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doc: announce hiding interrupt handle structure

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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.

Discussion thread:
https://mails.dpdk.org/archives/dev/2021-March/202959.html

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: Chenbo Xia <chenbo.xia@intel.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
This commit is contained in:
Harman Kalra 2021-08-02 21:33:52 +05:30 committed by Thomas Monjalon
parent d7595795b7
commit ba8a263696
1 changed files with 3 additions and 0 deletions
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3
doc/guides/rel_notes/deprecation.rst
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@ -17,6 +17,9 @@ Deprecation Notices
* eal: The function ``rte_eal_remote_launch`` will return new error codes
after read or write error on the pipe, instead of calling ``rte_panic``.
* eal: Making ``struct rte_intr_handle`` internal to avoid any ABI breakages
in future.
* rte_atomicNN_xxx: These APIs do not take memory order parameter. This does
not allow for writing optimized code for all the CPU architectures supported
in DPDK. DPDK has adopted the atomic operations from