mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

mac80211: Add EHT capabilities to association/probe request 

Add the EHT capabilities element to both probe request and
association request frames, if advertised by the driver.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.2ec94388acee.I40d2ef06099cb091e9c2c01f8ef521b993a3d559@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ilan Peer 2022-02-14 17:30:01 +01:00 committed by Johannes Berg
parent 5dca295dd7
commit 820acc810f
4 changed files with 144 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
net/mac80211/ieee80211_i.h
View File

@ -2520,4 +2520,9 @@ u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
u8 *ieee80211_ie_build_eht_cap(u8 *pos,
const struct ieee80211_sta_he_cap *he_cap,
const struct ieee80211_sta_eht_cap *eht_cap,
u8 *end);
#endif /* IEEE80211_I_H */

14
net/mac80211/main.c
View File

@ -909,7 +909,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
int result, i;
enum nl80211_band band;
int channels, max_bitrates;
bool supp_ht, supp_vht, supp_he;
bool supp_ht, supp_vht, supp_he, supp_eht;
struct cfg80211_chan_def dflt_chandef = {};
if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
@ -978,6 +978,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
supp_ht = false;
supp_vht = false;
supp_he = false;
supp_eht = false;
for (band = 0; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *sband;
@ -1021,6 +1022,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
iftd = &sband->iftype_data[i];
supp_he = supp_he || iftd->he_cap.has_he;
supp_eht = supp_eht || iftd->eht_cap.has_eht;
}
/* HT, VHT, HE require QoS, thus >= 4 queues */
@ -1028,6 +1030,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
(supp_ht || supp_vht || supp_he)))
return -EINVAL;
/* EHT requires HE support */
if (WARN_ON(supp_eht && !supp_he))
return -EINVAL;
if (!sband->ht_cap.ht_supported)
continue;
@ -1138,6 +1144,12 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
3 + sizeof(struct ieee80211_he_cap_elem) +
sizeof(struct ieee80211_he_mcs_nss_supp) +
IEEE80211_HE_PPE_THRES_MAX_LEN;
if (supp_eht)
local->scan_ies_len +=
3 + sizeof(struct ieee80211_eht_cap_elem) +
sizeof(struct ieee80211_eht_mcs_nss_supp) +
IEEE80211_EHT_PPE_THRES_MAX_LEN;
}
if (!local->ops->hw_scan) {

48
net/mac80211/mlme.c
View File

@ -692,6 +692,48 @@ static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata,
ieee80211_ie_build_he_6ghz_cap(sdata, skb);
}
static void ieee80211_add_eht_ie(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb,
struct ieee80211_supported_band *sband)
{
u8 *pos;
const struct ieee80211_sta_he_cap *he_cap;
const struct ieee80211_sta_eht_cap *eht_cap;
struct ieee80211_chanctx_conf *chanctx_conf;
u8 eht_cap_size;
bool reg_cap = false;
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
if (!WARN_ON_ONCE(!chanctx_conf))
reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy,
&chanctx_conf->def,
IEEE80211_CHAN_NO_HE |
IEEE80211_CHAN_NO_EHT);
rcu_read_unlock();
he_cap = ieee80211_get_he_iftype_cap(sband,
ieee80211_vif_type_p2p(&sdata->vif));
eht_cap = ieee80211_get_eht_iftype_cap(sband,
ieee80211_vif_type_p2p(&sdata->vif));
/*
* EHT capabilities element is only added if the HE capabilities element
* was added so assume that 'he_cap' is valid and don't check it.
*/
if (WARN_ON(!he_cap || !eht_cap || !reg_cap))
return;
eht_cap_size =
2 + 1 + sizeof(eht_cap->eht_cap_elem) +
ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
&eht_cap->eht_cap_elem) +
ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
eht_cap->eht_cap_elem.phy_cap_info);
pos = skb_put(skb, eht_cap_size);
ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, pos + eht_cap_size);
}
static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
@ -1020,9 +1062,13 @@ skip_rates:
ifmgd->flags |= IEEE80211_STA_DISABLE_HE |
IEEE80211_STA_DISABLE_EHT;
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) {
ieee80211_add_he_ie(sdata, skb, sband);
if (!(ifmgd->flags & IEEE80211_STA_DISABLE_EHT))
ieee80211_add_eht_ie(sdata, skb, sband);
}
/* if present, add any custom non-vendor IEs that go after HE */
if (assoc_data->ie_len) {
noffset = ieee80211_ie_split_vendor(assoc_data->ie,

79
net/mac80211/util.c
View File

@ -1812,6 +1812,7 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
const struct ieee80211_sta_he_cap *he_cap;
const struct ieee80211_sta_eht_cap *eht_cap;
u8 *pos = buffer, *end = buffer + buffer_len;
size_t noffset;
int supp_rates_len, i;
@ -1992,6 +1993,18 @@ static int ieee80211_build_preq_ies_band(struct ieee80211_sub_if_data *sdata,
goto out_err;
}
eht_cap = ieee80211_get_eht_iftype_cap(sband,
ieee80211_vif_type_p2p(&sdata->vif));
if (eht_cap &&
cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band),
IEEE80211_CHAN_NO_HE |
IEEE80211_CHAN_NO_EHT)) {
pos = ieee80211_ie_build_eht_cap(pos, he_cap, eht_cap, end);
if (!pos)
goto out_err;
}
if (cfg80211_any_usable_channels(local->hw.wiphy,
BIT(NL80211_BAND_6GHZ),
IEEE80211_CHAN_NO_HE)) {
@ -4740,3 +4753,69 @@ u16 ieee80211_encode_usf(int listen_interval)
return (u16) listen_interval;
}
u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype)
{
const struct ieee80211_sta_he_cap *he_cap;
const struct ieee80211_sta_eht_cap *eht_cap;
struct ieee80211_supported_band *sband;
u8 n;
sband = ieee80211_get_sband(sdata);
if (!sband)
return 0;
he_cap = ieee80211_get_he_iftype_cap(sband, iftype);
eht_cap = ieee80211_get_eht_iftype_cap(sband, iftype);
if (!he_cap || !eht_cap)
return 0;
n = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
&eht_cap->eht_cap_elem);
return 2 + 1 +
sizeof(he_cap->he_cap_elem) + n +
ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
eht_cap->eht_cap_elem.phy_cap_info);
return 0;
}
u8 *ieee80211_ie_build_eht_cap(u8 *pos,
const struct ieee80211_sta_he_cap *he_cap,
const struct ieee80211_sta_eht_cap *eht_cap,
u8 *end)
{
u8 mcs_nss_len, ppet_len;
u8 ie_len;
u8 *orig_pos = pos;
/* Make sure we have place for the IE */
if (!he_cap || !eht_cap)
return orig_pos;
mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
&eht_cap->eht_cap_elem);
ppet_len = ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0],
eht_cap->eht_cap_elem.phy_cap_info);
ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len;
if ((end - pos) < ie_len)
return orig_pos;
*pos++ = WLAN_EID_EXTENSION;
*pos++ = ie_len - 2;
*pos++ = WLAN_EID_EXT_EHT_CAPABILITY;
/* Fixed data */
memcpy(pos, &eht_cap->eht_cap_elem, sizeof(eht_cap->eht_cap_elem));
pos += sizeof(eht_cap->eht_cap_elem);
memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len);
pos += mcs_nss_len;
if (ppet_len) {
memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len);
pos += ppet_len;
}
return pos;
}