https://github.com/torvalds/linux
Revision 75caf310d16cc5e2f851c048cd597f5437013368 authored by Linus Torvalds on 28 May 2020, 20:04:25 UTC, committed by Linus Torvalds on 28 May 2020, 20:04:25 UTC
Merge misc fixes from Andrew Morton: "5 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: include/asm-generic/topology.h: guard cpumask_of_node() macro argument fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info() mm: remove VM_BUG_ON(PageSlab()) from page_mapcount() mm,thp: stop leaking unreleased file pages mm/z3fold: silence kmemleak false positives of slots
Tip revision: 75caf310d16cc5e2f851c048cd597f5437013368 authored by Linus Torvalds on 28 May 2020, 20:04:25 UTC
Merge branch 'akpm' (patches from Andrew)
Merge branch 'akpm' (patches from Andrew)
Tip revision: 75caf31
nr_loopback.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* Copyright Tomi Manninen OH2BNS (oh2bns@sral.fi)
*/
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/socket.h>
#include <linux/timer.h>
#include <net/ax25.h>
#include <linux/skbuff.h>
#include <net/netrom.h>
#include <linux/init.h>
static void nr_loopback_timer(struct timer_list *);
static struct sk_buff_head loopback_queue;
static DEFINE_TIMER(loopback_timer, nr_loopback_timer);
void __init nr_loopback_init(void)
{
skb_queue_head_init(&loopback_queue);
}
static inline int nr_loopback_running(void)
{
return timer_pending(&loopback_timer);
}
int nr_loopback_queue(struct sk_buff *skb)
{
struct sk_buff *skbn;
if ((skbn = alloc_skb(skb->len, GFP_ATOMIC)) != NULL) {
skb_copy_from_linear_data(skb, skb_put(skbn, skb->len), skb->len);
skb_reset_transport_header(skbn);
skb_queue_tail(&loopback_queue, skbn);
if (!nr_loopback_running())
mod_timer(&loopback_timer, jiffies + 10);
}
kfree_skb(skb);
return 1;
}
static void nr_loopback_timer(struct timer_list *unused)
{
struct sk_buff *skb;
ax25_address *nr_dest;
struct net_device *dev;
if ((skb = skb_dequeue(&loopback_queue)) != NULL) {
nr_dest = (ax25_address *)(skb->data + 7);
dev = nr_dev_get(nr_dest);
if (dev == NULL || nr_rx_frame(skb, dev) == 0)
kfree_skb(skb);
if (dev != NULL)
dev_put(dev);
if (!skb_queue_empty(&loopback_queue) && !nr_loopback_running())
mod_timer(&loopback_timer, jiffies + 10);
}
}
void nr_loopback_clear(void)
{
del_timer_sync(&loopback_timer);
skb_queue_purge(&loopback_queue);
}
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