linux/drivers/infiniband/hw
Roland Dreier cd155c1c7c IB/mlx4: Fix creation of kernel QP with max number of send s/g entries
When creating a kernel QP where the consumer asked for a send queue
with lots of scatter/gater entries, set_kernel_sq_size() incorrectly
returned an error if the send queue stride is larger than the
hardware's maximum send work request descriptor size.  This is not a
problem; the only issue is to make sure that the actual descriptors
used do not overflow the maximum descriptor size, so check this instead.

Clamp the returned max_send_sge value to be no bigger than what
query_device returns for the max_sge to avoid confusing hapless users,
even if the hardware is capable of handling a few more s/g entries.

This bug caused NFS/RDMA mounts to fail when the server adapter used
the mlx4 driver.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-05-20 14:00:02 -07:00
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amso1100
cxgb3
ehca
ipath
mlx4 IB/mlx4: Fix creation of kernel QP with max number of send s/g entries 2008-05-20 14:00:02 -07:00
mthca
nes