Several of the switch families in this driver have switches with AVB
support. The switches with AVB support have support for Credit based
shaping. This series adds support for the 6352, 6390 and 6393 families.
The difference between the families is:
- total number of queues
- which queues support credit based shaping
- shaping granularity
Eg. setting up 20mbps credit based shaper on a 1GBit link:
tc qdisc add dev p8 parent root handle 100: mqprio \
num_tc 8 \
map 0 0 6 7 0 5 0 0 0 0 0 0 0 0 0 0 \
queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 \
hw 0
tc qdisc replace dev p8 parent 100:8 cbs locredit -1470 hicredit 30 \
sendslope -980000 idleslope 20000 offload 1
Signed-off-by: Cedric Jehasse <cedric.jehasse@luminex.be>
---
Changes in v2:
- tx_queues defined for all devices (which could be found). Thanks to Marek Behún.
- Link to v1: https://lore.kernel.org/r/20260522-net-next-mv88e6xxx-cbs-v1-0-c87a8e6bcc0c@luminex.be
---
Cedric Jehasse (2):
net: dsa: mv88e6xxx: use the hw tx queues
net: dsa: mv88e6xxx: add support for credit based shaper
drivers/net/dsa/mv88e6xxx/chip.c | 157 ++++++++++++++++++++++++++++++++
drivers/net/dsa/mv88e6xxx/chip.h | 22 +++++
drivers/net/dsa/mv88e6xxx/global2_avb.c | 21 +++++
drivers/net/dsa/mv88e6xxx/port.c | 38 ++++++++
drivers/net/dsa/mv88e6xxx/port.h | 16 ++++
net/dsa/tag_dsa.c | 3 +-
6 files changed, 256 insertions(+), 1 deletion(-)
---
base-commit: 022bdd9c0d036863c4bacd1688b73c6be3001cee
change-id: 20260430-net-next-mv88e6xxx-cbs-2121169caa68
Best regards,
--
Cedric Jehasse <cedric.jehasse@luminex.be>