2009-06-08 12:18:48 +00:00
|
|
|
/*
|
2010-10-21 21:25:25 +00:00
|
|
|
* IEEE 802.15.4 dgram socket interface
|
2009-06-08 12:18:48 +00:00
|
|
|
*
|
|
|
|
* Copyright 2007, 2008 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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|
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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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*
|
|
|
|
* You should have received a copy of the GNU General Public License along
|
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Written by:
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|
|
|
* Sergey Lapin <slapin@ossfans.org>
|
|
|
|
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
|
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|
*/
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|
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|
|
#include <linux/net.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/if_arp.h>
|
|
|
|
#include <linux/list.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
|
|
|
#include <linux/slab.h>
|
2009-06-08 12:18:48 +00:00
|
|
|
#include <net/sock.h>
|
2009-07-23 12:56:29 +00:00
|
|
|
#include <net/af_ieee802154.h>
|
|
|
|
#include <net/ieee802154.h>
|
|
|
|
#include <net/ieee802154_netdev.h>
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
#include <asm/ioctls.h>
|
|
|
|
|
|
|
|
#include "af802154.h"
|
|
|
|
|
|
|
|
static HLIST_HEAD(dgram_head);
|
|
|
|
static DEFINE_RWLOCK(dgram_lock);
|
|
|
|
|
|
|
|
struct dgram_sock {
|
|
|
|
struct sock sk;
|
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
struct ieee802154_addr src_addr;
|
|
|
|
struct ieee802154_addr dst_addr;
|
2009-08-07 02:58:42 +00:00
|
|
|
|
2012-04-15 05:58:06 +00:00
|
|
|
unsigned int bound:1;
|
|
|
|
unsigned int want_ack:1;
|
2009-06-08 12:18:48 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
ro->dst_addr.mode = IEEE802154_ADDR_LONG;
|
2014-03-20 13:57:03 +00:00
|
|
|
ro->dst_addr.pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
|
2009-08-07 02:58:43 +00:00
|
|
|
ro->want_ack = 1;
|
2014-03-14 20:24:01 +00:00
|
|
|
memset(&ro->dst_addr.extended_addr, 0xff, IEEE802154_ADDR_LEN);
|
2009-06-08 12:18:48 +00:00
|
|
|
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;
|
2014-03-14 20:24:01 +00:00
|
|
|
struct ieee802154_addr haddr;
|
2009-06-08 12:18:48 +00:00
|
|
|
struct dgram_sock *ro = dgram_sk(sk);
|
2009-08-07 02:58:42 +00:00
|
|
|
int err = -EINVAL;
|
2009-06-08 12:18:48 +00:00
|
|
|
struct net_device *dev;
|
|
|
|
|
2009-08-07 02:58:42 +00:00
|
|
|
lock_sock(sk);
|
|
|
|
|
2009-06-08 12:18:48 +00:00
|
|
|
ro->bound = 0;
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|
|
|
|
|
|
|
if (len < sizeof(*addr))
|
2009-08-07 02:58:42 +00:00
|
|
|
goto out;
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
if (addr->family != AF_IEEE802154)
|
2009-08-07 02:58:42 +00:00
|
|
|
goto out;
|
2009-06-08 12:18:48 +00:00
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
ieee802154_addr_from_sa(&haddr, &addr->addr);
|
|
|
|
dev = ieee802154_get_dev(sock_net(sk), &haddr);
|
2009-06-08 12:18:48 +00:00
|
|
|
if (!dev) {
|
|
|
|
err = -ENODEV;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dev->type != ARPHRD_IEEE802154) {
|
|
|
|
err = -ENODEV;
|
|
|
|
goto out_put;
|
|
|
|
}
|
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
ro->src_addr = haddr;
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
ro->bound = 1;
|
2009-08-07 02:58:42 +00:00
|
|
|
err = 0;
|
2009-06-08 12:18:48 +00:00
|
|
|
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:
|
|
|
|
{
|
2009-06-18 02:05:41 +00:00
|
|
|
int amount = sk_wmem_alloc_get(sk);
|
|
|
|
|
2009-06-08 12:18:48 +00:00
|
|
|
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.
|
|
|
|
*/
|
2014-03-14 20:24:01 +00:00
|
|
|
amount = skb->len - ieee802154_hdr_length(skb);
|
2009-06-08 12:18:48 +00:00
|
|
|
}
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
ieee802154_addr_from_sa(&ro->dst_addr, &addr->addr);
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
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);
|
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
ro->dst_addr.mode = IEEE802154_ADDR_LONG;
|
|
|
|
memset(&ro->dst_addr.extended_addr, 0xff, IEEE802154_ADDR_LEN);
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
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;
|
2012-04-15 05:58:06 +00:00
|
|
|
unsigned int mtu;
|
2009-06-08 12:18:48 +00:00
|
|
|
struct sk_buff *skb;
|
2014-05-14 15:43:08 +00:00
|
|
|
struct ieee802154_mac_cb *cb;
|
2009-06-08 12:18:48 +00:00
|
|
|
struct dgram_sock *ro = dgram_sk(sk);
|
2011-11-18 02:20:04 +00:00
|
|
|
int hlen, tlen;
|
2009-06-08 12:18:48 +00:00
|
|
|
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);
|
|
|
|
|
2012-07-02 01:29:55 +00:00
|
|
|
if (size > mtu) {
|
|
|
|
pr_debug("size = %Zu, mtu = %u\n", size, mtu);
|
2014-03-14 20:24:04 +00:00
|
|
|
err = -EMSGSIZE;
|
2012-07-02 01:29:55 +00:00
|
|
|
goto out_dev;
|
|
|
|
}
|
|
|
|
|
2011-11-18 02:20:04 +00:00
|
|
|
hlen = LL_RESERVED_SPACE(dev);
|
|
|
|
tlen = dev->needed_tailroom;
|
|
|
|
skb = sock_alloc_send_skb(sk, hlen + tlen + size,
|
2009-06-08 12:18:48 +00:00
|
|
|
msg->msg_flags & MSG_DONTWAIT,
|
|
|
|
&err);
|
|
|
|
if (!skb)
|
|
|
|
goto out_dev;
|
|
|
|
|
2011-11-18 02:20:04 +00:00
|
|
|
skb_reserve(skb, hlen);
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
skb_reset_network_header(skb);
|
|
|
|
|
2014-05-14 15:43:08 +00:00
|
|
|
cb = mac_cb_init(skb);
|
|
|
|
cb->type = IEEE802154_FC_TYPE_DATA;
|
|
|
|
cb->ackreq = ro->want_ack;
|
2009-08-07 02:58:43 +00:00
|
|
|
|
2009-06-08 12:18:48 +00:00
|
|
|
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;
|
|
|
|
|
|
|
|
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 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;
|
2014-01-17 21:53:15 +00:00
|
|
|
DECLARE_SOCKADDR(struct sockaddr_ieee802154 *, saddr, msg->msg_name);
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
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;
|
|
|
|
|
net: Generalize socket rx gap / receive queue overflow cmsg
Create a new socket level option to report number of queue overflows
Recently I augmented the AF_PACKET protocol to report the number of frames lost
on the socket receive queue between any two enqueued frames. This value was
exported via a SOL_PACKET level cmsg. AFter I completed that work it was
requested that this feature be generalized so that any datagram oriented socket
could make use of this option. As such I've created this patch, It creates a
new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a
SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue
overflowed between any two given frames. It also augments the AF_PACKET
protocol to take advantage of this new feature (as it previously did not touch
sk->sk_drops, which this patch uses to record the overflow count). Tested
successfully by me.
Notes:
1) Unlike my previous patch, this patch simply records the sk_drops value, which
is not a number of drops between packets, but rather a total number of drops.
Deltas must be computed in user space.
2) While this patch currently works with datagram oriented protocols, it will
also be accepted by non-datagram oriented protocols. I'm not sure if thats
agreeable to everyone, but my argument in favor of doing so is that, for those
protocols which aren't applicable to this option, sk_drops will always be zero,
and reporting no drops on a receive queue that isn't used for those
non-participating protocols seems reasonable to me. This also saves us having
to code in a per-protocol opt in mechanism.
3) This applies cleanly to net-next assuming that commit
977750076d98c7ff6cbda51858bb5a5894a9d9ab (my af packet cmsg patch) is reverted
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-12 20:26:31 +00:00
|
|
|
sock_recv_ts_and_drops(msg, sk, skb);
|
2009-06-08 12:18:48 +00:00
|
|
|
|
2013-03-26 12:41:29 +00:00
|
|
|
if (saddr) {
|
|
|
|
saddr->family = AF_IEEE802154;
|
2014-03-14 20:24:02 +00:00
|
|
|
ieee802154_addr_to_sa(&saddr->addr, &mac_cb(skb)->source);
|
2013-03-26 12:41:29 +00:00
|
|
|
*addr_len = sizeof(*saddr);
|
2013-11-18 03:20:45 +00:00
|
|
|
}
|
2013-03-26 12:41:29 +00:00
|
|
|
|
2009-06-08 12:18:48 +00:00
|
|
|
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)
|
|
|
|
{
|
2014-03-17 17:30:19 +00:00
|
|
|
skb = skb_share_check(skb, GFP_ATOMIC);
|
|
|
|
if (!skb)
|
|
|
|
return NET_RX_DROP;
|
|
|
|
|
2009-06-08 12:18:48 +00:00
|
|
|
if (sock_queue_rcv_skb(sk, skb) < 0) {
|
|
|
|
kfree_skb(skb);
|
|
|
|
return NET_RX_DROP;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NET_RX_SUCCESS;
|
|
|
|
}
|
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
static inline bool
|
|
|
|
ieee802154_match_sock(__le64 hw_addr, __le16 pan_id, __le16 short_addr,
|
|
|
|
struct dgram_sock *ro)
|
2009-06-08 12:18:48 +00:00
|
|
|
{
|
|
|
|
if (!ro->bound)
|
2014-03-14 20:24:01 +00:00
|
|
|
return true;
|
2009-06-08 12:18:48 +00:00
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
if (ro->src_addr.mode == IEEE802154_ADDR_LONG &&
|
|
|
|
hw_addr == ro->src_addr.extended_addr)
|
|
|
|
return true;
|
2009-06-08 12:18:48 +00:00
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
if (ro->src_addr.mode == IEEE802154_ADDR_SHORT &&
|
|
|
|
pan_id == ro->src_addr.pan_id &&
|
|
|
|
short_addr == ro->src_addr.short_addr)
|
|
|
|
return true;
|
2009-06-08 12:18:48 +00:00
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
return false;
|
2009-06-08 12:18:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct sock *sk, *prev = NULL;
|
|
|
|
int ret = NET_RX_SUCCESS;
|
2014-03-14 20:24:01 +00:00
|
|
|
__le16 pan_id, short_addr;
|
|
|
|
__le64 hw_addr;
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
/* Data frame processing */
|
|
|
|
BUG_ON(dev->type != ARPHRD_IEEE802154);
|
|
|
|
|
2014-03-14 20:24:01 +00:00
|
|
|
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);
|
2009-06-08 12:18:48 +00:00
|
|
|
|
|
|
|
read_lock(&dgram_lock);
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-28 01:06:00 +00:00
|
|
|
sk_for_each(sk, &dgram_head) {
|
2014-03-14 20:24:01 +00:00
|
|
|
if (ieee802154_match_sock(hw_addr, pan_id, short_addr,
|
|
|
|
dgram_sk(sk))) {
|
2009-06-08 12:18:48 +00:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2009-08-03 13:53:00 +00:00
|
|
|
static int dgram_getsockopt(struct sock *sk, int level, int optname,
|
|
|
|
char __user *optval, int __user *optlen)
|
|
|
|
{
|
2009-08-07 02:58:43 +00:00
|
|
|
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;
|
|
|
|
default:
|
|
|
|
return -ENOPROTOOPT;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (put_user(len, optlen))
|
|
|
|
return -EFAULT;
|
|
|
|
if (copy_to_user(optval, &val, len))
|
|
|
|
return -EFAULT;
|
|
|
|
return 0;
|
2009-08-03 13:53:00 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int dgram_setsockopt(struct sock *sk, int level, int optname,
|
2009-09-30 23:12:20 +00:00
|
|
|
char __user *optval, unsigned int optlen)
|
2009-08-03 13:53:00 +00:00
|
|
|
{
|
2009-08-07 02:58:43 +00:00
|
|
|
struct dgram_sock *ro = dgram_sk(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;
|
|
|
|
default:
|
|
|
|
err = -ENOPROTOOPT;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
release_sock(sk);
|
|
|
|
return err;
|
2009-08-03 13:53:00 +00:00
|
|
|
}
|
|
|
|
|
2009-06-08 12:18:48 +00:00
|
|
|
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,
|
2009-08-03 13:53:00 +00:00
|
|
|
.getsockopt = dgram_getsockopt,
|
|
|
|
.setsockopt = dgram_setsockopt,
|
2009-06-08 12:18:48 +00:00
|
|
|
};
|
|
|
|
|