[PATCH net-next 04/11] net: dsa: debugfs: add tag_protocol
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STALE3347d
SUPERSEDED
From: Vivien Didelot <hidden>
Date: 2017-08-14 22:27:17
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 v1 of 2 in this series.
Revisions (2)
- v1 current
- v2 [diff vs current]
Add a debug filesystem "tag_protocol" entry to query the switch tagging
protocol through the .get_tag_protocol operation.
# cat switch1/tag_protocol
EDSA
Signed-off-by: Vivien Didelot <redacted>
---
net/dsa/debugfs.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/net/dsa/debugfs.c b/net/dsa/debugfs.c
index 5607efdb924d..30a732e86161 100644
--- a/net/dsa/debugfs.c
+++ b/net/dsa/debugfs.c@@ -109,6 +109,55 @@ static int dsa_debugfs_create_file(struct dsa_switch *ds, struct dentry *dir, return 0; } +static int dsa_debugfs_tag_protocol_read(struct dsa_switch *ds, int id, + struct seq_file *seq) +{ + enum dsa_tag_protocol proto; + + if (!ds->ops->get_tag_protocol) + return -EOPNOTSUPP; + + proto = ds->ops->get_tag_protocol(ds); + + switch (proto) { + case DSA_TAG_PROTO_NONE: + seq_puts(seq, "NONE\n"); + break; + case DSA_TAG_PROTO_BRCM: + seq_puts(seq, "BRCM\n"); + break; + case DSA_TAG_PROTO_DSA: + seq_puts(seq, "DSA\n"); + break; + case DSA_TAG_PROTO_EDSA: + seq_puts(seq, "EDSA\n"); + break; + case DSA_TAG_PROTO_KSZ: + seq_puts(seq, "KSZ\n"); + break; + case DSA_TAG_PROTO_LAN9303: + seq_puts(seq, "LAN9303\n"); + break; + case DSA_TAG_PROTO_MTK: + seq_puts(seq, "MTK\n"); + break; + case DSA_TAG_PROTO_QCA: + seq_puts(seq, "QCA\n"); + break; + case DSA_TAG_PROTO_TRAILER: + seq_puts(seq, "TRAILER\n"); + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct dsa_debugfs_ops dsa_debugfs_tag_protocol_ops = { + .read = dsa_debugfs_tag_protocol_read, +}; + static int dsa_debugfs_tree_read(struct dsa_switch *ds, int id, struct seq_file *seq) {
@@ -151,6 +200,11 @@ static int dsa_debugfs_create_switch(struct dsa_switch *ds) if (IS_ERR_OR_NULL(ds->debugfs_dir)) return -EFAULT; + err = dsa_debugfs_create_file(ds, ds->debugfs_dir, "tag_protocol", -1, + &dsa_debugfs_tag_protocol_ops); + if (err) + return err; + err = dsa_debugfs_create_file(ds, ds->debugfs_dir, "tree", -1, &dsa_debugfs_tree_ops); if (err)
--
2.14.0