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cfg80211/nl80211: Add PMKSA caching candidate event

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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>
This commit is contained in:
Jouni Malinen
2011-09-16 18:56:23 +03:00
committed by John W. Linville
parent 2981808269
commit c9df56b48e
5 changed files with 105 additions and 0 deletions
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11
net/wireless/mlme.c
View File

@@ -1095,3 +1095,14 @@ void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
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);

46
net/wireless/nl80211.c
View File

@@ -7270,6 +7270,52 @@ void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
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,

4
net/wireless/nl80211.h
View File

@@ -113,4 +113,8 @@ void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
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 */