mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-25 12:57:42 +02:00
c78b796325
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7425 3c298f89-4303-0410-b956-a3cf2f4a3e73
274 lines
10 KiB
Diff
274 lines
10 KiB
Diff
diff -ur madwifi.old/ath/if_ath.c madwifi.dev/ath/if_ath.c
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--- madwifi.old/ath/if_ath.c 2007-06-01 11:39:53.078678000 +0200
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+++ madwifi.dev/ath/if_ath.c 2007-06-01 11:50:32.819422992 +0200
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@@ -5604,6 +5604,7 @@
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u_int phyerr;
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u_int processed = 0, early_stop = 0;
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u_int rx_limit = dev->quota;
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+ u_int mic_fail = 0;
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/* Let the 802.11 layer know about the new noise floor */
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sc->sc_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
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@@ -5698,25 +5699,7 @@
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}
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if (rs->rs_status & HAL_RXERR_MIC) {
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sc->sc_stats.ast_rx_badmic++;
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- /*
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- * Do minimal work required to hand off
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- * the 802.11 header for notification.
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- */
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- /* XXX frag's and QoS frames */
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- len = rs->rs_datalen;
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- if (len >= sizeof (struct ieee80211_frame)) {
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- bus_dma_sync_single(sc->sc_bdev,
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- bf->bf_skbaddr, len,
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- BUS_DMA_FROMDEVICE);
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-#if 0
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-/* XXX revalidate MIC, lookup ni to find VAP */
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- ieee80211_notify_michael_failure(ic,
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- (struct ieee80211_frame *) skb->data,
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- sc->sc_splitmic ?
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- rs->rs_keyix - 32 : rs->rs_keyix
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- );
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-#endif
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- }
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+ mic_fail = 1;
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}
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/*
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* Reject error frames if we have no vaps that
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@@ -5774,8 +5757,9 @@
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/*
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* Finished monitor mode handling, now reject
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* error frames before passing to other vaps
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+ * Ignore MIC failures here, as we need to recheck them
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*/
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- if (rs->rs_status != 0) {
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+ if (rs->rs_status & ~(HAL_RXERR_MIC | HAL_RXERR_DECRYPT)) {
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dev_kfree_skb(skb);
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skb = NULL;
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goto rx_next;
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@@ -5806,6 +5790,20 @@
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sc->sc_hwmap[rs->rs_rate].ieeerate,
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rs->rs_rssi);
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+ /* MIC failure. Drop the packet in any case */
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+ if (mic_fail) {
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+ ni = ieee80211_find_rxnode(ic,
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+ (const struct ieee80211_frame_min *) skb->data);
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+ if (ni != NULL) {
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+ ieee80211_check_mic(ni, skb);
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+ ieee80211_unref_node(&ni);
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+ }
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+ dev_kfree_skb_any(skb);
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+ skb = NULL;
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+ mic_fail = 0;
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+ goto rx_next;
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+ }
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+
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/*
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* Locate the node for sender, track state, and then
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* pass the (referenced) node up to the 802.11 layer
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diff -ur madwifi.old/net80211/ieee80211_crypto_ccmp.c madwifi.dev/net80211/ieee80211_crypto_ccmp.c
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--- madwifi.old/net80211/ieee80211_crypto_ccmp.c 2007-05-30 03:41:18.000000000 +0200
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+++ madwifi.dev/net80211/ieee80211_crypto_ccmp.c 2007-06-01 11:45:05.000259080 +0200
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@@ -78,7 +78,7 @@
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static int ccmp_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t);
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static int ccmp_decap(struct ieee80211_key *, struct sk_buff *, int);
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static int ccmp_enmic(struct ieee80211_key *, struct sk_buff *, int);
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-static int ccmp_demic(struct ieee80211_key *, struct sk_buff *, int);
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+static int ccmp_demic(struct ieee80211_key *, struct sk_buff *, int, int);
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static const struct ieee80211_cipher ccmp = {
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.ic_name = "AES-CCM",
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@@ -298,7 +298,7 @@
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* Verify and strip MIC from the frame.
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*/
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static int
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-ccmp_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen)
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+ccmp_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen, int force)
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{
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return 1;
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}
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diff -ur madwifi.old/net80211/ieee80211_crypto.h madwifi.dev/net80211/ieee80211_crypto.h
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--- madwifi.old/net80211/ieee80211_crypto.h 2007-04-16 14:32:29.000000000 +0200
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+++ madwifi.dev/net80211/ieee80211_crypto.h 2007-06-01 11:45:05.000259080 +0200
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@@ -145,7 +145,7 @@
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int (*ic_encap)(struct ieee80211_key *, struct sk_buff *, u_int8_t);
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int (*ic_decap)(struct ieee80211_key *, struct sk_buff *, int);
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int (*ic_enmic)(struct ieee80211_key *, struct sk_buff *, int);
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- int (*ic_demic)(struct ieee80211_key *, struct sk_buff *, int);
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+ int (*ic_demic)(struct ieee80211_key *, struct sk_buff *, int, int);
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};
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extern const struct ieee80211_cipher ieee80211_cipher_none;
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@@ -163,10 +163,10 @@
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*/
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static __inline int
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ieee80211_crypto_demic(struct ieee80211vap *vap, struct ieee80211_key *k,
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- struct sk_buff *skb, int hdrlen)
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+ struct sk_buff *skb, int hdrlen, int force)
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{
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const struct ieee80211_cipher *cip = k->wk_cipher;
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- return (cip->ic_miclen > 0 ? cip->ic_demic(k, skb, hdrlen) : 1);
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+ return (cip->ic_miclen > 0 ? cip->ic_demic(k, skb, hdrlen, force) : 1);
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}
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/*
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diff -ur madwifi.old/net80211/ieee80211_crypto_none.c madwifi.dev/net80211/ieee80211_crypto_none.c
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--- madwifi.old/net80211/ieee80211_crypto_none.c 2006-09-20 10:45:13.000000000 +0200
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+++ madwifi.dev/net80211/ieee80211_crypto_none.c 2007-06-01 11:45:05.000259080 +0200
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@@ -52,7 +52,7 @@
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static int none_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t);
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static int none_decap(struct ieee80211_key *, struct sk_buff *, int);
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static int none_enmic(struct ieee80211_key *, struct sk_buff *, int);
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-static int none_demic(struct ieee80211_key *, struct sk_buff *, int);
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+static int none_demic(struct ieee80211_key *, struct sk_buff *, int, int);
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const struct ieee80211_cipher ieee80211_cipher_none = {
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.ic_name = "NONE",
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@@ -137,7 +137,7 @@
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}
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static int
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-none_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen)
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+none_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen, int force)
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{
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struct ieee80211vap *vap = k->wk_private;
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diff -ur madwifi.old/net80211/ieee80211_crypto_tkip.c madwifi.dev/net80211/ieee80211_crypto_tkip.c
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--- madwifi.old/net80211/ieee80211_crypto_tkip.c 2007-05-30 03:41:18.000000000 +0200
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+++ madwifi.dev/net80211/ieee80211_crypto_tkip.c 2007-06-01 11:45:05.001258928 +0200
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@@ -57,7 +57,7 @@
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static int tkip_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t);
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static int tkip_enmic(struct ieee80211_key *, struct sk_buff *, int);
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static int tkip_decap(struct ieee80211_key *, struct sk_buff *, int);
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-static int tkip_demic(struct ieee80211_key *, struct sk_buff *, int);
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+static int tkip_demic(struct ieee80211_key *, struct sk_buff *, int, int);
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static const struct ieee80211_cipher tkip = {
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.ic_name = "TKIP",
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@@ -339,7 +339,7 @@
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* Verify and strip MIC from the frame.
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*/
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static int
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-tkip_demic(struct ieee80211_key *k, struct sk_buff *skb0, int hdrlen)
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+tkip_demic(struct ieee80211_key *k, struct sk_buff *skb0, int hdrlen, int force)
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{
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struct tkip_ctx *ctx = k->wk_private;
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struct sk_buff *skb;
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@@ -355,7 +355,7 @@
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}
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wh = (struct ieee80211_frame *) skb0->data;
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/* NB: skb left pointing at last in chain */
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- if (k->wk_flags & IEEE80211_KEY_SWMIC) {
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+ if ((k->wk_flags & IEEE80211_KEY_SWMIC) || force) {
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struct ieee80211vap *vap = ctx->tc_vap;
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u8 mic[IEEE80211_WEP_MICLEN];
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u8 mic0[IEEE80211_WEP_MICLEN];
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diff -ur madwifi.old/net80211/ieee80211_crypto_wep.c madwifi.dev/net80211/ieee80211_crypto_wep.c
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--- madwifi.old/net80211/ieee80211_crypto_wep.c 2007-05-29 23:55:25.000000000 +0200
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+++ madwifi.dev/net80211/ieee80211_crypto_wep.c 2007-06-01 11:45:05.001258928 +0200
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@@ -54,7 +54,7 @@
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static int wep_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t);
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static int wep_decap(struct ieee80211_key *, struct sk_buff *, int);
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static int wep_enmic(struct ieee80211_key *, struct sk_buff *, int);
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-static int wep_demic(struct ieee80211_key *, struct sk_buff *, int);
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+static int wep_demic(struct ieee80211_key *, struct sk_buff *, int, int);
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static const struct ieee80211_cipher wep = {
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.ic_name = "WEP",
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@@ -244,7 +244,7 @@
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* Verify and strip MIC from the frame.
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*/
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static int
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-wep_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen)
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+wep_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen, int force)
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{
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return 1;
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}
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diff -ur madwifi.old/net80211/ieee80211_input.c madwifi.dev/net80211/ieee80211_input.c
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--- madwifi.old/net80211/ieee80211_input.c 2007-06-01 11:31:46.931583000 +0200
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+++ madwifi.dev/net80211/ieee80211_input.c 2007-06-01 11:45:05.003258624 +0200
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@@ -632,7 +632,7 @@
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* Next strip any MSDU crypto bits.
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*/
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if (key != NULL &&
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- !ieee80211_crypto_demic(vap, key, skb, hdrspace)) {
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+ !ieee80211_crypto_demic(vap, key, skb, hdrspace, 0)) {
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IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
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ni->ni_macaddr, "data", "%s", "demic error");
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IEEE80211_NODE_STAT(ni, rx_demicfail);
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@@ -3744,6 +3744,47 @@
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}
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#endif
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+/*
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+ * Process a frame w/ hw detected MIC failure.
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+ * The frame will be dropped in any case.
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+ */
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+void
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+ieee80211_check_mic(struct ieee80211_node *ni, struct sk_buff *skb)
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+{
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+ struct ieee80211vap *vap = ni->ni_vap;
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+
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+ struct ieee80211_frame *wh;
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+ struct ieee80211_key *key;
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+ int hdrspace;
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+ struct ieee80211com *ic = vap->iv_ic;
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+
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+ if (skb->len < sizeof(struct ieee80211_frame_min)) {
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+ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
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+ ni->ni_macaddr, NULL,
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+ "too short (1): len %u", skb->len);
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+ vap->iv_stats.is_rx_tooshort++;
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+ return;
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+ }
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+
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+ wh = (struct ieee80211_frame *)skb->data;
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+
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+ hdrspace = ieee80211_hdrspace(ic, wh);
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+ key = ieee80211_crypto_decap(ni, skb, hdrspace);
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+ if (key == NULL) {
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+ /* NB: stats+msgs handled in crypto_decap */
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+ IEEE80211_NODE_STAT(ni, rx_wepfail);
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+ return;
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+ }
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+
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+ if (!ieee80211_crypto_demic(vap, key, skb, hdrspace, 1)) {
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+ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
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+ ni->ni_macaddr, "data", "%s", "demic error");
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+ IEEE80211_NODE_STAT(ni, rx_demicfail);
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+ }
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+ return;
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+}
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+EXPORT_SYMBOL(ieee80211_check_mic);
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+
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#ifdef IEEE80211_DEBUG
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/*
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* Debugging support.
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diff -ur madwifi.old/net80211/ieee80211_linux.c madwifi.dev/net80211/ieee80211_linux.c
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--- madwifi.old/net80211/ieee80211_linux.c 2007-05-30 03:41:18.000000000 +0200
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+++ madwifi.dev/net80211/ieee80211_linux.c 2007-06-01 11:45:05.003258624 +0200
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@@ -311,8 +311,8 @@
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/* TODO: needed parameters: count, keyid, key type, src address, TSC */
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snprintf(buf, sizeof(buf), "%s(keyid=%d %scast addr=%s)", tag,
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- keyix, IEEE80211_IS_MULTICAST(wh->i_addr1) ? "broad" : "uni",
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- ether_sprintf(wh->i_addr1));
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+ keyix, IEEE80211_IS_MULTICAST(wh->i_addr2) ? "broad" : "uni",
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+ ether_sprintf(wh->i_addr2));
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memset(&wrqu, 0, sizeof(wrqu));
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wrqu.data.length = strlen(buf);
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wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
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diff -ur madwifi.old/net80211/ieee80211_proto.h madwifi.dev/net80211/ieee80211_proto.h
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--- madwifi.old/net80211/ieee80211_proto.h 2007-06-01 11:26:04.172691000 +0200
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+++ madwifi.dev/net80211/ieee80211_proto.h 2007-06-01 11:45:05.004258472 +0200
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@@ -91,6 +91,7 @@
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void ieee80211_set11gbasicrates(struct ieee80211_rateset *, enum ieee80211_phymode);
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enum ieee80211_phymode ieee80211_get11gbasicrates(struct ieee80211_rateset *);
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void ieee80211_send_pspoll(struct ieee80211_node *);
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+void ieee80211_check_mic(struct ieee80211_node *, struct sk_buff *);
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/*
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* Return the size of the 802.11 header for a management or data frame.
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