Re: [PATCH 5/13] cxgb3 - Expose HW memory page info

From: Divy Le Ray
Date: Tue Aug 14 2007 - 19:29:08 EST


Jeff Garzik wrote:
Divy Le Ray wrote:
From: Divy Le Ray <divy@xxxxxxxxxxx>

Let the RDMA driver get HW page info to work around HW issues.
Assign explicit enum values.

Signed-off-by: Divy Le Ray <divy@xxxxxxxxxxx>

"HW issues" -- you need to go into far more detail, when adding a new interface. what hw issues? why was this the best/only solution?



A HW issue requires limiting the receive window size to 23 pages of internal memory.
These pages can be configured to different sizes, thus the RDMA driver needs to know the
page size to enforce the upper limit.

Divy
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