linux

iv/linux

History

Vladimir Oltean 9d75b88185 net: mscc: ocelot: annotate which traps need PTP timestamping

The ocelot switch library does not need this information, but the felix
DSA driver does.

As a reminder, the VSC9959 switch in LS1028A doesn't have an IRQ line
for packet extraction, so to be notified that a PTP packet needs to be
dequeued, it receives that packet also over Ethernet, by setting up a
packet trap. The Felix driver needs to install special kinds of traps
for packets in need of RX timestamps, such that the packets are
replicated both over Ethernet and over the CPU port module.

But the Ocelot switch library sets up more than one trap for PTP event
messages; it also traps PTP general messages, MRP control messages etc.
Those packets don't need PTP timestamps, so there's no reason for the
Felix driver to send them to the CPU port module.

By knowing which traps need PTP timestamps, the Felix driver can
adjust the traps installed using ocelot_trap_add() such that only those
will actually get delivered to the CPU port module.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2022-02-17 14:06:51 +00:00

arc

clocksource/drivers/arc_timer: Eliminate redefined macro error

2021-10-16 22:15:01 +02:00

at91

ARM: at91: ddr: add registers definitions for sama7g5's ddr

2021-07-19 14:32:12 +02:00

bcm2835

firmware: raspberrypi: Introduce devm_rpi_firmware_get()

2021-03-22 17:59:51 +01:00

canaan

clk: Add RISC-V Canaan Kendryte K210 clock driver