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mac80211: split ieee80211_txrx_data

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Split it into ieee80211_tx_data and ieee80211_rx_data to clarify
usage/flag usage and remove the stupid union thing.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2008-02-25 16:27:43 +01:00
committed by John W. Linville
parent 7495883bdd
commit 5cf121c3cd
8 changed files with 320 additions and 311 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
net/mac80211/wpa.c
View File

@ -71,7 +71,7 @@ static int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da,
ieee80211_tx_result
ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
{
u8 *data, *sa, *da, *key, *mic, qos_tid;
size_t data_len;
@ -90,7 +90,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
return TX_DROP;
if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
!(tx->flags & IEEE80211_TXRXD_FRAGMENTED) &&
!(tx->flags & IEEE80211_TX_FRAGMENTED) &&
!(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) &&
!wpa_test) {
/* hwaccel - with no need for preallocated room for Michael MIC
@ -124,7 +124,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
ieee80211_rx_result
ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
{
u8 *data, *sa, *da, *key = NULL, qos_tid;
size_t data_len;
@ -139,7 +139,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
/*
* No way to verify the MIC if the hardware stripped it
*/
if (rx->u.rx.status->flag & RX_FLAG_MMIC_STRIPPED)
if (rx->status->flag & RX_FLAG_MMIC_STRIPPED)
return RX_CONTINUE;
if (!rx->key || rx->key->conf.alg != ALG_TKIP ||
@ -161,7 +161,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
ALG_TKIP_TEMP_AUTH_TX_MIC_KEY];
michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) {
if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
if (!(rx->flags & IEEE80211_RX_RA_MATCH))
return RX_DROP_UNUSABLE;
printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from "
@ -176,14 +176,14 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
/* update IV in key information to be able to detect replays */
rx->key->u.tkip.iv32_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv32;
rx->key->u.tkip.iv16_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv16;
rx->key->u.tkip.iv32_rx[rx->queue] = rx->tkip_iv32;
rx->key->u.tkip.iv16_rx[rx->queue] = rx->tkip_iv16;
return RX_CONTINUE;
}
static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
static int tkip_encrypt_skb(struct ieee80211_tx_data *tx,
struct sk_buff *skb, int test)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
@ -228,7 +228,7 @@ static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
0x7f),
(u8) key->u.tkip.iv16);
tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
tx->control->key_idx = tx->key->conf.hw_key_idx;
return 0;
}
@ -243,30 +243,30 @@ static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
ieee80211_tx_result
ieee80211_crypto_tkip_encrypt(struct ieee80211_txrx_data *tx)
ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx)
{
struct sk_buff *skb = tx->skb;
int wpa_test = 0, test = 0;
tx->u.tx.control->icv_len = TKIP_ICV_LEN;
tx->u.tx.control->iv_len = TKIP_IV_LEN;
ieee80211_tx_set_iswep(tx);
tx->control->icv_len = TKIP_ICV_LEN;
tx->control->iv_len = TKIP_IV_LEN;
ieee80211_tx_set_protected(tx);
if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
!(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
!wpa_test) {
/* hwaccel - with no need for preallocated room for IV/ICV */
tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
tx->control->key_idx = tx->key->conf.hw_key_idx;
return TX_CONTINUE;
}
if (tkip_encrypt_skb(tx, skb, test) < 0)
return TX_DROP;
if (tx->u.tx.extra_frag) {
if (tx->extra_frag) {
int i;
for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
if (tkip_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
for (i = 0; i < tx->num_extra_frag; i++) {
if (tkip_encrypt_skb(tx, tx->extra_frag[i], test)
< 0)
return TX_DROP;
}
@ -277,7 +277,7 @@ ieee80211_crypto_tkip_encrypt(struct ieee80211_txrx_data *tx)
ieee80211_rx_result
ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
u16 fc;
@ -295,8 +295,8 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
if (!rx->sta || skb->len - hdrlen < 12)
return RX_DROP_UNUSABLE;
if (rx->u.rx.status->flag & RX_FLAG_DECRYPTED) {
if (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) {
if (rx->status->flag & RX_FLAG_DECRYPTED) {
if (rx->status->flag & RX_FLAG_IV_STRIPPED) {
/*
* Hardware took care of all processing, including
* replay protection, and stripped the ICV/IV so
@ -312,9 +312,9 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
res = ieee80211_tkip_decrypt_data(rx->local->wep_rx_tfm,
key, skb->data + hdrlen,
skb->len - hdrlen, rx->sta->addr,
hwaccel, rx->u.rx.queue,
&rx->u.rx.tkip_iv32,
&rx->u.rx.tkip_iv16);
hwaccel, rx->queue,
&rx->tkip_iv32,
&rx->tkip_iv16);
if (res != TKIP_DECRYPT_OK || wpa_test) {
#ifdef CONFIG_MAC80211_DEBUG
if (net_ratelimit())
@ -429,7 +429,7 @@ static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
}
static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx,
struct sk_buff *skb, int test)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
@ -478,7 +478,7 @@ static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {
/* hwaccel - with preallocated room for CCMP header */
tx->u.tx.control->key_idx = key->conf.hw_key_idx;
tx->control->key_idx = key->conf.hw_key_idx;
return 0;
}
@ -492,30 +492,30 @@ static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
ieee80211_tx_result
ieee80211_crypto_ccmp_encrypt(struct ieee80211_txrx_data *tx)
ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx)
{
struct sk_buff *skb = tx->skb;
int test = 0;
tx->u.tx.control->icv_len = CCMP_MIC_LEN;
tx->u.tx.control->iv_len = CCMP_HDR_LEN;
ieee80211_tx_set_iswep(tx);
tx->control->icv_len = CCMP_MIC_LEN;
tx->control->iv_len = CCMP_HDR_LEN;
ieee80211_tx_set_protected(tx);
if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
!(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
/* hwaccel - with no need for preallocated room for CCMP "
* header or MIC fields */
tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
tx->control->key_idx = tx->key->conf.hw_key_idx;
return TX_CONTINUE;
}
if (ccmp_encrypt_skb(tx, skb, test) < 0)
return TX_DROP;
if (tx->u.tx.extra_frag) {
if (tx->extra_frag) {
int i;
for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
if (ccmp_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
for (i = 0; i < tx->num_extra_frag; i++) {
if (ccmp_encrypt_skb(tx, tx->extra_frag[i], test)
< 0)
return TX_DROP;
}
@ -526,7 +526,7 @@ ieee80211_crypto_ccmp_encrypt(struct ieee80211_txrx_data *tx)
ieee80211_rx_result
ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
u16 fc;
@ -547,15 +547,15 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
if (!rx->sta || data_len < 0)
return RX_DROP_UNUSABLE;
if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED))
if ((rx->status->flag & RX_FLAG_DECRYPTED) &&
(rx->status->flag & RX_FLAG_IV_STRIPPED))
return RX_CONTINUE;
(void) ccmp_hdr2pn(pn, skb->data + hdrlen);
if (memcmp(pn, key->u.ccmp.rx_pn[rx->u.rx.queue], CCMP_PN_LEN) <= 0) {
if (memcmp(pn, key->u.ccmp.rx_pn[rx->queue], CCMP_PN_LEN) <= 0) {
#ifdef CONFIG_MAC80211_DEBUG
u8 *ppn = key->u.ccmp.rx_pn[rx->u.rx.queue];
u8 *ppn = key->u.ccmp.rx_pn[rx->queue];
printk(KERN_DEBUG "%s: CCMP replay detected for RX frame from "
"%s (RX PN %02x%02x%02x%02x%02x%02x <= prev. PN "
@ -568,7 +568,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
return RX_DROP_UNUSABLE;
}
if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) {
if (!(rx->status->flag & RX_FLAG_DECRYPTED)) {
/* hardware didn't decrypt/verify MIC */
u8 *scratch, *b_0, *aad;
@ -593,7 +593,7 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
}
}
memcpy(key->u.ccmp.rx_pn[rx->u.rx.queue], pn, CCMP_PN_LEN);
memcpy(key->u.ccmp.rx_pn[rx->queue], pn, CCMP_PN_LEN);
/* Remove CCMP header and MIC */
skb_trim(skb, skb->len - CCMP_MIC_LEN);