IB/qib: Default some module parameters optimally

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Minimize the need for users to have to set module parameters to get
good performance.

The following two parameters are changed:
 - rcvhdrcnt to twice the rcvegrcnt
 - pcie_caps=0x51

The rcvhdrcnt at twice the egrcount allows the preemptive NAK code
during reception to function in 100% of the cases rather than a sender
jiffies-based timeout.

The pcie_caps default of 0x51 will set the proposed MaxPayload and
MaxReceiveReqest to 256 and 4096 respectively.  The capabilities on
the root complex will be used to limit those values.

Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

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Mike Marciniszyn 2011-12-23 11:12:10 -05:00 • committed by Roland Dreier

parent 4894710951

commit 8d4548f2b7

2 changed files with 3 additions and 3 deletions

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2

drivers/infiniband/hw/qib/qib_iba7322.c

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4

drivers/infiniband/hw/qib/qib_pcie.c

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