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authorDaniel Jurgens <danielj@mellanox.com>2018-01-04 17:25:36 +0200
committerJason Gunthorpe <jgg@mellanox.com>2018-01-08 11:42:22 -0700
commit32f69e4be269739c3850cd20f1a3322e95c1145f (patch)
tree1e138424718ef228f344e008986a0d681cff27e3 /drivers/infiniband/core/roce_gid_mgmt.c
parentIB/mlx5: Make netdev notifications multiport capable (diff)
downloadlinux-dev-32f69e4be269739c3850cd20f1a3322e95c1145f.tar.xz
linux-dev-32f69e4be269739c3850cd20f1a3322e95c1145f.zip
{net, IB}/mlx5: Manage port association for multiport RoCE
When mlx5_ib_add is called determine if the mlx5 core device being added is capable of dual port RoCE operation. If it is, determine whether it is a master device or a slave device using the num_vhca_ports and affiliate_nic_vport_criteria capabilities. If the device is a slave, attempt to find a master device to affiliate it with. Devices that can be affiliated will share a system image guid. If none are found place it on a list of unaffiliated ports. If a master is found bind the port to it by configuring the port affiliation in the NIC vport context. Similarly when mlx5_ib_remove is called determine the port type. If it's a slave port, unaffiliate it from the master device, otherwise just remove it from the unaffiliated port list. The IB device is registered as a multiport device, even if a 2nd port is not available for affiliation. When the 2nd port is affiliated later the GID cache must be refreshed in order to get the default GIDs for the 2nd port in the cache. Export roce_rescan_device to provide a mechanism to refresh the cache after a new port is bound. In a multiport configuration all IB object (QP, MR, PD, etc) related commands should flow through the master mlx5_core_dev, other commands must be sent to the slave port mlx5_core_mdev, an interface is provide to get the correct mdev for non IB object commands. Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/roce_gid_mgmt.c')
-rw-r--r--drivers/infiniband/core/roce_gid_mgmt.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/infiniband/core/roce_gid_mgmt.c b/drivers/infiniband/core/roce_gid_mgmt.c
index ebfe45739ca7..5a52ec77940a 100644
--- a/drivers/infiniband/core/roce_gid_mgmt.c
+++ b/drivers/infiniband/core/roce_gid_mgmt.c
@@ -410,13 +410,18 @@ static void enum_all_gids_of_dev_cb(struct ib_device *ib_dev,
rtnl_unlock();
}
-/* This function will rescan all of the network devices in the system
- * and add their gids, as needed, to the relevant RoCE devices. */
-void roce_rescan_device(struct ib_device *ib_dev)
+/**
+ * rdma_roce_rescan_device - Rescan all of the network devices in the system
+ * and add their gids, as needed, to the relevant RoCE devices.
+ *
+ * @device: the rdma device
+ */
+void rdma_roce_rescan_device(struct ib_device *ib_dev)
{
ib_enum_roce_netdev(ib_dev, pass_all_filter, NULL,
enum_all_gids_of_dev_cb, NULL);
}
+EXPORT_SYMBOL(rdma_roce_rescan_device);
static void callback_for_addr_gid_device_scan(struct ib_device *device,
u8 port,