linux-kernel - [PATCH 1/6] mac802154: Immediately retry sending failed packets

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Date:	Tue,  2 Apr 2013 14:47:56 -0400
From:	Alan Ott <alan@...nal11.us>
To:	Alexander Smirnov <alex.bluesman.smirnov@...il.com>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	"David S. Miller" <davem@...emloft.net>
Cc:	linux-zigbee-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, Alan Ott <alan@...nal11.us>
Subject: [PATCH 1/6] mac802154: Immediately retry sending failed packets

When ops->xmit() fails, immediately retry. Previously the packet was sent
to the back of the workqueue.

Signed-off-by: Alan Ott <alan@...nal11.us>
---
 net/mac802154/tx.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c
index 4e09d07..fbf937c 100644
--- a/net/mac802154/tx.c
+++ b/net/mac802154/tx.c
@@ -59,19 +59,18 @@ static void mac802154_xmit_worker(struct work_struct *work)
 		}
 	}
 
-	res = xw->priv->ops->xmit(&xw->priv->hw, xw->skb);
+	do {
+		res = xw->priv->ops->xmit(&xw->priv->hw, xw->skb);
+		if (res && ++xw->xmit_attempts >= MAC802154_MAX_XMIT_ATTEMPTS) {
+			pr_debug("transmission failed for %d times",
+				 MAC802154_MAX_XMIT_ATTEMPTS);
+			break;
+		}
+	} while (res);
 
 out:
 	mutex_unlock(&xw->priv->phy->pib_lock);
 
-	if (res) {
-		if (xw->xmit_attempts++ < MAC802154_MAX_XMIT_ATTEMPTS) {
-			queue_work(xw->priv->dev_workqueue, &xw->work);
-			return;
-		} else
-			pr_debug("transmission failed for %d times",
-				 MAC802154_MAX_XMIT_ATTEMPTS);
-	}
 
 	dev_kfree_skb(xw->skb);
 
-- 
1.7.11.2

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