zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/include/net/ipip.h b/ap/os/linux/linux-3.4.x/include/net/ipip.h
new file mode 100644
index 0000000..e8ee3bb
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/include/net/ipip.h
@@ -0,0 +1,67 @@
+#ifndef __NET_IPIP_H
+#define __NET_IPIP_H 1
+
+#include <linux/if_tunnel.h>
+#include <net/ip.h>
+
+/* Keep error state on tunnel for 30 sec */
+#define IPTUNNEL_ERR_TIMEO (30*HZ)
+
+/* 6rd prefix/relay information */
+struct ip_tunnel_6rd_parm {
+ struct in6_addr prefix;
+ __be32 relay_prefix;
+ u16 prefixlen;
+ u16 relay_prefixlen;
+};
+
+struct ip_tunnel {
+ struct ip_tunnel __rcu *next;
+ struct net_device *dev;
+
+ int err_count; /* Number of arrived ICMP errors */
+ unsigned long err_time; /* Time when the last ICMP error arrived */
+
+ /* These four fields used only by GRE */
+ __u32 i_seqno; /* The last seen seqno */
+ __u32 o_seqno; /* The last output seqno */
+ int hlen; /* Precalculated GRE header length */
+ int mlink;
+
+ struct ip_tunnel_parm parms;
+
+ /* for SIT */
+#ifdef CONFIG_IPV6_SIT_6RD
+ struct ip_tunnel_6rd_parm ip6rd;
+#endif
+ struct ip_tunnel_prl_entry __rcu *prl; /* potential router list */
+ unsigned int prl_count; /* # of entries in PRL */
+};
+
+struct ip_tunnel_prl_entry {
+ struct ip_tunnel_prl_entry __rcu *next;
+ __be32 addr;
+ u16 flags;
+ struct rcu_head rcu_head;
+};
+
+#define __IPTUNNEL_XMIT(stats1, stats2) do { \
+ int err; \
+ int pkt_len = skb->len - skb_transport_offset(skb); \
+ \
+ skb->ip_summed = CHECKSUM_NONE; \
+ ip_select_ident(skb, NULL); \
+ \
+ err = ip_local_out(skb); \
+ if (likely(net_xmit_eval(err) == 0)) { \
+ (stats1)->tx_bytes += pkt_len; \
+ (stats1)->tx_packets++; \
+ } else { \
+ (stats2)->tx_errors++; \
+ (stats2)->tx_aborted_errors++; \
+ } \
+} while (0)
+
+#define IPTUNNEL_XMIT() __IPTUNNEL_XMIT(txq, stats)
+
+#endif