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lib: Define generic IP address structure

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Define an IP address structure which is a union of an IPv4 and IPv6
address. This is for subsequent use in EVPN.

Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
vivek 2017-05-14 22:19:43 -07:00
parent 4e9da20145
commit 482c0fb076
2 changed files with 95 additions and 0 deletions
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1
lib/Makefile.am
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@ -83,6 +83,7 @@ pkginclude_HEADERS = \
vrf_int.h \
vlan.h \
vxlan.h \
ipaddr.h \
# end
noinst_HEADERS = \

94
lib/ipaddr.h Normal file
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@ -0,0 +1,94 @@
/*
* IP address structure (for generic IPv4 or IPv6 address)
* Copyright (C) 2016, 2017 Cumulus Networks, Inc.
*
* This file is part of FRR.
*
* FRR is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* FRR is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FRR; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef __IPADDR_H__
#define __IPADDR_H__
#include <zebra.h>
/*
* Generic IP address - union of IPv4 and IPv6 address.
*/
enum ipaddr_type_t
{
IPADDR_NONE = 0,
IPADDR_V4 = 1, /* IPv4 */
IPADDR_V6 = 2, /* IPv6 */
};
typedef struct ipaddr
{
enum ipaddr_type_t ipa_type;
union
{
u_char addr;
struct in_addr _v4_addr;
struct in6_addr _v6_addr;
} ip;
#define ipaddr_v4 ip._v4_addr
#define ipaddr_v6 ip._v6_addr
} ipaddr_t;
#define IS_IPADDR_NONE(p) ((p)->ipa_type == IPADDR_NONE)
#define IS_IPADDR_V4(p) ((p)->ipa_type == IPADDR_V4)
#define IS_IPADDR_V6(p) ((p)->ipa_type == IPADDR_V6)
#define SET_IPADDR_V4(p) (p)->ipa_type = IPADDR_V4
#define SET_IPADDR_V6(p) (p)->ipa_type = IPADDR_V6
static inline int
str2ipaddr (const char *str, ipaddr_t *ip)
{
int ret;
memset (ip, 0, sizeof (ipaddr_t));
ret = inet_pton (AF_INET, str, &ip->ipaddr_v4);
if (ret > 0) /* Valid IPv4 address. */
{
ip->ipa_type = IPADDR_V4;
return 0;
}
ret = inet_pton (AF_INET6, str, &ip->ipaddr_v6);
if (ret > 0) /* Valid IPv6 address. */
{
ip->ipa_type = IPADDR_V6;
return 0;
}
return -1;
}
static inline char *
ipaddr2str (ipaddr_t *ip, char *buf, int size)
{
buf[0] = '\0';
if (ip)
{
if (IS_IPADDR_V4(ip))
inet_ntop (AF_INET, &ip->ip.addr, buf, size);
else if (IS_IPADDR_V6(ip))
inet_ntop (AF_INET6, &ip->ip.addr, buf, size);
}
return buf;
}
#endif /* __IPADDR_H__ */