From 0cf6590d84a4da6b2ec44ddf2d5f5b5fcecae743 Mon Sep 17 00:00:00 2001
From: damien <damien@openbsd.org>
Date: Tue, 12 Aug 2008 18:01:41 +0000
Subject: [PATCH] extend the ic_nw_keys[] array to 6 elements. indices 0-3 will
 be used for group data keys while indices 4-5 will be used for integrity
 group keys. add a ic_rsngroupmgmtcipher field too.

---
 sys/net80211/ieee80211_crypto.c | 51 +++++++++++++++++----------------
 sys/net80211/ieee80211_var.h    | 10 +++++--
 2 files changed, 33 insertions(+), 28 deletions(-)

diff --git a/sys/net80211/ieee80211_crypto.c b/sys/net80211/ieee80211_crypto.c
index bbc50904b09..688190082e5 100644
--- a/sys/net80211/ieee80211_crypto.c
+++ b/sys/net80211/ieee80211_crypto.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ieee80211_crypto.c,v 1.46 2008/08/12 16:14:05 damien Exp $	*/
+/*	$OpenBSD: ieee80211_crypto.c,v 1.47 2008/08/12 18:01:41 damien Exp $	*/
 
 /*-
  * Copyright (c) 2008 Damien Bergamini <damien.bergamini@free.fr>
@@ -79,14 +79,35 @@ ieee80211_crypto_detach(struct ifnet *ifp)
 	int i;
 
 	/* clear all keys from memory */
-	for (i = 0; i < IEEE80211_WEP_NKID; i++) {
-		if (ic->ic_nw_keys[i].k_cipher != IEEE80211_CIPHER_NONE)
-			(*ic->ic_delete_key)(ic, NULL, &ic->ic_nw_keys[i]);
-		memset(&ic->ic_nw_keys[i], 0, sizeof(struct ieee80211_key));
+	for (i = 0; i < IEEE80211_GROUP_NKID; i++) {
+		struct ieee80211_key *k = &ic->ic_nw_keys[i];
+		if (k->k_cipher != IEEE80211_CIPHER_NONE)
+			(*ic->ic_delete_key)(ic, NULL, k);
+		memset(k, 0, sizeof(*k));
 	}
 	memset(ic->ic_psk, 0, IEEE80211_PMK_LEN);
 }
 
+/*
+ * Return the length in bytes of a cipher suite key (see Table 60).
+ */
+int
+ieee80211_cipher_keylen(enum ieee80211_cipher cipher)
+{
+	switch (cipher) {
+	case IEEE80211_CIPHER_WEP40:
+		return 5;
+	case IEEE80211_CIPHER_TKIP:
+		return 32;
+	case IEEE80211_CIPHER_CCMP:
+		return 16;
+	case IEEE80211_CIPHER_WEP104:
+		return 13;
+	default:	/* unknown cipher */
+		return 0;
+	}
+}
+
 int
 ieee80211_set_key(struct ieee80211com *ic, struct ieee80211_node *ni,
     struct ieee80211_key *k)
@@ -449,23 +470,3 @@ ieee80211_eapol_key_decrypt(struct ieee80211_eapol_key *key,
 
 	return 1;	/* unknown Key Descriptor Version */
 }
-
-/*
- * Return the length in bytes of a cipher suite key (see Table 60).
- */
-int
-ieee80211_cipher_keylen(enum ieee80211_cipher cipher)
-{
-	switch (cipher) {
-	case IEEE80211_CIPHER_WEP40:
-		return 5;
-	case IEEE80211_CIPHER_TKIP:
-		return 32;
-	case IEEE80211_CIPHER_CCMP:
-		return 16;
-	case IEEE80211_CIPHER_WEP104:
-		return 13;
-	default:	/* unknown cipher */
-		return 0;
-	}
-}
diff --git a/sys/net80211/ieee80211_var.h b/sys/net80211/ieee80211_var.h
index c50d8c6257d..61281b7cdea 100644
--- a/sys/net80211/ieee80211_var.h
+++ b/sys/net80211/ieee80211_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ieee80211_var.h,v 1.43 2008/08/12 17:53:13 damien Exp $	*/
+/*	$OpenBSD: ieee80211_var.h,v 1.44 2008/08/12 18:01:41 damien Exp $	*/
 /*	$NetBSD: ieee80211_var.h,v 1.7 2004/05/06 03:07:10 dyoung Exp $	*/
 
 /*-
@@ -170,6 +170,8 @@ struct ieee80211_rxinfo {
 #define	IEEE80211_SCAN_REQUEST	0x2
 #define	IEEE80211_SCAN_RESUME	0x4
 
+#define IEEE80211_GROUP_NKID	6
+
 struct ieee80211com {
 	struct arpcom		ic_ac;
 	LIST_ENTRY(ieee80211com) ic_list;	/* chain of all ieee80211com */
@@ -248,9 +250,10 @@ struct ieee80211com {
 	u_int8_t		ic_des_essid[IEEE80211_NWID_LEN];
 	struct ieee80211_channel *ic_des_chan;	/* desired channel */
 	u_int8_t		ic_des_bssid[IEEE80211_ADDR_LEN];
-	struct ieee80211_key	ic_nw_keys[IEEE80211_WEP_NKID];
-	int			ic_def_txkey;	/* default tx key index */
+	struct ieee80211_key	ic_nw_keys[IEEE80211_GROUP_NKID];
+	int			ic_def_txkey;	/* group data key index */
 #define ic_wep_txkey	ic_def_txkey
+	int			ic_igtk_kid;	/* IGTK key index */
 	u_int32_t		ic_iv;		/* initial vector for wep */
 	struct ieee80211_stats	ic_stats;	/* statistics */
 	struct timeval		ic_last_merge_print;	/* for rate-limiting
@@ -269,6 +272,7 @@ struct ieee80211com {
 	u_int			ic_rsnakms;
 	u_int			ic_rsnciphers;
 	enum ieee80211_cipher	ic_rsngroupcipher;
+	enum ieee80211_cipher	ic_rsngroupmgmtcipher;
 
 	u_int8_t		*ic_tim_bitmap;
 	u_int			ic_tim_len;
-- 
2.20.1