net: dsa: tag_brcm: add support for legacy FCS tags

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Add support for legacy Broadcom FCS tags, which are similar to
DSA_TAG_PROTO_BRCM_LEGACY.
BCM5325 and BCM5365 switches require including the original FCS value and
length, as opposed to BCM63xx switches.
Adding the original FCS value and length to DSA_TAG_PROTO_BRCM_LEGACY would
impact performance of BCM63xx switches, so it's better to create a new tag.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250614080000.1884236-3-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Álvaro Fernández Rojas 2025-06-14 09:59:48 +02:00 • committed by Jakub Kicinski

parent a4daaf063f

commit ef07df397a

3 changed files with 88 additions and 3 deletions

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2

include/net/dsa.h

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16

net/dsa/Kconfig

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73

net/dsa/tag_brcm.c

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