src: add synproxy stateful object support

Add support for "synproxy" stateful object. For example (for TCP port 80 and
using maps with saddr):

table ip foo {
	synproxy https-synproxy {
		mss 1460
		wscale 7
		timestamp sack-perm
	}

	synproxy other-synproxy {
		mss 1460
		wscale 5
	}

	chain bar {
		tcp dport 80 synproxy name "https-synproxy"
		synproxy name ip saddr map { 192.168.1.0/24 : "https-synproxy", 192.168.2.0/24 : "other-synproxy" }
	}
}

Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
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 fdf84ba7..3de5a9e0 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -330,6 +330,7 @@ addrstring	({macaddr}|{ip4addr}|{ip6addr})
 "counters"		{ return COUNTERS; }
 "quotas"		{ return QUOTAS; }
 "limits"		{ return LIMITS; }
+"synproxys"		{ return SYNPROXYS; }
 
 "log"			{ return LOG; }
 "prefix"		{ return PREFIX; }