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-rw-r--r--ANDROID_3.4.5/include/net/dst.h473
1 files changed, 0 insertions, 473 deletions
diff --git a/ANDROID_3.4.5/include/net/dst.h b/ANDROID_3.4.5/include/net/dst.h
deleted file mode 100644
index 8197eadc..00000000
--- a/ANDROID_3.4.5/include/net/dst.h
+++ /dev/null
@@ -1,473 +0,0 @@
-/*
- * net/dst.h Protocol independent destination cache definitions.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
- *
- */
-
-#ifndef _NET_DST_H
-#define _NET_DST_H
-
-#include <net/dst_ops.h>
-#include <linux/netdevice.h>
-#include <linux/rtnetlink.h>
-#include <linux/rcupdate.h>
-#include <linux/bug.h>
-#include <linux/jiffies.h>
-#include <net/neighbour.h>
-#include <asm/processor.h>
-
-#define DST_GC_MIN (HZ/10)
-#define DST_GC_INC (HZ/2)
-#define DST_GC_MAX (120*HZ)
-
-/* Each dst_entry has reference count and sits in some parent list(s).
- * When it is removed from parent list, it is "freed" (dst_free).
- * After this it enters dead state (dst->obsolete > 0) and if its refcnt
- * is zero, it can be destroyed immediately, otherwise it is added
- * to gc list and garbage collector periodically checks the refcnt.
- */
-
-struct sk_buff;
-
-struct dst_entry {
- struct rcu_head rcu_head;
- struct dst_entry *child;
- struct net_device *dev;
- struct dst_ops *ops;
- unsigned long _metrics;
- union {
- unsigned long expires;
- /* point to where the dst_entry copied from */
- struct dst_entry *from;
- };
- struct dst_entry *path;
- struct neighbour __rcu *_neighbour;
-#ifdef CONFIG_XFRM
- struct xfrm_state *xfrm;
-#else
- void *__pad1;
-#endif
- int (*input)(struct sk_buff*);
- int (*output)(struct sk_buff*);
-
- int flags;
-#define DST_HOST 0x0001
-#define DST_NOXFRM 0x0002
-#define DST_NOPOLICY 0x0004
-#define DST_NOHASH 0x0008
-#define DST_NOCACHE 0x0010
-#define DST_NOCOUNT 0x0020
-#define DST_NOPEER 0x0040
-#define DST_FAKE_RTABLE 0x0080
-#define DST_XFRM_TUNNEL 0x0100
-
- short error;
- short obsolete;
- unsigned short header_len; /* more space at head required */
- unsigned short trailer_len; /* space to reserve at tail */
-#ifdef CONFIG_IP_ROUTE_CLASSID
- __u32 tclassid;
-#else
- __u32 __pad2;
-#endif
-
- /*
- * Align __refcnt to a 64 bytes alignment
- * (L1_CACHE_SIZE would be too much)
- */
-#ifdef CONFIG_64BIT
- long __pad_to_align_refcnt[2];
-#endif
- /*
- * __refcnt wants to be on a different cache line from
- * input/output/ops or performance tanks badly
- */
- atomic_t __refcnt; /* client references */
- int __use;
- unsigned long lastuse;
- union {
- struct dst_entry *next;
- struct rtable __rcu *rt_next;
- struct rt6_info *rt6_next;
- struct dn_route __rcu *dn_next;
- };
-};
-
-static inline struct neighbour *dst_get_neighbour_noref(struct dst_entry *dst)
-{
- return rcu_dereference(dst->_neighbour);
-}
-
-static inline struct neighbour *dst_get_neighbour_noref_raw(struct dst_entry *dst)
-{
- return rcu_dereference_raw(dst->_neighbour);
-}
-
-static inline void dst_set_neighbour(struct dst_entry *dst, struct neighbour *neigh)
-{
- rcu_assign_pointer(dst->_neighbour, neigh);
-}
-
-extern u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old);
-extern const u32 dst_default_metrics[RTAX_MAX];
-
-#define DST_METRICS_READ_ONLY 0x1UL
-#define __DST_METRICS_PTR(Y) \
- ((u32 *)((Y) & ~DST_METRICS_READ_ONLY))
-#define DST_METRICS_PTR(X) __DST_METRICS_PTR((X)->_metrics)
-
-static inline bool dst_metrics_read_only(const struct dst_entry *dst)
-{
- return dst->_metrics & DST_METRICS_READ_ONLY;
-}
-
-extern void __dst_destroy_metrics_generic(struct dst_entry *dst, unsigned long old);
-
-static inline void dst_destroy_metrics_generic(struct dst_entry *dst)
-{
- unsigned long val = dst->_metrics;
- if (!(val & DST_METRICS_READ_ONLY))
- __dst_destroy_metrics_generic(dst, val);
-}
-
-static inline u32 *dst_metrics_write_ptr(struct dst_entry *dst)
-{
- unsigned long p = dst->_metrics;
-
- BUG_ON(!p);
-
- if (p & DST_METRICS_READ_ONLY)
- return dst->ops->cow_metrics(dst, p);
- return __DST_METRICS_PTR(p);
-}
-
-/* This may only be invoked before the entry has reached global
- * visibility.
- */
-static inline void dst_init_metrics(struct dst_entry *dst,
- const u32 *src_metrics,
- bool read_only)
-{
- dst->_metrics = ((unsigned long) src_metrics) |
- (read_only ? DST_METRICS_READ_ONLY : 0);
-}
-
-static inline void dst_copy_metrics(struct dst_entry *dest, const struct dst_entry *src)
-{
- u32 *dst_metrics = dst_metrics_write_ptr(dest);
-
- if (dst_metrics) {
- u32 *src_metrics = DST_METRICS_PTR(src);
-
- memcpy(dst_metrics, src_metrics, RTAX_MAX * sizeof(u32));
- }
-}
-
-static inline u32 *dst_metrics_ptr(struct dst_entry *dst)
-{
- return DST_METRICS_PTR(dst);
-}
-
-static inline u32
-dst_metric_raw(const struct dst_entry *dst, const int metric)
-{
- u32 *p = DST_METRICS_PTR(dst);
-
- return p[metric-1];
-}
-
-static inline u32
-dst_metric(const struct dst_entry *dst, const int metric)
-{
- WARN_ON_ONCE(metric == RTAX_HOPLIMIT ||
- metric == RTAX_ADVMSS ||
- metric == RTAX_MTU);
- return dst_metric_raw(dst, metric);
-}
-
-static inline u32
-dst_metric_advmss(const struct dst_entry *dst)
-{
- u32 advmss = dst_metric_raw(dst, RTAX_ADVMSS);
-
- if (!advmss)
- advmss = dst->ops->default_advmss(dst);
-
- return advmss;
-}
-
-static inline void dst_metric_set(struct dst_entry *dst, int metric, u32 val)
-{
- u32 *p = dst_metrics_write_ptr(dst);
-
- if (p)
- p[metric-1] = val;
-}
-
-static inline u32
-dst_feature(const struct dst_entry *dst, u32 feature)
-{
- return dst_metric(dst, RTAX_FEATURES) & feature;
-}
-
-static inline u32 dst_mtu(const struct dst_entry *dst)
-{
- return dst->ops->mtu(dst);
-}
-
-/* RTT metrics are stored in milliseconds for user ABI, but used as jiffies */
-static inline unsigned long dst_metric_rtt(const struct dst_entry *dst, int metric)
-{
- return msecs_to_jiffies(dst_metric(dst, metric));
-}
-
-static inline void set_dst_metric_rtt(struct dst_entry *dst, int metric,
- unsigned long rtt)
-{
- dst_metric_set(dst, metric, jiffies_to_msecs(rtt));
-}
-
-static inline u32
-dst_allfrag(const struct dst_entry *dst)
-{
- int ret = dst_feature(dst, RTAX_FEATURE_ALLFRAG);
- return ret;
-}
-
-static inline int
-dst_metric_locked(const struct dst_entry *dst, int metric)
-{
- return dst_metric(dst, RTAX_LOCK) & (1<<metric);
-}
-
-static inline void dst_hold(struct dst_entry * dst)
-{
- /*
- * If your kernel compilation stops here, please check
- * __pad_to_align_refcnt declaration in struct dst_entry
- */
- BUILD_BUG_ON(offsetof(struct dst_entry, __refcnt) & 63);
- atomic_inc(&dst->__refcnt);
-}
-
-static inline void dst_use(struct dst_entry *dst, unsigned long time)
-{
- dst_hold(dst);
- dst->__use++;
- dst->lastuse = time;
-}
-
-static inline void dst_use_noref(struct dst_entry *dst, unsigned long time)
-{
- dst->__use++;
- dst->lastuse = time;
-}
-
-static inline
-struct dst_entry * dst_clone(struct dst_entry * dst)
-{
- if (dst)
- atomic_inc(&dst->__refcnt);
- return dst;
-}
-
-extern void dst_release(struct dst_entry *dst);
-
-static inline void refdst_drop(unsigned long refdst)
-{
- if (!(refdst & SKB_DST_NOREF))
- dst_release((struct dst_entry *)(refdst & SKB_DST_PTRMASK));
-}
-
-/**
- * skb_dst_drop - drops skb dst
- * @skb: buffer
- *
- * Drops dst reference count if a reference was taken.
- */
-static inline void skb_dst_drop(struct sk_buff *skb)
-{
- if (skb->_skb_refdst) {
- refdst_drop(skb->_skb_refdst);
- skb->_skb_refdst = 0UL;
- }
-}
-
-static inline void skb_dst_copy(struct sk_buff *nskb, const struct sk_buff *oskb)
-{
- nskb->_skb_refdst = oskb->_skb_refdst;
- if (!(nskb->_skb_refdst & SKB_DST_NOREF))
- dst_clone(skb_dst(nskb));
-}
-
-/**
- * skb_dst_force - makes sure skb dst is refcounted
- * @skb: buffer
- *
- * If dst is not yet refcounted, let's do it
- */
-static inline void skb_dst_force(struct sk_buff *skb)
-{
- if (skb_dst_is_noref(skb)) {
- WARN_ON(!rcu_read_lock_held());
- skb->_skb_refdst &= ~SKB_DST_NOREF;
- dst_clone(skb_dst(skb));
- }
-}
-
-
-/**
- * __skb_tunnel_rx - prepare skb for rx reinsert
- * @skb: buffer
- * @dev: tunnel device
- *
- * After decapsulation, packet is going to re-enter (netif_rx()) our stack,
- * so make some cleanups. (no accounting done)
- */
-static inline void __skb_tunnel_rx(struct sk_buff *skb, struct net_device *dev)
-{
- skb->dev = dev;
-
- /*
- * Clear rxhash so that we can recalulate the hash for the
- * encapsulated packet, unless we have already determine the hash
- * over the L4 4-tuple.
- */
- if (!skb->l4_rxhash)
- skb->rxhash = 0;
- skb_set_queue_mapping(skb, 0);
- skb_dst_drop(skb);
- nf_reset(skb);
-}
-
-/**
- * skb_tunnel_rx - prepare skb for rx reinsert
- * @skb: buffer
- * @dev: tunnel device
- *
- * After decapsulation, packet is going to re-enter (netif_rx()) our stack,
- * so make some cleanups, and perform accounting.
- * Note: this accounting is not SMP safe.
- */
-static inline void skb_tunnel_rx(struct sk_buff *skb, struct net_device *dev)
-{
- /* TODO : stats should be SMP safe */
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += skb->len;
- __skb_tunnel_rx(skb, dev);
-}
-
-/* Children define the path of the packet through the
- * Linux networking. Thus, destinations are stackable.
- */
-
-static inline struct dst_entry *skb_dst_pop(struct sk_buff *skb)
-{
- struct dst_entry *child = dst_clone(skb_dst(skb)->child);
-
- skb_dst_drop(skb);
- return child;
-}
-
-extern int dst_discard(struct sk_buff *skb);
-extern void *dst_alloc(struct dst_ops * ops, struct net_device *dev,
- int initial_ref, int initial_obsolete, int flags);
-extern void __dst_free(struct dst_entry * dst);
-extern struct dst_entry *dst_destroy(struct dst_entry * dst);
-
-static inline void dst_free(struct dst_entry * dst)
-{
- if (dst->obsolete > 1)
- return;
- if (!atomic_read(&dst->__refcnt)) {
- dst = dst_destroy(dst);
- if (!dst)
- return;
- }
- __dst_free(dst);
-}
-
-static inline void dst_rcu_free(struct rcu_head *head)
-{
- struct dst_entry *dst = container_of(head, struct dst_entry, rcu_head);
- dst_free(dst);
-}
-
-static inline void dst_confirm(struct dst_entry *dst)
-{
- if (dst) {
- struct neighbour *n;
-
- rcu_read_lock();
- n = dst_get_neighbour_noref(dst);
- neigh_confirm(n);
- rcu_read_unlock();
- }
-}
-
-static inline struct neighbour *dst_neigh_lookup(const struct dst_entry *dst, const void *daddr)
-{
- return dst->ops->neigh_lookup(dst, daddr);
-}
-
-static inline void dst_link_failure(struct sk_buff *skb)
-{
- struct dst_entry *dst = skb_dst(skb);
- if (dst && dst->ops && dst->ops->link_failure)
- dst->ops->link_failure(skb);
-}
-
-static inline void dst_set_expires(struct dst_entry *dst, int timeout)
-{
- unsigned long expires = jiffies + timeout;
-
- if (expires == 0)
- expires = 1;
-
- if (dst->expires == 0 || time_before(expires, dst->expires))
- dst->expires = expires;
-}
-
-/* Output packet to network from transport. */
-static inline int dst_output(struct sk_buff *skb)
-{
- return skb_dst(skb)->output(skb);
-}
-
-/* Input packet from network to transport. */
-static inline int dst_input(struct sk_buff *skb)
-{
- return skb_dst(skb)->input(skb);
-}
-
-static inline struct dst_entry *dst_check(struct dst_entry *dst, u32 cookie)
-{
- if (dst->obsolete)
- dst = dst->ops->check(dst, cookie);
- return dst;
-}
-
-extern void dst_init(void);
-
-/* Flags for xfrm_lookup flags argument. */
-enum {
- XFRM_LOOKUP_ICMP = 1 << 0,
-};
-
-struct flowi;
-#ifndef CONFIG_XFRM
-static inline struct dst_entry *xfrm_lookup(struct net *net,
- struct dst_entry *dst_orig,
- const struct flowi *fl, struct sock *sk,
- int flags)
-{
- return dst_orig;
-}
-#else
-extern struct dst_entry *xfrm_lookup(struct net *net, struct dst_entry *dst_orig,
- const struct flowi *fl, struct sock *sk,
- int flags);
-#endif
-
-#endif /* _NET_DST_H */