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