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-rw-r--r--net/mac80211/event.c17
-rw-r--r--net/mac80211/ieee80211_i.h2
-rw-r--r--net/mac80211/rx.c2
-rw-r--r--net/mac80211/wpa.c2
-rw-r--r--net/wireless/mlme.c10
-rw-r--r--net/wireless/nl80211.c40
-rw-r--r--net/wireless/nl80211.h5
7 files changed, 67 insertions, 11 deletions
diff --git a/net/mac80211/event.c b/net/mac80211/event.c
index 0d95561c0ee0..f288d01a6344 100644
--- a/net/mac80211/event.c
+++ b/net/mac80211/event.c
@@ -12,12 +12,12 @@
#include "ieee80211_i.h"
/*
- * indicate a failed Michael MIC to userspace; the passed packet
- * (in the variable hdr) must be long enough to extract the TKIP
- * fields like TSC
+ * Indicate a failed Michael MIC to userspace. If the caller knows the TSC of
+ * the frame that generated the MIC failure (i.e., if it was provided by the
+ * driver or is still in the frame), it should provide that information.
*/
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
- struct ieee80211_hdr *hdr)
+ struct ieee80211_hdr *hdr, const u8 *tsc)
{
union iwreq_data wrqu;
char *buf = kmalloc(128, GFP_ATOMIC);
@@ -34,8 +34,9 @@ void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int ke
kfree(buf);
}
- /*
- * TODO: re-add support for sending MIC failure indication
- * with all info via nl80211
- */
+ cfg80211_michael_mic_failure(sdata->dev, hdr->addr2,
+ (hdr->addr1[0] & 0x01) ?
+ NL80211_KEYTYPE_GROUP :
+ NL80211_KEYTYPE_PAIRWISE,
+ keyidx, tsc);
}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index e6ed78cb16b3..312347d102c8 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1060,7 +1060,7 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble);
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
- struct ieee80211_hdr *hdr);
+ struct ieee80211_hdr *hdr, const u8 *tsc);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
int encrypt);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 5fa7aedd90ed..19c4b4589fee 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1932,7 +1932,7 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
!ieee80211_is_auth(hdr->frame_control))
goto ignore;
- mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr);
+ mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr, NULL);
ignore:
dev_kfree_skb(rx->skb);
rx->skb = NULL;
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 4f8bfea278f2..dcfae8884b86 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -122,7 +122,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
return RX_DROP_UNUSABLE;
mac80211_ev_michael_mic_failure(rx->sdata, rx->key->conf.keyidx,
- (void *) skb->data);
+ (void *) skb->data, NULL);
return RX_DROP_UNUSABLE;
}
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 33ff7cca496b..1407244a647e 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -43,3 +43,13 @@ void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len)
nl80211_send_disassoc(rdev, dev, buf, len);
}
EXPORT_SYMBOL(cfg80211_send_disassoc);
+
+void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
+ enum nl80211_key_type key_type, int key_id,
+ const u8 *tsc)
+{
+ struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc);
+}
+EXPORT_SYMBOL(cfg80211_michael_mic_failure);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 195424eee77d..1394115cde95 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)
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 55686fc264f0..e4b92cccd157 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -23,5 +23,10 @@ extern void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
extern void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len);
+extern 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);
#endif /* __NET_WIRELESS_NL80211_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-24 21:51:19 +0000