net: lan966x: Adjust maximum frame size when vlan is enabled/disabled

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When vlan filtering is enabled/disabled, it is required to adjust the
maximum received frame size that it can received. When vlan filtering is
enabled, it would all to receive extra 4 bytes, that are the vlan tag.
So the maximum frame size would be 1522 with a vlan tag. If vlan
filtering is disabled then the maximum frame size would be 1518
regardless if there is or not a vlan tag.

Fixes: 6d2c186afa ("net: lan966x: Add vlan support.")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Horatiu Vultur 2022-10-30 22:36:35 +01:00 • committed by Jakub Kicinski

parent 486c292230

commit 25f28bb1b4

2 changed files with 21 additions and 0 deletions

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15

drivers/net/ethernet/microchip/lan966x/lan966x_regs.h

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6

drivers/net/ethernet/microchip/lan966x/lan966x_vlan.c

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