ieee802154: socket: put handling into one file
This patch puts all related socket handling into one file. This is just a cleanup to do all socket handling stuff inside of one implementation file. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring
Marcel Holtmann
parent
79300e3a43
commit
78f821b648
5 changed files with 760 additions and 856 deletions
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@ -5,6 +5,6 @@ obj-$(CONFIG_IEEE802154_6LOWPAN) += ieee802154_6lowpan.o
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ieee802154_6lowpan-y := 6lowpan_rtnl.o reassembly.o
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ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o core.o \
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header_ops.o sysfs.o nl802154.o
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ieee802154_socket-y := af_ieee802154.o raw.o dgram.o
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ieee802154_socket-y := af_ieee802154.o
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ccflags-y += -D__CHECK_ENDIAN__
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@ -1,33 +0,0 @@
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/*
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* Internal interfaces for ieee 802.15.4 address family.
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*
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* Copyright 2007, 2008, 2009 Siemens AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Written by:
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* Sergey Lapin <slapin@ossfans.org>
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* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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*/
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#ifndef AF802154_H
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#define AF802154_H
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struct sk_buff;
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struct net_device;
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struct ieee802154_addr;
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extern struct proto ieee802154_raw_prot;
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extern struct proto ieee802154_dgram_prot;
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void ieee802154_raw_deliver(struct net_device *dev, struct sk_buff *skb);
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int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb);
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struct net_device *ieee802154_get_dev(struct net *net,
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const struct ieee802154_addr *addr);
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#endif
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@ -34,10 +34,8 @@
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#include <net/af_ieee802154.h>
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#include <net/ieee802154_netdev.h>
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#include "af802154.h"
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/* Utility function for families */
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struct net_device*
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static struct net_device*
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ieee802154_get_dev(struct net *net, const struct ieee802154_addr *addr)
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{
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struct net_device *dev = NULL;
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@ -182,6 +180,248 @@ static int ieee802154_sock_ioctl(struct socket *sock, unsigned int cmd,
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}
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}
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/* RAW Sockets (802.15.4 created in userspace) */
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static HLIST_HEAD(raw_head);
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static DEFINE_RWLOCK(raw_lock);
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static void raw_hash(struct sock *sk)
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{
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write_lock_bh(&raw_lock);
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sk_add_node(sk, &raw_head);
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sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
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write_unlock_bh(&raw_lock);
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}
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static void raw_unhash(struct sock *sk)
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{
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write_lock_bh(&raw_lock);
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if (sk_del_node_init(sk))
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sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
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write_unlock_bh(&raw_lock);
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}
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static void raw_close(struct sock *sk, long timeout)
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{
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sk_common_release(sk);
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}
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static int raw_bind(struct sock *sk, struct sockaddr *_uaddr, int len)
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{
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struct ieee802154_addr addr;
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struct sockaddr_ieee802154 *uaddr = (struct sockaddr_ieee802154 *)_uaddr;
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int err = 0;
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struct net_device *dev = NULL;
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if (len < sizeof(*uaddr))
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return -EINVAL;
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uaddr = (struct sockaddr_ieee802154 *)_uaddr;
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if (uaddr->family != AF_IEEE802154)
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return -EINVAL;
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lock_sock(sk);
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ieee802154_addr_from_sa(&addr, &uaddr->addr);
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dev = ieee802154_get_dev(sock_net(sk), &addr);
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if (!dev) {
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err = -ENODEV;
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goto out;
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}
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if (dev->type != ARPHRD_IEEE802154) {
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err = -ENODEV;
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goto out_put;
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}
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sk->sk_bound_dev_if = dev->ifindex;
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sk_dst_reset(sk);
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out_put:
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dev_put(dev);
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out:
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release_sock(sk);
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return err;
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}
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static int raw_connect(struct sock *sk, struct sockaddr *uaddr,
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int addr_len)
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{
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return -ENOTSUPP;
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}
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static int raw_disconnect(struct sock *sk, int flags)
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{
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return 0;
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}
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static int raw_sendmsg(struct kiocb *iocb, struct sock *sk,
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struct msghdr *msg, size_t size)
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{
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struct net_device *dev;
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unsigned int mtu;
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struct sk_buff *skb;
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int hlen, tlen;
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int err;
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if (msg->msg_flags & MSG_OOB) {
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pr_debug("msg->msg_flags = 0x%x\n", msg->msg_flags);
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return -EOPNOTSUPP;
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}
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lock_sock(sk);
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if (!sk->sk_bound_dev_if)
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dev = dev_getfirstbyhwtype(sock_net(sk), ARPHRD_IEEE802154);
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else
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dev = dev_get_by_index(sock_net(sk), sk->sk_bound_dev_if);
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release_sock(sk);
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if (!dev) {
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pr_debug("no dev\n");
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err = -ENXIO;
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goto out;
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}
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mtu = dev->mtu;
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pr_debug("name = %s, mtu = %u\n", dev->name, mtu);
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if (size > mtu) {
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pr_debug("size = %Zu, mtu = %u\n", size, mtu);
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err = -EINVAL;
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goto out_dev;
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}
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hlen = LL_RESERVED_SPACE(dev);
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tlen = dev->needed_tailroom;
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skb = sock_alloc_send_skb(sk, hlen + tlen + size,
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msg->msg_flags & MSG_DONTWAIT, &err);
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if (!skb)
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goto out_dev;
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skb_reserve(skb, hlen);
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skb_reset_mac_header(skb);
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skb_reset_network_header(skb);
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err = memcpy_from_msg(skb_put(skb, size), msg, size);
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if (err < 0)
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goto out_skb;
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skb->dev = dev;
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skb->sk = sk;
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skb->protocol = htons(ETH_P_IEEE802154);
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dev_put(dev);
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err = dev_queue_xmit(skb);
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if (err > 0)
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err = net_xmit_errno(err);
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return err ?: size;
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out_skb:
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kfree_skb(skb);
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out_dev:
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dev_put(dev);
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out:
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return err;
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}
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static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
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size_t len, int noblock, int flags, int *addr_len)
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{
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size_t copied = 0;
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int err = -EOPNOTSUPP;
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struct sk_buff *skb;
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skb = skb_recv_datagram(sk, flags, noblock, &err);
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if (!skb)
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goto out;
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copied = skb->len;
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if (len < copied) {
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msg->msg_flags |= MSG_TRUNC;
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copied = len;
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}
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err = skb_copy_datagram_msg(skb, 0, msg, copied);
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if (err)
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goto done;
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sock_recv_ts_and_drops(msg, sk, skb);
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if (flags & MSG_TRUNC)
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copied = skb->len;
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done:
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skb_free_datagram(sk, skb);
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out:
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if (err)
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return err;
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return copied;
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}
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static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
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{
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skb = skb_share_check(skb, GFP_ATOMIC);
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if (!skb)
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return NET_RX_DROP;
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if (sock_queue_rcv_skb(sk, skb) < 0) {
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kfree_skb(skb);
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return NET_RX_DROP;
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}
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return NET_RX_SUCCESS;
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}
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static void ieee802154_raw_deliver(struct net_device *dev, struct sk_buff *skb)
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{
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struct sock *sk;
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read_lock(&raw_lock);
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sk_for_each(sk, &raw_head) {
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bh_lock_sock(sk);
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if (!sk->sk_bound_dev_if ||
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sk->sk_bound_dev_if == dev->ifindex) {
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struct sk_buff *clone;
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clone = skb_clone(skb, GFP_ATOMIC);
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if (clone)
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raw_rcv_skb(sk, clone);
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}
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bh_unlock_sock(sk);
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}
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read_unlock(&raw_lock);
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}
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static int raw_getsockopt(struct sock *sk, int level, int optname,
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char __user *optval, int __user *optlen)
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{
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return -EOPNOTSUPP;
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}
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static int raw_setsockopt(struct sock *sk, int level, int optname,
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char __user *optval, unsigned int optlen)
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{
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return -EOPNOTSUPP;
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}
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static struct proto ieee802154_raw_prot = {
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.name = "IEEE-802.15.4-RAW",
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.owner = THIS_MODULE,
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.obj_size = sizeof(struct sock),
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.close = raw_close,
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.bind = raw_bind,
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.sendmsg = raw_sendmsg,
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.recvmsg = raw_recvmsg,
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.hash = raw_hash,
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.unhash = raw_unhash,
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.connect = raw_connect,
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.disconnect = raw_disconnect,
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.getsockopt = raw_getsockopt,
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.setsockopt = raw_setsockopt,
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};
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static const struct proto_ops ieee802154_raw_ops = {
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.family = PF_IEEE802154,
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.owner = THIS_MODULE,
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@ -207,6 +447,522 @@ static const struct proto_ops ieee802154_raw_ops = {
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#endif
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};
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/* DGRAM Sockets (802.15.4 dataframes) */
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static HLIST_HEAD(dgram_head);
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static DEFINE_RWLOCK(dgram_lock);
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struct dgram_sock {
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struct sock sk;
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struct ieee802154_addr src_addr;
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struct ieee802154_addr dst_addr;
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unsigned int bound:1;
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unsigned int connected:1;
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unsigned int want_ack:1;
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unsigned int secen:1;
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unsigned int secen_override:1;
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unsigned int seclevel:3;
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unsigned int seclevel_override:1;
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};
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static inline struct dgram_sock *dgram_sk(const struct sock *sk)
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{
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return container_of(sk, struct dgram_sock, sk);
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}
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static void dgram_hash(struct sock *sk)
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{
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write_lock_bh(&dgram_lock);
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sk_add_node(sk, &dgram_head);
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sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
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write_unlock_bh(&dgram_lock);
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}
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static void dgram_unhash(struct sock *sk)
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{
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write_lock_bh(&dgram_lock);
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if (sk_del_node_init(sk))
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sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
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write_unlock_bh(&dgram_lock);
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}
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static int dgram_init(struct sock *sk)
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{
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struct dgram_sock *ro = dgram_sk(sk);
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ro->want_ack = 1;
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return 0;
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}
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static void dgram_close(struct sock *sk, long timeout)
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{
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sk_common_release(sk);
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}
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static int dgram_bind(struct sock *sk, struct sockaddr *uaddr, int len)
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{
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struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
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struct ieee802154_addr haddr;
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struct dgram_sock *ro = dgram_sk(sk);
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int err = -EINVAL;
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struct net_device *dev;
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lock_sock(sk);
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ro->bound = 0;
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if (len < sizeof(*addr))
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goto out;
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if (addr->family != AF_IEEE802154)
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goto out;
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ieee802154_addr_from_sa(&haddr, &addr->addr);
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dev = ieee802154_get_dev(sock_net(sk), &haddr);
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if (!dev) {
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err = -ENODEV;
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goto out;
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}
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if (dev->type != ARPHRD_IEEE802154) {
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err = -ENODEV;
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goto out_put;
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}
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ro->src_addr = haddr;
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ro->bound = 1;
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err = 0;
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out_put:
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dev_put(dev);
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out:
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release_sock(sk);
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return err;
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}
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static int dgram_ioctl(struct sock *sk, int cmd, unsigned long arg)
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{
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switch (cmd) {
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case SIOCOUTQ:
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{
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int amount = sk_wmem_alloc_get(sk);
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return put_user(amount, (int __user *)arg);
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}
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case SIOCINQ:
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{
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struct sk_buff *skb;
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unsigned long amount;
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amount = 0;
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spin_lock_bh(&sk->sk_receive_queue.lock);
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skb = skb_peek(&sk->sk_receive_queue);
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if (skb != NULL) {
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/* We will only return the amount
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* of this packet since that is all
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* that will be read.
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*/
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amount = skb->len - ieee802154_hdr_length(skb);
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}
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spin_unlock_bh(&sk->sk_receive_queue.lock);
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return put_user(amount, (int __user *)arg);
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}
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}
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return -ENOIOCTLCMD;
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}
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/* FIXME: autobind */
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static int dgram_connect(struct sock *sk, struct sockaddr *uaddr,
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int len)
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{
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struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
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struct dgram_sock *ro = dgram_sk(sk);
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int err = 0;
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if (len < sizeof(*addr))
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return -EINVAL;
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if (addr->family != AF_IEEE802154)
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return -EINVAL;
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lock_sock(sk);
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if (!ro->bound) {
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err = -ENETUNREACH;
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goto out;
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}
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ieee802154_addr_from_sa(&ro->dst_addr, &addr->addr);
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ro->connected = 1;
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out:
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release_sock(sk);
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return err;
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}
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static int dgram_disconnect(struct sock *sk, int flags)
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{
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struct dgram_sock *ro = dgram_sk(sk);
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lock_sock(sk);
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ro->connected = 0;
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release_sock(sk);
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return 0;
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}
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static int dgram_sendmsg(struct kiocb *iocb, struct sock *sk,
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struct msghdr *msg, size_t size)
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{
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struct net_device *dev;
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unsigned int mtu;
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struct sk_buff *skb;
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struct ieee802154_mac_cb *cb;
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struct dgram_sock *ro = dgram_sk(sk);
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struct ieee802154_addr dst_addr;
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int hlen, tlen;
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int err;
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if (msg->msg_flags & MSG_OOB) {
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pr_debug("msg->msg_flags = 0x%x\n", msg->msg_flags);
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return -EOPNOTSUPP;
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}
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if (!ro->connected && !msg->msg_name)
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return -EDESTADDRREQ;
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else if (ro->connected && msg->msg_name)
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return -EISCONN;
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if (!ro->bound)
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dev = dev_getfirstbyhwtype(sock_net(sk), ARPHRD_IEEE802154);
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else
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dev = ieee802154_get_dev(sock_net(sk), &ro->src_addr);
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if (!dev) {
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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 = -EMSGSIZE;
|
||||
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_network_header(skb);
|
||||
|
||||
cb = mac_cb_init(skb);
|
||||
cb->type = IEEE802154_FC_TYPE_DATA;
|
||||
cb->ackreq = ro->want_ack;
|
||||
|
||||
if (msg->msg_name) {
|
||||
DECLARE_SOCKADDR(struct sockaddr_ieee802154*,
|
||||
daddr, msg->msg_name);
|
||||
|
||||
ieee802154_addr_from_sa(&dst_addr, &daddr->addr);
|
||||
} else {
|
||||
dst_addr = ro->dst_addr;
|
||||
}
|
||||
|
||||
cb->secen = ro->secen;
|
||||
cb->secen_override = ro->secen_override;
|
||||
cb->seclevel = ro->seclevel;
|
||||
cb->seclevel_override = ro->seclevel_override;
|
||||
|
||||
err = dev_hard_header(skb, dev, ETH_P_IEEE802154, &dst_addr,
|
||||
ro->bound ? &ro->src_addr : NULL, size);
|
||||
if (err < 0)
|
||||
goto out_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 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;
|
||||
DECLARE_SOCKADDR(struct sockaddr_ieee802154 *, saddr, msg->msg_name);
|
||||
|
||||
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_msg(skb, 0, msg, copied);
|
||||
if (err)
|
||||
goto done;
|
||||
|
||||
sock_recv_ts_and_drops(msg, sk, skb);
|
||||
|
||||
if (saddr) {
|
||||
saddr->family = AF_IEEE802154;
|
||||
ieee802154_addr_to_sa(&saddr->addr, &mac_cb(skb)->source);
|
||||
*addr_len = sizeof(*saddr);
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
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;
|
||||
}
|
||||
|
||||
static inline bool
|
||||
ieee802154_match_sock(__le64 hw_addr, __le16 pan_id, __le16 short_addr,
|
||||
struct dgram_sock *ro)
|
||||
{
|
||||
if (!ro->bound)
|
||||
return true;
|
||||
|
||||
if (ro->src_addr.mode == IEEE802154_ADDR_LONG &&
|
||||
hw_addr == ro->src_addr.extended_addr)
|
||||
return true;
|
||||
|
||||
if (ro->src_addr.mode == IEEE802154_ADDR_SHORT &&
|
||||
pan_id == ro->src_addr.pan_id &&
|
||||
short_addr == ro->src_addr.short_addr)
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
|
||||
{
|
||||
struct sock *sk, *prev = NULL;
|
||||
int ret = NET_RX_SUCCESS;
|
||||
__le16 pan_id, short_addr;
|
||||
__le64 hw_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);
|
||||
hw_addr = ieee802154_devaddr_from_raw(dev->dev_addr);
|
||||
|
||||
read_lock(&dgram_lock);
|
||||
sk_for_each(sk, &dgram_head) {
|
||||
if (ieee802154_match_sock(hw_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;
|
||||
}
|
||||
|
||||
static int dgram_getsockopt(struct sock *sk, int level, int optname,
|
||||
char __user *optval, int __user *optlen)
|
||||
{
|
||||
struct dgram_sock *ro = dgram_sk(sk);
|
||||
|
||||
int val, len;
|
||||
|
||||
if (level != SOL_IEEE802154)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
if (get_user(len, optlen))
|
||||
return -EFAULT;
|
||||
|
||||
len = min_t(unsigned int, len, sizeof(int));
|
||||
|
||||
switch (optname) {
|
||||
case WPAN_WANTACK:
|
||||
val = ro->want_ack;
|
||||
break;
|
||||
case WPAN_SECURITY:
|
||||
if (!ro->secen_override)
|
||||
val = WPAN_SECURITY_DEFAULT;
|
||||
else if (ro->secen)
|
||||
val = WPAN_SECURITY_ON;
|
||||
else
|
||||
val = WPAN_SECURITY_OFF;
|
||||
break;
|
||||
case WPAN_SECURITY_LEVEL:
|
||||
if (!ro->seclevel_override)
|
||||
val = WPAN_SECURITY_LEVEL_DEFAULT;
|
||||
else
|
||||
val = ro->seclevel;
|
||||
break;
|
||||
default:
|
||||
return -ENOPROTOOPT;
|
||||
}
|
||||
|
||||
if (put_user(len, optlen))
|
||||
return -EFAULT;
|
||||
if (copy_to_user(optval, &val, len))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dgram_setsockopt(struct sock *sk, int level, int optname,
|
||||
char __user *optval, unsigned int optlen)
|
||||
{
|
||||
struct dgram_sock *ro = dgram_sk(sk);
|
||||
struct net *net = sock_net(sk);
|
||||
int val;
|
||||
int err = 0;
|
||||
|
||||
if (optlen < sizeof(int))
|
||||
return -EINVAL;
|
||||
|
||||
if (get_user(val, (int __user *)optval))
|
||||
return -EFAULT;
|
||||
|
||||
lock_sock(sk);
|
||||
|
||||
switch (optname) {
|
||||
case WPAN_WANTACK:
|
||||
ro->want_ack = !!val;
|
||||
break;
|
||||
case WPAN_SECURITY:
|
||||
if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
|
||||
!ns_capable(net->user_ns, CAP_NET_RAW)) {
|
||||
err = -EPERM;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (val) {
|
||||
case WPAN_SECURITY_DEFAULT:
|
||||
ro->secen_override = 0;
|
||||
break;
|
||||
case WPAN_SECURITY_ON:
|
||||
ro->secen_override = 1;
|
||||
ro->secen = 1;
|
||||
break;
|
||||
case WPAN_SECURITY_OFF:
|
||||
ro->secen_override = 1;
|
||||
ro->secen = 0;
|
||||
break;
|
||||
default:
|
||||
err = -EINVAL;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case WPAN_SECURITY_LEVEL:
|
||||
if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
|
||||
!ns_capable(net->user_ns, CAP_NET_RAW)) {
|
||||
err = -EPERM;
|
||||
break;
|
||||
}
|
||||
|
||||
if (val < WPAN_SECURITY_LEVEL_DEFAULT ||
|
||||
val > IEEE802154_SCF_SECLEVEL_ENC_MIC128) {
|
||||
err = -EINVAL;
|
||||
} else if (val == WPAN_SECURITY_LEVEL_DEFAULT) {
|
||||
ro->seclevel_override = 0;
|
||||
} else {
|
||||
ro->seclevel_override = 1;
|
||||
ro->seclevel = val;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
err = -ENOPROTOOPT;
|
||||
break;
|
||||
}
|
||||
|
||||
release_sock(sk);
|
||||
return err;
|
||||
}
|
||||
|
||||
static 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,
|
||||
.getsockopt = dgram_getsockopt,
|
||||
.setsockopt = dgram_setsockopt,
|
||||
};
|
||||
|
||||
static const struct proto_ops ieee802154_dgram_ops = {
|
||||
.family = PF_IEEE802154,
|
||||
.owner = THIS_MODULE,
|
||||
|
|
|
|||
|
|
@ -1,549 +0,0 @@
|
|||
/*
|
||||
* IEEE 802.15.4 dgram 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.
|
||||
*
|
||||
* Written by:
|
||||
* Sergey Lapin <slapin@ossfans.org>
|
||||
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
|
||||
*/
|
||||
|
||||
#include <linux/capability.h>
|
||||
#include <linux/net.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/if_arp.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/ieee802154.h>
|
||||
#include <net/sock.h>
|
||||
#include <net/af_ieee802154.h>
|
||||
#include <net/ieee802154_netdev.h>
|
||||
|
||||
#include <asm/ioctls.h>
|
||||
|
||||
#include "af802154.h"
|
||||
|
||||
static HLIST_HEAD(dgram_head);
|
||||
static DEFINE_RWLOCK(dgram_lock);
|
||||
|
||||
struct dgram_sock {
|
||||
struct sock sk;
|
||||
|
||||
struct ieee802154_addr src_addr;
|
||||
struct ieee802154_addr dst_addr;
|
||||
|
||||
unsigned int bound:1;
|
||||
unsigned int connected:1;
|
||||
unsigned int want_ack:1;
|
||||
unsigned int secen:1;
|
||||
unsigned int secen_override:1;
|
||||
unsigned int seclevel:3;
|
||||
unsigned int seclevel_override:1;
|
||||
};
|
||||
|
||||
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->want_ack = 1;
|
||||
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 ieee802154_addr haddr;
|
||||
struct dgram_sock *ro = dgram_sk(sk);
|
||||
int err = -EINVAL;
|
||||
struct net_device *dev;
|
||||
|
||||
lock_sock(sk);
|
||||
|
||||
ro->bound = 0;
|
||||
|
||||
if (len < sizeof(*addr))
|
||||
goto out;
|
||||
|
||||
if (addr->family != AF_IEEE802154)
|
||||
goto out;
|
||||
|
||||
ieee802154_addr_from_sa(&haddr, &addr->addr);
|
||||
dev = ieee802154_get_dev(sock_net(sk), &haddr);
|
||||
if (!dev) {
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (dev->type != ARPHRD_IEEE802154) {
|
||||
err = -ENODEV;
|
||||
goto out_put;
|
||||
}
|
||||
|
||||
ro->src_addr = haddr;
|
||||
|
||||
ro->bound = 1;
|
||||
err = 0;
|
||||
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 = sk_wmem_alloc_get(sk);
|
||||
|
||||
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.
|
||||
*/
|
||||
amount = skb->len - ieee802154_hdr_length(skb);
|
||||
}
|
||||
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;
|
||||
}
|
||||
|
||||
ieee802154_addr_from_sa(&ro->dst_addr, &addr->addr);
|
||||
ro->connected = 1;
|
||||
|
||||
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->connected = 0;
|
||||
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 int mtu;
|
||||
struct sk_buff *skb;
|
||||
struct ieee802154_mac_cb *cb;
|
||||
struct dgram_sock *ro = dgram_sk(sk);
|
||||
struct ieee802154_addr dst_addr;
|
||||
int hlen, tlen;
|
||||
int err;
|
||||
|
||||
if (msg->msg_flags & MSG_OOB) {
|
||||
pr_debug("msg->msg_flags = 0x%x\n", msg->msg_flags);
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
|
||||
if (!ro->connected && !msg->msg_name)
|
||||
return -EDESTADDRREQ;
|
||||
else if (ro->connected && msg->msg_name)
|
||||
return -EISCONN;
|
||||
|
||||
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);
|
||||
|
||||
if (size > mtu) {
|
||||
pr_debug("size = %Zu, mtu = %u\n", size, mtu);
|
||||
err = -EMSGSIZE;
|
||||
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_network_header(skb);
|
||||
|
||||
cb = mac_cb_init(skb);
|
||||
cb->type = IEEE802154_FC_TYPE_DATA;
|
||||
cb->ackreq = ro->want_ack;
|
||||
|
||||
if (msg->msg_name) {
|
||||
DECLARE_SOCKADDR(struct sockaddr_ieee802154*,
|
||||
daddr, msg->msg_name);
|
||||
|
||||
ieee802154_addr_from_sa(&dst_addr, &daddr->addr);
|
||||
} else {
|
||||
dst_addr = ro->dst_addr;
|
||||
}
|
||||
|
||||
cb->secen = ro->secen;
|
||||
cb->secen_override = ro->secen_override;
|
||||
cb->seclevel = ro->seclevel;
|
||||
cb->seclevel_override = ro->seclevel_override;
|
||||
|
||||
err = dev_hard_header(skb, dev, ETH_P_IEEE802154, &dst_addr,
|
||||
ro->bound ? &ro->src_addr : NULL, size);
|
||||
if (err < 0)
|
||||
goto out_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 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;
|
||||
DECLARE_SOCKADDR(struct sockaddr_ieee802154 *, saddr, msg->msg_name);
|
||||
|
||||
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_msg(skb, 0, msg, copied);
|
||||
if (err)
|
||||
goto done;
|
||||
|
||||
sock_recv_ts_and_drops(msg, sk, skb);
|
||||
|
||||
if (saddr) {
|
||||
saddr->family = AF_IEEE802154;
|
||||
ieee802154_addr_to_sa(&saddr->addr, &mac_cb(skb)->source);
|
||||
*addr_len = sizeof(*saddr);
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
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;
|
||||
}
|
||||
|
||||
static inline bool
|
||||
ieee802154_match_sock(__le64 hw_addr, __le16 pan_id, __le16 short_addr,
|
||||
struct dgram_sock *ro)
|
||||
{
|
||||
if (!ro->bound)
|
||||
return true;
|
||||
|
||||
if (ro->src_addr.mode == IEEE802154_ADDR_LONG &&
|
||||
hw_addr == ro->src_addr.extended_addr)
|
||||
return true;
|
||||
|
||||
if (ro->src_addr.mode == IEEE802154_ADDR_SHORT &&
|
||||
pan_id == ro->src_addr.pan_id &&
|
||||
short_addr == ro->src_addr.short_addr)
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
|
||||
{
|
||||
struct sock *sk, *prev = NULL;
|
||||
int ret = NET_RX_SUCCESS;
|
||||
__le16 pan_id, short_addr;
|
||||
__le64 hw_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);
|
||||
hw_addr = ieee802154_devaddr_from_raw(dev->dev_addr);
|
||||
|
||||
read_lock(&dgram_lock);
|
||||
sk_for_each(sk, &dgram_head) {
|
||||
if (ieee802154_match_sock(hw_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;
|
||||
}
|
||||
|
||||
static int dgram_getsockopt(struct sock *sk, int level, int optname,
|
||||
char __user *optval, int __user *optlen)
|
||||
{
|
||||
struct dgram_sock *ro = dgram_sk(sk);
|
||||
|
||||
int val, len;
|
||||
|
||||
if (level != SOL_IEEE802154)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
if (get_user(len, optlen))
|
||||
return -EFAULT;
|
||||
|
||||
len = min_t(unsigned int, len, sizeof(int));
|
||||
|
||||
switch (optname) {
|
||||
case WPAN_WANTACK:
|
||||
val = ro->want_ack;
|
||||
break;
|
||||
case WPAN_SECURITY:
|
||||
if (!ro->secen_override)
|
||||
val = WPAN_SECURITY_DEFAULT;
|
||||
else if (ro->secen)
|
||||
val = WPAN_SECURITY_ON;
|
||||
else
|
||||
val = WPAN_SECURITY_OFF;
|
||||
break;
|
||||
case WPAN_SECURITY_LEVEL:
|
||||
if (!ro->seclevel_override)
|
||||
val = WPAN_SECURITY_LEVEL_DEFAULT;
|
||||
else
|
||||
val = ro->seclevel;
|
||||
break;
|
||||
default:
|
||||
return -ENOPROTOOPT;
|
||||
}
|
||||
|
||||
if (put_user(len, optlen))
|
||||
return -EFAULT;
|
||||
if (copy_to_user(optval, &val, len))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dgram_setsockopt(struct sock *sk, int level, int optname,
|
||||
char __user *optval, unsigned int optlen)
|
||||
{
|
||||
struct dgram_sock *ro = dgram_sk(sk);
|
||||
struct net *net = sock_net(sk);
|
||||
int val;
|
||||
int err = 0;
|
||||
|
||||
if (optlen < sizeof(int))
|
||||
return -EINVAL;
|
||||
|
||||
if (get_user(val, (int __user *)optval))
|
||||
return -EFAULT;
|
||||
|
||||
lock_sock(sk);
|
||||
|
||||
switch (optname) {
|
||||
case WPAN_WANTACK:
|
||||
ro->want_ack = !!val;
|
||||
break;
|
||||
case WPAN_SECURITY:
|
||||
if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
|
||||
!ns_capable(net->user_ns, CAP_NET_RAW)) {
|
||||
err = -EPERM;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (val) {
|
||||
case WPAN_SECURITY_DEFAULT:
|
||||
ro->secen_override = 0;
|
||||
break;
|
||||
case WPAN_SECURITY_ON:
|
||||
ro->secen_override = 1;
|
||||
ro->secen = 1;
|
||||
break;
|
||||
case WPAN_SECURITY_OFF:
|
||||
ro->secen_override = 1;
|
||||
ro->secen = 0;
|
||||
break;
|
||||
default:
|
||||
err = -EINVAL;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case WPAN_SECURITY_LEVEL:
|
||||
if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
|
||||
!ns_capable(net->user_ns, CAP_NET_RAW)) {
|
||||
err = -EPERM;
|
||||
break;
|
||||
}
|
||||
|
||||
if (val < WPAN_SECURITY_LEVEL_DEFAULT ||
|
||||
val > IEEE802154_SCF_SECLEVEL_ENC_MIC128) {
|
||||
err = -EINVAL;
|
||||
} else if (val == WPAN_SECURITY_LEVEL_DEFAULT) {
|
||||
ro->seclevel_override = 0;
|
||||
} else {
|
||||
ro->seclevel_override = 1;
|
||||
ro->seclevel = val;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
err = -ENOPROTOOPT;
|
||||
break;
|
||||
}
|
||||
|
||||
release_sock(sk);
|
||||
return err;
|
||||
}
|
||||
|
||||
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,
|
||||
.getsockopt = dgram_getsockopt,
|
||||
.setsockopt = dgram_setsockopt,
|
||||
};
|
||||
|
||||
|
|
@ -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,
|
||||
};
|
||||
Loading…
Reference in a new issue