Re: [dpdk-dev] [PATCH] testpmd: fix fdir command on MAC and tunnel modes

["Wu, Jingjing" <jingjing.wu@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Frederico.Cadete-
> ext@oneaccess-net.com
> Sent: Tuesday, August 23, 2016 5:11 PM
> To: dev@dpdk.org
> Cc: frederico@cadete.eu; Frederico Cadete
> Subject: [dpdk-dev] [PATCH] testpmd: fix fdir command on MAC and tunnel
> modes
> 
> From: Frederico Cadete <Frederico.Cadete-ext@oneaccess-net.com>
> 
> The flow_director_filter commands has a pf|vf option for most modes
> except for MAC-VLAN and tunnel. On Intel NIC's these modes are not
> supported under virtualized environments.
> But the application was checking that this field was parsed for these cases,
> even though this token is not registered with the cmdline parser.
> 
> This patch skips checking of this field for the commands that don't accept it.
> 
> Signed-off-by: Frederico Cadete <Frederico.Cadete-ext@oneaccess-net.com>
> ---
>  app/test-pmd/cmdline.c | 32 ++++++++++++++++++--------------
>  1 file changed, 18 insertions(+), 14 deletions(-)
> 
> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c index
> f90befc..f516b1b 100644
> --- a/app/test-pmd/cmdline.c
> +++ b/app/test-pmd/cmdline.c
> @@ -8502,24 +8502,28 @@ cmd_flow_director_filter_parsed(void
> *parsed_result,
>  	else
>  		entry.action.behavior = RTE_ETH_FDIR_ACCEPT;
> 
> -	if (!strcmp(res->pf_vf, "pf"))
> -		entry.input.flow_ext.is_vf = 0;
> -	else if (!strncmp(res->pf_vf, "vf", 2)) {
> -		struct rte_eth_dev_info dev_info;
> +	if (fdir_conf.mode !=  RTE_FDIR_MODE_PERFECT_MAC_VLAN &&
> +	    fdir_conf.mode !=  RTE_FDIR_MODE_PERFECT_TUNNEL){
> 
> -		memset(&dev_info, 0, sizeof(dev_info));
> -		rte_eth_dev_info_get(res->port_id, &dev_info);
> -		errno = 0;
> -		vf_id = strtoul(res->pf_vf + 2, &end, 10);
> -		if (errno != 0 || *end != '\0' || vf_id >= dev_info.max_vfs) {
> +		if (!strcmp(res->pf_vf, "pf"))
> +			entry.input.flow_ext.is_vf = 0;
> +		else if (!strncmp(res->pf_vf, "vf", 2)) {
> +			struct rte_eth_dev_info dev_info;
> +
> +			memset(&dev_info, 0, sizeof(dev_info));
> +			rte_eth_dev_info_get(res->port_id, &dev_info);
> +			errno = 0;
> +			vf_id = strtoul(res->pf_vf + 2, &end, 10);
> +			if (errno != 0 || *end != '\0' || vf_id >=
> dev_info.max_vfs) {
> +				printf("invalid parameter %s.\n", res->pf_vf);
> +				return;
> +			}
> +			entry.input.flow_ext.is_vf = 1;
> +			entry.input.flow_ext.dst_id = (uint16_t)vf_id;
> +		} else {
>  			printf("invalid parameter %s.\n", res->pf_vf);
>  			return;
>  		}
> -		entry.input.flow_ext.is_vf = 1;
> -		entry.input.flow_ext.dst_id = (uint16_t)vf_id;
> -	} else {
> -		printf("invalid parameter %s.\n", res->pf_vf);
> -		return;
>  	}

Thanks for the patch. But with this change the field of pf_vf cannot omit either.
I think it still looks confused because it will allow any meaningless string. In 
MAC_VLAN or TUNNEL mode, why not just use pf.

Maybe an optional field supporting on DPDK cmdline library is exactly what we
Are waiting for :)   


Thanks
Jingjing