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GitHub177 >
misoc/master e136030 Florent Kermarrec: cores/liteeth_mini/mac/sram: fix reception of frames larger than MTU...
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_florent_ >
sb0: ^ I think you can retry receiving jumbo frame with that. It should return the correct length but drop the remaining bytes larger than MTU
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_florent_ >
sb0: for sram depth, design use slots with depth that are power of of two (to decode slots). If we want to support non power of two depth we have to some change on the design
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sb0 >
_florent_, non power of two BRAM != power of two address alignment
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sb0 >
you can have non-power-of-two BRAMs are aligned to power-of-two addresses without using any extra FPGA resources
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sb0 >
whitequark, can you fix the buildbot?
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whitequark >
sb0: no
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whitequark >
I've no idea what's broken with it
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whitequark >
the correct gateware is flashed
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GitHub109 >
misoc/master 98ed0ce Sebastien Bourdeauducq: bios: fix help message
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GitHub55 >
misoc/master 0d08038 Sebastien Bourdeauducq: liteeth: use non power-of-two RAM depth
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sb0 >
of course, lwip provides exactly zero support for rejecting jumbo frames, and you have to decode frames yourself
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sb0 >
setting MTU to 9k in lwip will also cause problems in the other direction, because lwip doesn't support path MTU discovery either
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sb0 >
do people actually use lwip?
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sb0 >
no jumbo frames = you can't reject them, jumbo frames = you cannot talk to devices that don't support them
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whitequark >
sb0: was that the liteeth power of two issue?
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sb0 >
I have no idea why it works again
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sb0 >
and last time it definitely flashed an older package. maybe there is some conda non-determinism mixed with vivado non-determinism ...
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