/* common attributes */
IEEE80211_IF_FILE(channel_use, channel_use, DEC);
IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
-IEEE80211_IF_FILE(eapol, eapol, DEC);
-IEEE80211_IF_FILE(ieee8021_x, ieee802_1x, DEC);
+IEEE80211_IF_FILE(ieee802_1x_pac, ieee802_1x_pac, DEC);
/* STA/IBSS attributes */
IEEE80211_IF_FILE(state, u.sta.state, DEC);
{
DEBUGFS_ADD(channel_use, sta);
DEBUGFS_ADD(drop_unencrypted, sta);
- DEBUGFS_ADD(eapol, sta);
- DEBUGFS_ADD(ieee8021_x, sta);
+ DEBUGFS_ADD(ieee802_1x_pac, sta);
DEBUGFS_ADD(state, sta);
DEBUGFS_ADD(bssid, sta);
DEBUGFS_ADD(prev_bssid, sta);
{
DEBUGFS_ADD(channel_use, ap);
DEBUGFS_ADD(drop_unencrypted, ap);
- DEBUGFS_ADD(eapol, ap);
- DEBUGFS_ADD(ieee8021_x, ap);
+ DEBUGFS_ADD(ieee802_1x_pac, ap);
DEBUGFS_ADD(num_sta_ps, ap);
DEBUGFS_ADD(dtim_period, ap);
DEBUGFS_ADD(dtim_count, ap);
{
DEBUGFS_ADD(channel_use, wds);
DEBUGFS_ADD(drop_unencrypted, wds);
- DEBUGFS_ADD(eapol, wds);
- DEBUGFS_ADD(ieee8021_x, wds);
+ DEBUGFS_ADD(ieee802_1x_pac, wds);
DEBUGFS_ADD(peer, wds);
}
{
DEBUGFS_ADD(channel_use, vlan);
DEBUGFS_ADD(drop_unencrypted, vlan);
- DEBUGFS_ADD(eapol, vlan);
- DEBUGFS_ADD(ieee8021_x, vlan);
+ DEBUGFS_ADD(ieee802_1x_pac, vlan);
}
static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_DEL(channel_use, sta);
DEBUGFS_DEL(drop_unencrypted, sta);
- DEBUGFS_DEL(eapol, sta);
- DEBUGFS_DEL(ieee8021_x, sta);
+ DEBUGFS_DEL(ieee802_1x_pac, sta);
DEBUGFS_DEL(state, sta);
DEBUGFS_DEL(bssid, sta);
DEBUGFS_DEL(prev_bssid, sta);
{
DEBUGFS_DEL(channel_use, ap);
DEBUGFS_DEL(drop_unencrypted, ap);
- DEBUGFS_DEL(eapol, ap);
- DEBUGFS_DEL(ieee8021_x, ap);
+ DEBUGFS_DEL(ieee802_1x_pac, ap);
DEBUGFS_DEL(num_sta_ps, ap);
DEBUGFS_DEL(dtim_period, ap);
DEBUGFS_DEL(dtim_count, ap);
{
DEBUGFS_DEL(channel_use, wds);
DEBUGFS_DEL(drop_unencrypted, wds);
- DEBUGFS_DEL(eapol, wds);
- DEBUGFS_DEL(ieee8021_x, wds);
+ DEBUGFS_DEL(ieee802_1x_pac, wds);
DEBUGFS_DEL(peer, wds);
}
{
DEBUGFS_DEL(channel_use, vlan);
DEBUGFS_DEL(drop_unencrypted, vlan);
- DEBUGFS_DEL(eapol, vlan);
- DEBUGFS_DEL(ieee8021_x, vlan);
+ DEBUGFS_DEL(ieee802_1x_pac, vlan);
}
static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
unsigned int flags;
int drop_unencrypted;
- int eapol; /* 0 = process EAPOL frames as normal data frames,
- * 1 = send EAPOL frames through wlan#ap to hostapd
- * (default) */
- int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
- * port */
+ /*
+ * IEEE 802.1X Port access control in effect,
+ * drop packets to/from unauthorized port
+ */
+ int ieee802_1x_pac;
u16 sequence;
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
+ struct dentry *ieee802_1x_pac;
struct dentry *state;
struct dentry *bssid;
struct dentry *prev_bssid;
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
+ struct dentry *ieee802_1x_pac;
struct dentry *num_sta_ps;
struct dentry *dtim_period;
struct dentry *dtim_count;
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
+ struct dentry *ieee802_1x_pac;
struct dentry *peer;
} wds;
struct {
struct dentry *channel_use;
struct dentry *drop_unencrypted;
- struct dentry *eapol;
- struct dentry *ieee8021_x;
+ struct dentry *ieee802_1x_pac;
} vlan;
struct {
struct dentry *mode;
/* Default values for sub-interface parameters */
sdata->drop_unencrypted = 0;
- sdata->eapol = 1;
for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
skb_queue_head_init(&sdata->fragments[i].skb_list);
rthdr->it_len = cpu_to_le16(rtap_len);
}
- skb_set_mac_header(skb, 0);
+ skb_reset_mac_header(skb);
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->pkt_type = PACKET_OTHERHOST;
skb->protocol = htons(ETH_P_802_2);
return TXRX_DROP;
}
- 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;
- else if (is_multicast_ether_addr(hdr->addr1)) {
- if (is_broadcast_ether_addr(hdr->addr1))
- rx->skb->pkt_type = PACKET_BROADCAST;
- else
- rx->skb->pkt_type = PACKET_MULTICAST;
- } else
- rx->skb->pkt_type = PACKET_OTHERHOST;
-
/* Drop disallowed frame classes based on STA auth/assoc state;
* IEEE 802.11, Chap 5.5.
*
}
static int
-ieee80211_drop_802_1x_pae(struct ieee80211_txrx_data *rx, int hdrlen)
+ieee80211_802_1x_port_control(struct ieee80211_txrx_data *rx)
{
- if (rx->sdata->eapol && ieee80211_is_eapol(rx->skb, hdrlen) &&
- rx->sdata->type != IEEE80211_IF_TYPE_STA &&
- (rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
- return 0;
-
- if (unlikely(rx->sdata->ieee802_1x &&
- (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
- (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
- (!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED)) &&
- !ieee80211_is_eapol(rx->skb, hdrlen))) {
+ if (unlikely(rx->sdata->ieee802_1x_pac &&
+ (!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED)))) {
#ifdef CONFIG_MAC80211_DEBUG
printk(KERN_DEBUG "%s: dropped frame "
"(unauthorized port)\n", rx->dev->name);
}
static int
-ieee80211_drop_unencrypted(struct ieee80211_txrx_data *rx, int hdrlen)
+ieee80211_drop_unencrypted(struct ieee80211_txrx_data *rx)
{
/*
* Pass through unencrypted frames if the hardware has
if (unlikely(!(rx->fc & IEEE80211_FCTL_PROTECTED) &&
(rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
(rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
- (rx->key || rx->sdata->drop_unencrypted) &&
- (rx->sdata->eapol == 0 ||
- !ieee80211_is_eapol(rx->skb, hdrlen)))) {
+ (rx->key || rx->sdata->drop_unencrypted))) {
if (net_ratelimit())
printk(KERN_DEBUG "%s: RX non-WEP frame, but expected "
"encryption\n", rx->dev->name);
} else {
struct ethhdr *ehdr;
__be16 len;
+
skb_pull(skb, hdrlen);
len = htons(skb->len);
ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr));
return 0;
}
+/*
+ * requires that rx->skb is a frame with ethernet header
+ */
+static bool ieee80211_frame_allowed(struct ieee80211_txrx_data *rx)
+{
+ static const u8 pae_group_addr[ETH_ALEN]
+ = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x03 };
+ struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;
+
+ /*
+ * Allow EAPOL frames to us/the PAE group address regardless
+ * of whether the frame was encrypted or not.
+ */
+ if (ehdr->h_proto == htons(ETH_P_PAE) &&
+ (compare_ether_addr(ehdr->h_dest, rx->dev->dev_addr) == 0 ||
+ compare_ether_addr(ehdr->h_dest, pae_group_addr) == 0))
+ return true;
+
+ if (ieee80211_802_1x_port_control(rx) ||
+ ieee80211_drop_unencrypted(rx))
+ return false;
+
+ return true;
+}
+
+/*
+ * requires that rx->skb is a frame with ethernet header
+ */
static void
ieee80211_deliver_skb(struct ieee80211_txrx_data *rx)
{
struct ieee80211_local *local = rx->local;
struct sk_buff *skb, *xmit_skb;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ethhdr *ehdr = (struct ethhdr *) rx->skb->data;
+ struct sta_info *dsta;
skb = rx->skb;
xmit_skb = NULL;
- if (local->bridge_packets && (sdata->type == IEEE80211_IF_TYPE_AP
- || sdata->type == IEEE80211_IF_TYPE_VLAN) &&
+ if (local->bridge_packets && (sdata->type == IEEE80211_IF_TYPE_AP ||
+ 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 */
+ if (is_multicast_ether_addr(ehdr->h_dest)) {
+ /*
+ * send multicast frames both to higher layers in
+ * local net stack and back to the wireless medium
+ */
xmit_skb = skb_copy(skb, GFP_ATOMIC);
if (!xmit_skb && net_ratelimit())
printk(KERN_DEBUG "%s: failed to clone "
"multicast frame\n", dev->name);
} else {
- struct sta_info *dsta;
dsta = sta_info_get(local, skb->data);
- if (dsta && !dsta->dev) {
- if (net_ratelimit())
- printk(KERN_DEBUG "Station with null "
- "dev structure!\n");
- } else if (dsta && dsta->dev == dev) {
- /* Destination station is associated to this
- * AP, so send the frame directly to it and
- * do not pass the frame to local net stack.
+ if (dsta && dsta->dev == dev) {
+ /*
+ * The destination station is associated to
+ * this AP (in this VLAN), so send the frame
+ * directly to it and do not pass it to local
+ * net stack.
*/
xmit_skb = skb;
skb = NULL;
if (xmit_skb) {
/* send to wireless media */
xmit_skb->protocol = htons(ETH_P_802_3);
- skb_set_network_header(xmit_skb, 0);
- skb_set_mac_header(xmit_skb, 0);
+ skb_reset_network_header(xmit_skb);
+ skb_reset_mac_header(xmit_skb);
dev_queue_xmit(xmit_skb);
}
}
}
}
- skb_set_network_header(frame, 0);
+ skb_reset_network_header(frame);
frame->dev = dev;
frame->priority = skb->priority;
rx->skb = frame;
- if ((ieee80211_drop_802_1x_pae(rx, 0)) ||
- (ieee80211_drop_unencrypted(rx, 0))) {
- if (skb == frame) /* last frame */
- return TXRX_DROP;
- dev_kfree_skb(frame);
- continue;
- }
-
payload = frame->data;
ethertype = (payload[6] << 8) | payload[7];
if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
- ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
- compare_ether_addr(payload,
- bridge_tunnel_header) == 0)) {
+ ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+ compare_ether_addr(payload,
+ bridge_tunnel_header) == 0)) {
/* remove RFC1042 or Bridge-Tunnel
* encapsulation and replace EtherType */
skb_pull(frame, 6);
memcpy(skb_push(frame, ETH_ALEN), src, ETH_ALEN);
memcpy(skb_push(frame, ETH_ALEN), dst, ETH_ALEN);
} else {
- memcpy(skb_push(frame, sizeof(__be16)), &len,
- sizeof(__be16));
+ memcpy(skb_push(frame, sizeof(__be16)),
+ &len, sizeof(__be16));
memcpy(skb_push(frame, ETH_ALEN), src, ETH_ALEN);
memcpy(skb_push(frame, ETH_ALEN), dst, ETH_ALEN);
}
+ if (!ieee80211_frame_allowed(rx)) {
+ if (skb == frame) /* last frame */
+ return TXRX_DROP;
+ dev_kfree_skb(frame);
+ continue;
+ }
ieee80211_deliver_skb(rx);
}
{
struct net_device *dev = rx->dev;
u16 fc;
- int err, hdrlen;
+ int err;
fc = rx->fc;
if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA))
if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
return TXRX_DROP;
- hdrlen = ieee80211_get_hdrlen(fc);
-
- if ((ieee80211_drop_802_1x_pae(rx, hdrlen)) ||
- (ieee80211_drop_unencrypted(rx, hdrlen)))
- return TXRX_DROP;
-
err = ieee80211_data_to_8023(rx);
if (unlikely(err))
return TXRX_DROP;
+ if (!ieee80211_frame_allowed(rx))
+ return TXRX_DROP;
+
rx->skb->dev = dev;
dev->stats.rx_packets++;
return TXRX_CONTINUE;
}
- if (unlikely(/* !injected && */ tx->sdata->ieee802_1x &&
- !(sta_flags & WLAN_STA_AUTHORIZED))) {
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- DECLARE_MAC_BUF(mac);
- printk(KERN_DEBUG "%s: dropped frame to %s"
- " (unauthorized port)\n", tx->dev->name,
- print_mac(mac, hdr->addr1));
-#endif
- I802_DEBUG_INC(tx->local->tx_handlers_drop_unauth_port);
- return TXRX_DROP;
- }
-
return TXRX_CONTINUE;
}
else if ((key = rcu_dereference(tx->sdata->default_key)))
tx->key = key;
else if (tx->sdata->drop_unencrypted &&
- !(tx->sdata->eapol &&
- ieee80211_is_eapol(tx->skb, ieee80211_get_hdrlen(fc)))) {
+ !ieee80211_is_eapol(tx->skb, ieee80211_get_hdrlen(fc))) {
I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
return TXRX_DROP;
} else {
int encaps_len, skip_header_bytes;
int nh_pos, h_pos;
struct sta_info *sta;
+ u32 sta_flags = 0;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (unlikely(skb->len < ETH_HLEN)) {
/* convert Ethernet header to proper 802.11 header (based on
* operation mode) */
ethertype = (skb->data[12] << 8) | skb->data[13];
- /* TODO: handling for 802.1x authorized/unauthorized port */
fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
switch (sdata->type) {
goto fail;
}
- /* receiver is QoS enabled, use a QoS type frame */
sta = sta_info_get(local, hdr.addr1);
if (sta) {
- if (sta->flags & WLAN_STA_WME) {
- fc |= IEEE80211_STYPE_QOS_DATA;
- hdrlen += 2;
- }
+ sta_flags = sta->flags;
sta_info_put(sta);
}
+ /* receiver is QoS enabled, use a QoS type frame */
+ if (sta_flags & WLAN_STA_WME) {
+ fc |= IEEE80211_STYPE_QOS_DATA;
+ hdrlen += 2;
+ }
+
+ /*
+ * If port access control is enabled, drop frames to unauthorised
+ * stations unless they are EAPOL frames from the local station.
+ */
+ if (unlikely(sdata->ieee802_1x_pac &&
+ !(sta_flags & WLAN_STA_AUTHORIZED) &&
+ !(ethertype == ETH_P_PAE &&
+ compare_ether_addr(dev->dev_addr,
+ skb->data + ETH_ALEN) == 0))) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ DECLARE_MAC_BUF(mac);
+
+ if (net_ratelimit())
+ printk(KERN_DEBUG "%s: dropped frame to %s"
+ " (unauthorized port)\n", dev->name,
+ print_mac(mac, hdr.addr1));
+#endif
+
+ I802_DEBUG_INC(local->tx_handlers_drop_unauth_port);
+
+ ret = 0;
+ goto fail;
+ }
+
hdr.frame_control = cpu_to_le16(fc);
hdr.duration_id = 0;
hdr.seq_ctrl = 0;
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff