tcp: keep snd sack block free list

[vpp.git] / src / vnet / tcp / tcp.h

diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index bd0fa9a..65182c4 100644 (file)
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Copyright (c) 2016-2019 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
@@ -74,7 +74,8 @@ format_function_t format_tcp_rcv_sacks;
   _(KEEP, "KEEP")                       \
   _(WAITCLOSE, "WAIT CLOSE")            \
   _(RETRANSMIT_SYN, "RETRANSMIT SYN")   \
-  _(ESTABLISH, "ESTABLISH")
+  _(ESTABLISH, "ESTABLISH")            \
+  _(ESTABLISH_AO, "ESTABLISH_AO")      \
 
 typedef enum _tcp_timers
 {
@@ -302,6 +303,8 @@ typedef struct _tcp_connection
   tcp_options_t rcv_opts;      /**< Rx options for connection */
 
   sack_block_t *snd_sacks;     /**< Vector of SACKs to send. XXX Fixed size? */
+  u8 snd_sack_pos;             /**< Position in vec of first block to send */
+  sack_block_t *snd_sacks_fl;  /**< Vector for building new list */
   sack_scoreboard_t sack_sb;   /**< SACK "scoreboard" that tracks holes */
 
   u16 rcv_dupacks;     /**< Number of DUPACKs received */
@@ -436,6 +439,12 @@ typedef struct tcp_worker_ctx_
 
 } tcp_worker_ctx_t;
 
+typedef struct tcp_iss_seed_
+{
+  u64 first;
+  u64 second;
+} tcp_iss_seed_t;
+
 typedef struct _tcp_main
 {
   /* Per-worker thread tcp connection pools */
@@ -463,6 +472,9 @@ typedef struct _tcp_main
   /** vlib buffer size */
   u32 bytes_per_buffer;
 
+  /* Seed used to generate random iss */
+  tcp_iss_seed_t iss_seed;
+
   /*
    * Configuration
    */
@@ -602,11 +614,10 @@ tcp_half_open_connection_get (u32 conn_index)
   return tc;
 }
 
-void tcp_make_ack (tcp_connection_t * ts, vlib_buffer_t * b);
 void tcp_make_fin (tcp_connection_t * tc, vlib_buffer_t * b);
 void tcp_make_synack (tcp_connection_t * ts, vlib_buffer_t * b);
 void tcp_send_reset_w_pkt (tcp_connection_t * tc, vlib_buffer_t * pkt,
-                          u8 is_ip4);
+                          u32 thread_index, u8 is_ip4);
 void tcp_send_reset (tcp_connection_t * tc);
 void tcp_send_syn (tcp_connection_t * tc);
 void tcp_send_synack (tcp_connection_t * tc);