1 files changed, 52 insertions, 51 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 577029efe320..a0bd36fc4d2e 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -1,5 +1,6 @@
 /*
-        Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
+        Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+        Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
         <http://rt2x00.serialmonkey.com>
 
         This program is free software; you can redistribute it and/or modify
@@ -23,6 +24,7 @@
         Abstract: rt2x00 queue specific routines.
  */
 
+#include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/dma-mapping.h>
@@ -103,7 +105,7 @@ void rt2x00queue_map_txskb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb)
          * is also mapped to the DMA so it can be used for transfering
          * additional descriptor information to the hardware.
          */
-        skb_push(skb, rt2x00dev->hw->extra_tx_headroom);
+        skb_push(skb, rt2x00dev->ops->extra_tx_headroom);
 
         skbdesc->skb_dma =
             dma_map_single(rt2x00dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
@@ -111,7 +113,7 @@ void rt2x00queue_map_txskb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb)
         /*
          * Restore data pointer to original location again.
          */
-        skb_pull(skb, rt2x00dev->hw->extra_tx_headroom);
+        skb_pull(skb, rt2x00dev->ops->extra_tx_headroom);
 
         skbdesc->flags |= SKBDESC_DMA_MAPPED_TX;
 }
@@ -133,7 +135,7 @@ void rt2x00queue_unmap_skb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb)
                  * by the driver, but it was actually mapped to DMA.
                  */
                 dma_unmap_single(rt2x00dev->dev, skbdesc->skb_dma,
-                                 skb->len + rt2x00dev->hw->extra_tx_headroom,
+                                 skb->len + rt2x00dev->ops->extra_tx_headroom,
                                  DMA_TO_DEVICE);
                 skbdesc->flags &= ~SKBDESC_DMA_MAPPED_TX;
         }
@@ -161,10 +163,10 @@ void rt2x00queue_align_frame(struct sk_buff *skb)
         skb_trim(skb, frame_length);
 }
 
-void rt2x00queue_align_payload(struct sk_buff *skb, unsigned int header_lengt)
+void rt2x00queue_align_payload(struct sk_buff *skb, unsigned int header_length)
 {
         unsigned int frame_length = skb->len;
-        unsigned int align = ALIGN_SIZE(skb, header_lengt);
+        unsigned int align = ALIGN_SIZE(skb, header_length);
 
         if (!align)
                 return;
@@ -176,55 +178,45 @@ void rt2x00queue_align_payload(struct sk_buff *skb, unsigned int header_lengt)
 
 void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length)
 {
-        struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
-        unsigned int frame_length = skb->len;
+        unsigned int payload_length = skb->len - header_length;
         unsigned int header_align = ALIGN_SIZE(skb, 0);
         unsigned int payload_align = ALIGN_SIZE(skb, header_length);
-        unsigned int l2pad = 4 - (payload_align - header_align);
+        unsigned int l2pad = payload_length ? L2PAD_SIZE(header_length) : 0;
 
-        if (header_align == payload_align) {
-                /*
-                 * Both header and payload must be moved the same
-                 * amount of bytes to align them properly. This means
-                 * we don't use the L2 padding but just move the entire
-                 * frame.
-                 */
-                rt2x00queue_align_frame(skb);
-        } else if (!payload_align) {
-                /*
-                 * Simple L2 padding, only the header needs to be moved,
-                 * the payload is already properly aligned.
-                 */
-                skb_push(skb, header_align);
-                memmove(skb->data, skb->data + header_align, frame_length);
-                skbdesc->flags |= SKBDESC_L2_PADDED;
-        } else {
-                /*
-                 *
-                 * Complicated L2 padding, both header and payload need
-                 * to be moved. By default we only move to the start
-                 * of the buffer, so our header alignment needs to be
-                 * increased if there is not enough room for the header
-                 * to be moved.
-                 */
-                if (payload_align > header_align)
-                        header_align += 4;
+        /*
+         * Adjust the header alignment if the payload needs to be moved more
+         * than the header.
+         */
+        if (payload_align > header_align)
+                header_align += 4;
 
-                skb_push(skb, header_align);
-                memmove(skb->data, skb->data + header_align, header_length);
+        /* There is nothing to do if no alignment is needed */
+        if (!header_align)
+                return;
+
+        /* Reserve the amount of space needed in front of the frame */
+        skb_push(skb, header_align);
+
+        /*
+         * Move the header.
+         */
+        memmove(skb->data, skb->data + header_align, header_length);
+
+        /* Move the payload, if present and if required */
+        if (payload_length && payload_align)
                 memmove(skb->data + header_length + l2pad,
-                        skb->data + header_length + l2pad + header_align,
-                        frame_length - header_length);
-                skbdesc->flags |= SKBDESC_L2_PADDED;
-        }
+                        skb->data + header_length + l2pad + payload_align,
+                        payload_length);
+
+        /* Trim the skb to the correct size */
+        skb_trim(skb, header_length + l2pad + payload_length);
 }
 
 void rt2x00queue_remove_l2pad(struct sk_buff *skb, unsigned int header_length)
 {
-        struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
-        unsigned int l2pad = 4 - (header_length & 3);
+        unsigned int l2pad = L2PAD_SIZE(header_length);
 
-        if (!l2pad || (skbdesc->flags & SKBDESC_L2_PADDED))
+        if (!l2pad)
                 return;
 
         memmove(skb->data + l2pad, skb->data, header_length);
@@ -345,7 +337,9 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
          * Header and alignment information.
          */
         txdesc->header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
-        txdesc->l2pad = ALIGN_SIZE(entry->skb, txdesc->header_length);
+        if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags) &&
+            (entry->skb->len > txdesc->header_length))
+                txdesc->l2pad = L2PAD_SIZE(txdesc->header_length);
 
         /*
          * Check whether this frame is to be acked.
@@ -386,10 +380,13 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
 
         /*
          * Beacons and probe responses require the tsf timestamp
-         * to be inserted into the frame.
+         * to be inserted into the frame, except for a frame that has been injected
+         * through a monitor interface. This latter is needed for testing a
+         * monitor interface.
          */
-        if (ieee80211_is_beacon(hdr->frame_control) ||
-            ieee80211_is_probe_resp(hdr->frame_control))
+        if ((ieee80211_is_beacon(hdr->frame_control) ||
+            ieee80211_is_probe_resp(hdr->frame_control)) &&
+            (!(tx_info->flags & IEEE80211_TX_CTL_INJECTED)))
                 __set_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags);
 
         /*
@@ -453,7 +450,8 @@ static void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
                 rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, queue->qid);
 }
 
-int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
+int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb,
+                               bool local)
 {
         struct ieee80211_tx_info *tx_info;
         struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
@@ -494,10 +492,13 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
         skbdesc->tx_rate_idx = rate_idx;
         skbdesc->tx_rate_flags = rate_flags;
 
+        if (local)
+                skbdesc->flags |= SKBDESC_NOT_MAC80211;
+
         /*
          * When hardware encryption is supported, and this frame
          * is to be encrypted, we should strip the IV/EIV data from
-         * the frame so we can provide it to the driver seperately.
+         * the frame so we can provide it to the driver separately.
          */
         if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc.flags) &&
             !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags)) {