[PATCH] ieee80211: Renamed ieee80211_hdr to ieee80211_hdr_3addr

tree e9c18b2c8e5ad446a4d213243c2dcf9fd1652a7b parent 4e97ad6ae7084a4f741e94e76c41c68bc7c5a76a author James Ketrenos <jketreno@linux.intel.com> 1124444315 -0500 committer James Ketrenos <jketreno@linux.intel.com> 1127312922 -0500 Renamed ieee80211_hdr to ieee80211_hdr_3addr and modified ieee80211_hdr to just contain the frame_ctrl and duration_id. Changed uses of ieee80211_hdr to ieee80211_hdr_4addr or ieee80211_hdr_3addr based on what was expected for that portion of code. NOTE: This requires changes to ipw2100, ipw2200, hostap, and atmel drivers. Signed-off-by: James Ketrenos <jketreno@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
git-mirror · Sep 22, 2005 · ee34af3 · ee34af3
1 parent e0d369d
commit ee34af3
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Showing 5 changed files with 129 additions and 64 deletions.
diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
@@ -33,33 +33,13 @@
    represents the 2304 bytes of real data, plus a possible 8 bytes of
    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
 
-#define IEEE80211_HLEN			30
-#define IEEE80211_FRAME_LEN		(IEEE80211_DATA_LEN + IEEE80211_HLEN)
-
-struct ieee80211_hdr {
-	__le16 frame_ctl;
-	__le16 duration_id;
-	u8 addr1[ETH_ALEN];
-	u8 addr2[ETH_ALEN];
-	u8 addr3[ETH_ALEN];
-	__le16 seq_ctl;
-	u8 addr4[ETH_ALEN];
-} __attribute__ ((packed));
-
-struct ieee80211_hdr_3addr {
-	__le16 frame_ctl;
-	__le16 duration_id;
-	u8 addr1[ETH_ALEN];
-	u8 addr2[ETH_ALEN];
-	u8 addr3[ETH_ALEN];
-	__le16 seq_ctl;
-} __attribute__ ((packed));
-
 #define IEEE80211_1ADDR_LEN 10
 #define IEEE80211_2ADDR_LEN 16
 #define IEEE80211_3ADDR_LEN 24
 #define IEEE80211_4ADDR_LEN 30
 #define IEEE80211_FCS_LEN    4
+#define IEEE80211_HLEN			(IEEE80211_4ADDR_LEN)
+#define IEEE80211_FRAME_LEN		(IEEE80211_DATA_LEN + IEEE80211_HLEN)
 
 #define MIN_FRAG_THRESHOLD     256U
 #define	MAX_FRAG_THRESHOLD     2346U
@@ -515,6 +495,51 @@ enum ieee80211_mfie {
 	MFIE_TYPE_GENERIC = 221,
 };
 
+/* Minimal header; can be used for passing 802.11 frames with sufficient
+ * information to determine what type of underlying data type is actually
+ * stored in the data. */
+struct ieee80211_hdr {
+	u16 frame_ctl;
+	u16 duration_id;
+	u8 payload[0];
+} __attribute__ ((packed));
+
+struct ieee80211_hdr_1addr {
+	u16 frame_ctl;
+	u16 duration_id;
+	u8 addr1[ETH_ALEN];
+	u8 payload[0];
+} __attribute__ ((packed));
+
+struct ieee80211_hdr_2addr {
+	u16 frame_ctl;
+	u16 duration_id;
+	u8 addr1[ETH_ALEN];
+	u8 addr2[ETH_ALEN];
+	u8 payload[0];
+} __attribute__ ((packed));
+
+struct ieee80211_hdr_3addr {
+	u16 frame_ctl;
+	u16 duration_id;
+	u8 addr1[ETH_ALEN];
+	u8 addr2[ETH_ALEN];
+	u8 addr3[ETH_ALEN];
+	u16 seq_ctl;
+	u8 payload[0];
+} __attribute__ ((packed));
+
+struct ieee80211_hdr_4addr {
+	u16 frame_ctl;
+	u16 duration_id;
+	u8 addr1[ETH_ALEN];
+	u8 addr2[ETH_ALEN];
+	u8 addr3[ETH_ALEN];
+	u16 seq_ctl;
+	u8 addr4[ETH_ALEN];
+	u8 payload[0];
+} __attribute__ ((packed));
+
 struct ieee80211_info_element {
 	u8 id;
 	u8 len;
@@ -538,14 +563,25 @@ struct ieee80211_info_element {
 	u16 status;
 */
 
-struct ieee80211_authentication {
+struct ieee80211_auth {
 	struct ieee80211_hdr_3addr header;
 	__le16 algorithm;
 	__le16 transaction;
 	__le16 status;
 	struct ieee80211_info_element info_element[0];
 } __attribute__ ((packed));
 
+struct ieee80211_disassoc {
+	struct ieee80211_hdr_3addr header;
+	u16 reason_code;
+	struct ieee80211_info_element info_element[0];
+} __attribute__ ((packed));
+
+struct ieee80211_probe_request {
+	struct ieee80211_hdr_3addr header;
+	struct ieee80211_info_element info_element[0];
+} __attribute__ ((packed));
+
 struct ieee80211_probe_response {
 	struct ieee80211_hdr_3addr header;
 	u32 time_stamp[2];
@@ -554,14 +590,25 @@ struct ieee80211_probe_response {
 	struct ieee80211_info_element info_element[0];
 } __attribute__ ((packed));
 
-struct ieee80211_assoc_request_frame {
+/* Alias beacon for probe_response */
+#define ieee80211_beacon ieee80211_probe_response
+
+struct ieee80211_assoc_request {
+	struct ieee80211_hdr_3addr header;
+	u16 capability;
+	u16 listen_interval;
+	struct ieee80211_info_element info_element[0];
+} __attribute__ ((packed));
+
+struct ieee80211_reassoc_request {
+	struct ieee80211_hdr_3addr header;
 	__le16 capability;
 	__le16 listen_interval;
 	u8 current_ap[ETH_ALEN];
 	struct ieee80211_info_element info_element[0];
 } __attribute__ ((packed));
 
-struct ieee80211_assoc_response_frame {
+struct ieee80211_assoc_response {
 	struct ieee80211_hdr_3addr header;
 	__le16 capability;
 	__le16 status;
@@ -572,7 +619,8 @@ struct ieee80211_assoc_response_frame {
 struct ieee80211_txb {
 	u8 nr_frags;
 	u8 encrypted;
-	u16 reserved;
+	u8 rts_included;
+	u8 reserved;
 	u16 frag_size;
 	u16 payload_size;
 	struct sk_buff *fragments[0];
@@ -803,6 +851,21 @@ extern inline int ieee80211_get_hdrlen(u16 fc)
 	return hdrlen;
 }
 
+extern inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
+{
+	switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
+	case IEEE80211_1ADDR_LEN:
+		return ((struct ieee80211_hdr_1addr *)hdr)->payload;
+	case IEEE80211_2ADDR_LEN:
+		return ((struct ieee80211_hdr_2addr *)hdr)->payload;
+	case IEEE80211_3ADDR_LEN:
+		return ((struct ieee80211_hdr_3addr *)hdr)->payload;
+	case IEEE80211_4ADDR_LEN:
+		return ((struct ieee80211_hdr_4addr *)hdr)->payload;
+	}
+
+}
+
 /* ieee80211.c */
 extern void free_ieee80211(struct net_device *dev);
 extern struct net_device *alloc_ieee80211(int sizeof_priv);
@@ -817,7 +880,7 @@ extern void ieee80211_txb_free(struct ieee80211_txb *);
 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 			struct ieee80211_rx_stats *rx_stats);
 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
-			     struct ieee80211_hdr *header,
+			     struct ieee80211_hdr_4addr *header,
 			     struct ieee80211_rx_stats *stats);
 
 /* ieee80211_wx.c */

diff --git a/net/ieee80211/ieee80211_crypt_ccmp.c b/net/ieee80211/ieee80211_crypt_ccmp.c
@@ -119,7 +119,7 @@ static inline void xor_block(u8 * b, u8 * a, size_t len)
 }
 
 static void ccmp_init_blocks(struct crypto_tfm *tfm,
-			     struct ieee80211_hdr *hdr,
+			     struct ieee80211_hdr_4addr *hdr,
 			     u8 * pn, size_t dlen, u8 * b0, u8 * auth, u8 * s0)
 {
 	u8 *pos, qc = 0;
@@ -196,7 +196,7 @@ static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	struct ieee80211_ccmp_data *key = priv;
 	int data_len, i, blocks, last, len;
 	u8 *pos, *mic;
-	struct ieee80211_hdr *hdr;
+	struct ieee80211_hdr_4addr *hdr;
 	u8 *b0 = key->tx_b0;
 	u8 *b = key->tx_b;
 	u8 *e = key->tx_e;
@@ -229,7 +229,7 @@ static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	*pos++ = key->tx_pn[1];
 	*pos++ = key->tx_pn[0];
 
-	hdr = (struct ieee80211_hdr *)skb->data;
+	hdr = (struct ieee80211_hdr_4addr *)skb->data;
 	ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len, b0, b, s0);
 
 	blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
@@ -258,7 +258,7 @@ static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 {
 	struct ieee80211_ccmp_data *key = priv;
 	u8 keyidx, *pos;
-	struct ieee80211_hdr *hdr;
+	struct ieee80211_hdr_4addr *hdr;
 	u8 *b0 = key->rx_b0;
 	u8 *b = key->rx_b;
 	u8 *a = key->rx_a;
@@ -272,7 +272,7 @@ static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 		return -1;
 	}
 
-	hdr = (struct ieee80211_hdr *)skb->data;
+	hdr = (struct ieee80211_hdr_4addr *)skb->data;
 	pos = skb->data + hdr_len;
 	keyidx = pos[3];
 	if (!(keyidx & (1 << 5))) {

diff --git a/net/ieee80211/ieee80211_crypt_tkip.c b/net/ieee80211/ieee80211_crypt_tkip.c
@@ -265,11 +265,11 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	struct ieee80211_tkip_data *tkey = priv;
 	int len;
 	u8 rc4key[16], *pos, *icv;
-	struct ieee80211_hdr *hdr;
+	struct ieee80211_hdr_4addr *hdr;
 	u32 crc;
 	struct scatterlist sg;
 
-	hdr = (struct ieee80211_hdr *)skb->data;
+	hdr = (struct ieee80211_hdr_4addr *)skb->data;
 
 	if (tkey->ieee->tkip_countermeasures) {
 		if (net_ratelimit()) {
@@ -334,13 +334,13 @@ static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
 	u8 keyidx, *pos;
 	u32 iv32;
 	u16 iv16;
-	struct ieee80211_hdr *hdr;
+	struct ieee80211_hdr_4addr *hdr;
 	u8 icv[4];
 	u32 crc;
 	struct scatterlist sg;
 	int plen;
 
-	hdr = (struct ieee80211_hdr *)skb->data;
+	hdr = (struct ieee80211_hdr_4addr *)skb->data;
 
 	if (tkey->ieee->tkip_countermeasures) {
 		if (net_ratelimit()) {
@@ -466,9 +466,9 @@ static int michael_mic(struct ieee80211_tkip_data *tkey, u8 * key, u8 * hdr,
 
 static void michael_mic_hdr(struct sk_buff *skb, u8 * hdr)
 {
-	struct ieee80211_hdr *hdr11;
+	struct ieee80211_hdr_4addr *hdr11;
 
-	hdr11 = (struct ieee80211_hdr *)skb->data;
+	hdr11 = (struct ieee80211_hdr_4addr *)skb->data;
 	switch (le16_to_cpu(hdr11->frame_ctl) &
 		(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
 	case IEEE80211_FCTL_TODS:
@@ -517,7 +517,8 @@ static int ieee80211_michael_mic_add(struct sk_buff *skb, int hdr_len,
 
 #if WIRELESS_EXT >= 18
 static void ieee80211_michael_mic_failure(struct net_device *dev,
-					  struct ieee80211_hdr *hdr, int keyidx)
+					  struct ieee80211_hdr_4addr *hdr,
+					  int keyidx)
 {
 	union iwreq_data wrqu;
 	struct iw_michaelmicfailure ev;
@@ -537,7 +538,8 @@ static void ieee80211_michael_mic_failure(struct net_device *dev,
 }
 #elif WIRELESS_EXT >= 15
 static void ieee80211_michael_mic_failure(struct net_device *dev,
-					  struct ieee80211_hdr *hdr, int keyidx)
+					  struct ieee80211_hdr_4addr *hdr,
+					  int keyidx)
 {
 	union iwreq_data wrqu;
 	char buf[128];
@@ -551,9 +553,8 @@ static void ieee80211_michael_mic_failure(struct net_device *dev,
 	wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
 }
 #else				/* WIRELESS_EXT >= 15 */
-static inline void ieee80211_michael_mic_failure(struct net_device *dev,
-						 struct ieee80211_hdr *hdr,
-						 int keyidx)
+static inline void ieee80211_michael_mic_failure(struct net_device *dev, struct ieee80211_hdr_4addr
+						 *hdr, int keyidx)
 {
 }
 #endif				/* WIRELESS_EXT >= 15 */
@@ -572,8 +573,8 @@ static int ieee80211_michael_mic_verify(struct sk_buff *skb, int keyidx,
 			skb->data + hdr_len, skb->len - 8 - hdr_len, mic))
 		return -1;
 	if (memcmp(mic, skb->data + skb->len - 8, 8) != 0) {
-		struct ieee80211_hdr *hdr;
-		hdr = (struct ieee80211_hdr *)skb->data;
+		struct ieee80211_hdr_4addr *hdr;
+		hdr = (struct ieee80211_hdr_4addr *)skb->data;
 		printk(KERN_DEBUG "%s: Michael MIC verification failed for "
 		       "MSDU from " MAC_FMT " keyidx=%d\n",
 		       skb->dev ? skb->dev->name : "N/A", MAC_ARG(hdr->addr2),