staging: brcm80211: Added support to change roaming parameters from brcmfmac driver

'wl_dongle_roam' function moved out of conditional compilation to allow
the fullmac driver to change FW roaming parameters

Cc: devel@linuxdriverproject.org
Cc: linux-wireless@vger.kernel.org
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
index 27baf56..e90015c 100644 (file)
--- a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
@@ -259,8 +259,6 @@ static s32 wl_dongle_up(struct net_device *ndev, u32 up);
 static s32 wl_dongle_power(struct net_device *ndev, u32 power_mode);
 static s32 wl_dongle_glom(struct net_device *ndev, u32 glom,
                            u32 dongle_align);
-static s32 wl_dongle_roam(struct net_device *ndev, u32 roamvar,
-                           u32 bcn_timeout);
 static s32 wl_dongle_scantime(struct net_device *ndev, s32 scan_assoc_time,
                                s32 scan_unassoc_time);
 static s32 wl_dongle_offload(struct net_device *ndev, s32 arpoe,
@@ -272,6 +270,8 @@ static s32 wl_update_wiphybands(struct wl_priv *wl);
 
 static s32 wl_dongle_eventmsg(struct net_device *ndev);
 static s32 wl_config_dongle(struct wl_priv *wl, bool need_lock);
+static s32 wl_dongle_roam(struct net_device *ndev, u32 roamvar,
+                           u32 bcn_timeout);
 
 /*
 ** iscan handler
@@ -3633,36 +3633,6 @@ dongle_glom_out:
 }
 
 static s32
-wl_dongle_roam(struct net_device *ndev, u32 roamvar, u32 bcn_timeout)
-{
-       s8 iovbuf[WL_EVENTING_MASK_LEN + 12];   /*  Room for "event_msgs" +
-                                                '\0' + bitvec  */
-       s32 err = 0;
-
-       /* Setup timeout if Beacons are lost and roam is
-                off to report link down */
-       if (roamvar) {
-               bcm_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf,
-                           sizeof(iovbuf));
-               err = wl_dev_ioctl(ndev, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
-               if (unlikely(err)) {
-                       WL_ERR("bcn_timeout error (%d)\n", err);
-                       goto dongle_rom_out;
-               }
-       }
-       /* Enable/Disable built-in roaming to allow supplicant
-                to take care of roaming */
-       bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf, sizeof(iovbuf));
-       err = wl_dev_ioctl(ndev, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
-       if (unlikely(err)) {
-               WL_ERR("roam_off error (%d)\n", err);
-               goto dongle_rom_out;
-       }
-dongle_rom_out:
-       return err;
-}
-
-static s32
 wl_dongle_scantime(struct net_device *ndev, s32 scan_assoc_time,
                   s32 scan_unassoc_time)
 {
@@ -3890,6 +3860,63 @@ dongle_eventmsg_out:
        return err;
 }
 
+static s32
+wl_dongle_roam(struct net_device *ndev, u32 roamvar, u32 bcn_timeout)
+{
+       s8 iovbuf[32];
+       s32 roamtrigger[2];
+       s32 roam_delta[2];
+       s32 err = 0;
+
+       /*
+        * Setup timeout if Beacons are lost and roam is
+        * off to report link down
+        */
+       if (roamvar) {
+               bcm_mkiovar("bcn_timeout", (char *)&bcn_timeout,
+                       sizeof(bcn_timeout), iovbuf, sizeof(iovbuf));
+               err = wl_dev_ioctl(ndev, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
+               if (unlikely(err)) {
+                       WL_ERR("bcn_timeout error (%d)\n", err);
+                       goto dongle_rom_out;
+               }
+       }
+
+       /*
+        * Enable/Disable built-in roaming to allow supplicant
+        * to take care of roaming
+        */
+       WL_INFO("Internal Roaming = %s\n", roamvar ? "Off" : "On");
+       bcm_mkiovar("roam_off", (char *)&roamvar,
+                               sizeof(roamvar), iovbuf, sizeof(iovbuf));
+       err = wl_dev_ioctl(ndev, WLC_SET_VAR, iovbuf, sizeof(iovbuf));
+       if (unlikely(err)) {
+               WL_ERR("roam_off error (%d)\n", err);
+               goto dongle_rom_out;
+       }
+
+       roamtrigger[0] = WL_ROAM_TRIGGER_LEVEL;
+       roamtrigger[1] = WLC_BAND_ALL;
+       err = wl_dev_ioctl(ndev, WLC_SET_ROAM_TRIGGER,
+                       (void *)roamtrigger, sizeof(roamtrigger));
+       if (unlikely(err)) {
+               WL_ERR("WLC_SET_ROAM_TRIGGER error (%d)\n", err);
+               goto dongle_rom_out;
+       }
+
+       roam_delta[0] = WL_ROAM_DELTA;
+       roam_delta[1] = WLC_BAND_ALL;
+       err = wl_dev_ioctl(ndev, WLC_SET_ROAM_DELTA,
+                               (void *)roam_delta, sizeof(roam_delta));
+       if (unlikely(err)) {
+               WL_ERR("WLC_SET_ROAM_DELTA error (%d)\n", err);
+               goto dongle_rom_out;
+       }
+
+dongle_rom_out:
+       return err;
+}
+
 s32 wl_config_dongle(struct wl_priv *wl, bool need_lock)
 {
 #ifndef DHD_SDALIGN
@@ -3920,9 +3947,6 @@ s32 wl_config_dongle(struct wl_priv *wl, bool need_lock)
        err = wl_dongle_glom(ndev, 0, DHD_SDALIGN);
        if (unlikely(err))
                goto default_conf_out;
-       err = wl_dongle_roam(ndev, (wl->roam_on ? 0 : 1), 3);
-       if (unlikely(err))
-               goto default_conf_out;
        wl_dongle_scantime(ndev, 40, 80);
        wl_dongle_offload(ndev, 1, 0xf);
        wl_dongle_filter(ndev, 1);
@@ -3931,6 +3955,9 @@ s32 wl_config_dongle(struct wl_priv *wl, bool need_lock)
        err = wl_dongle_eventmsg(ndev);
        if (unlikely(err))
                goto default_conf_out;
+       err = wl_dongle_roam(ndev, (wl->roam_on ? 0 : 1), WL_BEACON_TIMEOUT);
+       if (unlikely(err))
+               goto default_conf_out;
        err = wl_dongle_mode(ndev, wdev->iftype);
        if (unlikely(err && err != -EINPROGRESS))
                goto default_conf_out;

diff --git a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h
index 6b61010..04381a9 100644 (file)
--- a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h
+++ b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h
@@ -95,6 +95,10 @@ do {                                                         \
                                 */
 #define WL_FILE_NAME_MAX               256
 
+#define WL_ROAM_TRIGGER_LEVEL          -75
+#define WL_ROAM_DELTA                  20
+#define WL_BEACON_TIMEOUT              3
+
 /* dongle status */
 enum wl_status {
        WL_STATUS_READY,