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| author | George McCollister <george.mccollister@gmail.com> | 2021-02-10 02:02:10 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-02-11 22:24:44 +0100 |
| commit | 78be9217c4014cebac4d549cc2db1f2886d5a8fb (patch) | |
| tree | 968ff404a23219e4345511bcdf2e9c19a9244a11 /Documentation/networking/netdev-features.rst | |
| parent | net: dsa: xrs700x: use of_match_ptr() on xrs700x_mdio_dt_ids (diff) | |
| download | linux-78be9217c4014cebac4d549cc2db1f2886d5a8fb.tar.xz linux-78be9217c4014cebac4d549cc2db1f2886d5a8fb.zip | |
net: hsr: generate supervision frame without HSR/PRP tag
For a switch to offload insertion of HSR/PRP tags, frames must not be
sent to the CPU facing switch port with a tag. Generate supervision frames
(eth type ETH_P_PRP) without HSR v1 (ETH_P_HSR)/PRP tag and rely on
create_tagged_frame which inserts it later. This will allow skipping the
tag insertion for all outgoing frames in the future which is required for
HSR v1/PRP tag insertions to be offloaded.
HSR v0 supervision frames always contain tag information so insertion of
the tag can't be offloaded. IEC 62439-3 Ed.2.0 (HSR v1) specifically
notes that this was changed since v0 to allow offloading.
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/netdev-features.rst')
0 files changed, 0 insertions, 0 deletions