This patch fix the max sifs size correction when the
IEEE802154_HW_TX_OMIT_CKSUM flag is set. With this flag the sk_buff
doesn't contain the CRC, because the transceiver will add the CRC
while transmit.
Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx>
---
net/mac802154/util.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/net/mac802154/util.c b/net/mac802154/util.c
index 5fc9790..04e13d9 100644
--- a/net/mac802154/util.c
+++ b/net/mac802154/util.c
@@ -65,8 +65,18 @@ void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
{
if (ifs_handling) {
struct ieee802154_local *local = hw_to_local(hw);
+ u8 max_sifs_size;
- if (skb->len > 18)
+ /* If transceiver sets CRC on his own we need to use lifs
+ * threshold len above 16 otherwise 18, because it's not
+ * part of skb->len.
+ */
+ if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM)
+ max_sifs_size = 16;
+ else
+ max_sifs_size = 18;
+
+ if (skb->len > max_sifs_size)
hrtimer_start(&local->ifs_timer,
ktime_set(0, hw->phy->lifs_period * NSEC_PER_USEC),
HRTIMER_MODE_REL);
--
2.3.0
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