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| author | Alan Ott <alan@signal11.us> | 2013-04-03 04:00:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-07 17:06:43 -0400 |
| commit | 7dd43d356e739ea0fbeb832722fec36ba4e47540 (patch) | |
| tree | c33ac6630cf6b107e4faf79706fc252118a0381c /net/mac802154 | |
| parent | 524fba6c14d2892bfa27c01577d544d6380291ba (diff) | |
| download | linux-7dd43d356e739ea0fbeb832722fec36ba4e47540.tar.gz linux-7dd43d356e739ea0fbeb832722fec36ba4e47540.tar.bz2 linux-7dd43d356e739ea0fbeb832722fec36ba4e47540.zip | |
mac802154: Do not try to resend failed packets
When ops->xmit() fails, drop the packet. Devices which support hardware
ack and retry (which include all devices currently supported by mainline),
will automatically retry sending the packet (in the hardware) up to 3
times, per the 802.15.4 spec. There is no need, and it is incorrect to
try to do it in mac802154.
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac802154')
| -rw-r--r-- | net/mac802154/mac802154.h | 2 | ||||
| -rw-r--r-- | net/mac802154/tx.c | 12 |
2 files changed, 2 insertions, 12 deletions
diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h index 21fa386f4675..5c9e021994ba 100644 --- a/net/mac802154/mac802154.h +++ b/net/mac802154/mac802154.h @@ -88,8 +88,6 @@ struct mac802154_sub_if_data { #define mac802154_to_priv(_hw) container_of(_hw, struct mac802154_priv, hw) -#define MAC802154_MAX_XMIT_ATTEMPTS 3 - #define MAC802154_CHAN_NONE (~(u8)0) /* No channel is assigned */ extern struct ieee802154_reduced_mlme_ops mac802154_mlme_reduced; diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c index 4e09d070995a..726487493e5c 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -39,7 +39,6 @@ struct xmit_work { struct mac802154_priv *priv; u8 chan; u8 page; - u8 xmit_attempts; }; static void mac802154_xmit_worker(struct work_struct *work) @@ -60,18 +59,12 @@ static void mac802154_xmit_worker(struct work_struct *work) } res = xw->priv->ops->xmit(&xw->priv->hw, xw->skb); + if (res) + pr_debug("transmission failed\n"); 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); @@ -114,7 +107,6 @@ netdev_tx_t mac802154_tx(struct mac802154_priv *priv, struct sk_buff *skb, work->priv = priv; work->page = page; work->chan = chan; - work->xmit_attempts = 0; queue_work(priv->dev_workqueue, &work->work); |