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SubjectRe: [PATCH] mlx4: Use GFP_NOFS calls during the ipoib TX path when creating the QP
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On Wed, Feb 26, 2014 at 12:11 AM, Jiri Kosina <jkosina@suse.cz> wrote:
> On Tue, 25 Feb 2014, Or Gerlitz wrote:

>> And what happens if you use IPoIB datagram mode, is/why the patch is
>> needed there?

> I admittedly am no infiniband expert, but my understanding is that in
> principle Connected/Datagram mode is about MTU and checksum offloading,

yes, the differences between the mode relate to these aspects, however

> but the TX path is the same. Please correct me if I am wrong.

no, note that your patch only touched drivers/infiniband/ulp/ipoib/ipoib_cm.c
which is basically compiled out if you set CONFIG_INFINIBAND_IPOIB_CM,
so surely the TX path for the datagram vs. connected modes are
different.


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