5295 remove maxburst logic from TCP's send algorithm Reviewed by: Dan McDonald <danmcd@omniti.com>

*** 21,30 ****
--- 21,31 ----
  
  /*
   * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2011 Nexenta Systems, Inc. All rights reserved.
   * Copyright 2011 Joyent, Inc.  All rights reserved.
+  * Copyright (c) 2014 by Delphix. All rights reserved.
   */
  
  #include <sys/types.h>
  #include <sys/strlog.h>
  #include <sys/strsun.h>
*** 1064,1078 ****
              B_TRUE);
  
          /*
           * When slow start after retransmission begins, start with
           * this seq no.  tcp_rexmit_max marks the end of special slow
!          * start phase.  tcp_snd_burst controls how many segments
!          * can be sent because of an ack.
           */
          tcp->tcp_rexmit_nxt = tcp->tcp_suna;
-         tcp->tcp_snd_burst = TCP_CWND_SS;
          if ((tcp->tcp_valid_bits & TCP_FSS_VALID) &&
              (tcp->tcp_unsent == 0)) {
                  tcp->tcp_rexmit_max = tcp->tcp_fss;
          } else {
                  tcp->tcp_rexmit_max = tcp->tcp_snxt;
--- 1065,1077 ----
              B_TRUE);
  
          /*
           * When slow start after retransmission begins, start with
           * this seq no.  tcp_rexmit_max marks the end of special slow
!          * start phase.
           */
          tcp->tcp_rexmit_nxt = tcp->tcp_suna;
          if ((tcp->tcp_valid_bits & TCP_FSS_VALID) &&
              (tcp->tcp_unsent == 0)) {
                  tcp->tcp_rexmit_max = tcp->tcp_fss;
          } else {
                  tcp->tcp_rexmit_max = tcp->tcp_snxt;