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Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable

From Mark Lord <mlord@pobox.com>
Newsgroups linux.kernel
Subject Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable
Date 2016-11-25 04:50 +0100
Message-ID <sHfGp-3FT-3@gated-at.bofh.it> (permalink)
References (1 earlier) <sH54l-5b9-27@gated-at.bofh.it> <sH5nH-5hZ-17@gated-at.bofh.it> <sH5QJ-5Hs-3@gated-at.bofh.it> <sH76a-6sM-21@gated-at.bofh.it> <sHcyR-1Mu-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 16-11-24 07:27 PM, Francois Romieu wrote:
>
> Through aliasing the URB was given a page that contains said (previously)
> received file. The ethernet chip/usb host does not write anything in it.

I don't see how that could be possible.  Please elaborate.

The URB buffers are statically allocated by the driver at probe time,
ten of them in all, allocated with usb_alloc_coherent() in the copy of
the driver I am testing with.

There is no possibility for them to be used for anything other than
USB receive buffers, for this driver only.  Nothing in the driver
or kernel ever writes to those buffers after initial allocation,
and only the driver and USB host controller ever have pointers to the buffers.
-- 
Mark Lord

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Thread

RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-17 04:40 +0100
  Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-17 15:30 +0100
  Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-17 15:40 +0100
  RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-18 09:00 +0100
    Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-18 13:10 +0100
      Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-22 14:20 +0100
      RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-23 05:00 +0100
        Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-23 14:50 +0100
          RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-23 16:20 +0100
            Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-23 20:30 +0100
              RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-24 04:30 +0100
              Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-24 13:40 +0100
                RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-24 14:30 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable David Miller <davem@davemloft.net> - 2016-11-24 17:30 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-24 17:50 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-24 18:10 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable David Miller <davem@davemloft.net> - 2016-11-24 18:20 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable David Miller <davem@davemloft.net> - 2016-11-24 18:20 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-24 19:40 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-24 19:50 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Greg KH <greg@kroah.com> - 2016-11-24 20:10 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Greg KH <greg@kroah.com> - 2016-11-24 20:20 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-24 20:20 +0100
                RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-25 11:00 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 14:40 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Francois Romieu <romieu@fr.zoreil.com> - 2016-11-25 01:30 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 04:50 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Greg KH <greg@kroah.com> - 2016-11-25 11:00 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 13:50 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 13:50 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Greg KH <greg@kroah.com> - 2016-11-25 15:30 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 15:40 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 14:00 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Greg KH <greg@kroah.com> - 2016-11-25 15:40 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable David Miller <davem@davemloft.net> - 2016-11-25 18:10 +0100
                RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-30 13:00 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-12-09 14:10 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Greg KH <gregkh@linuxfoundation.org> - 2016-11-24 19:50 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-24 20:00 +0100
                RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-25 07:40 +0100
                RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-25 08:00 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 13:50 +0100
                RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-25 07:20 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Mark Lord <mlord@pobox.com> - 2016-11-25 13:50 +0100
                Re: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable David Miller <davem@davemloft.net> - 2016-11-24 17:30 +0100
          RE: [PATCH net 1/2] r8152: fix the sw rx checksum is unavailable Hayes Wang <hayeswang@realtek.com> - 2016-11-24 13:40 +0100

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