diff options
Diffstat (limited to 'net/ieee802154/raw.c')
-rw-r--r-- | net/ieee802154/raw.c | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/net/ieee802154/raw.c b/net/ieee802154/raw.c deleted file mode 100644 index 1674b115..0000000 --- a/net/ieee802154/raw.c +++ /dev/null @@ -1,270 +0,0 @@ -/* - * 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. - * - * 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 <linux/slab.h> -#include <net/sock.h> -#include <net/af_ieee802154.h> -#include <net/ieee802154_netdev.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 ieee802154_addr addr; - struct sockaddr_ieee802154 *uaddr = (struct sockaddr_ieee802154 *)_uaddr; - int err = 0; - struct net_device *dev = NULL; - - if (len < sizeof(*uaddr)) - return -EINVAL; - - uaddr = (struct sockaddr_ieee802154 *)_uaddr; - if (uaddr->family != AF_IEEE802154) - return -EINVAL; - - lock_sock(sk); - - ieee802154_addr_from_sa(&addr, &uaddr->addr); - dev = ieee802154_get_dev(sock_net(sk), &addr); - if (!dev) { - err = -ENODEV; - goto out; - } - - if (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 int mtu; - struct sk_buff *skb; - int hlen, tlen; - 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 = %Zu, mtu = %u\n", size, mtu); - err = -EINVAL; - goto out_dev; - } - - hlen = LL_RESERVED_SPACE(dev); - tlen = dev->needed_tailroom; - skb = sock_alloc_send_skb(sk, hlen + tlen + size, - msg->msg_flags & MSG_DONTWAIT, &err); - if (!skb) - goto out_dev; - - skb_reserve(skb, hlen); - - skb_reset_mac_header(skb); - skb_reset_network_header(skb); - - err = memcpy_from_msg(skb_put(skb, size), msg, 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_msg(skb, 0, msg, copied); - if (err) - goto done; - - sock_recv_ts_and_drops(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) -{ - skb = skb_share_check(skb, GFP_ATOMIC); - if (!skb) - return NET_RX_DROP; - - if (sock_queue_rcv_skb(sk, skb) < 0) { - 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; - - read_lock(&raw_lock); - sk_for_each(sk, &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); -} - -static int raw_getsockopt(struct sock *sk, int level, int optname, - char __user *optval, int __user *optlen) -{ - return -EOPNOTSUPP; -} - -static int raw_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, unsigned int optlen) -{ - return -EOPNOTSUPP; -} - -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, - .getsockopt = raw_getsockopt, - .setsockopt = raw_setsockopt, -}; 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