iwlwifi: 802.11n add support to 8K A-MSDU Rx frames
This patch give the iwlwifi the ability to support A-MSDU up to 8K
Please notice - in order to work in 8K A-MSDU ucode support is needed,
version 4.44.1.19 (soon to be published). 4K A-MSDU works in current ucode
version as well.
Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 9f89f59..3a9f14d 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -70,6 +70,7 @@
int iwl4965_param_hwcrypto; /* def: using software encryption */
static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
+int iwl4965_param_amsdu_size_8K; /* def: enable 8K amsdu size */
/*
* module name, copyright, version, etc.
@@ -3263,7 +3264,7 @@
__le16 phy_flags_hw = cpu_to_le16(phy_flags);
/* We received data from the HW, so stop the watchdog */
- if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
+ if (len > priv->hw_setting.rx_buf_size - sizeof(*iwl4965_rt)) {
IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
return;
}
@@ -4506,7 +4507,8 @@
/* Alloc a new receive buffer */
rxb->skb =
- alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
+ alloc_skb(priv->hw_setting.rx_buf_size,
+ __GFP_NOWARN | GFP_ATOMIC);
if (!rxb->skb) {
if (net_ratelimit())
printk(KERN_CRIT DRV_NAME
@@ -4522,7 +4524,7 @@
/* Get physical address of RB/SKB */
rxb->dma_addr =
pci_map_single(priv->pci_dev, rxb->skb->data,
- IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
list_add_tail(&rxb->list, &rxq->rx_free);
rxq->free_count++;
}
@@ -4565,7 +4567,8 @@
if (rxq->pool[i].skb != NULL) {
pci_unmap_single(priv->pci_dev,
rxq->pool[i].dma_addr,
- IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ priv->hw_setting.rx_buf_size,
+ PCI_DMA_FROMDEVICE);
dev_kfree_skb(rxq->pool[i].skb);
}
}
@@ -4616,7 +4619,8 @@
if (rxq->pool[i].skb != NULL) {
pci_unmap_single(priv->pci_dev,
rxq->pool[i].dma_addr,
- IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ priv->hw_setting.rx_buf_size,
+ PCI_DMA_FROMDEVICE);
priv->alloc_rxb_skb--;
dev_kfree_skb(rxq->pool[i].skb);
rxq->pool[i].skb = NULL;
@@ -4750,7 +4754,7 @@
rxq->queue[i] = NULL;
pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
- IWL_RX_BUF_SIZE,
+ priv->hw_setting.rx_buf_size,
PCI_DMA_FROMDEVICE);
pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
@@ -4803,7 +4807,8 @@
}
pci_unmap_single(priv->pci_dev, rxb->dma_addr,
- IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+ priv->hw_setting.rx_buf_size,
+ PCI_DMA_FROMDEVICE);
spin_lock_irqsave(&rxq->lock, flags);
list_add_tail(&rxb->list, &priv->rxq.rx_used);
spin_unlock_irqrestore(&rxq->lock, flags);
@@ -9523,6 +9528,8 @@
/* QoS */
module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
+module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
+MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
module_exit(iwl4965_exit);
module_init(iwl4965_init);