Since old structures had _value as the last field,
every table match required 3 cache lines instead of 2.
Fix this by
- using the fact that supplied masks are suplicated inside radix
- using lightweigth sa_in6 structure as key for IPv6
Before (amd64):
sizeof(table_entry): 136
sizeof(table_xentry): 160
After (amd64):
sizeof(radix_cidr_entry): 120
sizeof(radix_cidr_xentry): 128
sizeof(radix_iface): 128
* Fix memory leak for table entry update
* Do some more sanity checks while deleting entry
* Do not store masks for host routes
Sponsored by: Yandex LLC
e0a8b9ee29