parser_bison: delete chain via chain handle

This patch allows deletion of chains via unique chain handles which
can be listed with '-a' option and table name and family.
For eg.

nft delete chain [<family>] <table-name> [handle <handle>]

Signed-off-by: Harsha Sharma <harshasharmaiitr@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/src/parser_bison.y b/src/parser_bison.y
index 49269b7b2c9e39d1be5bb5c99e66e4934700e146..dd0dcc512e51737c8703eca02f718b2a4a6085b9 100644 (file)
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -507,8 +507,8 @@ int nft_lex(void *, void *, void *);
 %type <cmd>                    base_cmd add_cmd replace_cmd create_cmd insert_cmd delete_cmd list_cmd reset_cmd flush_cmd rename_cmd export_cmd monitor_cmd describe_cmd import_cmd
 %destructor { cmd_free($$); }  base_cmd add_cmd replace_cmd create_cmd insert_cmd delete_cmd list_cmd reset_cmd flush_cmd rename_cmd export_cmd monitor_cmd describe_cmd import_cmd
 
-%type <handle>                 table_spec tableid_spec chain_spec flowtable_spec chain_identifier ruleid_spec handle_spec position_spec rule_position ruleset_spec
-%destructor { handle_free(&$$); } table_spec tableid_spec chain_spec flowtable_spec chain_identifier ruleid_spec handle_spec position_spec rule_position ruleset_spec
+%type <handle>                 table_spec tableid_spec chain_spec chainid_spec flowtable_spec chain_identifier ruleid_spec handle_spec position_spec rule_position ruleset_spec
+%destructor { handle_free(&$$); } table_spec tableid_spec chain_spec chainid_spec flowtable_spec chain_identifier ruleid_spec handle_spec position_spec rule_position ruleset_spec
 %type <handle>                 set_spec set_identifier flowtable_identifier obj_spec obj_identifier
 %destructor { handle_free(&$$); } set_spec set_identifier obj_spec obj_identifier
 %type <val>                    family_spec family_spec_explicit chain_policy prio_spec
@@ -1036,6 +1036,10 @@ delete_cmd               :       TABLE           table_spec
                        {
                                $$ = cmd_alloc(CMD_DELETE, CMD_OBJ_CHAIN, &$2, &@$, NULL);
                        }
+                       |       CHAIN           chainid_spec
+                       {
+                               $$ = cmd_alloc(CMD_DELETE, CMD_OBJ_CHAIN, &$2, &@$, NULL);
+                       }
                        |       RULE            ruleid_spec
                        {
                                $$ = cmd_alloc(CMD_DELETE, CMD_OBJ_RULE, &$2, &@$, NULL);
@@ -1830,6 +1834,14 @@ chain_spec               :       table_spec      identifier
                        }
                        ;
 
+chainid_spec           :       table_spec      HANDLE NUM
+                       {
+                               $$                      = $1;
+                               $$.handle.location      = @$;
+                               $$.handle.id            = $3;
+                       }
+                       ;
+
 chain_identifier       :       identifier
                        {
                                memset(&$$, 0, sizeof($$));