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[4/4] doc: networking: document ndisc_evict_nocarrier

Message ID 20211013222710.4162634-4-prestwoj@gmail.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series [1/4] net: arp: introduce arp_evict_nocarrier sysctl parameter | expand

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Context Check Description
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

James Prestwood Oct. 13, 2021, 10:27 p.m. UTC 
Signed-off-by: James Prestwood <prestwoj@gmail.com>
---
 Documentation/networking/ip-sysctl.rst | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst
index 174d9d3ee5c2..7bac67a2f6d7 100644
--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst
@@ -2258,6 +2258,15 @@  ndisc_tclass - INTEGER
 
 	* 0 - (default)
 
+ndisc_evict_nocarrier - BOOLEAN
+	Clears the neighbor discovery table on NOCARRIER events. This option is
+	important for wireless devices where the neighbor discovery cache should
+	not be cleared when roaming between access points on the same network.
+	In most cases this should remain as the default (1).
+
+	- 1 - (default): Clear neighbor discover cache on NOCARRIER events.
+	- 0 - Do not clear neighbor discovery cache on NOCARRIER events.
+
 mldv1_unsolicited_report_interval - INTEGER
 	The interval in milliseconds in which the next unsolicited
 	MLDv1 report retransmit will take place.