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Commit ee34af37 authored by James Ketrenos's avatar James Ketrenos Committed by Jeff Garzik
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[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: default avatarJames Ketrenos <jketreno@linux.intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent e0d369d1
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Showing with 129 additions and 64 deletions
include/net/ieee80211.h
View file @ ee34af37
......@@ -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;
......@@ -538,7 +563,7 @@ struct ieee80211_info_element {
u16 status;
*/
struct ieee80211_authentication {
struct ieee80211_auth {
struct ieee80211_hdr_3addr header;
__le16 algorithm;
__le16 transaction;
......@@ -546,6 +571,17 @@ struct ieee80211_authentication {
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 */
......
net/ieee80211/ieee80211_crypt_ccmp.c
View file @ ee34af37
......@@ -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))) {
......
net/ieee80211/ieee80211_crypt_tkip.c
View file @ ee34af37
......@@ -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),
......
net/ieee80211/ieee80211_rx.c
View file @ ee34af37
......@@ -87,7 +87,7 @@ static struct ieee80211_frag_entry *ieee80211_frag_cache_find(struct
/* Called only as a tasklet (software IRQ) */
static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee,
struct ieee80211_hdr *hdr)
struct ieee80211_hdr_4addr *hdr)
{
struct sk_buff *skb = NULL;
u16 sc;
......@@ -101,7 +101,7 @@ static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee,
if (frag == 0) {
/* Reserve enough space to fit maximum frame length */
skb = dev_alloc_skb(ieee->dev->mtu +
sizeof(struct ieee80211_hdr) +
sizeof(struct ieee80211_hdr_4addr) +
8 /* LLC */ +
2 /* alignment */ +
8 /* WEP */ + ETH_ALEN /* WDS */ );
......@@ -138,7 +138,7 @@ static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee,
/* Called only as a tasklet (software IRQ) */
static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
struct ieee80211_hdr *hdr)
struct ieee80211_hdr_4addr *hdr)
{
u16 sc;
unsigned int seq;
......@@ -176,7 +176,7 @@ ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
ieee->dev->name);
return 0;
/*
hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr *)
hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *)
skb->data);*/
}
......@@ -232,13 +232,13 @@ static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
{
struct net_device *dev = ieee->dev;
u16 fc, ethertype;
struct ieee80211_hdr *hdr;
struct ieee80211_hdr_3addr *hdr;
u8 *pos;
if (skb->len < 24)
return 0;
hdr = (struct ieee80211_hdr *)skb->data;
hdr = (struct ieee80211_hdr_3addr *)skb->data;
fc = le16_to_cpu(hdr->frame_ctl);
/* check that the frame is unicast frame to us */
......@@ -271,13 +271,13 @@ static inline int
ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
struct ieee80211_crypt_data *crypt)
{
struct ieee80211_hdr *hdr;
struct ieee80211_hdr_3addr *hdr;
int res, hdrlen;
if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
return 0;
hdr = (struct ieee80211_hdr *)skb->data;
hdr = (struct ieee80211_hdr_3addr *)skb->data;
hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
atomic_inc(&crypt->refcnt);
......@@ -303,13 +303,13 @@ ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee,
struct sk_buff *skb, int keyidx,
struct ieee80211_crypt_data *crypt)
{
struct ieee80211_hdr *hdr;
struct ieee80211_hdr_3addr *hdr;
int res, hdrlen;
if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
return 0;
hdr = (struct ieee80211_hdr *)skb->data;
hdr = (struct ieee80211_hdr_3addr *)skb->data;
hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
atomic_inc(&crypt->refcnt);
......@@ -332,7 +332,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
struct ieee80211_rx_stats *rx_stats)
{
struct net_device *dev = ieee->dev;
struct ieee80211_hdr *hdr;
struct ieee80211_hdr_4addr *hdr;
size_t hdrlen;
u16 fc, type, stype, sc;
struct net_device_stats *stats;
......@@ -352,7 +352,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
struct ieee80211_crypt_data *crypt = NULL;
int keyidx = 0;
hdr = (struct ieee80211_hdr *)skb->data;
hdr = (struct ieee80211_hdr_4addr *)skb->data;
stats = &ieee->stats;
if (skb->len < 10) {
......@@ -552,7 +552,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
(keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
goto rx_dropped;
hdr = (struct ieee80211_hdr *)skb->data;
hdr = (struct ieee80211_hdr_4addr *)skb->data;
/* skb: hdr + (possibly fragmented) plaintext payload */
// PR: FIXME: hostap has additional conditions in the "if" below:
......@@ -606,7 +606,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
/* this was the last fragment and the frame will be
* delivered, so remove skb from fragment cache */
skb = frag_skb;
hdr = (struct ieee80211_hdr *)skb->data;
hdr = (struct ieee80211_hdr_4addr *)skb->data;
ieee80211_frag_cache_invalidate(ieee, hdr);
}
......@@ -616,7 +616,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
goto rx_dropped;
hdr = (struct ieee80211_hdr *)skb->data;
hdr = (struct ieee80211_hdr_4addr *)skb->data;
if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep) {
if ( /*ieee->ieee802_1x && */
ieee80211_is_eapol_frame(ieee, skb)) {
......@@ -1148,7 +1148,7 @@ static inline void ieee80211_process_probe_response(struct ieee80211_device
}
void ieee80211_rx_mgt(struct ieee80211_device *ieee,
struct ieee80211_hdr *header,
struct ieee80211_hdr_4addr *header,
struct ieee80211_rx_stats *stats)
{
switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) {
......
net/ieee80211/ieee80211_tx.c
View file @ ee34af37
......@@ -227,14 +227,14 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ieee80211_device *ieee = netdev_priv(dev);
struct ieee80211_txb *txb = NULL;
struct ieee80211_hdr *frag_hdr;
struct ieee80211_hdr_3addr *frag_hdr;
int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size;
unsigned long flags;
struct net_device_stats *stats = &ieee->stats;
int ether_type, encrypt, host_encrypt;
int bytes, fc, hdr_len;
struct sk_buff *skb_frag;
struct ieee80211_hdr header = { /* Ensure zero initialized */
struct ieee80211_hdr_3addr header = { /* Ensure zero initialized */
.duration_id = 0,
.seq_ctl = 0
};
......@@ -352,7 +352,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
if (host_encrypt)
skb_reserve(skb_frag, crypt->ops->extra_prefix_len);
frag_hdr = (struct ieee80211_hdr *)skb_put(skb_frag, hdr_len);
frag_hdr =
(struct ieee80211_hdr_3addr *)skb_put(skb_frag, hdr_len);
memcpy(frag_hdr, &header, hdr_len);
/* If this is not the last fragment, then add the MOREFRAGS
......
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