src: add support to flush sets

You can use this new command to remove all existing elements in a set:

 # nft flush set filter xyz

After this command, the set 'xyz' in table 'filter' becomes empty.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/src/rule.c b/src/rule.c
index 8710767b..f1bb6cfe 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -1244,6 +1244,9 @@ static int do_command_flush(struct netlink_ctx *ctx, struct cmd *cmd)
 		return netlink_flush_table(ctx, &cmd->handle, &cmd->location);
 	case CMD_OBJ_CHAIN:
 		return netlink_flush_chain(ctx, &cmd->handle, &cmd->location);
+	case CMD_OBJ_SET:
+		return netlink_flush_setelems(ctx, &cmd->handle,
+					      &cmd->location);
 	case CMD_OBJ_RULESET:
 		return netlink_flush_ruleset(ctx, &cmd->handle, &cmd->location);
 	default: