net: fec: add change_mtu to support dynamic buffer allocation

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Add a fec_change_mtu() handler to recalculate the pagepool_order based on
the new_mtu value. And update the rx_frame_size accordingly when
pagepool_order changes.

MTU changes are only allowed when the adater is not running.

Reviewed-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://patch.msgid.link/20250910185211.721341-6-shenwei.wang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Shenwei Wang 2025-09-10 13:52:10 -05:00 • committed by Jakub Kicinski

parent 5b14ed3ac5

commit 59e9bf037d

2 changed files with 23 additions and 4 deletions

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5

drivers/net/ethernet/freescale/fec.h

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22

drivers/net/ethernet/freescale/fec_main.c

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