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[v3,0/3] eal: allow hotplug to skip an already probed device

Message ID 20181007220933.4533-1-thomas@monjalon.net (mailing list archive)
Headers

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Thomas Monjalon Oct. 7, 2018, 10:09 p.m. UTC 
  This is a follow-up of an idea presented at Dublin
during the "hotplug talk".

The idea is to ease probing of range of ports attached
to the same rte_device.
I becomes possible to allow probing again the same device
but with a bigger range of ports in the devargs.

Instead of adding a parameter to the hotplug functions, as in the RFC,
the check of an already probed device is moved to the bus and enabled PMDs.
It gives flexibility to drivers for managing range of ports.


This series is based on top of
https://patches.dpdk.org/project/dpdk/list/?series=1734

Depends on: project/dpdk/list/?series=1734
(proposed syntax for dependencies)


Changes in v3 - after Declan's review:
  - return error in all buses but PCI
  - add a PCI driver flag to enable feature per driver
  - return -EEXIST if probing again is not supported


Thomas Monjalon (3):
  drivers/bus: move driver assignment to end of probing
  eal: add function to query device status
  eal: allow probing a device again

 drivers/bus/dpaa/dpaa_bus.c             |  3 ++
 drivers/bus/fslmc/fslmc_bus.c           |  3 ++
 drivers/bus/ifpga/ifpga_bus.c           | 21 +++++++-------
 drivers/bus/pci/pci_common.c            | 38 ++++++++++++++++---------
 drivers/bus/pci/rte_bus_pci.h           |  6 ++--
 drivers/bus/vdev/vdev.c                 | 12 +++++---
 drivers/bus/vmbus/vmbus_common.c        |  5 ++--
 drivers/net/i40e/i40e_vf_representor.c  |  3 --
 drivers/net/mlx4/mlx4.c                 |  1 -
 drivers/net/mlx5/mlx5.c                 |  1 -
 lib/librte_eal/common/eal_common_dev.c  | 14 +++++----
 lib/librte_eal/common/include/rte_dev.h | 18 ++++++++++--
 lib/librte_eal/rte_eal_version.map      |  1 +
 13 files changed, 82 insertions(+), 44 deletions(-)