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FS#3285 - Can't change MTU on IPQ806x devices #8155

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openwrt-bot opened this issue Aug 15, 2020 · 2 comments
Open

FS#3285 - Can't change MTU on IPQ806x devices #8155

openwrt-bot opened this issue Aug 15, 2020 · 2 comments
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flyspray kernel pull request/issue with Linux kernel related changes

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jacekowski:

ifdown wan

ifconfig (wan_interface) MTU 1499 (or 1501 or anything other than 1500)

This bug is caused by txfifosz being 0 on IPQ806x devices (and possibly more) unless tx-fifo-depth is specified in device tree, potential fix would be to specify tx-fifo-depth in device tree for all affected devices, or, check if txfifosz == 0 and then allow MTU change.
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kebe:

Same here. Archer C2600 (ipq8064)

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Olipro:

Ditto on Netgear R7800, this is a new regression since I updated from an early 2019 build. It blocks me from using baby jumbo frames (1508 MTU) over PPPoE.

@aparcar aparcar added the kernel pull request/issue with Linux kernel related changes label Feb 22, 2022
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