[PATCH] nl80211: Pass wiphy events to all affected interfaces

[Andrei Otcheretianski]

From: Benjamin Berg <benjamin.berg at intel.com>

Previously, we would only pass the event to the first interface that
matches. However, one wiphy can have multiple interfaces and each one
needs to get the event delivered. Without this, it could e.g. happen
that a radar detection event is forwarded to p2p-dev-wlan0 and not to
the wlan0 interface which actually needs it.

As such, keep iterating if we are processing a wiphy match and send the
event to all affected BSSs.

Signed-off-by: Benjamin Berg <benjamin.berg at intel.com>
---
 src/drivers/driver_nl80211_event.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/drivers/driver_nl80211_event.c b/src/drivers/driver_nl80211_event.c
index a0f32cdca6..7ad167605d 100644
--- a/src/drivers/driver_nl80211_event.c
+++ b/src/drivers/driver_nl80211_event.c
@@ -4109,6 +4109,7 @@ int process_global_event(struct nl_msg *msg, void *arg)
 	u64 wdev_id = 0;
 	int wdev_id_set = 0;
 	int wiphy_idx_set = 0;
+	bool processed = false;
 
 	/* Event marker, all prior events have been processed */
 	if (gnlh->cmd == NL80211_CMD_GET_PROTOCOL_FEATURES) {
@@ -4157,16 +4158,22 @@ int process_global_event(struct nl_msg *msg, void *arg)
 			    (wiphy_idx_set && wiphy_idx == wiphy_idx_rx) ||
 			    (wdev_id_set && bss->wdev_id_set &&
 			     wdev_id == bss->wdev_id)) {
+				processed = true;
 				do_process_drv_event(bss, gnlh->cmd, tb);
-				return NL_SKIP;
+				if (!wiphy_idx_set)
+					return NL_SKIP;
 			}
 		}
-		wpa_printf(MSG_DEBUG,
-			   "nl80211: Ignored event %d (%s) for foreign interface (ifindex %d wdev 0x%llx)",
-			   gnlh->cmd, nl80211_command_to_string(gnlh->cmd),
-			   ifidx, (long long unsigned int) wdev_id);
 	}
 
+	if (processed)
+		return NL_SKIP;
+
+	wpa_printf(MSG_DEBUG,
+		   "nl80211: Ignored event %d (%s) for foreign interface (ifindex %d wdev 0x%llx wiphy 0x%x)",
+		   gnlh->cmd, nl80211_command_to_string(gnlh->cmd),
+		   ifidx, (long long unsigned int) wdev_id, wiphy_idx_rx);
+
 	return NL_SKIP;
 }
 
-- 
2.43.0