OS-4018 lxbrand support TCP SO_REUSEPORT
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Cody Mello <cody.mello@joyent.com>
OS-3752 Increase IOV_MAX to at least 1024
OS-2952 lx brand needs to support or emulate rtnetlink(7)
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>

*** 20,29 ****
--- 20,30 ----
   */
  /*
   * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   *
   * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright 2015, Joyent, Inc. All rights reserved.
   */
  
  /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  /*        All Rights Reserved   */
  
*** 37,46 ****
--- 38,50 ----
   * contributors.
   */
  
  /* Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved. */
  
+ /*
+  * Copyright (c) 2014, Joyent, Inc. All rights reserved.
+  */
  #ifndef _SYS_SOCKET_H
  #define _SYS_SOCKET_H
  
  #include <sys/types.h>
  #include <sys/uio.h>
*** 192,201 ****
--- 196,206 ----
  
  #ifdef  _KERNEL
  #define SO_SRCADDR      0x2001          /* Internal: AF_UNIX source address */
  #define SO_FILEP        0x2002          /* Internal: AF_UNIX file pointer */
  #define SO_UNIX_CLOSE   0x2003          /* Internal: AF_UNIX peer closed */
+ #define SO_REUSEPORT    0x2004          /* allow simultaneous port reuse */
  #endif  /* _KERNEL */
  
  /*
   * Socket filter options
   */
*** 291,302 ****
  #define AF_NCA          28              /* NCA socket */
  #define AF_POLICY       29              /* Security Policy DB socket */
  #define AF_INET_OFFLOAD 30              /* Sun private; do not use */
  #define AF_TRILL        31              /* TRILL interface */
  #define AF_PACKET       32              /* PF_PACKET Linux socket interface */
  
! #define AF_MAX          32
  
  /*
   * Protocol families, same as address families for now.
   */
  #define PF_UNSPEC       AF_UNSPEC
--- 296,308 ----
  #define AF_NCA          28              /* NCA socket */
  #define AF_POLICY       29              /* Security Policy DB socket */
  #define AF_INET_OFFLOAD 30              /* Sun private; do not use */
  #define AF_TRILL        31              /* TRILL interface */
  #define AF_PACKET       32              /* PF_PACKET Linux socket interface */
+ #define AF_LX_NETLINK   33              /* Linux-compatible netlink */
  
! #define AF_MAX          33
  
  /*
   * Protocol families, same as address families for now.
   */
  #define PF_UNSPEC       AF_UNSPEC
*** 332,341 ****
--- 338,348 ----
  #define PF_NCA          AF_NCA
  #define PF_POLICY       AF_POLICY
  #define PF_INET_OFFLOAD AF_INET_OFFLOAD /* Sun private; do not use */
  #define PF_TRILL        AF_TRILL
  #define PF_PACKET       AF_PACKET
+ #define PF_LX_NETLINK   AF_LX_NETLINK
  
  #define PF_MAX          AF_MAX
  
  /*
   * Maximum queue length specifiable by listen.
*** 418,427 ****
--- 425,435 ----
  /* End of XPGv2 compliance */
  #define MSG_DONTWAIT    0x80            /* Don't block for this recv */
  #define MSG_NOTIFICATION 0x100          /* Notification, not data */
  #define MSG_XPG4_2      0x8000          /* Private: XPG4.2 flag */
  
+ /* Obsolete but kept for compilation compatability. Use IOV_MAX. */
  #define MSG_MAXIOVLEN   16
  
  #ifdef _KERNEL
  
  /*