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Commit 09c75704 authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller
Browse files

xfrm: remove flow cache 



After rcu conversions performance degradation in forward tests isn't that
noticeable anymore.

See next patch for some numbers.

A followup patcg could then also remove genid from the policies
as we do not cache bundles anymore.

Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bd45c539

include/net/flow.h

+0 −34
Original line number Diff line number Diff line
@@ -218,40 +218,6 @@ static inline unsigned int flow_key_size(u16 family) 
	return 0;

}



#define FLOW_DIR_IN	0

#define FLOW_DIR_OUT	1

#define FLOW_DIR_FWD	2



struct net;

struct sock;

struct flow_cache_ops;



struct flow_cache_object {

	const struct flow_cache_ops *ops;

};



struct flow_cache_ops {

	struct flow_cache_object *(*get)(struct flow_cache_object *);

	int (*check)(struct flow_cache_object *);

	void (*delete)(struct flow_cache_object *);

};



typedef struct flow_cache_object *(*flow_resolve_t)(

		struct net *net, const struct flowi *key, u16 family,

		u8 dir, struct flow_cache_object *oldobj, void *ctx);



struct flow_cache_object *flow_cache_lookup(struct net *net,

					    const struct flowi *key, u16 family,

					    u8 dir, flow_resolve_t resolver,

					    void *ctx);

int flow_cache_init(struct net *net);

void flow_cache_fini(struct net *net);

void flow_cache_hp_init(void);



void flow_cache_flush(struct net *net);

void flow_cache_flush_deferred(struct net *net);

extern atomic_t flow_cache_genid;



__u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys);



static inline __u32 get_hash_from_flowi6(const struct flowi6 *fl6)

include/net/flowcache.h

deleted100644 → 0
+0 −25
Original line number Diff line number Diff line 
#ifndef _NET_FLOWCACHE_H

#define _NET_FLOWCACHE_H



#include <linux/interrupt.h>

#include <linux/types.h>

#include <linux/timer.h>

#include <linux/notifier.h>



struct flow_cache_percpu {

	struct hlist_head		*hash_table;

	unsigned int			hash_count;

	u32				hash_rnd;

	int				hash_rnd_recalc;

	struct tasklet_struct		flush_tasklet;

};



struct flow_cache {

	u32				hash_shift;

	struct flow_cache_percpu __percpu *percpu;

	struct hlist_node		node;

	unsigned int			low_watermark;

	unsigned int			high_watermark;

	struct timer_list		rnd_timer;

};

#endif	/* _NET_FLOWCACHE_H */

include/net/netns/xfrm.h

+0 −11
Original line number Diff line number Diff line
@@ -6,7 +6,6 @@ 
#include <linux/workqueue.h>

#include <linux/xfrm.h>

#include <net/dst_ops.h>

#include <net/flowcache.h>



struct ctl_table_header;
@@ -73,16 +72,6 @@ struct netns_xfrm { 
	spinlock_t xfrm_state_lock;

	spinlock_t xfrm_policy_lock;

	struct mutex xfrm_cfg_mutex;



	/* flow cache part */

	struct flow_cache	flow_cache_global;

	atomic_t		flow_cache_genid;

	struct list_head	flow_cache_gc_list;

	atomic_t		flow_cache_gc_count;

	spinlock_t		flow_cache_gc_lock;

	struct work_struct	flow_cache_gc_work;

	struct work_struct	flow_cache_flush_work;

	struct mutex		flow_flush_sem;

};



#endif

include/net/xfrm.h

+0 −8
Original line number Diff line number Diff line
@@ -563,7 +563,6 @@ struct xfrm_policy { 
	refcount_t		refcnt;

	struct timer_list	timer;



	struct flow_cache_object flo;

	atomic_t		genid;

	u32			priority;

	u32			index;
@@ -978,7 +977,6 @@ struct xfrm_dst { 
		struct rt6_info		rt6;

	} u;

	struct dst_entry *route;

	struct flow_cache_object flo;

	struct xfrm_policy *pols[XFRM_POLICY_TYPE_MAX];

	int num_pols, num_xfrms;

	u32 xfrm_genid;
@@ -1226,9 +1224,6 @@ static inline void xfrm_sk_free_policy(struct sock *sk) 
	}

}



void xfrm_garbage_collect(struct net *net);

void xfrm_garbage_collect_deferred(struct net *net);



#else



static inline void xfrm_sk_free_policy(struct sock *sk) {}
@@ -1263,9 +1258,6 @@ static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir, 
{

	return 1;

}

static inline void xfrm_garbage_collect(struct net *net)

{

}

#endif



static __inline__

net/core/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -11,7 +11,6 @@ obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \ 
			neighbour.o rtnetlink.o utils.o link_watch.o filter.o \

			sock_diag.o dev_ioctl.o tso.o sock_reuseport.o



obj-$(CONFIG_XFRM) += flow.o

obj-y += net-sysfs.o

obj-$(CONFIG_PROC_FS) += net-procfs.o

obj-$(CONFIG_NET_PKTGEN) += pktgen.o