[TCP]: MTU probing

[net-next-2.6.git] / include / net / inet_connection_sock.h

diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index fa587c94e9d0483fc774356b933235cddafcb44c..b3abe33f4e5f122ec7e68bc43b94fec50ad4f041 100644 (file)
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -72,6 +72,7 @@ struct inet_connection_sock_af_ops {
  * @icsk_probes_out:      unanswered 0 window probes
  * @icsk_ext_hdr_len:     Network protocol overhead (IP/IPv6 options)
  * @icsk_ack:             Delayed ACK control data
+ * @icsk_mtup;            MTU probing control data
  */
 struct inet_connection_sock {
        /* inet_sock has to be the first member! */
@@ -104,6 +105,18 @@ struct inet_connection_sock {
                __u16             last_seg_size; /* Size of last incoming segment          */
                __u16             rcv_mss;       /* MSS used for delayed ACK decisions     */ 
        } icsk_ack;
+       struct {
+               int               enabled;
+
+               /* Range of MTUs to search */
+               int               search_high;
+               int               search_low;
+
+               /* Information on the current probe. */
+               int               probe_size;
+               __u32             probe_seq_start;
+               __u32             probe_seq_end;
+       } icsk_mtup;
        u32                       icsk_ca_priv[16];
 #define ICSK_CA_PRIV_SIZE      (16 * sizeof(u32))
 };