[dpdk-dev] [PATCH v5 00/14] Wind River Systems AVP PMD
Allain Legacy
allain.legacy at windriver.com
Thu Mar 23 12:23:59 CET 2017
This patch series submits an initial version of the AVP PMD from Wind River
Systems. The series includes shared header files, driver implementation,
and changes to documentation files in support of this new driver. The AVP
driver is a shared memory based device. It is intended to be used as a PMD
within a virtual machine running on a Wind River virtualization platform.
See: http://www.windriver.com/products/titanium-cloud/
It enables optimized packet throughput without requiring any packet
processing in qemu. This allowed us to provide our customers with a
significant performance increase for both DPDK and non-DPDK applications
in the VM. Since our AVP implementation supports VM live-migration it
is viewed as a better alternative to PCI passthrough or PCI SRIOV since
neither of those support VM live-migration without manual intervention
or significant performance penalties.
Since the initial implementation of AVP devices, vhost-user has become part
of the qemu offering with a significant performance increase over the
original virtio implementation. However, vhost-user still does not achieve
the level of performance that the AVP device can provide to our customers
for DPDK based guests.
A number of our customers have requested that we upstream the driver to
dpdk.org.
v2:
* Fixed coding style violations that slipped in accidentally because of an
out of date checkpatch.pl from an older kernel.
v3:
* Updated 17.05 release notes to add a section for this new PMD
* Added additional info to the AVP nic guide document to clarify the
benefit of using AVP over virtio.
* Fixed spelling error in debug log missed by local checkpatch.pl version
* Split the transmit patch to separate the stats functions as they
accidentally got squashed in the last patchset.
* Fixed debug log strings so that they exceed 80 characters rather than
span multiple lines.
* Renamed RTE_AVP_* defines that were in avp_ethdev.h to be AVP_* instead
* Replaced usage of RTE_WRITE32 and RTE_READ32 with rte_write32_relaxed
and rte_read32_relaxed.
* Declared rte_pci_id table as const
v4:
* Split our interrupt handlers to a separate patch and moved to the end
of the series.
* Removed memset() from stats_get API
* Removed usage of RTE_AVP_ALIGNMENT
* Removed unnecessary parentheses in rte_avp_common.h
* Removed unneeded "goto unlock" where there are no statements in between
the goto and the end of the function.
* Re-tested with pktgen and found that rte_eth_tx_burst() is being called
with 0 packets even before starting traffic which resulted in
incrementing oerrors; fixed in transmit patch.
v5:
* Updated documentation to remove references to ivshmem as it lead to
confusion about whether AVP is exactly like ivshmem or simply based on
how ivshmem exports memory to a VM via a PCI device.
* Restructured first set of patches to condense them down to a base patch
with the files needed to apply subsequent patches.
* Removed static prototypes from init/uninit functions in avp_ethdev.c
* Moved MAC addresses init to the device initialization patch because it
is setup by the avp_dev_create() function.
* Split the changes to the avp.ini features file so that features are
marked as enabled in the patch that actually enables them.
Allain Legacy (14):
drivers/net: adds AVP PMD base files
net/avp: public header files
net/avp: debug log macros
net/avp: driver registration
net/avp: device initialization
net/avp: device configuration
net/avp: queue setup and release
net/avp: packet receive functions
net/avp: packet transmit functions
net/avp: device statistics operations
net/avp: device promiscuous functions
net/avp: device start and stop operations
net/avp: migration interrupt handling
doc: adds information related to the AVP PMD
MAINTAINERS | 6 +
config/common_base | 9 +
config/common_linuxapp | 1 +
config/defconfig_i686-native-linuxapp-gcc | 5 +
config/defconfig_i686-native-linuxapp-icc | 5 +
config/defconfig_x86_x32-native-linuxapp-gcc | 5 +
doc/guides/nics/avp.rst | 107 ++
doc/guides/nics/features/avp.ini | 16 +
doc/guides/nics/index.rst | 1 +
doc/guides/rel_notes/release_17_05.rst | 5 +
drivers/net/Makefile | 1 +
drivers/net/avp/Makefile | 61 +
drivers/net/avp/avp_ethdev.c | 2294 ++++++++++++++++++++++++++
drivers/net/avp/avp_logs.h | 59 +
drivers/net/avp/rte_avp_common.h | 416 +++++
drivers/net/avp/rte_avp_fifo.h | 157 ++
drivers/net/avp/rte_pmd_avp_version.map | 4 +
mk/rte.app.mk | 1 +
18 files changed, 3153 insertions(+)
create mode 100644 doc/guides/nics/avp.rst
create mode 100644 doc/guides/nics/features/avp.ini
create mode 100644 drivers/net/avp/Makefile
create mode 100644 drivers/net/avp/avp_ethdev.c
create mode 100644 drivers/net/avp/avp_logs.h
create mode 100644 drivers/net/avp/rte_avp_common.h
create mode 100644 drivers/net/avp/rte_avp_fifo.h
create mode 100644 drivers/net/avp/rte_pmd_avp_version.map
--
1.8.3.1
More information about the dev
mailing list