[v4,0/7] make rte_intr_handle internal

  Moving struct rte_intr_handle as an internal structure to
avoid any ABI breakages in future. Since this structure defines
some static arrays and changing respective macros breaks the ABI.
Eg:
Currently RTE_MAX_RXTX_INTR_VEC_ID imposes a limit of maximum 512
MSI-X interrupts that can be defined for a PCI device, while PCI
specification allows maximum 2048 MSI-X interrupts that can be used.
If some PCI device requires more than 512 vectors, either change the
RTE_MAX_RXTX_INTR_VEC_ID limit or dynamically allocate based on
PCI device MSI-X size on probe time. Either way its an ABI breakage.

Change already included in 21.11 ABI improvement spreadsheet (item 42):
https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.google.com_s
preadsheets_d_1betlC000ua5SsSiJIcC54mCCCJnW6voH5Dqv9UxeyfE_edit-23gid-
3D0&d=DwICaQ&c=nKjWec2b6R0mOyPaz7xtfQ&r=5ESHPj7V-7JdkxT_Z_SU6RrS37ys4U
XudBQ_rrS5LRo&m=7dl3OmXU7QHMmWYB6V1hYJtq1cUkjfhXUwze2Si_48c&s=lh6DEGhR
Bg1shODpAy3RQk-H-0uQx5icRfUBf9dtCp4&e=

This series makes struct rte_intr_handle totally opaque to the outside
world by wrapping it inside a .c file and providing get set wrapper APIs
to read or manipulate its fields.. Any changes to be made to any of the
fields should be done via these get set APIs.
Introduced a new eal_common_interrupts.c where all these APIs are defined
and also hides struct rte_intr_handle definition.

Details on each patch of the series:
Patch 1: malloc: introduce malloc is ready API
This patch introduces a new API which tells if DPDK memory
subsystem is initialized and rte_malloc* APIs are ready to be
used. If rte_malloc* are setup, memory for interrupt instance
is allocated using rte_malloc else using traditional heap APIs.

Patch 2: eal/interrupts: implement get set APIs
This patch provides prototypes and implementation of all the new
get set APIs. Alloc APIs are implemented to allocate memory for
interrupt handle instance. Currently most of the drivers defines
interrupt handle instance as static but now it cant be static as
size of rte_intr_handle is unknown to all the drivers. Drivers are
expected to allocate interrupt instances during initialization
and free these instances during cleanup phase.
This patch also rearranges the headers related to interrupt
framework. Epoll related definitions prototypes are moved into a
new header i.e. rte_epoll.h and APIs defined in rte_eal_interrupts.h
which were driver specific are moved to rte_interrupts.h (as anyways
it was accessible and used outside DPDK library. Later in the series
rte_eal_interrupts.h is removed.

Patch 3: eal/interrupts: avoid direct access to interrupt handle
Modifying the interrupt framework for linux and freebsd to use these
get set alloc APIs as per requirement and avoid accessing the fields
directly.

Patch 4: test/interrupt: apply get set interrupt handle APIs
Updating interrupt test suite to use interrupt handle APIs.

Patch 5: drivers: remove direct access to interrupt handle fields
Modifying all the drivers and libraries which are currently directly
accessing the interrupt handle fields. Drivers are expected to
allocated the interrupt instance, use get set APIs with the allocated
interrupt handle and free it on cleanup.

Patch 6: eal/interrupts: make interrupt handle structure opaque
In this patch rte_eal_interrupt.h is removed, struct rte_intr_handle
definition is moved to c file to make it completely opaque. As part of
interrupt handle allocation, array like efds and elist(which are currently
static) are dynamically allocated with default size
(RTE_MAX_RXTX_INTR_VEC_ID). Later these arrays can be reallocated as per
device requirement using new API rte_intr_handle_event_list_update().
Eg, on PCI device probing MSIX size can be queried and these arrays can
be reallocated accordingly.

Patch 7: eal/alarm: introduce alarm fini routine
Introducing alarm fini routine, as the memory allocated for alarm interrupt
instance can be freed in alarm fini.

Testing performed:
1. Validated the series by running interrupts and alarm test suite.
2. Validate l3fwd power functionality with octeontx2 and i40e intel cards,
   where interrupts are expected on packet arrival.

v1:
* Fixed freebsd compilation failure
* Fixed seg fault in case of memif

v2:
* Merged the prototype and implementation patch to 1.
* Restricting allocation of single interrupt instance.
* Removed base APIs, as they were exposing internally
allocated memory information.
* Fixed some memory leak issues.
* Marked some library specific APIs as internal.

v3:
* Removed flag from instance alloc API, rather auto detect
if memory should be allocated using glibc malloc APIs or
rte_malloc*
* Added APIs for get/set windows handle.
* Defined macros for repeated checks.

v4:
* Rectified some typo in the APIs documentation.
* Better names for some internal variables.

Harman Kalra (7):
  malloc: introduce malloc is ready API
  eal/interrupts: implement get set APIs
  eal/interrupts: avoid direct access to interrupt handle
  test/interrupt: apply get set interrupt handle APIs
  drivers: remove direct access to interrupt handle
  eal/interrupts: make interrupt handle structure opaque
  eal/alarm: introduce alarm fini routine

 MAINTAINERS                                   |   1 +
 app/test/test_interrupts.c                    | 162 +++--
 drivers/baseband/acc100/rte_acc100_pmd.c      |  18 +-
 .../fpga_5gnr_fec/rte_fpga_5gnr_fec.c         |  21 +-
 drivers/baseband/fpga_lte_fec/fpga_lte_fec.c  |  21 +-
 drivers/bus/auxiliary/auxiliary_common.c      |   2 +
 drivers/bus/auxiliary/linux/auxiliary.c       |   9 +
 drivers/bus/auxiliary/rte_bus_auxiliary.h     |   2 +-
 drivers/bus/dpaa/dpaa_bus.c                   |  26 +-
 drivers/bus/dpaa/rte_dpaa_bus.h               |   2 +-
 drivers/bus/fslmc/fslmc_bus.c                 |  15 +-
 drivers/bus/fslmc/fslmc_vfio.c                |  32 +-
 drivers/bus/fslmc/portal/dpaa2_hw_dpio.c      |  19 +-
 drivers/bus/fslmc/portal/dpaa2_hw_pvt.h       |   2 +-
 drivers/bus/fslmc/rte_fslmc.h                 |   2 +-
 drivers/bus/ifpga/ifpga_bus.c                 |  14 +-
 drivers/bus/ifpga/rte_bus_ifpga.h             |   2 +-
 drivers/bus/pci/bsd/pci.c                     |  21 +-
 drivers/bus/pci/linux/pci.c                   |   4 +-
 drivers/bus/pci/linux/pci_uio.c               |  73 +-
 drivers/bus/pci/linux/pci_vfio.c              | 115 +++-
 drivers/bus/pci/pci_common.c                  |  27 +-
 drivers/bus/pci/pci_common_uio.c              |  21 +-
 drivers/bus/pci/rte_bus_pci.h                 |   4 +-
 drivers/bus/vmbus/linux/vmbus_bus.c           |   5 +
 drivers/bus/vmbus/linux/vmbus_uio.c           |  37 +-
 drivers/bus/vmbus/rte_bus_vmbus.h             |   2 +-
 drivers/bus/vmbus/vmbus_common_uio.c          |  24 +-
 drivers/common/cnxk/roc_cpt.c                 |   8 +-
 drivers/common/cnxk/roc_dev.c                 |  14 +-
 drivers/common/cnxk/roc_irq.c                 | 108 +--
 drivers/common/cnxk/roc_nix_inl_dev_irq.c     |   8 +-
 drivers/common/cnxk/roc_nix_irq.c             |  36 +-
 drivers/common/cnxk/roc_npa.c                 |   2 +-
 drivers/common/cnxk/roc_platform.h            |  49 +-
 drivers/common/cnxk/roc_sso.c                 |   4 +-
 drivers/common/cnxk/roc_tim.c                 |   4 +-
 drivers/common/octeontx2/otx2_dev.c           |  14 +-
 drivers/common/octeontx2/otx2_irq.c           | 117 ++--
 .../octeontx2/otx2_cryptodev_hw_access.c      |   4 +-
 drivers/event/octeontx2/otx2_evdev_irq.c      |  12 +-
 drivers/mempool/octeontx2/otx2_mempool.c      |   2 +-
 drivers/net/atlantic/atl_ethdev.c             |  20 +-
 drivers/net/avp/avp_ethdev.c                  |   8 +-
 drivers/net/axgbe/axgbe_ethdev.c              |  12 +-
 drivers/net/axgbe/axgbe_mdio.c                |   6 +-
 drivers/net/bnx2x/bnx2x_ethdev.c              |  10 +-
 drivers/net/bnxt/bnxt_ethdev.c                |  33 +-
 drivers/net/bnxt/bnxt_irq.c                   |   4 +-
 drivers/net/dpaa/dpaa_ethdev.c                |  47 +-
 drivers/net/dpaa2/dpaa2_ethdev.c              |  10 +-
 drivers/net/e1000/em_ethdev.c                 |  23 +-
 drivers/net/e1000/igb_ethdev.c                |  79 +--
 drivers/net/ena/ena_ethdev.c                  |  35 +-
 drivers/net/enic/enic_main.c                  |  26 +-
 drivers/net/failsafe/failsafe.c               |  22 +-
 drivers/net/failsafe/failsafe_intr.c          |  43 +-
 drivers/net/failsafe/failsafe_ops.c           |  21 +-
 drivers/net/failsafe/failsafe_private.h       |   2 +-
 drivers/net/fm10k/fm10k_ethdev.c              |  32 +-
 drivers/net/hinic/hinic_pmd_ethdev.c          |  10 +-
 drivers/net/hns3/hns3_ethdev.c                |  57 +-
 drivers/net/hns3/hns3_ethdev_vf.c             |  64 +-
 drivers/net/hns3/hns3_rxtx.c                  |   2 +-
 drivers/net/i40e/i40e_ethdev.c                |  53 +-
 drivers/net/iavf/iavf_ethdev.c                |  42 +-
 drivers/net/iavf/iavf_vchnl.c                 |   4 +-
 drivers/net/ice/ice_dcf.c                     |  10 +-
 drivers/net/ice/ice_dcf_ethdev.c              |  21 +-
 drivers/net/ice/ice_ethdev.c                  |  49 +-
 drivers/net/igc/igc_ethdev.c                  |  45 +-
 drivers/net/ionic/ionic_ethdev.c              |  17 +-
 drivers/net/ixgbe/ixgbe_ethdev.c              |  66 +-
 drivers/net/memif/memif_socket.c              | 108 ++-
 drivers/net/memif/memif_socket.h              |   4 +-
 drivers/net/memif/rte_eth_memif.c             |  59 +-
 drivers/net/memif/rte_eth_memif.h             |   2 +-
 drivers/net/mlx4/mlx4.c                       |  18 +-
 drivers/net/mlx4/mlx4.h                       |   2 +-
 drivers/net/mlx4/mlx4_intr.c                  |  47 +-
 drivers/net/mlx5/linux/mlx5_os.c              |  51 +-
 drivers/net/mlx5/linux/mlx5_socket.c          |  24 +-
 drivers/net/mlx5/mlx5.h                       |   6 +-
 drivers/net/mlx5/mlx5_rxq.c                   |  42 +-
 drivers/net/mlx5/mlx5_trigger.c               |   4 +-
 drivers/net/mlx5/mlx5_txpp.c                  |  25 +-
 drivers/net/netvsc/hn_ethdev.c                |   4 +-
 drivers/net/nfp/nfp_common.c                  |  34 +-
 drivers/net/nfp/nfp_ethdev.c                  |  13 +-
 drivers/net/nfp/nfp_ethdev_vf.c               |  13 +-
 drivers/net/ngbe/ngbe_ethdev.c                |  29 +-
 drivers/net/octeontx2/otx2_ethdev_irq.c       |  35 +-
 drivers/net/qede/qede_ethdev.c                |  16 +-
 drivers/net/sfc/sfc_intr.c                    |  30 +-
 drivers/net/tap/rte_eth_tap.c                 |  35 +-
 drivers/net/tap/rte_eth_tap.h                 |   2 +-
 drivers/net/tap/tap_intr.c                    |  32 +-
 drivers/net/thunderx/nicvf_ethdev.c           |  11 +
 drivers/net/thunderx/nicvf_struct.h           |   2 +-
 drivers/net/txgbe/txgbe_ethdev.c              |  34 +-
 drivers/net/txgbe/txgbe_ethdev_vf.c           |  33 +-
 drivers/net/vhost/rte_eth_vhost.c             |  75 +-
 drivers/net/virtio/virtio_ethdev.c            |  21 +-
 .../net/virtio/virtio_user/virtio_user_dev.c  |  47 +-
 drivers/net/vmxnet3/vmxnet3_ethdev.c          |  43 +-
 drivers/raw/ifpga/ifpga_rawdev.c              |  61 +-
 drivers/raw/ntb/ntb.c                         |   9 +-
 .../regex/octeontx2/otx2_regexdev_hw_access.c |   4 +-
 drivers/vdpa/ifc/ifcvf_vdpa.c                 |   5 +-
 drivers/vdpa/mlx5/mlx5_vdpa.c                 |   9 +
 drivers/vdpa/mlx5/mlx5_vdpa.h                 |   4 +-
 drivers/vdpa/mlx5/mlx5_vdpa_event.c           |  22 +-
 drivers/vdpa/mlx5/mlx5_vdpa_virtq.c           |  44 +-
 lib/bbdev/rte_bbdev.c                         |   4 +-
 lib/eal/common/eal_common_interrupts.c        | 585 ++++++++++++++++
 lib/eal/common/eal_private.h                  |  11 +
 lib/eal/common/malloc_heap.c                  |  19 +-
 lib/eal/common/malloc_heap.h                  |   3 +
 lib/eal/common/meson.build                    |   1 +
 lib/eal/freebsd/eal.c                         |   1 +
 lib/eal/freebsd/eal_alarm.c                   |  52 +-
 lib/eal/freebsd/eal_interrupts.c              |  92 ++-
 lib/eal/include/meson.build                   |   2 +-
 lib/eal/include/rte_eal_interrupts.h          | 269 --------
 lib/eal/include/rte_eal_trace.h               |  24 +-
 lib/eal/include/rte_epoll.h                   | 118 ++++
 lib/eal/include/rte_interrupts.h              | 648 +++++++++++++++++-
 lib/eal/linux/eal.c                           |   1 +
 lib/eal/linux/eal_alarm.c                     |  37 +-
 lib/eal/linux/eal_dev.c                       |  63 +-
 lib/eal/linux/eal_interrupts.c                | 287 +++++---
 lib/eal/version.map                           |  47 +-
 lib/ethdev/ethdev_pci.h                       |   2 +-
 lib/ethdev/rte_ethdev.c                       |  14 +-
 134 files changed, 3568 insertions(+), 1709 deletions(-)
 create mode 100644 lib/eal/common/eal_common_interrupts.c
 delete mode 100644 lib/eal/include/rte_eal_interrupts.h
 create mode 100644 lib/eal/include/rte_epoll.h