/*
* RX control handlers
*/
void rt2800mmio_fill_rxdone(struct queue_entry *entry,
struct rxdone_entry_desc *rxdesc)
{
struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
__le32 *rxd = entry_priv->desc;
u32 word;
word = rt2x00_desc_read(rxd, 3);
if (rt2x00_get_field32(word, RXD_W3_CRC_ERROR))
rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
/*
* Unfortunately we don't know the cipher type used during
* decryption. This prevents us from correct providing
* correct statistics through debugfs.
*/
rxdesc->cipher_status = rt2x00_get_field32(word, RXD_W3_CIPHER_ERROR);
if (rt2x00_get_field32(word, RXD_W3_DECRYPTED)) {
/*
* Hardware has stripped IV/EIV data from 802.11 frame during
* decryption. Unfortunately the descriptor doesn't contain
* any fields with the EIV/IV data either, so they can't
* be restored by rt2x00lib.
*/
rxdesc->flags |= RX_FLAG_IV_STRIPPED;
/*
* The hardware has already checked the Michael Mic and has
* stripped it from the frame. Signal this to mac80211.
*/
rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS) {
rxdesc->flags |= RX_FLAG_DECRYPTED;
} else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC) {
/*
* In order to check the Michael Mic, the packet must have
* been decrypted. Mac80211 doesnt check the MMIC failure
* flag to initiate MMIC countermeasures if the decoded flag
* has not been set.
*/
rxdesc->flags |= RX_FLAG_DECRYPTED;
rxdesc->flags |= RX_FLAG_MMIC_ERROR;
}
}
if (rt2x00_get_field32(word, RXD_W3_MY_BSS))
rxdesc->dev_flags |= RXDONE_MY_BSS;
if (rt2x00_get_field32(word, RXD_W3_L2PAD))
rxdesc->dev_flags |= RXDONE_L2PAD;
/*
* Process the RXWI structure that is at the start of the buffer.
*/
rt2800_process_rxwi(entry, rxdesc);
}
/*
* RX control handlers
*/
static void rt2800pci_fill_rxdone(struct queue_entry *entry,
struct rxdone_entry_desc *rxdesc)
{
struct queue_entry_priv_pci *entry_priv = entry->priv_data;
__le32 *rxd = entry_priv->desc;
u32 word;
rt2x00_desc_read(rxd, 3, &word);
if (rt2x00_get_field32(word, RXD_W3_CRC_ERROR))
rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
/*
* Unfortunately we don't know the cipher type used during
* decryption. This prevents us from correct providing
* correct statistics through debugfs.
*/
rxdesc->cipher_status = rt2x00_get_field32(word, RXD_W3_CIPHER_ERROR);
if (rt2x00_get_field32(word, RXD_W3_DECRYPTED)) {
/*
* Hardware has stripped IV/EIV data from 802.11 frame during
* decryption. Unfortunately the descriptor doesn't contain
* any fields with the EIV/IV data either, so they can't
* be restored by rt2x00lib.
*/
rxdesc->flags |= RX_FLAG_IV_STRIPPED;
/*
* The hardware has already checked the Michael Mic and has
* stripped it from the frame. Signal this to mac80211.
*/
rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
rxdesc->flags |= RX_FLAG_DECRYPTED;
else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
rxdesc->flags |= RX_FLAG_MMIC_ERROR;
}
if (rt2x00_get_field32(word, RXD_W3_MY_BSS))
rxdesc->dev_flags |= RXDONE_MY_BSS;
if (rt2x00_get_field32(word, RXD_W3_L2PAD))
rxdesc->dev_flags |= RXDONE_L2PAD;
/*
* Process the RXWI structure that is at the start of the buffer.
*/
rt2800_process_rxwi(entry, rxdesc);
/*
* Remove RXWI descriptor from start of buffer.
*/
skb_pull(entry->skb, RXWI_DESC_SIZE);
}
/*
* RX control handlers
*/
static void rt2800usb_fill_rxdone(struct queue_entry *entry,
struct rxdone_entry_desc *rxdesc)
{
struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
__le32 *rxi = (__le32 *)entry->skb->data;
__le32 *rxd;
u32 word;
int rx_pkt_len;
/*
* Copy descriptor to the skbdesc->desc buffer, making it safe from
* moving of frame data in rt2x00usb.
*/
memcpy(skbdesc->desc, rxi, skbdesc->desc_len);
/*
* RX frame format is :
* | RXINFO | RXWI | header | L2 pad | payload | pad | RXD | USB pad |
* |<------------ rx_pkt_len -------------->|
*/
rt2x00_desc_read(rxi, 0, &word);
rx_pkt_len = rt2x00_get_field32(word, RXINFO_W0_USB_DMA_RX_PKT_LEN);
/*
* Remove the RXINFO structure from the sbk.
*/
skb_pull(entry->skb, RXINFO_DESC_SIZE);
/*
* FIXME: we need to check for rx_pkt_len validity
*/
rxd = (__le32 *)(entry->skb->data + rx_pkt_len);
/*
* It is now safe to read the descriptor on all architectures.
*/
rt2x00_desc_read(rxd, 0, &word);
if (rt2x00_get_field32(word, RXD_W0_CRC_ERROR))
rxdesc->flags |= RX_FLAG_FAILED_FCS_CRC;
rxdesc->cipher_status = rt2x00_get_field32(word, RXD_W0_CIPHER_ERROR);
if (rt2x00_get_field32(word, RXD_W0_DECRYPTED)) {
/*
* Hardware has stripped IV/EIV data from 802.11 frame during
* decryption. Unfortunately the descriptor doesn't contain
* any fields with the EIV/IV data either, so they can't
* be restored by rt2x00lib.
*/
rxdesc->flags |= RX_FLAG_IV_STRIPPED;
/*
* The hardware has already checked the Michael Mic and has
* stripped it from the frame. Signal this to mac80211.
*/
rxdesc->flags |= RX_FLAG_MMIC_STRIPPED;
if (rxdesc->cipher_status == RX_CRYPTO_SUCCESS)
rxdesc->flags |= RX_FLAG_DECRYPTED;
else if (rxdesc->cipher_status == RX_CRYPTO_FAIL_MIC)
rxdesc->flags |= RX_FLAG_MMIC_ERROR;
}
if (rt2x00_get_field32(word, RXD_W0_MY_BSS))
rxdesc->dev_flags |= RXDONE_MY_BSS;
if (rt2x00_get_field32(word, RXD_W0_L2PAD))
rxdesc->dev_flags |= RXDONE_L2PAD;
/*
* Remove RXD descriptor from end of buffer.
*/
skb_trim(entry->skb, rx_pkt_len);
/*
* Process the RXWI structure.
*/
rt2800_process_rxwi(entry, rxdesc);
}