src: add 'list maps' support

This commit adds a new command that lists maps:

  # nft list maps [family]

Only the declaration is displayed. If no family is specified, all maps
of all families are listed.

Example:

  # nft list maps

  table ip filter {
          map test {
                  type ipv4_addr : inet_service
          }
  }
  table ip6 filter {
          map test {
                  type ipv6_addr : inet_service
          }
  }

Signed-off-by: Pablo M. Bermudo Garay <pablombg@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/scanner.l b/src/scanner.l
index b0221145..88669d0e 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -245,6 +245,7 @@ addrstring	({macaddr}|{ip4addr}|{ip6addr})
 "set"			{ return SET; }
 "element"		{ return ELEMENT; }
 "map"			{ return MAP; }
+"maps"			{ return MAPS; }
 "handle"		{ return HANDLE; }
 "ruleset"		{ return RULESET; }