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* [dpdk-dev] [PATCH v3 00/14] vDPA API and framework rework
@ 2020-06-26 14:04 Maxime Coquelin
  2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 01/14] bus/dpaa: fix null pointer dereference Maxime Coquelin
                   ` (14 more replies)
  0 siblings, 15 replies; 22+ messages in thread
From: Maxime Coquelin @ 2020-06-26 14:04 UTC (permalink / raw)
  To: matan, xiao.w.wang, zhihong.wang, chenbo.xia, david.marchand,
	amorenoz, viacheslavo, hemant.agrawal, sachin.saxena, grive, dev
  Cc: Maxime Coquelin

This series aims to rework the vDPA framework and
its API to better fit into the DPDK device model
and also be more easily consumable by applications.

Main changes are creating a device class for vDPA,
which enables applications to iterate vDPA devices
in a generic way:

RTE_DEV_FOREACH(dev, "class=vdpa", it) {...}

Also the notion of vDPA device ID is replaced
with both application & drivers using the
rte_vdpa_device as reference. Doing that also
made possible to store devices references into
a linked list instead of a static array. Last
patch makes the rte_vdpa_device structure
content opaque to the applications, creating
a clear barrier between application visible
API and drivers visble ones.

The first two patches fixes issues in some
busses iterators, causing segmentation faults
when iterating only on a device class.

While reviewing, if you notice further possible
improvements, please let me know. Target is to
remove the experimental tag from vDPA APIs in
next LTS release.

Thanks to David for giving me some ideas of
improvements!

Changes since v3:
-----------------
- Fix double lock in unregister API (Adrian)
- Apply Acked-by's

Changes since v2:
-----------------
- Remove useless new line in error messages (Adrian)
- Use strncmp fo dev name comparisons (Adrian)
- Apply Adrian Acked-by's

Changes since v1:
-----------------
- Rebase on top of net-next
- Use rte_pci_addr_cmp() instead of comparing pci dev pointers (Gaëtan)
- Use proper types for calculating device ID (Gaëtan)

Maxime Coquelin (14):
  bus/dpaa: fix null pointer dereference
  bus/fslmc: fix null pointer dereference
  vhost: introduce vDPA devices class
  vhost: make vDPA framework bus agnostic
  vhost: replace device ID in vDPA ops
  vhost: replace vDPA device ID in Vhost
  vhost: replace device ID in applications
  vhost: remove useless vDPA API
  vhost: use linked-list for vDPA devices
  vhost: introduce wrappers for some vDPA ops
  examples/vdpa: use new wrappers instead of ops
  examples/vdpa: remove useless device count
  vhost: remove vDPA device count API
  vhost: split vDPA header file

 drivers/bus/dpaa/dpaa_bus.c            |   5 +
 drivers/bus/fslmc/fslmc_bus.c          |   5 +
 drivers/vdpa/ifc/ifcvf_vdpa.c          |  87 ++++----
 drivers/vdpa/mlx5/mlx5_vdpa.c          | 134 ++++++------
 drivers/vdpa/mlx5/mlx5_vdpa.h          |   5 +-
 examples/vdpa/main.c                   | 149 +++++++-------
 lib/librte_vhost/Makefile              |   3 +-
 lib/librte_vhost/meson.build           |   3 +-
 lib/librte_vhost/rte_vdpa.h            | 188 +++++------------
 lib/librte_vhost/rte_vdpa_dev.h        | 147 +++++++++++++
 lib/librte_vhost/rte_vhost.h           |  20 +-
 lib/librte_vhost/rte_vhost_version.map |  11 +-
 lib/librte_vhost/socket.c              |  48 ++---
 lib/librte_vhost/vdpa.c                | 275 +++++++++++++++----------
 lib/librte_vhost/vhost.c               |  19 +-
 lib/librte_vhost/vhost.h               |   9 +-
 lib/librte_vhost/vhost_user.c          |  28 +--
 17 files changed, 634 insertions(+), 502 deletions(-)
 create mode 100644 lib/librte_vhost/rte_vdpa_dev.h

-- 
2.26.2


^ permalink raw reply	[flat|nested] 22+ messages in thread
* [dpdk-dev] [PATCH v3 00/14] vDPA API and framework rework
@ 2020-06-26 13:26 Maxime Coquelin
  2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 14/14] vhost: split vDPA header file Maxime Coquelin
  0 siblings, 1 reply; 22+ messages in thread
From: Maxime Coquelin @ 2020-06-26 13:26 UTC (permalink / raw)
  To: matan, xiao.w.wang, zhihong.wang, chenbo.xia, david.marchand,
	amorenoz, viacheslavo, hemant.agrawal, sachin.saxena, grive, dev
  Cc: Maxime Coquelin

This series aims to rework the vDPA framework and
its API to better fit into the DPDK device model
and also be more easily consumable by applications.

Main changes are creating a device class for vDPA,
which enables applications to iterate vDPA devices
in a generic way:

RTE_DEV_FOREACH(dev, "class=vdpa", it) {...}

Also the notion of vDPA device ID is replaced
with both application & drivers using the
rte_vdpa_device as reference. Doing that also
made possible to store devices references into
a linked list instead of a static array. Last
patch makes the rte_vdpa_device structure
content opaque to the applications, creating
a clear barrier between application visible
API and drivers visble ones.

The first two patches fixes issues in some
busses iterators, causing segmentation faults
when iterating only on a device class.

While reviewing, if you notice further possible
improvements, please let me know. Target is to
remove the experimental tag from vDPA APIs in
next LTS release.

Thanks to David for giving me some ideas of
improvements!

Changes since v2:
-----------------
- Remove useless new line in error messages (Adrian)
- Use strncmp fo dev name comparisons (Adrian)
- Apply Adrian Acked-by's

Changes since v1:
-----------------
- Rebase on top of net-next
- Use rte_pci_addr_cmp() instead of comparing pci dev pointers (Gaëtan)
- Use proper types for calculating device ID (Gaëtan)

Maxime Coquelin (14):
  bus/dpaa: fix null pointer dereference
  bus/fslmc: fix null pointer dereference
  vhost: introduce vDPA devices class
  vhost: make vDPA framework bus agnostic
  vhost: replace device ID in vDPA ops
  vhost: replace vDPA device ID in Vhost
  vhost: replace device ID in applications
  vhost: remove useless vDPA API
  vhost: use linked-list for vDPA devices
  vhost: introduce wrappers for some vDPA ops
  examples/vdpa: use new wrappers instead of ops
  examples/vdpa: remove useless device count
  vhost: remove vDPA device count API
  vhost: split vDPA header file

 drivers/bus/dpaa/dpaa_bus.c            |   5 +
 drivers/bus/fslmc/fslmc_bus.c          |   5 +
 drivers/vdpa/ifc/ifcvf_vdpa.c          |  87 ++++----
 drivers/vdpa/mlx5/mlx5_vdpa.c          | 134 ++++++------
 drivers/vdpa/mlx5/mlx5_vdpa.h          |   5 +-
 examples/vdpa/main.c                   | 149 +++++++-------
 lib/librte_vhost/Makefile              |   3 +-
 lib/librte_vhost/meson.build           |   3 +-
 lib/librte_vhost/rte_vdpa.h            | 188 +++++------------
 lib/librte_vhost/rte_vdpa_dev.h        | 147 +++++++++++++
 lib/librte_vhost/rte_vhost.h           |  20 +-
 lib/librte_vhost/rte_vhost_version.map |  11 +-
 lib/librte_vhost/socket.c              |  48 ++---
 lib/librte_vhost/vdpa.c                | 275 +++++++++++++++----------
 lib/librte_vhost/vhost.c               |  19 +-
 lib/librte_vhost/vhost.h               |   9 +-
 lib/librte_vhost/vhost_user.c          |  28 +--
 17 files changed, 634 insertions(+), 502 deletions(-)
 create mode 100644 lib/librte_vhost/rte_vdpa_dev.h

-- 
2.26.2


^ permalink raw reply	[flat|nested] 22+ messages in thread

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Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-26 14:04 [dpdk-dev] [PATCH v3 00/14] vDPA API and framework rework Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 01/14] bus/dpaa: fix null pointer dereference Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 02/14] bus/fslmc: " Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 03/14] vhost: introduce vDPA devices class Maxime Coquelin
2020-06-29 14:48   ` Ferruh Yigit
2020-06-29 16:23     ` Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 04/14] vhost: make vDPA framework bus agnostic Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 05/14] vhost: replace device ID in vDPA ops Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 06/14] vhost: replace vDPA device ID in Vhost Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 07/14] vhost: replace device ID in applications Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 08/14] vhost: remove useless vDPA API Maxime Coquelin
2020-06-29 14:48   ` Ferruh Yigit
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 09/14] vhost: use linked-list for vDPA devices Maxime Coquelin
2020-06-26 14:46   ` Adrian Moreno
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 10/14] vhost: introduce wrappers for some vDPA ops Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 11/14] examples/vdpa: use new wrappers instead of ops Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 12/14] examples/vdpa: remove useless device count Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 13/14] vhost: remove vDPA device count API Maxime Coquelin
2020-06-26 14:04 ` [dpdk-dev] [PATCH v3 14/14] vhost: split vDPA header file Maxime Coquelin
2020-06-26 14:47 ` [dpdk-dev] [PATCH v3 00/14] vDPA API and framework rework Adrian Moreno
2020-06-29  9:02   ` Maxime Coquelin
  -- strict thread matches above, loose matches on Subject: below --
2020-06-26 13:26 Maxime Coquelin
2020-06-26 13:27 ` [dpdk-dev] [PATCH v3 14/14] vhost: split vDPA header file Maxime Coquelin

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