Re: [PATCH V5 0/5] iSER support for iWARP

Nicholas A. Bellinger
2015-07-07T00:38:53Z

Hi Steve & Co,

On Sun, 2015-07-05 at 12:44 -0500, Steve Wise wrote:
> The following series implements support for iWARP transports in the iSER
> initiator and target. This is based on Doug's k.o/for-4.2 branch.
>
> I've tested this on cxgb4 and mlx4 hardware.
>
> Changes since V4:
>
> iser: fixedcompiler warning
>
> isert: back to setting REMOTE_WRITE only for iWARP devices
>
> Changes since V3:
>
> Fixed commit messages based on feedback.
>
> iser: adjust max_sectors
>
> isert: split into 2 patches
>
> isert: always set REMOTE_WRITE for dma mrs
>
> Changes since V2:
>
> The transport independent work is removed from this series and will
> be submitted in a subsequent series. This V3 series now enables iWARP
> using existing core services.
>
> Changes since V1:
>
> Introduce and use transport-independent RDMA core services for allocating
> DMA MRs and computing fast register access flags.
>
> Correctly set the device max_sge_rd capability in several rdma device
> drivers.
>
> isert: use device capability max_sge_rd for the read sge depth.
>
> isert: change max_sge to max_write_sge in struct isert_conn.
>
> ---
>
> Sagi Grimberg (1):
> mlx4, mlx5, mthca: Expose max_sge_rd correctly
>
> Steve Wise (4):
> RDMA/isert: Limit read depth based on the device max_sge_rd capability
> RDMA/isert: Set REMOTE_WRITE on DMA MRs to support iWARP devices
> RDMA/iser: Limit sg tablesize and max_sectors to device fastreg max depth
> ipath,qib: Expose max_sge_rd correctly
>
>
> drivers/infiniband/hw/ipath/ipath_verbs.c | 1
> drivers/infiniband/hw/mlx4/main.c | 1
> drivers/infiniband/hw/mlx5/main.c | 1
> drivers/infiniband/hw/mthca/mthca_provider.c | 1
> drivers/infiniband/hw/qib/qib_verbs.c | 1
> drivers/infiniband/ulp/iser/iscsi_iser.c | 9 ++++
> drivers/infiniband/ulp/isert/ib_isert.c | 53 ++++++++++++++++++++++----
> drivers/infiniband/ulp/isert/ib_isert.h | 3 +
> 8 files changed, 60 insertions(+), 10 deletions(-)
>

Very excited to see iWARP support for iser-initiator + iser-target. ;)

No objections to taking the iser-target changes through Doug's
infiniband.git. For the target pieces:

Acked-by: Nicholas Bellinger <nab-IzHhD5pYlfBP7FQvKIMDCQ@public.gmane.org>

Also Doug, since this series is sufficiently small enough, and allows a class
of hardware that people are expecting to function with iser to 'just work', I'd
recommend to go ahead and push this series for v4.2-rc code.

Thank you,

--nab

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