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-rw-r--r--net/ieee802154/Kconfig12
-rw-r--r--net/ieee802154/Makefile4
-rw-r--r--net/ieee802154/af802154.h36
-rw-r--r--net/ieee802154/af_ieee802154.c372
-rw-r--r--net/ieee802154/dgram.c394
-rw-r--r--net/ieee802154/raw.c254
6 files changed, 1072 insertions, 0 deletions
diff --git a/net/ieee802154/Kconfig b/net/ieee802154/Kconfig
new file mode 100644
index 00000000000..1c1de97d264
--- /dev/null
+++ b/net/ieee802154/Kconfig
@@ -0,0 +1,12 @@
+config IEEE802154
+ tristate "IEEE Std 802.15.4 Low-Rate Wireless Personal Area Networks support (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ ---help---
+ IEEE Std 802.15.4 defines a low data rate, low power and low
+ complexity short range wireless personal area networks. It was
+ designed to organise networks of sensors, switches, etc automation
+ devices. Maximum allowed data rate is 250 kb/s and typical personal
+ operating space around 10m.
+
+ Say Y here to compile LR-WPAN support into the kernel or say M to
+ compile it as modules.
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
new file mode 100644
index 00000000000..7451c7cc8c8
--- /dev/null
+++ b/net/ieee802154/Makefile
@@ -0,0 +1,4 @@
+obj-$(CONFIG_IEEE802154) += af_802154.o
+af_802154-y := af_ieee802154.o raw.o dgram.o
+
+ccflags-y += -Wall -DDEBUG
diff --git a/net/ieee802154/af802154.h b/net/ieee802154/af802154.h
new file mode 100644
index 00000000000..b1ec5253752
--- /dev/null
+++ b/net/ieee802154/af802154.h
@@ -0,0 +1,36 @@
+/*
+ * Internal interfaces for ieee 802.15.4 address family.
+ *
+ * Copyright 2007, 2008, 2009 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Sergey Lapin <slapin@ossfans.org>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ */
+
+#ifndef AF802154_H
+#define AF802154_H
+
+struct sk_buff;
+struct net_devce;
+extern struct proto ieee802154_raw_prot;
+extern struct proto ieee802154_dgram_prot;
+void ieee802154_raw_deliver(struct net_device *dev, struct sk_buff *skb);
+int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb);
+struct net_device *ieee802154_get_dev(struct net *net,
+ struct ieee802154_addr *addr);
+
+#endif
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
new file mode 100644
index 00000000000..882a927cefa
--- /dev/null
+++ b/net/ieee802154/af_ieee802154.c
@@ -0,0 +1,372 @@
+/*
+ * IEEE802154.4 socket interface
+ *
+ * Copyright 2007, 2008 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Sergey Lapin <slapin@ossfans.org>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ */
+
+#include <linux/net.h>
+#include <linux/capability.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+#include <linux/if.h>
+#include <linux/termios.h> /* For TIOCOUTQ/INQ */
+#include <linux/list.h>
+#include <net/datalink.h>
+#include <net/psnap.h>
+#include <net/sock.h>
+#include <net/tcp_states.h>
+#include <net/route.h>
+
+#include <net/ieee802154/af_ieee802154.h>
+#include <net/ieee802154/netdevice.h>
+
+#include "af802154.h"
+
+#define DBG_DUMP(data, len) { \
+ int i; \
+ pr_debug("function: %s: data: len %d:\n", __func__, len); \
+ for (i = 0; i < len; i++) {\
+ pr_debug("%02x: %02x\n", i, (data)[i]); \
+ } \
+}
+
+/*
+ * Utility function for families
+ */
+struct net_device *ieee802154_get_dev(struct net *net,
+ struct ieee802154_addr *addr)
+{
+ struct net_device *dev = NULL;
+ struct net_device *tmp;
+ u16 pan_id, short_addr;
+
+ switch (addr->addr_type) {
+ case IEEE802154_ADDR_LONG:
+ rtnl_lock();
+ dev = dev_getbyhwaddr(net, ARPHRD_IEEE802154, addr->hwaddr);
+ if (dev)
+ dev_hold(dev);
+ rtnl_unlock();
+ break;
+ case IEEE802154_ADDR_SHORT:
+ if (addr->pan_id == 0xffff ||
+ addr->short_addr == IEEE802154_ADDR_UNDEF ||
+ addr->short_addr == 0xffff)
+ break;
+
+ rtnl_lock();
+
+ for_each_netdev(net, tmp) {
+ if (tmp->type != ARPHRD_IEEE802154)
+ continue;
+
+ pan_id = ieee802154_mlme_ops(tmp)->get_pan_id(tmp);
+ short_addr =
+ ieee802154_mlme_ops(tmp)->get_short_addr(tmp);
+
+ if (pan_id == addr->pan_id &&
+ short_addr == addr->short_addr) {
+ dev = tmp;
+ dev_hold(dev);
+ break;
+ }
+ }
+
+ rtnl_unlock();
+ break;
+ default:
+ pr_warning("Unsupported ieee802154 address type: %d\n",
+ addr->addr_type);
+ break;
+ }
+
+ return dev;
+}
+
+static int ieee802154_sock_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+
+ if (sk) {
+ sock->sk = NULL;
+ sk->sk_prot->close(sk, 0);
+ }
+ return 0;
+}
+static int ieee802154_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t len)
+{
+ struct sock *sk = sock->sk;
+
+ return sk->sk_prot->sendmsg(iocb, sk, msg, len);
+}
+
+static int ieee802154_sock_bind(struct socket *sock, struct sockaddr *uaddr,
+ int addr_len)
+{
+ struct sock *sk = sock->sk;
+
+ if (sk->sk_prot->bind)
+ return sk->sk_prot->bind(sk, uaddr, addr_len);
+
+ return sock_no_bind(sock, uaddr, addr_len);
+}
+
+static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
+ int addr_len, int flags)
+{
+ struct sock *sk = sock->sk;
+
+ if (uaddr->sa_family == AF_UNSPEC)
+ return sk->sk_prot->disconnect(sk, flags);
+
+ return sk->sk_prot->connect(sk, uaddr, addr_len);
+}
+
+static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
+ unsigned int cmd)
+{
+ struct ifreq ifr;
+ int ret = -EINVAL;
+ struct net_device *dev;
+
+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
+ return -EFAULT;
+
+ ifr.ifr_name[IFNAMSIZ-1] = 0;
+
+ dev_load(sock_net(sk), ifr.ifr_name);
+ dev = dev_get_by_name(sock_net(sk), ifr.ifr_name);
+ if (dev->type == ARPHRD_IEEE802154 ||
+ dev->type == ARPHRD_IEEE802154_PHY)
+ ret = dev->netdev_ops->ndo_do_ioctl(dev, &ifr, cmd);
+
+ if (!ret && copy_to_user(arg, &ifr, sizeof(struct ifreq)))
+ ret = -EFAULT;
+ dev_put(dev);
+
+ return ret;
+}
+
+static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
+ unsigned long arg)
+{
+ struct sock *sk = sock->sk;
+
+ switch (cmd) {
+ case SIOCGSTAMP:
+ return sock_get_timestamp(sk, (struct timeval __user *)arg);
+ case SIOCGSTAMPNS:
+ return sock_get_timestampns(sk, (struct timespec __user *)arg);
+ case SIOCGIFADDR:
+ case SIOCSIFADDR:
+ return ieee802154_dev_ioctl(sk, (struct ifreq __user *)arg,
+ cmd);
+ default:
+ if (!sk->sk_prot->ioctl)
+ return -ENOIOCTLCMD;
+ return sk->sk_prot->ioctl(sk, cmd, arg);
+ }
+}
+
+static const struct proto_ops ieee802154_raw_ops = {
+ .family = PF_IEEE802154,
+ .owner = THIS_MODULE,
+ .release = ieee802154_sock_release,
+ .bind = ieee802154_sock_bind,
+ .connect = ieee802154_sock_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = sock_no_accept,
+ .getname = sock_no_getname,
+ .poll = datagram_poll,
+ .ioctl = ieee802154_sock_ioctl,
+ .listen = sock_no_listen,
+ .shutdown = sock_no_shutdown,
+ .setsockopt = sock_common_setsockopt,
+ .getsockopt = sock_common_getsockopt,
+ .sendmsg = ieee802154_sock_sendmsg,
+ .recvmsg = sock_common_recvmsg,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+#ifdef CONFIG_COMPAT
+ .compat_setsockopt = compat_sock_common_setsockopt,
+ .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
+};
+
+static const struct proto_ops ieee802154_dgram_ops = {
+ .family = PF_IEEE802154,
+ .owner = THIS_MODULE,
+ .release = ieee802154_sock_release,
+ .bind = ieee802154_sock_bind,
+ .connect = ieee802154_sock_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = sock_no_accept,
+ .getname = sock_no_getname,
+ .poll = datagram_poll,
+ .ioctl = ieee802154_sock_ioctl,
+ .listen = sock_no_listen,
+ .shutdown = sock_no_shutdown,
+ .setsockopt = sock_common_setsockopt,
+ .getsockopt = sock_common_getsockopt,
+ .sendmsg = ieee802154_sock_sendmsg,
+ .recvmsg = sock_common_recvmsg,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+#ifdef CONFIG_COMPAT
+ .compat_setsockopt = compat_sock_common_setsockopt,
+ .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
+};
+
+
+/*
+ * Create a socket. Initialise the socket, blank the addresses
+ * set the state.
+ */
+static int ieee802154_create(struct net *net, struct socket *sock,
+ int protocol)
+{
+ struct sock *sk;
+ int rc;
+ struct proto *proto;
+ const struct proto_ops *ops;
+
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
+ switch (sock->type) {
+ case SOCK_RAW:
+ proto = &ieee802154_raw_prot;
+ ops = &ieee802154_raw_ops;
+ break;
+ case SOCK_DGRAM:
+ proto = &ieee802154_dgram_prot;
+ ops = &ieee802154_dgram_ops;
+ break;
+ default:
+ rc = -ESOCKTNOSUPPORT;
+ goto out;
+ }
+
+ rc = -ENOMEM;
+ sk = sk_alloc(net, PF_IEEE802154, GFP_KERNEL, proto);
+ if (!sk)
+ goto out;
+ rc = 0;
+
+ sock->ops = ops;
+
+ sock_init_data(sock, sk);
+ /* FIXME: sk->sk_destruct */
+ sk->sk_family = PF_IEEE802154;
+
+ /* Checksums on by default */
+ sock_set_flag(sk, SOCK_ZAPPED);
+
+ if (sk->sk_prot->hash)
+ sk->sk_prot->hash(sk);
+
+ if (sk->sk_prot->init) {
+ rc = sk->sk_prot->init(sk);
+ if (rc)
+ sk_common_release(sk);
+ }
+out:
+ return rc;
+}
+
+static struct net_proto_family ieee802154_family_ops = {
+ .family = PF_IEEE802154,
+ .create = ieee802154_create,
+ .owner = THIS_MODULE,
+};
+
+static int ieee802154_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt, struct net_device *orig_dev)
+{
+ DBG_DUMP(skb->data, skb->len);
+ if (!netif_running(dev))
+ return -ENODEV;
+ pr_debug("got frame, type %d, dev %p\n", dev->type, dev);
+
+ if (!net_eq(dev_net(dev), &init_net))
+ goto drop;
+
+ ieee802154_raw_deliver(dev, skb);
+
+ if (dev->type != ARPHRD_IEEE802154)
+ goto drop;
+
+ if (skb->pkt_type != PACKET_OTHERHOST)
+ return ieee802154_dgram_deliver(dev, skb);
+
+drop:
+ kfree_skb(skb);
+ return NET_RX_DROP;
+}
+
+
+static struct packet_type ieee802154_packet_type = {
+ .type = __constant_htons(ETH_P_IEEE802154),
+ .func = ieee802154_rcv,
+};
+
+static int __init af_ieee802154_init(void)
+{
+ int rc = -EINVAL;
+
+ rc = proto_register(&ieee802154_raw_prot, 1);
+ if (rc)
+ goto out;
+
+ rc = proto_register(&ieee802154_dgram_prot, 1);
+ if (rc)
+ goto err_dgram;
+
+ /* Tell SOCKET that we are alive */
+ rc = sock_register(&ieee802154_family_ops);
+ if (rc)
+ goto err_sock;
+ dev_add_pack(&ieee802154_packet_type);
+
+ rc = 0;
+ goto out;
+
+err_sock:
+ proto_unregister(&ieee802154_dgram_prot);
+err_dgram:
+ proto_unregister(&ieee802154_raw_prot);
+out:
+ return rc;
+}
+static void __exit af_ieee802154_remove(void)
+{
+ dev_remove_pack(&ieee802154_packet_type);
+ sock_unregister(PF_IEEE802154);
+ proto_unregister(&ieee802154_dgram_prot);
+ proto_unregister(&ieee802154_raw_prot);
+}
+
+module_init(af_ieee802154_init);
+module_exit(af_ieee802154_remove);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_NETPROTO(PF_IEEE802154);
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c
new file mode 100644
index 00000000000..1f5ea11c2fd
--- /dev/null
+++ b/net/ieee802154/dgram.c
@@ -0,0 +1,394 @@
+/*
+ * ZigBee socket interface
+ *
+ * Copyright 2007, 2008 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Sergey Lapin <slapin@ossfans.org>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ */
+
+#include <linux/net.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+#include <linux/list.h>
+#include <net/sock.h>
+#include <net/ieee802154/af_ieee802154.h>
+#include <net/ieee802154/mac_def.h>
+#include <net/ieee802154/netdevice.h>
+
+#include <asm/ioctls.h>
+
+#include "af802154.h"
+
+static HLIST_HEAD(dgram_head);
+static DEFINE_RWLOCK(dgram_lock);
+
+struct dgram_sock {
+ struct sock sk;
+
+ int bound;
+ struct ieee802154_addr src_addr;
+ struct ieee802154_addr dst_addr;
+};
+
+static inline struct dgram_sock *dgram_sk(const struct sock *sk)
+{
+ return container_of(sk, struct dgram_sock, sk);
+}
+
+
+static void dgram_hash(struct sock *sk)
+{
+ write_lock_bh(&dgram_lock);
+ sk_add_node(sk, &dgram_head);
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
+ write_unlock_bh(&dgram_lock);
+}
+
+static void dgram_unhash(struct sock *sk)
+{
+ write_lock_bh(&dgram_lock);
+ if (sk_del_node_init(sk))
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
+ write_unlock_bh(&dgram_lock);
+}
+
+static int dgram_init(struct sock *sk)
+{
+ struct dgram_sock *ro = dgram_sk(sk);
+
+ ro->dst_addr.addr_type = IEEE802154_ADDR_LONG;
+ ro->dst_addr.pan_id = 0xffff;
+ memset(&ro->dst_addr.hwaddr, 0xff, sizeof(ro->dst_addr.hwaddr));
+ return 0;
+}
+
+static void dgram_close(struct sock *sk, long timeout)
+{
+ sk_common_release(sk);
+}
+
+static int dgram_bind(struct sock *sk, struct sockaddr *uaddr, int len)
+{
+ struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
+ struct dgram_sock *ro = dgram_sk(sk);
+ int err = 0;
+ struct net_device *dev;
+
+ ro->bound = 0;
+
+ if (len < sizeof(*addr))
+ return -EINVAL;
+
+ if (addr->family != AF_IEEE802154)
+ return -EINVAL;
+
+ lock_sock(sk);
+
+ dev = ieee802154_get_dev(sock_net(sk), &addr->addr);
+ if (!dev) {
+ err = -ENODEV;
+ goto out;
+ }
+
+ if (dev->type != ARPHRD_IEEE802154) {
+ err = -ENODEV;
+ goto out_put;
+ }
+
+ memcpy(&ro->src_addr, &addr->addr, sizeof(struct ieee802154_addr));
+
+ ro->bound = 1;
+out_put:
+ dev_put(dev);
+out:
+ release_sock(sk);
+
+ return err;
+}
+
+static int dgram_ioctl(struct sock *sk, int cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case SIOCOUTQ:
+ {
+ int amount = atomic_read(&sk->sk_wmem_alloc);
+ return put_user(amount, (int __user *)arg);
+ }
+
+ case SIOCINQ:
+ {
+ struct sk_buff *skb;
+ unsigned long amount;
+
+ amount = 0;
+ spin_lock_bh(&sk->sk_receive_queue.lock);
+ skb = skb_peek(&sk->sk_receive_queue);
+ if (skb != NULL) {
+ /*
+ * We will only return the amount
+ * of this packet since that is all
+ * that will be read.
+ */
+ /* FIXME: parse the header for more correct value */
+ amount = skb->len - (3+8+8);
+ }
+ spin_unlock_bh(&sk->sk_receive_queue.lock);
+ return put_user(amount, (int __user *)arg);
+ }
+
+ }
+ return -ENOIOCTLCMD;
+}
+
+/* FIXME: autobind */
+static int dgram_connect(struct sock *sk, struct sockaddr *uaddr,
+ int len)
+{
+ struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
+ struct dgram_sock *ro = dgram_sk(sk);
+ int err = 0;
+
+ if (len < sizeof(*addr))
+ return -EINVAL;
+
+ if (addr->family != AF_IEEE802154)
+ return -EINVAL;
+
+ lock_sock(sk);
+
+ if (!ro->bound) {
+ err = -ENETUNREACH;
+ goto out;
+ }
+
+ memcpy(&ro->dst_addr, &addr->addr, sizeof(struct ieee802154_addr));
+
+out:
+ release_sock(sk);
+ return err;
+}
+
+static int dgram_disconnect(struct sock *sk, int flags)
+{
+ struct dgram_sock *ro = dgram_sk(sk);
+
+ lock_sock(sk);
+
+ ro->dst_addr.addr_type = IEEE802154_ADDR_LONG;
+ memset(&ro->dst_addr.hwaddr, 0xff, sizeof(ro->dst_addr.hwaddr));
+
+ release_sock(sk);
+
+ return 0;
+}
+
+static int dgram_sendmsg(struct kiocb *iocb, struct sock *sk,
+ struct msghdr *msg, size_t size)
+{
+ struct net_device *dev;
+ unsigned mtu;
+ struct sk_buff *skb;
+ struct dgram_sock *ro = dgram_sk(sk);
+ int err;
+
+ if (msg->msg_flags & MSG_OOB) {
+ pr_debug("msg->msg_flags = 0x%x\n", msg->msg_flags);
+ return -EOPNOTSUPP;
+ }
+
+ if (!ro->bound)
+ dev = dev_getfirstbyhwtype(sock_net(sk), ARPHRD_IEEE802154);
+ else
+ dev = ieee802154_get_dev(sock_net(sk), &ro->src_addr);
+
+ if (!dev) {
+ pr_debug("no dev\n");
+ err = -ENXIO;
+ goto out;
+ }
+ mtu = dev->mtu;
+ pr_debug("name = %s, mtu = %u\n", dev->name, mtu);
+
+ skb = sock_alloc_send_skb(sk, LL_ALLOCATED_SPACE(dev) + size,
+ msg->msg_flags & MSG_DONTWAIT,
+ &err);
+ if (!skb)
+ goto out_dev;
+
+ skb_reserve(skb, LL_RESERVED_SPACE(dev));
+
+ skb_reset_network_header(skb);
+
+ mac_cb(skb)->flags = IEEE802154_FC_TYPE_DATA | MAC_CB_FLAG_ACKREQ;
+ mac_cb(skb)->seq = ieee802154_mlme_ops(dev)->get_dsn(dev);
+ err = dev_hard_header(skb, dev, ETH_P_IEEE802154, &ro->dst_addr,
+ ro->bound ? &ro->src_addr : NULL, size);
+ if (err < 0)
+ goto out_skb;
+
+ skb_reset_mac_header(skb);
+
+ err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
+ if (err < 0)
+ goto out_skb;
+
+ if (size > mtu) {
+ pr_debug("size = %u, mtu = %u\n", size, mtu);
+ err = -EINVAL;
+ goto out_skb;
+ }
+
+ skb->dev = dev;
+ skb->sk = sk;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+ dev_put(dev);
+
+ err = dev_queue_xmit(skb);
+ if (err > 0)
+ err = net_xmit_errno(err);
+
+ return err ?: size;
+
+out_skb:
+ kfree_skb(skb);
+out_dev:
+ dev_put(dev);
+out:
+ return err;
+}
+
+static int dgram_recvmsg(struct kiocb *iocb, struct sock *sk,
+ struct msghdr *msg, size_t len, int noblock, int flags,
+ int *addr_len)
+{
+ size_t copied = 0;
+ int err = -EOPNOTSUPP;
+ struct sk_buff *skb;
+
+ skb = skb_recv_datagram(sk, flags, noblock, &err);
+ if (!skb)
+ goto out;
+
+ copied = skb->len;
+ if (len < copied) {
+ msg->msg_flags |= MSG_TRUNC;
+ copied = len;
+ }
+
+ /* FIXME: skip headers if necessary ?! */
+ err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+ if (err)
+ goto done;
+
+ sock_recv_timestamp(msg, sk, skb);
+
+ if (flags & MSG_TRUNC)
+ copied = skb->len;
+done:
+ skb_free_datagram(sk, skb);
+out:
+ if (err)
+ return err;
+ return copied;
+}
+
+static int dgram_rcv_skb(struct sock *sk, struct sk_buff *skb)
+{
+ if (sock_queue_rcv_skb(sk, skb) < 0) {
+ atomic_inc(&sk->sk_drops);
+ kfree_skb(skb);
+ return NET_RX_DROP;
+ }
+
+ return NET_RX_SUCCESS;
+}
+
+static inline int ieee802154_match_sock(u8 *hw_addr, u16 pan_id,
+ u16 short_addr, struct dgram_sock *ro)
+{
+ if (!ro->bound)
+ return 1;
+
+ if (ro->src_addr.addr_type == IEEE802154_ADDR_LONG &&
+ !memcmp(ro->src_addr.hwaddr, hw_addr, IEEE802154_ADDR_LEN))
+ return 1;
+
+ if (ro->src_addr.addr_type == IEEE802154_ADDR_SHORT &&
+ pan_id == ro->src_addr.pan_id &&
+ short_addr == ro->src_addr.short_addr)
+ return 1;
+
+ return 0;
+}
+
+int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
+{
+ struct sock *sk, *prev = NULL;
+ struct hlist_node *node;
+ int ret = NET_RX_SUCCESS;
+ u16 pan_id, short_addr;
+
+ /* Data frame processing */
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
+ short_addr = ieee802154_mlme_ops(dev)->get_short_addr(dev);
+
+ read_lock(&dgram_lock);
+ sk_for_each(sk, node, &dgram_head) {
+ if (ieee802154_match_sock(dev->dev_addr, pan_id, short_addr,
+ dgram_sk(sk))) {
+ if (prev) {
+ struct sk_buff *clone;
+ clone = skb_clone(skb, GFP_ATOMIC);
+ if (clone)
+ dgram_rcv_skb(prev, clone);
+ }
+
+ prev = sk;
+ }
+ }
+
+ if (prev)
+ dgram_rcv_skb(prev, skb);
+ else {
+ kfree_skb(skb);
+ ret = NET_RX_DROP;
+ }
+ read_unlock(&dgram_lock);
+
+ return ret;
+}
+
+struct proto ieee802154_dgram_prot = {
+ .name = "IEEE-802.15.4-MAC",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct dgram_sock),
+ .init = dgram_init,
+ .close = dgram_close,
+ .bind = dgram_bind,
+ .sendmsg = dgram_sendmsg,
+ .recvmsg = dgram_recvmsg,
+ .hash = dgram_hash,
+ .unhash = dgram_unhash,
+ .connect = dgram_connect,
+ .disconnect = dgram_disconnect,
+ .ioctl = dgram_ioctl,
+};
+
diff --git a/net/ieee802154/raw.c b/net/ieee802154/raw.c
new file mode 100644
index 00000000000..8b892e06049
--- /dev/null
+++ b/net/ieee802154/raw.c
@@ -0,0 +1,254 @@
+/*
+ * Raw IEEE 802.15.4 sockets
+ *
+ * Copyright 2007, 2008 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Written by:
+ * Sergey Lapin <slapin@ossfans.org>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ */
+
+#include <linux/net.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+#include <linux/list.h>
+#include <net/sock.h>
+#include <net/ieee802154/af_ieee802154.h>
+
+#include "af802154.h"
+
+static HLIST_HEAD(raw_head);
+static DEFINE_RWLOCK(raw_lock);
+
+static void raw_hash(struct sock *sk)
+{
+ write_lock_bh(&raw_lock);
+ sk_add_node(sk, &raw_head);
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
+ write_unlock_bh(&raw_lock);
+}
+
+static void raw_unhash(struct sock *sk)
+{
+ write_lock_bh(&raw_lock);
+ if (sk_del_node_init(sk))
+ sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
+ write_unlock_bh(&raw_lock);
+}
+
+static void raw_close(struct sock *sk, long timeout)
+{
+ sk_common_release(sk);
+}
+
+static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int len)
+{
+ struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
+ int err = 0;
+ struct net_device *dev = NULL;
+
+ if (len < sizeof(*addr))
+ return -EINVAL;
+
+ if (addr->family != AF_IEEE802154)
+ return -EINVAL;
+
+ lock_sock(sk);
+
+ dev = ieee802154_get_dev(sock_net(sk), &addr->addr);
+ if (!dev) {
+ err = -ENODEV;
+ goto out;
+ }
+
+ if (dev->type != ARPHRD_IEEE802154_PHY &&
+ dev->type != ARPHRD_IEEE802154) {
+ err = -ENODEV;
+ goto out_put;
+ }
+
+ sk->sk_bound_dev_if = dev->ifindex;
+ sk_dst_reset(sk);
+
+out_put:
+ dev_put(dev);
+out:
+ release_sock(sk);
+
+ return err;
+}
+
+static int raw_connect(struct sock *sk, struct sockaddr *uaddr,
+ int addr_len)
+{
+ return -ENOTSUPP;
+}
+
+static int raw_disconnect(struct sock *sk, int flags)
+{
+ return 0;
+}
+
+static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
+ size_t size)
+{
+ struct net_device *dev;
+ unsigned mtu;
+ struct sk_buff *skb;
+ int err;
+
+ if (msg->msg_flags & MSG_OOB) {
+ pr_debug("msg->msg_flags = 0x%x\n", msg->msg_flags);
+ return -EOPNOTSUPP;
+ }
+
+ lock_sock(sk);
+ if (!sk->sk_bound_dev_if)
+ dev = dev_getfirstbyhwtype(sock_net(sk), ARPHRD_IEEE802154);
+ else
+ dev = dev_get_by_index(sock_net(sk), sk->sk_bound_dev_if);
+ release_sock(sk);
+
+ if (!dev) {
+ pr_debug("no dev\n");
+ err = -ENXIO;
+ goto out;
+ }
+
+ mtu = dev->mtu;
+ pr_debug("name = %s, mtu = %u\n", dev->name, mtu);
+
+ if (size > mtu) {
+ pr_debug("size = %u, mtu = %u\n", size, mtu);
+ err = -EINVAL;
+ goto out_dev;
+ }
+
+ skb = sock_alloc_send_skb(sk, LL_ALLOCATED_SPACE(dev) + size,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ goto out_dev;
+
+ skb_reserve(skb, LL_RESERVED_SPACE(dev));
+
+ skb_reset_mac_header(skb);
+ skb_reset_network_header(skb);
+
+ err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
+ if (err < 0)
+ goto out_skb;
+
+ skb->dev = dev;
+ skb->sk = sk;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+ dev_put(dev);
+
+ err = dev_queue_xmit(skb);
+ if (err > 0)
+ err = net_xmit_errno(err);
+
+ return err ?: size;
+
+out_skb:
+ kfree_skb(skb);
+out_dev:
+ dev_put(dev);
+out:
+ return err;
+}
+
+static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
+ size_t len, int noblock, int flags, int *addr_len)
+{
+ size_t copied = 0;
+ int err = -EOPNOTSUPP;
+ struct sk_buff *skb;
+
+ skb = skb_recv_datagram(sk, flags, noblock, &err);
+ if (!skb)
+ goto out;
+
+ copied = skb->len;
+ if (len < copied) {
+ msg->msg_flags |= MSG_TRUNC;
+ copied = len;
+ }
+
+ err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+ if (err)
+ goto done;
+
+ sock_recv_timestamp(msg, sk, skb);
+
+ if (flags & MSG_TRUNC)
+ copied = skb->len;
+done:
+ skb_free_datagram(sk, skb);
+out:
+ if (err)
+ return err;
+ return copied;
+}
+
+static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
+{
+ if (sock_queue_rcv_skb(sk, skb) < 0) {
+ atomic_inc(&sk->sk_drops);
+ kfree_skb(skb);
+ return NET_RX_DROP;
+ }
+
+ return NET_RX_SUCCESS;
+}
+
+
+void ieee802154_raw_deliver(struct net_device *dev, struct sk_buff *skb)
+{
+ struct sock *sk;
+ struct hlist_node *node;
+
+ read_lock(&raw_lock);
+ sk_for_each(sk, node, &raw_head) {
+ bh_lock_sock(sk);
+ if (!sk->sk_bound_dev_if ||
+ sk->sk_bound_dev_if == dev->ifindex) {
+
+ struct sk_buff *clone;
+
+ clone = skb_clone(skb, GFP_ATOMIC);
+ if (clone)
+ raw_rcv_skb(sk, clone);
+ }
+ bh_unlock_sock(sk);
+ }
+ read_unlock(&raw_lock);
+}
+
+struct proto ieee802154_raw_prot = {
+ .name = "IEEE-802.15.4-RAW",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct sock),
+ .close = raw_close,
+ .bind = raw_bind,
+ .sendmsg = raw_sendmsg,
+ .recvmsg = raw_recvmsg,
+ .hash = raw_hash,
+ .unhash = raw_unhash,
+ .connect = raw_connect,
+ .disconnect = raw_disconnect,
+};
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 08:33:21 +0000