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netdevsim: change debugfs tree topology

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With the model where dev is represented by devlink and ports are
represented by devlink ports, make debugfs file names independent
on netdev names. Change the topology to the one illustrated
by the following example:

$ ls /sys/kernel/debug/netdevsim/
netdevsim1
$ ls /sys/kernel/debug/netdevsim/netdevsim1/
bpf_bind_accept  bpf_bind_verifier_delay  bpf_bound_progs  ports
$ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/
0  1
$ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/0/
bpf_map_accept  bpf_offloaded_id  bpf_tc_accept  bpf_tc_non_bound_accept  bpf_xdpdrv_accept  bpf_xdpoffload_accept  dev  ipsec
$ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/0/dev -l
lrwxrwxrwx 1 root root 0 Apr 13 15:58 /sys/kernel/debug/netdevsim/netdevsim1/ports/0/dev -> ../../../netdevsim1

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2019-04-25 15:59:52 +02:00 • committed by David S. Miller
parent 514cf64cc5
commit ab1d0cc004
5 changed files with 15 additions and 17 deletions
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10
drivers/net/netdevsim/dev.c
View file

@ -27,17 +27,21 @@ static struct dentry *nsim_dev_ddir;
static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev)
{
char dev_ddir_name[10];
char dev_ddir_name[16];
sprintf(dev_ddir_name, "%u", nsim_dev->nsim_bus_dev->dev.id);
sprintf(dev_ddir_name, DRV_NAME "%u", nsim_dev->nsim_bus_dev->dev.id);
nsim_dev->ddir = debugfs_create_dir(dev_ddir_name, nsim_dev_ddir);
if (IS_ERR_OR_NULL(nsim_dev->ddir))
return PTR_ERR_OR_ZERO(nsim_dev->ddir) ?: -EINVAL;
nsim_dev->ports_ddir = debugfs_create_dir("ports", nsim_dev->ddir);
if (IS_ERR_OR_NULL(nsim_dev->ports_ddir))
return PTR_ERR_OR_ZERO(nsim_dev->ports_ddir) ?: -EINVAL;
return 0;
}
static void nsim_dev_debugfs_exit(struct nsim_dev *nsim_dev)
{
debugfs_remove_recursive(nsim_dev->ports_ddir);
debugfs_remove_recursive(nsim_dev->ddir);
}
@ -273,7 +277,7 @@ void nsim_dev_destroy(struct nsim_dev *nsim_dev)
int nsim_dev_init(void)
{
nsim_dev_ddir = debugfs_create_dir(DRV_NAME "_dev", NULL);
nsim_dev_ddir = debugfs_create_dir(DRV_NAME, NULL);
if (IS_ERR_OR_NULL(nsim_dev_ddir))
return -ENOMEM;
return 0;