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Subject[PATCH V2 net-next 0/3] net: hns3: Refactors "reset" handling code in HCLGE layer of HNS3 driver
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This patch refactors the code of the reset feature in HCLGE layer
of HNS3 PF driver. Prime motivation to do this change is:
1. To reduce the time for which common miscellaneous Vector 0
interrupt is disabled because of the reset. Simplification
of the common miscellaneous interrupt handler routine(for
Vector 0) used to handle reset and other sources of Vector
0 interrupt.
2. Separate the task for handling the reset
3. Simplification of reset request submission and pending reset
logic.


To achieve above below few things have been done:
1. Interrupt is disabled while common miscellaneous interrupt
handler is entered and re-enabled before it is exit. This
reduces the interrupt handling latency as compared to older
interrupt handling scheme where interrupt was being disabled
in interrupt handler context and re-enabled in task context
some time later. Made Miscellaneous interrupt handler more
generic to handle all sources including reset interrupt source.
2. New reset service task has been introduced to service the
reset handling.
3. Introduces new reset service task for honoring software reset
requests like from network stack related to timeout and serving
the pending reset request(to reset the driver and associated
clients).


Change Log:
Patch V2: Addressed comment by Andrew Lunn
Link: https://lkml.org/lkml/2017/12/1/366
Patch V1: Initial Submit

Salil Mehta (3):
net: hns3: Refactor of the reset interrupt handling logic
net: hns3: Add reset service task for handling reset requests
net: hns3: Refactors the requested reset & pending reset handling code

.../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 222 ++++++++++++++-------
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 12 +-
2 files changed, 166 insertions(+), 68 deletions(-)

--
2.11.0


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