From: Jiri Pirko Date: Thu, 25 Apr 2019 13:59:52 +0000 (+0200) Subject: netdevsim: change debugfs tree topology X-Git-Tag: v5.4-rc1~1056^2~104^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ab1d0cc004d706523dcad7cdad97a2b94eecf169;p=platform%2Fkernel%2Flinux-rpi.git netdevsim: change debugfs tree topology 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 98a56d8..14946d1 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -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; diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c index 9b4310e..eb823bd 100644 --- a/drivers/net/netdevsim/netdev.c +++ b/drivers/net/netdevsim/netdev.c @@ -25,8 +25,6 @@ #include "netdevsim.h" -static struct dentry *nsim_ddir; - static int nsim_get_port_parent_id(struct net_device *dev, struct netdev_phys_item_id *ppid) { @@ -42,11 +40,11 @@ static int nsim_init(struct net_device *dev) char dev_link_name[32]; int err; - ns->ddir = debugfs_create_dir(netdev_name(dev), nsim_ddir); + ns->ddir = debugfs_create_dir("0", ns->nsim_dev->ports_ddir); if (IS_ERR_OR_NULL(ns->ddir)) return -ENOMEM; - sprintf(dev_link_name, "../../" DRV_NAME "_dev/%u", + sprintf(dev_link_name, "../../../" DRV_NAME "%u", ns->nsim_dev->nsim_bus_dev->dev.id); debugfs_create_symlink("dev", ns->ddir, dev_link_name); @@ -403,13 +401,9 @@ static int __init nsim_module_init(void) { int err; - nsim_ddir = debugfs_create_dir(DRV_NAME, NULL); - if (IS_ERR_OR_NULL(nsim_ddir)) - return -ENOMEM; - err = nsim_dev_init(); if (err) - goto err_debugfs_destroy; + return err; err = nsim_bus_init(); if (err) @@ -425,8 +419,6 @@ err_bus_exit: nsim_bus_exit(); err_dev_exit: nsim_dev_exit(); -err_debugfs_destroy: - debugfs_remove_recursive(nsim_ddir); return err; } @@ -435,7 +427,6 @@ static void __exit nsim_module_exit(void) rtnl_link_unregister(&nsim_link_ops); nsim_bus_exit(); nsim_dev_exit(); - debugfs_remove_recursive(nsim_ddir); } module_init(nsim_module_init); diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h index 17639c7..e951b1c 100644 --- a/drivers/net/netdevsim/netdevsim.h +++ b/drivers/net/netdevsim/netdevsim.h @@ -134,6 +134,7 @@ struct nsim_dev { struct nsim_bus_dev *nsim_bus_dev; struct nsim_fib_data *fib_data; struct dentry *ddir; + struct dentry *ports_ddir; struct bpf_offload_dev *bpf_dev; bool bpf_bind_accept; u32 bpf_bind_verifier_delay; diff --git a/tools/testing/selftests/bpf/test_offload.py b/tools/testing/selftests/bpf/test_offload.py index 91dfe87..5f2e4f9 100755 --- a/tools/testing/selftests/bpf/test_offload.py +++ b/tools/testing/selftests/bpf/test_offload.py @@ -306,6 +306,8 @@ class DebugfsDir: _, out = cmd('ls ' + path) for f in out.split(): + if f == "ports": + continue p = os.path.join(path, f) if os.path.isfile(p): _, out = cmd('cat %s/%s' % (path, f)) @@ -334,7 +336,7 @@ class NetdevSim: self.ns = "" - self.dfs_dir = '/sys/kernel/debug/netdevsim/%s' % (self.dev['ifname']) + self.dfs_dir = '/sys/kernel/debug/netdevsim/netdevsim0/ports/0/' self.dev_dir = self.dfs_dir + '/dev/' self.dfs_refresh() diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index b447803..311f82b 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -697,7 +697,7 @@ kci_test_ipsec_offload() srcip=192.168.123.3 dstip=192.168.123.4 dev=simx1 - sysfsd=/sys/kernel/debug/netdevsim/$dev + sysfsd=/sys/kernel/debug/netdevsim/netdevsim0/ports/0/ sysfsf=$sysfsd/ipsec # setup netdevsim since dummydev doesn't have offload support