netdev - Re: [PATCH net-next v5 3/5] devlink: Introduce PCI PF port flavour and port attribute

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Date:   Mon, 8 Jul 2019 14:14:03 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Parav Pandit <parav@...lanox.com>
Cc:     netdev@...r.kernel.org, jiri@...lanox.com, saeedm@...lanox.com
Subject: Re: [PATCH net-next v5 3/5] devlink: Introduce PCI PF port flavour
 and port attribute

On Sun,  7 Jul 2019 23:15:47 -0500, Parav Pandit wrote:
> diff --git a/net/core/devlink.c b/net/core/devlink.c
> index 3e5f8204c36f..88b2cf207cb2 100644
> --- a/net/core/devlink.c
> +++ b/net/core/devlink.c
> @@ -519,6 +519,11 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg,
>  	if (devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_PHYSICAL &&
>  	    devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
>  	    devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA)
>  		return 0;
> +	if (devlink_port->attrs.flavour == DEVLINK_PORT_FLAVOUR_PCI_PF) {

Thanks for making the changes!  I'm not sure how this would work, tho.
We return early if flavour is not phys/cpu/dsa, so how can flavour be
pci here?..

> +		if (nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER,
> +				attrs->pci_pf.pf))
> +			return -EMSGSIZE;
> +	}
>  	if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
>  			attrs->physical.port_number))
>  		return -EMSGSIZE;