3660 tcp_slow_start_* tunables should allow increasing the initial congestion window
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed by: Brendan Gregg <brendan.gregg@joyent.com>

*** 377,391 ****
              mod_set_uint32, mod_get_uint32,
              {0, 16, 2}, {2} },
  
          { "_slow_start_after_idle", MOD_PROTO_TCP,
              mod_set_uint32, mod_get_uint32,
!             {1, 16384, 4}, {4} },
  
          { "_slow_start_initial", MOD_PROTO_TCP,
              mod_set_uint32, mod_get_uint32,
!             {1, 4, 4}, {4} },
  
          { "sack", MOD_PROTO_TCP,
              mod_set_uint32, mod_get_uint32,
              {0, 2, 2}, {2} },
  
--- 377,391 ----
              mod_set_uint32, mod_get_uint32,
              {0, 16, 2}, {2} },
  
          { "_slow_start_after_idle", MOD_PROTO_TCP,
              mod_set_uint32, mod_get_uint32,
!             {0, 16384, 0}, {0} },
  
          { "_slow_start_initial", MOD_PROTO_TCP,
              mod_set_uint32, mod_get_uint32,
!             {0, 16, 0}, {0} },
  
          { "sack", MOD_PROTO_TCP,
              mod_set_uint32, mod_get_uint32,
              {0, 2, 2}, {2} },