From: Daniel Kim <dekim@xxxxxxxxxxxx>
This patch enables 40MHz bandwidth in 2GHz band after checking whether
cfg80211 allows it or not, and enables OBSS scanning operations to
to support 20/40 BSS coexistence.
Reviewed-by: Arend Van Spriel <arend@xxxxxxxxxxxx>
Reviewed-by: Hante Meuleman <meuleman@xxxxxxxxxxxx>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx>
Signed-off-by: Daniel Kim <dekim@xxxxxxxxxxxx>
Signed-off-by: Arend van Spriel <arend@xxxxxxxxxxxx>
---
.../net/wireless/brcm80211/brcmfmac/fwil_types.h | 10 ++++++++
.../net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 26 ++++++++++++++++++++
2 files changed, 36 insertions(+)
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
index af17a5b..614e488 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
@@ -48,6 +48,11 @@
#define BRCMF_MAXRATES_IN_SET 16 /* max # of rates in rateset */
+/* OBSS Coex Auto/On/Off */
+#define BRCMF_OBSS_COEX_AUTO (-1)
+#define BRCMF_OBSS_COEX_OFF 0
+#define BRCMF_OBSS_COEX_ON 1
+
enum brcmf_fil_p2p_if_types {
BRCMF_FIL_P2P_IF_CLIENT,
BRCMF_FIL_P2P_IF_GO,
@@ -87,6 +92,11 @@ struct brcmf_fil_bss_enable_le {
__le32 enable;
};
+struct brcmf_fil_bwcap_le {
+ __le32 band;
+ __le32 bw_cap;
+};
+
/**
* struct tdls_iovar - common structure for tdls iovars.
*
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index 9f75afb..428b4cb 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -191,6 +191,7 @@ static struct ieee80211_supported_band __wl_band_2ghz = {
.n_channels = ARRAY_SIZE(__wl_2ghz_channels),
.bitrates = wl_g_rates,
.n_bitrates = wl_g_rates_size,
+ .ht_cap = {IEEE80211_HT_CAP_SUP_WIDTH_20_40, true},
};
static struct ieee80211_supported_band __wl_band_5ghz_a = {
@@ -4929,6 +4930,19 @@ static void init_vif_event(struct brcmf_cfg80211_vif_event *event)
mutex_init(&event->vif_event_lock);
}
+static int brcmf_set_bwcap(struct brcmf_if *ifp, u32 band, u32 bw_cap)
+{
+ struct brcmf_fil_bwcap_le band_bwcap;
+ int err;
+
+ band_bwcap.band = cpu_to_le32(band);
+ band_bwcap.bw_cap = cpu_to_le32(bw_cap);
+ err = brcmf_fil_iovar_data_set(ifp, "bw_cap", &band_bwcap,
+ sizeof(band_bwcap));
+
+ return err;
+}
+
struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
struct device *busdev)
{
@@ -4986,6 +5000,18 @@ struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
goto cfg80211_p2p_attach_out;
}
+ /* If cfg80211 didn't disable 40MHz HT CAP in wiphy_register(),
+ * setup 40MHz in 2GHz band and enable OBSS scanning.
+ */
+ if (wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap.cap &
+ IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
+ err = brcmf_set_bwcap(ifp, WLC_BAND_2G, WLC_BW_CAP_40MHZ);
+ if (!err) {
+ err = brcmf_fil_iovar_int_set(ifp, "obss_coex",
+ BRCMF_OBSS_COEX_AUTO);
+ }
+ }
+
err = brcmf_fil_iovar_int_set(ifp, "tdls_enable", 1);
if (err) {
brcmf_dbg(INFO, "TDLS not enabled (%d)\n", err);
--
1.7.9.5
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