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[lwip-devel] [bug #50914] TCP server don't update the ack num
From: |
Simon Goldschmidt |
Subject: |
[lwip-devel] [bug #50914] TCP server don't update the ack num |
Date: |
Thu, 11 May 2017 03:25:56 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36 |
Follow-up Comment #12, bug #50914 (project lwip):
LWIP_CHECKSUM_ON_COPY
== 1: for headers, checksum is calculated byte by byte when the header is
filled; for data, checksum is created during memcpy when the data is already
in the processor's registers
== 0: first headers and data are put in place and just before transmitting,
checksum is created by fetching all bytes into the processor's registers again
and summing them up.
Clearly, checksum-on-copy should be faster, which is why it is the default.
However, your log output indicates there's a problem with this and the
generated checksum is off by one.
Could you post such a log? Hopefully, I can see which segments sizes where
sent.
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- [lwip-devel] [bug #50914] TCP server don't update the ack num, (continued)
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Simon Goldschmidt, 2017/05/02
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Simon Goldschmidt, 2017/05/02
- [lwip-devel] [bug #50914] TCP server don't update the ack num, shilei yu, 2017/05/02
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Simon Goldschmidt, 2017/05/04
- [lwip-devel] [bug #50914] TCP server don't update the ack num, shilei yu, 2017/05/05
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Simon Goldschmidt, 2017/05/05
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Simon Goldschmidt, 2017/05/05
- [lwip-devel] [bug #50914] TCP server don't update the ack num, shilei yu, 2017/05/05
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Simon Goldschmidt, 2017/05/08
- [lwip-devel] [bug #50914] TCP server don't update the ack num, shilei yu, 2017/05/11
- [lwip-devel] [bug #50914] TCP server don't update the ack num,
Simon Goldschmidt <=
- [lwip-devel] [bug #50914] TCP server don't update the ack num, shilei yu, 2017/05/11
- [lwip-devel] [bug #50914] TCP server don't update the ack num, shilei yu, 2017/05/11
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Joel Cunningham, 2017/05/11
- [lwip-devel] [bug #50914] TCP server don't update the ack num, Simon Goldschmidt, 2017/05/11
- [lwip-devel] [bug #50914] TCP_CHECKSUM_ON_COPY when adding data to retransmission, Simon Goldschmidt, 2017/05/11