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iwlagn: move the Rx dispatching to the upper layer

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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>
This commit is contained in:
Emmanuel Grumbach 2011-07-07 07:59:02 -07:00 committed by Wey-Yi Guy
parent a27367d25d
commit 1ab9f6c11b
3 changed files with 52 additions and 38 deletions
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42
drivers/net/wireless/iwlwifi/iwl-agn.c
View File

@ -513,6 +513,9 @@ static void iwl_rx_handle(struct iwl_priv *priv)
DMA_FROM_DEVICE);
pkt = rxb_addr(rxb);
IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
len += sizeof(u32); /* account for status word */
trace_iwlwifi_dev_rx(priv, pkt, len);
@ -531,44 +534,7 @@ static void iwl_rx_handle(struct iwl_priv *priv)
(pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
(pkt->hdr.cmd != REPLY_TX);
/*
* 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) {
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]) {
IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
i, get_cmd_string(pkt->hdr.cmd), 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,
"r %d i %d No handler needed for %s, 0x%02x\n",
r, i, get_cmd_string(pkt->hdr.cmd),
pkt->hdr.cmd);
}
iwl_rx_dispatch(priv, rxb);
/*
* XXX: After here, we should always check rxb->page

2
drivers/net/wireless/iwlwifi/iwl-agn.h
View File

@ -187,6 +187,8 @@ void iwlagn_rx_replenish(struct iwl_priv *priv);
void iwlagn_rx_replenish_now(struct iwl_priv *priv);
int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band);
void iwl_setup_rx_handlers(struct iwl_priv *priv);
void iwl_rx_dispatch(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
/* tx */
void iwlagn_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq,

46
drivers/net/wireless/iwlwifi/iwl-rx.c
View File

@ -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);
}
}