Filtering the rx frames in firmware after connection in station mode
avoids the overhead of processing un-necessary frames. Hence rx filter
frame is added which can be configured to device at suitable times.
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@xxxxxxxxx>
---
drivers/net/wireless/rsi/rsi_91x_mac80211.c | 22 ++++++++++++++++++++
drivers/net/wireless/rsi/rsi_91x_mgmt.c | 32 +++++++++++++++++++++++++++++
drivers/net/wireless/rsi/rsi_mgmt.h | 11 ++++++++++
3 files changed, 65 insertions(+)
diff --git a/drivers/net/wireless/rsi/rsi_91x_mac80211.c b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
index dbb2389..fa9498d 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
@@ -259,11 +259,14 @@ static int rsi_mac80211_start(struct ieee80211_hw *hw)
{
struct rsi_hw *adapter = hw->priv;
struct rsi_common *common = adapter->priv;
+ u16 rx_filter_word = 0;
mutex_lock(&common->mutex);
common->iface_down = false;
mutex_unlock(&common->mutex);
+ rsi_send_rx_filter_frame(common, rx_filter_word);
+
return 0;
}
@@ -456,11 +459,28 @@ static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
{
struct rsi_hw *adapter = hw->priv;
struct rsi_common *common = adapter->priv;
+ struct ieee80211_bss_conf *bss = &adapter->vifs[0]->bss_conf;
+ u16 rx_filter_word = 0;
mutex_lock(&common->mutex);
if (changed & BSS_CHANGED_ASSOC) {
rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
__func__, bss_conf->assoc);
+ bss->assoc = bss_conf->assoc;
+ if (bss_conf->assoc) {
+ /* Send the RX filter frame */
+ rx_filter_word = (ALLOW_DATA_ASSOC_PEER |
+ ALLOW_CTRL_ASSOC_PEER |
+ ALLOW_MGMT_ASSOC_PEER);
+ rsi_send_rx_filter_frame(common, rx_filter_word);
+ }
+ rsi_dbg(INFO_ZONE,
+ "assoc_status=%d, qos=%d, aid=%d\n",
+ bss->assoc, bss->qos, bss->aid);
+ rsi_dbg(INFO_ZONE,
+ "bssid=%02x:%02x:%02x:%02x:%02x:%02x",
+ bss->bssid[0], bss->bssid[1], bss->bssid[2],
+ bss->bssid[3], bss->bssid[4], bss->bssid[5]);
rsi_inform_bss_status(common,
bss_conf->assoc,
bss_conf->bssid,
@@ -1009,6 +1029,8 @@ static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
common->secinfo.gtk_cipher = 0;
mutex_unlock(&common->mutex);
+ if (!common->iface_down)
+ rsi_send_rx_filter_frame(common, 0);
return 0;
}
diff --git a/drivers/net/wireless/rsi/rsi_91x_mgmt.c b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
index 8db377b..ae4a814 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mgmt.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mgmt.c
@@ -1254,6 +1254,38 @@ int rsi_send_block_unblock_frame(struct rsi_common *common, bool block_event)
}
+/**
+ * This function sends a frame to filter the RX packets
+ *
+ * @param common Pointer to the driver private structure.
+ * @param rx_filter_word - Flags of filter packets
+ * @return 0 on success, -1 on failure.
+ */
+int rsi_send_rx_filter_frame(struct rsi_common *common, u16 rx_filter_word)
+{
+ struct rsi_mac_frame *mgmt_frame;
+ struct sk_buff *skb;
+
+ rsi_dbg(MGMT_TX_ZONE, "%s: Sending RX filter frame\n", __func__);
+
+ skb = dev_alloc_skb(FRAME_DESC_SZ);
+ if (!skb) {
+ rsi_dbg(ERR_ZONE, "%s: Failed in allocation of skb\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ memset(skb->data, 0, FRAME_DESC_SZ);
+ mgmt_frame = (struct rsi_mac_frame *)skb->data;
+
+ mgmt_frame->desc_word[0] = cpu_to_le16(RSI_WIFI_MGMT_Q << 12);
+ mgmt_frame->desc_word[1] = cpu_to_le16(SET_RX_FILTER);
+ mgmt_frame->desc_word[4] = cpu_to_le16(rx_filter_word);
+
+ skb_put(skb, FRAME_DESC_SZ);
+
+ return rsi_send_internal_mgmt_frame(common, skb);
+}
/**
* rsi_handle_ta_confirm_type() - This function handles the confirm frames.
diff --git a/drivers/net/wireless/rsi/rsi_mgmt.h b/drivers/net/wireless/rsi/rsi_mgmt.h
index 3741173..40e8f8e 100644
--- a/drivers/net/wireless/rsi/rsi_mgmt.h
+++ b/drivers/net/wireless/rsi/rsi_mgmt.h
@@ -140,6 +140,16 @@
#define RSI_SUPP_FILTERS (FIF_ALLMULTI | FIF_PROBE_REQ |\
FIF_BCN_PRBRESP_PROMISC)
+
+/* Rx filter word definitions */
+#define PROMISCOUS_MODE BIT(0)
+#define ALLOW_DATA_ASSOC_PEER BIT(1)
+#define ALLOW_MGMT_ASSOC_PEER BIT(2)
+#define ALLOW_CTRL_ASSOC_PEER BIT(3)
+#define DISALLOW_BEACONS BIT(4)
+#define ALLOW_CONN_PEER_MGMT_WHILE_BUF_FULL BIT(5)
+#define DISALLOW_BROADCAST_DATA BIT(6)
+
enum opmode {
STA_OPMODE = 1,
AP_OPMODE = 2
@@ -306,4 +316,5 @@ void rsi_core_xmit(struct rsi_common *common, struct sk_buff *skb);
int rsi_send_mgmt_pkt(struct rsi_common *common, struct sk_buff *skb);
int rsi_send_data_pkt(struct rsi_common *common, struct sk_buff *skb);
int rsi_band_check(struct rsi_common *common);
+int rsi_send_rx_filter_frame(struct rsi_common *common, u16 rx_filter_word);
#endif
--
2.4.11
