1 files changed, 122 insertions, 0 deletions
diff --git a/package/network/utils/nftables/patches/202-src-delete-flowtable.patch b/package/network/utils/nftables/patches/202-src-delete-flowtable.patch
new file mode 100644
index 0000000000..32b7f96bc5
--- /dev/null
+++ b/package/network/utils/nftables/patches/202-src-delete-flowtable.patch
@@ -0,0 +1,122 @@
+From: Pablo Neira Ayuso <pablo@netfilter.org>
+Date: Fri, 19 Jan 2018 01:41:38 +0100
+Subject: [PATCH] src: delete flowtable
+
+This patch allows you to delete an existing flowtable:
+
+ # nft delete flowtable x m
+
+Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
+---
+
+--- a/include/mnl.h
++++ b/include/mnl.h
+@@ -95,6 +95,9 @@ mnl_nft_flowtable_dump(struct netlink_ct
+ int mnl_nft_flowtable_batch_add(struct nftnl_flowtable *flo,
+ 				struct nftnl_batch *batch, unsigned int flags,
+ 				uint32_t seqnum);
++int mnl_nft_flowtable_batch_del(struct nftnl_flowtable *flow,
++				struct nftnl_batch *batch, unsigned int flags,
++				uint32_t seqnum);
+ 
+ struct nftnl_ruleset *mnl_nft_ruleset_dump(struct netlink_ctx *ctx,
+ 					   uint32_t family);
+--- a/include/netlink.h
++++ b/include/netlink.h
+@@ -186,6 +186,9 @@ extern int netlink_list_flowtables(struc
+ extern int netlink_add_flowtable(struct netlink_ctx *ctx,
+ 				 const struct handle *h, struct flowtable *ft,
+ 				 uint32_t flags);
++extern int netlink_delete_flowtable(struct netlink_ctx *ctx,
++				    const struct handle *h,
++				    struct location *loc);
+ 
+ extern void netlink_dump_chain(const struct nftnl_chain *nlc,
+ 			       struct netlink_ctx *ctx);
+--- a/src/evaluate.c
++++ b/src/evaluate.c
+@@ -3121,6 +3121,7 @@ static int cmd_evaluate_delete(struct ev
+ 	case CMD_OBJ_RULE:
+ 	case CMD_OBJ_CHAIN:
+ 	case CMD_OBJ_TABLE:
++	case CMD_OBJ_FLOWTABLE:
+ 	case CMD_OBJ_COUNTER:
+ 	case CMD_OBJ_QUOTA:
+ 	case CMD_OBJ_CT_HELPER:
+--- a/src/mnl.c
++++ b/src/mnl.c
+@@ -1027,6 +1027,22 @@ int mnl_nft_flowtable_batch_add(struct n
+ 	return 0;
+ }
+ 
++int mnl_nft_flowtable_batch_del(struct nftnl_flowtable *flo,
++				struct nftnl_batch *batch, unsigned int flags,
++				uint32_t seqnum)
++{
++	struct nlmsghdr *nlh;
++
++	nlh = nftnl_nlmsg_build_hdr(nftnl_batch_buffer(batch),
++				    NFT_MSG_DELFLOWTABLE,
++				    nftnl_flowtable_get_u32(flo, NFTNL_FLOWTABLE_FAMILY),
++				    flags, seqnum);
++	nftnl_flowtable_nlmsg_build_payload(nlh, flo);
++	mnl_nft_batch_continue(batch);
++
++	return 0;
++}
++
+ /*
+  * ruleset
+  */
+--- a/src/netlink.c
++++ b/src/netlink.c
+@@ -1831,6 +1831,24 @@ int netlink_add_flowtable(struct netlink
+ 	return err;
+ }
+ 
++int netlink_delete_flowtable(struct netlink_ctx *ctx, const struct handle *h,
++			     struct location *loc)
++{
++	struct nftnl_flowtable *flo;
++	int err;
++
++	flo = alloc_nftnl_flowtable(h, NULL);
++	netlink_dump_flowtable(flo, ctx);
++
++	err = mnl_nft_flowtable_batch_del(flo, ctx->batch, 0, ctx->seqnum);
++	if (err < 0)
++		netlink_io_error(ctx, loc, "Could not delete flowtable: %s",
++				 strerror(errno));
++	nftnl_flowtable_free(flo);
++
++	return err;
++}
++
+ static int list_obj_cb(struct nftnl_obj *nls, void *arg)
+ {
+ 	struct netlink_ctx *ctx = arg;
+--- a/src/parser_bison.y
++++ b/src/parser_bison.y
+@@ -1024,6 +1024,10 @@ delete_cmd		:	TABLE		table_spec
+ 			{
+ 				$$ = cmd_alloc(CMD_DELETE, CMD_OBJ_SETELEM, &$2, &@$, $3);
+ 			}
++			|	FLOWTABLE	flowtable_spec
++			{
++				$$ = cmd_alloc(CMD_DELETE, CMD_OBJ_FLOWTABLE, &$2, &@$, NULL);
++			}
+ 			|	COUNTER		obj_spec
+ 			{
+ 				$$ = cmd_alloc(CMD_DELETE, CMD_OBJ_COUNTER, &$2, &@$, NULL);
+--- a/src/rule.c
++++ b/src/rule.c
+@@ -1177,6 +1177,9 @@ static int do_command_delete(struct netl
+ 	case CMD_OBJ_LIMIT:
+ 		return netlink_delete_obj(ctx, &cmd->handle, &cmd->location,
+ 					  NFT_OBJECT_LIMIT);
++	case CMD_OBJ_FLOWTABLE:
++		return netlink_delete_flowtable(ctx, &cmd->handle,
++						&cmd->location);
+ 	default:
+ 		BUG("invalid command object type %u\n", cmd->obj);
+ 	}