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Date:   Wed, 14 Mar 2018 03:04:46 +0000
From:   "Brown, Aaron F" <aaron.f.brown@...el.com>
To:     "Gomes, Vinicius" <vinicius.gomes@...el.com>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "Sanchez-Palencia, Jesus" <jesus.sanchez-palencia@...el.com>
Subject: RE: [Intel-wired-lan] [next-queue PATCH v4 6/8] igb: Add MAC
 address support for ethtool nftuple filters

> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@...osl.org] On
> Behalf Of Vinicius Costa Gomes
> Sent: Wednesday, March 7, 2018 4:37 PM
> To: intel-wired-lan@...ts.osuosl.org
> Cc: netdev@...r.kernel.org; Sanchez-Palencia, Jesus <jesus.sanchez-
> palencia@...el.com>
> Subject: [Intel-wired-lan] [next-queue PATCH v4 6/8] igb: Add MAC address
> support for ethtool nftuple filters
> 
> This adds the capability of configuring the queue steering of arriving
> packets based on their source and destination MAC addresses.
> 
> In practical terms this adds support for the following use cases,
> characterized by these examples:
> 
> $ ethtool -N eth0 flow-type ether dst aa:aa:aa:aa:aa:aa action 0
> (this will direct packets with destination address "aa:aa:aa:aa:aa:aa"
> to the RX queue 0)
> 
> $ ethtool -N eth0 flow-type ether src 44:44:44:44:44:44 action 3
> (this will direct packets with source address "44:44:44:44:44:44" to
> the RX queue 3)

This seems to work fine on i210, and the patch series allows me to set the rx filters on the i350, i354 and i211, but it is not directing the packets to the queue I request.

With the exception of i210 the rx_queues number does not seem to be effected by setting the filter.  In the case of i211 the rx packets stay on rx_queue 0 with or without an ether src or dst filter.  The first example one seems to work at first since it's directing to queue 0, but changing the filter to "action 1" does not change the behavior.  With the i350 and i354 ports the packets are spread across the rx_queues with or without the filter set.

> 
> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>
> ---
>  drivers/net/ethernet/intel/igb/igb_ethtool.c | 35
> ++++++++++++++++++++++++----
>  1 file changed, 31 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c
> b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> index 94fc9a4bed8b..3f98299d4cd0 100644
> --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
> +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> @@ -2494,6 +2494,23 @@ static int igb_get_ethtool_nfc_entry(struct
> igb_adapter *adapter,
>  			fsp->h_ext.vlan_tci = rule->filter.vlan_tci;
>  			fsp->m_ext.vlan_tci = htons(VLAN_PRIO_MASK);
>  		}
> +		if (rule->filter.match_flags &
> IGB_FILTER_FLAG_DST_MAC_ADDR) {
> +			ether_addr_copy(fsp->h_u.ether_spec.h_dest,
> +					rule->filter.dst_addr);
> +			/* As we only support matching by the full
> +			 * mask, return the mask to userspace
> +			 */
> +			eth_broadcast_addr(fsp->m_u.ether_spec.h_dest);
> +		}
> +		if (rule->filter.match_flags &
> IGB_FILTER_FLAG_SRC_MAC_ADDR) {
> +			ether_addr_copy(fsp->h_u.ether_spec.h_source,
> +					rule->filter.src_addr);
> +			/* As we only support matching by the full
> +			 * mask, return the mask to userspace
> +			 */
> +			eth_broadcast_addr(fsp-
> >m_u.ether_spec.h_source);
> +		}
> +
>  		return 0;
>  	}
>  	return -EINVAL;
> @@ -2932,10 +2949,6 @@ static int igb_add_ethtool_nfc_entry(struct
> igb_adapter *adapter,
>  	if ((fsp->flow_type & ~FLOW_EXT) != ETHER_FLOW)
>  		return -EINVAL;
> 
> -	if (fsp->m_u.ether_spec.h_proto != ETHER_TYPE_FULL_MASK &&
> -	    fsp->m_ext.vlan_tci != htons(VLAN_PRIO_MASK))
> -		return -EINVAL;
> -
>  	input = kzalloc(sizeof(*input), GFP_KERNEL);
>  	if (!input)
>  		return -ENOMEM;
> @@ -2945,6 +2958,20 @@ static int igb_add_ethtool_nfc_entry(struct
> igb_adapter *adapter,
>  		input->filter.match_flags = IGB_FILTER_FLAG_ETHER_TYPE;
>  	}
> 
> +	/* Only support matching addresses by the full mask */
> +	if (is_broadcast_ether_addr(fsp->m_u.ether_spec.h_source)) {
> +		input->filter.match_flags |=
> IGB_FILTER_FLAG_SRC_MAC_ADDR;
> +		ether_addr_copy(input->filter.src_addr,
> +				fsp->h_u.ether_spec.h_source);
> +	}
> +
> +	/* Only support matching addresses by the full mask */
> +	if (is_broadcast_ether_addr(fsp->m_u.ether_spec.h_dest)) {
> +		input->filter.match_flags |=
> IGB_FILTER_FLAG_DST_MAC_ADDR;
> +		ether_addr_copy(input->filter.dst_addr,
> +				fsp->h_u.ether_spec.h_dest);
> +	}
> +
>  	if ((fsp->flow_type & FLOW_EXT) && fsp->m_ext.vlan_tci) {
>  		if (fsp->m_ext.vlan_tci != htons(VLAN_PRIO_MASK)) {
>  			err = -EINVAL;
> --
> 2.16.2
> 
> _______________________________________________
> Intel-wired-lan mailing list
> Intel-wired-lan@...osl.org
> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan

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