Contributors: 17
	  
        
          | Author | 
          Tokens | 
          Token Proportion | 
          Commits | 
          Commit Proportion | 
        
	  
	  
        
        
          | Eric Dumazet | 
          131 | 
          31.57% | 
          5 | 
          12.82% | 
        
        
          | David S. Miller | 
          87 | 
          20.96% | 
          8 | 
          20.51% | 
        
        
          | Linus Torvalds (pre-git) | 
          80 | 
          19.28% | 
          9 | 
          23.08% | 
        
        
          | Alexey Dobriyan | 
          51 | 
          12.29% | 
          1 | 
          2.56% | 
        
        
          | Hideaki Yoshifuji / 吉藤英明 | 
          15 | 
          3.61% | 
          2 | 
          5.13% | 
        
        
          | Eric W. Biedermann | 
          13 | 
          3.13% | 
          2 | 
          5.13% | 
        
        
          | Herbert Xu | 
          11 | 
          2.65% | 
          2 | 
          5.13% | 
        
        
          | Alexey Kuznetsov | 
          6 | 
          1.45% | 
          1 | 
          2.56% | 
        
        
          | Daniel Lezcano | 
          4 | 
          0.96% | 
          1 | 
          2.56% | 
        
        
          | Julian Anastasov | 
          4 | 
          0.96% | 
          1 | 
          2.56% | 
        
        
          | Paul Mundt | 
          3 | 
          0.72% | 
          1 | 
          2.56% | 
        
        
          | Hangbin Liu | 
          3 | 
          0.72% | 
          1 | 
          2.56% | 
        
        
          | Christoph Lameter | 
          2 | 
          0.48% | 
          1 | 
          2.56% | 
        
        
          | Tejun Heo | 
          2 | 
          0.48% | 
          1 | 
          2.56% | 
        
        
          | Greg Kroah-Hartman | 
          1 | 
          0.24% | 
          1 | 
          2.56% | 
        
        
          | Steffen Klassert | 
          1 | 
          0.24% | 
          1 | 
          2.56% | 
        
        
          | Jon Maxwell | 
          1 | 
          0.24% | 
          1 | 
          2.56% | 
        
	  
	  
        
          | Total | 
          415 | 
           | 
          39 | 
           | 
	    
	  
    
 
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NET_DST_OPS_H
#define _NET_DST_OPS_H
#include <linux/types.h>
#include <linux/percpu_counter.h>
#include <linux/cache.h>
struct dst_entry;
struct kmem_cachep;
struct net_device;
struct sk_buff;
struct sock;
struct net;
struct dst_ops {
	unsigned short		family;
	unsigned int		gc_thresh;
	void			(*gc)(struct dst_ops *ops);
	struct dst_entry *	(*check)(struct dst_entry *, __u32 cookie);
	unsigned int		(*default_advmss)(const struct dst_entry *);
	unsigned int		(*mtu)(const struct dst_entry *);
	u32 *			(*cow_metrics)(struct dst_entry *, unsigned long);
	void			(*destroy)(struct dst_entry *);
	void			(*ifdown)(struct dst_entry *,
					  struct net_device *dev);
	void			(*negative_advice)(struct sock *sk, struct dst_entry *);
	void			(*link_failure)(struct sk_buff *);
	void			(*update_pmtu)(struct dst_entry *dst, struct sock *sk,
					       struct sk_buff *skb, u32 mtu,
					       bool confirm_neigh);
	void			(*redirect)(struct dst_entry *dst, struct sock *sk,
					    struct sk_buff *skb);
	int			(*local_out)(struct net *net, struct sock *sk, struct sk_buff *skb);
	struct neighbour *	(*neigh_lookup)(const struct dst_entry *dst,
						struct sk_buff *skb,
						const void *daddr);
	void			(*confirm_neigh)(const struct dst_entry *dst,
						 const void *daddr);
	struct kmem_cache	*kmem_cachep;
	struct percpu_counter	pcpuc_entries ____cacheline_aligned_in_smp;
};
static inline int dst_entries_get_fast(struct dst_ops *dst)
{
	return percpu_counter_read_positive(&dst->pcpuc_entries);
}
static inline int dst_entries_get_slow(struct dst_ops *dst)
{
	return percpu_counter_sum_positive(&dst->pcpuc_entries);
}
#define DST_PERCPU_COUNTER_BATCH 32
static inline void dst_entries_add(struct dst_ops *dst, int val)
{
	percpu_counter_add_batch(&dst->pcpuc_entries, val,
				 DST_PERCPU_COUNTER_BATCH);
}
static inline int dst_entries_init(struct dst_ops *dst)
{
	return percpu_counter_init(&dst->pcpuc_entries, 0, GFP_KERNEL);
}
static inline void dst_entries_destroy(struct dst_ops *dst)
{
	percpu_counter_destroy(&dst->pcpuc_entries);
}
#endif