Contributors: 20
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Matt Mackall |
157 |
33.55% |
4 |
8.33% |
| Stephen Hemminger |
52 |
11.11% |
4 |
8.33% |
| Joe Perches |
36 |
7.69% |
1 |
2.08% |
| Américo Wang |
35 |
7.48% |
4 |
8.33% |
| Herbert Xu |
35 |
7.48% |
3 |
6.25% |
| Eric Dumazet |
32 |
6.84% |
5 |
10.42% |
| Linus Torvalds (pre-git) |
31 |
6.62% |
5 |
10.42% |
| Breno Leitão |
25 |
5.34% |
7 |
14.58% |
| Neil Horman |
24 |
5.13% |
3 |
6.25% |
| Jeff Moyer |
10 |
2.14% |
2 |
4.17% |
| Uday Shankar |
7 |
1.50% |
1 |
2.08% |
| Jiri Pirko |
5 |
1.07% |
1 |
2.08% |
| Elena Reshetova |
4 |
0.85% |
1 |
2.08% |
| Eric W. Biedermann |
4 |
0.85% |
1 |
2.08% |
| David S. Miller |
4 |
0.85% |
1 |
2.08% |
| Ding Tianhong |
3 |
0.64% |
1 |
2.08% |
| Debabrata Banerjee |
1 |
0.21% |
1 |
2.08% |
| Satyam Sharma |
1 |
0.21% |
1 |
2.08% |
| David Howells |
1 |
0.21% |
1 |
2.08% |
| Greg Kroah-Hartman |
1 |
0.21% |
1 |
2.08% |
| Total |
468 |
|
48 |
|
/* 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>
#include <linux/ip.h>
#include <linux/udp.h>
union inet_addr {
__be32 ip;
struct in6_addr in6;
};
/*
* Maximum payload netpoll's preallocated skb pool can carry. Keep this in
* sync with the buffer size used by refill_skbs() in net/core/netpoll.c;
* callers (e.g. netconsole) use it to detect requests the pool can never
* satisfy and avoid dequeuing a pooled skb that would later trip
* skb_over_panic() in skb_put().
*/
#define MAX_UDP_CHUNK 1460
#define MAX_SKB_SIZE \
(sizeof(struct ethhdr) + \
sizeof(struct iphdr) + \
sizeof(struct udphdr) + \
MAX_UDP_CHUNK)
struct netpoll {
struct net_device *dev;
netdevice_tracker dev_tracker;
/*
* Either dev_name or dev_mac can be used to specify the local
* interface - dev_name is used if it is a nonempty string, else
* dev_mac is used.
*/
char dev_name[IFNAMSIZ];
u8 dev_mac[ETH_ALEN];
const char *name;
union inet_addr local_ip, remote_ip;
bool ipv6;
u16 local_port, remote_port;
u8 remote_mac[ETH_ALEN];
struct sk_buff_head skb_pool;
struct work_struct refill_wq;
};
#define np_info(np, fmt, ...) \
pr_info("%s: " fmt, np->name, ##__VA_ARGS__)
#define np_err(np, fmt, ...) \
pr_err("%s: " fmt, np->name, ##__VA_ARGS__)
#define np_notice(np, fmt, ...) \
pr_notice("%s: " fmt, np->name, ##__VA_ARGS__)
struct netpoll_info {
refcount_t refcnt;
struct semaphore dev_lock;
struct sk_buff_head txq;
struct delayed_work tx_work;
struct rcu_head rcu;
};
#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
int __netpoll_setup(struct netpoll *np, struct net_device *ndev);
int netpoll_setup(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);
void netpoll_zap_completion_queue(void);
#ifdef CONFIG_NETPOLL
static inline void *netpoll_poll_lock(struct napi_struct *napi)
{
struct net_device *dev = napi->dev;
if (dev && rcu_access_pointer(dev->npinfo)) {
int owner = smp_processor_id();
while (cmpxchg(&napi->poll_owner, -1, owner) != -1)
cpu_relax();
return napi;
}
return NULL;
}
static inline void netpoll_poll_unlock(void *have)
{
struct napi_struct *napi = have;
if (napi)
smp_store_release(&napi->poll_owner, -1);
}
static inline bool netpoll_tx_running(struct net_device *dev)
{
return irqs_disabled();
}
#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