IB/mlx4: Sanity check userspace send queue sizes

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Add sanity checks to send queue sizes passed in from userspace. The
minimum sq stride value below is taken from the MT25408 PRM (section
11.10, Table 306, log_sq_stride definition).

Without this check, userspace can submit arbitrarily large/small
values for the number of WQEs and the stride, which can crash the
kernel.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

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Jack Morgenstein 2007-10-18 17:36:43 +02:00 • committed by Roland Dreier

parent fd312561ad

commit 839041329f

1 changed files with 14 additions and 2 deletions

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drivers/infiniband/hw/mlx4/qp.c

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