src: add set element catch-all support

Add a catchall expression (EXPR_SET_ELEM_CATCHALL).

Use the asterisk (*) to represent the catch-all set element, e.g.

 table x {
     set y {
	type ipv4_addr
	counter
	elements = { 1.2.3.4 counter packets 0 bytes 0, * counter packets 0 bytes 0 }
     }
 }

Special handling for segtree: zap the catch-all element from the set
element list and re-add it after processing.

Remove wildcard_expr deadcode in src/parser_bison.y

This patch also adds several tests for the tests/py and tests/shell
infrastructures.

Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/shell/testcases/sets/0063set_catchall_0 b/tests/shell/testcases/sets/0063set_catchall_0
new file mode 100755
index 00000000..faca56a1
--- /dev/null
+++ b/tests/shell/testcases/sets/0063set_catchall_0
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -e
+
+RULESET="table ip x {
+	set y {
+		type ipv4_addr
+		counter
+		elements = { 1.1.1.1, * }
+	}
+	set z {
+		type ipv4_addr
+		flags interval
+		counter
+		elements = { 1.1.1.0/24 , * }
+	}
+}"
+
+$NFT -f - <<< $RULESET
+$NFT delete element x y { \* }
+$NFT add element x y { \* }