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qtnfmac: enable WPA3 SAE support

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In the case of SAE AP, drivers offload authentication to user-space
software, e.g. hostapd. For FullMAC drivers the procedure is as follows.
If auth_type is SAE and user space indicates external authentication
capability, then driver requests authentication offload to user-space
software using cfg80211_external_auth_request call. From that point,
auth frame exchange is performed transparently for driver: user-space
software sends/receives mgmt frames using mgmt_tx/mgmt_frame_register
cfg80211 callbacks. As soon as authenitcation is completed, user-space
software notifies driver about its status using external_auth cfg80211
callback.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Sergey Matyukevich
2019-02-05 09:48:57 +00:00
committed by Kalle Valo
parent 524d6323af
commit 47b08e75a6
5 changed files with 145 additions and 2 deletions
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40
drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
View File

@@ -53,9 +53,11 @@ static const u32 qtnf_cipher_suites[] = {
static const struct ieee80211_txrx_stypes
qtnf_mgmt_stypes[NUM_NL80211_IFTYPES] = {
[NL80211_IFTYPE_STATION] = {
.tx = BIT(IEEE80211_STYPE_ACTION >> 4),
.tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_AUTH >> 4),
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
BIT(IEEE80211_STYPE_AUTH >> 4),
},
[NL80211_IFTYPE_AP] = {
.tx = BIT(IEEE80211_STYPE_ACTION >> 4),
@@ -636,6 +638,12 @@ qtnf_connect(struct wiphy *wiphy, struct net_device *dev,
if (vif->wdev.iftype != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
if (sme->auth_type == NL80211_AUTHTYPE_SAE &&
!(sme->flags & CONNECT_REQ_EXTERNAL_AUTH_SUPPORT)) {
pr_err("can not offload authentication to userspace\n");
return -EOPNOTSUPP;
}
if (sme->bssid)
ether_addr_copy(vif->bssid, sme->bssid);
else
@@ -652,6 +660,30 @@ out:
return ret;
}
static int
qtnf_external_auth(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_external_auth_params *auth)
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
int ret;
if (vif->wdev.iftype != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
if (!ether_addr_equal(vif->bssid, auth->bssid))
pr_warn("unexpected bssid: %pM", auth->bssid);
ret = qtnf_cmd_send_external_auth(vif, auth);
if (ret) {
pr_err("VIF%u.%u: failed to report external auth\n",
vif->mac->macid, vif->vifid);
goto out;
}
out:
return ret;
}
static int
qtnf_disconnect(struct wiphy *wiphy, struct net_device *dev,
u16 reason_code)
@@ -946,6 +978,7 @@ static struct cfg80211_ops qtn_cfg80211_ops = {
.set_default_mgmt_key = qtnf_set_default_mgmt_key,
.scan = qtnf_scan,
.connect = qtnf_connect,
.external_auth = qtnf_external_auth,
.disconnect = qtnf_disconnect,
.dump_survey = qtnf_dump_survey,
.get_channel = qtnf_get_channel,
@@ -1125,6 +1158,9 @@ int qtnf_wiphy_register(struct qtnf_hw_info *hw_info, struct qtnf_wmac *mac)
if (!(hw_info->hw_capab & QLINK_HW_CAPAB_OBSS_SCAN))
wiphy->features |= NL80211_FEATURE_NEED_OBSS_SCAN;
if (hw_info->hw_capab & QLINK_HW_CAPAB_SAE)
wiphy->features |= NL80211_FEATURE_SAE;
#ifdef CONFIG_PM
if (macinfo->wowlan)
wiphy->wowlan = macinfo->wowlan;