json: add flow statement json export + parser

flow statement has no export, its shown as:
".. }, "flow add @ft" ] } }"

With this patch:

".. }, {"flow": {"op": "add", "flowtable": "@ft"}}]}}"

Signed-off-by: Florian Westphal <fw@strlen.de>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/parser_json.c b/src/parser_json.c
index 2fad308f..f07b798a 100644
--- a/src/parser_json.c
+++ b/src/parser_json.c
@@ -1903,6 +1903,28 @@ out_err:
 	return NULL;
 }
 
+static struct stmt *json_parse_flow_offload_stmt(struct json_ctx *ctx,
+						 const char *key, json_t *value)
+{
+	const char *opstr, *flowtable;
+
+	if (json_unpack_err(ctx, value, "{s:s, s:s}",
+			    "op", &opstr, "flowtable", &flowtable))
+		return NULL;
+
+	if (strcmp(opstr, "add")) {
+		json_error(ctx, "Unknown flow offload statement op '%s'.", opstr);
+		return NULL;
+	}
+
+	if (flowtable[0] != '@') {
+		json_error(ctx, "Illegal flowtable reference in flow offload statement.");
+		return NULL;
+	}
+
+	return flow_offload_stmt_alloc(int_loc, xstrdup(flowtable + 1));
+}
+
 static struct stmt *json_parse_notrack_stmt(struct json_ctx *ctx,
 					const char *key, json_t *value)
 {
@@ -2647,6 +2669,7 @@ static struct stmt *json_parse_stmt(struct json_ctx *ctx, json_t *root)
 		{ "mangle", json_parse_mangle_stmt },
 		{ "quota", json_parse_quota_stmt },
 		{ "limit", json_parse_limit_stmt },
+		{ "flow", json_parse_flow_offload_stmt },
 		{ "fwd", json_parse_fwd_stmt },
 		{ "notrack", json_parse_notrack_stmt },
 		{ "dup", json_parse_dup_stmt },