From nobody Mon Nov 10 19:48:41 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1558282830; cv=none; d=zoho.com; s=zohoarc; b=SrC9VNPuSjk7GcvEzKMkaaHJqDz/iQ5Z69UhGec3fK5gqIyHhbgPa5LUOlksOSsnKym3ftFeYN9lHibuUsn7VlcPLTFzsAKHU0ix7PmAdl9h/QJ/ww9T2tdIvOvNlUY3i504+phYQX3C+nsYg5dC52AfsRk6t7HCjiAH8s0FOuo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1558282830; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=dD5YyG6XAHS0Z3dKQMMuZm4Ncsfuj1KcK56++WdS32o=; b=h/GhzgxBVkmuqdQasCweiQpFB6/s9QRgX4j4ZT1wXtFCg0Qjc5bMiTM/xhukPS3eHTCv4RTR9jskPWV+9UFS5rpaLAfsHZJR8+2gkl9Qruy4W8Xp9cXY+83QRnQ/uucw/ikqNJGx1gMlvxwaKJtQaThC87TA9OqGkQ3gXGewr1k= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1558282830716107.29586215540769; Sun, 19 May 2019 09:20:30 -0700 (PDT) Received: from localhost ([127.0.0.1]:50706 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSOXq-0008WR-K0 for importer@patchew.org; Sun, 19 May 2019 12:20:18 -0400 Received: from eggs.gnu.org ([209.51.188.92]:44702) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSOUr-0006on-MD for qemu-devel@nongnu.org; Sun, 19 May 2019 12:17:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hSOUq-0007Ly-KH for qemu-devel@nongnu.org; Sun, 19 May 2019 12:17:13 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:54277 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hSOUq-0007LS-Dd for qemu-devel@nongnu.org; Sun, 19 May 2019 12:17:12 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 5ADDF1A1182; Sun, 19 May 2019 18:17:11 +0200 (CEST) Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 3A8971A0EEE; Sun, 19 May 2019 18:17:11 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Sun, 19 May 2019 18:15:25 +0200 Message-Id: <1558282527-22183-5-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1558282527-22183-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1558282527-22183-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PATCH v6 4/6] linux-user: Add support for setsockopt() options IPV6__MEMBERSHIP 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: lvivier@redhat.com, thuth@redhat.com, jcmvbkbc@gmail.com, arikalo@wavecomp.com, daniel.santos@pobox.com, amarkovic@wavecomp.com, nchen@wavecomp.com, philmd@redhat.com, aurelien@aurel32.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Neng Chen Add support for options IPV6_ADD_MEMBERSHIP and IPV6_DROP_MEMPEMBERSHIP of the syscall setsockopt(). These options control membership in multicast groups. Their argument is a pointer to a struct ipv6_mreq, which is in turn defined in IP v6 header netinet/in.h as: struct ipv6_mreq { /* IPv6 multicast address of group */ struct in6_addr ipv6mr_multiaddr; /* local IPv6 address of interface */ int ipv6mr_interface; }; ...whereas its definition in kernel's include/uapi/linux/in6.h is: #if __UAPI_DEF_IPV6_MREQ struct ipv6_mreq { /* IPv6 multicast address of group */ struct in6_addr ipv6mr_multiaddr; /* local IPv6 address of interface */ int ipv6mr_ifindex; }; #endif The first field of ipv6_mreq has the same name ("ipv6mr_multiaddr") and type ("in6_addr") in both cases. Moreover, the in6_addr structure consists of fields that are always big-endian (on host of any endian), therefore the ipv6_mreq's field ipv6mr_multiaddr doesn't need any endian conversion. The second field of ipv6_mreq may, however, depending on the build environment, have different names. This is the reason why the line "#if __UAPI_DEF_IPV6_MREQ" is used in this patch - to establish the right choice for the field name. Also, endian conversion is needed for this field, since it is of type "int". Signed-off-by: Neng Chen Signed-off-by: Aleksandar Markovic Reviewed-by: Laurent Vivier --- linux-user/syscall.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 96cd4bf..acff14d 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -1892,6 +1892,29 @@ static abi_long do_setsockopt(int sockfd, int level,= int optname, &pki, sizeof(pki))); break; } + case IPV6_ADD_MEMBERSHIP: + case IPV6_DROP_MEMBERSHIP: + { + struct ipv6_mreq ipv6mreq; + + if (optlen < sizeof(ipv6mreq)) { + return -TARGET_EINVAL; + } + + if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) { + return -TARGET_EFAULT; + } + +#if __UAPI_DEF_IPV6_MREQ + ipv6mreq.ipv6mr_ifindex =3D tswap32(ipv6mreq.ipv6mr_ifindex); +#else + ipv6mreq.ipv6mr_interface =3D tswap32(ipv6mreq.ipv6mr_interfac= e); +#endif /* __UAPI_DEF_IVP6_MREQ */ + + ret =3D get_errno(setsockopt(sockfd, level, optname, + &ipv6mreq, sizeof(ipv6mreq))); + break; + } default: goto unimplemented; } --=20 2.7.4