static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length,
bool unaligned)
{
struct wl1271_rx_descriptor *desc;
struct sk_buff *skb;
struct ieee80211_hdr *hdr;
u8 *buf;
u8 beacon = 0;
u8 is_data = 0;
u8 reserved = unaligned ? NET_IP_ALIGN : 0;
/*
* In PLT mode we seem to get frames and mac80211 warns about them,
* workaround this by not retrieving them at all.
*/
if (unlikely(wl->state == WL1271_STATE_PLT))
return -EINVAL;
/* the data read starts with the descriptor */
desc = (struct wl1271_rx_descriptor *) data;
if (desc->packet_class == WL12XX_RX_CLASS_LOGGER) {
size_t len = length - sizeof(*desc);
wl12xx_copy_fwlog(wl, data + sizeof(*desc), len);
wake_up_interruptible(&wl->fwlog_waitq);
return 0;
}
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 length not included rx descriptor */
skb = __dev_alloc_skb(length + reserved - sizeof(*desc), GFP_KERNEL);
if (!skb) {
wl1271_error("Couldn't allocate RX frame");
return -ENOMEM;
}
/* reserve the unaligned payload(if any) */
skb_reserve(skb, reserved);
buf = skb_put(skb, length - sizeof(*desc));
/*
* Copy packets from aggregation buffer to the skbs without rx
* descriptor and with packet payload aligned care. In case of unaligned
* packets copy the packets in offset of 2 bytes guarantee IP header
* payload aligned to 4 bytes.
*/
memcpy(buf, data + sizeof(*desc), length - sizeof(*desc));
hdr = (struct ieee80211_hdr *)skb->data;
if (ieee80211_is_beacon(hdr->frame_control))
beacon = 1;
if (ieee80211_is_data_present(hdr->frame_control))
is_data = 1;
wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon);
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);
skb_queue_tail(&wl->deferred_rx_queue, skb);
queue_work(wl->freezable_wq, &wl->netstack_work);
#ifdef CONFIG_HAS_WAKELOCK
/* let the frame some time to propagate to user-space */
wake_lock_timeout(&wl->rx_wake, HZ);
#endif
return is_data;
}
static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length,
bool unaligned, u8 *hlid)
{
struct wl1271_rx_descriptor *desc;
struct sk_buff *skb;
struct ieee80211_hdr *hdr;
u8 *buf;
u8 beacon = 0;
u8 is_data = 0;
u8 reserved = unaligned ? NET_IP_ALIGN : 0;
u16 seq_num;
/*
*/
if (unlikely(wl->plt))
return -EINVAL;
/* */
desc = (struct wl1271_rx_descriptor *) data;
if (desc->packet_class == WL12XX_RX_CLASS_LOGGER) {
size_t len = length - sizeof(*desc);
wl12xx_copy_fwlog(wl, data + sizeof(*desc), len);
wake_up_interruptible(&wl->fwlog_waitq);
return 0;
}
switch (desc->status & WL1271_RX_DESC_STATUS_MASK) {
/* */
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 + reserved - sizeof(*desc), GFP_KERNEL);
if (!skb) {
wl1271_error("Couldn't allocate RX frame");
return -ENOMEM;
}
/* */
skb_reserve(skb, reserved);
buf = skb_put(skb, length - sizeof(*desc));
/*
*/
memcpy(buf, data + sizeof(*desc), length - sizeof(*desc));
*hlid = desc->hlid;
hdr = (struct ieee80211_hdr *)skb->data;
if (ieee80211_is_beacon(hdr->frame_control))
beacon = 1;
if (ieee80211_is_data_present(hdr->frame_control))
is_data = 1;
wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon);
seq_num = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s seq %d hlid %d", skb,
skb->len - desc->pad_len,
beacon ? "beacon" : "",
seq_num, *hlid);
skb_trim(skb, skb->len - desc->pad_len);
skb_queue_tail(&wl->deferred_rx_queue, skb);
queue_work(wl->freezable_wq, &wl->netstack_work);
return is_data;
}
static int wl1271_rx_handle_data(struct wl1271 *wl, u8 *data, u32 length,
enum wl_rx_buf_align rx_align, u8 *hlid)
{
struct wl1271_rx_descriptor *desc;
struct sk_buff *skb;
struct ieee80211_hdr *hdr;
u8 *buf;
u8 beacon = 0;
u8 is_data = 0;
u8 reserved = 0, offset_to_data = 0;
u16 seq_num;
u32 pkt_data_len;
/*
* In PLT mode we seem to get frames and mac80211 warns about them,
* workaround this by not retrieving them at all.
*/
if (unlikely(wl->plt))
return -EINVAL;
pkt_data_len = wlcore_hw_get_rx_packet_len(wl, data, length);
if (!pkt_data_len) {
wl1271_error("Invalid packet arrived from HW. length %d",
length);
return -EINVAL;
}
if (rx_align == WLCORE_RX_BUF_UNALIGNED)
reserved = RX_BUF_ALIGN;
else if (rx_align == WLCORE_RX_BUF_PADDED)
offset_to_data = RX_BUF_ALIGN;
/* the data read starts with the descriptor */
desc = (struct wl1271_rx_descriptor *) data;
if (desc->packet_class == WL12XX_RX_CLASS_LOGGER) {
size_t len = length - sizeof(*desc);
wl12xx_copy_fwlog(wl, data + sizeof(*desc), len);
wake_up_interruptible(&wl->fwlog_waitq);
return 0;
}
/* discard corrupted packets */
if (desc->status & WL1271_RX_DESC_DECRYPT_FAIL) {
hdr = (void *)(data + sizeof(*desc) + offset_to_data);
wl1271_warning("corrupted packet in RX: status: 0x%x len: %d",
desc->status & WL1271_RX_DESC_STATUS_MASK,
pkt_data_len);
wl1271_dump((DEBUG_RX|DEBUG_CMD), "PKT: ", data + sizeof(*desc),
min(pkt_data_len,
ieee80211_hdrlen(hdr->frame_control)));
return -EINVAL;
}
/* skb length not including rx descriptor */
skb = __dev_alloc_skb(pkt_data_len + reserved, GFP_KERNEL);
if (!skb) {
wl1271_error("Couldn't allocate RX frame");
return -ENOMEM;
}
/* reserve the unaligned payload(if any) */
skb_reserve(skb, reserved);
buf = skb_put(skb, pkt_data_len);
/*
* Copy packets from aggregation buffer to the skbs without rx
* descriptor and with packet payload aligned care. In case of unaligned
* packets copy the packets in offset of 2 bytes guarantee IP header
* payload aligned to 4 bytes.
*/
memcpy(buf, data + sizeof(*desc), pkt_data_len);
if (rx_align == WLCORE_RX_BUF_PADDED)
skb_pull(skb, RX_BUF_ALIGN);
*hlid = desc->hlid;
hdr = (struct ieee80211_hdr *)skb->data;
if (ieee80211_is_beacon(hdr->frame_control))
beacon = 1;
if (ieee80211_is_data_present(hdr->frame_control))
is_data = 1;
wl1271_rx_status(wl, desc, IEEE80211_SKB_RXCB(skb), beacon);
wlcore_hw_set_rx_csum(wl, desc, skb);
seq_num = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
wl1271_debug(DEBUG_RX, "rx skb 0x%p: %d B %s seq %d hlid %d", skb,
skb->len - desc->pad_len,
beacon ? "beacon" : "",
seq_num, *hlid);
skb_queue_tail(&wl->deferred_rx_queue, skb);
queue_work(wl->freezable_wq, &wl->netstack_work);
#ifdef CONFIG_HAS_WAKELOCK
/* let the frame some time to propagate to user-space */
wake_lock_timeout(&wl->rx_wake, HZ);
#endif
return is_data;
}