netdev - Re: [PATCH v3 net-next 1/2] net: ethernet: mtk_eth_soc: add code for offloading flows from wlan devices

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Date:   Fri, 31 Mar 2023 23:01:20 +0200
From:   Felix Fietkau <nbd@....name>
To:     Simon Horman <simon.horman@...igine.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH v3 net-next 1/2] net: ethernet: mtk_eth_soc: add code for
 offloading flows from wlan devices

On 31.03.23 22:38, Simon Horman wrote:
> On Fri, Mar 31, 2023 at 02:47:06PM +0200, Felix Fietkau wrote:
>> WED version 2 (on MT7986 and later) can offload flows originating from
>> wireless devices.
>> In order to make that work, ndo_setup_tc needs to be implemented on the
>> netdevs. This adds the required code to offload flows coming in from WED,
>> while keeping track of the incoming wed index used for selecting the
>> correct PPE device.
>> 
>> Signed-off-by: Felix Fietkau <nbd@....name>
> 
> ...
> 
>> diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
> 
> ...
> 
>> +static int
>> +mtk_eth_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)
>> +{
>> +	struct flow_cls_offload *cls = type_data;
>> +	struct mtk_mac *mac = netdev_priv(dev);
> 
> This does not compile because dev is undefined at this point.
Yes, I had fixed that, but forgot to amend the commit before sending it 
out. Sorry about that.

> ...
> 
>> +static int
>> +mtk_wed_setup_tc_block(struct mtk_wed_hw *hw, struct net_device *dev,
>> +		       struct flow_block_offload *f)
>> +{
>> +	struct mtk_wed_flow_block_priv *priv;
>> +	static LIST_HEAD(block_cb_list);
>> +	struct flow_block_cb *block_cb;
>> +	struct mtk_eth *eth = hw->eth;
>> +	bool register_block = false;
> 
> gcc-12 with W=1 tellsme that register_block is unused.
> It should be removed.
Right. Will send v4 tomorrow.

Thanks,

- Felix