diff options
| author | Claudiu Manoil <claudiu.manoil@nxp.com> | 2020-03-10 15:51:24 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-11 01:48:54 +0300 |
| commit | 434cebabd3a2470881dd69fe65c0986c470b6fb8 (patch) | |
| tree | 363680c0ab8decb5043ea42f1f7ceb268885845c /drivers/net/ethernet/freescale/enetc/Kconfig | |
| parent | 714239ac630a85919839f200d4499b7f811c7003 (diff) | |
| download | linux-434cebabd3a2470881dd69fe65c0986c470b6fb8.tar.xz | |
enetc: Add dynamic allocation of extended Rx BD rings
Hardware timestamping support (PTP) on Rx requires extended
buffer descriptors, double the size of normal Rx descriptors.
On the current controller revision only the timestamping offload
requires extended Rx descriptors.
Since Rx timestamping can be turned on/off at runtime, make Rx ring
allocation configurable at runtime too. As a result, the static
config option FSL_ENETC_HW_TIMESTAMPING can be dropped and the
extended descriptors can be used only when Rx timestamping gets
activated.
The extension has the same size as the base descriptor, making
the descriptor iterators easy to update for the extended case.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/enetc/Kconfig')
| -rw-r--r-- | drivers/net/ethernet/freescale/enetc/Kconfig | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/Kconfig b/drivers/net/ethernet/freescale/enetc/Kconfig index f86283411f4d..2b43848e1363 100644 --- a/drivers/net/ethernet/freescale/enetc/Kconfig +++ b/drivers/net/ethernet/freescale/enetc/Kconfig @@ -42,16 +42,6 @@ config FSL_ENETC_PTP_CLOCK If compiled as module (M), the module name is fsl-enetc-ptp. -config FSL_ENETC_HW_TIMESTAMPING - bool "ENETC hardware timestamping support" - depends on FSL_ENETC || FSL_ENETC_VF - help - Enable hardware timestamping support on the Ethernet packets - using the SO_TIMESTAMPING API. Because the RX BD ring dynamic - allocation has not been supported and it is too expensive to use - extended RX BDs if timestamping is not used, this option enables - extended RX BDs in order to support hardware timestamping. - config FSL_ENETC_QOS bool "ENETC hardware Time-sensitive Network support" depends on (FSL_ENETC || FSL_ENETC_VF) && (NET_SCH_TAPRIO || NET_SCH_CBS) |