Re: [PATCH V6 6/9] isert: Rename IO functions to more descriptive names

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 7/26/2015 12:40 PM, Sagi Grimberg wrote:

Ideally, the post contains a chain of all 4 registrations and the
rdma_read (and an opportunistic good scsi response).

Just to be clear: This example is for IB only, correct?  IW would
require rkeys with REMOTE_WRITE and 4 read wrs.

My assumption is that it would depend on max_sge_rd.


yea.

IB only? iWARP by definition isn't capable of doing rdma_read to
more than one scatter? Anyway, we'll need to calculate the number
of RDMA_READs.


The wire protocol limits the destination to a single stg/to/len (aka rkey/addr/len). Devices/fw/sw could implement some magic to support a single stg/to/len that maps to a scatter gather list of stags/tos/lens.

And you're ignoring invalidation wrs (or read-with-inv) in the example...

Yes, didn't want to inflate the example too much...

--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Filesystem Development]     [Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Yosemite Info]     [Linux SCSI]

  Powered by Linux