_LOCAL)
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NLA_PUT_U32(msg, IFLA_GRE_LOCAL, ipgre->local);
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if (ipgre->ipgre_mask & IPGRE_ATTR_REMOTE)
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NLA_PUT_U32(msg, IFLA_GRE_REMOTE, ipgre->remote);
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if (ipgre->ipgre_mask & IPGRE_ATTR_TTL)
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NLA_PUT_U8(msg, IFLA_GRE_TTL, ipgre->ttl);
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if (ipgre->ipgre_mask & IPGRE_ATTR_TOS)
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NLA_PUT_U8(msg, IFLA_GRE_TOS, ipgre->tos);
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if (ipgre->ipgre_mask & IPGRE_ATTR_PMTUDISC)
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NLA_PUT_U8(msg, IFLA_GRE_PMTUDISC, ipgre->pmtudisc);
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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 void ipgre_free(struct rtnl_link *link)
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{
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struct ipgre_info *ipgre = link->l_info;
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free(ipgre);
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link->l_info = NULL;
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}
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static void ipgre_dump_line(struct rtnl_link *link, struct nl_dump_params *p)
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{
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nl_dump(p, "ipgre : %s", link->l_name);
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}
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static void ipgre_dump_details(struct rtnl_link *link, struct nl_dump_params *p)
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{
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struct ipgre_info *ipgre = link->l_info;
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char *name, addr[INET_ADDRSTRLEN];
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struct rtnl_link *parent;
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if (ipgre->ipgre_mask & IPGRE_ATTR_LINK) {
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nl_dump(p, " link ");
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name = NULL;
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parent = link_lookup(link->ce_cache, ipgre->link);
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if (parent)
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name = rtnl_link_get_name(parent);
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if (name)
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nl_dump_line(p, "%s\n", name);
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else
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nl_dump_line(p, "%u\n", ipgre->link);
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_IFLAGS) {
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nl_dump(p, " iflags ");
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nl_dump_line(p, "%x\n", ipgre->iflags);
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_OFLAGS) {
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nl_dump(p, " oflags ");
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nl_dump_line(p, "%x\n", ipgre->oflags);
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_IKEY) {
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nl_dump(p, " ikey ");
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nl_dump_line(p, "%x\n",ipgre->ikey);
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_OKEY) {
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nl_dump(p, " okey ");
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nl_dump_line(p, "%x\n", ipgre->okey);
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_LOCAL) {
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nl_dump(p, " local ");
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if(inet_ntop(AF_INET, &ipgre->local, addr, sizeof(addr)))
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nl_dump_line(p, "%s\n", addr);
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else
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nl_dump_line(p, "%#x\n", ntohs(ipgre->local));
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_REMOTE) {
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nl_dump(p, " remote ");
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if(inet_ntop(AF_INET, &ipgre->remote, addr, sizeof(addr)))
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nl_dump_line(p, "%s\n", addr);
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else
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nl_dump_line(p, "%#x\n", ntohs(ipgre->remote));
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_TTL) {
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nl_dump(p, " ttl ");
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nl_dump_line(p, "%u\n", ipgre->ttl);
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_TOS) {
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nl_dump(p, " tos ");
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nl_dump_line(p, "%u\n", ipgre->tos);
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}
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if (ipgre->ipgre_mask & IPGRE_ATTR_PMTUDISC) {
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nl_dump(p, " pmtudisc ");
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nl_dump_line(p, "enabled (%#x)\n", ipgre->pmtudisc);
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}
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}
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static int ipgre_clone(struct rtnl_link *dst, struct rtnl_link *src)
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{
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struct ipgre_info *ipgre_dst, *ipgre_src = src->l_info;
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int err;
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dst->l_info = NULL;
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err = rtnl_link_set_type(dst, "gre");
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if (err < 0)
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return err;
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ipgre_dst = dst->l_info;
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if (!ipgre_dst || !ipgre_src)
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BUG();
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memcpy(ipgre_dst, ipgre_src, sizeof(struct ipgre_info));
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return 0;
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}
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static int ipgretap_clone(struct rtnl_link *dst, struct rtnl_link *src)
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{
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struct ipgre_info *ipgre_dst, *ipgre_src = src->l_info;
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int err;
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dst->l_info = NULL;
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err = rtnl_link_set_type(dst, "gretap");
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if (err < 0)
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return err;
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ipgre_dst = dst->l_info;
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if (!ipgre_dst || !ipgre_src)
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BUG();
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memcpy(ipgre_dst, ipgre_src, sizeof(struct ipgre_info));
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return 0;
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}
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static struct rtnl_link_info_ops ipgre_info_ops = {
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.io_name = "gre",
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.io_alloc = ipgre_alloc,
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.io_parse = ipgre_parse,
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.io_dump = {
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[NL_DUMP_LINE] = ipgre_dump_line,
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[NL_DUMP_DETAILS] = ipgre_dump_details,
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},
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.io_clone = ipgre_clone,
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.io_put_attrs = ipgre_put_attrs,
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.io_free = ipgre_free,
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};
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static struct rtnl_link_info_ops ipgretap_info_ops = {
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.io_name = "gretap",
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.io_alloc = ipgre_alloc,
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.io_parse = ipgre_parse,
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.io_dump = {
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[NL_DUMP_LINE] = ipgre_dump_line,
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[NL_DUMP_DETAILS] = ipgre_dump_details,
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},
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.io_clone = ipgretap_clone,
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.io_put_attrs = ipgre_put_attrs,
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.io_free = ipgre_free,
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};
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#define IS_IPGRE_LINK_ASSERT(link) \
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if ((link)->l_info_ops != &ipgre_info_ops && \
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(link)->l_info_ops != &ipgretap_info_ops) { \
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APPBUG("Link is not a ipgre link. set type \"gre/gretap\" first.");\
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return -NLE_OPNOTSUPP; \
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}
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struct rtnl_link *rtnl_link_ipgre_alloc(void)
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{
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struct rtnl_link *link;
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int err;
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link = rtnl_link_alloc();
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if (!link)
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return NULL;
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err = rtnl_link_set_type(link, "gre");
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if (err < 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 IPGRE link
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* @arg link Link object
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*
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* @return True if link is a IPGRE link, otherwise 0 is returned.
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*/
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int rtnl_link_is_ipgre(struct rtnl_link *link)
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{
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return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "gre");
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}
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/**
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* Create a new IPGRE tunnel device
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* @arg sock netlink socket
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* @arg name name of the tunnel deviceL
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*
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* Creates a new ipip tunnel device in the kernel
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* @return 0 on success or a negative error code
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*/
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int rtnl_link_ipgre_add(struct nl_sock *sk, const char *name)
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{
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struct rtnl_link *link;
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int err;
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link = rtnl_link_ipgre_alloc();
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if (!link)
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return -NLE_NOMEM;
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if(name)
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rtnl_link_set_name(link, name);
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err = rtnl_link_add(sk, link, NLM_F_CREATE);
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rtnl_link_put(link);
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return err;
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}
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struct rtnl_link *rtnl_link_ipgretap_alloc(void)
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{
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struct rtnl_link *link;
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int err;
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link = rtnl_link_alloc();
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if (!link)
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return NULL;
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err = rtnl_link_set_type(link, "gretap");
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if (err < 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 IPGRETAP link
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* @arg link Link object
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*
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* @return True if link is a IPGRETAP link, otherwise 0 is returned.
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*/
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int rtnl_link_is_ipgretap(struct rtnl_link *link)
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{
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return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "gretap");
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}
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/**
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* Create a new IPGRETAP tunnel device
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* @arg sock netlink socket
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* @arg name name of the tunnel deviceL
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*
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* Creates a new IPGRETAP tunnel device in the kernel
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* @return 0 on success or a negative error code
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*/
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int rtnl_link_ipgretap_add(struct nl_sock *sk, const char *name)
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{
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struct rtnl_link *link;
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int err;
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link = rtnl_link_ipgretap_alloc();
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if (!link)
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return -NLE_NOMEM;
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if(name)
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rtnl_link_set_name(link, name);
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err = rtnl_link_add(sk, link, NLM_F_CREATE);
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rtnl_link_put(link);
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return err;
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}
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/**
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* Set IPGRE tunnel interface index
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* @arg link Link object
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* @arg index interface index
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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_ipgre_set_link(struct rtnl_link *link, uint32_t index)
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{
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struct ipgre_info *ipgre = link->l_info;
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IS_IPGRE_LINK_ASSERT(link);
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ipgre->link = index;
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ipgre->ipgre_mask |= IPGRE_ATTR_LINK;
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return 0;
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}
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/**
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* Get IPGRE tunnel interface index
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* @arg link Link object
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*
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* @return interface index
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*/
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uint32_t rtnl_link_ipgre_get_link(struct rtnl_link *link)
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{
|
|
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_ipgre_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_ipgre_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_ipgre_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_ipgre_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_ipgre_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_ipgre_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_ipgre_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_ipgre_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_ipgre_get_pmtudisc(struct rtnl_link *link)
|
|
{
|
|
struct ipgre_info *ipgre = link->l_info;
|
|
|
|
IS_IPGRE_LINK_ASSERT(link);
|
|
|
|
return ipgre->pmtudisc;
|
|
}
|
|
|
|
/* Function prototype for ABI-preserving wrapper (not in public header) to avoid
|
|
* GCC warning about missing prototype. */
|
|
uint8_t rtnl_link_get_pmtudisc(struct rtnl_link *link);
|
|
|
|
uint8_t rtnl_link_get_pmtudisc(struct rtnl_link *link)
|
|
{
|
|
/* rtnl_link_ipgre_get_pmtudisc() was wrongly named. Keep this
|
|
* to preserve ABI. */
|
|
return rtnl_link_ipgre_get_pmtudisc (link);
|
|
}
|
|
|
|
static void __init ipgre_init(void)
|
|
{
|
|
rtnl_link_register_info(&ipgre_info_ops);
|
|
rtnl_link_register_info(&ipgretap_info_ops);
|
|
}
|
|
|
|
static void __exit ipgre_exit(void)
|
|
{
|
|
rtnl_link_unregister_info(&ipgre_info_ops);
|
|
rtnl_link_unregister_info(&ipgretap_info_ops);
|
|
}
|