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Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no err
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From: |
goldsimon |
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Subject: |
Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error |
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Date: |
Thu, 14 Sep 2017 16:13:59 +0200 |
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User-agent: |
K-9 Mail for Android |
Adrian Figueroa wrote::
>I have no idea why I have no packet loss with TCP_WND and TCP_SND_BUF
>set to 2xTCP_MSS. Instead, I get rare ZeroWindow errors from my PC.
Because you don't fill your DMA buffers in this case and as a result, you don't
drop tx segments.
Implementing a zero copy driver in lwip is, unfortunately, still not that easy.
Simon
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, (continued)
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Sergio R. Caprile, 2017/09/01
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/01
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Sergio R. Caprile, 2017/09/01
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/11
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Sergio R. Caprile, 2017/09/11
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/14
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, goldsimon, 2017/09/14
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Nathan Hartman, 2017/09/14
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/14
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error,
goldsimon <=
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/14
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, address@hidden, 2017/09/14
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/15
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Noam Weissman, 2017/09/15
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/15
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/15
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, address@hidden, 2017/09/15
- Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error, Adrian Figueroa, 2017/09/16