groups: add attribute group API

This new API allows you to set and get some logical set of
attributes. This is not intended to replace the existing
per-attribute get/set API but to provide more efficient way
to get/set certain attributes. This change includes an example
file (conntrack_grp_create.c) of the use of the attribute group API.

See ATTR_GRP_* for more information on the existing groups.

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

1 files changed, 69 insertions, 0 deletions

diff --git a/src/conntrack/grp.c b/src/conntrack/grp.c
new file mode 100644
index 0000000..739f8c6
--- /dev/null
+++ b/src/conntrack/grp.c
@@ -0,0 +1,69 @@
+/*
+ * (C) 2008 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+
+#include "internal/internal.h"
+
+uint32_t attr_grp_bitmask[ATTR_GRP_MAX][__NFCT_BITSET] = {
+	[ATTR_GRP_ORIG_IPV4] = {
+		[0] = (1 << ATTR_ORIG_IPV4_SRC) |
+		      (1 << ATTR_ORIG_IPV4_DST) |
+		      (1 << ATTR_ORIG_L3PROTO),
+	},
+	[ATTR_GRP_REPL_IPV4] = {
+		[0] = (1 << ATTR_REPL_IPV4_SRC) |
+		      (1 << ATTR_REPL_IPV4_DST) |
+		      (1 << ATTR_REPL_L3PROTO),
+	},
+	[ATTR_GRP_ORIG_IPV6] = {
+		[0] = (1 << ATTR_ORIG_IPV6_SRC) |
+		      (1 << ATTR_ORIG_IPV6_DST) |
+		      (1 << ATTR_ORIG_L3PROTO),
+	},
+	[ATTR_GRP_REPL_IPV6] = {
+		[0] = (1 << ATTR_REPL_IPV6_SRC) |
+		      (1 << ATTR_REPL_IPV6_DST) |
+		      (1 << ATTR_REPL_L3PROTO),
+	},
+	[ATTR_GRP_ORIG_PORT] = {
+		[0] = (1 << ATTR_ORIG_PORT_SRC) |
+		      (1 << ATTR_ORIG_PORT_DST) |
+		      (1 << ATTR_ORIG_L4PROTO),
+	},
+	[ATTR_GRP_REPL_PORT] = {
+		[0] = (1 << ATTR_REPL_PORT_SRC) |
+		      (1 << ATTR_REPL_PORT_DST) |
+		      (1 << ATTR_REPL_L4PROTO),
+	},
+	[ATTR_GRP_ICMP] = {
+		[0] = (1 << ATTR_ICMP_CODE) |
+		      (1 << ATTR_ICMP_TYPE) |
+		      (1 << ATTR_ICMP_ID),
+	},
+	[ATTR_GRP_MASTER_IPV4] = {
+		[1] = (1 << (ATTR_MASTER_IPV4_SRC - 32)) |
+		      (1 << (ATTR_MASTER_IPV4_DST - 32)) |
+		      (1 << (ATTR_MASTER_L3PROTO - 32)),
+	},
+	[ATTR_GRP_MASTER_IPV6] = {
+		[1] = (1 << (ATTR_MASTER_IPV6_SRC - 32)) |
+		      (1 << (ATTR_MASTER_IPV6_DST - 32)) |
+		      (1 << (ATTR_MASTER_L3PROTO - 32)),
+	},
+	[ATTR_GRP_MASTER_PORT] = {
+		[1] = (1 << (ATTR_MASTER_PORT_SRC - 32)) |
+		      (1 << (ATTR_MASTER_PORT_DST - 32)) |
+		      (1 << (ATTR_MASTER_L4PROTO - 32)),
+	},
+	[ATTR_GRP_ORIG_COUNTERS] = {
+		[0] = (1 << (ATTR_ORIG_COUNTER_PACKETS)) |
+		      (1 << (ATTR_ORIG_COUNTER_BYTES)),
+	},
+	[ATTR_GRP_REPL_COUNTERS] = {
+		[0] = (1 << (ATTR_REPL_COUNTER_PACKETS)) |
+		      (1 << (ATTR_REPL_COUNTER_BYTES)),
+	},
+};