[dpdk-dev] [PATCH v2 00/55] Solarflare libefx-based PMD
Ferruh Yigit
ferruh.yigit at intel.com
Mon Dec 5 14:38:35 CET 2016
On 12/2/2016 2:55 PM, Ferruh Yigit wrote:
> 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>
Series applied to dpdk-next-net/master, thanks.
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