ct: fix "ct l3proto/protocol" syntax broken

"l3proto" and "protocol" are still keywords in our grammer, they are not
STRING, so if the user input the following rule, nft will complain that
the syntax is error:
  # nft add t c ct l3proto ipv4
  <cmdline>:1:12-18: Error: syntax error, unexpected l3proto, expecting
  string or mark or packets or bytes
  add t c ct l3proto ipv4
             ^^^^^^^

Fixes: c992153402c7 ("ct: allow resolving ct keys at run time")
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>

diff --git a/src/parser_bison.y b/src/parser_bison.y
index 106df2710104d3c1bf7ec1df65a6bef527527d9a..fa5de0c2ea797a54b5b11252a159cd371c7824ce 100644 (file)
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -2629,7 +2629,9 @@ ct_expr                   :       CT      ct_key
                        }
                        ;
 
-ct_key                 :       MARK            { $$ = NFT_CT_MARK; }
+ct_key                 :       L3PROTOCOL      { $$ = NFT_CT_L3PROTOCOL; }
+                       |       PROTOCOL        { $$ = NFT_CT_PROTOCOL; }
+                       |       MARK            { $$ = NFT_CT_MARK; }
                        |       ct_key_counters
                        ;
 ct_key_dir             :       SADDR           { $$ = NFT_CT_SRC; }