From 7bea1ea7b4c16af7c9263648e10f7edc88e5fc21 Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Sun, 9 Nov 2014 08:36:57 +0100 Subject: 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 Signed-off-by: Marcel Holtmann --- net/ieee802154/nl-mac.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'net/ieee802154') 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, ¶ms); + 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, ¶ms); 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, ¶ms); + rtnl_unlock(); wpan_phy_put(phy); dev_put(dev); -- cgit v1.2.3