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-rw-r--r--net/wireless/util.c104
1 files changed, 81 insertions, 23 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 3e7525d0d8e3..95eab2690f4f 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -48,7 +48,7 @@ u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband,
if (WARN_ON(!sband))
return 1;
- if (sband->band == IEEE80211_BAND_2GHZ) {
+ if (sband->band == NL80211_BAND_2GHZ) {
if (scan_width == NL80211_BSS_CHAN_WIDTH_5 ||
scan_width == NL80211_BSS_CHAN_WIDTH_10)
mandatory_flag = IEEE80211_RATE_MANDATORY_G;
@@ -66,26 +66,26 @@ u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband,
}
EXPORT_SYMBOL(ieee80211_mandatory_rates);
-int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band)
+int ieee80211_channel_to_frequency(int chan, enum nl80211_band band)
{
/* see 802.11 17.3.8.3.2 and Annex J
* there are overlapping channel numbers in 5GHz and 2GHz bands */
if (chan <= 0)
return 0; /* not supported */
switch (band) {
- case IEEE80211_BAND_2GHZ:
+ case NL80211_BAND_2GHZ:
if (chan == 14)
return 2484;
else if (chan < 14)
return 2407 + chan * 5;
break;
- case IEEE80211_BAND_5GHZ:
+ case NL80211_BAND_5GHZ:
if (chan >= 182 && chan <= 196)
return 4000 + chan * 5;
else
return 5000 + chan * 5;
break;
- case IEEE80211_BAND_60GHZ:
+ case NL80211_BAND_60GHZ:
if (chan < 5)
return 56160 + chan * 2160;
break;
@@ -117,11 +117,11 @@ EXPORT_SYMBOL(ieee80211_frequency_to_channel);
struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
int freq)
{
- enum ieee80211_band band;
+ enum nl80211_band band;
struct ieee80211_supported_band *sband;
int i;
- for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ for (band = 0; band < NUM_NL80211_BANDS; band++) {
sband = wiphy->bands[band];
if (!sband)
@@ -138,12 +138,12 @@ struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
EXPORT_SYMBOL(__ieee80211_get_channel);
static void set_mandatory_flags_band(struct ieee80211_supported_band *sband,
- enum ieee80211_band band)
+ enum nl80211_band band)
{
int i, want;
switch (band) {
- case IEEE80211_BAND_5GHZ:
+ case NL80211_BAND_5GHZ:
want = 3;
for (i = 0; i < sband->n_bitrates; i++) {
if (sband->bitrates[i].bitrate == 60 ||
@@ -156,7 +156,7 @@ static void set_mandatory_flags_band(struct ieee80211_supported_band *sband,
}
WARN_ON(want);
break;
- case IEEE80211_BAND_2GHZ:
+ case NL80211_BAND_2GHZ:
want = 7;
for (i = 0; i < sband->n_bitrates; i++) {
if (sband->bitrates[i].bitrate == 10) {
@@ -186,12 +186,12 @@ static void set_mandatory_flags_band(struct ieee80211_supported_band *sband,
}
WARN_ON(want != 0 && want != 3 && want != 6);
break;
- case IEEE80211_BAND_60GHZ:
+ case NL80211_BAND_60GHZ:
/* check for mandatory HT MCS 1..4 */
WARN_ON(!sband->ht_cap.ht_supported);
WARN_ON((sband->ht_cap.mcs.rx_mask[0] & 0x1e) != 0x1e);
break;
- case IEEE80211_NUM_BANDS:
+ case NUM_NL80211_BANDS:
WARN_ON(1);
break;
}
@@ -199,9 +199,9 @@ static void set_mandatory_flags_band(struct ieee80211_supported_band *sband,
void ieee80211_set_bitrate_flags(struct wiphy *wiphy)
{
- enum ieee80211_band band;
+ enum nl80211_band band;
- for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ for (band = 0; band < NUM_NL80211_BANDS; band++)
if (wiphy->bands[band])
set_mandatory_flags_band(wiphy->bands[band], band);
}
@@ -410,8 +410,8 @@ unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr)
}
EXPORT_SYMBOL(ieee80211_get_mesh_hdrlen);
-int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
- enum nl80211_iftype iftype)
+static int __ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
+ enum nl80211_iftype iftype, bool is_amsdu)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
u16 hdrlen, ethertype;
@@ -505,7 +505,7 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
payload = skb->data + hdrlen;
ethertype = (payload[6] << 8) | payload[7];
- if (likely((ether_addr_equal(payload, rfc1042_header) &&
+ if (likely((!is_amsdu && ether_addr_equal(payload, rfc1042_header) &&
ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
ether_addr_equal(payload, bridge_tunnel_header))) {
/* remove RFC1042 or Bridge-Tunnel encapsulation and
@@ -526,6 +526,12 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
}
return 0;
}
+
+int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
+ enum nl80211_iftype iftype)
+{
+ return __ieee80211_data_to_8023(skb, addr, iftype, false);
+}
EXPORT_SYMBOL(ieee80211_data_to_8023);
int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
@@ -685,6 +691,9 @@ void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
/* the last MSDU has no padding */
if (subframe_len > remaining)
goto purge;
+ /* mitigate A-MSDU aggregation injection attacks */
+ if (ether_addr_equal(eth->h_dest, rfc1042_header))
+ goto purge;
skb_pull(skb, sizeof(struct ethhdr));
/* reuse skb for the last subframe */
@@ -950,6 +959,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
switch (otype) {
case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_P2P_GO:
cfg80211_stop_ap(rdev, dev, true);
break;
case NL80211_IFTYPE_ADHOC:
@@ -965,6 +975,9 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
case NL80211_IFTYPE_MESH_POINT:
/* mesh should be handled? */
break;
+ case NL80211_IFTYPE_OCB:
+ cfg80211_leave_ocb(rdev, dev);
+ break;
default:
break;
}
@@ -1330,22 +1343,22 @@ size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
EXPORT_SYMBOL(ieee80211_ie_split);
bool ieee80211_operating_class_to_band(u8 operating_class,
- enum ieee80211_band *band)
+ enum nl80211_band *band)
{
switch (operating_class) {
case 112:
case 115 ... 127:
case 128 ... 130:
- *band = IEEE80211_BAND_5GHZ;
+ *band = NL80211_BAND_5GHZ;
return true;
case 81:
case 82:
case 83:
case 84:
- *band = IEEE80211_BAND_2GHZ;
+ *band = NL80211_BAND_2GHZ;
return true;
case 180:
- *band = IEEE80211_BAND_60GHZ;
+ *band = NL80211_BAND_60GHZ;
return true;
}
@@ -1818,10 +1831,10 @@ int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy)
{
- enum ieee80211_band band;
+ enum nl80211_band band;
unsigned int n_channels = 0;
- for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ for (band = 0; band < NUM_NL80211_BANDS; band++)
if (wiphy->bands[band])
n_channels += wiphy->bands[band]->n_channels;
@@ -1908,3 +1921,48 @@ bool cfg80211_is_gratuitous_arp_unsolicited_na(struct sk_buff *skb)
return false;
}
EXPORT_SYMBOL(cfg80211_is_gratuitous_arp_unsolicited_na);
+
+/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
+struct iapp_layer2_update {
+ u8 da[ETH_ALEN]; /* broadcast */
+ u8 sa[ETH_ALEN]; /* STA addr */
+ __be16 len; /* 6 */
+ u8 dsap; /* 0 */
+ u8 ssap; /* 0 */
+ u8 control;
+ u8 xid_info[3];
+} __packed;
+
+void cfg80211_send_layer2_update(struct net_device *dev, const u8 *addr)
+{
+ struct iapp_layer2_update *msg;
+ struct sk_buff *skb;
+
+ /* Send Level 2 Update Frame to update forwarding tables in layer 2
+ * bridge devices */
+
+ skb = dev_alloc_skb(sizeof(*msg));
+ if (!skb)
+ return;
+ msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
+
+ /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
+ * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
+
+ eth_broadcast_addr(msg->da);
+ ether_addr_copy(msg->sa, addr);
+ msg->len = htons(6);
+ msg->dsap = 0;
+ msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
+ msg->control = 0xaf; /* XID response lsb.1111F101.
+ * F=0 (no poll command; unsolicited frame) */
+ msg->xid_info[0] = 0x81; /* XID format identifier */
+ msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
+ msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
+
+ skb->dev = dev;
+ skb->protocol = eth_type_trans(skb, dev);
+ memset(skb->cb, 0, sizeof(skb->cb));
+ netif_rx_ni(skb);
+}
+EXPORT_SYMBOL(cfg80211_send_layer2_update);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-22 15:08:04 +0000