Hi,

On 5/15/19 12:46 PM, Phil Sutter wrote:
> Hi,
> 
> On Tue, May 14, 2019 at 11:13:40PM +0200, Fernando Fernandez Mancera wrote:
>> This patch introduces the use of nft input files variables in 'jump' and 
>> 'goto'
>> statements, e.g.
>>
>> define dest = ber
>>
>> add table ip foo
>> add chain ip foo bar {type filter hook input priority 0;}
>> add chain ip foo ber
>> add rule ip foo ber counter
>> add rule ip foo bar jump $dest
>>
>> table ip foo {
>>      chain bar {
>>              type filter hook input priority filter; policy accept;
>>              jump ber
>>      }
>>
>>      chain ber {
>>              counter packets 71 bytes 6664
>>      }
>> }
>>
>> Signed-off-by: Fernando Fernandez Mancera <ffmanc...@riseup.net>
>> ---
>>  src/datatype.c     | 11 +++++++++++
>>  src/parser_bison.y |  6 +++++-
>>  2 files changed, 16 insertions(+), 1 deletion(-)
>>
>> diff --git a/src/datatype.c b/src/datatype.c
>> index 6aaf9ea..7e9ec5e 100644
>> --- a/src/datatype.c
>> +++ b/src/datatype.c
>> @@ -297,11 +297,22 @@ static void verdict_type_print(const struct expr 
>> *expr, struct output_ctx *octx)
>>      }
>>  }
>>  
>> +static struct error_record *verdict_type_parse(const struct expr *sym,
>> +                                           struct expr **res)
>> +{
>> +    *res = constant_expr_alloc(&sym->location, &string_type,
>> +                               BYTEORDER_HOST_ENDIAN,
>> +                               (strlen(sym->identifier) + 1) * 
>> BITS_PER_BYTE,
>> +                               sym->identifier);
>> +    return NULL;
>> +}
>> +
>>  const struct datatype verdict_type = {
>>      .type           = TYPE_VERDICT,
>>      .name           = "verdict",
>>      .desc           = "netfilter verdict",
>>      .print          = verdict_type_print,
>> +    .parse          = verdict_type_parse,
>>  };
>>  
>>  static const struct symbol_table nfproto_tbl = {
>> diff --git a/src/parser_bison.y b/src/parser_bison.y
>> index 69b5773..a955cb5 100644
>> --- a/src/parser_bison.y
>> +++ b/src/parser_bison.y
>> @@ -3841,7 +3841,11 @@ verdict_expr          :       ACCEPT
>>                      }
>>                      ;
>>  
>> -chain_expr          :       identifier
>> +chain_expr          :       variable_expr
>> +                    {
>> +                            $$ = $1;
>> +                    }
> 
> Are you sure this is needed? The provided code should be what bison does
> by default if no body was given.
> 

Yes, you are right! Thanks to point that. I am going to remove it in the
next patch series.

> Cheers, Phil
> 

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