diff options
| author | Yishai Hadas <yishaih@mellanox.com> | 2015-03-03 18:28:49 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-04-15 22:51:50 +0300 |
| commit | ee59fa0d7e9af130bfc1b75524e04c101670bd5e (patch) | |
| tree | f5686baddd5dc88e658064aa40205d650c3af7f0 /drivers/infiniband/hw/mlx4/alias_GUID.c | |
| parent | f54796012837687532d0a87a0504de22da7c2503 (diff) | |
| download | linux-ee59fa0d7e9af130bfc1b75524e04c101670bd5e.tar.xz | |
IB/mlx4: Request alias GUID on demand
Request GIDs from the SM on demand, i.e., when a VF actually needs them,
and release them when the GIDs are no longer in use.
In cloud environments, this is useful for GID migrations, in which a
GID is assigned to a VF on the destination HCA, while the VF on the
source HCA is shutdown (but the GID was not administratively released).
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/alias_GUID.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/alias_GUID.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c index 5b4080740321..0f00204d2ece 100644 --- a/drivers/infiniband/hw/mlx4/alias_GUID.c +++ b/drivers/infiniband/hw/mlx4/alias_GUID.c @@ -123,6 +123,57 @@ ib_sa_comp_mask mlx4_ib_get_aguid_comp_mask_from_ix(int index) return IB_SA_COMP_MASK(4 + index); } +void mlx4_ib_slave_alias_guid_event(struct mlx4_ib_dev *dev, int slave, + int port, int slave_init) +{ + __be64 curr_guid, required_guid; + int record_num = slave / 8; + int index = slave % 8; + int port_index = port - 1; + unsigned long flags; + int do_work = 0; + + spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags); + if (dev->sriov.alias_guid.ports_guid[port_index].state_flags & + GUID_STATE_NEED_PORT_INIT) + goto unlock; + if (!slave_init) { + curr_guid = *(__be64 *)&dev->sriov. + alias_guid.ports_guid[port_index]. + all_rec_per_port[record_num]. + all_recs[GUID_REC_SIZE * index]; + if (curr_guid == cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL) || + !curr_guid) + goto unlock; + required_guid = cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL); + } else { + required_guid = mlx4_get_admin_guid(dev->dev, slave, port); + if (required_guid == cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL)) + goto unlock; + } + *(__be64 *)&dev->sriov.alias_guid.ports_guid[port_index]. + all_rec_per_port[record_num]. + all_recs[GUID_REC_SIZE * index] = required_guid; + dev->sriov.alias_guid.ports_guid[port_index]. + all_rec_per_port[record_num].guid_indexes + |= mlx4_ib_get_aguid_comp_mask_from_ix(index); + dev->sriov.alias_guid.ports_guid[port_index]. + all_rec_per_port[record_num].status + = MLX4_GUID_INFO_STATUS_IDLE; + /* set to run immediately */ + dev->sriov.alias_guid.ports_guid[port_index]. + all_rec_per_port[record_num].time_to_run = 0; + dev->sriov.alias_guid.ports_guid[port_index]. + all_rec_per_port[record_num]. + guids_retry_schedule[index] = 0; + do_work = 1; +unlock: + spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags); + + if (do_work) + mlx4_ib_init_alias_guid_work(dev, port_index); +} + /* * Whenever new GUID is set/unset (guid table change) create event and * notify the relevant slave (master also should be notified). |