[PATCH v2 09/22] mac80211: support S1G STA capabilities

Thomas Pedersen
2020-08-31T20:56:25Z

Include the S1G Capabilities element in an association
request, and support the cfg80211 capability overrides.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
net/mac80211/ieee80211_i.h | 4 ++++
net/mac80211/mlme.c | 8 +++++++
net/mac80211/util.c | 45 ++++++++++++++++++++++++++++++++++++++
3 files changed, 57 insertions(+)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 6bf879660a93..9363f43887b4 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -530,6 +530,8 @@ struct ieee80211_if_managed {
struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
+ struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
+ struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */

/* TDLS support */
u8 tdls_peer[ETH_ALEN] __aligned(2);
@@ -2193,6 +2195,8 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, bool need_basic,
enum nl80211_band band);
u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
+u8 *ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta_s1g_cap *caps, u8 *buf);

/* channel management */
bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index ac870309b911..b69889563457 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1018,6 +1018,10 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
}

+ if (sband->band == NL80211_BAND_S1GHZ)
+ pos = ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap,
+ skb_put(skb, 17));
+
/* add any remaining custom (i.e. vendor specific here) IEs */
if (assoc_data->ie_len) {
noffset = assoc_data->ie_len;
@@ -5461,6 +5465,10 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
sizeof(ifmgd->vht_capa_mask));

+ memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa));
+ memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask,
+ sizeof(ifmgd->s1g_capa_mask));
+
if (req->ie && req->ie_len) {
memcpy(assoc_data->ie, req->ie, req->ie_len);
assoc_data->ie_len = req->ie_len;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index c8504ffc71a1..27b2f1ceca69 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -4276,6 +4276,51 @@ int ieee80211_max_num_channels(struct ieee80211_local *local)
return max_num_different_channels;
}

+u8 *ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta_s1g_cap *own_cap, u8 *buf)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_s1g_cap s1g_capab;
+ u8 *pos = buf;
+ int i;
+
+ if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+ return pos;
+
+ if (!own_cap->s1g)
+ return pos;
+
+ memcpy(s1g_capab.capab_info, own_cap->cap, sizeof(own_cap->cap));
+ memcpy(s1g_capab.supp_mcs_nss, own_cap->nss_mcs,
+ sizeof(own_cap->nss_mcs));
+
+ /* override the capability info */
+ for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
+ u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
+
+ s1g_capab.capab_info[i] &= ~mask;
+ s1g_capab.capab_info[i] |= (ifmgd->s1g_capa.capab_info[i] &
+ mask);
+ }
+
+ /* then MCS and NSS set */
+ for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
+ u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
+
+ s1g_capab.supp_mcs_nss[i] &= ~mask;
+ s1g_capab.supp_mcs_nss[i] |= (ifmgd->s1g_capa.supp_mcs_nss[i] &
+ mask);
+ }
+
+ *pos++ = WLAN_EID_S1G_CAPABILITIES;
+ *pos++ = sizeof(s1g_capab);
+
+ memcpy(pos, &s1g_capab, sizeof(s1g_capab));
+ pos += sizeof(s1g_capab);
+
+ return pos;
+}
+
u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
{
*buf++ = WLAN_EID_VENDOR_SPECIFIC;
--
2.20.1