2012-06-25 17:24:48 -06:00
|
|
|
/*
|
|
|
|
* 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>
|
|
|
|
|
2014-10-25 01:41:00 -06:00
|
|
|
#include "ieee802154_i.h"
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:43 -06:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2012-06-25 17:24:48 -06:00
|
|
|
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:
|
2014-03-14 14:23:59 -06:00
|
|
|
{
|
|
|
|
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) {
|
2012-06-25 17:24:48 -06:00
|
|
|
err = -EADDRNOTAVAIL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
sa->family = AF_IEEE802154;
|
|
|
|
sa->addr.addr_type = IEEE802154_ADDR_SHORT;
|
2014-03-14 14:23:59 -06:00
|
|
|
sa->addr.pan_id = pan_id;
|
|
|
|
sa->addr.short_addr = short_addr;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
|
|
|
err = 0;
|
|
|
|
break;
|
2014-03-14 14:23:59 -06:00
|
|
|
}
|
2012-06-25 17:24:48 -06:00
|
|
|
case SIOCSIFADDR:
|
|
|
|
dev_warn(&dev->dev,
|
2014-08-06 07:31:28 -06:00
|
|
|
"Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\n");
|
2012-06-25 17:24:48 -06:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2014-03-14 14:23:59 -06:00
|
|
|
priv->pan_id = cpu_to_le16(sa->addr.pan_id);
|
|
|
|
priv->short_addr = cpu_to_le16(sa->addr.short_addr);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:43 -06:00
|
|
|
err = mac802154_wpan_update_llsec(dev);
|
2012-06-25 17:24:48 -06:00
|
|
|
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);
|
2014-05-16 09:46:43 -06:00
|
|
|
return mac802154_wpan_update_llsec(dev);
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
2014-03-31 13:37:46 -06:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2014-05-14 09:43:11 -06:00
|
|
|
static int mac802154_wpan_open(struct net_device *dev)
|
2014-03-31 13:37:46 -06:00
|
|
|
{
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2012-06-25 17:24:48 -06:00
|
|
|
static int mac802154_header_create(struct sk_buff *skb,
|
|
|
|
struct net_device *dev,
|
|
|
|
unsigned short type,
|
2014-03-14 14:24:01 -06:00
|
|
|
const void *daddr,
|
|
|
|
const void *saddr,
|
2012-06-25 17:24:48 -06:00
|
|
|
unsigned len)
|
|
|
|
{
|
2014-03-14 14:24:01 -06:00
|
|
|
struct ieee802154_hdr hdr;
|
2012-06-25 17:24:48 -06:00
|
|
|
struct mac802154_sub_if_data *priv = netdev_priv(dev);
|
2014-05-14 09:43:08 -06:00
|
|
|
struct ieee802154_mac_cb *cb = mac_cb(skb);
|
2014-03-14 14:24:01 -06:00
|
|
|
int hlen;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
|
|
|
if (!daddr)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
memset(&hdr.fc, 0, sizeof(hdr.fc));
|
2014-05-14 09:43:08 -06:00
|
|
|
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);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
if (mac802154_set_header_security(priv, &hdr, cb) < 0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2012-06-25 17:24:48 -06:00
|
|
|
if (!saddr) {
|
|
|
|
spin_lock_bh(&priv->mib_lock);
|
|
|
|
|
2014-03-14 14:23:59 -06:00
|
|
|
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)) {
|
2014-03-14 14:24:01 -06:00
|
|
|
hdr.source.mode = IEEE802154_ADDR_LONG;
|
|
|
|
hdr.source.extended_addr = priv->extended_addr;
|
2012-06-25 17:24:48 -06:00
|
|
|
} else {
|
2014-03-14 14:24:01 -06:00
|
|
|
hdr.source.mode = IEEE802154_ADDR_SHORT;
|
|
|
|
hdr.source.short_addr = priv->short_addr;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
hdr.source.pan_id = priv->pan_id;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
|
|
|
spin_unlock_bh(&priv->mib_lock);
|
2014-03-14 14:24:01 -06:00
|
|
|
} else {
|
|
|
|
hdr.source = *(const struct ieee802154_addr *)saddr;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
hdr.dest = *(const struct ieee802154_addr *)daddr;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
hlen = ieee802154_hdr_push(skb, &hdr);
|
|
|
|
if (hlen < 0)
|
|
|
|
return -EINVAL;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2013-10-30 02:18:22 -06:00
|
|
|
skb_reset_mac_header(skb);
|
2014-03-14 14:24:01 -06:00
|
|
|
skb->mac_len = hlen;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-14 09:43:07 -06:00
|
|
|
if (len > ieee802154_max_payload(&hdr))
|
2014-03-14 14:24:04 -06:00
|
|
|
return -EMSGSIZE;
|
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
return hlen;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
|
|
|
|
{
|
2014-03-14 14:24:01 -06:00
|
|
|
struct ieee802154_hdr hdr;
|
|
|
|
struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
|
|
|
|
pr_debug("malformed packet\n");
|
|
|
|
return 0;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
*addr = hdr.source;
|
|
|
|
return sizeof(*addr);
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static netdev_tx_t
|
|
|
|
mac802154_wpan_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct mac802154_sub_if_data *priv;
|
|
|
|
u8 chan, page;
|
2014-05-16 09:46:40 -06:00
|
|
|
int rc;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
|
|
|
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 ||
|
2012-11-29 11:25:10 -07:00
|
|
|
chan >= WPAN_NUM_CHANNELS) {
|
|
|
|
kfree_skb(skb);
|
2012-06-25 17:24:48 -06:00
|
|
|
return NETDEV_TX_OK;
|
2012-11-29 11:25:10 -07:00
|
|
|
}
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
rc = mac802154_llsec_encrypt(&priv->sec, skb);
|
|
|
|
if (rc) {
|
|
|
|
pr_warn("encryption failed: %i\n", rc);
|
|
|
|
kfree_skb(skb);
|
|
|
|
return NETDEV_TX_OK;
|
|
|
|
}
|
|
|
|
|
2012-06-25 17:24:48 -06:00
|
|
|
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 = {
|
2014-03-31 13:37:46 -06:00
|
|
|
.ndo_open = mac802154_wpan_open,
|
2012-06-25 17:24:48 -06:00
|
|
|
.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,
|
|
|
|
};
|
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2012-06-25 17:24:48 -06:00
|
|
|
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;
|
2014-05-16 09:46:40 -06:00
|
|
|
dev->needed_tailroom = 2 + 16; /* FCS + MIC */
|
2012-06-25 17:24:48 -06:00
|
|
|
dev->mtu = IEEE802154_MTU;
|
2013-04-02 22:00:57 -06:00
|
|
|
dev->tx_queue_len = 300;
|
2012-06-25 17:24:48 -06:00
|
|
|
dev->type = ARPHRD_IEEE802154;
|
|
|
|
dev->flags = IFF_NOARP | IFF_BROADCAST;
|
|
|
|
dev->watchdog_timeo = 0;
|
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
dev->destructor = mac802154_wpan_free;
|
2012-06-25 17:24:48 -06:00
|
|
|
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);
|
2014-05-16 09:46:40 -06:00
|
|
|
mutex_init(&priv->sec_mtx);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
|
|
|
get_random_bytes(&priv->bsn, 1);
|
|
|
|
get_random_bytes(&priv->dsn, 1);
|
|
|
|
|
2014-03-31 13:37:46 -06:00
|
|
|
/* 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 */
|
|
|
|
|
2014-03-14 14:23:59 -06:00
|
|
|
priv->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
|
|
|
|
priv->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
|
2014-05-16 09:46:40 -06:00
|
|
|
|
|
|
|
mac802154_llsec_init(&priv->sec);
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
|
|
|
|
{
|
2013-01-01 18:01:10 -07:00
|
|
|
return netif_rx_ni(skb);
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2014-05-16 09:46:40 -06:00
|
|
|
mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb,
|
|
|
|
const struct ieee802154_hdr *hdr)
|
2012-06-25 17:24:48 -06:00
|
|
|
{
|
2014-03-14 14:24:02 -06:00
|
|
|
__le16 span, sshort;
|
2014-05-16 09:46:40 -06:00
|
|
|
int rc;
|
2014-03-14 14:23:59 -06:00
|
|
|
|
2012-06-25 17:24:48 -06:00
|
|
|
pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
|
|
|
|
|
|
|
|
spin_lock_bh(&sdata->mib_lock);
|
|
|
|
|
2014-03-14 14:24:02 -06:00
|
|
|
span = sdata->pan_id;
|
|
|
|
sshort = sdata->short_addr;
|
2014-03-14 14:23:59 -06:00
|
|
|
|
2014-03-14 14:24:02 -06:00
|
|
|
switch (mac_cb(skb)->dest.mode) {
|
2012-06-25 17:24:48 -06:00
|
|
|
case IEEE802154_ADDR_NONE:
|
2014-03-14 14:24:02 -06:00
|
|
|
if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE)
|
2012-06-25 17:24:48 -06:00
|
|
|
/* 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:
|
2014-03-14 14:24:02 -06:00
|
|
|
if (mac_cb(skb)->dest.pan_id != span &&
|
|
|
|
mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
|
2012-06-25 17:24:48 -06:00
|
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
2014-03-14 14:24:02 -06:00
|
|
|
else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr)
|
2012-06-25 17:24:48 -06:00
|
|
|
skb->pkt_type = PACKET_HOST;
|
|
|
|
else
|
|
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
|
|
break;
|
|
|
|
case IEEE802154_ADDR_SHORT:
|
2014-03-14 14:24:02 -06:00
|
|
|
if (mac_cb(skb)->dest.pan_id != span &&
|
|
|
|
mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
|
2012-06-25 17:24:48 -06:00
|
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
2014-03-14 14:24:02 -06:00
|
|
|
else if (mac_cb(skb)->dest.short_addr == sshort)
|
2012-06-25 17:24:48 -06:00
|
|
|
skb->pkt_type = PACKET_HOST;
|
2014-03-14 14:24:02 -06:00
|
|
|
else if (mac_cb(skb)->dest.short_addr ==
|
|
|
|
cpu_to_le16(IEEE802154_ADDR_BROADCAST))
|
2012-06-25 17:24:48 -06:00
|
|
|
skb->pkt_type = PACKET_BROADCAST;
|
|
|
|
else
|
|
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
|
|
break;
|
|
|
|
default:
|
2014-08-19 11:03:30 -06:00
|
|
|
spin_unlock_bh(&sdata->mib_lock);
|
|
|
|
pr_debug("invalid dest mode\n");
|
|
|
|
kfree_skb(skb);
|
|
|
|
return NET_RX_DROP;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_bh(&sdata->mib_lock);
|
|
|
|
|
|
|
|
skb->dev = sdata->dev;
|
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
rc = mac802154_llsec_decrypt(&sdata->sec, skb);
|
|
|
|
if (rc) {
|
|
|
|
pr_debug("decryption failed: %i\n", rc);
|
2014-08-11 05:25:08 -06:00
|
|
|
goto fail;
|
2014-05-16 09:46:40 -06:00
|
|
|
}
|
|
|
|
|
2012-06-25 17:24:48 -06:00
|
|
|
sdata->dev->stats.rx_packets++;
|
|
|
|
sdata->dev->stats.rx_bytes += skb->len;
|
|
|
|
|
2014-05-14 09:43:08 -06:00
|
|
|
switch (mac_cb(skb)->type) {
|
2012-06-25 17:24:48 -06:00
|
|
|
case IEEE802154_FC_TYPE_DATA:
|
|
|
|
return mac802154_process_data(sdata->dev, skb);
|
|
|
|
default:
|
2013-12-18 18:22:26 -07:00
|
|
|
pr_warn("ieee802154: bad frame received (type = %d)\n",
|
2014-05-14 09:43:08 -06:00
|
|
|
mac_cb(skb)->type);
|
2014-08-11 05:25:08 -06:00
|
|
|
goto fail;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
2014-08-11 05:25:08 -06:00
|
|
|
|
|
|
|
fail:
|
|
|
|
kfree_skb(skb);
|
|
|
|
return NET_RX_DROP;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
static void mac802154_print_addr(const char *name,
|
|
|
|
const struct ieee802154_addr *addr)
|
2012-06-25 17:24:48 -06:00
|
|
|
{
|
2014-03-14 14:24:01 -06:00
|
|
|
if (addr->mode == IEEE802154_ADDR_NONE)
|
|
|
|
pr_debug("%s not present\n", name);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
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);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
pr_debug("%s is hardware: %8phC\n", name, &hw);
|
|
|
|
}
|
|
|
|
}
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
static int mac802154_parse_frame_start(struct sk_buff *skb,
|
|
|
|
struct ieee802154_hdr *hdr)
|
2014-03-14 14:24:01 -06:00
|
|
|
{
|
|
|
|
int hlen;
|
2014-05-14 09:43:08 -06:00
|
|
|
struct ieee802154_mac_cb *cb = mac_cb_init(skb);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
hlen = ieee802154_hdr_pull(skb, hdr);
|
2014-03-14 14:24:01 -06:00
|
|
|
if (hlen < 0)
|
|
|
|
return -EINVAL;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
skb->mac_len = hlen;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc),
|
|
|
|
hdr->seq);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
cb->type = hdr->fc.type;
|
|
|
|
cb->ackreq = hdr->fc.ack_request;
|
|
|
|
cb->secen = hdr->fc.security_enabled;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
mac802154_print_addr("destination", &hdr->dest);
|
|
|
|
mac802154_print_addr("source", &hdr->source);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
cb->source = hdr->source;
|
|
|
|
cb->dest = hdr->dest;
|
2014-03-14 14:24:02 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
if (hdr->fc.security_enabled) {
|
2014-03-14 14:24:01 -06:00
|
|
|
u64 key;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
pr_debug("seclevel %i\n", hdr->sec.level);
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
switch (hdr->sec.key_id_mode) {
|
2014-03-14 14:24:01 -06:00
|
|
|
case IEEE802154_SCF_KEY_IMPLICIT:
|
|
|
|
pr_debug("implicit key\n");
|
|
|
|
break;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
case IEEE802154_SCF_KEY_INDEX:
|
2014-05-16 09:46:40 -06:00
|
|
|
pr_debug("key %02x\n", hdr->sec.key_id);
|
2014-03-14 14:24:01 -06:00
|
|
|
break;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
case IEEE802154_SCF_KEY_SHORT_INDEX:
|
|
|
|
pr_debug("key %04x:%04x %02x\n",
|
2014-05-16 09:46:40 -06:00
|
|
|
le32_to_cpu(hdr->sec.short_src) >> 16,
|
|
|
|
le32_to_cpu(hdr->sec.short_src) & 0xffff,
|
|
|
|
hdr->sec.key_id);
|
2014-03-14 14:24:01 -06:00
|
|
|
break;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-03-14 14:24:01 -06:00
|
|
|
case IEEE802154_SCF_KEY_HW_INDEX:
|
2014-05-16 09:46:40 -06:00
|
|
|
key = swab64((__force u64) hdr->sec.extended_src);
|
2014-03-14 14:24:01 -06:00
|
|
|
pr_debug("key source %8phC %02x\n", &key,
|
2014-05-16 09:46:40 -06:00
|
|
|
hdr->sec.key_id);
|
2014-03-14 14:24:01 -06:00
|
|
|
break;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void mac802154_wpans_rx(struct mac802154_priv *priv, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct mac802154_sub_if_data *sdata;
|
2014-05-16 09:46:40 -06:00
|
|
|
struct ieee802154_hdr hdr;
|
2012-06-25 17:24:48 -06:00
|
|
|
|
2014-05-16 09:46:40 -06:00
|
|
|
ret = mac802154_parse_frame_start(skb, &hdr);
|
2012-06-25 17:24:48 -06:00
|
|
|
if (ret) {
|
|
|
|
pr_debug("got invalid frame\n");
|
2014-08-19 11:03:28 -06:00
|
|
|
kfree_skb(skb);
|
2012-06-25 17:24:48 -06:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
list_for_each_entry_rcu(sdata, &priv->slaves, list) {
|
2014-06-11 04:03:07 -06:00
|
|
|
if (sdata->type != IEEE802154_DEV_WPAN ||
|
|
|
|
!netif_running(sdata->dev))
|
2012-06-25 17:24:48 -06:00
|
|
|
continue;
|
|
|
|
|
2014-06-11 04:03:07 -06:00
|
|
|
mac802154_subif_frame(sdata, skb, &hdr);
|
|
|
|
skb = NULL;
|
|
|
|
break;
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|
|
|
|
rcu_read_unlock();
|
2014-06-11 04:03:07 -06:00
|
|
|
|
|
|
|
if (skb)
|
|
|
|
kfree_skb(skb);
|
2012-06-25 17:24:48 -06:00
|
|
|
}
|