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| author | David S. Miller <davem@davemloft.net> | 2012-07-13 05:03:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-20 13:31:20 -0700 |
| commit | f8126f1d5136be1ca1a3536d43ad7a710b5620f8 (patch) | |
| tree | 8a92815052257c4ca29461f5b9ddaaeac288a7ed /include/net/route.h | |
| parent | f1ce3062c53809d862d8a04e7a0566c3cc4e0bda (diff) | |
| download | blackbird-op-linux-f8126f1d5136be1ca1a3536d43ad7a710b5620f8.tar.gz blackbird-op-linux-f8126f1d5136be1ca1a3536d43ad7a710b5620f8.zip | |
ipv4: Adjust semantics of rt->rt_gateway.
In order to allow prefixed routes, we have to adjust how rt_gateway
is set and interpreted.
The new interpretation is:
1) rt_gateway == 0, destination is on-link, nexthop is iph->daddr
2) rt_gateway != 0, destination requires a nexthop gateway
Abstract the fetching of the proper nexthop value using a new
inline helper, rt_nexthop(), as suggested by Joe Perches.
Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Diffstat (limited to 'include/net/route.h')
| -rw-r--r-- | include/net/route.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/route.h b/include/net/route.h index 6d111bceb160..3c1eeab9749b 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -70,6 +70,13 @@ static inline bool rt_is_output_route(const struct rtable *rt) return rt->rt_route_iif == 0; } +static inline __be32 rt_nexthop(const struct rtable *rt, __be32 daddr) +{ + if (rt->rt_gateway) + return rt->rt_gateway; + return daddr; +} + struct ip_rt_acct { __u32 o_bytes; __u32 o_packets; |
