u8 data_retries;
} __attribute__ ((packed));
+/* common interface routines */
-static int rate_list_match(const int *rate_list, int rate)
+static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
{
- int i;
+ struct ieee80211_sub_if_data *sdata;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ return &(sdata->stats);
+}
- if (!rate_list)
- return 0;
+static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
+{
+ memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
+ return ETH_ALEN;
+}
- for (i = 0; rate_list[i] >= 0; i++)
- if (rate_list[i] == rate)
- return 1;
+/* master interface */
- return 0;
-}
+static int ieee80211_master_open(struct net_device *dev)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
+ int res = -EOPNOTSUPP;
+ read_lock(&local->sub_if_lock);
+ list_for_each_entry(sdata, &local->sub_if_list, list) {
+ if (sdata->dev != dev && netif_running(sdata->dev)) {
+ res = 0;
+ break;
+ }
+ }
+ read_unlock(&local->sub_if_lock);
+ return res;
+}
-void ieee80211_prepare_rates(struct ieee80211_local *local,
- struct ieee80211_hw_mode *mode)
+static int ieee80211_master_stop(struct net_device *dev)
{
- int i;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata;
- for (i = 0; i < mode->num_rates; i++) {
- struct ieee80211_rate *rate = &mode->rates[i];
+ read_lock(&local->sub_if_lock);
+ list_for_each_entry(sdata, &local->sub_if_list, list)
+ if (sdata->dev != dev && netif_running(sdata->dev))
+ dev_close(sdata->dev);
+ read_unlock(&local->sub_if_lock);
- rate->flags &= ~(IEEE80211_RATE_SUPPORTED |
- IEEE80211_RATE_BASIC);
+ return 0;
+}
- if (local->supp_rates[mode->mode]) {
- if (!rate_list_match(local->supp_rates[mode->mode],
- rate->rate))
- continue;
- }
+/* management interface */
- rate->flags |= IEEE80211_RATE_SUPPORTED;
+static void
+ieee80211_fill_frame_info(struct ieee80211_local *local,
+ struct ieee80211_frame_info *fi,
+ struct ieee80211_rx_status *status)
+{
+ if (status) {
+ struct timespec ts;
+ struct ieee80211_rate *rate;
- /* Use configured basic rate set if it is available. If not,
- * use defaults that are sane for most cases. */
- if (local->basic_rates[mode->mode]) {
- if (rate_list_match(local->basic_rates[mode->mode],
- rate->rate))
- rate->flags |= IEEE80211_RATE_BASIC;
- } else switch (mode->mode) {
+ jiffies_to_timespec(jiffies, &ts);
+ fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 +
+ ts.tv_nsec / 1000);
+ fi->mactime = cpu_to_be64(status->mactime);
+ switch (status->phymode) {
case MODE_IEEE80211A:
- if (rate->rate == 60 || rate->rate == 120 ||
- rate->rate == 240)
- rate->flags |= IEEE80211_RATE_BASIC;
+ fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
break;
case MODE_IEEE80211B:
- if (rate->rate == 10 || rate->rate == 20)
- rate->flags |= IEEE80211_RATE_BASIC;
- break;
- case MODE_ATHEROS_TURBO:
- if (rate->rate == 120 || rate->rate == 240 ||
- rate->rate == 480)
- rate->flags |= IEEE80211_RATE_BASIC;
+ fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
break;
case MODE_IEEE80211G:
- if (rate->rate == 10 || rate->rate == 20 ||
- rate->rate == 55 || rate->rate == 110)
- rate->flags |= IEEE80211_RATE_BASIC;
- break;
- }
-
- /* Set ERP and MANDATORY flags based on phymode */
- switch (mode->mode) {
- case MODE_IEEE80211A:
- if (rate->rate == 60 || rate->rate == 120 ||
- rate->rate == 240)
- rate->flags |= IEEE80211_RATE_MANDATORY;
- break;
- case MODE_IEEE80211B:
- if (rate->rate == 10)
- rate->flags |= IEEE80211_RATE_MANDATORY;
+ fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
break;
case MODE_ATHEROS_TURBO:
+ fi->phytype =
+ htonl(ieee80211_phytype_dsss_dot11_turbo);
break;
- case MODE_IEEE80211G:
- if (rate->rate == 10 || rate->rate == 20 ||
- rate->rate == 55 || rate->rate == 110 ||
- rate->rate == 60 || rate->rate == 120 ||
- rate->rate == 240)
- rate->flags |= IEEE80211_RATE_MANDATORY;
+ default:
+ fi->phytype = htonl(0xAAAAAAAA);
break;
}
- if (ieee80211_is_erp_rate(mode->mode, rate->rate))
- rate->flags |= IEEE80211_RATE_ERP;
+ fi->channel = htonl(status->channel);
+ rate = ieee80211_get_rate(local, status->phymode,
+ status->rate);
+ if (rate) {
+ fi->datarate = htonl(rate->rate);
+ if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
+ if (status->rate == rate->val)
+ fi->preamble = htonl(2); /* long */
+ else if (status->rate == rate->val2)
+ fi->preamble = htonl(1); /* short */
+ } else
+ fi->preamble = htonl(0);
+ } else {
+ fi->datarate = htonl(0);
+ fi->preamble = htonl(0);
+ }
+
+ fi->antenna = htonl(status->antenna);
+ fi->priority = htonl(0xffffffff); /* no clue */
+ fi->ssi_type = htonl(ieee80211_ssi_raw);
+ fi->ssi_signal = htonl(status->ssi);
+ fi->ssi_noise = 0x00000000;
+ fi->encoding = 0;
+ } else {
+ /* clear everything because we really don't know.
+ * the msg_type field isn't present on monitor frames
+ * so we don't know whether it will be present or not,
+ * but it's ok to not clear it since it'll be assigned
+ * anyway */
+ memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type));
+
+ fi->ssi_type = htonl(ieee80211_ssi_none);
+ }
+ fi->version = htonl(IEEE80211_FI_VERSION);
+ fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type));
+}
+
+/* this routine is actually not just for this, but also
+ * for pushing fake 'management' frames into userspace.
+ * it shall be replaced by a netlink-based system. */
+void
+ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
+ struct ieee80211_rx_status *status, u32 msg_type)
+{
+ struct ieee80211_frame_info *fi;
+ const size_t hlen = sizeof(struct ieee80211_frame_info);
+ struct ieee80211_sub_if_data *sdata;
+
+ skb->dev = local->apdev;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev);
+
+ if (skb_headroom(skb) < hlen) {
+ I802_DEBUG_INC(local->rx_expand_skb_head);
+ if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) {
+ dev_kfree_skb(skb);
+ return;
+ }
}
+
+ fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
+
+ ieee80211_fill_frame_info(local, fi, status);
+ fi->msg_type = htonl(msg_type);
+
+ sdata->stats.rx_packets++;
+ sdata->stats.rx_bytes += skb->len;
+
+ skb_set_mac_header(skb, 0);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->pkt_type = PACKET_OTHERHOST;
+ skb->protocol = htons(ETH_P_802_2);
+ memset(skb->cb, 0, sizeof(skb->cb));
+ netif_rx(skb);
}
+int ieee80211_radar_status(struct ieee80211_hw *hw, int channel,
+ int radar, int radar_type)
+{
+ struct sk_buff *skb;
+ struct ieee80211_radar_info *msg;
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (!local->apdev)
+ return 0;
+
+ skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+ sizeof(struct ieee80211_radar_info));
+
+ if (!skb)
+ return -ENOMEM;
+ skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+
+ msg = (struct ieee80211_radar_info *)
+ skb_put(skb, sizeof(struct ieee80211_radar_info));
+ msg->channel = channel;
+ msg->radar = radar;
+ msg->radar_type = radar_type;
+
+ ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_radar);
+ return 0;
+}
+EXPORT_SYMBOL(ieee80211_radar_status);
void ieee80211_key_threshold_notify(struct net_device *dev,
struct ieee80211_key *key,
ieee80211_msg_key_threshold_notification);
}
-
-u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
+static int ieee80211_mgmt_open(struct net_device *dev)
{
- u16 fc;
-
- if (len < 24)
- return NULL;
-
- fc = le16_to_cpu(hdr->frame_control);
-
- switch (fc & IEEE80211_FCTL_FTYPE) {
- case IEEE80211_FTYPE_DATA:
- switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
- case IEEE80211_FCTL_TODS:
- return hdr->addr1;
- case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
- return NULL;
- case IEEE80211_FCTL_FROMDS:
- return hdr->addr2;
- case 0:
- return hdr->addr3;
- }
- break;
- case IEEE80211_FTYPE_MGMT:
- return hdr->addr3;
- case IEEE80211_FTYPE_CTL:
- if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
- return hdr->addr1;
- else
- return NULL;
- }
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- return NULL;
+ if (!netif_running(local->mdev))
+ return -EOPNOTSUPP;
+ return 0;
}
-int ieee80211_get_hdrlen(u16 fc)
+static int ieee80211_mgmt_stop(struct net_device *dev)
{
- int hdrlen = 24;
+ return 0;
+}
- switch (fc & IEEE80211_FCTL_FTYPE) {
- case IEEE80211_FTYPE_DATA:
- if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
- hdrlen = 30; /* Addr4 */
- /*
- * The QoS Control field is two bytes and its presence is
- * indicated by the IEEE80211_STYPE_QOS_DATA bit. Add 2 to
- * hdrlen if that bit is set.
- * This works by masking out the bit and shifting it to
- * bit position 1 so the result has the value 0 or 2.
- */
- hdrlen += (fc & IEEE80211_STYPE_QOS_DATA)
- >> (ilog2(IEEE80211_STYPE_QOS_DATA)-1);
- break;
- case IEEE80211_FTYPE_CTL:
- /*
- * ACK and CTS are 10 bytes, all others 16. To see how
- * to get this condition consider
- * subtype mask: 0b0000000011110000 (0x00F0)
- * ACK subtype: 0b0000000011010000 (0x00D0)
- * CTS subtype: 0b0000000011000000 (0x00C0)
- * bits that matter: ^^^ (0x00E0)
- * value of those: 0b0000000011000000 (0x00C0)
- */
- if ((fc & 0xE0) == 0xC0)
- hdrlen = 10;
- else
- hdrlen = 16;
- break;
+static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
+{
+ /* FIX: what would be proper limits for MTU?
+ * This interface uses 802.11 frames. */
+ if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) {
+ printk(KERN_WARNING "%s: invalid MTU %d\n",
+ dev->name, new_mtu);
+ return -EINVAL;
}
- return hdrlen;
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ dev->mtu = new_mtu;
+ return 0;
}
-EXPORT_SYMBOL(ieee80211_get_hdrlen);
-int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
+void ieee80211_if_mgmt_setup(struct net_device *dev)
{
- const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) skb->data;
- int hdrlen;
-
- if (unlikely(skb->len < 10))
- return 0;
- hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
- if (unlikely(hdrlen > skb->len))
- return 0;
- return hdrlen;
+ ether_setup(dev);
+ dev->hard_start_xmit = ieee80211_mgmt_start_xmit;
+ dev->change_mtu = ieee80211_change_mtu_apdev;
+ dev->get_stats = ieee80211_get_stats;
+ dev->open = ieee80211_mgmt_open;
+ dev->stop = ieee80211_mgmt_stop;
+ dev->type = ARPHRD_IEEE80211_PRISM;
+ dev->hard_header_parse = header_parse_80211;
+ dev->uninit = ieee80211_if_reinit;
+ dev->destructor = ieee80211_if_free;
}
-EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
+/* regular interfaces */
-int ieee80211_is_eapol(const struct sk_buff *skb)
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
{
- const struct ieee80211_hdr *hdr;
- u16 fc;
- int hdrlen;
-
- if (unlikely(skb->len < 10))
- return 0;
-
- hdr = (const struct ieee80211_hdr *) skb->data;
- fc = le16_to_cpu(hdr->frame_control);
-
- if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
- return 0;
-
- hdrlen = ieee80211_get_hdrlen(fc);
-
- if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) &&
- memcmp(skb->data + hdrlen, eapol_header,
- sizeof(eapol_header)) == 0))
- return 1;
+ /* FIX: what would be proper limits for MTU?
+ * This interface uses 802.3 frames. */
+ if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
+ printk(KERN_WARNING "%s: invalid MTU %d\n",
+ dev->name, new_mtu);
+ return -EINVAL;
+ }
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+ dev->mtu = new_mtu;
return 0;
}
+static inline int identical_mac_addr_allowed(int type1, int type2)
+{
+ return (type1 == IEEE80211_IF_TYPE_MNTR ||
+ type2 == IEEE80211_IF_TYPE_MNTR ||
+ (type1 == IEEE80211_IF_TYPE_AP &&
+ type2 == IEEE80211_IF_TYPE_WDS) ||
+ (type1 == IEEE80211_IF_TYPE_WDS &&
+ (type2 == IEEE80211_IF_TYPE_WDS ||
+ type2 == IEEE80211_IF_TYPE_AP)) ||
+ (type1 == IEEE80211_IF_TYPE_AP &&
+ type2 == IEEE80211_IF_TYPE_VLAN) ||
+ (type1 == IEEE80211_IF_TYPE_VLAN &&
+ (type2 == IEEE80211_IF_TYPE_AP ||
+ type2 == IEEE80211_IF_TYPE_VLAN)));
+}
-void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
+/* Check if running monitor interfaces should go to a "soft monitor" mode
+ * and switch them if necessary. */
+static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ struct ieee80211_if_init_conf conf;
- hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- if (tx->u.tx.extra_frag) {
- struct ieee80211_hdr *fhdr;
- int i;
- for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
- fhdr = (struct ieee80211_hdr *)
- tx->u.tx.extra_frag[i]->data;
- fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
- }
+ if (local->open_count && local->open_count == local->monitors &&
+ !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
+ local->ops->remove_interface) {
+ conf.if_id = -1;
+ conf.type = IEEE80211_IF_TYPE_MNTR;
+ conf.mac_addr = NULL;
+ local->ops->remove_interface(local_to_hw(local), &conf);
}
}
-
-static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
- int rate, int erp, int short_preamble)
+/* Check if running monitor interfaces should go to a "hard monitor" mode
+ * and switch them if necessary. */
+static void ieee80211_start_hard_monitor(struct ieee80211_local *local)
{
- int dur;
-
- /* calculate duration (in microseconds, rounded up to next higher
- * integer if it includes a fractional microsecond) to send frame of
- * len bytes (does not include FCS) at the given rate. Duration will
- * also include SIFS.
- *
- * rate is in 100 kbps, so divident is multiplied by 10 in the
- * DIV_ROUND_UP() operations.
- */
-
- if (local->hw.conf.phymode == MODE_IEEE80211A || erp ||
- local->hw.conf.phymode == MODE_ATHEROS_TURBO) {
- /*
- * OFDM:
- *
- * N_DBPS = DATARATE x 4
- * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
- * (16 = SIGNAL time, 6 = tail bits)
- * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
- *
- * T_SYM = 4 usec
- * 802.11a - 17.5.2: aSIFSTime = 16 usec
- * 802.11g - 19.8.4: aSIFSTime = 10 usec +
- * signal ext = 6 usec
- */
- /* FIX: Atheros Turbo may have different (shorter) duration? */
- dur = 16; /* SIFS + signal ext */
- dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
- dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
- dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
- 4 * rate); /* T_SYM x N_SYM */
- } else {
- /*
- * 802.11b or 802.11g with 802.11b compatibility:
- * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
- * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
- *
- * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
- * aSIFSTime = 10 usec
- * aPreambleLength = 144 usec or 72 usec with short preamble
- * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
- */
- dur = 10; /* aSIFSTime = 10 usec */
- dur += short_preamble ? (72 + 24) : (144 + 48);
+ struct ieee80211_if_init_conf conf;
- dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
+ if (local->open_count && local->open_count == local->monitors &&
+ !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
+ conf.if_id = -1;
+ conf.type = IEEE80211_IF_TYPE_MNTR;
+ conf.mac_addr = NULL;
+ local->ops->add_interface(local_to_hw(local), &conf);
}
-
- return dur;
}
-
-/* Exported duration function for driver use */
-__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
- size_t frame_len, int rate)
+static int ieee80211_open(struct net_device *dev)
{
- struct ieee80211_local *local = hw_to_local(hw);
- u16 dur;
- int erp;
-
- erp = ieee80211_is_erp_rate(hw->conf.phymode, rate);
- dur = ieee80211_frame_duration(local, frame_len, rate,
- erp, local->short_preamble);
+ struct ieee80211_sub_if_data *sdata, *nsdata;
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_init_conf conf;
+ int res;
- return cpu_to_le16(dur);
-}
-EXPORT_SYMBOL(ieee80211_generic_frame_duration);
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ read_lock(&local->sub_if_lock);
+ list_for_each_entry(nsdata, &local->sub_if_list, list) {
+ struct net_device *ndev = nsdata->dev;
+ if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
+ compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 &&
+ !identical_mac_addr_allowed(sdata->type, nsdata->type)) {
+ read_unlock(&local->sub_if_lock);
+ return -ENOTUNIQ;
+ }
+ }
+ read_unlock(&local->sub_if_lock);
-__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
- size_t frame_len,
- const struct ieee80211_tx_control *frame_txctl)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_rate *rate;
- int short_preamble = local->short_preamble;
- int erp;
- u16 dur;
+ if (sdata->type == IEEE80211_IF_TYPE_WDS &&
+ is_zero_ether_addr(sdata->u.wds.remote_addr))
+ return -ENOLINK;
- rate = frame_txctl->rts_rate;
- erp = !!(rate->flags & IEEE80211_RATE_ERP);
-
- /* CTS duration */
- dur = ieee80211_frame_duration(local, 10, rate->rate,
- erp, short_preamble);
- /* Data frame duration */
- dur += ieee80211_frame_duration(local, frame_len, rate->rate,
- erp, short_preamble);
- /* ACK duration */
- dur += ieee80211_frame_duration(local, 10, rate->rate,
- erp, short_preamble);
-
- return cpu_to_le16(dur);
-}
-EXPORT_SYMBOL(ieee80211_rts_duration);
+ if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count &&
+ !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
+ /* run the interface in a "soft monitor" mode */
+ local->monitors++;
+ local->open_count++;
+ local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+ return 0;
+ }
+ ieee80211_start_soft_monitor(local);
+ conf.if_id = dev->ifindex;
+ conf.type = sdata->type;
+ conf.mac_addr = dev->dev_addr;
+ res = local->ops->add_interface(local_to_hw(local), &conf);
+ if (res) {
+ if (sdata->type == IEEE80211_IF_TYPE_MNTR)
+ ieee80211_start_hard_monitor(local);
+ return res;
+ }
-__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
- size_t frame_len,
- const struct ieee80211_tx_control *frame_txctl)
-{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_rate *rate;
- int short_preamble = local->short_preamble;
- int erp;
- u16 dur;
+ if (local->open_count == 0) {
+ res = 0;
+ tasklet_enable(&local->tx_pending_tasklet);
+ tasklet_enable(&local->tasklet);
+ if (local->ops->open)
+ res = local->ops->open(local_to_hw(local));
+ if (res == 0) {
+ res = dev_open(local->mdev);
+ if (res) {
+ if (local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+ } else {
+ res = ieee80211_hw_config(local);
+ if (res && local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+ else if (!res && local->apdev)
+ dev_open(local->apdev);
+ }
+ }
+ if (res) {
+ if (local->ops->remove_interface)
+ local->ops->remove_interface(local_to_hw(local),
+ &conf);
+ return res;
+ }
+ }
+ local->open_count++;
- rate = frame_txctl->rts_rate;
- erp = !!(rate->flags & IEEE80211_RATE_ERP);
+ if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
+ local->monitors++;
+ local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+ } else
+ ieee80211_if_config(dev);
- /* Data frame duration */
- dur = ieee80211_frame_duration(local, frame_len, rate->rate,
- erp, short_preamble);
- if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) {
- /* ACK duration */
- dur += ieee80211_frame_duration(local, 10, rate->rate,
- erp, short_preamble);
- }
+ if (sdata->type == IEEE80211_IF_TYPE_STA &&
+ !local->user_space_mlme)
+ netif_carrier_off(dev);
+ else
+ netif_carrier_on(dev);
- return cpu_to_le16(dur);
+ netif_start_queue(dev);
+ return 0;
}
-EXPORT_SYMBOL(ieee80211_ctstoself_duration);
-static int __ieee80211_if_config(struct net_device *dev,
- struct sk_buff *beacon,
- struct ieee80211_tx_control *control)
+static void ieee80211_if_shutdown(struct net_device *dev)
{
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_conf conf;
- static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-
- if (!local->ops->config_interface || !netif_running(dev))
- return 0;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- memset(&conf, 0, sizeof(conf));
- conf.type = sdata->type;
- if (sdata->type == IEEE80211_IF_TYPE_STA ||
- sdata->type == IEEE80211_IF_TYPE_IBSS) {
- if (local->sta_scanning &&
- local->scan_dev == dev)
- conf.bssid = scan_bssid;
- else
- conf.bssid = sdata->u.sta.bssid;
- conf.ssid = sdata->u.sta.ssid;
- conf.ssid_len = sdata->u.sta.ssid_len;
- conf.generic_elem = sdata->u.sta.extra_ie;
- conf.generic_elem_len = sdata->u.sta.extra_ie_len;
- } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
- conf.ssid = sdata->u.ap.ssid;
- conf.ssid_len = sdata->u.ap.ssid_len;
- conf.generic_elem = sdata->u.ap.generic_elem;
- conf.generic_elem_len = sdata->u.ap.generic_elem_len;
- conf.beacon = beacon;
- conf.beacon_control = control;
+ ASSERT_RTNL();
+ switch (sdata->type) {
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ sdata->u.sta.state = IEEE80211_DISABLED;
+ del_timer_sync(&sdata->u.sta.timer);
+ skb_queue_purge(&sdata->u.sta.skb_queue);
+ if (!local->ops->hw_scan &&
+ local->scan_dev == sdata->dev) {
+ local->sta_scanning = 0;
+ cancel_delayed_work(&local->scan_work);
+ }
+ flush_workqueue(local->hw.workqueue);
+ break;
}
- return local->ops->config_interface(local_to_hw(local),
- dev->ifindex, &conf);
-}
-
-int ieee80211_if_config(struct net_device *dev)
-{
- return __ieee80211_if_config(dev, NULL, NULL);
}
-int ieee80211_if_config_beacon(struct net_device *dev)
+static int ieee80211_stop(struct net_device *dev)
{
+ struct ieee80211_sub_if_data *sdata;
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_tx_control control;
- struct sk_buff *skb;
-
- if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
- return 0;
- skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
- if (!skb)
- return -ENOMEM;
- return __ieee80211_if_config(dev, skb, &control);
-}
-int ieee80211_hw_config(struct ieee80211_local *local)
-{
- struct ieee80211_hw_mode *mode;
- struct ieee80211_channel *chan;
- int ret = 0;
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- if (local->sta_scanning) {
- chan = local->scan_channel;
- mode = local->scan_hw_mode;
- } else {
- chan = local->oper_channel;
- mode = local->oper_hw_mode;
+ if (sdata->type == IEEE80211_IF_TYPE_MNTR &&
+ local->open_count > 1 &&
+ !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
+ /* remove "soft monitor" interface */
+ local->open_count--;
+ local->monitors--;
+ if (!local->monitors)
+ local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+ return 0;
}
- local->hw.conf.channel = chan->chan;
- local->hw.conf.channel_val = chan->val;
- local->hw.conf.power_level = chan->power_level;
- local->hw.conf.freq = chan->freq;
- local->hw.conf.phymode = mode->mode;
- local->hw.conf.antenna_max = chan->antenna_max;
- local->hw.conf.chan = chan;
- local->hw.conf.mode = mode;
-
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
- "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
- local->hw.conf.phymode);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
-
- if (local->ops->config)
- ret = local->ops->config(local_to_hw(local), &local->hw.conf);
-
- return ret;
-}
-
+ netif_stop_queue(dev);
+ ieee80211_if_shutdown(dev);
-static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
-{
- /* FIX: what would be proper limits for MTU?
- * This interface uses 802.3 frames. */
- if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
- printk(KERN_WARNING "%s: invalid MTU %d\n",
- dev->name, new_mtu);
- return -EINVAL;
+ if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
+ local->monitors--;
+ if (!local->monitors)
+ local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
}
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- dev->mtu = new_mtu;
- return 0;
-}
-
+ local->open_count--;
+ if (local->open_count == 0) {
+ if (netif_running(local->mdev))
+ dev_close(local->mdev);
+ if (local->apdev)
+ dev_close(local->apdev);
+ if (local->ops->stop)
+ local->ops->stop(local_to_hw(local));
+ tasklet_disable(&local->tx_pending_tasklet);
+ tasklet_disable(&local->tasklet);
+ }
+ if (local->ops->remove_interface) {
+ struct ieee80211_if_init_conf conf;
-static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
-{
- /* FIX: what would be proper limits for MTU?
- * This interface uses 802.11 frames. */
- if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) {
- printk(KERN_WARNING "%s: invalid MTU %d\n",
- dev->name, new_mtu);
- return -EINVAL;
+ conf.if_id = dev->ifindex;
+ conf.type = sdata->type;
+ conf.mac_addr = dev->dev_addr;
+ local->ops->remove_interface(local_to_hw(local), &conf);
}
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
-#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
- dev->mtu = new_mtu;
+ ieee80211_start_hard_monitor(local);
+
return 0;
}
netif_tx_unlock(local->mdev);
}
-struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
- struct dev_mc_list *prev,
- void **ptr)
+/* Must not be called for mdev and apdev */
+void ieee80211_if_setup(struct net_device *dev)
{
- struct ieee80211_local *local = hw_to_local(hw);
- struct ieee80211_sub_if_data *sdata = *ptr;
- struct dev_mc_list *mc;
-
- if (!prev) {
- WARN_ON(sdata);
- sdata = NULL;
- }
- if (!prev || !prev->next) {
- if (sdata)
- sdata = list_entry(sdata->list.next,
- struct ieee80211_sub_if_data, list);
- else
- sdata = list_entry(local->sub_if_list.next,
- struct ieee80211_sub_if_data, list);
- if (&sdata->list != &local->sub_if_list)
- mc = sdata->dev->mc_list;
- else
- mc = NULL;
- } else
- mc = prev->next;
+ ether_setup(dev);
+ dev->hard_start_xmit = ieee80211_subif_start_xmit;
+ dev->wireless_handlers = &ieee80211_iw_handler_def;
+ dev->set_multicast_list = ieee80211_set_multicast_list;
+ dev->change_mtu = ieee80211_change_mtu;
+ dev->get_stats = ieee80211_get_stats;
+ dev->open = ieee80211_open;
+ dev->stop = ieee80211_stop;
+ dev->uninit = ieee80211_if_reinit;
+ dev->destructor = ieee80211_if_free;
+}
- *ptr = sdata;
- return mc;
+/* WDS specialties */
+
+int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
+{
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sta_info *sta;
+
+ if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
+ return 0;
+
+ /* Create STA entry for the new peer */
+ sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
+ if (!sta)
+ return -ENOMEM;
+ sta_info_put(sta);
+
+ /* Remove STA entry for the old peer */
+ sta = sta_info_get(local, sdata->u.wds.remote_addr);
+ if (sta) {
+ sta_info_put(sta);
+ sta_info_free(sta, 0);
+ } else {
+ printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
+ "peer " MAC_FMT "\n",
+ dev->name, MAC_ARG(sdata->u.wds.remote_addr));
+ }
+
+ /* Update WDS link data */
+ memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
+
+ return 0;
}
-EXPORT_SYMBOL(ieee80211_get_mc_list_item);
-static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
+/* everything else */
+
+static int rate_list_match(const int *rate_list, int rate)
{
- struct ieee80211_sub_if_data *sdata;
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- return &(sdata->stats);
+ int i;
+
+ if (!rate_list)
+ return 0;
+
+ for (i = 0; rate_list[i] >= 0; i++)
+ if (rate_list[i] == rate)
+ return 1;
+
+ return 0;
}
-static void ieee80211_if_shutdown(struct net_device *dev)
+void ieee80211_prepare_rates(struct ieee80211_local *local,
+ struct ieee80211_hw_mode *mode)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int i;
- ASSERT_RTNL();
- switch (sdata->type) {
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_IBSS:
- sdata->u.sta.state = IEEE80211_DISABLED;
- del_timer_sync(&sdata->u.sta.timer);
- skb_queue_purge(&sdata->u.sta.skb_queue);
- if (!local->ops->hw_scan &&
- local->scan_dev == sdata->dev) {
- local->sta_scanning = 0;
- cancel_delayed_work(&local->scan_work);
+ for (i = 0; i < mode->num_rates; i++) {
+ struct ieee80211_rate *rate = &mode->rates[i];
+
+ rate->flags &= ~(IEEE80211_RATE_SUPPORTED |
+ IEEE80211_RATE_BASIC);
+
+ if (local->supp_rates[mode->mode]) {
+ if (!rate_list_match(local->supp_rates[mode->mode],
+ rate->rate))
+ continue;
+ }
+
+ rate->flags |= IEEE80211_RATE_SUPPORTED;
+
+ /* Use configured basic rate set if it is available. If not,
+ * use defaults that are sane for most cases. */
+ if (local->basic_rates[mode->mode]) {
+ if (rate_list_match(local->basic_rates[mode->mode],
+ rate->rate))
+ rate->flags |= IEEE80211_RATE_BASIC;
+ } else switch (mode->mode) {
+ case MODE_IEEE80211A:
+ if (rate->rate == 60 || rate->rate == 120 ||
+ rate->rate == 240)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ case MODE_IEEE80211B:
+ if (rate->rate == 10 || rate->rate == 20)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ case MODE_ATHEROS_TURBO:
+ if (rate->rate == 120 || rate->rate == 240 ||
+ rate->rate == 480)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ case MODE_IEEE80211G:
+ if (rate->rate == 10 || rate->rate == 20 ||
+ rate->rate == 55 || rate->rate == 110)
+ rate->flags |= IEEE80211_RATE_BASIC;
+ break;
+ }
+
+ /* Set ERP and MANDATORY flags based on phymode */
+ switch (mode->mode) {
+ case MODE_IEEE80211A:
+ if (rate->rate == 60 || rate->rate == 120 ||
+ rate->rate == 240)
+ rate->flags |= IEEE80211_RATE_MANDATORY;
+ break;
+ case MODE_IEEE80211B:
+ if (rate->rate == 10)
+ rate->flags |= IEEE80211_RATE_MANDATORY;
+ break;
+ case MODE_ATHEROS_TURBO:
+ break;
+ case MODE_IEEE80211G:
+ if (rate->rate == 10 || rate->rate == 20 ||
+ rate->rate == 55 || rate->rate == 110 ||
+ rate->rate == 60 || rate->rate == 120 ||
+ rate->rate == 240)
+ rate->flags |= IEEE80211_RATE_MANDATORY;
+ break;
+ }
+ if (ieee80211_is_erp_rate(mode->mode, rate->rate))
+ rate->flags |= IEEE80211_RATE_ERP;
+ }
+}
+
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
+{
+ u16 fc;
+
+ if (len < 24)
+ return NULL;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ switch (fc & IEEE80211_FCTL_FTYPE) {
+ case IEEE80211_FTYPE_DATA:
+ switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+ case IEEE80211_FCTL_TODS:
+ return hdr->addr1;
+ case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+ return NULL;
+ case IEEE80211_FCTL_FROMDS:
+ return hdr->addr2;
+ case 0:
+ return hdr->addr3;
}
- flush_workqueue(local->hw.workqueue);
break;
+ case IEEE80211_FTYPE_MGMT:
+ return hdr->addr3;
+ case IEEE80211_FTYPE_CTL:
+ if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
+ return hdr->addr1;
+ else
+ return NULL;
}
+
+ return NULL;
}
-static inline int identical_mac_addr_allowed(int type1, int type2)
+int ieee80211_get_hdrlen(u16 fc)
{
- return (type1 == IEEE80211_IF_TYPE_MNTR ||
- type2 == IEEE80211_IF_TYPE_MNTR ||
- (type1 == IEEE80211_IF_TYPE_AP &&
- type2 == IEEE80211_IF_TYPE_WDS) ||
- (type1 == IEEE80211_IF_TYPE_WDS &&
- (type2 == IEEE80211_IF_TYPE_WDS ||
- type2 == IEEE80211_IF_TYPE_AP)) ||
- (type1 == IEEE80211_IF_TYPE_AP &&
- type2 == IEEE80211_IF_TYPE_VLAN) ||
- (type1 == IEEE80211_IF_TYPE_VLAN &&
- (type2 == IEEE80211_IF_TYPE_AP ||
- type2 == IEEE80211_IF_TYPE_VLAN)));
+ int hdrlen = 24;
+
+ switch (fc & IEEE80211_FCTL_FTYPE) {
+ case IEEE80211_FTYPE_DATA:
+ if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
+ hdrlen = 30; /* Addr4 */
+ /*
+ * The QoS Control field is two bytes and its presence is
+ * indicated by the IEEE80211_STYPE_QOS_DATA bit. Add 2 to
+ * hdrlen if that bit is set.
+ * This works by masking out the bit and shifting it to
+ * bit position 1 so the result has the value 0 or 2.
+ */
+ hdrlen += (fc & IEEE80211_STYPE_QOS_DATA)
+ >> (ilog2(IEEE80211_STYPE_QOS_DATA)-1);
+ break;
+ case IEEE80211_FTYPE_CTL:
+ /*
+ * ACK and CTS are 10 bytes, all others 16. To see how
+ * to get this condition consider
+ * subtype mask: 0b0000000011110000 (0x00F0)
+ * ACK subtype: 0b0000000011010000 (0x00D0)
+ * CTS subtype: 0b0000000011000000 (0x00C0)
+ * bits that matter: ^^^ (0x00E0)
+ * value of those: 0b0000000011000000 (0x00C0)
+ */
+ if ((fc & 0xE0) == 0xC0)
+ hdrlen = 10;
+ else
+ hdrlen = 16;
+ break;
+ }
+
+ return hdrlen;
}
+EXPORT_SYMBOL(ieee80211_get_hdrlen);
-static int ieee80211_master_open(struct net_device *dev)
+int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
- int res = -EOPNOTSUPP;
+ const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) skb->data;
+ int hdrlen;
- read_lock(&local->sub_if_lock);
- list_for_each_entry(sdata, &local->sub_if_list, list) {
- if (sdata->dev != dev && netif_running(sdata->dev)) {
- res = 0;
- break;
+ if (unlikely(skb->len < 10))
+ return 0;
+ hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
+ if (unlikely(hdrlen > skb->len))
+ return 0;
+ return hdrlen;
+}
+EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
+
+
+int ieee80211_is_eapol(const struct sk_buff *skb)
+{
+ const struct ieee80211_hdr *hdr;
+ u16 fc;
+ int hdrlen;
+
+ if (unlikely(skb->len < 10))
+ return 0;
+
+ hdr = (const struct ieee80211_hdr *) skb->data;
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+ return 0;
+
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) &&
+ memcmp(skb->data + hdrlen, eapol_header,
+ sizeof(eapol_header)) == 0))
+ return 1;
+
+ return 0;
+}
+
+void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+
+ hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+ if (tx->u.tx.extra_frag) {
+ struct ieee80211_hdr *fhdr;
+ int i;
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ fhdr = (struct ieee80211_hdr *)
+ tx->u.tx.extra_frag[i]->data;
+ fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
}
}
- read_unlock(&local->sub_if_lock);
- return res;
}
-static int ieee80211_master_stop(struct net_device *dev)
+static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
+ int rate, int erp, int short_preamble)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata;
+ int dur;
- read_lock(&local->sub_if_lock);
- list_for_each_entry(sdata, &local->sub_if_list, list)
- if (sdata->dev != dev && netif_running(sdata->dev))
- dev_close(sdata->dev);
- read_unlock(&local->sub_if_lock);
+ /* calculate duration (in microseconds, rounded up to next higher
+ * integer if it includes a fractional microsecond) to send frame of
+ * len bytes (does not include FCS) at the given rate. Duration will
+ * also include SIFS.
+ *
+ * rate is in 100 kbps, so divident is multiplied by 10 in the
+ * DIV_ROUND_UP() operations.
+ */
- return 0;
+ if (local->hw.conf.phymode == MODE_IEEE80211A || erp ||
+ local->hw.conf.phymode == MODE_ATHEROS_TURBO) {
+ /*
+ * OFDM:
+ *
+ * N_DBPS = DATARATE x 4
+ * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
+ * (16 = SIGNAL time, 6 = tail bits)
+ * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
+ *
+ * T_SYM = 4 usec
+ * 802.11a - 17.5.2: aSIFSTime = 16 usec
+ * 802.11g - 19.8.4: aSIFSTime = 10 usec +
+ * signal ext = 6 usec
+ */
+ /* FIX: Atheros Turbo may have different (shorter) duration? */
+ dur = 16; /* SIFS + signal ext */
+ dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
+ dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
+ dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
+ 4 * rate); /* T_SYM x N_SYM */
+ } else {
+ /*
+ * 802.11b or 802.11g with 802.11b compatibility:
+ * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
+ * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
+ *
+ * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
+ * aSIFSTime = 10 usec
+ * aPreambleLength = 144 usec or 72 usec with short preamble
+ * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
+ */
+ dur = 10; /* aSIFSTime = 10 usec */
+ dur += short_preamble ? (72 + 24) : (144 + 48);
+
+ dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
+ }
+
+ return dur;
}
-static int ieee80211_mgmt_open(struct net_device *dev)
+/* Exported duration function for driver use */
+__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
+ size_t frame_len, int rate)
{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_local *local = hw_to_local(hw);
+ u16 dur;
+ int erp;
- if (!netif_running(local->mdev))
- return -EOPNOTSUPP;
- return 0;
-}
+ erp = ieee80211_is_erp_rate(hw->conf.phymode, rate);
+ dur = ieee80211_frame_duration(local, frame_len, rate,
+ erp, local->short_preamble);
-static int ieee80211_mgmt_stop(struct net_device *dev)
-{
- return 0;
+ return cpu_to_le16(dur);
}
+EXPORT_SYMBOL(ieee80211_generic_frame_duration);
-/* Check if running monitor interfaces should go to a "soft monitor" mode
- * and switch them if necessary. */
-static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local)
+__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
+ size_t frame_len,
+ const struct ieee80211_tx_control *frame_txctl)
{
- struct ieee80211_if_init_conf conf;
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_rate *rate;
+ int short_preamble = local->short_preamble;
+ int erp;
+ u16 dur;
- if (local->open_count && local->open_count == local->monitors &&
- !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
- local->ops->remove_interface) {
- conf.if_id = -1;
- conf.type = IEEE80211_IF_TYPE_MNTR;
- conf.mac_addr = NULL;
- local->ops->remove_interface(local_to_hw(local), &conf);
- }
-}
+ rate = frame_txctl->rts_rate;
+ erp = !!(rate->flags & IEEE80211_RATE_ERP);
-/* Check if running monitor interfaces should go to a "hard monitor" mode
- * and switch them if necessary. */
-static void ieee80211_start_hard_monitor(struct ieee80211_local *local)
-{
- struct ieee80211_if_init_conf conf;
+ /* CTS duration */
+ dur = ieee80211_frame_duration(local, 10, rate->rate,
+ erp, short_preamble);
+ /* Data frame duration */
+ dur += ieee80211_frame_duration(local, frame_len, rate->rate,
+ erp, short_preamble);
+ /* ACK duration */
+ dur += ieee80211_frame_duration(local, 10, rate->rate,
+ erp, short_preamble);
- if (local->open_count && local->open_count == local->monitors &&
- !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
- conf.if_id = -1;
- conf.type = IEEE80211_IF_TYPE_MNTR;
- conf.mac_addr = NULL;
- local->ops->add_interface(local_to_hw(local), &conf);
- }
+ return cpu_to_le16(dur);
}
+EXPORT_SYMBOL(ieee80211_rts_duration);
-static int ieee80211_open(struct net_device *dev)
+__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
+ size_t frame_len,
+ const struct ieee80211_tx_control *frame_txctl)
{
- struct ieee80211_sub_if_data *sdata, *nsdata;
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_if_init_conf conf;
- int res;
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_rate *rate;
+ int short_preamble = local->short_preamble;
+ int erp;
+ u16 dur;
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- read_lock(&local->sub_if_lock);
- list_for_each_entry(nsdata, &local->sub_if_list, list) {
- struct net_device *ndev = nsdata->dev;
+ rate = frame_txctl->rts_rate;
+ erp = !!(rate->flags & IEEE80211_RATE_ERP);
- if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
- compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 &&
- !identical_mac_addr_allowed(sdata->type, nsdata->type)) {
- read_unlock(&local->sub_if_lock);
- return -ENOTUNIQ;
- }
+ /* Data frame duration */
+ dur = ieee80211_frame_duration(local, frame_len, rate->rate,
+ erp, short_preamble);
+ if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) {
+ /* ACK duration */
+ dur += ieee80211_frame_duration(local, 10, rate->rate,
+ erp, short_preamble);
}
- read_unlock(&local->sub_if_lock);
- if (sdata->type == IEEE80211_IF_TYPE_WDS &&
- is_zero_ether_addr(sdata->u.wds.remote_addr))
- return -ENOLINK;
+ return cpu_to_le16(dur);
+}
+EXPORT_SYMBOL(ieee80211_ctstoself_duration);
- if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count &&
- !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
- /* run the interface in a "soft monitor" mode */
- local->monitors++;
- local->open_count++;
- local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+static int __ieee80211_if_config(struct net_device *dev,
+ struct sk_buff *beacon,
+ struct ieee80211_tx_control *control)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_if_conf conf;
+ static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+ if (!local->ops->config_interface || !netif_running(dev))
return 0;
- }
- ieee80211_start_soft_monitor(local);
- conf.if_id = dev->ifindex;
+ memset(&conf, 0, sizeof(conf));
conf.type = sdata->type;
- conf.mac_addr = dev->dev_addr;
- res = local->ops->add_interface(local_to_hw(local), &conf);
- if (res) {
- if (sdata->type == IEEE80211_IF_TYPE_MNTR)
- ieee80211_start_hard_monitor(local);
- return res;
- }
-
- if (local->open_count == 0) {
- res = 0;
- tasklet_enable(&local->tx_pending_tasklet);
- tasklet_enable(&local->tasklet);
- if (local->ops->open)
- res = local->ops->open(local_to_hw(local));
- if (res == 0) {
- res = dev_open(local->mdev);
- if (res) {
- if (local->ops->stop)
- local->ops->stop(local_to_hw(local));
- } else {
- res = ieee80211_hw_config(local);
- if (res && local->ops->stop)
- local->ops->stop(local_to_hw(local));
- else if (!res && local->apdev)
- dev_open(local->apdev);
- }
- }
- if (res) {
- if (local->ops->remove_interface)
- local->ops->remove_interface(local_to_hw(local),
- &conf);
- return res;
- }
+ if (sdata->type == IEEE80211_IF_TYPE_STA ||
+ sdata->type == IEEE80211_IF_TYPE_IBSS) {
+ if (local->sta_scanning &&
+ local->scan_dev == dev)
+ conf.bssid = scan_bssid;
+ else
+ conf.bssid = sdata->u.sta.bssid;
+ conf.ssid = sdata->u.sta.ssid;
+ conf.ssid_len = sdata->u.sta.ssid_len;
+ conf.generic_elem = sdata->u.sta.extra_ie;
+ conf.generic_elem_len = sdata->u.sta.extra_ie_len;
+ } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
+ conf.ssid = sdata->u.ap.ssid;
+ conf.ssid_len = sdata->u.ap.ssid_len;
+ conf.generic_elem = sdata->u.ap.generic_elem;
+ conf.generic_elem_len = sdata->u.ap.generic_elem_len;
+ conf.beacon = beacon;
+ conf.beacon_control = control;
}
- local->open_count++;
-
- if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
- local->monitors++;
- local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
- } else
- ieee80211_if_config(dev);
-
- if (sdata->type == IEEE80211_IF_TYPE_STA &&
- !local->user_space_mlme)
- netif_carrier_off(dev);
- else
- netif_carrier_on(dev);
-
- netif_start_queue(dev);
- return 0;
+ return local->ops->config_interface(local_to_hw(local),
+ dev->ifindex, &conf);
}
+int ieee80211_if_config(struct net_device *dev)
+{
+ return __ieee80211_if_config(dev, NULL, NULL);
+}
-static int ieee80211_stop(struct net_device *dev)
+int ieee80211_if_config_beacon(struct net_device *dev)
{
- struct ieee80211_sub_if_data *sdata;
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+ struct ieee80211_tx_control control;
+ struct sk_buff *skb;
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
- if (sdata->type == IEEE80211_IF_TYPE_MNTR &&
- local->open_count > 1 &&
- !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
- /* remove "soft monitor" interface */
- local->open_count--;
- local->monitors--;
- if (!local->monitors)
- local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+ if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
return 0;
- }
-
- netif_stop_queue(dev);
- ieee80211_if_shutdown(dev);
-
- if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
- local->monitors--;
- if (!local->monitors)
- local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
- }
+ skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
+ if (!skb)
+ return -ENOMEM;
+ return __ieee80211_if_config(dev, skb, &control);
+}
- local->open_count--;
- if (local->open_count == 0) {
- if (netif_running(local->mdev))
- dev_close(local->mdev);
- if (local->apdev)
- dev_close(local->apdev);
- if (local->ops->stop)
- local->ops->stop(local_to_hw(local));
- tasklet_disable(&local->tx_pending_tasklet);
- tasklet_disable(&local->tasklet);
- }
- if (local->ops->remove_interface) {
- struct ieee80211_if_init_conf conf;
+int ieee80211_hw_config(struct ieee80211_local *local)
+{
+ struct ieee80211_hw_mode *mode;
+ struct ieee80211_channel *chan;
+ int ret = 0;
- conf.if_id = dev->ifindex;
- conf.type = sdata->type;
- conf.mac_addr = dev->dev_addr;
- local->ops->remove_interface(local_to_hw(local), &conf);
+ if (local->sta_scanning) {
+ chan = local->scan_channel;
+ mode = local->scan_hw_mode;
+ } else {
+ chan = local->oper_channel;
+ mode = local->oper_hw_mode;
}
- ieee80211_start_hard_monitor(local);
+ local->hw.conf.channel = chan->chan;
+ local->hw.conf.channel_val = chan->val;
+ local->hw.conf.power_level = chan->power_level;
+ local->hw.conf.freq = chan->freq;
+ local->hw.conf.phymode = mode->mode;
+ local->hw.conf.antenna_max = chan->antenna_max;
+ local->hw.conf.chan = chan;
+ local->hw.conf.mode = mode;
- return 0;
-}
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
+ "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
+ local->hw.conf.phymode);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+ if (local->ops->config)
+ ret = local->ops->config(local_to_hw(local), &local->hw.conf);
+ return ret;
+}
-static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
+struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
+ struct dev_mc_list *prev,
+ void **ptr)
{
- memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
- return ETH_ALEN;
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct ieee80211_sub_if_data *sdata = *ptr;
+ struct dev_mc_list *mc;
+
+ if (!prev) {
+ WARN_ON(sdata);
+ sdata = NULL;
+ }
+ if (!prev || !prev->next) {
+ if (sdata)
+ sdata = list_entry(sdata->list.next,
+ struct ieee80211_sub_if_data, list);
+ else
+ sdata = list_entry(local->sub_if_list.next,
+ struct ieee80211_sub_if_data, list);
+ if (&sdata->list != &local->sub_if_list)
+ mc = sdata->dev->mc_list;
+ else
+ mc = NULL;
+ } else
+ mc = prev->next;
+
+ *ptr = sdata;
+ return mc;
}
+EXPORT_SYMBOL(ieee80211_get_mc_list_item);
struct ieee80211_rate *
ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate)
return NULL;
}
-static void
-ieee80211_fill_frame_info(struct ieee80211_local *local,
- struct ieee80211_frame_info *fi,
- struct ieee80211_rx_status *status)
-{
- if (status) {
- struct timespec ts;
- struct ieee80211_rate *rate;
-
- jiffies_to_timespec(jiffies, &ts);
- fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 +
- ts.tv_nsec / 1000);
- fi->mactime = cpu_to_be64(status->mactime);
- switch (status->phymode) {
- case MODE_IEEE80211A:
- fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
- break;
- case MODE_IEEE80211B:
- fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
- break;
- case MODE_IEEE80211G:
- fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
- break;
- case MODE_ATHEROS_TURBO:
- fi->phytype =
- htonl(ieee80211_phytype_dsss_dot11_turbo);
- break;
- default:
- fi->phytype = htonl(0xAAAAAAAA);
- break;
- }
- fi->channel = htonl(status->channel);
- rate = ieee80211_get_rate(local, status->phymode,
- status->rate);
- if (rate) {
- fi->datarate = htonl(rate->rate);
- if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
- if (status->rate == rate->val)
- fi->preamble = htonl(2); /* long */
- else if (status->rate == rate->val2)
- fi->preamble = htonl(1); /* short */
- } else
- fi->preamble = htonl(0);
- } else {
- fi->datarate = htonl(0);
- fi->preamble = htonl(0);
- }
-
- fi->antenna = htonl(status->antenna);
- fi->priority = htonl(0xffffffff); /* no clue */
- fi->ssi_type = htonl(ieee80211_ssi_raw);
- fi->ssi_signal = htonl(status->ssi);
- fi->ssi_noise = 0x00000000;
- fi->encoding = 0;
- } else {
- /* clear everything because we really don't know.
- * the msg_type field isn't present on monitor frames
- * so we don't know whether it will be present or not,
- * but it's ok to not clear it since it'll be assigned
- * anyway */
- memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type));
-
- fi->ssi_type = htonl(ieee80211_ssi_none);
- }
- fi->version = htonl(IEEE80211_FI_VERSION);
- fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type));
-}
-
-/* this routine is actually not just for this, but also
- * for pushing fake 'management' frames into userspace.
- * it shall be replaced by a netlink-based system. */
-void
-ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
- struct ieee80211_rx_status *status, u32 msg_type)
-{
- struct ieee80211_frame_info *fi;
- const size_t hlen = sizeof(struct ieee80211_frame_info);
- struct ieee80211_sub_if_data *sdata;
-
- skb->dev = local->apdev;
-
- sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev);
-
- if (skb_headroom(skb) < hlen) {
- I802_DEBUG_INC(local->rx_expand_skb_head);
- if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) {
- dev_kfree_skb(skb);
- return;
- }
- }
-
- fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
-
- ieee80211_fill_frame_info(local, fi, status);
- fi->msg_type = htonl(msg_type);
-
- sdata->stats.rx_packets++;
- sdata->stats.rx_bytes += skb->len;
-
- skb_set_mac_header(skb, 0);
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- skb->pkt_type = PACKET_OTHERHOST;
- skb->protocol = htons(ETH_P_802_2);
- memset(skb->cb, 0, sizeof(skb->cb));
- netif_rx(skb);
-}
-
-int ieee80211_radar_status(struct ieee80211_hw *hw, int channel,
- int radar, int radar_type)
-{
- struct sk_buff *skb;
- struct ieee80211_radar_info *msg;
- struct ieee80211_local *local = hw_to_local(hw);
-
- if (!local->apdev)
- return 0;
-
- skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
- sizeof(struct ieee80211_radar_info));
-
- if (!skb)
- return -ENOMEM;
- skb_reserve(skb, sizeof(struct ieee80211_frame_info));
-
- msg = (struct ieee80211_radar_info *)
- skb_put(skb, sizeof(struct ieee80211_radar_info));
- msg->channel = channel;
- msg->radar = radar;
- msg->radar_type = radar_type;
-
- ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_radar);
- return 0;
-}
-EXPORT_SYMBOL(ieee80211_radar_status);
-
-
static void ieee80211_stat_refresh(unsigned long data)
{
struct ieee80211_local *local = (struct ieee80211_local *) data;
add_timer(&local->stat_timer);
}
-
void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_tx_status *status)
}
}
-
/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
* make a prepared TX frame (one that has been given to hw) to look like brand
* new IEEE 802.11 frame that is ready to go through TX processing again.
}
}
-
void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ieee80211_tx_status *status)
{
}
EXPORT_SYMBOL(ieee80211_tx_status);
-
-int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
-{
- struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
- struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- struct sta_info *sta;
-
- if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
- return 0;
-
- /* Create STA entry for the new peer */
- sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
- if (!sta)
- return -ENOMEM;
- sta_info_put(sta);
-
- /* Remove STA entry for the old peer */
- sta = sta_info_get(local, sdata->u.wds.remote_addr);
- if (sta) {
- sta_info_put(sta);
- sta_info_free(sta, 0);
- } else {
- printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
- "peer " MAC_FMT "\n",
- dev->name, MAC_ARG(sdata->u.wds.remote_addr));
- }
-
- /* Update WDS link data */
- memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
-
- return 0;
-}
-
-/* Must not be called for mdev and apdev */
-void ieee80211_if_setup(struct net_device *dev)
-{
- ether_setup(dev);
- dev->hard_start_xmit = ieee80211_subif_start_xmit;
- dev->wireless_handlers = &ieee80211_iw_handler_def;
- dev->set_multicast_list = ieee80211_set_multicast_list;
- dev->change_mtu = ieee80211_change_mtu;
- dev->get_stats = ieee80211_get_stats;
- dev->open = ieee80211_open;
- dev->stop = ieee80211_stop;
- dev->uninit = ieee80211_if_reinit;
- dev->destructor = ieee80211_if_free;
-}
-
-void ieee80211_if_mgmt_setup(struct net_device *dev)
-{
- ether_setup(dev);
- dev->hard_start_xmit = ieee80211_mgmt_start_xmit;
- dev->change_mtu = ieee80211_change_mtu_apdev;
- dev->get_stats = ieee80211_get_stats;
- dev->open = ieee80211_mgmt_open;
- dev->stop = ieee80211_mgmt_stop;
- dev->type = ARPHRD_IEEE80211_PRISM;
- dev->hard_header_parse = header_parse_80211;
- dev->uninit = ieee80211_if_reinit;
- dev->destructor = ieee80211_if_free;
-}
-
struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
const struct ieee80211_ops *ops)
{
return 0;
}
-
static void __exit ieee80211_exit(void)
{
ieee80211_wme_unregister();
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff