[v2] net/i40e: fix offload flag checking in simple Tx datapath

Tx offload flags 'PKT_TX_IPV6, PKT_TX_IPV4, PKT_TX_OUTER_IPV6,
PKT_TX_OUTER_IPV4' are supported in simple datapath.

This patch removes these offload flags from packet checking in simple
Tx datapath and defines 2 macro I40E_TX_OFFLOAD_SIMPLE_SUP_MASK
and I40E_TX_OFFLOAD_SIMPLE_NOTSUP_MASK.

Fixes: 146ffa81d05e ("net/i40e: add Tx preparation for simple Tx datapath")
Cc: stable@dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
---
 drivers/net/i40e/i40e_rxtx.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
  

> -----Original Message-----
> From: Zhang, AlvinX <alvinx.zhang@intel.com>
> Sent: Tuesday, May 11, 2021 10:39 AM
> To: Xing, Beilei <beilei.xing@intel.com>; Rong, Leyi <leyi.rong@intel.com>
> Cc: dev@dpdk.org; Zhang, AlvinX <alvinx.zhang@intel.com>; stable@dpdk.org
> Subject: [PATCH v2] net/i40e: fix offload flag checking in simple Tx datapath
> 
> Tx offload flags 'PKT_TX_IPV6, PKT_TX_IPV4, PKT_TX_OUTER_IPV6,
> PKT_TX_OUTER_IPV4' are supported in simple datapath.
> 
> This patch removes these offload flags from packet checking in simple Tx
> datapath and defines 2 macro I40E_TX_OFFLOAD_SIMPLE_SUP_MASK and
> I40E_TX_OFFLOAD_SIMPLE_NOTSUP_MASK.
> 
> Fixes: 146ffa81d05e ("net/i40e: add Tx preparation for simple Tx datapath")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
> ---
>  drivers/net/i40e/i40e_rxtx.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index
> 02cf5e7..337916b 100644
> --- a/drivers/net/i40e/i40e_rxtx.c
> +++ b/drivers/net/i40e/i40e_rxtx.c
> @@ -72,6 +72,15 @@
>  #define I40E_TX_OFFLOAD_NOTSUP_MASK \
>  		(PKT_TX_OFFLOAD_MASK ^ I40E_TX_OFFLOAD_MASK)
> 
> +#define I40E_TX_OFFLOAD_SIMPLE_SUP_MASK ( \
> +		PKT_TX_IPV4 | \
> +		PKT_TX_IPV6 | \
> +		PKT_TX_OUTER_IPV4 | \
> +		PKT_TX_OUTER_IPV6)
> +
> +#define I40E_TX_OFFLOAD_SIMPLE_NOTSUP_MASK \
> +		(PKT_TX_OFFLOAD_MASK &
> ~I40E_TX_OFFLOAD_SIMPLE_SUP_MASK)

Hi Alvin,

Better to use ^ oprand here, think about the situation when setting a flag in I40E_TX_OFFLOAD_SIMPLE_SUP_MASK but not in the PKT_TX_OFFLOAD_MASK, the result is going to be unexpected.

> +
>  int
>  i40e_get_monitor_addr(void *rx_queue, struct rte_power_monitor_cond *pmc)
> { @@ -1501,7 +1510,7 @@
>  			return i;
>  		}
> 
> -		if (ol_flags & PKT_TX_OFFLOAD_MASK) {
> +		if (ol_flags & I40E_TX_OFFLOAD_SIMPLE_NOTSUP_MASK) {
>  			rte_errno = ENOTSUP;
>  			return i;
>  		}
> --
> 1.8.3.1