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Commit a56bc45b authored by Parav Pandit's avatar Parav Pandit Committed by Jason Gunthorpe
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RDMA/core: Add module param to disable device sharing among net ns 



Add module parameter to change a sharing mode of ib_core early in the
boot process. This parameter helps to those systems where modern up
to date rdma tool (iproute2) package may not be available during
kernel upgrade cycle.

Signed-off-by: default avatarParav Pandit <parav@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 5417783e

drivers/infiniband/core/device.c

+7 −0
Original line number Diff line number Diff line
@@ -127,6 +127,10 @@ static DEFINE_XARRAY_FLAGS(rdma_nets, XA_FLAGS_ALLOC); 
 */

static DECLARE_RWSEM(rdma_nets_rwsem);



static bool ib_devices_shared_netns = true;

module_param_named(netns_mode, ib_devices_shared_netns, bool, 0444);

MODULE_PARM_DESC(netns_mode,

		 "Share device among net namespaces; default=1 (shared)");

/*

 * xarray has this behavior where it won't iterate over NULL values stored in

 * allocated arrays.  So we need our own iterator to see all values stored in
@@ -736,6 +740,9 @@ static int add_one_compat_dev(struct ib_device *device, 
	struct ib_core_device *cdev;

	int ret;



	if (!ib_devices_shared_netns)

		return 0;



	/*

	 * Create and add compat device in all namespaces other than where it

	 * is currently bound to.