[patch net-next 2/3] netdevsim: create devlink and netdev instances in namespace

[Jiri Pirko]

From: Jiri Pirko <j...@mellanox.com>

When user does create new netdevsim instance using sysfs bus file,
create the devlink instance and related netdev instance in the namespace
of the caller.

Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 drivers/net/netdevsim/bus.c       | 1 +
 drivers/net/netdevsim/dev.c       | 1 +
 drivers/net/netdevsim/netdevsim.h | 3 +++
 3 files changed, 5 insertions(+)

diff --git a/drivers/net/netdevsim/bus.c b/drivers/net/netdevsim/bus.c
index 1a0ff3d7747b..6aeed0c600f8 100644
--- a/drivers/net/netdevsim/bus.c
+++ b/drivers/net/netdevsim/bus.c
@@ -283,6 +283,7 @@ nsim_bus_dev_new(unsigned int id, unsigned int port_count)
        nsim_bus_dev->dev.bus = &nsim_bus;
        nsim_bus_dev->dev.type = &nsim_bus_dev_type;
        nsim_bus_dev->port_count = port_count;
+       nsim_bus_dev->initial_net = current->nsproxy->net_ns;
 
        err = device_register(&nsim_bus_dev->dev);
        if (err)
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 3f3c7cc21077..fbc4cdcfe551 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -726,6 +726,7 @@ static struct nsim_dev *nsim_dev_create(struct nsim_bus_dev 
*nsim_bus_dev)
        devlink = devlink_alloc(&nsim_dev_devlink_ops, sizeof(*nsim_dev));
        if (!devlink)
                return ERR_PTR(-ENOMEM);
+       devlink_net_set(devlink, nsim_bus_dev->initial_net);
        nsim_dev = devlink_priv(devlink);
        nsim_dev->nsim_bus_dev = nsim_bus_dev;
        nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id);
diff --git a/drivers/net/netdevsim/netdevsim.h 
b/drivers/net/netdevsim/netdevsim.h
index 198ca31cec94..8168a5475fe7 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -220,6 +220,9 @@ struct nsim_bus_dev {
        struct device dev;
        struct list_head list;
        unsigned int port_count;
+       struct net *initial_net; /* Purpose of this is to carry net pointer
+                                 * during the probe time only.
+                                 */
        unsigned int num_vfs;
        struct nsim_vf_config *vfconfigs;
 };
-- 
2.21.0