Add support for cfg80211 set_pmksa/del_pmksa/flush_pmksa. Updating PMKID
entry list is done on driver side since NDIS API requires full list update.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@xxxxxxxx>
---
drivers/net/wireless/rndis_wlan.c | 271 +++++++++++++++++++++++++++++++++++++
1 files changed, 271 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 4054b70..65f5236 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -372,6 +372,18 @@ struct ndis_80211_capability {
struct ndis_80211_auth_encr_pair auth_encr_pair[0];
} __attribute__((packed));
+struct ndis_80211_bssid_info {
+ u8 bssid[6];
+ u8 padding[2];
+ u8 pmkid[16];
+};
+
+struct ndis_80211_pmkid {
+ __le32 length;
+ __le32 bssid_info_count;
+ struct ndis_80211_bssid_info bssid_info[0];
+};
+
/*
* private data
*/
@@ -542,6 +554,14 @@ static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *mac, struct station_info *sinfo);
+static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_pmksa *pmksa);
+
+static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_pmksa *pmksa);
+
+static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
+
static struct cfg80211_ops rndis_config_ops = {
.change_virtual_intf = rndis_change_virtual_intf,
.scan = rndis_scan,
@@ -558,6 +578,9 @@ static struct cfg80211_ops rndis_config_ops = {
.set_default_key = rndis_set_default_key,
.get_station = rndis_get_station,
.dump_station = rndis_dump_station,
+ .set_pmksa = rndis_set_pmksa,
+ .del_pmksa = rndis_del_pmksa,
+ .flush_pmksa = rndis_flush_pmksa,
};
static void *rndis_wiphy_privid = &rndis_wiphy_privid;
@@ -1565,6 +1588,190 @@ static void set_multicast_list(struct usbnet *usbdev)
le32_to_cpu(filter), ret);
}
+#ifdef DEBUG
+static void debug_print_pmkids(struct usbnet *usbdev,
+ struct ndis_80211_pmkid *pmkids,
+ const char *func_str)
+{
+ struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+ int i, len, count, max_pmkids;
+
+ max_pmkids = priv->wdev.wiphy->max_num_pmkids;
+ len = le32_to_cpu(pmkids->length);
+ count = le32_to_cpu(pmkids->bssid_info_count);
+
+ devdbg(usbdev, "%s: %d PMKIDs", func_str, count);
+
+ if (count > max_pmkids)
+ count = max_pmkids;
+
+ for (i = 0; i < count; i++) {
+ u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
+
+ devdbg(usbdev, "%s: bssid: %pM, pmkid: %08X:%08X:%08X:%08X",
+ func_str, pmkids->bssid_info[i].bssid,
+ cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
+ cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
+ }
+}
+#else
+static void debug_print_pmkids(struct usbnet *usbdev,
+ struct ndis_80211_pmkid *pmkids,
+ const char *func_str)
+{
+ return;
+}
+#endif
+
+static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
+{
+ struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+ struct ndis_80211_pmkid *pmkids;
+ int len, ret, max_pmkids;
+
+ max_pmkids = priv->wdev.wiphy->max_num_pmkids;
+ len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
+
+ pmkids = kzalloc(len, GFP_KERNEL);
+ if (!pmkids)
+ return ERR_PTR(-ENOMEM);
+
+ pmkids->length = cpu_to_le32(len);
+ pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
+
+ ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
+ if (ret < 0) {
+ devdbg(usbdev, "get_device_pmkids(): OID_802_11_PMKID(%d, %d)"
+ " -> %d", len, max_pmkids, ret);
+
+ kfree(pmkids);
+ return ERR_PTR(ret);
+ }
+
+ if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
+ pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
+
+ debug_print_pmkids(usbdev, pmkids, "get_device_pmkids()");
+
+ return pmkids;
+}
+
+static int set_device_pmkids(struct usbnet *usbdev,
+ struct ndis_80211_pmkid *pmkids)
+{
+ int ret, len, num_pmkids;
+
+ num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
+ len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
+ pmkids->length = cpu_to_le32(len);
+
+ debug_print_pmkids(usbdev, pmkids, "set_device_pmkids()");
+
+ ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
+ le32_to_cpu(pmkids->length));
+ if (ret < 0) {
+ devdbg(usbdev, "set_device_pmkids(): OID_802_11_PMKID(%d, %d)"
+ " -> %d", len, num_pmkids, ret);
+ }
+
+ kfree(pmkids);
+ return ret;
+}
+
+static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
+ struct ndis_80211_pmkid *pmkids,
+ struct cfg80211_pmksa *pmksa,
+ int max_pmkids)
+{
+ int i, len, count, newlen, err;
+
+ len = le32_to_cpu(pmkids->length);
+ count = le32_to_cpu(pmkids->bssid_info_count);
+
+ if (count > max_pmkids)
+ count = max_pmkids;
+
+ for (i = 0; i < count; i++)
+ if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
+ pmksa->bssid))
+ break;
+
+ /* pmkid not found */
+ if (i == count) {
+ devdbg(usbdev, "remove_pmkid(): bssid not found (%pM)",
+ pmksa->bssid);
+ err = -ENOENT;
+ goto error;
+ }
+
+ for (; i + 1 < count; i++)
+ pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
+
+ count--;
+ newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
+
+ pmkids->length = cpu_to_le32(newlen);
+ pmkids->bssid_info_count = cpu_to_le32(count);
+
+ return pmkids;
+error:
+ kfree(pmkids);
+ return ERR_PTR(err);
+}
+
+static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
+ struct ndis_80211_pmkid *pmkids,
+ struct cfg80211_pmksa *pmksa,
+ int max_pmkids)
+{
+ int i, err, len, count, newlen;
+
+ len = le32_to_cpu(pmkids->length);
+ count = le32_to_cpu(pmkids->bssid_info_count);
+
+ if (count > max_pmkids)
+ count = max_pmkids;
+
+ /* update with new pmkid */
+ for (i = 0; i < count; i++) {
+ if (compare_ether_addr(pmkids->bssid_info[i].bssid,
+ pmksa->bssid))
+ continue;
+
+ memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
+ WLAN_PMKID_LEN);
+
+ return pmkids;
+ }
+
+ /* out of space, return error */
+ if (i == max_pmkids) {
+ devdbg(usbdev, "update_pmkid(): out of space");
+ err = -ENOSPC;
+ goto error;
+ }
+
+ /* add new pmkid */
+ newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
+
+ pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
+ if (!pmkids) {
+ err = -ENOMEM;
+ goto error;
+ }
+
+ pmkids->length = cpu_to_le32(newlen);
+ pmkids->bssid_info_count = cpu_to_le32(count + 1);
+
+ memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
+ memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
+
+ return pmkids;
+error:
+ kfree(pmkids);
+ return ERR_PTR(err);
+}
+
/*
* cfg80211 ops
*/
@@ -2164,6 +2371,70 @@ static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
return 0;
}
+static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_pmksa *pmksa)
+{
+ struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+ struct usbnet *usbdev = priv->usbdev;
+ struct ndis_80211_pmkid *pmkids;
+
+ devdbg(usbdev, "rndis_set_pmksa()");
+
+ pmkids = get_device_pmkids(usbdev);
+ if (IS_ERR(pmkids)) {
+ /* couldn't read PMKID cache from device */
+ return PTR_ERR(pmkids);
+ }
+
+ pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
+ if (IS_ERR(pmkids)) {
+ /* not found, list full, etc */
+ return PTR_ERR(pmkids);
+ }
+
+ return set_device_pmkids(usbdev, pmkids);
+}
+
+static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_pmksa *pmksa)
+{
+ struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+ struct usbnet *usbdev = priv->usbdev;
+ struct ndis_80211_pmkid *pmkids;
+
+ devdbg(usbdev, "rndis_del_pmksa()");
+
+ pmkids = get_device_pmkids(usbdev);
+ if (IS_ERR(pmkids)) {
+ /* Couldn't read PMKID cache from device */
+ return PTR_ERR(pmkids);
+ }
+
+ pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
+ if (IS_ERR(pmkids)) {
+ /* not found, etc */
+ return PTR_ERR(pmkids);
+ }
+
+ return set_device_pmkids(usbdev, pmkids);
+}
+
+static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
+{
+ struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+ struct usbnet *usbdev = priv->usbdev;
+ struct ndis_80211_pmkid pmkid;
+
+ devdbg(usbdev, "rndis_flush_pmksa()");
+
+ memset(&pmkid, 0, sizeof(pmkid));
+
+ pmkid.length = cpu_to_le32(sizeof(pmkid));
+ pmkid.bssid_info_count = cpu_to_le32(0);
+
+ return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
+}
+
/*
* workers, indication handlers, device poller
*/
--
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