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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374/* 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 32static 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