Eric Lee / smarc-fsl-linux-kernel

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Commit 9e3b71f3436415f917eb569cde792b223cceebc0

Authored by Alexander Aring
Committed by Marcel Holtmann
1 parent 118a5cf8ae

nl802154: avoid address change while running lowpan 

The generation of autoconfigured IPv6 link-local addresses starts with a
notification on interface up.

To handle autoconfiguration according to RFC 4944 requires pan id and
short address to generate an autoconfigured link-local address. This
patch will avoid changing of these link-layer address configuration
while lowpan interface is up.

Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

Showing 1 changed file with 10 additions and 0 deletions Side-by-side Diff

net/ieee802154/nl802154.c
Diff comments   View file @ 9e3b71f
... ... @@ -1074,6 +1074,11 @@
1074 1074 if (netif_running(dev))
1075 1075 return -EBUSY;
1076 1076  
  1077 + if (wpan_dev->lowpan_dev) {
  1078 + if (netif_running(wpan_dev->lowpan_dev))
  1079 + return -EBUSY;
  1080 + }
  1081 +
1077 1082 /* don't change address fields on monitor */
1078 1083 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
1079 1084 !info->attrs[NL802154_ATTR_PAN_ID])
... ... @@ -1104,6 +1109,11 @@
1104 1109 /* conflict here while tx/rx calls */
1105 1110 if (netif_running(dev))
1106 1111 return -EBUSY;
  1112 +
  1113 + if (wpan_dev->lowpan_dev) {
  1114 + if (netif_running(wpan_dev->lowpan_dev))
  1115 + return -EBUSY;
  1116 + }
1107 1117  
1108 1118 /* don't change address fields on monitor */
1109 1119 if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||