Re: [PATCH v1 00/30] IB/Core: Adding support for RoCEV2 Specification

Re: [PATCH v1 00/30] IB/Core: Adding support for RoCEV2 Specification

[Bart Van Assche]

On 02/19/15 23:02, Somnath Kotur wrote:
> This series depends on RoCE LAG series (already accepted in net-next tree)

Hello Somnath,

Can you make a git tree available with these patches ? These patches do
not apply cleanly on Dave Miller's latest net-next branch (git commit ID
fece13ca005a5f559147e9424321f4b5e01272b4; Feb 17, 2015).

Thanks,

Bart.

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RE: [PATCH v1 00/30] IB/Core: Adding support for RoCEV2 Specification

[Somnath Kotur]

Hi Bart,
	Here's the link to the git tree with the patches

https://github.com/matanb10/linux.git 
branch name: rocev2_rc4

Thanks
Som

> -----Original Message-----
> From: Bart Van Assche [mailto:bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org]
> Sent: Thursday, February 19, 2015 1:47 PM
> To: Somnath Kotur; roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
> Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Subject: Re: [PATCH v1 00/30] IB/Core: Adding support for RoCEV2
> Specification
> 
> On 02/19/15 23:02, Somnath Kotur wrote:
> > This series depends on RoCE LAG series (already accepted in net-next
> > tree)
> 
> Hello Somnath,
> 
> Can you make a git tree available with these patches ? These patches do not
> apply cleanly on Dave Miller's latest net-next branch (git commit ID
> fece13ca005a5f559147e9424321f4b5e01272b4; Feb 17, 2015).
> 
> Thanks,
> 
> Bart.

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[PATCH v1 00/30] IB/Core: Adding support for RoCEV2 Specification

[Somnath Kotur]

Hi Roland,

This patch series was created out of collaboration between Emulex and Mellanox.
While Emulex sent out the RoCEV2 patch first to the community, Mellanox which
was also working on some core infrastructure changes from the ground-up towards
RoCEV2 felt that the RoCEV2 patch would be better served if done on top of
their basic infrastructure changes to associate entities like MAC, VLAN,
IP Address with GIDs and thereby move GID Table Management from HW Vendor
drivers to IB/Core.
This patchset is the result of joint development effort between the two teams.

Patch 0001 creates a new infrastructure for storing GIDs and their attributes in
IB/core. This infrastructure support lock-less read of GIDs using a sequence
number.  The data structure is initialized only for RoCE ports.
Every gid has meta information describes its related net device and its type.

Patches 0002, 0004 and 0005 add population of this table for various cases
based on net device events. We always enable default gids for an active device
(an active device is defined here as a device that doesn't have a bonding master
or is the current active slave). This is done in order to allow loopback traffic

Patch 0005 adds proper bonding support - only the active slaves retain their
master's IP based gids and default gids.

This whole concept needs to fit the existing sysfs model, thus patch 0006 adds
sysfs entries that represent the net device and gid type related to each gid.

Patches 0002, 0007, 0008 and 0009 changes the rest of IB/core to fit the new model.
Instead of storing smac and vlan, we store either if_index, gid and gid_type 
or sgid_index. Either set suffices in order to resolve all the required
Ethernet parameters. ib_init_ah_from_wc was changed, such as that when a wc is
arrived, we query all the net devices in all namespaces trying to find a match.
This match is later used to find an appropriate sgid_index.

Patch 0010 is used in order to configure the default mode of the cma.
In order to avoid changing existing rdma-cm applications, we adds a configfs 
that states for each ib device what's the default RoCE mode.

Patch 0011 mainly corrects the hop limit value and adds a hint about RoCE type
according to whether we have a gateway. This is the patch that makes it possible
for applications to seamlessly interop between RoCE V1 and V2 without undergoing
any changes themselves.

The rest of the patches add support for ocrdma and mlx4 devices.

This series depends on RoCE LAG series (already accepted in net-next tree)

Thanks,
Somnath, Devesh, Moni and Matan

v0->v1: Minor bug fix that was missed in patch 14/30 in the first cut

Devesh Sharma (3):
  RDMA/ocrdma: changes to support RoCE-v2 in UD path
  RDMA/ocrdma: changes to support RoCE-v2 in RC path
  RDMA/ocrdma: changes to support user AH creation

Matan Barak (12):
  IB/core: Add RoCE GID cache
  IB/core: Add kref to IB devices
  IB/core: Add RoCE GID population
  IB/core: Add default GID for RoCE GID Cache
  IB/core: Add RoCE cache bonding support
  IB/core: GID attribute should be returned from verbs API and cache
    API
  IB/core: Report gid_type and gid_ndev through sysfs
  IB/core: Support find sgid index using a filter function
  IB/core: Modify ib_verbs and cma in order to use roce_gid_cache
  IB/core: Add gid_type to path and rdma_id_private
  IB/core: Add rdma_network_type to wc
  IB/cma: Add configfs for rdma_cm

Moni Shoua (13):
  IB/mlx4: Remove gid table management for RoCE
  IB/mlx4: Replace spin_lock with rw_semaphore
  IB/mlx4: Lock with RCU instead of RTNL
  net/mlx4: Postpone the registration of net_device
  IB/mlx4: Advertise RoCE support in port capabilities
  IB/mlx4: Implement ib_device callback - get_netdev
  IB/mlx4: Implement ib_device callback - modify_gid
  IB/mlx4: Configure device to work in RoCEv2
  IB/mlx4: Translate cache gid index to real index
  IB/core: Initialize UD header structure with IP and UDP headers
  IB/mlx4: Enable send of RoCE QP1 packets with IP/UDP headers
  IB/mlx4: Create and use another QP1 for RoCEv2
  IB/cma: Join and leave multicast groups with IGMP

Somnath Kotur (2):
  IB/Core: Changes to the IB Core infrastructure for RoCEv2 support
  RDMA/ocrdma: Changes in driver to incorporate the moving of GID Table
    mgmt to IB/Core.

 drivers/infiniband/core/Makefile               |    5 +-
 drivers/infiniband/core/addr.c                 |   11 +-
 drivers/infiniband/core/cache.c                |  249 +++++++--
 drivers/infiniband/core/cm.c                   |   49 +--
 drivers/infiniband/core/cma.c                  |  229 ++++++--
 drivers/infiniband/core/cma_configfs.c         |  222 +++++++
 drivers/infiniband/core/core_priv.h            |   88 +++-
 drivers/infiniband/core/device.c               |  150 +++++-
 drivers/infiniband/core/mad.c                  |    2 +-
 drivers/infiniband/core/multicast.c            |    3 +-
 drivers/infiniband/core/roce_gid_cache.c       |  755 ++++++++++++++++++++++++
 drivers/infiniband/core/roce_gid_mgmt.c        |  703 ++++++++++++++++++++++
 drivers/infiniband/core/sa_query.c             |   12 +-
 drivers/infiniband/core/sysfs.c                |  187 ++++++-
 drivers/infiniband/core/ucma.c                 |    1 -
 drivers/infiniband/core/ud_header.c            |  153 +++++-
 drivers/infiniband/core/uverbs_cmd.c           |    6 +-
 drivers/infiniband/core/uverbs_marshall.c      |    5 +-
 drivers/infiniband/core/verbs.c                |  264 ++++++---
 drivers/infiniband/hw/mlx4/ah.c                |   15 +-
 drivers/infiniband/hw/mlx4/mad.c               |   12 +-
 drivers/infiniband/hw/mlx4/main.c              |  744 ++++++++---------------
 drivers/infiniband/hw/mlx4/mcg.c               |    2 +-
 drivers/infiniband/hw/mlx4/mlx4_ib.h           |   33 +-
 drivers/infiniband/hw/mlx4/qp.c                |  331 +++++++++--
 drivers/infiniband/hw/mthca/mthca_av.c         |    2 +-
 drivers/infiniband/hw/mthca/mthca_qp.c         |    2 +-
 drivers/infiniband/hw/ocrdma/ocrdma.h          |   12 +
 drivers/infiniband/hw/ocrdma/ocrdma_ah.c       |   93 +++-
 drivers/infiniband/hw/ocrdma/ocrdma_ah.h       |    5 +-
 drivers/infiniband/hw/ocrdma/ocrdma_hw.c       |   48 ++-
 drivers/infiniband/hw/ocrdma/ocrdma_main.c     |  233 +-------
 drivers/infiniband/hw/ocrdma/ocrdma_sli.h      |   18 +-
 drivers/infiniband/hw/ocrdma/ocrdma_verbs.c    |   52 ++-
 drivers/infiniband/hw/ocrdma/ocrdma_verbs.h    |    4 +
 drivers/infiniband/ulp/ipoib/ipoib_main.c      |    2 +-
 drivers/infiniband/ulp/ipoib/ipoib_multicast.c |    2 +-
 drivers/infiniband/ulp/srp/ib_srp.c            |    2 +-
 drivers/infiniband/ulp/srpt/ib_srpt.c          |    3 +-
 drivers/net/bonding/bond_options.c             |   13 -
 drivers/net/ethernet/mellanox/mlx4/en_main.c   |   36 +-
 drivers/net/ethernet/mellanox/mlx4/fw.c        |   21 +-
 drivers/net/ethernet/mellanox/mlx4/intf.c      |    3 +
 drivers/net/ethernet/mellanox/mlx4/main.c      |   18 +
 drivers/net/ethernet/mellanox/mlx4/mlx4.h      |    3 +-
 drivers/net/ethernet/mellanox/mlx4/port.c      |    9 +-
 drivers/net/ethernet/mellanox/mlx4/qp.c        |   27 +
 include/linux/mlx4/cmd.h                       |    3 +-
 include/linux/mlx4/device.h                    |   17 +-
 include/linux/mlx4/driver.h                    |    2 +
 include/linux/mlx4/qp.h                        |   15 +-
 include/net/addrconf.h                         |   31 +
 include/net/bonding.h                          |    7 +
 include/rdma/ib_addr.h                         |    5 +-
 include/rdma/ib_cache.h                        |   71 +++-
 include/rdma/ib_pack.h                         |   44 ++-
 include/rdma/ib_sa.h                           |    5 +-
 include/rdma/ib_verbs.h                        |  120 ++++-
 net/ipv6/addrconf.c                            |   31 -
 59 files changed, 4056 insertions(+), 1134 deletions(-)
 create mode 100644 drivers/infiniband/core/cma_configfs.c
 create mode 100644 drivers/infiniband/core/roce_gid_cache.c
 create mode 100644 drivers/infiniband/core/roce_gid_mgmt.c

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