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net: dsa: Support prepended Broadcom tag

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Add a new type: DSA_TAG_PROTO_PREPEND which allows us to support for the
4-bytes Broadcom tag that we already support, but in a format where it
is pre-pended to the packet instead of located between the MAC SA and
the Ethertyper (DSA_TAG_PROTO_BRCM).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2017-11-10 15:22:54 -08:00 • committed by David S. Miller
parent f7c39e3d1e
commit b74b70c449
6 changed files with 41 additions and 7 deletions
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1
include/net/dsa.h
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@ -29,6 +29,7 @@ struct fixed_phy_status;
enum dsa_tag_protocol {
DSA_TAG_PROTO_NONE = 0,
DSA_TAG_PROTO_BRCM,
DSA_TAG_PROTO_BRCM_PREPEND,
DSA_TAG_PROTO_DSA,
DSA_TAG_PROTO_EDSA,
DSA_TAG_PROTO_KSZ,