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| author |   Alexander Aring <alex.aring@gmail.com> | 2015-06-24 11:36:36 +0200 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2015-07-23 17:10:49 +0200 |
| commit | 3cf24cf8c3c06f9a6cacc8fc2cad94661b6096b6 (patch) | |
| tree | b1192515ba1dcac09a108816386df1145a003a7c /net/mac802154/rx.c | |
| parent | cfg802154: add PM hooks (diff) | |
| download | linux-dev-3cf24cf8c3c06f9a6cacc8fc2cad94661b6096b6.tar.xz linux-dev-3cf24cf8c3c06f9a6cacc8fc2cad94661b6096b6.zip | |
mac802154: cfg: add suspend and resume callbacks
This patch introduces suspend and resume callbacks to mac802154. When
doing suspend we calling the stop driver callback which should stop the
receiving of frames. A transceiver should go into low-power mode then.
Calling resume will call the start driver callback, which starts receiving
again and allow to transmit frames.
This was tested only with the fakelb driver and a qemu vm by doing the
following commands:
echo "devices" > /sys/power/pm_test
echo "freeze" > /sys/power/state
while doing some high traffic between two fakelb phys.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/mac802154/rx.c')
| -rw-r--r-- | net/mac802154/rx.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/net/mac802154/rx.c b/net/mac802154/rx.c index d93ad2d4a4fc..5a258c11ed3b 100644 --- a/net/mac802154/rx.c +++ b/net/mac802154/rx.c @@ -253,6 +253,9 @@ void ieee802154_rx(struct ieee802154_hw *hw, struct sk_buff *skb) WARN_ON_ONCE(softirq_count() == 0); + if (local->suspended) + goto drop; + /* TODO: When a transceiver omits the checksum here, we * add an own calculated one. This is currently an ugly * solution because the monitor needs a crc here. @@ -273,8 +276,7 @@ void ieee802154_rx(struct ieee802154_hw *hw, struct sk_buff *skb) crc = crc_ccitt(0, skb->data, skb->len); if (crc) { rcu_read_unlock(); - kfree_skb(skb); - return; + goto drop; } } /* remove crc */ @@ -283,6 +285,10 @@ void ieee802154_rx(struct ieee802154_hw *hw, struct sk_buff *skb) __ieee802154_rx_handle_packet(local, skb); rcu_read_unlock(); + + return; +drop: + kfree_skb(skb); } EXPORT_SYMBOL(ieee802154_rx); |