[PATCH nft 3/9] src: allow listing all ct helpers

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this implements
nft list ct helpers table filter
table ip filter {
    ct helper ftp-standard {
..

Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
---
 include/rule.h     |  1 +
 src/evaluate.c     |  1 +
 src/parser_bison.y | 19 +++++++++++++++++++
 src/rule.c         |  2 ++
 4 files changed, 23 insertions(+)

diff --git a/include/rule.h b/include/rule.h
index d89a963dfd05..b791cc0a497c 100644
--- a/include/rule.h
+++ b/include/rule.h
@@ -370,6 +370,7 @@ enum cmd_obj {
 	CMD_OBJ_COUNTERS,
 	CMD_OBJ_QUOTA,
 	CMD_OBJ_QUOTAS,
+	CMD_OBJ_CT_HELPERS,
 };
 
 struct export {
diff --git a/src/evaluate.c b/src/evaluate.c
index ae30bc9bb3b9..20f67ee784dd 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -3023,6 +3023,7 @@ static int cmd_evaluate_list(struct eval_ctx *ctx, struct cmd *cmd)
 		return cmd_evaluate_list_obj(ctx, cmd, NFT_OBJECT_COUNTER);
 	case CMD_OBJ_COUNTERS:
 	case CMD_OBJ_QUOTAS:
+	case CMD_OBJ_CT_HELPERS:
 		if (cmd->handle.table == NULL)
 			return 0;
 		if (table_lookup(&cmd->handle) == NULL)
diff --git a/src/parser_bison.y b/src/parser_bison.y
index 664f38ee6a4b..4d2b62438eeb 100644
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -1016,6 +1016,25 @@ list_cmd		:	TABLE		table_spec
 			{
 				$$ = cmd_alloc(CMD_LIST, CMD_OBJ_MAP, &$2, &@$, NULL);
 			}
+			|       CT              STRING  TABLE   table_spec
+			{
+				int cmd;
+
+				if (strcmp($2, "helpers") == 0) {
+					cmd = CMD_OBJ_CT_HELPERS;
+				} else {
+					struct error_record *erec;
+
+					erec = error(&@$, "unknown ct class '%s', want 'helpers'", $2);
+
+					if (erec != NULL) {
+						erec_queue(erec, state->msgs);
+						YYERROR;
+					}
+				}
+
+				$$ = cmd_alloc(CMD_LIST, cmd, &$4, &@$, NULL);
+			}
 			;
 
 reset_cmd		:	COUNTERS	ruleset_spec
diff --git a/src/rule.c b/src/rule.c
index abb6e1466441..6bffaa3eb63b 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -1469,6 +1469,8 @@ static int do_command_list(struct netlink_ctx *ctx, struct cmd *cmd)
 	case CMD_OBJ_QUOTA:
 	case CMD_OBJ_QUOTAS:
 		return do_list_obj(ctx, cmd, NFT_OBJECT_QUOTA);
+	case CMD_OBJ_CT_HELPERS:
+		return do_list_obj(ctx, cmd, NFT_OBJECT_CT_HELPER);
 	default:
 		BUG("invalid command object type %u\n", cmd->obj);
 	}
-- 
2.10.2

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