return wl->system_hlid;
hdr = (struct ieee80211_hdr *)skb->data;
- if (ieee80211_is_mgmt(hdr->frame_control))
- return wlvif->ap.global_hlid;
- else
+ if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
return wlvif->ap.bcast_hlid;
+ else
+ return wlvif->ap.global_hlid;
}
}
unsigned int wlcore_calc_packet_alignment(struct wl1271 *wl,
unsigned int packet_length)
{
- if (wl->quirks & WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN)
- return ALIGN(packet_length, WL12XX_BUS_BLOCK_SIZE);
- else
+ if ((wl->quirks & WLCORE_QUIRK_TX_PAD_LAST_FRAME) ||
+ !(wl->quirks & WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN))
return ALIGN(packet_length, WL1271_TX_ALIGN_TO);
+ else
+ return ALIGN(packet_length, WL12XX_BUS_BLOCK_SIZE);
}
EXPORT_SYMBOL(wlcore_calc_packet_alignment);
static int wl1271_tx_allocate(struct wl1271 *wl, struct wl12xx_vif *wlvif,
struct sk_buff *skb, u32 extra, u32 buf_offset,
- u8 hlid)
+ u8 hlid, bool is_gem)
{
struct wl1271_tx_hw_descr *desc;
u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra;
u32 total_blocks;
int id, ret = -EBUSY, ac;
- u32 spare_blocks = wl->normal_tx_spare;
- bool is_dummy = false;
+ u32 spare_blocks;
if (buf_offset + total_len > WL1271_AGGR_BUFFER_SIZE)
return -EAGAIN;
+ spare_blocks = wlcore_hw_get_spare_blocks(wl, is_gem);
+
/* allocate free identifier for the packet */
id = wl1271_alloc_tx_id(wl, skb);
if (id < 0)
return id;
- if (unlikely(wl12xx_is_dummy_packet(wl, skb)))
- is_dummy = true;
- else if (wlvif->is_gem)
- spare_blocks = wl->gem_tx_spare;
-
total_blocks = wlcore_hw_calc_tx_blocks(wl, total_len, spare_blocks);
if (total_blocks <= wl->tx_blocks_available) {
ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb));
wl->tx_allocated_pkts[ac]++;
- if (!is_dummy && wlvif &&
+ if (!wl12xx_is_dummy_packet(wl, skb) && wlvif &&
wlvif->bss_type == BSS_TYPE_AP_BSS &&
test_bit(hlid, wlvif->ap.sta_hlid_map))
wl->links[hlid].allocated_pkts++;
if (extra) {
int hdrlen = ieee80211_hdrlen(frame_control);
memmove(frame_start, hdr, hdrlen);
+ skb_set_network_header(skb, skb_network_offset(skb) + extra);
}
/* configure packet life time */
if (is_dummy || !wlvif)
rate_idx = 0;
else if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
- /* if the packets are destined for AP (have a STA entry)
- send them with AP rate policies, otherwise use default
- basic rates */
- if (control->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
+ /*
+ * if the packets are data packets
+ * send them with AP rate policies (EAPOLs are an exception),
+ * otherwise use default basic rates
+ */
+ if (skb->protocol == cpu_to_be16(ETH_P_PAE))
+ rate_idx = wlvif->sta.basic_rate_idx;
+ else if (control->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
rate_idx = wlvif->sta.p2p_rate_idx;
- else if (control->control.sta)
+ else if (ieee80211_is_data(frame_control))
rate_idx = wlvif->sta.ap_rate_idx;
else
rate_idx = wlvif->sta.basic_rate_idx;
} else {
if (hlid == wlvif->ap.global_hlid)
rate_idx = wlvif->ap.mgmt_rate_idx;
- else if (hlid == wlvif->ap.bcast_hlid)
+ else if (hlid == wlvif->ap.bcast_hlid ||
+ skb->protocol == cpu_to_be16(ETH_P_PAE))
+ /* send AP bcast and EAPOLs using the min basic rate */
rate_idx = wlvif->ap.bcast_rate_idx;
else
rate_idx = wlvif->ap.ucast_rate_idx[ac];
ieee80211_has_protected(frame_control))
tx_attr |= TX_HW_ATTR_HOST_ENCRYPT;
- desc->reserved = 0;
desc->tx_attr = cpu_to_le16(tx_attr);
+ wlcore_hw_set_tx_desc_csum(wl, desc, skb);
wlcore_hw_set_tx_desc_data_len(wl, desc, skb);
}
u32 total_len;
u8 hlid;
bool is_dummy;
+ bool is_gem = false;
- if (!skb)
+ if (!skb) {
+ wl1271_error("discarding null skb");
return -EINVAL;
+ }
info = IEEE80211_SKB_CB(skb);
/* TODO: handle dummy packets on multi-vifs */
is_dummy = wl12xx_is_dummy_packet(wl, skb);
- if (info->control.hw_key &&
+ if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) &&
+ info->control.hw_key &&
info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP)
extra = WL1271_EXTRA_SPACE_TKIP;
return ret;
wlvif->default_key = idx;
}
+
+ is_gem = (cipher == WL1271_CIPHER_SUITE_GEM);
}
hlid = wl12xx_tx_get_hlid(wl, wlvif, skb);
if (hlid == WL12XX_INVALID_LINK_ID) {
return -EINVAL;
}
- ret = wl1271_tx_allocate(wl, wlvif, skb, extra, buf_offset, hlid);
+ ret = wl1271_tx_allocate(wl, wlvif, skb, extra, buf_offset, hlid,
+ is_gem);
if (ret < 0)
return ret;
rate_set >>= 1;
}
- /* MCS rates indication are on bits 16 - 23 */
+ /* MCS rates indication are on bits 16 - 31 */
rate_set >>= HW_HT_RATES_OFFSET - band->n_bitrates;
- for (bit = 0; bit < 8; bit++) {
+ for (bit = 0; bit < 16; bit++) {
if (rate_set & 0x1)
enabled_rates |= (CONF_HW_BIT_RATE_MCS_0 << bit);
rate_set >>= 1;
void wl1271_handle_tx_low_watermark(struct wl1271 *wl)
{
- unsigned long flags;
int i;
for (i = 0; i < NUM_TX_QUEUES; i++) {
- if (test_bit(i, &wl->stopped_queues_map) &&
+ if (wlcore_is_queue_stopped_by_reason(wl, i,
+ WLCORE_QUEUE_STOP_REASON_WATERMARK) &&
wl->tx_queue_count[i] <= WL1271_TX_QUEUE_LOW_WATERMARK) {
/* firmware buffer has space, restart queues */
- spin_lock_irqsave(&wl->wl_lock, flags);
- ieee80211_wake_queue(wl->hw,
- wl1271_tx_get_mac80211_queue(i));
- clear_bit(i, &wl->stopped_queues_map);
- spin_unlock_irqrestore(&wl->wl_lock, flags);
+ wlcore_wake_queue(wl, i,
+ WLCORE_QUEUE_STOP_REASON_WATERMARK);
}
}
}
}
}
-void wl1271_tx_work_locked(struct wl1271 *wl)
+/*
+ * Returns failure values only in case of failed bus ops within this function.
+ * wl1271_prepare_tx_frame retvals won't be returned in order to avoid
+ * triggering recovery by higher layers when not necessary.
+ * In case a FW command fails within wl1271_prepare_tx_frame fails a recovery
+ * will be queued in wl1271_cmd_send. -EAGAIN/-EBUSY from prepare_tx_frame
+ * can occur and are legitimate so don't propagate. -EINVAL will emit a WARNING
+ * within prepare_tx_frame code but there's nothing we should do about those
+ * as well.
+ */
+int wlcore_tx_work_locked(struct wl1271 *wl)
{
struct wl12xx_vif *wlvif;
struct sk_buff *skb;
struct wl1271_tx_hw_descr *desc;
- u32 buf_offset = 0;
+ u32 buf_offset = 0, last_len = 0;
bool sent_packets = false;
unsigned long active_hlids[BITS_TO_LONGS(WL12XX_MAX_LINKS)] = {0};
- int ret;
+ int ret = 0;
+ int bus_ret = 0;
if (unlikely(wl->state == WL1271_STATE_OFF))
- return;
+ return 0;
while ((skb = wl1271_skb_dequeue(wl))) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
* Flush buffer and try again.
*/
wl1271_skb_queue_head(wl, wlvif, skb);
- wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf,
- buf_offset, true);
+
+ buf_offset = wlcore_hw_pre_pkt_send(wl, buf_offset,
+ last_len);
+ bus_ret = wlcore_write_data(wl, REG_SLV_MEM_DATA,
+ wl->aggr_buf, buf_offset, true);
+ if (bus_ret < 0)
+ goto out;
+
sent_packets = true;
buf_offset = 0;
continue;
ieee80211_free_txskb(wl->hw, skb);
goto out_ack;
}
- buf_offset += ret;
+ last_len = ret;
+ buf_offset += last_len;
wl->tx_packets_count++;
if (has_data) {
desc = (struct wl1271_tx_hw_descr *) skb->data;
out_ack:
if (buf_offset) {
- wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf,
- buf_offset, true);
+ buf_offset = wlcore_hw_pre_pkt_send(wl, buf_offset, last_len);
+ bus_ret = wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf,
+ buf_offset, true);
+ if (bus_ret < 0)
+ goto out;
+
sent_packets = true;
}
if (sent_packets) {
* Interrupt the firmware with the new packets. This is only
* required for older hardware revisions
*/
- if (wl->quirks & WLCORE_QUIRK_END_OF_TRANSACTION)
- wl1271_write32(wl, WL12XX_HOST_WR_ACCESS,
- wl->tx_packets_count);
+ if (wl->quirks & WLCORE_QUIRK_END_OF_TRANSACTION) {
+ bus_ret = wlcore_write32(wl, WL12XX_HOST_WR_ACCESS,
+ wl->tx_packets_count);
+ if (bus_ret < 0)
+ goto out;
+ }
wl1271_handle_tx_low_watermark(wl);
}
wl12xx_rearm_rx_streaming(wl, active_hlids);
+
+out:
+ return bus_ret;
}
void wl1271_tx_work(struct work_struct *work)
if (ret < 0)
goto out;
- wl1271_tx_work_locked(wl);
+ ret = wlcore_tx_work_locked(wl);
+ if (ret < 0) {
+ wl12xx_queue_recovery_work(wl);
+ goto out;
+ }
wl1271_ps_elp_sleep(wl);
out:
skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
/* remove TKIP header space if present */
- if (info->control.hw_key &&
+ if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) &&
+ info->control.hw_key &&
info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) {
int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, skb->data,
}
/* Called upon reception of a TX complete interrupt */
-void wl1271_tx_complete(struct wl1271 *wl)
+int wlcore_tx_complete(struct wl1271 *wl)
{
- struct wl1271_acx_mem_map *memmap =
- (struct wl1271_acx_mem_map *)wl->target_mem_map;
+ struct wl1271_acx_mem_map *memmap = wl->target_mem_map;
u32 count, fw_counter;
u32 i;
+ int ret;
/* read the tx results from the chipset */
- wl1271_read(wl, le32_to_cpu(memmap->tx_result),
- wl->tx_res_if, sizeof(*wl->tx_res_if), false);
+ ret = wlcore_read(wl, le32_to_cpu(memmap->tx_result),
+ wl->tx_res_if, sizeof(*wl->tx_res_if), false);
+ if (ret < 0)
+ goto out;
+
fw_counter = le32_to_cpu(wl->tx_res_if->tx_result_fw_counter);
/* write host counter to chipset (to ack) */
- wl1271_write32(wl, le32_to_cpu(memmap->tx_result) +
- offsetof(struct wl1271_tx_hw_res_if,
- tx_result_host_counter), fw_counter);
+ ret = wlcore_write32(wl, le32_to_cpu(memmap->tx_result) +
+ offsetof(struct wl1271_tx_hw_res_if,
+ tx_result_host_counter), fw_counter);
+ if (ret < 0)
+ goto out;
count = fw_counter - wl->tx_results_count;
wl1271_debug(DEBUG_TX, "tx_complete received, packets: %d", count);
wl->tx_results_count++;
}
+
+out:
+ return ret;
}
-EXPORT_SYMBOL(wl1271_tx_complete);
+EXPORT_SYMBOL(wlcore_tx_complete);
void wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid)
{
}
/* caller must hold wl->mutex and TX must be stopped */
-void wl12xx_tx_reset(struct wl1271 *wl, bool reset_tx_queues)
+void wl12xx_tx_reset(struct wl1271 *wl)
{
int i;
struct sk_buff *skb;
wl->tx_queue_count[i] = 0;
}
- wl->stopped_queues_map = 0;
-
/*
* Make sure the driver is at a consistent state, in case this
* function is called from a context other than interface removal.
* This call will always wake the TX queues.
*/
- if (reset_tx_queues)
- wl1271_handle_tx_low_watermark(wl);
+ wl1271_handle_tx_low_watermark(wl);
for (i = 0; i < wl->num_tx_desc; i++) {
if (wl->tx_frames[i] == NULL)
*/
info = IEEE80211_SKB_CB(skb);
skb_pull(skb, sizeof(struct wl1271_tx_hw_descr));
- if (info->control.hw_key &&
+ if ((wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE) &&
+ info->control.hw_key &&
info->control.hw_key->cipher ==
WLAN_CIPHER_SUITE_TKIP) {
int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
int i;
timeout = jiffies + usecs_to_jiffies(WL1271_TX_FLUSH_TIMEOUT);
+ /* only one flush should be in progress, for consistent queue state */
+ mutex_lock(&wl->flush_mutex);
+
+ wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_FLUSH);
+
while (!time_after(jiffies, timeout)) {
mutex_lock(&wl->mutex);
wl1271_debug(DEBUG_TX, "flushing tx buffer: %d %d",
if ((wl->tx_frames_cnt == 0) &&
(wl1271_tx_total_queue_count(wl) == 0)) {
mutex_unlock(&wl->mutex);
- return;
+ goto out;
}
mutex_unlock(&wl->mutex);
msleep(1);
for (i = 0; i < WL12XX_MAX_LINKS; i++)
wl1271_tx_reset_link_queues(wl, i);
mutex_unlock(&wl->mutex);
+
+out:
+ wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_FLUSH);
+ mutex_unlock(&wl->flush_mutex);
}
+EXPORT_SYMBOL_GPL(wl1271_tx_flush);
u32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set)
{
return BIT(__ffs(rate_set));
}
+
+void wlcore_stop_queue_locked(struct wl1271 *wl, u8 queue,
+ enum wlcore_queue_stop_reason reason)
+{
+ bool stopped = !!wl->queue_stop_reasons[queue];
+
+ /* queue should not be stopped for this reason */
+ WARN_ON(test_and_set_bit(reason, &wl->queue_stop_reasons[queue]));
+
+ if (stopped)
+ return;
+
+ ieee80211_stop_queue(wl->hw, wl1271_tx_get_mac80211_queue(queue));
+}
+
+void wlcore_stop_queue(struct wl1271 *wl, u8 queue,
+ enum wlcore_queue_stop_reason reason)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ wlcore_stop_queue_locked(wl, queue, reason);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+}
+
+void wlcore_wake_queue(struct wl1271 *wl, u8 queue,
+ enum wlcore_queue_stop_reason reason)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&wl->wl_lock, flags);
+
+ /* queue should not be clear for this reason */
+ WARN_ON(!test_and_clear_bit(reason, &wl->queue_stop_reasons[queue]));
+
+ if (wl->queue_stop_reasons[queue])
+ goto out;
+
+ ieee80211_wake_queue(wl->hw, wl1271_tx_get_mac80211_queue(queue));
+
+out:
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+}
+
+void wlcore_stop_queues(struct wl1271 *wl,
+ enum wlcore_queue_stop_reason reason)
+{
+ int i;
+
+ for (i = 0; i < NUM_TX_QUEUES; i++)
+ wlcore_stop_queue(wl, i, reason);
+}
+EXPORT_SYMBOL_GPL(wlcore_stop_queues);
+
+void wlcore_wake_queues(struct wl1271 *wl,
+ enum wlcore_queue_stop_reason reason)
+{
+ int i;
+
+ for (i = 0; i < NUM_TX_QUEUES; i++)
+ wlcore_wake_queue(wl, i, reason);
+}
+EXPORT_SYMBOL_GPL(wlcore_wake_queues);
+
+void wlcore_reset_stopped_queues(struct wl1271 *wl)
+{
+ int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&wl->wl_lock, flags);
+
+ for (i = 0; i < NUM_TX_QUEUES; i++) {
+ if (!wl->queue_stop_reasons[i])
+ continue;
+
+ wl->queue_stop_reasons[i] = 0;
+ ieee80211_wake_queue(wl->hw,
+ wl1271_tx_get_mac80211_queue(i));
+ }
+
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
+}
+
+bool wlcore_is_queue_stopped_by_reason(struct wl1271 *wl, u8 queue,
+ enum wlcore_queue_stop_reason reason)
+{
+ return test_bit(reason, &wl->queue_stop_reasons[queue]);
+}
+
+bool wlcore_is_queue_stopped(struct wl1271 *wl, u8 queue)
+{
+ return !!wl->queue_stop_reasons[queue];
+}
projects / ~andy / linux / blobdiff