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authorJouni Malinen <j@w1.fi>2009-03-27 21:59:49 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-04-22 16:54:28 -0400
commita3b8b0569fbef725597f05278ec58083321f6e9d (patch)
treecb3beb05c841a9564a3fdd44d540570c7b89c9f6 /net/wireless/nl80211.c
parent53b46b8444f600cc1744521ea096ea0c5d494dd0 (diff)
nl80211: Add Michael MIC failure event
Define a new nl80211 event, NL80211_CMD_MICHAEL_MIC_FAILURE, to be used to notify user space about locally detected Michael MIC failures. This matches with the MLME-MICHAELMICFAILURE.indication() primitive. Since we do not actually have TSC in the skb anymore when mac80211_ev_michael_mic_failure() is called, that function is changed to take in the TSC as an optional parameter instead of as a requirement to include the TSC after the hdr field (which we did not really follow). For now, TSC is not included in the events from mac80211, but it could be added at some point. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/nl80211.c')
-rw-r--r--net/wireless/nl80211.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 195424eee77..1394115cde9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3430,6 +3430,46 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
NL80211_CMD_DISASSOCIATE);
}
+void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, const u8 *addr,
+ enum nl80211_key_type key_type, int key_id,
+ const u8 *tsc)
+{
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
+ 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);
+ if (addr)
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+ NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
+ NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
+ if (tsc)
+ NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
+
+ if (genlmsg_end(msg, hdr) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, GFP_KERNEL);
+ return;
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ nlmsg_free(msg);
+}
+
/* initialisation/exit functions */
int nl80211_init(void)