[PATCH] nl80211: clarify comment for mesh PLINK_BLOCKED state

Felix Fietkau
2021-12-20T10:51:55Z

When a mesh link is in blocked state, it is very useful to still allow
auth requests from the peer to re-establish it.
When a remote node is power cycled, the peer state can easily end up
in blocked state if multiple auth attempts are performed. Since this
can lead to several minutes of downtime, we should accept auth attempts
of the peer after it has come back.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
I will also re-send a hostapd patch that changes the behavior accordingly

include/uapi/linux/nl80211.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 61cab81e920d..0e703b463fac 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -5600,7 +5600,7 @@ enum nl80211_if_combination_attrs {
* @NL80211_PLINK_ESTAB: mesh peer link is established
* @NL80211_PLINK_HOLDING: mesh peer link is being closed or cancelled
* @NL80211_PLINK_BLOCKED: all frames transmitted from this mesh
- * plink are discarded
+ * plink are discarded, except for authentication frames
* @NUM_NL80211_PLINK_STATES: number of peer link states
* @MAX_NL80211_PLINK_STATES: highest numerical value of plink states
*/
--
2.34.1