obj-$(CONFIG_MAC802154) += mac802154.o
mac802154-objs := main.o rx.o tx.o mac_cmd.o mib.o \
- monitor.o wpan.o llsec.o
+ monitor.o iface.o llsec.o
ccflags-y += -D__CHECK_ENDIAN__
--- /dev/null
+/*
+ * Copyright 2007-2012 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Written by:
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Sergey Lapin <slapin@ossfans.org>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/netdevice.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+
+#include <net/rtnetlink.h>
+#include <linux/nl802154.h>
+#include <net/af_ieee802154.h>
+#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/ieee802154.h>
+#include <net/wpan-phy.h>
+
+#include "ieee802154_i.h"
+
+static int mac802154_wpan_update_llsec(struct net_device *dev)
+{
+ struct mac802154_sub_if_data *priv = netdev_priv(dev);
+ struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
+ int rc = 0;
+
+ if (ops->llsec) {
+ struct ieee802154_llsec_params params;
+ int changed = 0;
+
+ params.pan_id = priv->pan_id;
+ changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
+
+ params.hwaddr = priv->extended_addr;
+ changed |= IEEE802154_LLSEC_PARAM_HWADDR;
+
+ rc = ops->llsec->set_params(dev, ¶ms, changed);
+ }
+
+ return rc;
+}
+
+static int
+mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct mac802154_sub_if_data *priv = netdev_priv(dev);
+ struct sockaddr_ieee802154 *sa =
+ (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
+ int err = -ENOIOCTLCMD;
+
+ spin_lock_bh(&priv->mib_lock);
+
+ switch (cmd) {
+ case SIOCGIFADDR:
+ {
+ u16 pan_id, short_addr;
+
+ pan_id = le16_to_cpu(priv->pan_id);
+ short_addr = le16_to_cpu(priv->short_addr);
+ if (pan_id == IEEE802154_PANID_BROADCAST ||
+ short_addr == IEEE802154_ADDR_BROADCAST) {
+ err = -EADDRNOTAVAIL;
+ break;
+ }
+
+ sa->family = AF_IEEE802154;
+ sa->addr.addr_type = IEEE802154_ADDR_SHORT;
+ sa->addr.pan_id = pan_id;
+ sa->addr.short_addr = short_addr;
+
+ err = 0;
+ break;
+ }
+ case SIOCSIFADDR:
+ dev_warn(&dev->dev,
+ "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
+ if (sa->family != AF_IEEE802154 ||
+ sa->addr.addr_type != IEEE802154_ADDR_SHORT ||
+ sa->addr.pan_id == IEEE802154_PANID_BROADCAST ||
+ sa->addr.short_addr == IEEE802154_ADDR_BROADCAST ||
+ sa->addr.short_addr == IEEE802154_ADDR_UNDEF) {
+ err = -EINVAL;
+ break;
+ }
+
+ priv->pan_id = cpu_to_le16(sa->addr.pan_id);
+ priv->short_addr = cpu_to_le16(sa->addr.short_addr);
+
+ err = mac802154_wpan_update_llsec(dev);
+ break;
+ }
+
+ spin_unlock_bh(&priv->mib_lock);
+ return err;
+}
+
+static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+
+ if (netif_running(dev))
+ return -EBUSY;
+
+ /* FIXME: validate addr */
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+ mac802154_dev_set_ieee_addr(dev);
+ return mac802154_wpan_update_llsec(dev);
+}
+
+int mac802154_set_mac_params(struct net_device *dev,
+ const struct ieee802154_mac_params *params)
+{
+ struct mac802154_sub_if_data *priv = netdev_priv(dev);
+
+ mutex_lock(&priv->hw->slaves_mtx);
+ priv->mac_params = *params;
+ mutex_unlock(&priv->hw->slaves_mtx);
+
+ return 0;
+}
+
+void mac802154_get_mac_params(struct net_device *dev,
+ struct ieee802154_mac_params *params)
+{
+ struct mac802154_sub_if_data *priv = netdev_priv(dev);
+
+ mutex_lock(&priv->hw->slaves_mtx);
+ *params = priv->mac_params;
+ mutex_unlock(&priv->hw->slaves_mtx);
+}
+
+static int mac802154_wpan_open(struct net_device *dev)
+{
+ int rc;
+ struct mac802154_sub_if_data *priv = netdev_priv(dev);
+ struct wpan_phy *phy = priv->hw->phy;
+
+ rc = mac802154_slave_open(dev);
+ if (rc < 0)
+ return rc;
+
+ mutex_lock(&phy->pib_lock);
+
+ if (phy->set_txpower) {
+ rc = phy->set_txpower(phy, priv->mac_params.transmit_power);
+ if (rc < 0)
+ goto out;
+ }
+
+ if (phy->set_lbt) {
+ rc = phy->set_lbt(phy, priv->mac_params.lbt);
+ if (rc < 0)
+ goto out;
+ }
+
+ if (phy->set_cca_mode) {
+ rc = phy->set_cca_mode(phy, priv->mac_params.cca_mode);
+ if (rc < 0)
+ goto out;
+ }
+
+ if (phy->set_cca_ed_level) {
+ rc = phy->set_cca_ed_level(phy, priv->mac_params.cca_ed_level);
+ if (rc < 0)
+ goto out;
+ }
+
+ if (phy->set_csma_params) {
+ rc = phy->set_csma_params(phy, priv->mac_params.min_be,
+ priv->mac_params.max_be,
+ priv->mac_params.csma_retries);
+ if (rc < 0)
+ goto out;
+ }
+
+ if (phy->set_frame_retries) {
+ rc = phy->set_frame_retries(phy,
+ priv->mac_params.frame_retries);
+ if (rc < 0)
+ goto out;
+ }
+
+ mutex_unlock(&phy->pib_lock);
+ return 0;
+
+out:
+ mutex_unlock(&phy->pib_lock);
+ return rc;
+}
+
+static int mac802154_set_header_security(struct mac802154_sub_if_data *priv,
+ struct ieee802154_hdr *hdr,
+ const struct ieee802154_mac_cb *cb)
+{
+ struct ieee802154_llsec_params params;
+ u8 level;
+
+ mac802154_llsec_get_params(&priv->sec, ¶ms);
+
+ if (!params.enabled && cb->secen_override && cb->secen)
+ return -EINVAL;
+ if (!params.enabled ||
+ (cb->secen_override && !cb->secen) ||
+ !params.out_level)
+ return 0;
+ if (cb->seclevel_override && !cb->seclevel)
+ return -EINVAL;
+
+ level = cb->seclevel_override ? cb->seclevel : params.out_level;
+
+ hdr->fc.security_enabled = 1;
+ hdr->sec.level = level;
+ hdr->sec.key_id_mode = params.out_key.mode;
+ if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX)
+ hdr->sec.short_src = params.out_key.short_source;
+ else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX)
+ hdr->sec.extended_src = params.out_key.extended_source;
+ hdr->sec.key_id = params.out_key.id;
+
+ return 0;
+}
+
+static int mac802154_header_create(struct sk_buff *skb,
+ struct net_device *dev,
+ unsigned short type,
+ const void *daddr,
+ const void *saddr,
+ unsigned len)
+{
+ struct ieee802154_hdr hdr;
+ struct mac802154_sub_if_data *priv = netdev_priv(dev);
+ struct ieee802154_mac_cb *cb = mac_cb(skb);
+ int hlen;
+
+ if (!daddr)
+ return -EINVAL;
+
+ memset(&hdr.fc, 0, sizeof(hdr.fc));
+ hdr.fc.type = cb->type;
+ hdr.fc.security_enabled = cb->secen;
+ hdr.fc.ack_request = cb->ackreq;
+ hdr.seq = ieee802154_mlme_ops(dev)->get_dsn(dev);
+
+ if (mac802154_set_header_security(priv, &hdr, cb) < 0)
+ return -EINVAL;
+
+ if (!saddr) {
+ spin_lock_bh(&priv->mib_lock);
+
+ if (priv->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
+ priv->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
+ priv->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
+ hdr.source.mode = IEEE802154_ADDR_LONG;
+ hdr.source.extended_addr = priv->extended_addr;
+ } else {
+ hdr.source.mode = IEEE802154_ADDR_SHORT;
+ hdr.source.short_addr = priv->short_addr;
+ }
+
+ hdr.source.pan_id = priv->pan_id;
+
+ spin_unlock_bh(&priv->mib_lock);
+ } else {
+ hdr.source = *(const struct ieee802154_addr *)saddr;
+ }
+
+ hdr.dest = *(const struct ieee802154_addr *)daddr;
+
+ hlen = ieee802154_hdr_push(skb, &hdr);
+ if (hlen < 0)
+ return -EINVAL;
+
+ skb_reset_mac_header(skb);
+ skb->mac_len = hlen;
+
+ if (len > ieee802154_max_payload(&hdr))
+ return -EMSGSIZE;
+
+ return hlen;
+}
+
+static int
+mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+ struct ieee802154_hdr hdr;
+ struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr;
+
+ if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
+ pr_debug("malformed packet\n");
+ return 0;
+ }
+
+ *addr = hdr.source;
+ return sizeof(*addr);
+}
+
+static netdev_tx_t
+mac802154_wpan_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct mac802154_sub_if_data *priv;
+ u8 chan, page;
+ int rc;
+
+ priv = netdev_priv(dev);
+
+ spin_lock_bh(&priv->mib_lock);
+ chan = priv->chan;
+ page = priv->page;
+ spin_unlock_bh(&priv->mib_lock);
+
+ if (chan == MAC802154_CHAN_NONE ||
+ page >= WPAN_NUM_PAGES ||
+ chan >= WPAN_NUM_CHANNELS) {
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ rc = mac802154_llsec_encrypt(&priv->sec, skb);
+ if (rc) {
+ pr_warn("encryption failed: %i\n", rc);
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ skb->skb_iif = dev->ifindex;
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+
+ return mac802154_tx(priv->hw, skb, page, chan);
+}
+
+static struct header_ops mac802154_header_ops = {
+ .create = mac802154_header_create,
+ .parse = mac802154_header_parse,
+};
+
+static const struct net_device_ops mac802154_wpan_ops = {
+ .ndo_open = mac802154_wpan_open,
+ .ndo_stop = mac802154_slave_close,
+ .ndo_start_xmit = mac802154_wpan_xmit,
+ .ndo_do_ioctl = mac802154_wpan_ioctl,
+ .ndo_set_mac_address = mac802154_wpan_mac_addr,
+};
+
+static void mac802154_wpan_free(struct net_device *dev)
+{
+ struct mac802154_sub_if_data *priv = netdev_priv(dev);
+
+ mac802154_llsec_destroy(&priv->sec);
+
+ free_netdev(dev);
+}
+
+void mac802154_wpan_setup(struct net_device *dev)
+{
+ struct mac802154_sub_if_data *priv;
+
+ dev->addr_len = IEEE802154_ADDR_LEN;
+ memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
+
+ dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN;
+ dev->header_ops = &mac802154_header_ops;
+ dev->needed_tailroom = 2 + 16; /* FCS + MIC */
+ dev->mtu = IEEE802154_MTU;
+ dev->tx_queue_len = 300;
+ dev->type = ARPHRD_IEEE802154;
+ dev->flags = IFF_NOARP | IFF_BROADCAST;
+ dev->watchdog_timeo = 0;
+
+ dev->destructor = mac802154_wpan_free;
+ dev->netdev_ops = &mac802154_wpan_ops;
+ dev->ml_priv = &mac802154_mlme_wpan;
+
+ priv = netdev_priv(dev);
+ priv->type = IEEE802154_DEV_WPAN;
+
+ priv->chan = MAC802154_CHAN_NONE;
+ priv->page = 0;
+
+ spin_lock_init(&priv->mib_lock);
+ mutex_init(&priv->sec_mtx);
+
+ get_random_bytes(&priv->bsn, 1);
+ get_random_bytes(&priv->dsn, 1);
+
+ /* defaults per 802.15.4-2011 */
+ priv->mac_params.min_be = 3;
+ priv->mac_params.max_be = 5;
+ priv->mac_params.csma_retries = 4;
+ priv->mac_params.frame_retries = -1; /* for compatibility, actual default is 3 */
+
+ priv->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
+ priv->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
+
+ mac802154_llsec_init(&priv->sec);
+}
+
+static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
+{
+ return netif_rx_ni(skb);
+}
+
+static int
+mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb,
+ const struct ieee802154_hdr *hdr)
+{
+ __le16 span, sshort;
+ int rc;
+
+ pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
+
+ spin_lock_bh(&sdata->mib_lock);
+
+ span = sdata->pan_id;
+ sshort = sdata->short_addr;
+
+ switch (mac_cb(skb)->dest.mode) {
+ case IEEE802154_ADDR_NONE:
+ if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE)
+ /* FIXME: check if we are PAN coordinator */
+ skb->pkt_type = PACKET_OTHERHOST;
+ else
+ /* ACK comes with both addresses empty */
+ skb->pkt_type = PACKET_HOST;
+ break;
+ case IEEE802154_ADDR_LONG:
+ if (mac_cb(skb)->dest.pan_id != span &&
+ mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
+ skb->pkt_type = PACKET_OTHERHOST;
+ else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr)
+ skb->pkt_type = PACKET_HOST;
+ else
+ skb->pkt_type = PACKET_OTHERHOST;
+ break;
+ case IEEE802154_ADDR_SHORT:
+ if (mac_cb(skb)->dest.pan_id != span &&
+ mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
+ skb->pkt_type = PACKET_OTHERHOST;
+ else if (mac_cb(skb)->dest.short_addr == sshort)
+ skb->pkt_type = PACKET_HOST;
+ else if (mac_cb(skb)->dest.short_addr ==
+ cpu_to_le16(IEEE802154_ADDR_BROADCAST))
+ skb->pkt_type = PACKET_BROADCAST;
+ else
+ skb->pkt_type = PACKET_OTHERHOST;
+ break;
+ default:
+ spin_unlock_bh(&sdata->mib_lock);
+ pr_debug("invalid dest mode\n");
+ kfree_skb(skb);
+ return NET_RX_DROP;
+ }
+
+ spin_unlock_bh(&sdata->mib_lock);
+
+ skb->dev = sdata->dev;
+
+ rc = mac802154_llsec_decrypt(&sdata->sec, skb);
+ if (rc) {
+ pr_debug("decryption failed: %i\n", rc);
+ goto fail;
+ }
+
+ sdata->dev->stats.rx_packets++;
+ sdata->dev->stats.rx_bytes += skb->len;
+
+ switch (mac_cb(skb)->type) {
+ case IEEE802154_FC_TYPE_DATA:
+ return mac802154_process_data(sdata->dev, skb);
+ default:
+ pr_warn("ieee802154: bad frame received (type = %d)\n",
+ mac_cb(skb)->type);
+ goto fail;
+ }
+
+fail:
+ kfree_skb(skb);
+ return NET_RX_DROP;
+}
+
+static void mac802154_print_addr(const char *name,
+ const struct ieee802154_addr *addr)
+{
+ if (addr->mode == IEEE802154_ADDR_NONE)
+ pr_debug("%s not present\n", name);
+
+ pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id));
+ if (addr->mode == IEEE802154_ADDR_SHORT) {
+ pr_debug("%s is short: %04x\n", name,
+ le16_to_cpu(addr->short_addr));
+ } else {
+ u64 hw = swab64((__force u64) addr->extended_addr);
+
+ pr_debug("%s is hardware: %8phC\n", name, &hw);
+ }
+}
+
+static int mac802154_parse_frame_start(struct sk_buff *skb,
+ struct ieee802154_hdr *hdr)
+{
+ int hlen;
+ struct ieee802154_mac_cb *cb = mac_cb_init(skb);
+
+ hlen = ieee802154_hdr_pull(skb, hdr);
+ if (hlen < 0)
+ return -EINVAL;
+
+ skb->mac_len = hlen;
+
+ pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc),
+ hdr->seq);
+
+ cb->type = hdr->fc.type;
+ cb->ackreq = hdr->fc.ack_request;
+ cb->secen = hdr->fc.security_enabled;
+
+ mac802154_print_addr("destination", &hdr->dest);
+ mac802154_print_addr("source", &hdr->source);
+
+ cb->source = hdr->source;
+ cb->dest = hdr->dest;
+
+ if (hdr->fc.security_enabled) {
+ u64 key;
+
+ pr_debug("seclevel %i\n", hdr->sec.level);
+
+ switch (hdr->sec.key_id_mode) {
+ case IEEE802154_SCF_KEY_IMPLICIT:
+ pr_debug("implicit key\n");
+ break;
+
+ case IEEE802154_SCF_KEY_INDEX:
+ pr_debug("key %02x\n", hdr->sec.key_id);
+ break;
+
+ case IEEE802154_SCF_KEY_SHORT_INDEX:
+ pr_debug("key %04x:%04x %02x\n",
+ le32_to_cpu(hdr->sec.short_src) >> 16,
+ le32_to_cpu(hdr->sec.short_src) & 0xffff,
+ hdr->sec.key_id);
+ break;
+
+ case IEEE802154_SCF_KEY_HW_INDEX:
+ key = swab64((__force u64) hdr->sec.extended_src);
+ pr_debug("key source %8phC %02x\n", &key,
+ hdr->sec.key_id);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+void mac802154_wpans_rx(struct mac802154_priv *priv, struct sk_buff *skb)
+{
+ int ret;
+ struct mac802154_sub_if_data *sdata;
+ struct ieee802154_hdr hdr;
+
+ ret = mac802154_parse_frame_start(skb, &hdr);
+ if (ret) {
+ pr_debug("got invalid frame\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &priv->slaves, list) {
+ if (sdata->type != IEEE802154_DEV_WPAN ||
+ !netif_running(sdata->dev))
+ continue;
+
+ mac802154_subif_frame(sdata, skb, &hdr);
+ skb = NULL;
+ break;
+ }
+ rcu_read_unlock();
+
+ if (skb)
+ kfree_skb(skb);
+}
+++ /dev/null
-/*
- * Copyright 2007-2012 Siemens AG
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * Written by:
- * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
- * Sergey Lapin <slapin@ossfans.org>
- * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
- * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
- */
-
-#include <linux/netdevice.h>
-#include <linux/module.h>
-#include <linux/if_arp.h>
-
-#include <net/rtnetlink.h>
-#include <linux/nl802154.h>
-#include <net/af_ieee802154.h>
-#include <net/mac802154.h>
-#include <net/ieee802154_netdev.h>
-#include <net/ieee802154.h>
-#include <net/wpan-phy.h>
-
-#include "ieee802154_i.h"
-
-static int mac802154_wpan_update_llsec(struct net_device *dev)
-{
- struct mac802154_sub_if_data *priv = netdev_priv(dev);
- struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
- int rc = 0;
-
- if (ops->llsec) {
- struct ieee802154_llsec_params params;
- int changed = 0;
-
- params.pan_id = priv->pan_id;
- changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
-
- params.hwaddr = priv->extended_addr;
- changed |= IEEE802154_LLSEC_PARAM_HWADDR;
-
- rc = ops->llsec->set_params(dev, ¶ms, changed);
- }
-
- return rc;
-}
-
-static int
-mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
- struct mac802154_sub_if_data *priv = netdev_priv(dev);
- struct sockaddr_ieee802154 *sa =
- (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
- int err = -ENOIOCTLCMD;
-
- spin_lock_bh(&priv->mib_lock);
-
- switch (cmd) {
- case SIOCGIFADDR:
- {
- u16 pan_id, short_addr;
-
- pan_id = le16_to_cpu(priv->pan_id);
- short_addr = le16_to_cpu(priv->short_addr);
- if (pan_id == IEEE802154_PANID_BROADCAST ||
- short_addr == IEEE802154_ADDR_BROADCAST) {
- err = -EADDRNOTAVAIL;
- break;
- }
-
- sa->family = AF_IEEE802154;
- sa->addr.addr_type = IEEE802154_ADDR_SHORT;
- sa->addr.pan_id = pan_id;
- sa->addr.short_addr = short_addr;
-
- err = 0;
- break;
- }
- case SIOCSIFADDR:
- dev_warn(&dev->dev,
- "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
- if (sa->family != AF_IEEE802154 ||
- sa->addr.addr_type != IEEE802154_ADDR_SHORT ||
- sa->addr.pan_id == IEEE802154_PANID_BROADCAST ||
- sa->addr.short_addr == IEEE802154_ADDR_BROADCAST ||
- sa->addr.short_addr == IEEE802154_ADDR_UNDEF) {
- err = -EINVAL;
- break;
- }
-
- priv->pan_id = cpu_to_le16(sa->addr.pan_id);
- priv->short_addr = cpu_to_le16(sa->addr.short_addr);
-
- err = mac802154_wpan_update_llsec(dev);
- break;
- }
-
- spin_unlock_bh(&priv->mib_lock);
- return err;
-}
-
-static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
-{
- struct sockaddr *addr = p;
-
- if (netif_running(dev))
- return -EBUSY;
-
- /* FIXME: validate addr */
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
- mac802154_dev_set_ieee_addr(dev);
- return mac802154_wpan_update_llsec(dev);
-}
-
-int mac802154_set_mac_params(struct net_device *dev,
- const struct ieee802154_mac_params *params)
-{
- struct mac802154_sub_if_data *priv = netdev_priv(dev);
-
- mutex_lock(&priv->hw->slaves_mtx);
- priv->mac_params = *params;
- mutex_unlock(&priv->hw->slaves_mtx);
-
- return 0;
-}
-
-void mac802154_get_mac_params(struct net_device *dev,
- struct ieee802154_mac_params *params)
-{
- struct mac802154_sub_if_data *priv = netdev_priv(dev);
-
- mutex_lock(&priv->hw->slaves_mtx);
- *params = priv->mac_params;
- mutex_unlock(&priv->hw->slaves_mtx);
-}
-
-static int mac802154_wpan_open(struct net_device *dev)
-{
- int rc;
- struct mac802154_sub_if_data *priv = netdev_priv(dev);
- struct wpan_phy *phy = priv->hw->phy;
-
- rc = mac802154_slave_open(dev);
- if (rc < 0)
- return rc;
-
- mutex_lock(&phy->pib_lock);
-
- if (phy->set_txpower) {
- rc = phy->set_txpower(phy, priv->mac_params.transmit_power);
- if (rc < 0)
- goto out;
- }
-
- if (phy->set_lbt) {
- rc = phy->set_lbt(phy, priv->mac_params.lbt);
- if (rc < 0)
- goto out;
- }
-
- if (phy->set_cca_mode) {
- rc = phy->set_cca_mode(phy, priv->mac_params.cca_mode);
- if (rc < 0)
- goto out;
- }
-
- if (phy->set_cca_ed_level) {
- rc = phy->set_cca_ed_level(phy, priv->mac_params.cca_ed_level);
- if (rc < 0)
- goto out;
- }
-
- if (phy->set_csma_params) {
- rc = phy->set_csma_params(phy, priv->mac_params.min_be,
- priv->mac_params.max_be,
- priv->mac_params.csma_retries);
- if (rc < 0)
- goto out;
- }
-
- if (phy->set_frame_retries) {
- rc = phy->set_frame_retries(phy,
- priv->mac_params.frame_retries);
- if (rc < 0)
- goto out;
- }
-
- mutex_unlock(&phy->pib_lock);
- return 0;
-
-out:
- mutex_unlock(&phy->pib_lock);
- return rc;
-}
-
-static int mac802154_set_header_security(struct mac802154_sub_if_data *priv,
- struct ieee802154_hdr *hdr,
- const struct ieee802154_mac_cb *cb)
-{
- struct ieee802154_llsec_params params;
- u8 level;
-
- mac802154_llsec_get_params(&priv->sec, ¶ms);
-
- if (!params.enabled && cb->secen_override && cb->secen)
- return -EINVAL;
- if (!params.enabled ||
- (cb->secen_override && !cb->secen) ||
- !params.out_level)
- return 0;
- if (cb->seclevel_override && !cb->seclevel)
- return -EINVAL;
-
- level = cb->seclevel_override ? cb->seclevel : params.out_level;
-
- hdr->fc.security_enabled = 1;
- hdr->sec.level = level;
- hdr->sec.key_id_mode = params.out_key.mode;
- if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX)
- hdr->sec.short_src = params.out_key.short_source;
- else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX)
- hdr->sec.extended_src = params.out_key.extended_source;
- hdr->sec.key_id = params.out_key.id;
-
- return 0;
-}
-
-static int mac802154_header_create(struct sk_buff *skb,
- struct net_device *dev,
- unsigned short type,
- const void *daddr,
- const void *saddr,
- unsigned len)
-{
- struct ieee802154_hdr hdr;
- struct mac802154_sub_if_data *priv = netdev_priv(dev);
- struct ieee802154_mac_cb *cb = mac_cb(skb);
- int hlen;
-
- if (!daddr)
- return -EINVAL;
-
- memset(&hdr.fc, 0, sizeof(hdr.fc));
- hdr.fc.type = cb->type;
- hdr.fc.security_enabled = cb->secen;
- hdr.fc.ack_request = cb->ackreq;
- hdr.seq = ieee802154_mlme_ops(dev)->get_dsn(dev);
-
- if (mac802154_set_header_security(priv, &hdr, cb) < 0)
- return -EINVAL;
-
- if (!saddr) {
- spin_lock_bh(&priv->mib_lock);
-
- if (priv->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
- priv->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
- priv->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
- hdr.source.mode = IEEE802154_ADDR_LONG;
- hdr.source.extended_addr = priv->extended_addr;
- } else {
- hdr.source.mode = IEEE802154_ADDR_SHORT;
- hdr.source.short_addr = priv->short_addr;
- }
-
- hdr.source.pan_id = priv->pan_id;
-
- spin_unlock_bh(&priv->mib_lock);
- } else {
- hdr.source = *(const struct ieee802154_addr *)saddr;
- }
-
- hdr.dest = *(const struct ieee802154_addr *)daddr;
-
- hlen = ieee802154_hdr_push(skb, &hdr);
- if (hlen < 0)
- return -EINVAL;
-
- skb_reset_mac_header(skb);
- skb->mac_len = hlen;
-
- if (len > ieee802154_max_payload(&hdr))
- return -EMSGSIZE;
-
- return hlen;
-}
-
-static int
-mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
-{
- struct ieee802154_hdr hdr;
- struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr;
-
- if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
- pr_debug("malformed packet\n");
- return 0;
- }
-
- *addr = hdr.source;
- return sizeof(*addr);
-}
-
-static netdev_tx_t
-mac802154_wpan_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct mac802154_sub_if_data *priv;
- u8 chan, page;
- int rc;
-
- priv = netdev_priv(dev);
-
- spin_lock_bh(&priv->mib_lock);
- chan = priv->chan;
- page = priv->page;
- spin_unlock_bh(&priv->mib_lock);
-
- if (chan == MAC802154_CHAN_NONE ||
- page >= WPAN_NUM_PAGES ||
- chan >= WPAN_NUM_CHANNELS) {
- kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- rc = mac802154_llsec_encrypt(&priv->sec, skb);
- if (rc) {
- pr_warn("encryption failed: %i\n", rc);
- kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- skb->skb_iif = dev->ifindex;
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
-
- return mac802154_tx(priv->hw, skb, page, chan);
-}
-
-static struct header_ops mac802154_header_ops = {
- .create = mac802154_header_create,
- .parse = mac802154_header_parse,
-};
-
-static const struct net_device_ops mac802154_wpan_ops = {
- .ndo_open = mac802154_wpan_open,
- .ndo_stop = mac802154_slave_close,
- .ndo_start_xmit = mac802154_wpan_xmit,
- .ndo_do_ioctl = mac802154_wpan_ioctl,
- .ndo_set_mac_address = mac802154_wpan_mac_addr,
-};
-
-static void mac802154_wpan_free(struct net_device *dev)
-{
- struct mac802154_sub_if_data *priv = netdev_priv(dev);
-
- mac802154_llsec_destroy(&priv->sec);
-
- free_netdev(dev);
-}
-
-void mac802154_wpan_setup(struct net_device *dev)
-{
- struct mac802154_sub_if_data *priv;
-
- dev->addr_len = IEEE802154_ADDR_LEN;
- memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
-
- dev->hard_header_len = MAC802154_FRAME_HARD_HEADER_LEN;
- dev->header_ops = &mac802154_header_ops;
- dev->needed_tailroom = 2 + 16; /* FCS + MIC */
- dev->mtu = IEEE802154_MTU;
- dev->tx_queue_len = 300;
- dev->type = ARPHRD_IEEE802154;
- dev->flags = IFF_NOARP | IFF_BROADCAST;
- dev->watchdog_timeo = 0;
-
- dev->destructor = mac802154_wpan_free;
- dev->netdev_ops = &mac802154_wpan_ops;
- dev->ml_priv = &mac802154_mlme_wpan;
-
- priv = netdev_priv(dev);
- priv->type = IEEE802154_DEV_WPAN;
-
- priv->chan = MAC802154_CHAN_NONE;
- priv->page = 0;
-
- spin_lock_init(&priv->mib_lock);
- mutex_init(&priv->sec_mtx);
-
- get_random_bytes(&priv->bsn, 1);
- get_random_bytes(&priv->dsn, 1);
-
- /* defaults per 802.15.4-2011 */
- priv->mac_params.min_be = 3;
- priv->mac_params.max_be = 5;
- priv->mac_params.csma_retries = 4;
- priv->mac_params.frame_retries = -1; /* for compatibility, actual default is 3 */
-
- priv->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
- priv->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
-
- mac802154_llsec_init(&priv->sec);
-}
-
-static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
-{
- return netif_rx_ni(skb);
-}
-
-static int
-mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb,
- const struct ieee802154_hdr *hdr)
-{
- __le16 span, sshort;
- int rc;
-
- pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
-
- spin_lock_bh(&sdata->mib_lock);
-
- span = sdata->pan_id;
- sshort = sdata->short_addr;
-
- switch (mac_cb(skb)->dest.mode) {
- case IEEE802154_ADDR_NONE:
- if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE)
- /* FIXME: check if we are PAN coordinator */
- skb->pkt_type = PACKET_OTHERHOST;
- else
- /* ACK comes with both addresses empty */
- skb->pkt_type = PACKET_HOST;
- break;
- case IEEE802154_ADDR_LONG:
- if (mac_cb(skb)->dest.pan_id != span &&
- mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
- skb->pkt_type = PACKET_OTHERHOST;
- else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr)
- skb->pkt_type = PACKET_HOST;
- else
- skb->pkt_type = PACKET_OTHERHOST;
- break;
- case IEEE802154_ADDR_SHORT:
- if (mac_cb(skb)->dest.pan_id != span &&
- mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
- skb->pkt_type = PACKET_OTHERHOST;
- else if (mac_cb(skb)->dest.short_addr == sshort)
- skb->pkt_type = PACKET_HOST;
- else if (mac_cb(skb)->dest.short_addr ==
- cpu_to_le16(IEEE802154_ADDR_BROADCAST))
- skb->pkt_type = PACKET_BROADCAST;
- else
- skb->pkt_type = PACKET_OTHERHOST;
- break;
- default:
- spin_unlock_bh(&sdata->mib_lock);
- pr_debug("invalid dest mode\n");
- kfree_skb(skb);
- return NET_RX_DROP;
- }
-
- spin_unlock_bh(&sdata->mib_lock);
-
- skb->dev = sdata->dev;
-
- rc = mac802154_llsec_decrypt(&sdata->sec, skb);
- if (rc) {
- pr_debug("decryption failed: %i\n", rc);
- goto fail;
- }
-
- sdata->dev->stats.rx_packets++;
- sdata->dev->stats.rx_bytes += skb->len;
-
- switch (mac_cb(skb)->type) {
- case IEEE802154_FC_TYPE_DATA:
- return mac802154_process_data(sdata->dev, skb);
- default:
- pr_warn("ieee802154: bad frame received (type = %d)\n",
- mac_cb(skb)->type);
- goto fail;
- }
-
-fail:
- kfree_skb(skb);
- return NET_RX_DROP;
-}
-
-static void mac802154_print_addr(const char *name,
- const struct ieee802154_addr *addr)
-{
- if (addr->mode == IEEE802154_ADDR_NONE)
- pr_debug("%s not present\n", name);
-
- pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id));
- if (addr->mode == IEEE802154_ADDR_SHORT) {
- pr_debug("%s is short: %04x\n", name,
- le16_to_cpu(addr->short_addr));
- } else {
- u64 hw = swab64((__force u64) addr->extended_addr);
-
- pr_debug("%s is hardware: %8phC\n", name, &hw);
- }
-}
-
-static int mac802154_parse_frame_start(struct sk_buff *skb,
- struct ieee802154_hdr *hdr)
-{
- int hlen;
- struct ieee802154_mac_cb *cb = mac_cb_init(skb);
-
- hlen = ieee802154_hdr_pull(skb, hdr);
- if (hlen < 0)
- return -EINVAL;
-
- skb->mac_len = hlen;
-
- pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc),
- hdr->seq);
-
- cb->type = hdr->fc.type;
- cb->ackreq = hdr->fc.ack_request;
- cb->secen = hdr->fc.security_enabled;
-
- mac802154_print_addr("destination", &hdr->dest);
- mac802154_print_addr("source", &hdr->source);
-
- cb->source = hdr->source;
- cb->dest = hdr->dest;
-
- if (hdr->fc.security_enabled) {
- u64 key;
-
- pr_debug("seclevel %i\n", hdr->sec.level);
-
- switch (hdr->sec.key_id_mode) {
- case IEEE802154_SCF_KEY_IMPLICIT:
- pr_debug("implicit key\n");
- break;
-
- case IEEE802154_SCF_KEY_INDEX:
- pr_debug("key %02x\n", hdr->sec.key_id);
- break;
-
- case IEEE802154_SCF_KEY_SHORT_INDEX:
- pr_debug("key %04x:%04x %02x\n",
- le32_to_cpu(hdr->sec.short_src) >> 16,
- le32_to_cpu(hdr->sec.short_src) & 0xffff,
- hdr->sec.key_id);
- break;
-
- case IEEE802154_SCF_KEY_HW_INDEX:
- key = swab64((__force u64) hdr->sec.extended_src);
- pr_debug("key source %8phC %02x\n", &key,
- hdr->sec.key_id);
- break;
- }
- }
-
- return 0;
-}
-
-void mac802154_wpans_rx(struct mac802154_priv *priv, struct sk_buff *skb)
-{
- int ret;
- struct mac802154_sub_if_data *sdata;
- struct ieee802154_hdr hdr;
-
- ret = mac802154_parse_frame_start(skb, &hdr);
- if (ret) {
- pr_debug("got invalid frame\n");
- kfree_skb(skb);
- return;
- }
-
- rcu_read_lock();
- list_for_each_entry_rcu(sdata, &priv->slaves, list) {
- if (sdata->type != IEEE802154_DEV_WPAN ||
- !netif_running(sdata->dev))
- continue;
-
- mac802154_subif_frame(sdata, skb, &hdr);
- skb = NULL;
- break;
- }
- rcu_read_unlock();
-
- if (skb)
- kfree_skb(skb);
-}
projects / cascardo / linux.git / commitdiff