Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NBart Van Assche <bvanassche@sandisk.com>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

And simplify the calling convention for full-memory registrations.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Just pass and address/size pair instead of an ib_phys_buf array.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Fold simplified versions of build_phys_page_list and
iwch_register_phys_mem into iwch_get_dma_wr now that no other callers
are left.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Remove the unused ib_allow_mw and ib_bind_mw functions, remove the
unused IB_WR_BIND_MW and IB_WC_BIND_MW opcodes and move ib_dealloc_mw
into the uverbs module.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

We have stopped using phys MRs in the kernel a while ago, so let's
remove all the cruft used to implement them.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-By: Devesh Sharma<devesh.sharma@avagotech.com> [ocrdma]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This functionality has no users and was only supported by the staged out
EHCA driver.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Just IB_DEVICE_LOCAL_DMA_LKEY and IB_DEVICE_MEM_MGT_EXTENSIONS for now
as I'm most familar with those.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NSagi Grimberg <sagig@mellanox.com>
Reviewed-By: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Code cleanup to move multicast specific code that checks for
a sendonly join to ipoib_multicast.c. This allows the removal
of the export of __ipoib_mcast_find().
Signed-off-by: NChristoph Lameter <cl@linux.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Code cleanup to remove multicast specific code from ipoib_main.c

The removal of a list of multicast groups occurs in three places.
Create a new function ipoib_mcast_remove_list(). Use this new
function in ipoib_main.c too.
That in turn allows the dropping of two functions that were
exported from ipoib_multicast.c for expiration of mc groups.
Reviewed-by: NIra Weiny <ira.weiny@intel.com>
Signed-off-by: NChristoph Lameter <cl@linux.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Advertise RoCE support for IB/core layer and set the hardware to
work in RoCE mode.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Set the address handle and QP address path fields according to the
link layer type (IB/Eth).
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

These callbacks write into the mlx5 RoCE address table.
Upon del_gid we write a zero'd GID.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

When handling a responder completion, if the link layer is Ethernet,
set the work completion network_hdr_type field according to CQE's
info and the IB_WC_WITH_NETWORK_HDR_TYPE flag.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Using the vport access functions to retrieve the Ethernet
specific information and return this information in
ib_query_device and ib_query_port.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Introduce access functions to query NIC vport system_image_guid,
node_guid and qkey_viol_cntr.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

A mlx5 Ethernet port must be explicitly enabled for RoCE.
When RoCE is not enabled on the port, the NIC will refuse to create
QPs attached to it and incoming RoCE packets will be considered by the
NIC as plain Ethernet packets.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Introduce a new function called mlx5_query_nic_vport_context().
This function gets all the NIC vport attributes from the device.

The MAC address is just one of the NIC vport attributes, so
mlx5_query_nic_vport_mac_address() is now just a wrapper function
above mlx5_query_nic_vport_context().

More NIC vport attributes will be used in following commits.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

For Eth ports only:
Maintain a net device pointer in mlx5_ib_device and update it
upon NETDEV_REGISTER and NETDEV_UNREGISTER events if the
net-device and IB device have the same PCI parent device.
Implement the get_netdev callback to return this net device.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Make the existing mlx5_ib_port_link_layer() signature match
the ib device callback signature (add port_num parameter).
Refactor it to use a sub function so that the link layer could
be queried also before the ibdev is created.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

kzalloc doesn't return ERR_PTR, so there is no need to test for it.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,e;
@@

* x = kzalloc(...)
... when != x = e
* IS_ERR_OR_NULL(x)
// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: NDave Goodell <dgoodell@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Signed-off-by: NDave Goodell <dgoodell@cisco.com>
Reviewed-by: NReese Faucette <rfaucett@cisco.com>
Reviewed-by: NXuyang Wang <xuywang@cisco.com>
Signed-off-by: NNelson Escobar <neescoba@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Signed-off-by: NDave Goodell <dgoodell@cisco.com>
Reviewed-by: NReese Faucette <rfaucett@cisco.com>
Reviewed-by: NXuyang Wang <xuywang@cisco.com>
Signed-off-by: NNelson Escobar <neescoba@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

They were already implemented at a lower layer, but the upper level
routine placed arbitrary restrictions on which transitions were
permitted.  Simplify the state machine logic to live wholly in
usnic_ib_qp_grp_modify.
Signed-off-by: NDave Goodell <dgoodell@cisco.com>
Reviewed-by: NReese Faucette <rfaucett@cisco.com>
Reviewed-by: NXuyang Wang <xuywang@cisco.com>
Signed-off-by: NNelson Escobar <neescoba@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Signed-off-by: NDave Goodell <dgoodell@cisco.com>
Reviewed-by: NReese Faucette <rfaucett@cisco.com>
Reviewed-by: NXuyang Wang <xuywang@cisco.com>
Signed-off-by: NNelson Escobar <neescoba@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Signed-off-by: NChristian Benvenuti <benve@cisco.com>
Signed-off-by: NNelson Escobar <neescoba@cisco.com>
Reviewed-by: NDave Goodell <dgoodell@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Signed-off-by: NNelson Escobar <neescoba@cisco.com>
Reviewed-by: NDave Goodell <dgoodell@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

query_protocol() was added in commit 6b90a6d6 ("IB/Verbs:
Implement new callback query_protocol()") and then removed in
commit f9b22e35 ("IB/core: Convert core to use bitfield
for caps").

This left behind an unused prototype.
Signed-off-by: NNelson Escobar <neescoba@cisco.com>
Reviewed-by: NDave Goodell <dgoodell@cisco.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Since RoCEv2 is a protocol over IP header it is required to send IGMP
join and leave requests to the network when joining and leaving
multicast groups.
Signed-off-by: NMoni Shoua <monis@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

ib_ud_header_init() is used to format InfiniBand headers
in a buffer up to (but not with) BTH. For RoCE UDP ENCAP it is
required that this function would be able to build also IP and UDP
headers.
Signed-off-by: NMoni Shoua <monis@mellanox.com>
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Users would like to control the behaviour of rdma_cm.
For example, old applications which don't set the
required RoCE gid type could be executed on RoCE V2
network types. In order to support this configuration,
we implement a configfs for rdma_cm.

In order to use the configfs, one needs to mount it and
mkdir <IB device name> inside rdma_cm directory.

The patch adds support for a single configuration file,
default_roce_mode. The mode can either be "IB/RoCE v1" or
"RoCE v2".
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Currently, cma users can't increase or decrease the cma reference
count. This is necassary when setting cma attributes (like the
default GID type) in order to avoid use-after-free errors.
Adding cma_ref_dev and cma_deref_dev APIs.
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

In order to make sure API users don't try to use SGIDs which don't
conform to the routing table, validate the route before searching
the RoCE GID table.
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

In order to validate the route, we need an easy way to check if a
net-device belongs to our RDMA device. Move this helper function
to a header file in order to make this check easier.
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Reviewed-by: NHaggai Eran <haggaie@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Providers should tell IB core the wc's network type.
This is used in order to search for the proper GID in the
GID table. When using HCAs that can't provide this info,
IB core tries to deep examine the packet and extract
the GID type by itself.

We choose sgid_index and type from all the matching entries in
RDMA-CM based on hint from the IP stack and we set hop_limit for
the IP packet based on above hint from IP stack.
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NSomnath Kotur <Somnath.Kotur@Avagotech.Com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Adding RoCE v2 GID type and port type. Vendors
which support this type will get their GID table
populated with RoCE v2 GIDs automatically.
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This patch set adds attributes of net device and gid type to each GID
in the GID table. Users that use verbs directly need to specify
the GID index. Since the same GID could have different types or
associated net devices, users should have the ability to query the
associated GID attributes. Adding these attributes to sysfs.
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Previosuly, cm and cma modules supported only IB and RoCE v1 GID type.
In order to support multiple GID types, the gid_type is passed to
cm_init_av_by_path and stored in the path record.

The rdma cm client would use a default GID type that will be saved in
rdma_id_private.
Signed-off-by: NMatan Barak <matanb@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>