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Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" poi
From: |
Simon Goldschmidt |
Subject: |
Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer. |
Date: |
Wed, 10 Jan 2018 15:21:50 +0100 |
Bernhart Pelger wrote:
>>> I know this sounds fundamentally broken, because other arriving packets
>>> might be overwriting the free'd DMA buffers before LWIP or the
>>> application had a chance to process it.
>>
>> This does not *sound* fundamentally broken, it *is*!
> But that's a different topic, not in the scope of this topic, or even
> this mailing list.
> And it doesn't affect me right now with my usage pattern.
It's a different topic, yes. I'm not 100% sure though that it doesn't
affect you. If you see cache issues now, how far away is an overwritten
packet?
Simon
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., Bernhart Pelger, 2018/01/08
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., Bernhart Pelger, 2018/01/08
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., Simon Goldschmidt, 2018/01/08
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., Bernhart Pelger, 2018/01/08
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., address@hidden, 2018/01/08
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., Bernhart Pelger, 2018/01/10
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer.,
Simon Goldschmidt <=
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., Bernhart Pelger, 2018/01/10
- Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer., address@hidden, 2018/01/10