iwlagn: move the Rx dispatching to the upper layer

The upper layer receives a pointer to an iwl_rx_mem_buffer. I would prefer the
upper layer to receive a pointer to an iwl_rx_packet, but this is impossible
since the Rx path needs to add the address of the page to the skb.
I may find a solution later.

All the pre_rx_handler and notification code has been moved to the upper layer.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index f3f3efe38ce2..c5eb379246ff 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -1105,3 +1105,49 @@ void iwl_setup_rx_handlers(struct iwl_priv *priv)
         /* Set up hardware specific Rx handlers */
         priv->cfg->ops->lib->rx_handler_setup(priv);
 }
+
+void iwl_rx_dispatch(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+{
+        struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+        /*
+         * Do the notification wait before RX handlers so
+         * even if the RX handler consumes the RXB we have
+         * access to it in the notification wait entry.
+         */
+        if (!list_empty(&priv->_agn.notif_waits)) {
+                struct iwl_notification_wait *w;
+
+                spin_lock(&priv->_agn.notif_wait_lock);
+                list_for_each_entry(w, &priv->_agn.notif_waits, list) {
+                        if (w->cmd != pkt->hdr.cmd)
+                                continue;
+                        IWL_DEBUG_RX(priv,
+                                "Notif: %s, 0x%02x - wake the callers up\n",
+                                get_cmd_string(pkt->hdr.cmd),
+                                pkt->hdr.cmd);
+                        w->triggered = true;
+                        if (w->fn)
+                                w->fn(priv, pkt, w->fn_data);
+                }
+                spin_unlock(&priv->_agn.notif_wait_lock);
+
+                wake_up_all(&priv->_agn.notif_waitq);
+        }
+
+        if (priv->pre_rx_handler)
+                priv->pre_rx_handler(priv, rxb);
+
+        /* Based on type of command response or notification,
+         *   handle those that need handling via function in
+         *   rx_handlers table.  See iwl_setup_rx_handlers() */
+        if (priv->rx_handlers[pkt->hdr.cmd]) {
+                priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
+                priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
+        } else {
+                /* No handling needed */
+                IWL_DEBUG_RX(priv,
+                        "No handler needed for %s, 0x%02x\n",
+                        get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
+        }
+}