[PATCH net-next v2 08/10] net: dsa: debugfs: add port mdb
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STALE3321d
REVIEWED: 9 (9M)
From: Vivien Didelot <hidden>
Date: 2017-08-28 19:23:17
Also in:
lkml
Subsystem:
networking [dsa], networking [general], the rest · Maintainers:
Andrew Lunn, Vladimir Oltean, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 2 in this series; 2 review trailers (1 from subsystem maintainers).
Revisions (2)
- v1 [diff vs current]
- v2 current
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 <redacted> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> --- net/dsa/debugfs.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/net/dsa/debugfs.c b/net/dsa/debugfs.c
index 59c09a67bc23..bed8e1d5cfe1 100644
--- a/net/dsa/debugfs.c
+++ b/net/dsa/debugfs.c@@ -135,6 +135,20 @@ 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) {
@@ -253,6 +267,11 @@ 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)
--
2.14.1