IB/umad: Add P_Key index support

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Add support for setting the P_Key index of sent MADs and getting the
P_Key index of received MADs.  This requires a change to the layout of
the ABI structure struct ib_user_mad_hdr, so to avoid breaking
compatibility, we default to the old (unchanged) ABI and add a new
ioctl IB_USER_MAD_ENABLE_PKEY that allows applications that are aware
of the new ABI to opt into using it.

We plan on switching to the new ABI by default in a year or so, and
this patch adds a warning that is printed when an application uses the
old ABI, to push people towards converting to the new ABI.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Hal Rosenstock <hal@xsigo.com>

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This commit is contained in:

Roland Dreier 2007-10-09 19:59:15 -07:00

parent c01759cee9

commit 2be8e3ee8e

3 changed files with 135 additions and 29 deletions

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14

Documentation/infiniband/user_mad.txt

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102

drivers/infiniband/core/user_mad.c

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50

include/rdma/ib_user_mad.h

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