mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
mac80211: add supported channels IE during TDLS setup
This information element is mandatory in case TDLS channel-switching is to be supported. The channels given are ones supported and allowed to be active in the current regulatory setting. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
parent
7528ec5776
commit
f0d29cb979
@ -48,6 +48,75 @@ static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
|
||||
*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
|
||||
}
|
||||
|
||||
static u8
|
||||
ieee80211_tdls_add_subband(struct ieee80211_sub_if_data *sdata,
|
||||
struct sk_buff *skb, u16 start, u16 end,
|
||||
u16 spacing)
|
||||
{
|
||||
u8 subband_cnt = 0, ch_cnt = 0;
|
||||
struct ieee80211_channel *ch;
|
||||
struct cfg80211_chan_def chandef;
|
||||
int i, subband_start;
|
||||
|
||||
for (i = start; i <= end; i += spacing) {
|
||||
if (!ch_cnt)
|
||||
subband_start = i;
|
||||
|
||||
ch = ieee80211_get_channel(sdata->local->hw.wiphy, i);
|
||||
if (ch) {
|
||||
/* we will be active on the channel */
|
||||
u32 flags = IEEE80211_CHAN_DISABLED |
|
||||
IEEE80211_CHAN_NO_IR;
|
||||
cfg80211_chandef_create(&chandef, ch,
|
||||
NL80211_CHAN_HT20);
|
||||
if (cfg80211_chandef_usable(sdata->local->hw.wiphy,
|
||||
&chandef, flags)) {
|
||||
ch_cnt++;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
if (ch_cnt) {
|
||||
u8 *pos = skb_put(skb, 2);
|
||||
*pos++ = ieee80211_frequency_to_channel(subband_start);
|
||||
*pos++ = ch_cnt;
|
||||
|
||||
subband_cnt++;
|
||||
ch_cnt = 0;
|
||||
}
|
||||
}
|
||||
|
||||
return subband_cnt;
|
||||
}
|
||||
|
||||
static void
|
||||
ieee80211_tdls_add_supp_channels(struct ieee80211_sub_if_data *sdata,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
/*
|
||||
* Add possible channels for TDLS. These are channels that are allowed
|
||||
* to be active.
|
||||
*/
|
||||
u8 subband_cnt;
|
||||
u8 *pos = skb_put(skb, 2);
|
||||
|
||||
*pos++ = WLAN_EID_SUPPORTED_CHANNELS;
|
||||
|
||||
/*
|
||||
* 5GHz and 2GHz channels numbers can overlap. Ignore this for now, as
|
||||
* this doesn't happen in real world scenarios.
|
||||
*/
|
||||
|
||||
/* 2GHz, with 5MHz spacing */
|
||||
subband_cnt = ieee80211_tdls_add_subband(sdata, skb, 2412, 2472, 5);
|
||||
|
||||
/* 5GHz, with 20MHz spacing */
|
||||
subband_cnt += ieee80211_tdls_add_subband(sdata, skb, 5000, 5825, 20);
|
||||
|
||||
/* length */
|
||||
*pos = 2 * subband_cnt;
|
||||
}
|
||||
|
||||
static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata,
|
||||
u16 status_code)
|
||||
{
|
||||
@ -190,6 +259,7 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_sub_if_data *sdata,
|
||||
|
||||
ieee80211_add_srates_ie(sdata, skb, false, band);
|
||||
ieee80211_add_ext_srates_ie(sdata, skb, false, band);
|
||||
ieee80211_tdls_add_supp_channels(sdata, skb);
|
||||
|
||||
/* add any custom IEs that go before Extended Capabilities */
|
||||
if (extra_ies_len) {
|
||||
@ -526,6 +596,7 @@ ieee80211_tdls_prep_mgmt_packet(struct wiphy *wiphy, struct net_device *dev,
|
||||
26 + /* max(WMM-info, WMM-param) */
|
||||
2 + max(sizeof(struct ieee80211_ht_cap),
|
||||
sizeof(struct ieee80211_ht_operation)) +
|
||||
50 + /* supported channels */
|
||||
extra_ies_len +
|
||||
sizeof(struct ieee80211_tdls_lnkie));
|
||||
if (!skb)
|
||||
|
Loading…
Reference in New Issue
Block a user