netdev - RE: [PATCH net] net: enetc: set MAC address to the VF net

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Message-ID:
 <AS8PR04MB8849BA43CF5F6296E2D254C7964A2@AS8PR04MB8849.eurprd04.prod.outlook.com>
Date: Mon, 28 Oct 2024 12:01:06 +0000
From: Claudiu Manoil <claudiu.manoil@....com>
To: Wei Fang <wei.fang@....com>, "davem@...emloft.net" <davem@...emloft.net>,
	"edumazet@...gle.com" <edumazet@...gle.com>, "kuba@...nel.org"
	<kuba@...nel.org>, "pabeni@...hat.com" <pabeni@...hat.com>,
	"andrew+netdev@...n.ch" <andrew+netdev@...n.ch>, Vladimir Oltean
	<vladimir.oltean@....com>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>
Subject: RE: [PATCH net] net: enetc: set MAC address to the VF net_device

> -----Original Message-----
> From: Wei Fang <wei.fang@....com>
> Sent: Monday, October 28, 2024 10:53 AM
[...]
> Subject: [PATCH net] net: enetc: set MAC address to the VF net_device
> 
> The MAC address of VF can be configured through the mailbox mechanism of
> ENETC, but the previous implementation forgot to set the MAC address in
> net_device, resulting in the SMAC of the sent frames still being the old
> MAC address. Since the MAC address in the hardware has been changed, Rx
> cannot receive frames with the DMAC address as the new MAC address. The
> most obvious phenomenon is that after changing the MAC address, we can
> see that the MAC address of eno0vf0 has not changed through the "ifconfig
> eno0vf0" commandand the IP address cannot be obtained .
> 
> root@...028ardb:~# ifconfig eno0vf0 down
> root@...028ardb:~# ifconfig eno0vf0 hw ether 00:04:9f:3a:4d:56 up
> root@...028ardb:~# ifconfig eno0vf0
> eno0vf0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         ether 66:36:2c:3b:87:76  txqueuelen 1000  (Ethernet)
>         RX packets 794  bytes 69239 (69.2 KB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 11  bytes 2226 (2.2 KB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
> 
> Fixes: beb74ac878c8 ("enetc: Add vf to pf messaging support")
> Signed-off-by: Wei Fang <wei.fang@....com>
> ---

Reviewed-by: Claudiu Manoil <claudiu.manoil@....com>