[BLOCK] cfq-iosched: seek and async performance fixes

[~andy/linux] / include / linux / tcp.h

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index da38eea1994b7ad5ea6f29bcd814dea180c7a9dd..542d39596bd86f0c7cdc84b58977b4da440590a2 100644 (file)
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -238,10 +238,9 @@ struct tcp_sock {
        __u32   snd_wl1;        /* Sequence for window update           */
        __u32   snd_wnd;        /* The window we expect to receive      */
        __u32   max_window;     /* Maximal window ever seen from peer   */
-       __u32   pmtu_cookie;    /* Last pmtu seen by socket             */
        __u32   mss_cache;      /* Cached effective mss, not including SACKS */
        __u16   xmit_size_goal; /* Goal for segmenting output packets   */
-       __u16   ext_header_len; /* Network protocol overhead (IP/IPv6 options) */
+       /* XXX Two bytes hole, try to pack */
 
        __u32   window_clamp;   /* Maximal window to advertise          */
        __u32   rcv_ssthresh;   /* Current window clamp                 */
@@ -344,6 +343,12 @@ struct tcp_sock {
                __u32   seq;
                __u32   time;
        } rcvq_space;
+
+/* TCP-specific MTU probe information. */
+       struct {
+               __u32             probe_seq_start;
+               __u32             probe_seq_end;
+       } mtu_probe;
 };
 
 static inline struct tcp_sock *tcp_sk(const struct sock *sk)