xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mac802154: remove mib lock

Browse Source 
This patch removes the mib lock. The new locking mechanism is to protect
the mib values with the rtnl lock. Note that this isn't always necessary
if we have an interface up the most mib values are readonly (e.g.
address settings). With this behaviour we can remove locking in
hotpath like frame parsing completely. It depends on context if we need
to hold the rtnl lock or not, this makes the callbacks of
ieee802154_mlme_ops unnecessary because these callbacks hols always the
locks.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring
2015-05-22 17:43:54 +02:00
committed by Marcel Holtmann
parent 344f8c119d
commit c947f7e1e3
10 changed files with 18 additions and 114 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
net/ieee802154/socket.c
View File

@@ -64,10 +64,8 @@ ieee802154_get_dev(struct net *net, const struct ieee802154_addr *addr)
if (tmp->type != ARPHRD_IEEE802154)
continue;
pan_id = ieee802154_mlme_ops(tmp)->get_pan_id(tmp);
short_addr =
ieee802154_mlme_ops(tmp)->get_short_addr(tmp);
pan_id = tmp->ieee802154_ptr->pan_id;
short_addr = tmp->ieee802154_ptr->short_addr;
if (pan_id == addr->pan_id &&
short_addr == addr->short_addr) {
dev = tmp;
@@ -797,9 +795,9 @@ static int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
/* Data frame processing */
BUG_ON(dev->type != ARPHRD_IEEE802154);
pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
short_addr = ieee802154_mlme_ops(dev)->get_short_addr(dev);
hw_addr = ieee802154_devaddr_from_raw(dev->dev_addr);
pan_id = dev->ieee802154_ptr->pan_id;
short_addr = dev->ieee802154_ptr->short_addr;
hw_addr = dev->ieee802154_ptr->extended_addr;
read_lock(&dgram_lock);
sk_for_each(sk, &dgram_head) {