8a031a1d1e
module hook, we can share a common set of synchronization structures. This cuts the amount of cacheline_aligned data for these structures by 50%. Note that we still have a per-hook localcount, since we need to count individual references. As discussed with riastradh@ Welcome to 9.99.22 !
249 lines
7.9 KiB
C
249 lines
7.9 KiB
C
/* $NetBSD: kern_uipc_socket_50.c,v 1.4 2019/12/12 02:15:42 pgoyette Exp $ */
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/*
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* Copyright (c) 2002, 2007, 2008, 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of Wasabi Systems, Inc, and by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 2004 The FreeBSD Foundation
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* Copyright (c) 2004 Robert Watson
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* Copyright (c) 1982, 1986, 1988, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)uipc_socket.c 8.6 (Berkeley) 5/2/95
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*/
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: vn.c 1.13 94/04/02$
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*
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* @(#)vn.c 8.9 (Berkeley) 5/14/95
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kern_uipc_socket_50.c,v 1.4 2019/12/12 02:15:42 pgoyette Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_netbsd.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/file.h>
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#include <sys/compat_stub.h>
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#include <sys/socketvar.h>
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#include <compat/sys/time.h>
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#include <compat/sys/socket.h>
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#include <compat/common/compat_mod.h>
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static int
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uipc_socket_50_getopt1(int opt, struct socket *so, struct sockopt *sopt)
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{
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int optval, error;
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struct timeval50 otv;
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switch (opt) {
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case SO_OSNDTIMEO:
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case SO_ORCVTIMEO:
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optval = (opt == SO_OSNDTIMEO ?
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so->so_snd.sb_timeo : so->so_rcv.sb_timeo);
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otv.tv_sec = optval / hz;
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otv.tv_usec = (optval % hz) * tick;
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error = sockopt_set(sopt, &otv, sizeof(otv));
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break;
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case SO_OTIMESTAMP:
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error = sockopt_setint(sopt, (so->so_options & opt) ? 1 : 0);
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break;
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default:
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error = EPASSTHROUGH;
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}
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return error;
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}
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static int
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uipc_socket_50_setopt1(int opt, struct socket *so, const struct sockopt *sopt)
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{
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int optval, error;
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struct timeval50 otv;
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struct timeval tv;
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switch (opt) {
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case SO_OSNDTIMEO:
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case SO_ORCVTIMEO:
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solock(so);
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error = sockopt_get(sopt, &otv, sizeof(otv));
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if (error)
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break;
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timeval50_to_timeval(&otv, &tv);
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/* Code duplicated from sys/kern/uipc_socket.c */
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if (tv.tv_sec < 0 || tv.tv_usec < 0 || tv.tv_usec >= 1000000) {
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error = EDOM;
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break;
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}
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if (tv.tv_sec > (INT_MAX - tv.tv_usec / tick) / hz) {
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error = EDOM;
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break;
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}
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optval = tv.tv_sec * hz + tv.tv_usec / tick;
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if (optval == 0 && tv.tv_usec != 0)
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optval = 1;
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switch (opt) {
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case SO_OSNDTIMEO:
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so->so_snd.sb_timeo = optval;
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break;
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case SO_ORCVTIMEO:
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so->so_rcv.sb_timeo = optval;
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break;
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}
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break;
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case SO_OTIMESTAMP:
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error = sockopt_getint(sopt, &optval);
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solock(so);
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if (error)
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break;
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if (optval)
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so->so_options |= opt;
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else
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so->so_options &= ~opt;
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break;
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default:
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error = EPASSTHROUGH;
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}
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return error;
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}
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static int
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uipc_socket_50_sbts(int opt, struct mbuf ***mp)
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{
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struct timeval50 tv50;
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struct timeval tv;
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microtime(&tv);
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if (opt & SO_OTIMESTAMP) {
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timeval_to_timeval50(&tv, &tv50);
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**mp = sbcreatecontrol(&tv50, sizeof(tv50), SCM_OTIMESTAMP,
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SOL_SOCKET);
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if (**mp)
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*mp = &(**mp)->m_next;
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return 0;
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} else
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return EPASSTHROUGH;
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}
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void
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kern_uipc_socket_50_init(void)
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{
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MODULE_HOOK_SET(uipc_socket_50_setopt1_hook, uipc_socket_50_setopt1);
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MODULE_HOOK_SET(uipc_socket_50_getopt1_hook, uipc_socket_50_getopt1);
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MODULE_HOOK_SET(uipc_socket_50_sbts_hook, uipc_socket_50_sbts);
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}
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void
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kern_uipc_socket_50_fini(void)
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{
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MODULE_HOOK_UNSET(uipc_socket_50_setopt1_hook);
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MODULE_HOOK_UNSET(uipc_socket_50_getopt1_hook);
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MODULE_HOOK_UNSET(uipc_socket_50_sbts_hook);
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}
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