pieeprom-2025-02-24: 2711: Implement TCP window for net boot (latest) #704
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timg236
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May 8, 2025
timg236
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- Signed boot and HTTP boot mode HTTP boot mode is supposed to be disabled if signed boot is enabled and a host is not specified. The code is checking the http_secure flag to enforce this. But this is valid now we support custom CA certs. Only disable HTTP mode if we're using the default HOST.
- Implement TCP window for net boot The minimal IP stack used for https booting lacks the ability to cache packets received out of order, which can lead to severe slowdown when it happens. The problem seems to affect some ISPs more than others. The receive window implemented here copes with packet losses of 10%.
- netboot: Correct the TCP MSS
- Correct msecs in debug timestamps The fractional part of timestamps in UART debug output was showing the 100ths and 1000ths of a second, rather than 10ths and 100ths, causing strange sequences that appear to jump backwards.
* Signed boot and HTTP boot mode HTTP boot mode is supposed to be disabled if signed boot is enabled and a host is not specified. The code is checking the http_secure flag to enforce this. But this is valid now we support custom CA certs. Only disable HTTP mode if we're using the default HOST. * Implement TCP window for net boot The minimal IP stack used for https booting lacks the ability to cache packets received out of order, which can lead to severe slowdown when it happens. The problem seems to affect some ISPs more than others. The receive window implemented here copes with packet losses of 10%. * netboot: Correct the TCP MSS * Correct msecs in debug timestamps The fractional part of timestamps in UART debug output was showing the 100ths and 1000ths of a second, rather than 10ths and 100ths, causing strange sequences that appear to jump backwards.
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The branch name made sense, but not the file name. |
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