Commit 8e0140a2 authored by Fabian Mewes's avatar Fabian Mewes Committed by David S. Miller

Documentation: networking: dsa: Update tagging protocols

Add Qualcomm QCA tagging introduced in cafdc45c to the
list of supported protocols.
Signed-off-by: default avatarFabian Mewes <>
Reviewed-by: default avatarAndrew Lunn <>
Acked-by: default avatarFlorian Fainelli <>
Signed-off-by: default avatarDavid S. Miller <>
parent f3358507
......@@ -67,13 +67,14 @@ Note that DSA does not currently create network interfaces for the "cpu" and
Switch tagging protocols
DSA currently supports 4 different tagging protocols, and a tag-less mode as
DSA currently supports 5 different tagging protocols, and a tag-less mode as
well. The different protocols are implemented in:
net/dsa/tag_trailer.c: Marvell's 4 trailer tag mode (legacy)
net/dsa/tag_dsa.c: Marvell's original DSA tag
net/dsa/tag_edsa.c: Marvell's enhanced DSA tag
net/dsa/tag_brcm.c: Broadcom's 4 bytes tag
net/dsa/tag_qca.c: Qualcomm's 2 bytes tag
The exact format of the tag protocol is vendor specific, but in general, they
all contain something which:
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