diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/rx.c')
-rw-r--r-- | drivers/net/wireless/wl12xx/rx.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/drivers/net/wireless/wl12xx/rx.c b/drivers/net/wireless/wl12xx/rx.c index 2a581495d5c..70091035e01 100644 --- a/drivers/net/wireless/wl12xx/rx.c +++ b/drivers/net/wireless/wl12xx/rx.c @@ -76,12 +76,15 @@ static void wl1271_rx_status(struct wl1271 *wl, status->band); if (desc->flags & WL1271_RX_DESC_ENCRYPT_MASK) { - status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED; + u8 desc_err_code = desc->status & WL1271_RX_DESC_STATUS_MASK; - if (likely(!(desc->status & WL1271_RX_DESC_DECRYPT_FAIL))) - status->flag |= RX_FLAG_DECRYPTED; - if (unlikely(desc->status & WL1271_RX_DESC_MIC_FAIL)) + status->flag |= RX_FLAG_IV_STRIPPED | RX_FLAG_MMIC_STRIPPED | + RX_FLAG_DECRYPTED; + + if (unlikely(desc_err_code == WL1271_RX_DESC_MIC_FAIL)) { status->flag |= RX_FLAG_MMIC_ERROR; + wl1271_warning("Michael MIC error"); + } } } @@ -100,6 +103,25 @@ static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length) if (unlikely(wl->state == WL1271_STATE_PLT)) return -EINVAL; + /* the data read starts with the descriptor */ + desc = (struct wl1271_rx_descriptor *) data; + + switch (desc->status & WL1271_RX_DESC_STATUS_MASK) { + /* discard corrupted packets */ + case WL1271_RX_DESC_DRIVER_RX_Q_FAIL: + case WL1271_RX_DESC_DECRYPT_FAIL: + wl1271_warning("corrupted packet in RX with status: 0x%x", + desc->status & WL1271_RX_DESC_STATUS_MASK); + return -EINVAL; + case WL1271_RX_DESC_SUCCESS: + case WL1271_RX_DESC_MIC_FAIL: + break; + default: + wl1271_error("invalid RX descriptor status: 0x%x", + desc->status & WL1271_RX_DESC_STATUS_MASK); + return -EINVAL; + } + skb = __dev_alloc_skb(length, GFP_KERNEL); if (!skb) { wl1271_error("Couldn't allocate RX frame"); @@ -109,9 +131,6 @@ static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length) buf = skb_put(skb, length); memcpy(buf, data, length); - /* the data read starts with the descriptor */ - desc = (struct wl1271_rx_descriptor *) buf; - /* now we pull the descriptor out of the buffer */ skb_pull(skb, sizeof(*desc)); @@ -121,7 +140,8 @@ static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length) wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon); - wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s", skb, skb->len, + wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s", skb, + skb->len - desc->pad_len, beacon ? "beacon" : ""); skb_trim(skb, skb->len - desc->pad_len); |