diff options
Diffstat (limited to 'package/madwifi/patches/309-micfail_detect.patch')
| -rw-r--r-- | package/madwifi/patches/309-micfail_detect.patch | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/package/madwifi/patches/309-micfail_detect.patch b/package/madwifi/patches/309-micfail_detect.patch new file mode 100644 index 0000000000..2ab07bbedf --- /dev/null +++ b/package/madwifi/patches/309-micfail_detect.patch @@ -0,0 +1,273 @@ +diff -urN madwifi-ng-refcount-r2313-20070505.old/ath/if_ath.c madwifi-ng-refcount-r2313-20070505.dev/ath/if_ath.c +--- madwifi-ng-refcount-r2313-20070505.old/ath/if_ath.c 2007-05-13 18:17:56.785936264 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/ath/if_ath.c 2007-05-13 18:17:56.878922128 +0200 +@@ -5640,6 +5640,7 @@ + u_int phyerr; + int processed = 0, early_stop = 0; + int rx_limit = dev->quota; ++ int mic_fail = 0; + + /* Let the 802.11 layer know about the new noise floor */ + ic->ic_channoise = sc->sc_channoise; +@@ -5734,32 +5735,16 @@ + } + if (ds->ds_rxstat.rs_status & HAL_RXERR_MIC) { + sc->sc_stats.ast_rx_badmic++; +- /* +- * Do minimal work required to hand off +- * the 802.11 header for notification. +- */ +- /* XXX frag's and QoS frames */ +- len = ds->ds_rxstat.rs_datalen; +- if (len >= sizeof (struct ieee80211_frame)) { +- bus_dma_sync_single(sc->sc_bdev, +- bf->bf_skbaddr, len, +- BUS_DMA_FROMDEVICE); +-#if 0 +-/* XXX revalidate MIC, lookup ni to find VAP */ +- ieee80211_notify_michael_failure(ic, +- (struct ieee80211_frame *) skb->data, +- sc->sc_splitmic ? +- ds->ds_rxstat.rs_keyix - 32 : +- ds->ds_rxstat.rs_keyix +- ); +-#endif +- } ++ mic_fail = 1; + } + /* + * Reject error frames if we have no vaps that + * are operating in monitor mode. + */ +- if(sc->sc_nmonvaps == 0) goto rx_next; ++ if ((ds->ds_rxstat.rs_status & ~HAL_RXERR_MIC) && ++ ((ds->ds_rxstat.rs_status &~ HAL_RXERR_DECRYPT) || ++ (sc->sc_ic.ic_opmode != IEEE80211_M_MONITOR))) ++ goto rx_next; + } + rx_accept: + /* +@@ -5843,6 +5828,20 @@ + ds->ds_rxstat.rs_rssi); + } + ++ /* MIC failure. Drop the packet in any case */ ++ if (mic_fail) { ++ ni = ieee80211_find_rxnode(ic, ++ (const struct ieee80211_frame_min *) skb->data); ++ if (ni != NULL) { ++ ieee80211_check_mic(ni, skb); ++ ieee80211_unref_node(&ni); ++ } ++ dev_kfree_skb_any(skb); ++ skb = NULL; ++ mic_fail = 0; ++ goto rx_next; ++ } ++ + /* + * Locate the node for sender, track state, and then + * pass the (referenced) node up to the 802.11 layer +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_ccmp.c madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_ccmp.c +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_ccmp.c 2007-04-13 07:53:25.000000000 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_ccmp.c 2007-05-13 18:17:56.879921976 +0200 +@@ -78,7 +78,7 @@ + static int ccmp_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t); + static int ccmp_decap(struct ieee80211_key *, struct sk_buff *, int); + static int ccmp_enmic(struct ieee80211_key *, struct sk_buff *, int); +-static int ccmp_demic(struct ieee80211_key *, struct sk_buff *, int); ++static int ccmp_demic(struct ieee80211_key *, struct sk_buff *, int, int); + + static const struct ieee80211_cipher ccmp = { + .ic_name = "AES-CCM", +@@ -298,7 +298,7 @@ + * Verify and strip MIC from the frame. + */ + static int +-ccmp_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen) ++ccmp_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen, int force) + { + return 1; + } +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto.h madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto.h +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto.h 2007-04-25 22:29:55.000000000 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto.h 2007-05-13 18:17:56.880921824 +0200 +@@ -145,7 +145,7 @@ + int (*ic_encap)(struct ieee80211_key *, struct sk_buff *, u_int8_t); + int (*ic_decap)(struct ieee80211_key *, struct sk_buff *, int); + int (*ic_enmic)(struct ieee80211_key *, struct sk_buff *, int); +- int (*ic_demic)(struct ieee80211_key *, struct sk_buff *, int); ++ int (*ic_demic)(struct ieee80211_key *, struct sk_buff *, int, int); + }; + extern const struct ieee80211_cipher ieee80211_cipher_none; + +@@ -163,10 +163,10 @@ + */ + static __inline int + ieee80211_crypto_demic(struct ieee80211vap *vap, struct ieee80211_key *k, +- struct sk_buff *skb, int hdrlen) ++ struct sk_buff *skb, int hdrlen, int force) + { + const struct ieee80211_cipher *cip = k->wk_cipher; +- return (cip->ic_miclen > 0 ? cip->ic_demic(k, skb, hdrlen) : 1); ++ return (cip->ic_miclen > 0 ? cip->ic_demic(k, skb, hdrlen, force) : 1); + } + + /* +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_none.c madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_none.c +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_none.c 2006-09-20 10:45:13.000000000 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_none.c 2007-05-13 18:17:56.880921824 +0200 +@@ -52,7 +52,7 @@ + static int none_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t); + static int none_decap(struct ieee80211_key *, struct sk_buff *, int); + static int none_enmic(struct ieee80211_key *, struct sk_buff *, int); +-static int none_demic(struct ieee80211_key *, struct sk_buff *, int); ++static int none_demic(struct ieee80211_key *, struct sk_buff *, int, int); + + const struct ieee80211_cipher ieee80211_cipher_none = { + .ic_name = "NONE", +@@ -137,7 +137,7 @@ + } + + static int +-none_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen) ++none_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen, int force) + { + struct ieee80211vap *vap = k->wk_private; + +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_tkip.c madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_tkip.c +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_tkip.c 2007-01-30 04:51:52.000000000 +0100 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_tkip.c 2007-05-13 18:17:56.880921824 +0200 +@@ -57,7 +57,7 @@ + static int tkip_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t); + static int tkip_enmic(struct ieee80211_key *, struct sk_buff *, int); + static int tkip_decap(struct ieee80211_key *, struct sk_buff *, int); +-static int tkip_demic(struct ieee80211_key *, struct sk_buff *, int); ++static int tkip_demic(struct ieee80211_key *, struct sk_buff *, int, int); + + static const struct ieee80211_cipher tkip = { + .ic_name = "TKIP", +@@ -339,7 +339,7 @@ + * Verify and strip MIC from the frame. + */ + static int +-tkip_demic(struct ieee80211_key *k, struct sk_buff *skb0, int hdrlen) ++tkip_demic(struct ieee80211_key *k, struct sk_buff *skb0, int hdrlen, int force) + { + struct tkip_ctx *ctx = k->wk_private; + struct sk_buff *skb; +@@ -355,7 +355,7 @@ + } + wh = (struct ieee80211_frame *) skb0->data; + /* NB: skb left pointing at last in chain */ +- if (k->wk_flags & IEEE80211_KEY_SWMIC) { ++ if ((k->wk_flags & IEEE80211_KEY_SWMIC) || force) { + struct ieee80211vap *vap = ctx->tc_vap; + u8 mic[IEEE80211_WEP_MICLEN]; + u8 mic0[IEEE80211_WEP_MICLEN]; +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_wep.c madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_wep.c +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_crypto_wep.c 2006-09-20 10:45:13.000000000 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_crypto_wep.c 2007-05-13 18:17:56.881921672 +0200 +@@ -54,7 +54,7 @@ + static int wep_encap(struct ieee80211_key *, struct sk_buff *, u_int8_t); + static int wep_decap(struct ieee80211_key *, struct sk_buff *, int); + static int wep_enmic(struct ieee80211_key *, struct sk_buff *, int); +-static int wep_demic(struct ieee80211_key *, struct sk_buff *, int); ++static int wep_demic(struct ieee80211_key *, struct sk_buff *, int, int); + + static const struct ieee80211_cipher wep = { + .ic_name = "WEP", +@@ -244,7 +244,7 @@ + * Verify and strip MIC from the frame. + */ + static int +-wep_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen) ++wep_demic(struct ieee80211_key *k, struct sk_buff *skb, int hdrlen, int force) + { + return 1; + } +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_input.c madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_input.c +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_input.c 2007-05-13 18:17:56.786936112 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_input.c 2007-05-13 18:17:56.883921368 +0200 +@@ -654,7 +654,7 @@ + * Next strip any MSDU crypto bits. + */ + if (key != NULL && +- !ieee80211_crypto_demic(vap, key, skb, hdrspace)) { ++ !ieee80211_crypto_demic(vap, key, skb, hdrspace, 0)) { + IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, + ni->ni_macaddr, "data", "%s", "demic error"); + IEEE80211_NODE_STAT(ni, rx_demicfail); +@@ -3734,6 +3734,47 @@ + } + #endif + ++/* ++ * Process a frame w/ hw detected MIC failure. ++ * The frame will be dropped in any case. ++ */ ++void ++ieee80211_check_mic(struct ieee80211_node *ni, struct sk_buff *skb) ++{ ++ struct ieee80211vap *vap = ni->ni_vap; ++ ++ struct ieee80211_frame *wh; ++ struct ieee80211_key *key; ++ int hdrspace; ++ struct ieee80211com *ic = vap->iv_ic; ++ ++ if (skb->len < sizeof(struct ieee80211_frame_min)) { ++ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY, ++ ni->ni_macaddr, NULL, ++ "too short (1): len %u", skb->len); ++ vap->iv_stats.is_rx_tooshort++; ++ return; ++ } ++ ++ wh = (struct ieee80211_frame *)skb->data; ++ ++ hdrspace = ieee80211_hdrspace(ic, wh); ++ key = ieee80211_crypto_decap(ni, skb, hdrspace); ++ if (key == NULL) { ++ /* NB: stats+msgs handled in crypto_decap */ ++ IEEE80211_NODE_STAT(ni, rx_wepfail); ++ return; ++ } ++ ++ if (!ieee80211_crypto_demic(vap, key, skb, hdrspace, 1)) { ++ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, ++ ni->ni_macaddr, "data", "%s", "demic error"); ++ IEEE80211_NODE_STAT(ni, rx_demicfail); ++ } ++ return; ++} ++EXPORT_SYMBOL(ieee80211_check_mic); ++ + #ifdef IEEE80211_DEBUG + /* + * Debugging support. +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_linux.c madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_linux.c +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_linux.c 2007-04-25 22:29:55.000000000 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_linux.c 2007-05-13 18:17:56.883921368 +0200 +@@ -309,8 +309,8 @@ + + /* TODO: needed parameters: count, keyid, key type, src address, TSC */ + snprintf(buf, sizeof(buf), "%s(keyid=%d %scast addr=%s)", tag, +- keyix, IEEE80211_IS_MULTICAST(wh->i_addr1) ? "broad" : "uni", +- ether_sprintf(wh->i_addr1)); ++ keyix, IEEE80211_IS_MULTICAST(wh->i_addr2) ? "broad" : "uni", ++ ether_sprintf(wh->i_addr2)); + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = strlen(buf); + wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); +diff -urN madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_proto.h madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_proto.h +--- madwifi-ng-refcount-r2313-20070505.old/net80211/ieee80211_proto.h 2007-05-13 18:17:56.579967576 +0200 ++++ madwifi-ng-refcount-r2313-20070505.dev/net80211/ieee80211_proto.h 2007-05-13 18:17:56.884921216 +0200 +@@ -91,6 +91,7 @@ + void ieee80211_set11gbasicrates(struct ieee80211_rateset *, enum ieee80211_phymode); + enum ieee80211_phymode ieee80211_get11gbasicrates(struct ieee80211_rateset *); + void ieee80211_send_pspoll(struct ieee80211_node *); ++void ieee80211_check_mic(struct ieee80211_node *, struct sk_buff *); + + /* + * Return the size of the 802.11 header for a management or data frame. |