[dpdk-dev] [PATCH v2 00/55] Solarflare libefx-based PMD

[Ferruh Yigit]

On 11/29/2016 4:18 PM, Andrew Rybchenko wrote:
> The patch series adds Solarflare libefx-based network PMD.
> 
> This version of the driver supports Solarflare SFN7xxx and SFN8xxx
> families of 10/40 Gbps adapters.
> 
> libefx is a platform-independent library to implement drivers for
> Solarflare network adapters. It provides unified adapter family
> independent interface (if possible). FreeBSD [1] and illumos [2]
> drivers are built on top of the library.
> 
> The patch series could be logically structured into 5 sub-series:
>  1. (1) add the driver skeleton including documentation
>  2. (2-30) import libefx and include it in build with the latest patch
>  3. (31-42) implement minimal device level operations in steps
>  4. (43-50) implement Rx subsystem
>  5. (51-55) implement Tx subsystem
> 
> Functional driver with multi-queue support capable to send and receive
> traffic appears with the last patch in the series.
> 
> The following design decisions are made during development:
> 
>  1. Since libefx uses positive errno return codes, positive errno
>     return codes are used inside the driver and coversion to negative
>     is done on return from eth_dev_ops callbacks. We think that it
>     is the less error-prone way.
> 
>  2. Own event queue (a way to deliver events from HW to host CPU) is
>     used for house-keeping (e.g. link status notifications), each Tx
>     and each Rx queue. No locks on datapath are requires in this case.
> 
>  3. Alarm is used to periodically poll house-keeping event queue.
>     The event queue is used to deliver link status change notifications,
>     Rx/Tx queue flush events, SRAM events. It is not used on datapath.
>     The event queue polling is protected using spin-lock since
>     concurrent access from different contexts is possible (e.g. device
>     stop when polling alarm is running).
> 
> [1] https://svnweb.freebsd.org/base/head/sys/dev/sfxge/common/
> [2] https://github.com/illumos/illumos-gate/tree/master/usr/src/uts/common/io/sfxge/common/
> 
> ---
> 
> v2:
> * Fix spelling
> * Fix ICC and clang build warnings
> * Remove efx subdirectory
> * Fix bug in Makefile which results in duplication of warnings options
> * Use WERROR_FLAGS and remove warnings disabling for the PMD itself
> * Comment enabled EFSYS_OPT_
> * Use space after #define instead of TAB
> * Update version map to upcoming release
> * Use bool for boolean_t in efsys.h
> 
> 
> Andrew Rybchenko (48):
>   net/sfc: libefx-based PMD stub sufficient to build and init
>   net/sfc: import libefx base
>   net/sfc: import libefx register definitions
>   net/sfc: import libefx filters support
>   net/sfc: import libefx MCDI definition
>   net/sfc: import libefx MCDI implementation
>   net/sfc: import libefx MCDI logging support
>   net/sfc: import libefx MCDI proxy authorization support
>   net/sfc: import libefx 5xxx/6xxx family support
>   net/sfc: import libefx SFN7xxx family support
>   net/sfc: import libefx SFN8xxx family support
>   net/sfc: import libefx diagnostics support
>   net/sfc: import libefx built-in selftest support
>   net/sfc: import libefx software per-queue statistics support
>   net/sfc: import libefx PHY flags control support
>   net/sfc: import libefx PHY statistics support
>   net/sfc: import libefx PHY LEDs control support
>   net/sfc: import libefx MAC statistics support
>   net/sfc: import libefx event prefetch support
>   net/sfc: import libefx Rx scatter support
>   net/sfc: import libefx RSS support
>   net/sfc: import libefx loopback control support
>   net/sfc: import libefx monitors statistics support
>   net/sfc: import libefx support to access monitors via MCDI
>   net/sfc: import libefx support for Rx packed stream mode
>   net/sfc: import libefx NVRAM support
>   net/sfc: import libefx VPD support
>   net/sfc: import libefx bootrom configuration support
>   net/sfc: import libefx licensing support
>   net/sfc: implement driver operation to init device on attach
>   net/sfc: add device configure and close stubs
>   net/sfc: add device configuration checks
>   net/sfc: implement device start and stop operations
>   net/sfc: make available resources estimation and allocation
>   net/sfc: interrupts support sufficient for event queue init
>   net/sfc: implement event queue support
>   net/sfc: implement EVQ dummy exception handling
>   net/sfc: maintain management event queue
>   net/sfc: periodic management EVQ polling using alarm
>   net/sfc: minimum port control sufficient to receive traffic
>   net/sfc: implement Rx subsystem stubs
>   net/sfc: check configured rxmode
>   net/sfc: implement Rx queue setup release operations
>   net/sfc: calculate Rx buffer size which may be used
>   net/sfc: validate Rx queue buffers setup
>   net/sfc: implement Rx queue start and stop operations
>   net/sfc: implement device callback to Rx burst of packets
>   net/sfc: discard scattered packet on Rx correctly
> 
> Artem Andreev (2):
>   net/sfc: include libefx in build
>   net/sfc: implement device operation to retrieve link info
> 
> Ivan Malov (5):
>   net/sfc: provide basic stubs for Tx subsystem
>   net/sfc: add function to check configured Tx mode
>   net/sfc: add callbacks to set up and release Tx queues
>   net/sfc: implement transmit path start / stop
>   net/sfc: add callback to send bursts of packets
> 

Series Reviewed-by: Ferruh Yigit <ferruh.yigit at intel.com>