linux-kernel - Re: [PATCH RESEND v2 1/2] net: usb: cdc

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Date:   Thu, 30 Jun 2022 10:27:16 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     Sven Schwermer <sven@...nschwermer.de>, linux-usb@...r.kernel.org,
        oliver@...kum.org
Cc:     Sven Schwermer <sven.schwermer@...ruptive-technologies.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND v2 1/2] net: usb: cdc_ether: Add Fibocom L610 modem



On 27.06.22 15:36, Sven Schwermer wrote:
> From: Sven Schwermer <sven.schwermer@...ruptive-technologies.com>
> 
> Since this is a modem device enumerating as an Ethernet adapter, we need
> to whitelist it as a WWAN device which tells userspace that this device
> requires setup (via AT commands) before it can be used.
> 
> The L610 modem has 3 USB configurations that are configurable via the AT
> command AT+GTUSBMODE={31,32,33} which make the modem enumerate with the
> following interfaces, respectively:
> 
> 31: Modem + NV + MOS + Diag + LOG + AT + AT
> 32: ECM + Modem + NV + MOS + Diag + LOG + AT + AT
> 33: RNDIS + Modem + NV + MOS + Diag + LOG + AT + AT
> 
> A detailed description of the USB configuration for the ECM mode
> (+GTUSBMODE=32) follows:
> 
> T:  Bus=03 Lev=01 Prnt=01 Port=06 Cnt=04 Dev#=122 Spd=480  MxCh= 0
> D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
> P:  Vendor=1782 ProdID=4d11 Rev= 0.00
> S:  Manufacturer=FIBOCOM
> S:  Product=L610
> C:* #Ifs= 9 Cfg#= 1 Atr=e0 MxPwr=400mA
> A:  FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=06 Prot=00
> I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=06 Prot=00 Driver=cdc_ether
> E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=32ms
> I:  If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
> I:* If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
> E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> E:  Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> E:  Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 6 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> E:  Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 7 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> E:  Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=07(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 8 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
> E:  Ad=89(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E:  Ad=08(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> 
> Signed-off-by: Sven Schwermer <sven.schwermer@...ruptive-technologies.com>
Acked-by: Oliver Neukum <oneukum@...e.com>