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[ Upstream commit 7fe0353606d77a32c4c7f2814833dd1c043ebdd2 ] mtk_foe_entry_set_vlan() in mtk_ppe.c already supports double vlan tagging, but mtk_flow_offload_replace() in mtk_ppe_offload.c only allows for 1 vlan tag, optionally in combination with pppoe and dsa tags. However, mtk_foe_entry_set_vlan() only allows for setting the vlan id. The protocol cannot be set, it is always ETH_P_8021Q, for inner and outer tag. This patch adds QinQ support to mtk_flow_offload_replace(), only in the case that both inner and outer tags are ETH_P_8021Q. Only PPPoE-in-Q (as before) and Q-in-Q are allowed. A combination of PPPoE and Q-in-Q is not allowed. Signed-off-by: Eric Woudstra <ericwouds@gmail.com> Link: https://patch.msgid.link/20250225201509.20843-1-ericwouds@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.