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-rw-r--r--net/mac80211/ieee80211_i.h20
-rw-r--r--net/mac80211/rx.c52
-rw-r--r--net/mac80211/tx.c61
-rw-r--r--net/mac80211/wpa.c6
4 files changed, 78 insertions, 61 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index a2b018bae180..9888611660b7 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -113,6 +113,15 @@ typedef enum {
TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
} ieee80211_txrx_result;
+/* flags used in struct ieee80211_txrx_data.flags */
+/* whether the MSDU was fragmented */
+#define IEEE80211_TXRXD_FRAGMENTED BIT(0)
+#define IEEE80211_TXRXD_TXUNICAST BIT(1)
+#define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2)
+#define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3)
+#define IEEE80211_TXRXD_RXIN_SCAN BIT(4)
+/* frame is destined to interface currently processed (incl. multicast frames) */
+#define IEEE80211_TXRXD_RXRA_MATCH BIT(5)
struct ieee80211_txrx_data {
struct sk_buff *skb;
struct net_device *dev;
@@ -121,13 +130,10 @@ struct ieee80211_txrx_data {
struct sta_info *sta;
u16 fc, ethertype;
struct ieee80211_key *key;
- unsigned int fragmented:1; /* whether the MSDU was fragmented */
+ unsigned int flags;
union {
struct {
struct ieee80211_tx_control *control;
- unsigned int unicast:1;
- unsigned int ps_buffered:1;
- unsigned int probe_last_frag:1;
struct ieee80211_hw_mode *mode;
struct ieee80211_rate *rate;
/* use this rate (if set) for last fragment; rate can
@@ -147,10 +153,6 @@ struct ieee80211_txrx_data {
int sent_ps_buffered;
int queue;
int load;
- unsigned int in_scan:1;
- /* frame is destined to interface currently processed
- * (including multicast frames) */
- unsigned int ra_match:1;
} rx;
} u;
};
@@ -176,7 +178,7 @@ struct ieee80211_tx_stored_packet {
int last_frag_rateidx;
int last_frag_hwrate;
struct ieee80211_rate *last_frag_rate;
- unsigned int last_frag_rate_ctrl_probe:1;
+ unsigned int last_frag_rate_ctrl_probe;
};
typedef ieee80211_txrx_result (*ieee80211_tx_handler)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 441383ced931..af94fb597415 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -221,7 +221,7 @@ ieee80211_rx_h_passive_scan(struct ieee80211_txrx_data *rx)
return TXRX_QUEUED;
}
- if (unlikely(rx->u.rx.in_scan)) {
+ if (unlikely(rx->flags & IEEE80211_TXRXD_RXIN_SCAN)) {
/* scanning finished during invoking of handlers */
I802_DEBUG_INC(local->rx_handlers_drop_passive_scan);
return TXRX_DROP;
@@ -241,7 +241,7 @@ ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
if (unlikely(rx->fc & IEEE80211_FCTL_RETRY &&
rx->sta->last_seq_ctrl[rx->u.rx.queue] ==
hdr->seq_ctrl)) {
- if (rx->u.rx.ra_match) {
+ if (rx->flags & IEEE80211_TXRXD_RXRA_MATCH) {
rx->local->dot11FrameDuplicateCount++;
rx->sta->num_duplicates++;
}
@@ -259,7 +259,7 @@ ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
return TXRX_DROP;
}
- if (!rx->u.rx.ra_match)
+ if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
rx->skb->pkt_type = PACKET_OTHERHOST;
else if (compare_ether_addr(rx->dev->dev_addr, hdr->addr1) == 0)
rx->skb->pkt_type = PACKET_HOST;
@@ -287,7 +287,7 @@ ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
if ((!(rx->fc & IEEE80211_FCTL_FROMDS) &&
!(rx->fc & IEEE80211_FCTL_TODS) &&
(rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)
- || !rx->u.rx.ra_match) {
+ || !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) {
/* Drop IBSS frames and frames for other hosts
* silently. */
return TXRX_DROP;
@@ -338,7 +338,7 @@ ieee80211_rx_h_load_key(struct ieee80211_txrx_data *rx)
* No point in finding a key if the frame is neither
* addressed to us nor a multicast frame.
*/
- if (!rx->u.rx.ra_match)
+ if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
return TXRX_CONTINUE;
if (!is_multicast_ether_addr(hdr->addr1) && rx->sta && rx->sta->key) {
@@ -480,7 +480,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
sta->last_rx = jiffies;
}
- if (!rx->u.rx.ra_match)
+ if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
return TXRX_CONTINUE;
sta->rx_fragments++;
@@ -522,7 +522,8 @@ ieee80211_rx_h_wep_weak_iv_detection(struct ieee80211_txrx_data *rx)
{
if (!rx->sta || !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
(rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
- !rx->key || rx->key->alg != ALG_WEP || !rx->u.rx.ra_match)
+ !rx->key || rx->key->alg != ALG_WEP ||
+ !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
return TXRX_CONTINUE;
/* Check for weak IVs, if hwaccel did not remove IV from the frame */
@@ -755,7 +756,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
}
/* Complete frame has been reassembled - process it now */
- rx->fragmented = 1;
+ rx->flags |= IEEE80211_TXRXD_FRAGMENTED;
out:
if (rx->sta)
@@ -776,7 +777,7 @@ ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
if (likely(!rx->sta ||
(rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL ||
(rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PSPOLL ||
- !rx->u.rx.ra_match))
+ !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)))
return TXRX_CONTINUE;
skb = skb_dequeue(&rx->sta->tx_filtered);
@@ -860,7 +861,8 @@ static ieee80211_txrx_result
ieee80211_rx_h_802_1x_pae(struct ieee80211_txrx_data *rx)
{
if (rx->sdata->eapol && ieee80211_is_eapol(rx->skb) &&
- rx->sdata->type != IEEE80211_IF_TYPE_STA && rx->u.rx.ra_match) {
+ rx->sdata->type != IEEE80211_IF_TYPE_STA &&
+ (rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) {
/* Pass both encrypted and unencrypted EAPOL frames to user
* space for processing. */
if (!rx->local->apdev)
@@ -1053,7 +1055,8 @@ ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
sdata->stats.rx_bytes += skb->len;
if (local->bridge_packets && (sdata->type == IEEE80211_IF_TYPE_AP
- || sdata->type == IEEE80211_IF_TYPE_VLAN) && rx->u.rx.ra_match) {
+ || sdata->type == IEEE80211_IF_TYPE_VLAN) &&
+ (rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) {
if (is_multicast_ether_addr(skb->data)) {
/* send multicast frames both to higher layers in
* local net stack and back to the wireless media */
@@ -1104,7 +1107,7 @@ ieee80211_rx_h_mgmt(struct ieee80211_txrx_data *rx)
{
struct ieee80211_sub_if_data *sdata;
- if (!rx->u.rx.ra_match)
+ if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
return TXRX_DROP;
sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
@@ -1279,30 +1282,30 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
if (!bssid)
return 0;
if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
- if (!rx->u.rx.in_scan)
+ if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
return 0;
- rx->u.rx.ra_match = 0;
+ rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
} else if (!multicast &&
compare_ether_addr(sdata->dev->dev_addr,
hdr->addr1) != 0) {
if (!sdata->promisc)
return 0;
- rx->u.rx.ra_match = 0;
+ rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
}
break;
case IEEE80211_IF_TYPE_IBSS:
if (!bssid)
return 0;
if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) {
- if (!rx->u.rx.in_scan)
+ if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
return 0;
- rx->u.rx.ra_match = 0;
+ rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
} else if (!multicast &&
compare_ether_addr(sdata->dev->dev_addr,
hdr->addr1) != 0) {
if (!sdata->promisc)
return 0;
- rx->u.rx.ra_match = 0;
+ rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
} else if (!rx->sta)
rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb,
bssid, hdr->addr2);
@@ -1314,11 +1317,12 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata,
return 0;
} else if (!ieee80211_bssid_match(bssid,
sdata->dev->dev_addr)) {
- if (!rx->u.rx.in_scan)
+ if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
return 0;
- rx->u.rx.ra_match = 0;
+ rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH;
}
- if (sdata->dev == sdata->local->mdev && !rx->u.rx.in_scan)
+ if (sdata->dev == sdata->local->mdev &&
+ !(rx->flags & IEEE80211_TXRXD_RXIN_SCAN))
/* do not receive anything via
* master device when not scanning */
return 0;
@@ -1384,7 +1388,7 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
}
if (unlikely(local->sta_scanning))
- rx.u.rx.in_scan = 1;
+ rx.flags |= IEEE80211_TXRXD_RXIN_SCAN;
if (__ieee80211_invoke_rx_handlers(local, local->rx_pre_handlers, &rx,
sta) != TXRX_CONTINUE)
@@ -1394,7 +1398,7 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
skb_push(skb, radiotap_len);
if (sta && !sta->assoc_ap && !(sta->flags & WLAN_STA_WDS) &&
!local->iff_promiscs && !is_multicast_ether_addr(hdr->addr1)) {
- rx.u.rx.ra_match = 1;
+ rx.flags |= IEEE80211_TXRXD_RXRA_MATCH;
ieee80211_invoke_rx_handlers(local, local->rx_handlers, &rx,
rx.sta);
sta_info_put(sta);
@@ -1405,7 +1409,7 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
read_lock(&local->sub_if_lock);
list_for_each_entry(sdata, &local->sub_if_list, list) {
- rx.u.rx.ra_match = 1;
+ rx.flags |= IEEE80211_TXRXD_RXRA_MATCH;
if (!netif_running(sdata->dev))
continue;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index eb4d9eab0f3f..01e7a734f867 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -223,12 +223,12 @@ ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
(tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ))
return TXRX_DROP;
- if (tx->u.tx.ps_buffered)
+ if (tx->flags & IEEE80211_TXRXD_TXPS_BUFFERED)
return TXRX_CONTINUE;
sta_flags = tx->sta ? tx->sta->flags : 0;
- if (likely(tx->u.tx.unicast)) {
+ if (likely(tx->flags & IEEE80211_TXRXD_TXUNICAST)) {
if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
tx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
(tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
@@ -410,10 +410,10 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
static ieee80211_txrx_result
ieee80211_tx_h_ps_buf(struct ieee80211_txrx_data *tx)
{
- if (unlikely(tx->u.tx.ps_buffered))
+ if (unlikely(tx->flags & IEEE80211_TXRXD_TXPS_BUFFERED))
return TXRX_CONTINUE;
- if (tx->u.tx.unicast)
+ if (tx->flags & IEEE80211_TXRXD_TXUNICAST)
return ieee80211_tx_h_unicast_ps_buf(tx);
else
return ieee80211_tx_h_multicast_ps_buf(tx);
@@ -467,7 +467,7 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
u8 *pos;
int frag_threshold = tx->local->fragmentation_threshold;
- if (!tx->fragmented)
+ if (!(tx->flags & IEEE80211_TXRXD_FRAGMENTED))
return TXRX_CONTINUE;
first = tx->skb;
@@ -604,7 +604,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx)
&extra);
if (unlikely(extra.probe != NULL)) {
tx->u.tx.control->flags |= IEEE80211_TXCTL_RATE_CTRL_PROBE;
- tx->u.tx.probe_last_frag = 1;
+ tx->flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
tx->u.tx.control->alt_retry_rate = tx->u.tx.rate->val;
tx->u.tx.rate = extra.probe;
} else {
@@ -613,11 +613,13 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx)
if (!tx->u.tx.rate)
return TXRX_DROP;
if (tx->u.tx.mode->mode == MODE_IEEE80211G &&
- tx->sdata->use_protection && tx->fragmented &&
- extra.nonerp) {
+ tx->sdata->use_protection &&
+ (tx->flags & IEEE80211_TXRXD_FRAGMENTED) && extra.nonerp) {
tx->u.tx.last_frag_rate = tx->u.tx.rate;
- tx->u.tx.probe_last_frag = extra.probe ? 1 : 0;
-
+ if (extra.probe)
+ tx->flags &= ~IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
+ else
+ tx->flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
tx->u.tx.rate = extra.nonerp;
tx->u.tx.control->rate = extra.nonerp;
tx->u.tx.control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
@@ -654,7 +656,7 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
control->retry_limit = 1;
}
- if (tx->fragmented) {
+ if (tx->flags & IEEE80211_TXRXD_FRAGMENTED) {
/* Do not use multiple retry rates when sending fragmented
* frames.
* TODO: The last fragment could still use multiple retry
@@ -667,7 +669,8 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
* for the frame. */
if (mode->mode == MODE_IEEE80211G &&
(tx->u.tx.rate->flags & IEEE80211_RATE_ERP) &&
- tx->u.tx.unicast && tx->sdata->use_protection &&
+ (tx->flags & IEEE80211_TXRXD_TXUNICAST) &&
+ tx->sdata->use_protection &&
!(control->flags & IEEE80211_TXCTL_USE_RTS_CTS))
control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT;
@@ -685,8 +688,8 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
* for remaining fragments will be updated when they are being sent
* to low-level driver in ieee80211_tx(). */
dur = ieee80211_duration(tx, is_multicast_ether_addr(hdr->addr1),
- tx->fragmented ? tx->u.tx.extra_frag[0]->len :
- 0);
+ (tx->flags & IEEE80211_TXRXD_FRAGMENTED) ?
+ tx->u.tx.extra_frag[0]->len : 0);
hdr->duration_id = cpu_to_le16(dur);
if ((control->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
@@ -976,15 +979,20 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
}
tx->u.tx.control = control;
- tx->u.tx.unicast = !is_multicast_ether_addr(hdr->addr1);
- if (is_multicast_ether_addr(hdr->addr1))
+ if (is_multicast_ether_addr(hdr->addr1)) {
+ tx->flags &= ~IEEE80211_TXRXD_TXUNICAST;
control->flags |= IEEE80211_TXCTL_NO_ACK;
- else
+ } else {
+ tx->flags |= IEEE80211_TXRXD_TXUNICAST;
control->flags &= ~IEEE80211_TXCTL_NO_ACK;
- tx->fragmented = local->fragmentation_threshold <
- IEEE80211_MAX_FRAG_THRESHOLD && tx->u.tx.unicast &&
- skb->len + FCS_LEN > local->fragmentation_threshold &&
- (!local->ops->set_frag_threshold);
+ }
+ if (local->fragmentation_threshold < IEEE80211_MAX_FRAG_THRESHOLD &&
+ (tx->flags & IEEE80211_TXRXD_TXUNICAST) &&
+ skb->len + FCS_LEN > local->fragmentation_threshold &&
+ !local->ops->set_frag_threshold)
+ tx->flags |= IEEE80211_TXRXD_FRAGMENTED;
+ else
+ tx->flags &= ~IEEE80211_TXRXD_FRAGMENTED;
if (!tx->sta)
control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
else if (tx->sta->clear_dst_mask) {
@@ -1055,7 +1063,7 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
if (i == tx->u.tx.num_extra_frag) {
control->tx_rate = tx->u.tx.last_frag_hwrate;
control->rate = tx->u.tx.last_frag_rate;
- if (tx->u.tx.probe_last_frag)
+ if (tx->flags & IEEE80211_TXRXD_TXPROBE_LAST_FRAG)
control->flags |=
IEEE80211_TXCTL_RATE_CTRL_PROBE;
else
@@ -1186,7 +1194,8 @@ retry:
store->num_extra_frag = tx.u.tx.num_extra_frag;
store->last_frag_hwrate = tx.u.tx.last_frag_hwrate;
store->last_frag_rate = tx.u.tx.last_frag_rate;
- store->last_frag_rate_ctrl_probe = tx.u.tx.probe_last_frag;
+ store->last_frag_rate_ctrl_probe =
+ !!(tx.flags & IEEE80211_TXRXD_TXPROBE_LAST_FRAG);
}
return 0;
@@ -1613,7 +1622,9 @@ void ieee80211_tx_pending(unsigned long data)
tx.u.tx.num_extra_frag = store->num_extra_frag;
tx.u.tx.last_frag_hwrate = store->last_frag_hwrate;
tx.u.tx.last_frag_rate = store->last_frag_rate;
- tx.u.tx.probe_last_frag = store->last_frag_rate_ctrl_probe;
+ tx.flags = 0;
+ if (store->last_frag_rate_ctrl_probe)
+ tx.flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG;
ret = __ieee80211_tx(local, store->skb, &tx);
if (ret) {
if (ret == IEEE80211_TX_FRAG_AGAIN)
@@ -1859,7 +1870,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
dev_kfree_skb_any(skb);
}
sta = tx.sta;
- tx.u.tx.ps_buffered = 1;
+ tx.flags |= IEEE80211_TXRXD_TXPS_BUFFERED;
for (handler = local->tx_handlers; *handler != NULL; handler++) {
res = (*handler)(&tx);
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 742b5585d1b7..1142b42b5fe9 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -90,7 +90,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
return TXRX_DROP;
if (!tx->key->force_sw_encrypt &&
- !tx->fragmented &&
+ !(tx->flags & IEEE80211_TXRXD_FRAGMENTED) &&
!(tx->local->hw.flags & IEEE80211_HW_TKIP_INCLUDE_MMIC) &&
!wpa_test) {
/* hwaccel - with no need for preallocated room for Michael MIC
@@ -154,7 +154,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
/* Need to verify Michael MIC sometimes in software even when
* hwaccel is used. Atheros ar5212: fragmented frames and QoS
* frames. */
- if (!rx->fragmented && !wpa_test)
+ if (!(rx->flags & IEEE80211_TXRXD_FRAGMENTED) && !wpa_test)
goto remove_mic;
}
@@ -173,7 +173,7 @@ 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->u.rx.ra_match)
+ if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
return TXRX_DROP;
printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from "
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.