From patchwork Sun Jan 27 12:05:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Samuel Thibault X-Patchwork-Id: 10782857 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 86F1F746 for ; Sun, 27 Jan 2019 12:27:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 766B22932B for ; Sun, 27 Jan 2019 12:27:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6979E29471; Sun, 27 Jan 2019 12:27:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B0BC92932B for ; Sun, 27 Jan 2019 12:27:06 +0000 (UTC) Received: from localhost ([127.0.0.1]:44901 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gnjWj-0001tm-KH for patchwork-qemu-devel@patchwork.kernel.org; Sun, 27 Jan 2019 07:27:05 -0500 Received: from eggs.gnu.org ([209.51.188.92]:52844) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gnjCQ-0001ap-BW for qemu-devel@nongnu.org; Sun, 27 Jan 2019 07:06:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gnjCN-0007gT-3q for qemu-devel@nongnu.org; Sun, 27 Jan 2019 07:06:06 -0500 Received: from hera.aquilenet.fr ([2a0c:e300::1]:43434) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gnjCM-0007Rv-KO for qemu-devel@nongnu.org; Sun, 27 Jan 2019 07:06:02 -0500 Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id 648CA7CE4; Sun, 27 Jan 2019 13:05:45 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LDzURqp5VXks; Sun, 27 Jan 2019 13:05:43 +0100 (CET) Received: from function (lfbn-1-11161-124.w86-213.abo.wanadoo.fr [86.213.235.124]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 87AB67CE8; Sun, 27 Jan 2019 13:05:29 +0100 (CET) Received: from samy by function with local (Exim 4.92-RC4) (envelope-from ) id 1gnjBn-00043N-LS; Sun, 27 Jan 2019 13:05:27 +0100 From: Samuel Thibault To: qemu-devel@nongnu.org Date: Sun, 27 Jan 2019 13:05:17 +0100 Message-Id: <20190127120526.15457-23-samuel.thibault@ens-lyon.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190127120526.15457-1-samuel.thibault@ens-lyon.org> References: <20190127120526.15457-1-samuel.thibault@ens-lyon.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a0c:e300::1 Subject: [Qemu-devel] [PULL 22/31] slirp: replace qemu qtailq with slirp own copy X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Samuel Thibault , stefanha@redhat.com, jan.kiszka@siemens.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Marc-André Lureau Signed-off-by: Marc-André Lureau Signed-off-by: Samuel Thibault --- slirp/qtailq.h | 193 +++++++++++++++++++++++++++++++++++++++++++++++++ slirp/slirp.h | 3 +- 2 files changed, 194 insertions(+), 2 deletions(-) create mode 100644 slirp/qtailq.h diff --git a/slirp/qtailq.h b/slirp/qtailq.h new file mode 100644 index 0000000000..a89b0c439a --- /dev/null +++ b/slirp/qtailq.h @@ -0,0 +1,193 @@ +/* $NetBSD: queue.h,v 1.52 2009/04/20 09:56:08 mschuett Exp $ */ + +/* + * slirp version: Copy from QEMU, removed all but tail queues. + */ + +/* + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)queue.h 8.5 (Berkeley) 8/20/94 + */ + +#ifndef QTAILQ_H +#define QTAILQ_H + +/* + * A tail queue is headed by a pair of pointers, one to the head of the + * list and the other to the tail of the list. The elements are doubly + * linked so that an arbitrary element can be removed without a need to + * traverse the list. New elements can be added to the list before or + * after an existing element, at the head of the list, or at the end of + * the list. A tail queue may be traversed in either direction. + */ +typedef struct QTailQLink { + void *tql_next; + struct QTailQLink *tql_prev; +} QTailQLink; + +/* + * Tail queue definitions. The union acts as a poor man template, as if + * it were QTailQLink. + */ +#define QTAILQ_HEAD(name, type) \ + union name { \ + struct type *tqh_first; /* first element */ \ + QTailQLink tqh_circ; /* link for circular backwards list */ \ + } + +#define QTAILQ_HEAD_INITIALIZER(head) \ + { .tqh_circ = { NULL, &(head).tqh_circ } } + +#define QTAILQ_ENTRY(type) \ + union { \ + struct type *tqe_next; /* next element */ \ + QTailQLink tqe_circ; /* link for circular backwards list */ \ + } + +#define QTAILQ_INIT(head) do { \ + (head)->tqh_first = NULL; \ + (head)->tqh_circ.tql_prev = &(head)->tqh_circ; \ +} while (/*CONSTCOND*/0) + +#define QTAILQ_INSERT_HEAD(head, elm, field) do { \ + if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \ + (head)->tqh_first->field.tqe_circ.tql_prev = \ + &(elm)->field.tqe_circ; \ + else \ + (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \ + (head)->tqh_first = (elm); \ + (elm)->field.tqe_circ.tql_prev = &(head)->tqh_circ; \ +} while (/*CONSTCOND*/0) + +#define QTAILQ_INSERT_TAIL(head, elm, field) do { \ + (elm)->field.tqe_next = NULL; \ + (elm)->field.tqe_circ.tql_prev = (head)->tqh_circ.tql_prev; \ + (head)->tqh_circ.tql_prev->tql_next = (elm); \ + (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \ +} while (/*CONSTCOND*/0) + +#define QTAILQ_INSERT_AFTER(head, listelm, elm, field) do { \ + if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\ + (elm)->field.tqe_next->field.tqe_circ.tql_prev = \ + &(elm)->field.tqe_circ; \ + else \ + (head)->tqh_circ.tql_prev = &(elm)->field.tqe_circ; \ + (listelm)->field.tqe_next = (elm); \ + (elm)->field.tqe_circ.tql_prev = &(listelm)->field.tqe_circ; \ +} while (/*CONSTCOND*/0) + +#define QTAILQ_INSERT_BEFORE(listelm, elm, field) do { \ + (elm)->field.tqe_circ.tql_prev = (listelm)->field.tqe_circ.tql_prev; \ + (elm)->field.tqe_next = (listelm); \ + (listelm)->field.tqe_circ.tql_prev->tql_next = (elm); \ + (listelm)->field.tqe_circ.tql_prev = &(elm)->field.tqe_circ; \ +} while (/*CONSTCOND*/0) + +#define QTAILQ_REMOVE(head, elm, field) do { \ + if (((elm)->field.tqe_next) != NULL) \ + (elm)->field.tqe_next->field.tqe_circ.tql_prev = \ + (elm)->field.tqe_circ.tql_prev; \ + else \ + (head)->tqh_circ.tql_prev = (elm)->field.tqe_circ.tql_prev; \ + (elm)->field.tqe_circ.tql_prev->tql_next = (elm)->field.tqe_next; \ + (elm)->field.tqe_circ.tql_prev = NULL; \ +} while (/*CONSTCOND*/0) + +#define QTAILQ_FOREACH(var, head, field) \ + for ((var) = ((head)->tqh_first); \ + (var); \ + (var) = ((var)->field.tqe_next)) + +#define QTAILQ_FOREACH_SAFE(var, head, field, next_var) \ + for ((var) = ((head)->tqh_first); \ + (var) && ((next_var) = ((var)->field.tqe_next), 1); \ + (var) = (next_var)) + +#define QTAILQ_FOREACH_REVERSE(var, head, field) \ + for ((var) = QTAILQ_LAST(head); \ + (var); \ + (var) = QTAILQ_PREV(var, field)) + +#define QTAILQ_FOREACH_REVERSE_SAFE(var, head, field, prev_var) \ + for ((var) = QTAILQ_LAST(head); \ + (var) && ((prev_var) = QTAILQ_PREV(var, field)); \ + (var) = (prev_var)) + +/* + * Tail queue access methods. + */ +#define QTAILQ_EMPTY(head) ((head)->tqh_first == NULL) +#define QTAILQ_FIRST(head) ((head)->tqh_first) +#define QTAILQ_NEXT(elm, field) ((elm)->field.tqe_next) +#define QTAILQ_IN_USE(elm, field) ((elm)->field.tqe_circ.tql_prev != NULL) + +#define QTAILQ_LINK_PREV(link) \ + ((link).tql_prev->tql_prev->tql_next) +#define QTAILQ_LAST(head) \ + ((typeof((head)->tqh_first)) QTAILQ_LINK_PREV((head)->tqh_circ)) +#define QTAILQ_PREV(elm, field) \ + ((typeof((elm)->field.tqe_next)) QTAILQ_LINK_PREV((elm)->field.tqe_circ)) + +#define field_at_offset(base, offset, type) \ + ((type *) (((char *) (base)) + (offset))) + +/* + * Raw access of elements of a tail queue head. Offsets are all zero + * because it's a union. + */ +#define QTAILQ_RAW_FIRST(head) \ + field_at_offset(head, 0, void *) +#define QTAILQ_RAW_TQH_CIRC(head) \ + field_at_offset(head, 0, QTailQLink) + +/* + * Raw access of elements of a tail entry + */ +#define QTAILQ_RAW_NEXT(elm, entry) \ + field_at_offset(elm, entry, void *) +#define QTAILQ_RAW_TQE_CIRC(elm, entry) \ + field_at_offset(elm, entry, QTailQLink) +/* + * Tail queue traversal using pointer arithmetic. + */ +#define QTAILQ_RAW_FOREACH(elm, head, entry) \ + for ((elm) = *QTAILQ_RAW_FIRST(head); \ + (elm); \ + (elm) = *QTAILQ_RAW_NEXT(elm, entry)) +/* + * Tail queue insertion using pointer arithmetic. + */ +#define QTAILQ_RAW_INSERT_TAIL(head, elm, entry) do { \ + *QTAILQ_RAW_NEXT(elm, entry) = NULL; \ + QTAILQ_RAW_TQE_CIRC(elm, entry)->tql_prev = QTAILQ_RAW_TQH_CIRC(head)->tql_prev; \ + QTAILQ_RAW_TQH_CIRC(head)->tql_prev->tql_next = (elm); \ + QTAILQ_RAW_TQH_CIRC(head)->tql_prev = QTAILQ_RAW_TQE_CIRC(elm, entry); \ +} while (/*CONSTCOND*/0) + +#endif /* QTAILQ_H */ diff --git a/slirp/slirp.h b/slirp/slirp.h index c9f9143801..0e4d973c2a 100644 --- a/slirp/slirp.h +++ b/slirp/slirp.h @@ -46,8 +46,7 @@ typedef char *caddr_t; #include "debug.h" #include "util.h" - -#include "qemu/queue.h" +#include "qtailq.h" #include "libslirp.h" #include "ip.h"