linux-imx

/*

 * Common framework for low-level network console, dump, and debugger code

 *

 * Sep 8 2003  Matt Mackall <mpm@selenic.com>

 *

 * based on the netconsole code from:

 *

 * Copyright (C) 2001  Ingo Molnar <mingo@redhat.com>

 * Copyright (C) 2002  Red Hat, Inc.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/moduleparam.h>

#include <linux/kernel.h>

#include <linux/netdevice.h>

#include <linux/etherdevice.h>

#include <linux/string.h>

#include <linux/if_arp.h>

#include <linux/inetdevice.h>

#include <linux/inet.h>

#include <linux/interrupt.h>

#include <linux/netpoll.h>

#include <linux/sched.h>

#include <linux/delay.h>

#include <linux/rcupdate.h>

#include <linux/workqueue.h>

#include <linux/slab.h>

#include <linux/export.h>

#include <linux/if_vlan.h>

#include <net/tcp.h>

#include <net/udp.h>

#include <net/addrconf.h>

#include <net/ndisc.h>

#include <net/ip6_checksum.h>

#include <asm/unaligned.h>

#include <trace/events/napi.h>

​

/*

 * We maintain a small pool of fully-sized skbs, to make sure the

 * message gets out even in extreme OOM situations.

 */

​

#define MAX_UDP_CHUNK 1460

#define MAX_SKBS 32

​

static struct sk_buff_head skb_pool;

​

DEFINE_STATIC_SRCU(netpoll_srcu);

​

#define USEC_PER_POLL   50

​

#define MAX_SKB_SIZE                            \

    (sizeof(struct ethhdr) +                    \

     sizeof(struct iphdr) +                     \

     sizeof(struct udphdr) +                    \

     MAX_UDP_CHUNK)

​

static void zap_completion_queue(void);

​

static unsigned int carrier_timeout = 4;

module_param(carrier_timeout, uint, 0644);

​