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brcmfmac: Enable 40MHz bandwidth in 2GHz band and OBSS scanning operations

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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@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Daniel Kim <dekim@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Daniel Kim 2014-03-20 10:18:00 +01:00 committed by John W. Linville
parent 370c5acef0
commit d235367960
2 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
View File

@ -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.
*

26
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
View File

@ -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);