diff options
| author | Eli Cohen <eli@mellanox.com> | 2016-03-11 23:58:37 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-03-21 23:34:06 +0300 |
| commit | a0c1b2a3508714281f604db818fa0cc83c2f9b6a (patch) | |
| tree | 22388370391416e1535a45b1d0fe89205a7ade03 /drivers/infiniband | |
| parent | fad61ad4e755f5dd13c7702a87cd907207392534 (diff) | |
| download | linux-a0c1b2a3508714281f604db818fa0cc83c2f9b6a.tar.xz | |
IB/core: Support accessing SA in virtualized environment
Per the ongoing standardisation process, when virtual HCAs are present
in a network, traffic is routed based on a destination GID. In order to
access the SA we use the well known SA GID.
We also add a GRH required boolean field to the port attributes which is
used to report to the verbs consumer whether this port is connected to a
virtual network. We use this field to realize whether we need to create
an address vector with GRH to access the subnet administrator. We clear
the port attributes struct before calling the hardware driver to make
sure the default remains that GRH is not required.
Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/sa_query.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c index 8e3bf6c8d3c3..d2214a55ac4a 100644 --- a/drivers/infiniband/core/sa_query.c +++ b/drivers/infiniband/core/sa_query.c @@ -885,6 +885,11 @@ static void update_sm_ah(struct work_struct *work) ah_attr.dlid = port_attr.sm_lid; ah_attr.sl = port_attr.sm_sl; ah_attr.port_num = port->port_num; + if (port_attr.grh_required) { + ah_attr.ah_flags = IB_AH_GRH; + ah_attr.grh.dgid.global.subnet_prefix = cpu_to_be64(port_attr.subnet_prefix); + ah_attr.grh.dgid.global.interface_id = cpu_to_be64(IB_SA_WELL_KNOWN_GUID); + } new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); if (IS_ERR(new_ah->ah)) { |