odp-util: Fix reporting unknown keys as keys with bad length.

check_attr_len() currently reports all unknown keys as keys with bad
length.  For example, IPv6 extension headers are printed out like this
in flow dumps:

  eth_type(0x86dd),ipv6(...)
  (bad key length 2, expected -1)(00 00/(bad mask length 2, expected -1)(00 00),
  icmpv6(type=0/0,code=0/0)

However, since the key is unknown, the length check on it makes no
sense and should be ignored.  This will allow the unknown key to be
caught later by the format_unknown_key() function and printed in a
more user-friendly way:

  eth_type(0x86dd),ipv6(...),key32(00 00/00 00),icmpv6(type=0/0,code=0/0)

'32' here is the actual index of the key attribute, so we know
that it is unknown attribute #32 with the value/mask pair printed
out inside the parenthesis.

Acked-by: Aaron Conole <aconole@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>

0 files changed, 0 insertions, 0 deletions