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authorAlexander Aring <alex.aring@gmail.com>2014-11-09 08:36:57 +0100
committerMarcel Holtmann <marcel@holtmann.org>2014-11-09 19:50:29 +0100
commit7bea1ea7b4c16af7c9263648e10f7edc88e5fc21 (patch)
tree8092b084c39e45226260d031c9e4d477abbeed0a /net/ieee802154
parentb03c9cccfa808f1b314097b162a36c3937cb818e (diff)
ieee802154: netlink add rtnl lock
This patch adds rtnl lock hold mechanism while accessing wpan_dev attributes. Furthermore these attributes should be protected by rtnl lock and netif_running only. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/ieee802154')
-rw-r--r--net/ieee802154/nl-mac.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index 7127b9d1a684..50e9863823a5 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -113,7 +113,9 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
if (ops->get_mac_params) {
struct ieee802154_mac_params params;
+ rtnl_lock();
ops->get_mac_params(dev, &params);
+ rtnl_unlock();
if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
params.transmit_power) ||
@@ -348,8 +350,10 @@ int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
+ rtnl_lock();
ret = ieee802154_mlme_ops(dev)->start_req(dev, &addr, channel, page,
bcn_ord, sf_ord, pan_coord, blx, coord_realign);
+ rtnl_unlock();
/* FIXME: add validation for unused parameters to be sane
* for SoftMAC
@@ -497,6 +501,7 @@ int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
phy = dev->ieee802154_ptr->wpan_phy;
get_device(&phy->dev);
+ rtnl_lock();
ops->get_mac_params(dev, &params);
if (info->attrs[IEEE802154_ATTR_TXPOWER])
@@ -524,6 +529,7 @@ int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
rc = ops->set_mac_params(dev, &params);
+ rtnl_unlock();
wpan_phy_put(phy);
dev_put(dev);

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