linux-stable.git/include/rdma/ib_addr.h, branch linux-4.5.y

IB/core: Use hop-limit from IP stack for RoCE

2016-01-19T20:26:56+00:00

Previously, IPV6_DEFAULT_HOPLIMIT was used as the hop limit value for
RoCE. Fixing that by taking ip4_dst_hoplimit and ip6_dst_hoplimit as
hop limit values.

Signed-off-by: Matan Barak 
Signed-off-by: Doug Ledford

IB/core: Rename rdma_addr_find_dmac_by_grh

2016-01-19T20:26:55+00:00

rdma_addr_find_dmac_by_grh resolves dmac, vlan_id and if_index and
downsteram patch will also add hop_limit as an output parameter,
thus we rename it to rdma_addr_find_l2_eth_by_grh.

Signed-off-by: Matan Barak 
Signed-off-by: Doug Ledford

IB/core: Validate route when we init ah

2015-12-23T15:35:12+00:00

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: Matan Barak 
Signed-off-by: Doug Ledford

IB/core: Add rdma_network_type to wc

2015-12-23T15:35:11+00:00

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: Matan Barak 
Signed-off-by: Somnath Kotur 
Signed-off-by: Doug Ledford

IB/addr: Pass network namespace as a parameter

2015-10-28T16:32:47+00:00

Add network namespace support to the ib_addr module. For that, all the
address resolution and matching should be done using the appropriate
namespace instead of init_net.

This is achieved by:

1. Adding an explicit network namespace argument to exported function that
   require a namespace.
2. Saving the namespace in the rdma_addr_client structure.
3. Using it when calling networking functions.

In order to preserve the behavior of calling modules, &init_net is
passed as the parameter in calls from other modules. This is modified as
namespace support is added on more levels.

Signed-off-by: Haggai Eran 
Signed-off-by: Yotam Kenneth 
Signed-off-by: Shachar Raindel 
Signed-off-by: Guy Shapiro 
Signed-off-by: Doug Ledford

IB/core: Use GID table in AH creation and dmac resolution

2015-10-22T03:48:17+00:00

Previously, vlan id and source MAC were used from QP attributes. Since
the net device is now stored in the GID attributes, they could be used
instead of getting this information from the QP attributes.

IB_QP_SMAC, IB_QP_ALT_SMAC, IB_QP_VID and IB_QP_ALT_VID were removed
because there is no known libibverbs that uses them.

This commit also modifies the vendors (mlx4, ocrdma) drivers in order
to use the new approach.

ocrdma driver changes were done by Somnath Kotur 

Signed-off-by: Matan Barak 
Signed-off-by: Doug Ledford

IB/core cleanup: Add const to args - agent_send_response

2015-06-02T13:33:13+00:00

In order to support constant callers of agent_send_response we add const
specifiers to the its pointer arguments.

Adjust the call tree accordingly.

Signed-off-by: Ira Weiny 
Reviewed-by: Hal Rosenstock 
Reviewed-by: Jason Gunthorpe 
Signed-off-by: Doug Ledford

IB/core: change rdma_gid2ip into void function as it always return zero

2015-05-05T17:21:27+00:00

Signed-off-by: Honggang Li 
Acked-by: Sean Hefty 
Signed-off-by: Doug Ledford

IB/cma: IBoE (RoCE) IP-based GID addressing

2014-01-18T22:12:35+00:00

Currently, the IB core and specifically the RDMA-CM assumes that IBoE
(RoCE) gids encode related Ethernet netdevice interface MAC address
and possibly VLAN id.

Change GIDs to be treated as they encode interface IP address.

Since Ethernet layer 2 address parameters are not longer encoded
within gids, we have to extend the Infiniband address structures (e.g.
ib_ah_attr) with layer 2 address parameters, namely mac and vlan.

Signed-off-by: Moni Shoua 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/core: Ethernet L2 attributes in verbs/cm structures

2014-01-14T22:20:54+00:00

This patch add the support for Ethernet L2 attributes in the
verbs/cm/cma structures.

When dealing with L2 Ethernet, we should use smac, dmac, vlan ID and priority
in a similar manner that the IB L2 (and the L4 PKEY) attributes are used.

Thus, those attributes were added to the following structures:

* ib_ah_attr - added dmac
* ib_qp_attr - added smac and vlan_id, (sl remains vlan priority)
* ib_wc - added smac, vlan_id
* ib_sa_path_rec - added smac, dmac, vlan_id
* cm_av - added smac and vlan_id

For the path record structure, extra care was taken to avoid the new
fields when packing it into wire format, so we don't break the IB CM
and SA wire protocol.

On the active side, the CM fills. its internal structures from the
path provided by the ULP.  We add there taking the ETH L2 attributes
and placing them into the CM Address Handle (struct cm_av).

On the passive side, the CM fills its internal structures from the WC
associated with the REQ message.  We add there taking the ETH L2
attributes from the WC.

When the HW driver provides the required ETH L2 attributes in the WC,
they set the IB_WC_WITH_SMAC and IB_WC_WITH_VLAN flags. The IB core
code checks for the presence of these flags, and in their absence does
address resolution from the ib_init_ah_from_wc() helper function.

ib_modify_qp_is_ok is also updated to consider the link layer. Some
parameters are mandatory for Ethernet link layer, while they are
irrelevant for IB.  Vendor drivers are modified to support the new
function signature.

Signed-off-by: Matan Barak 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier