Vladimir Oltean cacea62fcd net: mscc: ocelot: don't use NPI tag prefix for the CPU port module ... Context: Ocelot switches put the injection/extraction frame header in front of the Ethernet header. When used in NPI mode, a DSA master would see junk instead of the destination MAC address, and it would most likely drop the packets. So the Ocelot frame header can have an optional prefix, which is just "ff:ff:ff:ff:ff:fe > ff:ff:ff:ff:ff:ff" padding put before the actual tag (still before the real Ethernet header) such that the DSA master thinks it's looking at a broadcast frame with a strange EtherType. Unfortunately, a lesson learned in commit 69df578c5f ("net: mscc: ocelot: eliminate confusion between CPU and NPI port") seems to have been forgotten in the meanwhile. The CPU port module and the NPI port have independent settings for the length of the tag prefix. However, the driver is using the same variable to program both of them. There is no reason really to use any tag prefix with the CPU port module, since that is not connected to any Ethernet port. So this patch makes the inj_prefix and xtr_prefix variables apply only to the NPI port (which the switchdev ocelot_vsc7514 driver does not use). Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2021-01-29 21:24:30 -08:00
..
ocelot_ana.h	net: mscc: ocelot: fix fields offset in SG_CONFIG_REG_3	2020-09-24 20:00:40 -07:00
ocelot_dev.h	net: mscc: ocelot: convert port registers to regmap	2020-07-13 17:40:01 -07:00
ocelot_hsio.h	net: mscc: ocelot: simplify register access for PLL5 configuration	2018-10-05 14:36:44 -07:00
ocelot_ptp.h	net: mscc: ocelot: make ocelot_init_timestamp take a const struct ptp_clock_info	2020-09-18 17:52:40 -07:00
ocelot_qsys.h	net: mscc: ocelot: add ops for decoding watermark threshold and occupancy	2021-01-15 20:02:34 -08:00
ocelot_sys.h	net: mscc: ocelot: convert SYS_PAUSE_CFG register access to regfield	2020-07-13 17:40:02 -07:00
ocelot_vcap.h	net: mscc: ocelot: store a namespaced VCAP filter ID	2021-01-29 21:24:30 -08:00
ocelot.h	net: mscc: ocelot: don't use NPI tag prefix for the CPU port module	2021-01-29 21:24:30 -08:00