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nl802154: avoid address change while running lowpan

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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>
This commit is contained in:
Alexander Aring 2016-04-11 11:04:16 +02:00 committed by Marcel Holtmann
parent 118a5cf8ae
commit 9e3b71f343
1 changed files with 10 additions and 0 deletions
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10
net/ieee802154/nl802154.c
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@ -1074,6 +1074,11 @@ static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
if (netif_running(dev))
return -EBUSY;
if (wpan_dev->lowpan_dev) {
if (netif_running(wpan_dev->lowpan_dev))
return -EBUSY;
}
/* don't change address fields on monitor */
if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
!info->attrs[NL802154_ATTR_PAN_ID])
@ -1105,6 +1110,11 @@ static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
if (netif_running(dev))
return -EBUSY;
if (wpan_dev->lowpan_dev) {
if (netif_running(wpan_dev->lowpan_dev))
return -EBUSY;
}
/* don't change address fields on monitor */
if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
!info->attrs[NL802154_ATTR_SHORT_ADDR])