diff options
| author | Ioana Ciornei <ioana.ciornei@nxp.com> | 2020-05-31 00:08:13 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-01 22:04:32 +0300 |
| commit | f395b69f40f580491ef56f2395a98e3189baa53c (patch) | |
| tree | f41edf6ae72fc8ca4d39aa7ff4c49b4eaf350a9b /drivers/net/ethernet/freescale/dpaa2/Kconfig | |
| parent | 3f8b826d705fc6f0f0602fcbe6ee3b646ed3316e (diff) | |
| download | linux-f395b69f40f580491ef56f2395a98e3189baa53c.tar.xz | |
dpaa2-eth: Add PFC support through DCB ops
Add support in dpaa2-eth for PFC (Priority Flow Control)
through the DCB ops.
Instruct the hardware to respond to received PFC frames.
Current firmware doesn't allow us to selectively enable PFC
on the Rx side for some priorities only, so we will react to
all incoming PFC frames (and stop transmitting on the traffic
classes specified in the frame).
Also, configure the hardware to generate PFC frames based on Rx
congestion notifications. When a certain number of frames accumulate in
the ingress queues corresponding to a traffic class, priority flow
control frames are generated for that TC.
The number of PFC traffic classes available can be queried through
lldptool. Also, which of those traffic classes have PFC enabled is also
controlled through the same dcbnl_rtnl_ops callbacks.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/Kconfig')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/Kconfig b/drivers/net/ethernet/freescale/dpaa2/Kconfig index c6fb8e4021ac..feea797cde02 100644 --- a/drivers/net/ethernet/freescale/dpaa2/Kconfig +++ b/drivers/net/ethernet/freescale/dpaa2/Kconfig @@ -9,6 +9,16 @@ config FSL_DPAA2_ETH The driver manages network objects discovered on the Freescale MC bus. +if FSL_DPAA2_ETH +config FSL_DPAA2_ETH_DCB + bool "Data Center Bridging (DCB) Support" + default n + depends on DCB + help + Enable Priority-Based Flow Control (PFC) support for DPAA2 Ethernet + devices. +endif + config FSL_DPAA2_PTP_CLOCK tristate "Freescale DPAA2 PTP Clock" depends on FSL_DPAA2_ETH && PTP_1588_CLOCK_QORIQ |