zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/include/net/inet_sock.h b/ap/os/linux/linux-3.4.x/include/net/inet_sock.h
new file mode 100644
index 0000000..8cd2e1d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/include/net/inet_sock.h
@@ -0,0 +1,254 @@
+/*
+ * 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.
+ *
+ * Definitions for inet_sock
+ *
+ * Authors: Many, reorganised here by
+ * Arnaldo Carvalho de Melo <acme@mandriva.com>
+ *
+ * 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 _INET_SOCK_H
+#define _INET_SOCK_H
+
+
+#include <linux/kmemcheck.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/jhash.h>
+#include <linux/netdevice.h>
+
+#include <net/flow.h>
+#include <net/sock.h>
+#include <net/request_sock.h>
+#include <net/netns/hash.h>
+
+/** struct ip_options - IP Options
+ *
+ * @faddr - Saved first hop address
+ * @nexthop - Saved nexthop address in LSRR and SSRR
+ * @is_data - Options in __data, rather than skb
+ * @is_strictroute - Strict source route
+ * @srr_is_hit - Packet destination addr was our one
+ * @is_changed - IP checksum more not valid
+ * @rr_needaddr - Need to record addr of outgoing dev
+ * @ts_needtime - Need to record timestamp
+ * @ts_needaddr - Need to record addr of outgoing dev
+ */
+struct ip_options {
+ __be32 faddr;
+ __be32 nexthop;
+ unsigned char optlen;
+ unsigned char srr;
+ unsigned char rr;
+ unsigned char ts;
+ unsigned char is_strictroute:1,
+ srr_is_hit:1,
+ is_changed:1,
+ rr_needaddr:1,
+ ts_needtime:1,
+ ts_needaddr:1;
+ unsigned char router_alert;
+ unsigned char cipso;
+ unsigned char __pad2;
+ unsigned char __data[0];
+};
+
+struct ip_options_rcu {
+ struct rcu_head rcu;
+ struct ip_options opt;
+};
+
+struct ip_options_data {
+ struct ip_options_rcu opt;
+ char data[40];
+};
+
+struct inet_request_sock {
+ struct request_sock req;
+#if IS_ENABLED(CONFIG_IPV6)
+ u16 inet6_rsk_offset;
+#endif
+ __be16 loc_port;
+ __be32 loc_addr;
+ __be32 rmt_addr;
+ __be16 rmt_port;
+ kmemcheck_bitfield_begin(flags);
+ u16 snd_wscale : 4,
+ rcv_wscale : 4,
+ tstamp_ok : 1,
+ sack_ok : 1,
+ wscale_ok : 1,
+ ecn_ok : 1,
+ acked : 1,
+ no_srccheck: 1;
+ kmemcheck_bitfield_end(flags);
+ struct ip_options_rcu *opt;
+};
+
+static inline struct inet_request_sock *inet_rsk(const struct request_sock *sk)
+{
+ return (struct inet_request_sock *)sk;
+}
+
+struct inet_cork {
+ unsigned int flags;
+ __be32 addr;
+ struct ip_options *opt;
+ unsigned int fragsize;
+ struct dst_entry *dst;
+ int length; /* Total length of all frames */
+ struct page *page;
+ u32 off;
+ u8 tx_flags;
+};
+
+struct inet_cork_full {
+ struct inet_cork base;
+ struct flowi fl;
+};
+
+struct ip_mc_socklist;
+struct ipv6_pinfo;
+struct rtable;
+
+/** struct inet_sock - representation of INET sockets
+ *
+ * @sk - ancestor class
+ * @pinet6 - pointer to IPv6 control block
+ * @inet_daddr - Foreign IPv4 addr
+ * @inet_rcv_saddr - Bound local IPv4 addr
+ * @inet_dport - Destination port
+ * @inet_num - Local port
+ * @inet_saddr - Sending source
+ * @uc_ttl - Unicast TTL
+ * @inet_sport - Source port
+ * @inet_id - ID counter for DF pkts
+ * @tos - TOS
+ * @mc_ttl - Multicasting TTL
+ * @is_icsk - is this an inet_connection_sock?
+ * @uc_index - Unicast outgoing device index
+ * @mc_index - Multicast device index
+ * @mc_list - Group array
+ * @cork - info to build ip hdr on each ip frag while socket is corked
+ */
+struct inet_sock {
+ /* sk and pinet6 has to be the first two members of inet_sock */
+ struct sock sk;
+#if IS_ENABLED(CONFIG_IPV6)
+ struct ipv6_pinfo *pinet6;
+#endif
+ /* Socket demultiplex comparisons on incoming packets. */
+#define inet_daddr sk.__sk_common.skc_daddr
+#define inet_rcv_saddr sk.__sk_common.skc_rcv_saddr
+
+ __be16 inet_dport;
+ __u16 inet_num;
+ __be32 inet_saddr;
+ __s16 uc_ttl;
+ __u16 cmsg_flags;
+ __be16 inet_sport;
+ __u16 inet_id;
+
+ struct ip_options_rcu __rcu *inet_opt;
+ __u8 tos;
+ __u8 min_ttl;
+ __u8 mc_ttl;
+ __u8 pmtudisc;
+ __u8 recverr:1,
+ is_icsk:1,
+ freebind:1,
+ hdrincl:1,
+ mc_loop:1,
+ transparent:1,
+ mc_all:1,
+ nodefrag:1;
+ __u8 rcv_tos;
+ int uc_index;
+ int mc_index;
+ __be32 mc_addr;
+ struct ip_mc_socklist __rcu *mc_list;
+ struct inet_cork_full cork;
+};
+
+#define IPCORK_OPT 1 /* ip-options has been held in ipcork.opt */
+#define IPCORK_ALLFRAG 2 /* always fragment (for ipv6 for now) */
+
+static inline struct inet_sock *inet_sk(const struct sock *sk)
+{
+ return (struct inet_sock *)sk;
+}
+
+static inline void __inet_sk_copy_descendant(struct sock *sk_to,
+ const struct sock *sk_from,
+ const int ancestor_size)
+{
+ memcpy(inet_sk(sk_to) + 1, inet_sk(sk_from) + 1,
+ sk_from->sk_prot->obj_size - ancestor_size);
+}
+#if !(IS_ENABLED(CONFIG_IPV6))
+static inline void inet_sk_copy_descendant(struct sock *sk_to,
+ const struct sock *sk_from)
+{
+ __inet_sk_copy_descendant(sk_to, sk_from, sizeof(struct inet_sock));
+}
+#endif
+
+extern int inet_sk_rebuild_header(struct sock *sk);
+
+extern u32 inet_ehash_secret;
+extern u32 ipv6_hash_secret;
+extern void build_ehash_secret(void);
+
+static inline unsigned int inet_ehashfn(struct net *net,
+ const __be32 laddr, const __u16 lport,
+ const __be32 faddr, const __be16 fport)
+{
+ return jhash_3words((__force __u32) laddr,
+ (__force __u32) faddr,
+ ((__u32) lport) << 16 | (__force __u32)fport,
+ inet_ehash_secret + net_hash_mix(net));
+}
+
+static inline int inet_sk_ehashfn(const struct sock *sk)
+{
+ const struct inet_sock *inet = inet_sk(sk);
+ const __be32 laddr = inet->inet_rcv_saddr;
+ const __u16 lport = inet->inet_num;
+ const __be32 faddr = inet->inet_daddr;
+ const __be16 fport = inet->inet_dport;
+ struct net *net = sock_net(sk);
+
+ return inet_ehashfn(net, laddr, lport, faddr, fport);
+}
+
+static inline struct request_sock *inet_reqsk_alloc(struct request_sock_ops *ops)
+{
+ struct request_sock *req = reqsk_alloc(ops);
+ struct inet_request_sock *ireq = inet_rsk(req);
+
+ if (req != NULL) {
+ kmemcheck_annotate_bitfield(ireq, flags);
+ ireq->opt = NULL;
+ }
+
+ return req;
+}
+
+static inline __u8 inet_sk_flowi_flags(const struct sock *sk)
+{
+ __u8 flags = 0;
+
+ if (inet_sk(sk)->transparent || inet_sk(sk)->hdrincl)
+ flags |= FLOWI_FLAG_ANYSRC;
+ if (sk->sk_protocol == IPPROTO_TCP)
+ flags |= FLOWI_FLAG_PRECOW_METRICS;
+ return flags;
+}
+
+#endif /* _INET_SOCK_H */