[dpdk-dev] [PATCH v3] net/mlx4: support CRC strip toggling

[Adrien Mazarguil]

On Sun, Mar 25, 2018 at 08:19:29PM +0000, Ophir Munk wrote:
> Previous to this commit mlx4 CRC stripping was executed by default and
> there was no verbs API to disable it.
> 
> Signed-off-by: Ophir Munk <ophirmu at mellanox.com>
> ---
> v1: initial version
> v2: following internal reviews
> v3: following dpdk.org mailing list reviews

Except for the remaining extra space mentioned below :)

Acked-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>

<snip>
> diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
> index ee93daf..eea6e93 100644
> --- a/drivers/net/mlx4/mlx4.c
> +++ b/drivers/net/mlx4/mlx4.c
> @@ -562,7 +562,7 @@ mlx4_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
>  			(device_attr.vendor_part_id ==
>  			 PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO);
>  		DEBUG("L2 tunnel checksum offloads are %ssupported",
> -		      (priv->hw_csum_l2tun ? "" : "not "));
> +		      priv->hw_csum_l2tun ? "" : "not ");
>  		priv->hw_rss_sup = device_attr_ex.rss_caps.rx_hash_fields_mask;
>  		if (!priv->hw_rss_sup) {
>  			WARN("no RSS capabilities reported; disabling support"
> @@ -578,6 +578,10 @@ mlx4_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
>  		}
>  		DEBUG("supported RSS hash fields mask: %016" PRIx64,
>  		      priv->hw_rss_sup);
> +		priv->hw_fcs_strip = !!(device_attr_ex.raw_packet_caps &
> +					 IBV_RAW_PACKET_CAP_SCATTER_FCS);

I know the extra space before IBV_RAW_PACKET_CAP_SCATTER_FCS is present in
the original mlx5 code, but it's misaligned there also. This line should be
aligned with "device_attr_ex.raw_packet_caps" for consistency.

-- 
Adrien Mazarguil
6WIND