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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/linux/netpoll.h
2 * Common code for low-level network console, dump, and debugger code
4 * Derived from netconsole, kgdb-over-ethernet, and netdump patches
7 #ifndef _LINUX_NETPOLL_H
8 #define _LINUX_NETPOLL_H
10 #include <linux/netdevice.h>
11 #include <linux/interrupt.h>
12 #include <linux/rcupdate.h>
13 #include <linux/list.h>
24 struct net_device
*dev
;
25 char dev_name
[IFNAMSIZ
];
28 union inet_addr local_ip
, remote_ip
;
30 u16 local_port
, remote_port
;
31 u8 remote_mac
[ETH_ALEN
];
33 struct work_struct cleanup_work
;
39 struct semaphore dev_lock
;
41 struct sk_buff_head txq
;
43 struct delayed_work tx_work
;
45 struct netpoll
*netpoll
;
50 extern void netpoll_poll_disable(struct net_device
*dev
);
51 extern void netpoll_poll_enable(struct net_device
*dev
);
53 static inline void netpoll_poll_disable(struct net_device
*dev
) { return; }
54 static inline void netpoll_poll_enable(struct net_device
*dev
) { return; }
57 void netpoll_send_udp(struct netpoll
*np
, const char *msg
, int len
);
58 void netpoll_print_options(struct netpoll
*np
);
59 int netpoll_parse_options(struct netpoll
*np
, char *opt
);
60 int __netpoll_setup(struct netpoll
*np
, struct net_device
*ndev
);
61 int netpoll_setup(struct netpoll
*np
);
62 void __netpoll_cleanup(struct netpoll
*np
);
63 void __netpoll_free_async(struct netpoll
*np
);
64 void netpoll_cleanup(struct netpoll
*np
);
65 void netpoll_send_skb_on_dev(struct netpoll
*np
, struct sk_buff
*skb
,
66 struct net_device
*dev
);
67 static inline void netpoll_send_skb(struct netpoll
*np
, struct sk_buff
*skb
)
70 local_irq_save(flags
);
71 netpoll_send_skb_on_dev(np
, skb
, np
->dev
);
72 local_irq_restore(flags
);
76 static inline void *netpoll_poll_lock(struct napi_struct
*napi
)
78 struct net_device
*dev
= napi
->dev
;
80 if (dev
&& dev
->npinfo
) {
81 int owner
= smp_processor_id();
83 while (cmpxchg(&napi
->poll_owner
, -1, owner
) != -1)
91 static inline void netpoll_poll_unlock(void *have
)
93 struct napi_struct
*napi
= have
;
96 smp_store_release(&napi
->poll_owner
, -1);
99 static inline bool netpoll_tx_running(struct net_device
*dev
)
101 return irqs_disabled();
105 static inline void *netpoll_poll_lock(struct napi_struct
*napi
)
109 static inline void netpoll_poll_unlock(void *have
)
112 static inline void netpoll_netdev_init(struct net_device
*dev
)
115 static inline bool netpoll_tx_running(struct net_device
*dev
)