net: dsa: sja1105: Receive and decode meta frames

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This adds support in the tagger for understanding the source port and
switch id of meta frames.  Their timestamp is also extracted but not
used yet - this needs to be done in a state machine that modifies the
previously received timestampable frame - will be added in a follow-up
patch.

Also take the opportunity to:
- Remove a comment in sja1105_filter made obsolete by e8d67fa569
  ("net: dsa: sja1105: Don't store frame type in skb->cb")
- Reorder the checks in sja1105_filter to optimize for the most likely
  scenario first: regular traffic.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vladimir Oltean 2019-06-08 15:04:39 +03:00 • committed by David S. Miller

parent 79fa706139

commit e53e18a6fe

1 changed files with 41 additions and 3 deletions

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net/dsa/tag_sja1105.c

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