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From: Stephen Hemminger <stephen@networkplumber.org>
To: Junlong Wang <wang.junlong1@zte.com.cn>
Cc: dev@dpdk.org, stable@dpdk.org
Subject: Re: [PATCH v1 2/6] net/zxdh: fix issues related to MAC configuration
Date: Mon, 7 Jul 2025 09:02:24 -0700	[thread overview]
Message-ID: <20250707090224.1ee10cf3@hermes.local> (raw)
In-Reply-To: <20250707055621.357606-2-wang.junlong1@zte.com.cn>

On Mon,  7 Jul 2025 13:56:17 +0800
Junlong Wang <wang.junlong1@zte.com.cn> wrote:

> Fix error handling when MAC configuration fails.
> This is issue was discovered during internal testing.
> 
> Fixes: 1c8f68b64cfc ("net/zxdh: optimize MAC operations")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Junlong Wang <wang.junlong1@zte.com.cn>
> ---
>  drivers/net/zxdh/zxdh_ethdev.c     | 15 +++++++++++
>  drivers/net/zxdh/zxdh_ethdev_ops.c | 34 +++++++++++++++++++-----
>  drivers/net/zxdh/zxdh_msg.c        | 10 +++----
>  drivers/net/zxdh/zxdh_tables.c     | 42 ++++++++++++++++--------------
>  4 files changed, 69 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/net/zxdh/zxdh_ethdev.c b/drivers/net/zxdh/zxdh_ethdev.c
> index 80053678cb..8996d86b90 100644
> --- a/drivers/net/zxdh/zxdh_ethdev.c
> +++ b/drivers/net/zxdh/zxdh_ethdev.c
> @@ -1265,6 +1265,7 @@ static int
>  zxdh_mac_config(struct rte_eth_dev *eth_dev)
>  {
>  	struct zxdh_hw *hw = eth_dev->data->dev_private;
> +	struct zxdh_msg_info msg_info = {0};
>  	int ret = 0;
>  
>  	if (hw->is_pf) {
> @@ -1274,7 +1275,21 @@ zxdh_mac_config(struct rte_eth_dev *eth_dev)
>  			PMD_DRV_LOG(ERR, "Failed to add mac: port 0x%x", hw->vport.vport);
>  			return ret;
>  		}
> +		hw->uc_num++;
> +	} else {
> +		struct zxdh_mac_filter *mac_filter = &msg_info.data.mac_filter_msg;
> +		mac_filter->filter_flag = 0xff;
> +		memcpy(&mac_filter->mac, &eth_dev->data->mac_addrs[0],
> +				sizeof(eth_dev->data->mac_addrs[0]));

Since mac_filter->mac and eth_dev->data->mac_addrs are both of same type (rte_ether_addr),
using structure assignment operation instead of memcpy is preferred. Assignment assures
that types are the same. 
	mac_filter->mac = eth_dev->data->mac_addrs;


  reply	other threads:[~2025-07-07 16:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-07  5:56 [PATCH v1 1/6] net/zxdh: fix meson.build issues in compilation Junlong Wang
2025-07-07  5:56 ` [PATCH v1 2/6] net/zxdh: fix issues related to MAC configuration Junlong Wang
2025-07-07 16:02   ` Stephen Hemminger [this message]
2025-07-07  5:56 ` [PATCH v1 3/6] net/zxdh: fix some VLAN related issues Junlong Wang
2025-07-07  5:56 ` [PATCH v1 4/6] net/zxdh: fix RSS " Junlong Wang

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