[net-next,18/18] net: ieee802154: Trace the registration of new PANs

Commit Message

Miquel Raynal Dec. 22, 2021, 3:57 p.m. UTC

From: David Girault <[e-mail]>

Add an internal trace when new PANs get discovered.

Signed-off-by: David Girault <[e-mail]>
Signed-off-by: Miquel Raynal <[e-mail]>
---
 net/ieee802154/pan.c   |  3 +++
 net/ieee802154/trace.h | 25 +++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

Patch

diff --git a/net/ieee802154/pan.c b/net/ieee802154/pan.c
index c71a3664d5c3..451576d9ab41 100644
--- a/net/ieee802154/pan.c
+++ b/net/ieee802154/pan.c
@@ -18,6 +18,7 @@ 
 
 #include "ieee802154.h"
 #include "core.h"
+#include "trace.h"
 
 /* Maximum number of PAN entries to store */
 static int max_pan_entries = 100;
@@ -182,6 +183,8 @@  static void cfg802154_pan_update(struct cfg802154_registered_device *rdev,
 	found = cfg802154_find_matching_pan(rdev, new);
 	if (found)
 		cfg802154_unlink_pan(rdev, found);
+	else
+		trace_802154_new_pan(&new->desc);
 
 	if (unlikely(rdev->pan_entries >= max_pan_entries))
 		cfg802154_expire_oldest_pan(rdev);
diff --git a/net/ieee802154/trace.h b/net/ieee802154/trace.h
index 353ba799244f..506fe4930440 100644
--- a/net/ieee802154/trace.h
+++ b/net/ieee802154/trace.h
@@ -356,6 +356,31 @@  DEFINE_EVENT(802154_wdev_template, 802154_rdev_stop_beacons,
 	TP_ARGS(wpan_phy, wpan_dev)
 );
 
+DECLARE_EVENT_CLASS(802154_pan_evt,
+	TP_PROTO(struct ieee802154_pan_desc *desc),
+	TP_ARGS(desc),
+	TP_STRUCT__entry(
+		__field(u16, pan_id)
+		__field(__le64, coord_addr)
+		__field(u8, channel)
+		__field(u8, page)
+	),
+	TP_fast_assign(
+		__entry->page = desc->page;
+		__entry->channel = desc->channel;
+		memcpy(&__entry->pan_id, &desc->coord->pan_id, 2);
+		memcpy(&__entry->coord_addr, &desc->coord->extended_addr, 8);
+	),
+	TP_printk("panid: %u, coord_addr: 0x%llx, page: %u, channel: %u",
+		  __entry->pan_id, __le64_to_cpu(__entry->coord_addr),
+		  __entry->page, __entry->channel)
+);
+
+DEFINE_EVENT(802154_pan_evt, 802154_new_pan,
+	TP_PROTO(struct ieee802154_pan_desc *desc),
+	TP_ARGS(desc)
+);
+
 TRACE_EVENT(802154_rdev_return_int,
 	TP_PROTO(struct wpan_phy *wpan_phy, int ret),
 	TP_ARGS(wpan_phy, ret),