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net: ipv4: Add extack message for invalid prefix or length
authorDavid Ahern <dsahern@gmail.com>
Sat, 27 May 2017 22:19:26 +0000 (16:19 -0600)
committerDavid S. Miller <davem@davemloft.net>
Tue, 30 May 2017 15:55:31 +0000 (11:55 -0400)
commit78055998954b7a3e6c31eb24d1d26f0b63a7ec0d
treead1f4fd34da0b9faee5219a3490cbf729228ba96
parentba277e8e05dbd4aa13f74f859e276d5d54467eab
net: ipv4: Add extack message for invalid prefix or length

Add extack error message for invalid prefix length and invalid prefix.
Example of the latter is a route spec containing 172.16.100.1/24, where
the /24 mask means the lower 8-bits should be 0. Amazing how easy that
one is to overlook when an EINVAL is returned.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/ip_fib.h
net/ipv4/fib_frontend.c
net/ipv4/fib_trie.c