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-rw-r--r--net/mac80211/Makefile1
-rw-r--r--net/mac80211/event.c42
-rw-r--r--net/mac80211/ieee80211_i.h2
-rw-r--r--net/mac80211/rx.c41
-rw-r--r--net/mac80211/wpa.c34
5 files changed, 57 insertions, 63 deletions
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 122b23eb15d1..793733835628 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -22,4 +22,5 @@ mac80211-objs := \
tx.o \
key.o \
util.o \
+ event.o \
$(mac80211-objs-y)
diff --git a/net/mac80211/event.c b/net/mac80211/event.c
new file mode 100644
index 000000000000..68a526cb7623
--- /dev/null
+++ b/net/mac80211/event.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * mac80211 - events
+ */
+
+#include <linux/netdevice.h>
+#include <net/iw_handler.h>
+#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
+ */
+void mac80211_ev_michael_mic_failure(struct net_device *dev, int keyidx,
+ struct ieee80211_hdr *hdr)
+{
+ union iwreq_data wrqu;
+ char *buf = kmalloc(128, GFP_ATOMIC);
+
+ if (buf) {
+ /* TODO: needed parameters: count, key type, TSC */
+ sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+ "keyid=%d %scast addr=" MAC_FMT ")",
+ keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
+ MAC_ARG(hdr->addr2));
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = strlen(buf);
+ wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+ kfree(buf);
+ }
+
+ /*
+ * TODO: re-add support for sending MIC failure indication
+ * with all info via nl80211
+ */
+}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c771b7a76959..9c5fd861eb72 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -823,5 +823,7 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len);
int ieee80211_is_eapol(const struct sk_buff *skb);
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 net_device *dev, int keyidx,
+ struct ieee80211_hdr *hdr);
#endif /* IEEE80211_I_H */
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 08ca066246b9..5a66269d9435 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -13,7 +13,6 @@
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
-#include <net/iw_handler.h>
#include <net/mac80211.h>
#include <net/ieee80211_radiotap.h>
@@ -1206,20 +1205,17 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
}
if ((rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) &&
- rx->sdata->type == IEEE80211_IF_TYPE_AP) {
- keyidx = ieee80211_wep_get_keyidx(rx->skb);
+ rx->sdata->type == IEEE80211_IF_TYPE_AP && keyidx) {
/* AP with Pairwise keys support should never receive Michael
* MIC errors for non-zero keyidx because these are reserved
* for group keys and only the AP is sending real multicast
* frames in BSS. */
- if (keyidx) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: ignored Michael MIC "
- "error for a frame with non-zero keyidx"
- " (%d) (src " MAC_FMT ")\n", dev->name,
- keyidx, MAC_ARG(hdr->addr2));
- goto ignore;
- }
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: ignored Michael MIC error for "
+ "a frame with non-zero keyidx (%d)"
+ " (src " MAC_FMT ")\n", dev->name, keyidx,
+ MAC_ARG(hdr->addr2));
+ goto ignore;
}
if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
@@ -1233,32 +1229,11 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
goto ignore;
}
- do {
- union iwreq_data wrqu;
- char *buf = kmalloc(128, GFP_ATOMIC);
- if (!buf)
- break;
-
- /* TODO: needed parameters: count, key type, TSC */
- sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
- "keyid=%d %scast addr=" MAC_FMT ")",
- keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
- MAC_ARG(hdr->addr2));
- memset(&wrqu, 0, sizeof(wrqu));
- wrqu.data.length = strlen(buf);
- wireless_send_event(rx->dev, IWEVCUSTOM, &wrqu, buf);
- kfree(buf);
- } while (0);
-
/* TODO: consider verifying the MIC error report with software
* implementation if we get too many spurious reports from the
* hardware. */
- if (!rx->local->apdev)
- goto ignore;
- ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
- ieee80211_msg_michael_mic_failure);
- return;
+ mac80211_ev_michael_mic_failure(rx->dev, keyidx, hdr);
ignore:
dev_kfree_skb(rx->skb);
rx->skb = NULL;
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index f5723ea15aae..742b5585d1b7 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -11,10 +11,8 @@
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/compiler.h>
-#include <net/iw_handler.h>
-
#include <net/mac80211.h>
-#include "ieee80211_common.h"
+
#include "ieee80211_i.h"
#include "michael.h"
#include "tkip.h"
@@ -181,33 +179,9 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from "
MAC_FMT "\n", rx->dev->name, MAC_ARG(sa));
- do {
- struct ieee80211_hdr *hdr;
- union iwreq_data wrqu;
- char *buf = kmalloc(128, GFP_ATOMIC);
- if (!buf)
- break;
-
- /* TODO: needed parameters: count, key type, TSC */
- hdr = (struct ieee80211_hdr *) skb->data;
- sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
- "keyid=%d %scast addr=" MAC_FMT ")",
- rx->key->keyidx,
- hdr->addr1[0] & 0x01 ? "broad" : "uni",
- MAC_ARG(hdr->addr2));
- memset(&wrqu, 0, sizeof(wrqu));
- wrqu.data.length = strlen(buf);
- wireless_send_event(rx->dev, IWEVCUSTOM, &wrqu, buf);
- kfree(buf);
- } while (0);
-
- if (!rx->local->apdev)
- return TXRX_DROP;
-
- ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
- ieee80211_msg_michael_mic_failure);
-
- return TXRX_QUEUED;
+ mac80211_ev_michael_mic_failure(rx->dev, rx->key->keyidx,
+ (void *) skb->data);
+ return TXRX_DROP;
}
remove_mic:
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 13:27:55 +0000