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authorjoerg <joerg@NetBSD.org>2006-12-15 21:18:52 +0000
committerjoerg <joerg@NetBSD.org>2006-12-15 21:18:52 +0000
commiteb04733c4ebdaf6e80235c9dc053099d24810e5a (patch)
tree8d687ff17ec5c81d94e277523ad2daf72c07db75 /sys/dev/microcode
parent581e519fb57dafe1505e770f37af3b605638d0c6 (diff)
Introduce new helper functions to abstract the route caching.
rtcache_init and rtcache_init_noclone lookup ro_dst and store the result in ro_rt, taking care of the reference counting and calling the domain specific route cache. rtcache_free checks if a route was cashed and frees the reference. rtcache_copy copies ro_dst of the given struct route, checking that enough space is available and incrementing the reference count of the cached rtentry if necessary. rtcache_check validates that the cached route is still up. If it isn't, it tries to look it up again. Afterwards ro_rt is either a valid again or NULL. rtcache_copy is used internally. Adjust to callers of rtalloc/rtflush in the tree to check the sanity of ro_dst first (if necessary). If it doesn't fit the expectations, free the cache, otherwise check if the cached route is still valid. After that combination, a single check for ro_rt == NULL is enough to decide whether a new lookup needs to be done with a different ro_dst. Make the route checking in gre stricter by repeating the loop check after revalidation. Remove some unused RADIX_MPATH code in in6_src.c. The logic is slightly changed here to first validate the route and check RTF_GATEWAY afterwards. This is sementically equivalent though. etherip doesn't need sc_route_expire similiar to the gif changes from dyoung@ earlier. Based on the earlier patch from dyoung@, reviewed and discussed with him.
Diffstat (limited to 'sys/dev/microcode')
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