IB/uverbs: Increase maximum devices supported

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Some large systems may support more than IB_UVERBS_MAX_DEVICES
(currently 32).

This change allows us to support more devices in a backwards-compatible
manner.  The first IB_UVERBS_MAX_DEVICES keep the same major/minor
device numbers that they've always had.

If there are more than IB_UVERBS_MAX_DEVICES, we then dynamically
request a new major device number (new minors start at 0).

This change increases the maximum number of HCAs to 64 (from 32).

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

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Alexander Chiang 2010-02-02 19:08:09 +00:00 • committed by Roland Dreier

parent ddbd688301

commit 6d6a0e71ee

1 changed files with 50 additions and 6 deletions

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56

drivers/infiniband/core/uverbs_main.c

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