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IEEE 802.15.4 MAC: Add list management and prioritization logic that will permit the MAC layer to support bound multiple clients.

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This commit is contained in:
Gregory Nutt
2017-06-18 11:00:47 -06:00
parent 87dd6557de
commit 2d4ba3ee3f
11 changed files with 204 additions and 50 deletions
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wireless/ieee802154/mac802154.c
+67 -12
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@@ -73,6 +73,11 @@
static void mac802154_resetqueues(FAR struct ieee802154_privmac_s *priv);
/* MAC client notification */
static void mac802154_notify(FAR struct ieee802154_privmac_s *priv,
FAR struct ieee802154_notif_s *notif);
/* IEEE 802.15.4 PHY Interface OPs */
static int mac802154_radiopoll(FAR const struct ieee802154_radiocb_s *radiocb,
@@ -491,6 +496,34 @@ static void mac802154_purge_worker(FAR void *arg)
}
}
/****************************************************************************
* Name: mac802154_notify
*
* Description:
* Notify every register MAC client.
*
****************************************************************************/
static void mac802154_notify(FAR struct ieee802154_privmac_s *priv,
FAR struct ieee802154_notif_s *notif)
{
FAR struct mac802154_maccb_s *cb;
/* Try to notify every registered MAC client */
for (cb = priv->cb; cb != NULL; cb = cb->flink)
{
/* Does this client want notifications? */
if (cb->notify != NULL)
{
/* Yes.. Notify */
cb->notify(cb, notif);
}
}
}
/****************************************************************************
* Name: mac802154_radiopoll
*
@@ -628,8 +661,9 @@ static void mac802154_txdone_worker(FAR void *arg)
notif->notiftype = IEEE802154_NOTIFY_CONF_DATA;
/* Release the MAC, call the callback, get exclusive access again */
mac802154_givesem(&priv->exclsem);
priv->cb->notify(priv->cb, notif);
mac802154_notify(priv, notif);
mac802154_takesem(&priv->exclsem, false);
}
break;
@@ -1096,8 +1130,7 @@ static void mac802154_rx_dataframe(FAR struct ieee802154_privmac_s *priv,
/* Release the MAC */
mac802154_givesem(&priv->exclsem);
priv->cb->notify(priv->cb, notif);
mac802154_notify(priv, notif);
/* If there was data, pass it along */
@@ -1108,26 +1141,48 @@ static void mac802154_rx_dataframe(FAR struct ieee802154_privmac_s *priv,
}
else
{
FAR struct mac802154_maccb_s *cb;
notify_with_lock:
mac802154_givesem(&priv->exclsem);
notify_without_lock:
/* If there is a registered MCPS callback receiver registered,
* send the frame, otherwise, throw it out.
/* If there are registered MCPS callback receivers registered,
* then forward the frame in priority order. If there are no
* registered receivers or if none of the receivers accept the
* data frame then drop the frame.
*/
if (priv->cb->rxframe != NULL)
for (cb = priv->cb; cb != NULL; cb = cb->flink)
{
priv->cb->rxframe(priv->cb, ind);
}
else
{
/* Free the data indication struct from the pool */
int ret;
ieee802154_ind_free(ind);
/* Does this MAC client want frames? */
if (cb->rxframe != NULL)
{
/* Yes.. Offer this frame to the receiver */
ret = cb->rxframe(cb, ind);
if (ret >= 0)
{
/* The receiver accepted and disposed of the frame and
* its metadata. We are done.
*/
return;
}
}
}
/* We get here if the there are no registered receivers or if
* all of the registered receivers declined the frame.
* Free the data indication struct from the pool
*/
ieee802154_ind_free(ind);
}
}