From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 60515 invoked by alias); 24 Aug 2018 13:11:26 -0000 Mailing-List: contact newlib-cvs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: newlib-cvs-owner@sourceware.org Received: (qmail 59088 invoked by uid 10080); 24 Aug 2018 13:11:25 -0000 Date: Fri, 24 Aug 2018 13:11:00 -0000 Message-ID: <20180824131125.59075.qmail@sourceware.org> Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Sebastian Huber To: newlib-cvs@sourceware.org Subject: [newlib-cygwin] Load balance sockets with new SO_REUSEPORT_LB option X-Act-Checkin: newlib-cygwin X-Git-Author: sbruno X-Git-Refname: refs/heads/master X-Git-Oldrev: 341e131f7fec9f5c1f17745bfe3c324029034348 X-Git-Newrev: 5c636abe894466a82146994df467e6a7e8c16942 X-SW-Source: 2018-q3/txt/msg00083.txt.bz2 https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=5c636abe894466a82146994df467e6a7e8c16942 commit 5c636abe894466a82146994df467e6a7e8c16942 Author: sbruno Date: Mon Apr 23 19:51:00 2018 +0000 Load balance sockets with new SO_REUSEPORT_LB option This patch adds a new socket option, SO_REUSEPORT_LB, which allow multiple programs or threads to bind to the same port and incoming connections will be load balanced using a hash function. Most of the code was copied from a similar patch for DragonflyBSD. However, in DragonflyBSD, load balancing is a global on/off setting and can not be set per socket. This patch allows for simultaneous use of both the current SO_REUSEPORT and the new SO_REUSEPORT_LB options on the same system. Required changes to structures Globally change so_options from 16 to 32 bit value to allow for more options. Add hashtable in pcbinfo to hold all SO_REUSEPORT_LB sockets. Limitations As DragonflyBSD, a load balance group is limited to 256 pcbs (256 programs or threads sharing the same socket). Submitted by: Johannes Lundberg Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D11003 Diff: --- newlib/libc/sys/rtems/include/sys/socket.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/newlib/libc/sys/rtems/include/sys/socket.h b/newlib/libc/sys/rtems/include/sys/socket.h index 345eaa8..19062c5 100644 --- a/newlib/libc/sys/rtems/include/sys/socket.h +++ b/newlib/libc/sys/rtems/include/sys/socket.h @@ -147,6 +147,9 @@ typedef __uintptr_t uintptr_t; #define SO_NO_OFFLOAD 0x4000 /* socket cannot be offloaded */ #define SO_NO_DDP 0x8000 /* disable direct data placement */ +// XXX: so_options was only 16 bit, now globally increased to 32 bit +#define SO_REUSEPORT_LB 0x00010000 /* reuse with load balancing */ + /* * Additional options, not kept in so_options. */