[dpdk-dev] [PATCH v8 2/4] ethdev: Fill speed capability bitmaps in the PMDs

[Chen, Jing D]

Hi, Marc,

Best Regards,
Mark

> -----Original Message-----
> From: Nélio Laranjeiro [mailto:nelio.laranjeiro at 6wind.com]
> Sent: Monday, February 15, 2016 4:43 PM
> To: Marc Sune
> Cc: dev at dpdk.org; Lu, Wenzhuo; Zhang, Helin; Harish Patil; Chen, Jing D
> Subject: Re: [dpdk-dev] [PATCH v8 2/4] ethdev: Fill speed capability bitmaps
> in the PMDs
> 
> On Sun, Feb 14, 2016 at 11:17:37PM +0100, Marc Sune wrote:
> > Added speed capabilities to all pmds supporting physical NICs:
> >
> > * e1000
> > * ixgbe
> > * i40
> > * bnx2x
> > * cxgbe
> > * mlx4
> > * mlx5
> > * nfp
> > * fm10k
> >[...]
> > diff --git a/drivers/net/mlx5/mlx5_ethdev.c
> b/drivers/net/mlx5/mlx5_ethdev.c
> > index 1159fa3..99dac09 100644
> > --- a/drivers/net/mlx5/mlx5_ethdev.c
> > +++ b/drivers/net/mlx5/mlx5_ethdev.c
> > @@ -523,6 +523,11 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev,
> struct rte_eth_dev_info *info)
> >  	 * size if it is not fixed.
> >  	 * The API should be updated to solve this problem. */
> >  	info->reta_size = priv->ind_table_max_size;
> > +
> > +	info->speed_capa = ETH_SPEED_CAP_1G | ETH_SPEED_CAP_10G |
> > +					ETH_SPEED_CAP_10G |
> ETH_SPEED_CAP_40G |
> > +					ETH_SPEED_CAP_56G;
> > +
> >  	priv_unlock(priv);
> >  }
> 
> Hi Marc,
> 
> I have a question about this information, is it a list of the
> capabilities of the family or the capability of the NIC?
> Because with ConnectX4 family we have a range of NICs which does not
> support all this kind of speeds.
> 
> The speeds above are not completed the range is 1/10/25/40/50/100G.
> 

Fm10k also includes several cards and different ones are designed to have different speed.
A better solution for fm10k is to acquire NIC type (like, BR card for 100G/40G, Atwood for 25/10G, etc)
Then, return proper speed.

> --
> Nélio Laranjeiro
> 6WIND