linux/include/linux/netpoll.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Common code for low-level network console, dump, and debugger code
 *
 * Derived from netconsole, kgdb-over-ethernet, and netdump patches
 */

#ifndef _LINUX_NETPOLL_H
#define _LINUX_NETPOLL_H

#include <linux/netdevice.h>
#include <linux/interrupt.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
#include <linux/refcount.h>

inet_addr;

struct netpoll { … };

struct netpoll_info { … };

#ifdef CONFIG_NETPOLL
void netpoll_poll_dev(struct net_device *dev);
void netpoll_poll_disable(struct net_device *dev);
void netpoll_poll_enable(struct net_device *dev);
#else
static inline void netpoll_poll_disable(struct net_device *dev) { return; }
static inline void netpoll_poll_enable(struct net_device *dev) { return; }
#endif

void netpoll_send_udp(struct netpoll *np, const char *msg, int len);
void netpoll_print_options(struct netpoll *np);
int netpoll_parse_options(struct netpoll *np, char *opt);
int __netpoll_setup(struct netpoll *np, struct net_device *ndev);
int netpoll_setup(struct netpoll *np);
void __netpoll_cleanup(struct netpoll *np);
void __netpoll_free(struct netpoll *np);
void netpoll_cleanup(struct netpoll *np);
void do_netpoll_cleanup(struct netpoll *np);
netdev_tx_t netpoll_send_skb(struct netpoll *np, struct sk_buff *skb);

#ifdef CONFIG_NETPOLL
static inline void *netpoll_poll_lock(struct napi_struct *napi)
{ … }

static inline void netpoll_poll_unlock(void *have)
{ … }

static inline bool netpoll_tx_running(struct net_device *dev)
{ … }

#else
static inline void *netpoll_poll_lock(struct napi_struct *napi)
{
	return NULL;
}
static inline void netpoll_poll_unlock(void *have)
{
}
static inline bool netpoll_tx_running(struct net_device *dev)
{
	return false;
}
#endif

#endif