tcp: TCP Small Queues

[firefly-linux-kernel-4.4.55.git] / include / linux / tcp.h

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 5f359dbfcdce5bbf40b9fe5cada0d59d60981e5f..1888169e07c72bb13a24ed1b3a018bf570ec2cb3 100644 (file)
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -339,6 +339,9 @@ struct tcp_sock {
        u32     rcv_tstamp;     /* timestamp of last received ACK (for keepalives) */
        u32     lsndtime;       /* timestamp of last sent data packet (for restart window) */
 
+       struct list_head tsq_node; /* anchor in tsq_tasklet.head list */
+       unsigned long   tsq_flags;
+
        /* Data for direct copy to user */
        struct {
                struct sk_buff_head     prequeue;
@@ -494,6 +497,12 @@ struct tcp_sock {
        struct tcp_cookie_values  *cookie_values;
 };
 
+enum tsq_flags {
+       TSQ_THROTTLED,
+       TSQ_QUEUED,
+       TSQ_OWNED, /* tcp_tasklet_func() found socket was locked */
+};
+
 static inline struct tcp_sock *tcp_sk(const struct sock *sk)
 {
        return (struct tcp_sock *)sk;
@@ -507,7 +516,7 @@ struct tcp_timewait_sock {
        u32                       tw_ts_recent;
        long                      tw_ts_recent_stamp;
 #ifdef CONFIG_TCP_MD5SIG
-       struct tcp_md5sig_key   *tw_md5_key;
+       struct tcp_md5sig_key     *tw_md5_key;
 #endif
        /* Few sockets in timewait have cookies; in that case, then this
         * object holds a reference to them (tw_cookie_values->kref).