src: add support for rule human-readable comments

This patch adds support for human-readable comments:

  nft add rule filter input accept comment \"accept all traffic\"

Note that comments *always* come at the end of the rule. This uses
the new data area that allows you to attach information to the rule
via netlink.

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 45c64763..47c5933c 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -258,6 +258,7 @@ addrstring	({macaddr}|{ip4addr}|{ip6addr})
 "export"		{ return EXPORT; }
 
 "position"		{ return POSITION; }
+"comment"		{ return COMMENT; }
 
 "constant"		{ return CONSTANT; }
 "interval"		{ return INTERVAL; }