Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1711516

[PATCH net-next 09/11] net: dsa: debugfs: add port mdb

Show all headers | View raw

Add a debug filesystem "mdb" entry to query a port's hardware MDB
entries through the .port_mdb_dump switch operation.

This is really convenient to query directly the hardware or inspect DSA
or CPU links, since these ports are not exposed to userspace.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
 net/dsa/debugfs.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/net/dsa/debugfs.c b/net/dsa/debugfs.c
index 8204c62dc9c1..98c5068d20da 100644
--- a/net/dsa/debugfs.c
+++ b/net/dsa/debugfs.c
@@ -140,6 +140,20 @@ static const struct dsa_debugfs_ops dsa_debugfs_fdb_ops = {
 	.read = dsa_debugfs_fdb_read,
 };
 
+static int dsa_debugfs_mdb_read(struct dsa_switch *ds, int id,
+				struct seq_file *seq)
+{
+	if (!ds->ops->port_mdb_dump)
+		return -EOPNOTSUPP;
+
+	/* same callback as for FDB dump */
+	return ds->ops->port_mdb_dump(ds, id, dsa_debugfs_fdb_dump_cb, seq);
+}
+
+static const struct dsa_debugfs_ops dsa_debugfs_mdb_ops = {
+	.read = dsa_debugfs_mdb_read,
+};
+
 static void dsa_debugfs_regs_read_count(struct dsa_switch *ds, int id,
 					struct seq_file *seq, int count)
 {
@@ -289,6 +303,11 @@ static int dsa_debugfs_create_port(struct dsa_switch *ds, int port)
 	if (err)
 		return err;
 
+	err = dsa_debugfs_create_file(ds, dir, "mdb", port,
+				      &dsa_debugfs_mdb_ops);
+	if (err)
+		return err;
+
 	err = dsa_debugfs_create_file(ds, dir, "regs", port,
 				      &dsa_debugfs_regs_ops);
 	if (err)
-- 
2.14.0

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH net-next 00/11] net: dsa: add generic debugfs interface Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
  [PATCH net-next 09/11] net: dsa: debugfs: add port mdb Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
    Re: [PATCH net-next 09/11] net: dsa: debugfs: add port mdb Andrew Lunn <andrew@lunn.ch> - 2017-08-15 01:00 +0200
    Re: [PATCH net-next 09/11] net: dsa: debugfs: add port mdb Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 01/11] net: dsa: legacy: assign dst->applied Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
    Re: [PATCH net-next 01/11] net: dsa: legacy: assign dst->applied Andrew Lunn <andrew@lunn.ch> - 2017-08-15 01:00 +0200
  [PATCH net-next 08/11] net: dsa: restore mdb dump Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:30 +0200
    Re: [PATCH net-next 08/11] net: dsa: restore mdb dump Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    Re: [PATCH net-next 08/11] net: dsa: restore mdb dump Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 07/11] net: dsa: debugfs: add port fdb Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 07/11] net: dsa: debugfs: add port fdb Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    Re: [PATCH net-next 07/11] net: dsa: debugfs: add port fdb Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 06/11] net: dsa: debugfs: add port registers Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 06/11] net: dsa: debugfs: add port registers Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    RE: [PATCH net-next 06/11] net: dsa: debugfs: add port registers <Woojung.Huh@microchip.com> - 2017-08-15 18:30 +0200
    Re: [PATCH net-next 06/11] net: dsa: debugfs: add port registers Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 05/11] net: dsa: debugfs: add port stats Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 05/11] net: dsa: debugfs: add port stats Andrew Lunn <andrew@lunn.ch> - 2017-08-15 00:50 +0200
    Re: [PATCH net-next 05/11] net: dsa: debugfs: add port stats Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:40 +0200
  [PATCH net-next 02/11] net: dsa: add debugfs interface Vivien Didelot <vivien.didelot@savoirfairelinux.com> - 2017-08-15 00:40 +0200
    Re: [PATCH net-next 02/11] net: dsa: add debugfs interface Florian Fainelli <f.fainelli@gmail.com> - 2017-08-15 19:30 +0200
  Re: [PATCH net-next 00/11] net: dsa: add generic debugfs interface Florian Fainelli <f.fainelli@gmail.com> - 2017-08-19 00:00 +0200

csiph-web