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linux/include/net/nexthop.h
Thomas Graf 4e902c5741 [IPv4]: FIB configuration using struct fib_config
Introduces struct fib_config replacing the ugly struct kern_rta
prone to ordering issues. Avoids creating faked netlink messages
for auto generated routes or requests via ioctl.

A new interface net/nexthop.h is added to help navigate through
nexthop configuration arrays.

A new struct nl_info will be used to carry the necessary netlink
information to be used for notifications later on.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-22 14:55:04 -07:00

34 lines
821 B
C

#ifndef __NET_NEXTHOP_H
#define __NET_NEXTHOP_H
#include <linux/rtnetlink.h>
#include <net/netlink.h>
static inline int rtnh_ok(const struct rtnexthop *rtnh, int remaining)
{
return remaining >= 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