cfg80211/nl80211: Add PMKSA caching candidate event
When the driver (or most likely firmware) decides which AP to use
for roaming based on internal scan result processing, user space
needs to be notified of PMKSA caching candidates to allow RSN
pre-authentication to be used.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 832f657..61adea5 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -1095,3 +1095,14 @@
nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
}
EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
+
+void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
+ const u8 *bssid, bool preauth, gfp_t gfp)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
+}
+EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 430b432..3c6427a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -7270,6 +7270,52 @@
nlmsg_free(msg);
}
+void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, int index,
+ const u8 *bssid, bool preauth, gfp_t gfp)
+{
+ struct sk_buff *msg;
+ struct nlattr *attr;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
+ if (!msg)
+ return;
+
+ hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
+ if (!hdr) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+
+ attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
+ if (!attr)
+ goto nla_put_failure;
+
+ NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
+ NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
+ if (preauth)
+ NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
+
+ nla_nest_end(msg, attr);
+
+ if (genlmsg_end(msg, hdr) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+ nl80211_mlme_mcgrp.id, gfp);
+ return;
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ nlmsg_free(msg);
+}
+
void
nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *peer,
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 5d69c56..f24a1fb 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -113,4 +113,8 @@
struct net_device *netdev, const u8 *bssid,
const u8 *replay_ctr, gfp_t gfp);
+void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, int index,
+ const u8 *bssid, bool preauth, gfp_t gfp);
+
#endif /* __NET_WIRELESS_NL80211_H */