[PATCH 0/8] RDMA/siw: [re-]introduce module parameters and add MPA V1

[Stefan Metzmacher <metze@samba.org>]

While working on smbdirect cleanup I'm using siw.ko for
testing against Windows using Chelsio T404-BT (only supporting MPA V1)
and T520-BT (supporting MPA V2) cards.

Up to now I used old patches to add MPA V1 support
to siw.ko and compiled against the running kernel
each time. I don't want to do that forever, so
I re-introduced module parameters in order to
avoid patching and compiling.

For my testing I'm using something like this:

  echo 1 > /sys/module/siw/parameters/mpa_crc_required
  echo 1 > /sys/module/siw/parameters/mpa_crc_strict
  echo 0 > /sys/module/siw/parameters/mpa_rdma_write_rtr
  echo 1 > /sys/module/siw/parameters/mpa_peer_to_peer

  echo 1 > /sys/module/siw/parameters/mpa_version
  rdma link add siw_v1_eth0 type siw netdev eth0

  echo 2 > /sys/module/siw/parameters/mpa_version
  rdma link add siw_v2_eth1 type siw netdev eth1

The global parameters are copied at 'rdma link add' time
and will stay as is for the lifetime of the specific device.

So I can testing against the T520-BT card using siw_v2_eth1
and against the T404-BT card using siw_v1_eth0.

It would be great if this can go upstream.

Stefan Metzmacher (8):
  RDMA/siw: make mpa_version = MPA_REVISION_2 const
  RDMA/siw: remove unused loopback_enabled = true
  RDMA/siw: add and remember siw_device_options per device.
  RDMA/siw: make use of sdev->options.* and avoid globals
  RDMA/siw: combine global options into siw_default_options
  RDMA/siw: move rtr_type to siw_device_options
  RDMA/siw: [re-]introduce module parameters to alter the behavior at
    runtime
  RDMA/siw: add support for MPA V1 and IRD/ORD negotiation based on
    [MS-SMBD]

 drivers/infiniband/sw/siw/iwarp.h     |   8 +
 drivers/infiniband/sw/siw/siw.h       |  21 +-
 drivers/infiniband/sw/siw/siw_cm.c    | 268 +++++++++++++++++++++-----
 drivers/infiniband/sw/siw/siw_cm.h    |   2 +
 drivers/infiniband/sw/siw/siw_main.c  | 173 ++++++++++++++---
 drivers/infiniband/sw/siw/siw_qp_tx.c |   3 +-
 drivers/infiniband/sw/siw/siw_verbs.c |   2 +-
 7 files changed, 395 insertions(+), 82 deletions(-)

-- 
2.34.1