@@ -61,6 +61,11 @@ struct ath10k_skb_cb {
u8 frag_len;
u8 pad_len;
} __packed htt;
+
+ struct {
+ bool dtim_zero;
+ bool deliver_cab;
+ } bcn;
} __packed;
static inline struct ath10k_skb_cb *ATH10K_SKB_CB(struct sk_buff *skb)
@@ -222,6 +227,7 @@ struct ath10k_vif {
u32 beacon_interval;
u32 dtim_period;
struct sk_buff *beacon;
+ bool beacon_sent;
struct ath10k *ar;
struct ieee80211_vif *vif;
@@ -782,6 +782,17 @@ static void ath10k_control_beaconing(struct ath10k_vif *arvif,
if (!info->enable_beacon) {
ath10k_vdev_stop(arvif);
+
+ spin_lock_bh(&arvif->ar->data_lock);
+ if (arvif->beacon) {
+ ath10k_skb_unmap(arvif->ar->dev, arvif->beacon);
+ dev_kfree_skb_any(arvif->beacon);
+
+ arvif->beacon = NULL;
+ arvif->beacon_sent = false;
+ }
+ spin_unlock_bh(&arvif->ar->data_lock);
+
return;
}
@@ -560,7 +560,6 @@ err_pull:
static void ath10k_wmi_tx_beacon_nowait(struct ath10k_vif *arvif)
{
- struct wmi_bcn_tx_arg arg = {0};
int ret;
lockdep_assert_held(&arvif->ar->data_lock);
@@ -568,18 +567,18 @@ static void ath10k_wmi_tx_beacon_nowait(struct ath10k_vif *arvif)
if (arvif->beacon == NULL)
return;
- arg.vdev_id = arvif->vdev_id;
- arg.tx_rate = 0;
- arg.tx_power = 0;
- arg.bcn = arvif->beacon->data;
- arg.bcn_len = arvif->beacon->len;
+ if (arvif->beacon_sent)
+ return;
- ret = ath10k_wmi_beacon_send_nowait(arvif->ar, &arg);
+ ret = ath10k_wmi_beacon_send_ref_nowait(arvif->ar,
+ arvif->vdev_id,
+ arvif->beacon);
if (ret)
return;
- dev_kfree_skb_any(arvif->beacon);
- arvif->beacon = NULL;
+ /* We need to retain the arvif->beacon reference for DMA unmapping and
+ * freeing the skbuff later. */
+ arvif->beacon_sent = true;
}
static void ath10k_wmi_tx_beacons_iter(void *data, u8 *mac,
@@ -1211,6 +1210,13 @@ static void ath10k_wmi_update_tim(struct ath10k *ar,
tim->bitmap_ctrl = !!__le32_to_cpu(bcn_info->tim_info.tim_mcast);
memcpy(tim->virtual_map, arvif->u.ap.tim_bitmap, pvm_len);
+ if (tim->dtim_count == 0) {
+ ATH10K_SKB_CB(bcn)->bcn.dtim_zero = true;
+
+ if (__le32_to_cpu(bcn_info->tim_info.tim_mcast) == 1)
+ ATH10K_SKB_CB(bcn)->bcn.deliver_cab = true;
+ }
+
ath10k_dbg(ATH10K_DBG_MGMT, "dtim %d/%d mcast %d pvmlen %d\n",
tim->dtim_count, tim->dtim_period,
tim->bitmap_ctrl, pvm_len);
@@ -1390,13 +1396,20 @@ static void ath10k_wmi_event_host_swba(struct ath10k *ar, struct sk_buff *skb)
ath10k_wmi_update_noa(ar, arvif, bcn, bcn_info);
spin_lock_bh(&ar->data_lock);
+
if (arvif->beacon) {
- ath10k_warn("SWBA overrun on vdev %d\n",
- arvif->vdev_id);
+ if (!arvif->beacon_sent)
+ ath10k_warn("SWBA overrun on vdev %d\n",
+ arvif->vdev_id);
+
+ ath10k_skb_unmap(ar->dev, arvif->beacon);
dev_kfree_skb_any(arvif->beacon);
}
+ ath10k_skb_map(ar->dev, bcn);
+
arvif->beacon = bcn;
+ arvif->beacon_sent = false;
ath10k_wmi_tx_beacon_nowait(arvif);
spin_unlock_bh(&ar->data_lock);
@@ -3377,25 +3390,40 @@ int ath10k_wmi_peer_assoc(struct ath10k *ar,
return ath10k_wmi_cmd_send(ar, skb, ar->wmi.cmd->peer_assoc_cmdid);
}
-int ath10k_wmi_beacon_send_nowait(struct ath10k *ar,
- const struct wmi_bcn_tx_arg *arg)
+/* This function assumes the beacon is already DMA mapped */
+int ath10k_wmi_beacon_send_ref_nowait(struct ath10k *ar, u32 vdev_id,
+ struct sk_buff *beacon)
{
- struct wmi_bcn_tx_cmd *cmd;
+ struct wmi_bcn_tx_ref_cmd *cmd;
struct sk_buff *skb;
int ret;
+ struct ieee80211_hdr *hdr;
+ u16 fc;
- skb = ath10k_wmi_alloc_skb(sizeof(*cmd) + arg->bcn_len);
+ skb = ath10k_wmi_alloc_skb(sizeof(*cmd));
if (!skb)
return -ENOMEM;
- cmd = (struct wmi_bcn_tx_cmd *)skb->data;
- cmd->hdr.vdev_id = __cpu_to_le32(arg->vdev_id);
- cmd->hdr.tx_rate = __cpu_to_le32(arg->tx_rate);
- cmd->hdr.tx_power = __cpu_to_le32(arg->tx_power);
- cmd->hdr.bcn_len = __cpu_to_le32(arg->bcn_len);
- memcpy(cmd->bcn, arg->bcn, arg->bcn_len);
+ hdr = (struct ieee80211_hdr *)beacon->data;
+ fc = le16_to_cpu(hdr->frame_control);
+
+ cmd = (struct wmi_bcn_tx_ref_cmd *)skb->data;
+ cmd->vdev_id = __cpu_to_le32(vdev_id);
+ cmd->data_len = __cpu_to_le32(beacon->len);
+ cmd->data_ptr = __cpu_to_le32(ATH10K_SKB_CB(beacon)->paddr);
+ cmd->msdu_id = 0;
+ cmd->frame_control = __cpu_to_le32(fc);
+ cmd->flags = 0;
+
+ if (ATH10K_SKB_CB(beacon)->bcn.dtim_zero)
+ cmd->flags |= __cpu_to_le32(WMI_BCN_TX_REF_FLAG_DTIM_ZERO);
+
+ if (ATH10K_SKB_CB(beacon)->bcn.deliver_cab)
+ cmd->flags |= __cpu_to_le32(WMI_BCN_TX_REF_FLAG_DELIVER_CAB);
+
+ ret = ath10k_wmi_cmd_send_nowait(ar, skb,
+ ar->wmi.cmd->pdev_send_bcn_cmdid);
- ret = ath10k_wmi_cmd_send_nowait(ar, skb, ar->wmi.cmd->bcn_tx_cmdid);
if (ret)
dev_kfree_skb(skb);
@@ -3391,6 +3391,20 @@ struct wmi_bcn_tx_arg {
const void *bcn;
};
+enum wmi_bcn_tx_ref_flags {
+ WMI_BCN_TX_REF_FLAG_DTIM_ZERO = 0x1,
+ WMI_BCN_TX_REF_FLAG_DELIVER_CAB = 0x2,
+};
+
+struct wmi_bcn_tx_ref_cmd {
+ __le32 vdev_id;
+ __le32 data_len;
+ __le32 data_ptr; /* dma pointer */
+ __le32 msdu_id; /* id for host to track */
+ __le32 frame_control;
+ __le32 flags; /* WMI_BCN_TX_REF_FLAG_ */
+} __packed;
+
/* Beacon filter */
#define WMI_BCN_FILTER_ALL 0 /* Filter all beacons */
#define WMI_BCN_FILTER_NONE 1 /* Pass all beacons */
@@ -4167,5 +4181,7 @@ int ath10k_wmi_request_stats(struct ath10k *ar, enum wmi_stats_id stats_id);
int ath10k_wmi_force_fw_hang(struct ath10k *ar,
enum wmi_force_fw_hang_type type, u32 delay_ms);
int ath10k_wmi_mgmt_tx(struct ath10k *ar, struct sk_buff *skb);
+int ath10k_wmi_beacon_send_ref_nowait(struct ath10k *ar, u32 vdev_id,
+ struct sk_buff *beacon);
#endif /* _WMI_H_ */