src: add --define key=value

This patch adds a new option to define variables from the command line.

 # cat test.nft
 table netdev x {
        chain y {
                type filter hook ingress devices = $dev priority 0;
                counter accept
        }
 }
 # nft --define dev="{ eth0, eth1 }" -f test.nft

You can only combine it with -f/--filename.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/shell/testcases/nft-f/dumps/0028variable_cmdline_0.nft b/tests/shell/testcases/nft-f/dumps/0028variable_cmdline_0.nft
new file mode 100644
index 00000000..aa081122
--- /dev/null
+++ b/tests/shell/testcases/nft-f/dumps/0028variable_cmdline_0.nft
@@ -0,0 +1,8 @@
+table inet filter {
+	set whitelist_v4 {
+		type ipv4_addr
+		elements = { 1.1.1.1, 2.2.2.2,
+			     3.3.3.3, 4.4.4.4,
+			     5.5.5.5 }
+	}
+}