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/* SPDX-License-Identifier: LGPL-2.1-only */
/*
* Copyright (c) 2003-2012 Thomas Graf <tgraf@suug.ch>
*/
/**
* @defgroup rtnl Routing Library (libnl-route)
* @{
*/
#include <netlink-private/netlink.h>
#include <netlink/netlink.h>
#include <netlink/utils.h>
#include <netlink/route/rtnl.h>
/**
* @name Sending
* @{
*/
/**
* Send routing netlink request message
* @arg sk Netlink socket.
* @arg type Netlink message type.
* @arg family Address family.
* @arg flags Additional netlink message flags.
*
* Fills out a routing netlink request message and sends it out
* using nl_send_simple().
*
* @return 0 on success or a negative error code. Due to a bug in older
* version of the library, this function returned the number of bytes sent.
* Treat any non-negative number as success.
*/
int nl_rtgen_request(struct nl_sock *sk, int type, int family, int flags)
{
int err;
struct rtgenmsg gmsg = {
.rtgen_family = family,
};
err = nl_send_simple(sk, type, flags, &gmsg, sizeof(gmsg));
return err >= 0 ? 0 : err;
}
/** @} */
/**
* @name Routing Type Translations
* @{
*/
static const struct trans_tbl rtntypes[] = {
__ADD(RTN_UNSPEC,unspec),
__ADD(RTN_UNICAST,unicast),
__ADD(RTN_LOCAL,local),
__ADD(RTN_BROADCAST,broadcast),
__ADD(RTN_ANYCAST,anycast),
__ADD(RTN_MULTICAST,multicast),
__ADD(RTN_BLACKHOLE,blackhole),
__ADD(RTN_UNREACHABLE,unreachable),
__ADD(RTN_PROHIBIT,prohibit),
__ADD(RTN_THROW,throw),
__ADD(RTN_NAT,nat),
__ADD(RTN_XRESOLVE,xresolve),
};
char *nl_rtntype2str(int type, char *buf, size_t size)
{
return __type2str(type, buf, size, rtntypes, ARRAY_SIZE(rtntypes));
}
int nl_str2rtntype(const char *name)
{
return __str2type(name, rtntypes, ARRAY_SIZE(rtntypes));
}
/** @} */
/**
* @name Scope Translations
* @{
*/
static const struct trans_tbl scopes[] = {
__ADD(255,nowhere),
__ADD(254,host),
__ADD(253,link),
__ADD(200,site),
__ADD(0,global),
};
char *rtnl_scope2str(int scope, char *buf, size_t size)
{
return __type2str(scope, buf, size, scopes, ARRAY_SIZE(scopes));
}
int rtnl_str2scope(const char *name)
{
return __str2type(name, scopes, ARRAY_SIZE(scopes));
}
/** @} */
/**
* @name Realms Translations
* @{
*/
char * rtnl_realms2str(uint32_t realms, char *buf, size_t len)
{
int from = RTNL_REALM_FROM(realms);
int to = RTNL_REALM_TO(realms);
snprintf(buf, len, "%d/%d", from, to);
return buf;
}
/** @} */
/** @} */
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