[PATCH v3 4/6] netfilter: ipset: Add bitmask support to hash:netnet

[Vishwanath Pai <vpai@xxxxxxxxxx>]

Create a new revision of hash:netnet and add support for bitmask
parameter. The set did not support netmask so we'll add both netmask and
bitmask.

Signed-off-by: Vishwanath Pai <vpai@xxxxxxxxxx>
Signed-off-by: Joshua Hunt <johunt@xxxxxxxxxx>
---
 lib/ipset_hash_netnet.c | 101 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

diff --git a/lib/ipset_hash_netnet.c b/lib/ipset_hash_netnet.c
index df993b8..0e176e3 100644
--- a/lib/ipset_hash_netnet.c
+++ b/lib/ipset_hash_netnet.c
@@ -387,6 +387,106 @@ static struct ipset_type ipset_hash_netnet3 = {
 	.description = "bucketsize, initval support",
 };
 
+/* bitmask support */
+static struct ipset_type ipset_hash_netnet4 = {
+	.name = "hash:net,net",
+	.alias = { "netnethash", NULL },
+	.revision = 4,
+	.family = NFPROTO_IPSET_IPV46,
+	.dimension = IPSET_DIM_TWO,
+	.elem = {
+		[IPSET_DIM_ONE - 1] = {
+			.parse = ipset_parse_ip4_net6,
+			.print = ipset_print_ip,
+			.opt = IPSET_OPT_IP
+		},
+		[IPSET_DIM_TWO - 1] = {
+			.parse = ipset_parse_ip4_net6,
+			.print = ipset_print_ip,
+			.opt = IPSET_OPT_IP2
+		},
+	},
+	.cmd = {
+		[IPSET_CREATE] = {
+			.args = {
+				IPSET_ARG_FAMILY,
+				/* Aliases */
+				IPSET_ARG_INET,
+				IPSET_ARG_INET6,
+				IPSET_ARG_HASHSIZE,
+				IPSET_ARG_MAXELEM,
+				IPSET_ARG_TIMEOUT,
+				IPSET_ARG_COUNTERS,
+				IPSET_ARG_COMMENT,
+				IPSET_ARG_FORCEADD,
+				IPSET_ARG_SKBINFO,
+				IPSET_ARG_BUCKETSIZE,
+				IPSET_ARG_INITVAL,
+				IPSET_ARG_BITMASK,
+				IPSET_ARG_NETMASK,
+				IPSET_ARG_NONE,
+			},
+			.need = 0,
+			.full = 0,
+			.help = "",
+		},
+		[IPSET_ADD] = {
+			.args = {
+				IPSET_ARG_TIMEOUT,
+				IPSET_ARG_NOMATCH,
+				IPSET_ARG_PACKETS,
+				IPSET_ARG_BYTES,
+				IPSET_ARG_ADT_COMMENT,
+				IPSET_ARG_SKBMARK,
+				IPSET_ARG_SKBPRIO,
+				IPSET_ARG_SKBQUEUE,
+				IPSET_ARG_NONE,
+			},
+			.need = IPSET_FLAG(IPSET_OPT_IP)
+				| IPSET_FLAG(IPSET_OPT_IP2),
+			.full = IPSET_FLAG(IPSET_OPT_IP)
+				| IPSET_FLAG(IPSET_OPT_CIDR)
+				| IPSET_FLAG(IPSET_OPT_IP_TO)
+				| IPSET_FLAG(IPSET_OPT_IP2)
+				| IPSET_FLAG(IPSET_OPT_CIDR2)
+				| IPSET_FLAG(IPSET_OPT_IP2_TO),
+			.help = "IP[/CIDR]|FROM-TO,IP[/CIDR]|FROM-TO",
+		},
+		[IPSET_DEL] = {
+			.args = {
+				IPSET_ARG_NONE,
+			},
+			.need = IPSET_FLAG(IPSET_OPT_IP)
+				| IPSET_FLAG(IPSET_OPT_IP2),
+			.full = IPSET_FLAG(IPSET_OPT_IP)
+				| IPSET_FLAG(IPSET_OPT_CIDR)
+				| IPSET_FLAG(IPSET_OPT_IP_TO)
+				| IPSET_FLAG(IPSET_OPT_IP2)
+				| IPSET_FLAG(IPSET_OPT_CIDR2)
+				| IPSET_FLAG(IPSET_OPT_IP2_TO),
+			.help = "IP[/CIDR]|FROM-TO,IP[/CIDR]|FROM-TO",
+		},
+		[IPSET_TEST] = {
+			.args = {
+				IPSET_ARG_NOMATCH,
+				IPSET_ARG_NONE,
+			},
+			.need = IPSET_FLAG(IPSET_OPT_IP)
+				| IPSET_FLAG(IPSET_OPT_IP2),
+			.full = IPSET_FLAG(IPSET_OPT_IP)
+				| IPSET_FLAG(IPSET_OPT_CIDR)
+				| IPSET_FLAG(IPSET_OPT_IP2)
+				| IPSET_FLAG(IPSET_OPT_CIDR2),
+			.help = "IP[/CIDR],IP[/CIDR]",
+		},
+	},
+	.usage = "where depending on the INET family\n"
+		 "      IP is an IPv4 or IPv6 address (or hostname),\n"
+		 "      CIDR is a valid IPv4 or IPv6 CIDR prefix.\n"
+		 "      IP range is not supported with IPv6.",
+	.description = "netmask and bitmask support",
+};
+
 void _init(void);
 void _init(void)
 {
@@ -394,4 +494,5 @@ void _init(void)
 	ipset_type_add(&ipset_hash_netnet1);
 	ipset_type_add(&ipset_hash_netnet2);
 	ipset_type_add(&ipset_hash_netnet3);
+	ipset_type_add(&ipset_hash_netnet4);
 }
-- 
2.25.1