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authorVladimir Oltean <vladimir.oltean@nxp.com>2019-11-14 17:03:29 +0200
committerDavid S. Miller <davem@davemloft.net>2019-11-15 12:32:16 -0800
commit8dce89aa5f3274e7c26132433840f63d129406bb (patch)
treefa13fd44431cee10863da99958a3ff28e3277883 /net/dsa/Kconfig
parenta030dfe1947310a2140b9e371dc9ebfab72c914f (diff)
net: dsa: ocelot: add tagger for Ocelot/Felix switches
While it is entirely possible that this tagger format is in fact more generic than just these 2 switch families, I don't have that knowledge. The Seville switch in NXP T1040 has a similar frame format, but there are enough differences (e.g. DEST field starts at bit 57 instead of 56) that calling this file tag_vitesse.c is a bit of a stretch at the moment. The frame format has been listed in a comment so that people who add support for further Vitesse switches can rework this tagger while keeping compatibility with Felix. The "ocelot" name was chosen instead of "felix" because even the Ocelot switch can act as a DSA device when it is used in NPI mode, and the Felix tagger format is almost identical. Currently it is only used for the Felix switch embedded in the NXP LS1028A chip. The ABI for this tagger should be considered "not stable" at the moment. The DSA tag is always placed before the Ethernet header and therefore, we are using the long prefix for RX tags to avoid putting the DSA master port in promiscuous mode. Once there will be an API in DSA for drivers to request DSA masters to be in promiscuous mode unconditionally, we will switch to the "no prefix" extraction frame header, which will save 16 padding bytes for each RX frame. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa/Kconfig')
-rw-r--r--net/dsa/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
index 136612792c08..1e6c3cac11e6 100644
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -79,6 +79,13 @@ config NET_DSA_TAG_KSZ
Say Y if you want to enable support for tagging frames for the
Microchip 8795/9477/9893 families of switches.
+config NET_DSA_TAG_OCELOT
+ tristate "Tag driver for Ocelot family of switches"
+ select PACKING
+ help
+ Say Y or M if you want to enable support for tagging frames for the
+ Ocelot switches (VSC7511, VSC7512, VSC7513, VSC7514, VSC9959).
+
config NET_DSA_TAG_QCA
tristate "Tag driver for Qualcomm Atheros QCA8K switches"
help