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