zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/include/net/inet6_hashtables.h b/ap/os/linux/linux-3.4.x/include/net/inet6_hashtables.h
new file mode 100644
index 0000000..2da45ce
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/include/net/inet6_hashtables.h
@@ -0,0 +1,114 @@
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * Authors: Lotsa people, from code originally in tcp
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _INET6_HASHTABLES_H
+#define _INET6_HASHTABLES_H
+
+
+#if IS_ENABLED(CONFIG_IPV6)
+#include <linux/in6.h>
+#include <linux/ipv6.h>
+#include <linux/types.h>
+#include <linux/jhash.h>
+
+#include <net/inet_sock.h>
+
+#include <net/ipv6.h>
+#include <net/netns/hash.h>
+
+struct inet_hashinfo;
+
+static inline unsigned int inet6_ehashfn(struct net *net,
+ const struct in6_addr *laddr, const u16 lport,
+ const struct in6_addr *faddr, const __be16 fport)
+{
+ u32 ports = (((u32)lport) << 16) | (__force u32)fport;
+
+ return jhash_3words((__force u32)laddr->s6_addr32[3],
+ ipv6_addr_jhash(faddr),
+ ports,
+ inet_ehash_secret + net_hash_mix(net));
+}
+
+static inline int inet6_sk_ehashfn(const struct sock *sk)
+{
+ const struct inet_sock *inet = inet_sk(sk);
+ const struct ipv6_pinfo *np = inet6_sk(sk);
+ const struct in6_addr *laddr = &np->rcv_saddr;
+ const struct in6_addr *faddr = &np->daddr;
+ const __u16 lport = inet->inet_num;
+ const __be16 fport = inet->inet_dport;
+ struct net *net = sock_net(sk);
+
+ return inet6_ehashfn(net, laddr, lport, faddr, fport);
+}
+
+extern int __inet6_hash(struct sock *sk, struct inet_timewait_sock *twp);
+
+/*
+ * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
+ * we need not check it for TCP lookups anymore, thanks Alexey. -DaveM
+ *
+ * The sockhash lock must be held as a reader here.
+ */
+extern struct sock *__inet6_lookup_established(struct net *net,
+ struct inet_hashinfo *hashinfo,
+ const struct in6_addr *saddr,
+ const __be16 sport,
+ const struct in6_addr *daddr,
+ const u16 hnum,
+ const int dif);
+
+extern struct sock *inet6_lookup_listener(struct net *net,
+ struct inet_hashinfo *hashinfo,
+ const struct in6_addr *daddr,
+ const unsigned short hnum,
+ const int dif);
+
+static inline struct sock *__inet6_lookup(struct net *net,
+ struct inet_hashinfo *hashinfo,
+ const struct in6_addr *saddr,
+ const __be16 sport,
+ const struct in6_addr *daddr,
+ const u16 hnum,
+ const int dif)
+{
+ struct sock *sk = __inet6_lookup_established(net, hashinfo, saddr,
+ sport, daddr, hnum, dif);
+ if (sk)
+ return sk;
+
+ return inet6_lookup_listener(net, hashinfo, daddr, hnum, dif);
+}
+
+static inline struct sock *__inet6_lookup_skb(struct inet_hashinfo *hashinfo,
+ struct sk_buff *skb,
+ const __be16 sport,
+ const __be16 dport)
+{
+ struct sock *sk;
+
+ if (unlikely(sk = skb_steal_sock(skb)))
+ return sk;
+ else return __inet6_lookup(dev_net(skb_dst(skb)->dev), hashinfo,
+ &ipv6_hdr(skb)->saddr, sport,
+ &ipv6_hdr(skb)->daddr, ntohs(dport),
+ inet6_iif(skb));
+}
+
+extern struct sock *inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo,
+ const struct in6_addr *saddr, const __be16 sport,
+ const struct in6_addr *daddr, const __be16 dport,
+ const int dif);
+#endif /* IS_ENABLED(CONFIG_IPV6) */
+#endif /* _INET6_HASHTABLES_H */