evaluate: error out on meter overlap with an existing set/map declaration

One of the problems with meters is that they use the set/map
infrastructure behind the scenes which might be confusing to users.

This patch errors out in case user declares a meter whose name overlaps
with an existing set/map:

meter.nft:15:18-91: Error: File exists; meter ‘syn4-meter’ overlaps an existing set ‘syn4-meter’ in family inet
    tcp dport 22 meter syn4-meter { ip  saddr . tcp dport timeout 5m limit rate 20/minute } counter accept
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

An old 5.10 kernel bails out simply with EEXIST, with this patch a
better hint is provided.

Dynamic sets are preferred over meters these days.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions