From: Markus Theil <markus.theil@tu-ilmenau.de>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org,
Markus Theil <markus.theil@tu-ilmenau.de>
Subject: [PATCH] mac80211: mesh: only warn if mesh peering is established
Date: Tue, 3 Dec 2019 19:06:44 +0100 [thread overview]
Message-ID: <20191203180644.70653-1-markus.theil@tu-ilmenau.de> (raw)
The following warning is triggered every time an unestablished mesh peer
gets dumped. This patch checks, if a peer link is established, when dum-
ping the airtime link metric.
[ 9563.022567] WARNING: CPU: 0 PID: 6287 at net/mac80211/mesh_hwmp.c:345
airtime_link_metric_get+0xa2/0xb0 [mac80211]
[ 9563.022697] Hardware name: PC Engines apu2/apu2, BIOS v4.10.0.3
[ 9563.022756] RIP: 0010:airtime_link_metric_get+0xa2/0xb0 [mac80211]
[ 9563.022838] Call Trace:
[ 9563.022897] sta_set_sinfo+0x936/0xa10 [mac80211]
[ 9563.022964] ieee80211_dump_station+0x6d/0x90 [mac80211]
[ 9563.023062] nl80211_dump_station+0x154/0x2a0 [cfg80211]
[ 9563.023120] netlink_dump+0x17b/0x370
[ 9563.023130] netlink_recvmsg+0x2a4/0x480
[ 9563.023140] ____sys_recvmsg+0xa6/0x160
[ 9563.023154] ___sys_recvmsg+0x93/0xe0
[ 9563.023169] __sys_recvmsg+0x7e/0xd0
[ 9563.023210] do_syscall_64+0x4e/0x140
[ 9563.023217] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
---
net/mac80211/mesh_hwmp.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 68af62306385..d69983370381 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -328,6 +328,9 @@ u32 airtime_link_metric_get(struct ieee80211_local *local,
unsigned long fail_avg =
ewma_mesh_fail_avg_read(&sta->mesh->fail_avg);
+ if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
+ return MAX_METRIC;
+
/* Try to get rate based on HW/SW RC algorithm.
* Rate is returned in units of Kbps, correct this
* to comply with airtime calculation units
--
2.24.0
next reply other threads:[~2019-12-03 18:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-03 18:06 Markus Theil [this message]
2019-12-13 9:13 ` [PATCH] mac80211: mesh: only warn if mesh peering is established Johannes Berg
2019-12-14 10:13 ` Markus Theil
2019-12-14 15:51 ` Markus Theil
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