Messages in this thread | | | Date | Tue, 26 Mar 2019 13:23:01 -0700 (PDT) | Subject | Re: [PATCH] r8152: Refresh MAC address during USBDEVFS_RESET | From | David Miller <> |
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From: <Mario.Limonciello@dell.com> Date: Tue, 26 Mar 2019 19:52:50 +0000
>> -----Original Message----- >> From: David Miller <davem@davemloft.net> >> Sent: Tuesday, March 26, 2019 1:51 PM >> To: Limonciello, Mario >> Cc: linux-usb@vger.kernel.org; netdev@vger.kernel.org; linux- >> kernel@vger.kernel.org; hayeswang@realtek.com; sjg@google.com; >> campello@google.com; Hong, Ryan; Wang, Crag >> Subject: Re: [PATCH] r8152: Refresh MAC address during USBDEVFS_RESET >> >> >> [EXTERNAL EMAIL] >> >> From: Mario Limonciello <mario.limonciello@dell.com> >> Date: Mon, 25 Mar 2019 09:12:23 -0500 >> >> > On some platforms it is possible to dynamically change the policy >> > of what MAC address is selected from the ASL at runtime. >> > >> > These tools will reset the USB device and expect the change to be >> > made immediately. >> > >> > Signed-off-by: Mario Limonciello <mario.limonciello@dell.com> >> >> You are going to have to emit CHANGEADDR notifications and such if >> necessary when you do this. > > Thanks for the feedback, I'll add that call. Do you feel a need that the MAC > address needs to be tracked and compared to what was previously in ACPI > table to know it "really" changed or just emit CHANGEADDR because it "might" > have changed?
Probably it is better for apps to track it.
You can consider using dev_set_mac_address(), I wouldn't advise cooking your own copy of the event emission code.
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