mwifiex: implement remain_on_channel and cancel_remain_on_channel

Add a new command to implement remain_on_channel and
cancel_remain_on_channel.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index f86043d..261d7c5 100644 (file)
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -77,8 +77,7 @@ static const struct ieee80211_regdomain mwifiex_world_regdom_custom = {
  *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
  *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
  */
-static u8
-mwifiex_chan_type_to_sec_chan_offset(enum nl80211_channel_type chan_type)
+u8 mwifiex_chan_type_to_sec_chan_offset(enum nl80211_channel_type chan_type)
 {
        switch (chan_type) {
        case NL80211_CHAN_NO_HT:
@@ -248,6 +247,79 @@ mwifiex_cfg80211_mgmt_frame_register(struct wiphy *wiphy,
 }
 
 /*
+ * CFG802.11 operation handler to remain on channel.
+ */
+static int
+mwifiex_cfg80211_remain_on_channel(struct wiphy *wiphy,
+                                  struct wireless_dev *wdev,
+                                  struct ieee80211_channel *chan,
+                                  enum nl80211_channel_type channel_type,
+                                  unsigned int duration, u64 *cookie)
+{
+       struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
+       int ret;
+
+       if (!chan || !cookie) {
+               wiphy_err(wiphy, "Invalid parameter for ROC\n");
+               return -EINVAL;
+       }
+
+       if (priv->roc_cfg.cookie) {
+               wiphy_dbg(wiphy, "info: ongoing ROC, cookie = 0x%llu\n",
+                         priv->roc_cfg.cookie);
+               return -EBUSY;
+       }
+
+       ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_SET, chan,
+                                        &channel_type, duration);
+
+       if (!ret) {
+               *cookie = random32() | 1;
+               priv->roc_cfg.cookie = *cookie;
+               priv->roc_cfg.chan = *chan;
+               priv->roc_cfg.chan_type = channel_type;
+
+               cfg80211_ready_on_channel(wdev, *cookie, chan, channel_type,
+                                         duration, GFP_ATOMIC);
+
+               wiphy_dbg(wiphy, "info: ROC, cookie = 0x%llx\n", *cookie);
+       }
+
+       return ret;
+}
+
+/*
+ * CFG802.11 operation handler to cancel remain on channel.
+ */
+static int
+mwifiex_cfg80211_cancel_remain_on_channel(struct wiphy *wiphy,
+                                         struct wireless_dev *wdev, u64 cookie)
+{
+       struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
+       int ret;
+
+       if (cookie != priv->roc_cfg.cookie)
+               return -ENOENT;
+
+       ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_REMOVE,
+                                        &priv->roc_cfg.chan,
+                                        &priv->roc_cfg.chan_type, 0);
+
+       if (!ret) {
+               cfg80211_remain_on_channel_expired(wdev, cookie,
+                                                  &priv->roc_cfg.chan,
+                                                  priv->roc_cfg.chan_type,
+                                                  GFP_ATOMIC);
+
+               memset(&priv->roc_cfg, 0, sizeof(struct mwifiex_roc_cfg));
+
+               wiphy_dbg(wiphy, "info: cancel ROC, cookie = 0x%llx\n", cookie);
+       }
+
+       return ret;
+}
+
+/*
  * CFG802.11 operation handler to set Tx power.
  */
 static int
@@ -1950,6 +2022,8 @@ static struct cfg80211_ops mwifiex_cfg80211_ops = {
        .del_key = mwifiex_cfg80211_del_key,
        .mgmt_tx = mwifiex_cfg80211_mgmt_tx,
        .mgmt_frame_register = mwifiex_cfg80211_mgmt_frame_register,
+       .remain_on_channel = mwifiex_cfg80211_remain_on_channel,
+       .cancel_remain_on_channel = mwifiex_cfg80211_cancel_remain_on_channel,
        .set_default_key = mwifiex_cfg80211_set_default_key,
        .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
        .set_tx_power = mwifiex_cfg80211_set_tx_power,
@@ -1987,6 +2061,7 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
        wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
        wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
        wiphy->mgmt_stypes = mwifiex_mgmt_stypes;
+       wiphy->max_remain_on_channel_duration = 5000;
        wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
                                 BIT(NL80211_IFTYPE_ADHOC) |
                                 BIT(NL80211_IFTYPE_AP);
@@ -2008,7 +2083,8 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
        wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
        wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
                        WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
-                       WIPHY_FLAG_CUSTOM_REGULATORY;
+                       WIPHY_FLAG_CUSTOM_REGULATORY |
+                       WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
 
        wiphy_apply_custom_regulatory(wiphy, &mwifiex_world_regdom_custom);
 

diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h
index b587ea3..9818cae 100644 (file)
--- a/drivers/net/wireless/mwifiex/fw.h
+++ b/drivers/net/wireless/mwifiex/fw.h
@@ -265,6 +265,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define HostCmd_CMD_SET_BSS_MODE                      0x00f7
 #define HostCmd_CMD_PCIE_DESC_DETAILS                 0x00fa
 #define HostCmd_CMD_MGMT_FRAME_REG                    0x010c
+#define HostCmd_CMD_REMAIN_ON_CHAN                    0x010d
 
 #define PROTOCOL_NO_SECURITY        0x01
 #define PROTOCOL_STATIC_WEP         0x02
@@ -293,6 +294,7 @@ enum ENH_PS_MODES {
 #define HostCmd_RET_BIT                       0x8000
 #define HostCmd_ACT_GEN_GET                   0x0000
 #define HostCmd_ACT_GEN_SET                   0x0001
+#define HostCmd_ACT_GEN_REMOVE                0x0004
 #define HostCmd_ACT_BITWISE_SET               0x0002
 #define HostCmd_ACT_BITWISE_CLR               0x0003
 #define HostCmd_RESULT_OK                     0x0000
@@ -1343,6 +1345,15 @@ struct host_cmd_ds_mgmt_frame_reg {
        __le32 mask;
 } __packed;
 
+struct host_cmd_ds_remain_on_chan {
+       __le16 action;
+       u8 status;
+       u8 reserved;
+       u8 band_cfg;
+       u8 channel;
+       __le32 duration;
+} __packed;
+
 struct host_cmd_ds_802_11_ibss_status {
        __le16 action;
        __le16 enable;
@@ -1452,6 +1463,7 @@ struct host_cmd_ds_command {
                struct host_cmd_ds_802_11_key_material key_material;
                struct host_cmd_ds_version_ext verext;
                struct host_cmd_ds_mgmt_frame_reg reg_mask;
+               struct host_cmd_ds_remain_on_chan roc_cfg;
                struct host_cmd_ds_802_11_ibss_status ibss_coalescing;
                struct host_cmd_ds_mac_reg_access mac_reg;
                struct host_cmd_ds_bbp_reg_access bbp_reg;

diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index 105a5c5..fa96dc3 100644 (file)
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -214,7 +214,7 @@ static int mwifiex_init_priv(struct mwifiex_private *priv)
        priv->wps_ie = NULL;
        priv->wps_ie_len = 0;
        priv->ap_11n_enabled = 0;
-       priv->mgmt_rx_freq = 2437;
+       memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
 
        priv->scan_block = false;
 

diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index ec5794e..89ba66e 100644 (file)
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -370,6 +370,12 @@ struct wps {
        u8 session_enable;
 };
 
+struct mwifiex_roc_cfg {
+       u64 cookie;
+       struct ieee80211_channel chan;
+       enum nl80211_channel_type chan_type;
+};
+
 struct mwifiex_adapter;
 struct mwifiex_private;
 
@@ -497,7 +503,7 @@ struct mwifiex_private {
        struct timer_list scan_delay_timer;
        u8 ap_11n_enabled;
        u32 mgmt_frame_mask;
-       u32 mgmt_rx_freq;
+       struct mwifiex_roc_cfg roc_cfg;
 };
 
 enum mwifiex_ba_status {
@@ -1007,6 +1013,11 @@ int mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len);
 
 int mwifiex_get_ver_ext(struct mwifiex_private *priv);
 
+int mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
+                              struct ieee80211_channel *chan,
+                              enum nl80211_channel_type *channel_type,
+                              unsigned int duration);
+
 int mwifiex_get_stats_info(struct mwifiex_private *priv,
                           struct mwifiex_ds_get_stats *log);
 
@@ -1049,6 +1060,8 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
 int mwifiex_check_network_compatibility(struct mwifiex_private *priv,
                                        struct mwifiex_bssdescriptor *bss_desc);
 
+u8 mwifiex_chan_type_to_sec_chan_offset(enum nl80211_channel_type chan_type);
+
 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
                                              const char *name,
                                              enum nl80211_iftype type,

diff --git a/drivers/net/wireless/mwifiex/sta_cmd.c b/drivers/net/wireless/mwifiex/sta_cmd.c
index dc4fe8c..0252446 100644 (file)
--- a/drivers/net/wireless/mwifiex/sta_cmd.c
+++ b/drivers/net/wireless/mwifiex/sta_cmd.c
@@ -1176,6 +1176,14 @@ int mwifiex_sta_prepare_cmd(struct mwifiex_private *priv, uint16_t cmd_no,
                                    S_DS_GEN);
                ret = 0;
                break;
+       case HostCmd_CMD_REMAIN_ON_CHAN:
+               cmd_ptr->command = cpu_to_le16(cmd_no);
+               memcpy(&cmd_ptr->params, data_buf,
+                      sizeof(struct host_cmd_ds_remain_on_chan));
+               cmd_ptr->size =
+                     cpu_to_le16(sizeof(struct host_cmd_ds_remain_on_chan) +
+                                 S_DS_GEN);
+               break;
        case HostCmd_CMD_FUNC_INIT:
                if (priv->adapter->hw_status == MWIFIEX_HW_STATUS_RESET)
                        priv->adapter->hw_status = MWIFIEX_HW_STATUS_READY;

diff --git a/drivers/net/wireless/mwifiex/sta_cmdresp.c b/drivers/net/wireless/mwifiex/sta_cmdresp.c
index d1f53e3..621d36e 100644 (file)
--- a/drivers/net/wireless/mwifiex/sta_cmdresp.c
+++ b/drivers/net/wireless/mwifiex/sta_cmdresp.c
@@ -654,6 +654,22 @@ static int mwifiex_ret_ver_ext(struct mwifiex_private *priv,
 }
 
 /*
+ * This function handles the command response of remain on channel.
+ */
+static int
+mwifiex_ret_remain_on_chan(struct mwifiex_private *priv,
+                          struct host_cmd_ds_command *resp,
+                          struct host_cmd_ds_remain_on_chan *roc_cfg)
+{
+       struct host_cmd_ds_remain_on_chan *resp_cfg = &resp->params.roc_cfg;
+
+       if (roc_cfg)
+               memcpy(roc_cfg, resp_cfg, sizeof(*roc_cfg));
+
+       return 0;
+}
+
+/*
  * This function handles the command response of register access.
  *
  * The register value and offset are returned to the user. For EEPROM
@@ -875,6 +891,9 @@ int mwifiex_process_sta_cmdresp(struct mwifiex_private *priv, u16 cmdresp_no,
        case HostCmd_CMD_VERSION_EXT:
                ret = mwifiex_ret_ver_ext(priv, resp, data_buf);
                break;
+       case HostCmd_CMD_REMAIN_ON_CHAN:
+               ret = mwifiex_ret_remain_on_chan(priv, resp, data_buf);
+               break;
        case HostCmd_CMD_MGMT_FRAME_REG:
        case HostCmd_CMD_FUNC_INIT:
        case HostCmd_CMD_FUNC_SHUTDOWN:

diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index 731562f..fd09a21 100644 (file)
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -1043,6 +1043,35 @@ mwifiex_get_ver_ext(struct mwifiex_private *priv)
        return 0;
 }
 
+int
+mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
+                          struct ieee80211_channel *chan,
+                          enum nl80211_channel_type *ct,
+                          unsigned int duration)
+{
+       struct host_cmd_ds_remain_on_chan roc_cfg;
+       u8 sc;
+
+       memset(&roc_cfg, 0, sizeof(roc_cfg));
+       roc_cfg.action = cpu_to_le16(action);
+       if (action == HostCmd_ACT_GEN_SET) {
+               roc_cfg.band_cfg = chan->band;
+               sc = mwifiex_chan_type_to_sec_chan_offset(*ct);
+               roc_cfg.band_cfg |= (sc << 2);
+
+               roc_cfg.channel =
+                       ieee80211_frequency_to_channel(chan->center_freq);
+               roc_cfg.duration = cpu_to_le32(duration);
+       }
+       if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_REMAIN_ON_CHAN,
+                                 action, 0, &roc_cfg)) {
+               dev_err(priv->adapter->dev, "failed to remain on channel\n");
+               return -1;
+       }
+
+       return roc_cfg.status;
+}
+
 /*
  * Sends IOCTL request to get statistics information.
  *

diff --git a/drivers/net/wireless/mwifiex/util.c b/drivers/net/wireless/mwifiex/util.c
index e1dc3e4..ae88f80 100644 (file)
--- a/drivers/net/wireless/mwifiex/util.c
+++ b/drivers/net/wireless/mwifiex/util.c
@@ -174,7 +174,7 @@ mwifiex_process_mgmt_packet(struct mwifiex_adapter *adapter,
        pkt_len -= ETH_ALEN + sizeof(pkt_len);
        rx_pd->rx_pkt_length = cpu_to_le16(pkt_len);
 
-       cfg80211_rx_mgmt(priv->wdev, priv->mgmt_rx_freq,
+       cfg80211_rx_mgmt(priv->wdev, priv->roc_cfg.chan.center_freq,
                         CAL_RSSI(rx_pd->snr, rx_pd->nf),
                         skb->data, pkt_len, GFP_ATOMIC);