common/sfc_efx/base: support to enable VLAN stripping

To enable VLAN stripping, two conditions must be met:
the corresponding flag must be set and the appropriate
Rx prefix should be requested.
VLAN

common/sfc_efx/base: support to enable VLAN stripping

To enable VLAN stripping, two conditions must be met:
the corresponding flag must be set and the appropriate
Rx prefix should be requested.
VLAN stripping is supported on EF100.

Signed-off-by: Artemii Morozov <artemii.morozov@arknetworks.am>
Reviewed-by: Ivan Malov <ivan.malov@arknetworks.am>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

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common/sfc_efx/base: fix Rx queue without RSS hash prefix

If the prefix for the RSS hash was not chosen the ENOTSUP error should
be returned.

Before this patch success was returned for this case ca

common/sfc_efx/base: fix Rx queue without RSS hash prefix

If the prefix for the RSS hash was not chosen the ENOTSUP error should
be returned.

Before this patch success was returned for this case causing Rx queue
creation to fail.

Fixing return value to indicate failure.

Fixes: f784cdc5cbb1 ("common/sfc_efx/base: provide control to deliver RSS hash")
Cc: stable@dpdk.org

Signed-off-by: Artemii Morozov <artemii.morozov@arknetworks.am>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

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common/sfc_efx/base: report maximum Rx data count

Such information is useful to client drivers which deal with
large Rx pool buffers (16-bit wide data count) and thus need
to avoid overflow when set

common/sfc_efx/base: report maximum Rx data count

Such information is useful to client drivers which deal with
large Rx pool buffers (16-bit wide data count) and thus need
to avoid overflow when setting EF10's 14-bit wide data count.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

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common/sfc_efx/base: support even spread RSS mode

Riverhead boards support spreading traffic across the
specified number of queues without using indirections.
This mode is provided by a dedicated RS

common/sfc_efx/base: support even spread RSS mode

Riverhead boards support spreading traffic across the
specified number of queues without using indirections.
This mode is provided by a dedicated RSS context type.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: support selecting RSS table entry count

On Riverhead boards, the client can control how many entries
to have in the indirection table of an exclusive RSS context.

Provide the n

common/sfc_efx/base: support selecting RSS table entry count

On Riverhead boards, the client can control how many entries
to have in the indirection table of an exclusive RSS context.

Provide the new parameter to clients and indicate its bounds.
Extend the API for writing the table to have the flexibility.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: refactor RSS table entry count name

In the existing code, "n" is hardly a clear name for that.
Use a clearer name to help future maintainers of the code.

Signed-off-by: Ivan Ma

common/sfc_efx/base: refactor RSS table entry count name

In the existing code, "n" is hardly a clear name for that.
Use a clearer name to help future maintainers of the code.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: add ingress m-port RxQ flag

Add a flag to request support for ingress m-port on an RxQ.
Implement it only for Riverhead, other families will return an error
if the flag is set.

common/sfc_efx/base: add ingress m-port RxQ flag

Add a flag to request support for ingress m-port on an RxQ.
Implement it only for Riverhead, other families will return an error
if the flag is set.

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>

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common/sfc_efx: update copyright year

Bump copyright year to 2021.

Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

common/sfc_efx/base: provide helper to check Rx prefix

A new function allows to check if used Rx prefix layout matches
available Rx prefix layout. Length check is out-of-scope of the
function and ca

common/sfc_efx/base: provide helper to check Rx prefix

A new function allows to check if used Rx prefix layout matches
available Rx prefix layout. Length check is out-of-scope of the
function and caller should ensure length is either checked or
different length with everything required in place is handled
properly.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

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common/sfc_efx/base: provide control to deliver RSS hash

When Rx queue is created, allow to specify if the driver would like
to get RSS hash value calculated by the hardware.

Use the flag to choose

common/sfc_efx/base: provide control to deliver RSS hash

When Rx queue is created, allow to specify if the driver would like
to get RSS hash value calculated by the hardware.

Use the flag to choose Rx prefix on Riverhead.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: add API to get Rx prefix information

Define default Siena, EF10 default, packed stream, equal-stride
superbuffer and Riverhead default prefixes in order to make an API
to get Rx

common/sfc_efx/base: add API to get Rx prefix information

Define default Siena, EF10 default, packed stream, equal-stride
superbuffer and Riverhead default prefixes in order to make an API
to get Rx prefix layout information generic and usable on all NICs.

Riverhead supports many Rx prefixes. Riverhead FW supports MCDI to
choose Rx prefix based on required Rx prefix fields and allows to
query the prefix layout using MCDI. The patch prepares to introduce
the support in libefx and provides fallback for NICs and FW which
lacks the support.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: fix Tx descriptor DMA sync on Riverhead

Rx/Tx queue DMA sync should not assume descriptor size to be the same
for all NIC familties since it Tx descritor size is 16 on Riverhead

common/sfc_efx/base: fix Tx descriptor DMA sync on Riverhead

Rx/Tx queue DMA sync should not assume descriptor size to be the same
for all NIC familties since it Tx descritor size is 16 on Riverhead.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: implement Rx control path for Riverhead

Reuse EF10 RSS-related functions since current version of the RSS
interface is compatible with EF10.

Implement own functions to create a

common/sfc_efx/base: implement Rx control path for Riverhead

Reuse EF10 RSS-related functions since current version of the RSS
interface is compatible with EF10.

Implement own functions to create and destroy Rx queues which reuse
MCDI wrappers which are shared with EF10.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: move Rx index check to generic code

Make NIC family specific functions a bit shorter and reduce
code duplication.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Re

common/sfc_efx/base: move Rx index check to generic code

Make NIC family specific functions a bit shorter and reduce
code duplication.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: free Rx queue structure in generic code

Rx queue structure is allocated in generic code, but was freed in NIC
family specific callbacks. Move free to generic function makes NIC

common/sfc_efx/base: free Rx queue structure in generic code

Rx queue structure is allocated in generic code, but was freed in NIC
family specific callbacks. Move free to generic function makes NIC
family specific callbacks shorter and reduces code duplication.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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common/sfc_efx/base: maintain RxQ counter in generic code

The counter is incremented in generic efx_rx_qcreate(), but was
asserted and decremented in NIC family specific queue create and
destroy cal

common/sfc_efx/base: maintain RxQ counter in generic code

The counter is incremented in generic efx_rx_qcreate(), but was
asserted and decremented in NIC family specific queue create and
destroy callbacks. Move assert and decrement to generic functions
as well to make NIC family specific callbacks shorter.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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net/sfc: introduce common driver library

Move libefx (base driver) into common driver.

Prepare to add vDPA driver which will use the common driver as well.

Signed-off-by: Andrew Rybchenko <arybche

net/sfc: introduce common driver library

Move libefx (base driver) into common driver.

Prepare to add vDPA driver which will use the common driver as well.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>

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