[RFC 2/2] iwmc3200wifi: rx aggregation support

Zhu Yi
2009-11-26T06:00:15Z

When the device receives an A-MSDU frame (indicated by flag
IWM_RX_TICKET_AMSDU_MSK), use ieee80211_amsdu_to_8023s to convert
it to a list of 802.3 frames and handled them to upper layer.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
---
drivers/net/wireless/iwmc3200wifi/rx.c | 55 +++++++++++++++++++++++++++-----
1 files changed, 47 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c
index 72c27a3..99f4f8a 100644
--- a/drivers/net/wireless/iwmc3200wifi/rx.c
+++ b/drivers/net/wireless/iwmc3200wifi/rx.c
@@ -1534,6 +1534,34 @@ static void classify8023(struct sk_buff *skb)
}
}

+static int iwm_rx_process_amsdu(struct iwm_priv *iwm, struct sk_buff *skb)
+{
+ struct wireless_dev *wdev = iwm_to_wdev(iwm);
+ struct net_device *ndev = iwm_to_ndev(iwm);
+ struct sk_buff_head list;
+ struct sk_buff *frame;
+ int ret;
+
+ IWM_HEXDUMP(iwm, DBG, RX, "A-MSDU: ", skb->data, skb->len);
+
+ skb_queue_head_init(&list);
+ ret = ieee80211_amsdu_to_8023s(skb, &list, ndev->dev_addr,
+ wdev->iftype);
+ if (ret) {
+ IWM_ERR(iwm, "decode A-MSDU frame failed\n");
+ return -EINVAL;
+ }
+
+ while ((frame = skb_dequeue(&list))) {
+ if (netif_rx_ni(frame) == NET_RX_DROP) {
+ IWM_ERR(iwm, "Packet dropped\n");
+ ndev->stats.rx_dropped++;
+ }
+ }
+
+ return 0;
+}
+
static void iwm_rx_process_packet(struct iwm_priv *iwm,
struct iwm_rx_packet *packet,
struct iwm_rx_ticket_node *ticket_node)
@@ -1548,25 +1576,36 @@ static void iwm_rx_process_packet(struct iwm_priv *iwm,
switch (le16_to_cpu(ticket_node->ticket->action)) {
case IWM_RX_TICKET_RELEASE:
IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
+
+ skb->dev = iwm_to_ndev(iwm);
+ skb->protocol = eth_type_trans(skb, ndev);
+ skb->ip_summed = CHECKSUM_NONE;
+ memset(skb->cb, 0, sizeof(skb->cb));
+
+ ndev->stats.rx_packets++;
+ ndev->stats.rx_bytes += skb->len;
+
classify8023(skb);
iwm_rx_adjust_packet(iwm, packet, ticket_node);
+
+ if (le16_to_cpu(ticket_node->ticket->flags) &
+ IWM_RX_TICKET_AMSDU_MSK) {
+ ret = iwm_rx_process_amsdu(iwm, skb);
+ if (ret < 0)
+ kfree_skb(packet->skb);
+ break;
+ }
+
ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
if (ret < 0) {
IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
"%d\n", ret);
+ kfree_skb(packet->skb);
break;
}

IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);

- skb->dev = iwm_to_ndev(iwm);
- skb->protocol = eth_type_trans(skb, ndev);
- skb->ip_summed = CHECKSUM_NONE;
- memset(skb->cb, 0, sizeof(skb->cb));
-
- ndev->stats.rx_packets++;
- ndev->stats.rx_bytes += skb->len;
-
if (netif_rx_ni(skb) == NET_RX_DROP) {
IWM_ERR(iwm, "Packet dropped\n");
ndev->stats.rx_dropped++;
--
1.6.0.4