44 #include <sys/cpuvar.h>
  45 #include <sys/clock_impl.h>       /* For LBOLT_FASTPATH{,64} */
  46 #include <inet/optcom.h>
  47 #include <inet/tcp.h>
  48 #include <inet/tunables.h>
  49 
  50 #define TCP_MOD_ID      5105
  51 
  52 extern struct qinit     tcp_sock_winit;
  53 extern struct qinit     tcp_winit;
  54 
  55 extern sock_downcalls_t sock_tcp_downcalls;
  56 
  57 /*
  58  * Note that by default, the _snd_lowat_fraction tunable controls the value of
  59  * the transmit low water mark.  TCP_XMIT_LOWATER (and thus the _xmit_lowat
  60  * property) is only used if the administrator has disabled _snd_lowat_fraction
  61  * by setting it to 0.
  62  */
  63 #define TCP_XMIT_LOWATER        4096
  64 #define TCP_XMIT_HIWATER        128000
  65 #define TCP_RECV_LOWATER        2048
  66 #define TCP_RECV_HIWATER        1048576
  67 
  68 /*
  69  * Bind hash list size and has function.  It has to be a power of 2 for
  70  * hashing.
  71  */
  72 #define TCP_BIND_FANOUT_SIZE    1024
  73 #define TCP_BIND_HASH(lport) (ntohs(lport) & (TCP_BIND_FANOUT_SIZE - 1))
  74 
  75 /*
  76  * This implementation follows the 4.3BSD interpretation of the urgent
  77  * pointer and not RFC 1122. Switching to RFC 1122 behavior would cause
  78  * incompatible changes in protocols like telnet and rlogin.
  79  */
  80 #define TCP_OLD_URP_INTERPRETATION      1
  81 
  82 /* TCP option length */
  83 #define TCPOPT_NOP_LEN          1
  84 #define TCPOPT_MAXSEG_LEN       4
  85 #define TCPOPT_WS_LEN           3
  86 #define TCPOPT_REAL_WS_LEN      (TCPOPT_WS_LEN+1)

  44 #include <sys/cpuvar.h>
  45 #include <sys/clock_impl.h>       /* For LBOLT_FASTPATH{,64} */
  46 #include <inet/optcom.h>
  47 #include <inet/tcp.h>
  48 #include <inet/tunables.h>
  49 
  50 #define TCP_MOD_ID      5105
  51 
  52 extern struct qinit     tcp_sock_winit;
  53 extern struct qinit     tcp_winit;
  54 
  55 extern sock_downcalls_t sock_tcp_downcalls;
  56 
  57 /*
  58  * Note that by default, the _snd_lowat_fraction tunable controls the value of
  59  * the transmit low water mark.  TCP_XMIT_LOWATER (and thus the _xmit_lowat
  60  * property) is only used if the administrator has disabled _snd_lowat_fraction
  61  * by setting it to 0.
  62  */
  63 #define TCP_XMIT_LOWATER        4096
  64 #define TCP_XMIT_HIWATER        49152
  65 #define TCP_RECV_LOWATER        2048
  66 #define TCP_RECV_HIWATER        128000
  67 
  68 /*
  69  * Bind hash list size and has function.  It has to be a power of 2 for
  70  * hashing.
  71  */
  72 #define TCP_BIND_FANOUT_SIZE    1024
  73 #define TCP_BIND_HASH(lport) (ntohs(lport) & (TCP_BIND_FANOUT_SIZE - 1))
  74 
  75 /*
  76  * This implementation follows the 4.3BSD interpretation of the urgent
  77  * pointer and not RFC 1122. Switching to RFC 1122 behavior would cause
  78  * incompatible changes in protocols like telnet and rlogin.
  79  */
  80 #define TCP_OLD_URP_INTERPRETATION      1
  81 
  82 /* TCP option length */
  83 #define TCPOPT_NOP_LEN          1
  84 #define TCPOPT_MAXSEG_LEN       4
  85 #define TCPOPT_WS_LEN           3
  86 #define TCPOPT_REAL_WS_LEN      (TCPOPT_WS_LEN+1)