On 19-5-2016 13:02, Rafał Miłecki wrote:
> This is important for brcmfmac as the firmware may pick different
> channel than requested. This has been tested with BCM4366B1 (in D-Link
> DIR-885L).
Can you elaborate? Is this for AP or STA mode?
> Signed-off-by: Rafał Miłecki <zajec5@xxxxxxxxx>
> ---
> .../broadcom/brcm80211/brcmfmac/cfg80211.c | 59 ++++++++++++++++++++++
> 1 file changed, 59 insertions(+)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> index 597495d..4fb9e3a 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> @@ -4892,6 +4892,64 @@ exit:
> return err;
> }
>
> +static int brcmf_cfg80211_get_channel(struct wiphy *wiphy,
> + struct wireless_dev *wdev,
> + struct cfg80211_chan_def *chandef)
> +{
> + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
> + struct net_device *ndev = wdev->netdev;
> + struct brcmf_if *ifp = netdev_priv(ndev);
Can this operation be done on a P2P_DEVICE interface, ie. wdev->netdev
== NULL?
> + struct brcmu_chan ch;
> + enum nl80211_band band = 0;
> + enum nl80211_chan_width width = 0;
> + u32 chanspec;
> + int freq, err;
> +
> + err = brcmf_fil_iovar_int_get(ifp, "chanspec", &chanspec);
> + if (err) {
> + brcmf_err("chanspec failed (%d)\n", err);
> + return err;
> + }
> +
> + ch.chspec = chanspec;
> + cfg->d11inf.decchspec(&ch);
> +
> + switch (ch.band) {
> + case BRCMU_CHAN_BAND_2G:
> + band = NL80211_BAND_2GHZ;
> + break;
> + case BRCMU_CHAN_BAND_5G:
> + band = NL80211_BAND_5GHZ;
> + break;
> + }
> +
> + switch (ch.bw) {
> + case BRCMU_CHAN_BW_80:
> + width = NL80211_CHAN_WIDTH_80;
> + break;
> + case BRCMU_CHAN_BW_40:
> + width = NL80211_CHAN_WIDTH_40;
> + break;
> + case BRCMU_CHAN_BW_20:
> + width = NL80211_CHAN_WIDTH_20;
> + break;
> + case BRCMU_CHAN_BW_80P80:
> + width = NL80211_CHAN_WIDTH_80P80;
> + break;
Not much sense to support this given that center_freq2 is set to zero below.
Regards,
Arend
> + case BRCMU_CHAN_BW_160:
> + width = NL80211_CHAN_WIDTH_160;
> + break;
> + }
> +
> + freq = ieee80211_channel_to_frequency(ch.control_ch_num, band);
> + chandef->chan = ieee80211_get_channel(wiphy, freq);
> + chandef->width = width;
> + chandef->center_freq1 = ieee80211_channel_to_frequency(ch.chnum, band);
> + chandef->center_freq2 = 0;
> +
> + return 0;
> +}
> +
> static int brcmf_cfg80211_crit_proto_start(struct wiphy *wiphy,
> struct wireless_dev *wdev,
> enum nl80211_crit_proto_id proto,
> @@ -5054,6 +5112,7 @@ static struct cfg80211_ops brcmf_cfg80211_ops = {
> .mgmt_tx = brcmf_cfg80211_mgmt_tx,
> .remain_on_channel = brcmf_p2p_remain_on_channel,
> .cancel_remain_on_channel = brcmf_cfg80211_cancel_remain_on_channel,
> + .get_channel = brcmf_cfg80211_get_channel,
> .start_p2p_device = brcmf_p2p_start_device,
> .stop_p2p_device = brcmf_p2p_stop_device,
> .crit_proto_start = brcmf_cfg80211_crit_proto_start,
>
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