diff options
| author | Alexander Aring <aar@pengutronix.de> | 2016-04-11 11:04:16 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2016-04-13 10:41:09 +0200 |
| commit | 9e3b71f3436415f917eb569cde792b223cceebc0 (patch) | |
| tree | 286544f5f1adaf93a25200a2a638c504f29ec068 /net/ieee802154/nl802154.c | |
| parent | ieee802154: add short address helpers (diff) | |
| download | linux-9e3b71f3436415f917eb569cde792b223cceebc0.tar.xz linux-9e3b71f3436415f917eb569cde792b223cceebc0.zip | |
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>
Diffstat (limited to 'net/ieee802154/nl802154.c')
| -rw-r--r-- | net/ieee802154/nl802154.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index 16ef0d9f566e..5f1dc4bfeed5 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -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]) |