diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00.h | 6 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00dev.c | 22 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00pci.c | 23 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00queue.c | 39 | ||||
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00usb.c | 63 |
5 files changed, 74 insertions, 79 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h index 938d375027be..0da8f972a1b2 100644 --- a/drivers/net/wireless/rt2x00/rt2x00.h +++ b/drivers/net/wireless/rt2x00/rt2x00.h @@ -930,6 +930,12 @@ static inline u16 get_duration_res(const unsigned int size, const u8 rate) } /** + * rt2x00queue_alloc_rxskb - allocate a skb for RX purposes. + * @queue: The queue for which the skb will be applicable. + */ +struct sk_buff *rt2x00queue_alloc_rxskb(struct data_queue *queue); + +/** * rt2x00queue_create_tx_descriptor - Create TX descriptor from mac80211 input * @entry: The entry which will be used to transfer the TX frame. * @txdesc: rt2x00 TX descriptor which will be initialized by this function. diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c index 48f4aec1a4d9..ce1f7bbd3d7a 100644 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c @@ -554,14 +554,36 @@ void rt2x00lib_rxdone(struct queue_entry *entry, { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status; + unsigned int header_size = ieee80211_get_hdrlen_from_skb(entry->skb); struct ieee80211_supported_band *sband; struct ieee80211_hdr *hdr; const struct rt2x00_rate *rate; + unsigned int align; unsigned int i; int idx = -1; u16 fc; /* + * The data behind the ieee80211 header must be + * aligned on a 4 byte boundary. We already reserved + * 2 bytes for header_size % 4 == 2 optimization. + * To determine the number of bytes which the data + * should be moved to the left, we must add these + * 2 bytes to the header_size. + */ + align = (header_size + 2) % 4; + + if (align) { + skb_push(entry->skb, align); + /* Move entire frame in 1 command */ + memmove(entry->skb->data, entry->skb->data + align, + rxdesc->size); + } + + /* Update data pointers, trim buffer to correct size */ + skb_trim(entry->skb, rxdesc->size); + + /* * Update RX statistics. */ sband = &rt2x00dev->bands[rt2x00dev->curr_band]; diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c index a9819aad5e7d..82e80b69d0be 100644 --- a/drivers/net/wireless/rt2x00/rt2x00pci.c +++ b/drivers/net/wireless/rt2x00/rt2x00pci.c @@ -79,11 +79,8 @@ void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev) struct data_queue *queue = rt2x00dev->rx; struct queue_entry *entry; struct queue_entry_priv_pci *entry_priv; - struct ieee80211_hdr *hdr; struct skb_frame_desc *skbdesc; struct rxdone_entry_desc rxdesc; - int header_size; - int align; u32 word; while (1) { @@ -97,27 +94,15 @@ void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev) memset(&rxdesc, 0, sizeof(rxdesc)); rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); - hdr = (struct ieee80211_hdr *)entry_priv->data; - header_size = - ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)); - - /* - * The data behind the ieee80211 header must be - * aligned on a 4 byte boundary. - */ - align = header_size % 4; - /* - * Allocate the sk_buffer, initialize it and copy - * all data into it. + * Allocate the sk_buffer and copy all data into it. */ - entry->skb = dev_alloc_skb(rxdesc.size + align); + entry->skb = rt2x00queue_alloc_rxskb(queue); if (!entry->skb) return; - skb_reserve(entry->skb, align); - memcpy(skb_put(entry->skb, rxdesc.size), - entry_priv->data, rxdesc.size); + memcpy(entry->skb->data, entry_priv->data, rxdesc.size); + skb_trim(entry->skb, rxdesc.size); /* * Fill in skb descriptor diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c index 493066519ef3..2f3dd1d91a12 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.c +++ b/drivers/net/wireless/rt2x00/rt2x00queue.c @@ -29,6 +29,45 @@ #include "rt2x00.h" #include "rt2x00lib.h" +struct sk_buff *rt2x00queue_alloc_rxskb(struct data_queue *queue) +{ + struct sk_buff *skb; + unsigned int frame_size; + unsigned int reserved_size; + + /* + * The frame size includes descriptor size, because the + * hardware directly receive the frame into the skbuffer. + */ + frame_size = queue->data_size + queue->desc_size; + + /* + * For the allocation we should keep a few things in mind: + * 1) 4byte alignment of 802.11 payload + * + * For (1) we need at most 4 bytes to guarentee the correct + * alignment. We are going to optimize the fact that the chance + * that the 802.11 header_size % 4 == 2 is much bigger then + * anything else. However since we need to move the frame up + * to 3 bytes to the front, which means we need to preallocate + * 6 bytes. + */ + reserved_size = 6; + + /* + * Allocate skbuffer. + */ + skb = dev_alloc_skb(frame_size + reserved_size); + if (!skb) + return NULL; + + skb_reserve(skb, reserved_size); + skb_put(skb, frame_size); + + return skb; +} +EXPORT_SYMBOL_GPL(rt2x00queue_alloc_rxskb); + void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, struct txentry_desc *txdesc) { diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c index 797023cad947..33833bc6d665 100644 --- a/drivers/net/wireless/rt2x00/rt2x00usb.c +++ b/drivers/net/wireless/rt2x00/rt2x00usb.c @@ -260,44 +260,6 @@ EXPORT_SYMBOL_GPL(rt2x00usb_kick_tx_queue); /* * RX data handlers. */ -static struct sk_buff* rt2x00usb_alloc_rxskb(struct data_queue *queue) -{ - struct sk_buff *skb; - unsigned int frame_size; - unsigned int reserved_size; - - /* - * The frame size includes descriptor size, because the - * hardware directly receive the frame into the skbuffer. - */ - frame_size = queue->data_size + queue->desc_size; - - /* - * For the allocation we should keep a few things in mind: - * 1) 4byte alignment of 802.11 payload - * - * For (1) we need at most 4 bytes to guarentee the correct - * alignment. We are going to optimize the fact that the chance - * that the 802.11 header_size % 4 == 2 is much bigger then - * anything else. However since we need to move the frame up - * to 3 bytes to the front, which means we need to preallocate - * 6 bytes. - */ - reserved_size = 6; - - /* - * Allocate skbuffer. - */ - skb = dev_alloc_skb(frame_size + reserved_size); - if (!skb) - return NULL; - - skb_reserve(skb, reserved_size); - skb_put(skb, frame_size); - - return skb; -} - static void rt2x00usb_interrupt_rxdone(struct urb *urb) { struct queue_entry *entry = (struct queue_entry *)urb->context; @@ -305,8 +267,6 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb) struct sk_buff *skb; struct skb_frame_desc *skbdesc; struct rxdone_entry_desc rxdesc; - unsigned int header_size; - unsigned int align; if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) || !test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) @@ -330,26 +290,9 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb) memset(&rxdesc, 0, sizeof(rxdesc)); rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc); - header_size = ieee80211_get_hdrlen_from_skb(entry->skb); - /* - * The data behind the ieee80211 header must be - * aligned on a 4 byte boundary. We already reserved - * 2 bytes for header_size % 4 == 2 optimization. - * To determine the number of bytes which the data - * should be moved to the left, we must add these - * 2 bytes to the header_size. + * Trim the skb to the correct size. */ - align = (header_size + 2) % 4; - - if (align) { - skb_push(entry->skb, align); - /* Move entire frame in 1 command */ - memmove(entry->skb->data, entry->skb->data + align, - rxdesc.size); - } - - /* Update data pointers, trim buffer to correct size */ skb_trim(entry->skb, rxdesc.size); /* @@ -357,7 +300,7 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb) * If allocation fails, we should drop the current frame * so we can recycle the existing sk buffer for the new frame. */ - skb = rt2x00usb_alloc_rxskb(entry->queue); + skb = rt2x00queue_alloc_rxskb(entry->queue); if (!skb) goto skip_entry; @@ -529,7 +472,7 @@ int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev) */ entry_size = rt2x00dev->rx->data_size + rt2x00dev->rx->desc_size; for (i = 0; i < rt2x00dev->rx->limit; i++) { - skb = rt2x00usb_alloc_rxskb(rt2x00dev->rx); + skb = rt2x00queue_alloc_rxskb(rt2x00dev->rx); if (!skb) goto exit; |