3 files changed, 15 insertions, 1 deletions

diff --git a/include/linux/snmp.h b/include/linux/snmp.h
index e5fcbd079e4a..00bc189cb395 100644
--- a/include/linux/snmp.h
+++ b/include/linux/snmp.h
@@ -238,6 +238,7 @@ enum
         LINUX_MIB_TCPOFOMERGE,                  /* TCPOFOMerge */
         LINUX_MIB_TCPCHALLENGEACK,              /* TCPChallengeACK */
         LINUX_MIB_TCPSYNCHALLENGE,              /* TCPSYNChallenge */
+        LINUX_MIB_TCPFASTOPENACTIVE,            /* TCPFastOpenActive */
         __LINUX_MIB_MAX
 };
 
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 12948f543839..1edf96afab44 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -386,7 +386,8 @@ struct tcp_sock {
                 unused      : 1;
         u8      repair_queue;
         u8      do_early_retrans:1,/* Enable RFC5827 early-retransmit  */
-                early_retrans_delayed:1; /* Delayed ER timer installed */
+                early_retrans_delayed:1, /* Delayed ER timer installed */
+                syn_fastopen:1; /* SYN includes Fast Open option */
 
 /* RTT measurement */
         u32     srtt;           /* smoothed round trip time << 3        */
@@ -500,6 +501,9 @@ struct tcp_sock {
         struct tcp_md5sig_info  __rcu *md5sig_info;
 #endif
 
+/* TCP fastopen related information */
+        struct tcp_fastopen_request *fastopen_req;
+
         /* When the cookie options are generated and exchanged, then this
          * object holds a reference to them (cookie_values->kref).  Also
          * contains related tcp_cookie_transactions fields.
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e601da197361..867557b4244a 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1289,6 +1289,15 @@ extern int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *, const struct sk_buff
 extern int tcp_md5_hash_key(struct tcp_md5sig_pool *hp,
                             const struct tcp_md5sig_key *key);
 
+struct tcp_fastopen_request {
+        /* Fast Open cookie. Size 0 means a cookie request */
+        struct tcp_fastopen_cookie      cookie;
+        struct msghdr                   *data;  /* data in MSG_FASTOPEN */
+        u16                             copied; /* queued in tcp_connect() */
+};
+
+void tcp_free_fastopen_req(struct tcp_sock *tp);
+
 /* write queue abstraction */
 static inline void tcp_write_queue_purge(struct sock *sk)
 {