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authorYishai Hadas <yishaih@mellanox.com>2015-03-03 18:28:49 +0300
committerDoug Ledford <dledford@redhat.com>2015-04-15 22:51:50 +0300
commitee59fa0d7e9af130bfc1b75524e04c101670bd5e (patch)
treef5686baddd5dc88e658064aa40205d650c3af7f0 /drivers/infiniband/hw/mlx4/main.c
parentf54796012837687532d0a87a0504de22da7c2503 (diff)
downloadlinux-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/main.c')
-rw-r--r--drivers/infiniband/hw/mlx4/main.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 976bea794b5f..e92dc9aa075e 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2791,9 +2791,31 @@ static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
case MLX4_DEV_EVENT_SLAVE_INIT:
/* here, p is the slave id */
do_slave_init(ibdev, p, 1);
+ if (mlx4_is_master(dev)) {
+ int i;
+
+ for (i = 1; i <= ibdev->num_ports; i++) {
+ if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
+ == IB_LINK_LAYER_INFINIBAND)
+ mlx4_ib_slave_alias_guid_event(ibdev,
+ p, i,
+ 1);
+ }
+ }
return;
case MLX4_DEV_EVENT_SLAVE_SHUTDOWN:
+ if (mlx4_is_master(dev)) {
+ int i;
+
+ for (i = 1; i <= ibdev->num_ports; i++) {
+ if (rdma_port_get_link_layer(&ibdev->ib_dev, i)
+ == IB_LINK_LAYER_INFINIBAND)
+ mlx4_ib_slave_alias_guid_event(ibdev,
+ p, i,
+ 0);
+ }
+ }
/* here, p is the slave id */
do_slave_init(ibdev, p, 0);
return;