[linux-block.git] / include / net / rtnh.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_RTNH_H
#define __NET_RTNH_H

#include <linux/rtnetlink.h>
#include <net/netlink.h>

static inline int rtnh_ok(const struct rtnexthop *rtnh, int remaining)
{
	return remaining >= (int)sizeof(*rtnh) &&
	       rtnh->rtnh_len >= sizeof(*rtnh) &&
	       rtnh->rtnh_len <= remaining;
}

static inline struct rtnexthop *rtnh_next(const struct rtnexthop *rtnh,
                                         int *remaining)
{
	int totlen = NLA_ALIGN(rtnh->rtnh_len);

	*remaining -= totlen;
	return (struct rtnexthop *) ((char *) rtnh + totlen);
}

static inline struct nlattr *rtnh_attrs(const struct rtnexthop *rtnh)
{
	return (struct nlattr *) ((char *) rtnh + NLA_ALIGN(sizeof(*rtnh)));
}

static inline int rtnh_attrlen(const struct rtnexthop *rtnh)
{
	return rtnh->rtnh_len - NLA_ALIGN(sizeof(*rtnh));
}

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
3c618c1d DA	2	#ifndef __NET_RTNH_H
3c618c1d DA	3	#define __NET_RTNH_H
4e902c57 TG	4
	5	#include <linux/rtnetlink.h>
	6	#include <net/netlink.h>
	7
	8	static inline int rtnh_ok(const struct rtnexthop *rtnh, int remaining)
	9	{
b1993a2d	10	return remaining >= (int)sizeof(*rtnh) &&
4e902c57 TG	11	rtnh->rtnh_len >= sizeof(*rtnh) &&
	12	rtnh->rtnh_len <= remaining;
	13	}
	14
	15	static inline struct rtnexthop rtnh_next(const struct rtnexthop rtnh,
	16	int *remaining)
	17	{
	18	int totlen = NLA_ALIGN(rtnh->rtnh_len);
	19
	20	*remaining -= totlen;
	21	return (struct rtnexthop ) ((char ) rtnh + totlen);
	22	}
	23
	24	static inline struct nlattr rtnh_attrs(const struct rtnexthop rtnh)
	25	{
	26	return (struct nlattr ) ((char ) rtnh + NLA_ALIGN(sizeof(*rtnh)));
	27	}
	28
	29	static inline int rtnh_attrlen(const struct rtnexthop *rtnh)
	30	{
	31	return rtnh->rtnh_len - NLA_ALIGN(sizeof(*rtnh));
	32	}
	33
	34	#endif