From: Xinming Hu <huxm@xxxxxxxxxxx>
This patch processes sub AMSDU frame received in AP mode.
If a packet is multicast/broadcast, it is sent to kernel/upper
layer as well as queued back to AP TX queue so that it can be
sent to other associated stations.
If a packet is unicast and RA is present in associated station list,
it is again requeued into AP TX queue.
If a packet is unicast and RA is not in associated station list,
packet is forwarded to kernel to handle routing logic.
Signed-off-by: Xinming Hu <huxm@xxxxxxxxxxx>
Signed-off-by: Cathy Luo <cluo@xxxxxxxxxxx>
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
---
.../net/wireless/marvell/mwifiex/11n_rxreorder.c | 5 +-
drivers/net/wireless/marvell/mwifiex/main.h | 2 +
drivers/net/wireless/marvell/mwifiex/uap_txrx.c | 90 ++++++++++++++++++++++
3 files changed, 96 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
index 09578c6..a74cc43 100644
--- a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
+++ b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
@@ -59,7 +59,10 @@ static int mwifiex_11n_dispatch_amsdu_pkt(struct mwifiex_private *priv,
skb->len);
}
- ret = mwifiex_recv_packet(priv, rx_skb);
+ if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP)
+ ret = mwifiex_uap_recv_packet(priv, rx_skb);
+ else
+ ret = mwifiex_recv_packet(priv, rx_skb);
if (ret == -1)
mwifiex_dbg(priv->adapter, ERROR,
"Rx of A-MSDU failed");
diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
index eb2c90c..63069dd 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -1019,6 +1019,8 @@ int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter);
int mwifiex_dnld_fw(struct mwifiex_adapter *, struct mwifiex_fw_image *);
int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb);
+int mwifiex_uap_recv_packet(struct mwifiex_private *priv,
+ struct sk_buff *skb);
int mwifiex_process_mgmt_packet(struct mwifiex_private *priv,
struct sk_buff *skb);
diff --git a/drivers/net/wireless/marvell/mwifiex/uap_txrx.c b/drivers/net/wireless/marvell/mwifiex/uap_txrx.c
index 305589e..666e91a 100644
--- a/drivers/net/wireless/marvell/mwifiex/uap_txrx.c
+++ b/drivers/net/wireless/marvell/mwifiex/uap_txrx.c
@@ -269,6 +269,96 @@ int mwifiex_handle_uap_rx_forward(struct mwifiex_private *priv,
return mwifiex_process_rx_packet(priv, skb);
}
+int mwifiex_uap_recv_packet(struct mwifiex_private *priv,
+ struct sk_buff *skb)
+{
+ struct mwifiex_adapter *adapter = adapter;
+ struct mwifiex_sta_node *src_node;
+ struct ethhdr *p_ethhdr;
+ struct sk_buff *skb_uap;
+ struct mwifiex_txinfo *tx_info;
+
+ if (!skb)
+ return -1;
+
+ p_ethhdr = (void *)skb->data;
+ src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source);
+ if (src_node) {
+ src_node->stats.last_rx = jiffies;
+ src_node->stats.rx_bytes += skb->len;
+ src_node->stats.rx_packets++;
+ }
+
+ skb->dev = priv->netdev;
+ skb->protocol = eth_type_trans(skb, priv->netdev);
+ skb->ip_summed = CHECKSUM_NONE;
+
+ /* This is required only in case of 11n and USB/PCIE as we alloc
+ * a buffer of 4K only if its 11N (to be able to receive 4K
+ * AMSDU packets). In case of SD we allocate buffers based
+ * on the size of packet and hence this is not needed.
+ *
+ * Modifying the truesize here as our allocation for each
+ * skb is 4K but we only receive 2K packets and this cause
+ * the kernel to start dropping packets in case where
+ * application has allocated buffer based on 2K size i.e.
+ * if there a 64K packet received (in IP fragments and
+ * application allocates 64K to receive this packet but
+ * this packet would almost double up because we allocate
+ * each 1.5K fragment in 4K and pass it up. As soon as the
+ * 64K limit hits kernel will start to drop rest of the
+ * fragments. Currently we fail the Filesndl-ht.scr script
+ * for UDP, hence this fix
+ */
+ if ((adapter->iface_type == MWIFIEX_USB ||
+ adapter->iface_type == MWIFIEX_PCIE) &&
+ (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
+ skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);
+
+ if (is_multicast_ether_addr(p_ethhdr->h_dest) ||
+ mwifiex_get_sta_entry(priv, p_ethhdr->h_dest)) {
+ if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN)
+ skb_uap =
+ skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
+ else
+ skb_uap = skb_copy(skb, GFP_ATOMIC);
+
+ if (likely(skb_uap)) {
+ tx_info = MWIFIEX_SKB_TXCB(skb_uap);
+ memset(tx_info, 0, sizeof(*tx_info));
+ tx_info->bss_num = priv->bss_num;
+ tx_info->bss_type = priv->bss_type;
+ tx_info->flags |= MWIFIEX_BUF_FLAG_BRIDGED_PKT;
+ __net_timestamp(skb_uap);
+ mwifiex_wmm_add_buf_txqueue(priv, skb_uap);
+ atomic_inc(&adapter->tx_pending);
+ atomic_inc(&adapter->pending_bridged_pkts);
+ if ((atomic_read(&adapter->pending_bridged_pkts) >=
+ MWIFIEX_BRIDGED_PKTS_THR_HIGH)) {
+ mwifiex_dbg(adapter, ERROR,
+ "Tx: Bridge packet limit reached. Drop packet!\n");
+ mwifiex_uap_cleanup_tx_queues(priv);
+ }
+
+ } else {
+ mwifiex_dbg(adapter, ERROR, "failed to allocate skb_uap");
+ }
+
+ mwifiex_queue_main_work(adapter);
+ /* Don't forward Intra-BSS unicast packet to upper layer*/
+ if (mwifiex_get_sta_entry(priv, p_ethhdr->h_dest))
+ return 0;
+ }
+
+ /* Forward multicast/broadcast packet to upper layer*/
+ if (in_interrupt())
+ netif_rx(skb);
+ else
+ netif_rx_ni(skb);
+
+ return 0;
+}
+
/*
* This function processes the packet received on AP interface.
*
--
1.8.1.4
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