[PATCH] net/iavf: fix checksum offloading

[Eelco Chaudron]

On 18 Aug 2023, at 11:03, David Marchand wrote:

> The only presence of RTE_MBUF_F_TX_IPV4 can't be used as an indicator
> that a checksum offload has been requested by an application.
> Check that RTE_MBUF_F_TX_IP_CKSUM or others flags have been set.
>
> Fixes: 1e728b01120c ("net/iavf: rework Tx path")
> Cc: stable at dpdk.org

Thanks for fixing this David! I tested and reviewed this change and it works now.

Tested-by: Eelco Chaudron <echaudro at redhat.com>
Acked-by: Eelco Chaudron <echaudro at redhat.com>

> Signed-off-by: David Marchand <david.marchand at redhat.com>
> ---
>  drivers/net/iavf/iavf_rxtx.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
> index f7df4665d1..b9e2879764 100644
> --- a/drivers/net/iavf/iavf_rxtx.c
> +++ b/drivers/net/iavf/iavf_rxtx.c
> @@ -2652,6 +2652,9 @@ iavf_build_data_desc_cmd_offset_fields(volatile uint64_t *qw1,
>  		offset |= (m->l2_len >> 1)
>  			<< IAVF_TX_DESC_LENGTH_MACLEN_SHIFT;
>
> +	if ((m->ol_flags & IAVF_TX_CKSUM_OFFLOAD_MASK) == 0)
> +		goto skip_cksum;
> +
>  	/* Enable L3 checksum offloading inner */
>  	if (m->ol_flags & RTE_MBUF_F_TX_IP_CKSUM) {
>  		if (m->ol_flags & RTE_MBUF_F_TX_IPV4) {
> @@ -2702,6 +2705,7 @@ iavf_build_data_desc_cmd_offset_fields(volatile uint64_t *qw1,
>  		break;
>  	}
>
> +skip_cksum:
>  	*qw1 = rte_cpu_to_le_64((((uint64_t)command <<
>  		IAVF_TXD_DATA_QW1_CMD_SHIFT) & IAVF_TXD_DATA_QW1_CMD_MASK) |
>  		(((uint64_t)offset << IAVF_TXD_DATA_QW1_OFFSET_SHIFT) &
> -- 
> 2.41.0