int id, ret = -EBUSY;
if (buf_offset + total_len > WL1271_AGGR_BUFFER_SIZE)
- return -EBUSY;
+ return -EAGAIN;
/* allocate free identifier for the packet */
id = wl1271_tx_id(wl, skb);
struct sk_buff *skb;
bool woken_up = false;
u32 sta_rates = 0;
- u32 buf_offset;
+ u32 buf_offset = 0;
+ bool sent_packets = false;
int ret;
/* check if the rates supported by the AP have changed */
wl1271_acx_rate_policies(wl);
}
- /* Prepare the transfer buffer, by aggregating all
- * available packets */
- buf_offset = 0;
while ((skb = skb_dequeue(&wl->tx_queue))) {
if (!woken_up) {
ret = wl1271_ps_elp_wakeup(wl, false);
}
ret = wl1271_prepare_tx_frame(wl, skb, buf_offset);
- if (ret == -EBUSY) {
+ if (ret == -EAGAIN) {
/*
- * Either the firmware buffer is full, or the
- * aggregation buffer is.
+ * Aggregation buffer is full.
+ * Flush buffer and try again.
+ */
+ skb_queue_head(&wl->tx_queue, skb);
+ wl1271_write(wl, WL1271_SLV_MEM_DATA, wl->aggr_buf,
+ buf_offset, true);
+ sent_packets = true;
+ buf_offset = 0;
+ continue;
+ } else if (ret == -EBUSY) {
+ /*
+ * Firmware buffer is full.
* Queue back last skb, and stop aggregating.
*/
skb_queue_head(&wl->tx_queue, skb);
if (buf_offset) {
wl1271_write(wl, WL1271_SLV_MEM_DATA, wl->aggr_buf,
buf_offset, true);
+ sent_packets = true;
+ }
+ if (sent_packets) {
/* interrupt the firmware with the new packets */
wl1271_write32(wl, WL1271_HOST_WR_ACCESS, wl->tx_packets_count);
}