[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/include/net/inetpeer.h b/ap/os/linux/linux-3.4.x/include/net/inetpeer.h
new file mode 100644
index 0000000..168d30d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/include/net/inetpeer.h
@@ -0,0 +1,112 @@
+/*
+ * INETPEER - A storage for permanent information about peers
+ *
+ * Authors: Andrey V. Savochkin <saw@msu.ru>
+ */
+
+#ifndef _NET_INETPEER_H
+#define _NET_INETPEER_H
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/spinlock.h>
+#include <linux/rtnetlink.h>
+#include <net/ipv6.h>
+#include <linux/atomic.h>
+
+struct inetpeer_addr_base {
+ union {
+ __be32 a4;
+ __be32 a6[4];
+ };
+};
+
+struct inetpeer_addr {
+ struct inetpeer_addr_base addr;
+ __u16 family;
+};
+
+struct inet_peer {
+ /* group together avl_left,avl_right,v4daddr to speedup lookups */
+ struct inet_peer __rcu *avl_left, *avl_right;
+ struct inetpeer_addr daddr;
+ __u32 avl_height;
+
+ u32 metrics[RTAX_MAX];
+ u32 rate_tokens; /* rate limiting for ICMP */
+ unsigned long rate_last;
+ unsigned long pmtu_expires;
+ u32 pmtu_orig;
+ u32 pmtu_learned;
+ struct inetpeer_addr_base redirect_learned;
+ union {
+ struct list_head gc_list;
+ struct rcu_head gc_rcu;
+ };
+ /*
+ * Once inet_peer is queued for deletion (refcnt == -1), following fields
+ * are not available: rid, tcp_ts, tcp_ts_stamp
+ * We can share memory with rcu_head to help keep inet_peer small.
+ */
+ union {
+ struct {
+ atomic_t rid; /* Frag reception counter */
+ __u32 tcp_ts;
+ __u32 tcp_ts_stamp;
+ };
+ struct rcu_head rcu;
+ struct inet_peer *gc_next;
+ };
+
+ /* following fields might be frequently dirtied */
+ __u32 dtime; /* the time of last use of not referenced entries */
+ atomic_t refcnt;
+};
+
+void inet_initpeers(void) __init;
+
+#define INETPEER_METRICS_NEW (~(u32) 0)
+
+static inline bool inet_metrics_new(const struct inet_peer *p)
+{
+ return p->metrics[RTAX_LOCK-1] == INETPEER_METRICS_NEW;
+}
+
+/* can be called with or without local BH being disabled */
+struct inet_peer *inet_getpeer(const struct inetpeer_addr *daddr, int create);
+
+static inline struct inet_peer *inet_getpeer_v4(__be32 v4daddr, int create)
+{
+ struct inetpeer_addr daddr;
+
+ daddr.addr.a4 = v4daddr;
+ daddr.family = AF_INET;
+ return inet_getpeer(&daddr, create);
+}
+
+static inline struct inet_peer *inet_getpeer_v6(const struct in6_addr *v6daddr, int create)
+{
+ struct inetpeer_addr daddr;
+
+ *(struct in6_addr *)daddr.addr.a6 = *v6daddr;
+ daddr.family = AF_INET6;
+ return inet_getpeer(&daddr, create);
+}
+
+/* can be called from BH context or outside */
+extern void inet_putpeer(struct inet_peer *p);
+extern bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout);
+
+extern void inetpeer_invalidate_tree(int family);
+
+/*
+ * temporary check to make sure we dont access rid, tcp_ts,
+ * tcp_ts_stamp if no refcount is taken on inet_peer
+ */
+static inline void inet_peer_refcheck(const struct inet_peer *p)
+{
+ WARN_ON_ONCE(atomic_read(&p->refcnt) <= 0);
+}
+
+#endif /* _NET_INETPEER_H */