From patchwork Thu Jun 23 15:53:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892862 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E7619C433EF for ; Thu, 23 Jun 2022 15:55:41 +0000 (UTC) Received: from localhost ([::1]:51742 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4PBD-0000Ek-Tj for qemu-devel@archiver.kernel.org; Thu, 23 Jun 2022 11:55:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46092) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4P95-00050r-6j for qemu-devel@nongnu.org; Thu, 23 Jun 2022 11:53:27 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:59342) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4P92-00050a-Nk for qemu-devel@nongnu.org; Thu, 23 Jun 2022 11:53:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1655999604; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LBEGRknIHHKdOKMeHfPexmXP7tV5hSQhCzT2ki2tK2k=; b=iNzkYjZzxyMkccBhZNq/QC/+MRDmO9uvBd+7jtOfQoNgOkaF4k7xU7ZPiVsULsoAn7KY1z riMzGN9M/VVCtw7323IwhGGVdekHvdBpd6h4xQF3wwdp3eIT3isq2oo++k2lE06evMAM+B 8Vjs92sAHpLYrYKUD33tM/TTC/3Mtew= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-52-9AJS9kh5Nl-3P0AkP2912g-1; Thu, 23 Jun 2022 11:53:22 -0400 X-MC-Unique: 9AJS9kh5Nl-3P0AkP2912g-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 966D185A589 for ; Thu, 23 Jun 2022 15:53:22 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id B1355C2811A; Thu, 23 Jun 2022 15:53:20 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Laurent Vivier , Stefano Brivio Subject: [RFC PATCH v4 01/11] net: introduce convert_host_port() Date: Thu, 23 Jun 2022 17:53:07 +0200 Message-Id: <20220623155317.675932-2-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.133.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio --- include/qemu/sockets.h | 2 ++ net/net.c | 62 ++++++++++++++++++++++-------------------- 2 files changed, 34 insertions(+), 30 deletions(-) diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 038faa157f59..47194b9732f8 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -47,6 +47,8 @@ void socket_listen_cleanup(int fd, Error **errp); int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp); /* Old, ipv4 only bits. Don't use for new code. */ +int convert_host_port(struct sockaddr_in *saddr, const char *host, + const char *port, Error **errp); int parse_host_port(struct sockaddr_in *saddr, const char *str, Error **errp); int socket_init(void); diff --git a/net/net.c b/net/net.c index 2db160e0634d..d2288bd3a929 100644 --- a/net/net.c +++ b/net/net.c @@ -66,55 +66,57 @@ static QTAILQ_HEAD(, NetClientState) net_clients; /***********************************************************/ /* network device redirectors */ -int parse_host_port(struct sockaddr_in *saddr, const char *str, - Error **errp) +int convert_host_port(struct sockaddr_in *saddr, const char *host, + const char *port, Error **errp) { - gchar **substrings; struct hostent *he; - const char *addr, *p, *r; - int port, ret = 0; + const char *r; + long p; memset(saddr, 0, sizeof(*saddr)); - substrings = g_strsplit(str, ":", 2); - if (!substrings || !substrings[0] || !substrings[1]) { - error_setg(errp, "host address '%s' doesn't contain ':' " - "separating host from port", str); - ret = -1; - goto out; - } - - addr = substrings[0]; - p = substrings[1]; - saddr->sin_family = AF_INET; - if (addr[0] == '\0') { + if (host[0] == '\0') { saddr->sin_addr.s_addr = 0; } else { - if (qemu_isdigit(addr[0])) { - if (!inet_aton(addr, &saddr->sin_addr)) { + if (qemu_isdigit(host[0])) { + if (!inet_aton(host, &saddr->sin_addr)) { error_setg(errp, "host address '%s' is not a valid " - "IPv4 address", addr); - ret = -1; - goto out; + "IPv4 address", host); + return -1; } } else { - he = gethostbyname(addr); + he = gethostbyname(host); if (he == NULL) { - error_setg(errp, "can't resolve host address '%s'", addr); - ret = -1; - goto out; + error_setg(errp, "can't resolve host address '%s'", host); + return -1; } saddr->sin_addr = *(struct in_addr *)he->h_addr; } } - port = strtol(p, (char **)&r, 0); - if (r == p) { - error_setg(errp, "port number '%s' is invalid", p); + if (qemu_strtol(port, &r, 0, &p) != 0) { + error_setg(errp, "port number '%s' is invalid", port); + return -1; + } + saddr->sin_port = htons(p); + return 0; +} + +int parse_host_port(struct sockaddr_in *saddr, const char *str, + Error **errp) +{ + gchar **substrings; + int ret; + + substrings = g_strsplit(str, ":", 2); + if (!substrings || !substrings[0] || !substrings[1]) { + error_setg(errp, "host address '%s' doesn't contain ':' " + "separating host from port", str); ret = -1; goto out; } - saddr->sin_port = htons(port); + + ret = convert_host_port(saddr, substrings[0], substrings[1], errp); out: g_strfreev(substrings); From patchwork Thu Jun 23 15:53:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892861 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E27C1C433EF for ; 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bh=4AVY2vOG4mu6TNoVTyJtrvdewOLcSJgp6qIDrFShNnQ=; b=R55Zp9uCMBFXnNQ2XavhS1G8saBnkIO92JxkvRhAIBqgl8FtXAcz5GPMRRcwNKfSNSYpK1 rwQcEjloD+90VforQ24LiXKFHCG0bHAoRQmk75Ku7tdmI2o7gqCt8sao0+1hQTO/+FGORq ePm+OA01NwsGcsF90fVaYMTd6Hm9yI8= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-258-W9tPhCakM1uH9-k-xTxA0w-1; Thu, 23 Jun 2022 11:53:24 -0400 X-MC-Unique: W9tPhCakM1uH9-k-xTxA0w-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 889BF294EDE2 for ; Thu, 23 Jun 2022 15:53:24 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id 02D16C2810D; Thu, 23 Jun 2022 15:53:22 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Laurent Vivier Subject: [RFC PATCH v4 02/11] net: remove the @errp argument of net_client_inits() Date: Thu, 23 Jun 2022 17:53:08 +0200 Message-Id: <20220623155317.675932-3-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.133.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The only caller passes &error_fatal, so use this directly in the function. It's what we do for -blockdev, -device, and -object. Signed-off-by: Laurent Vivier Reviewed-by: Markus Armbruster --- include/net/net.h | 2 +- net/net.c | 20 +++++++------------- softmmu/vl.c | 2 +- 3 files changed, 9 insertions(+), 15 deletions(-) diff --git a/include/net/net.h b/include/net/net.h index 523136c7acba..c53c64ac18c4 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -216,7 +216,7 @@ extern const char *host_net_devices[]; /* from net.c */ int net_client_parse(QemuOptsList *opts_list, const char *str); void show_netdevs(void); -int net_init_clients(Error **errp); +void net_init_clients(void); void net_check_clients(void); void net_cleanup(void); void hmp_host_net_add(Monitor *mon, const QDict *qdict); diff --git a/net/net.c b/net/net.c index d2288bd3a929..15958f881776 100644 --- a/net/net.c +++ b/net/net.c @@ -1562,27 +1562,21 @@ out: return ret; } -int net_init_clients(Error **errp) +void net_init_clients(void) { net_change_state_entry = qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); QTAILQ_INIT(&net_clients); - if (qemu_opts_foreach(qemu_find_opts("netdev"), - net_init_netdev, NULL, errp)) { - return -1; - } - - if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) { - return -1; - } + qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, + &error_fatal); - if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) { - return -1; - } + qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, + &error_fatal); - return 0; + qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, + &error_fatal); } int net_client_parse(QemuOptsList *opts_list, const char *optarg) diff --git a/softmmu/vl.c b/softmmu/vl.c index 54e920ada1a1..c244e8afc4cc 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -1898,7 +1898,7 @@ static void qemu_create_late_backends(void) qtest_server_init(qtest_chrdev, qtest_log, &error_fatal); } - net_init_clients(&error_fatal); + net_init_clients(); object_option_foreach_add(object_create_late); From patchwork Thu Jun 23 15:53:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892875 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3ED73C433EF for ; Thu, 23 Jun 2022 15:58:22 +0000 (UTC) Received: from localhost ([::1]:60192 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4PDp-000608-8k for qemu-devel@archiver.kernel.org; Thu, 23 Jun 2022 11:58:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46130) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4P9A-0005DU-R5 for qemu-devel@nongnu.org; Thu, 23 Jun 2022 11:53:32 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:24099) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4P97-000512-Gc for qemu-devel@nongnu.org; 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Thu, 23 Jun 2022 15:53:26 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id E797CC23DBF; Thu, 23 Jun 2022 15:53:24 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Laurent Vivier Subject: [RFC PATCH v4 03/11] qapi: net: introduce a way to bypass qemu_opts_parse_noisily() Date: Thu, 23 Jun 2022 17:53:09 +0200 Message-Id: <20220623155317.675932-4-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.129.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" As qemu_opts_parse_noisily() flattens the QAPI structures ("type" field of Netdev structure can collides with "type" field of SocketAddress), we introduce a way to bypass qemu_opts_parse_noisily() and use directly visit_type_Netdev() to parse the backend parameters. More details from Markus: qemu_init() passes the argument of -netdev, -nic, and -net to net_client_parse(). net_client_parse() parses with qemu_opts_parse_noisily(), passing QemuOptsList qemu_netdev_opts for -netdev, qemu_nic_opts for -nic, and qemu_net_opts for -net. Their desc[] are all empty, which means any keys are accepted. The result of the parse (a QemuOpts) is stored in the QemuOptsList. Note that QemuOpts is flat by design. In some places, we layer non-flat on top using dotted keys convention, but not here. net_init_clients() iterates over the stored QemuOpts, and passes them to net_init_netdev(), net_param_nic(), or net_init_client(), respectively. These functions pass the QemuOpts to net_client_init(). They also do other things with the QemuOpts, which we can ignore here. net_client_init() uses the opts visitor to convert the (flat) QemOpts to a (non-flat) QAPI object Netdev. Netdev is also the argument of QMP command netdev_add. The opts visitor was an early attempt to support QAPI in (QemuOpts-based) CLI. It restricts QAPI types to a certain shape; see commit eb7ee2cbeb "qapi: introduce OptsVisitor". A more modern way to support QAPI is qobject_input_visitor_new_str(). It uses keyval_parse() instead of QemuOpts for KEY=VALUE,... syntax, and it also supports JSON syntax. The former isn't quite as expressive as JSON, but it's a lot closer than QemuOpts + opts visitor. This commit paves the way to use of the modern way instead. Signed-off-by: Laurent Vivier --- include/net/net.h | 4 +++- net/net.c | 60 +++++++++++++++++++++++++++++++++++++++++++---- softmmu/vl.c | 14 +++++------ 3 files changed, 65 insertions(+), 13 deletions(-) diff --git a/include/net/net.h b/include/net/net.h index c53c64ac18c4..826e14a78734 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -214,7 +214,9 @@ extern NICInfo nd_table[MAX_NICS]; extern const char *host_net_devices[]; /* from net.c */ -int net_client_parse(QemuOptsList *opts_list, const char *str); +bool netdev_is_modern(const char *optarg); +void netdev_parse_modern(const char *optarg); +void net_client_parse(QemuOptsList *opts_list, const char *str); void show_netdevs(void); void net_init_clients(void); void net_check_clients(void); diff --git a/net/net.c b/net/net.c index 15958f881776..531e6c5d2056 100644 --- a/net/net.c +++ b/net/net.c @@ -54,6 +54,7 @@ #include "net/colo-compare.h" #include "net/filter.h" #include "qapi/string-output-visitor.h" +#include "qapi/qobject-input-visitor.h" /* Net bridge is currently not supported for W32. */ #if !defined(_WIN32) @@ -63,6 +64,16 @@ static VMChangeStateEntry *net_change_state_entry; static QTAILQ_HEAD(, NetClientState) net_clients; +typedef struct NetdevQueueEntry { + Netdev *nd; + Location loc; + QSIMPLEQ_ENTRY(NetdevQueueEntry) entry; +} NetdevQueueEntry; + +typedef QSIMPLEQ_HEAD(, NetdevQueueEntry) NetdevQueue; + +static NetdevQueue nd_queue = QSIMPLEQ_HEAD_INITIALIZER(nd_queue); + /***********************************************************/ /* network device redirectors */ @@ -1562,6 +1573,20 @@ out: return ret; } +static void netdev_init_modern(void) +{ + while (!QSIMPLEQ_EMPTY(&nd_queue)) { + NetdevQueueEntry *nd = QSIMPLEQ_FIRST(&nd_queue); + + QSIMPLEQ_REMOVE_HEAD(&nd_queue, entry); + loc_push_restore(&nd->loc); + net_client_init1(nd->nd, true, &error_fatal); + loc_pop(&nd->loc); + qapi_free_Netdev(nd->nd); + g_free(nd); + } +} + void net_init_clients(void) { net_change_state_entry = @@ -1569,6 +1594,8 @@ void net_init_clients(void) QTAILQ_INIT(&net_clients); + netdev_init_modern(); + qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, &error_fatal); @@ -1579,13 +1606,38 @@ void net_init_clients(void) &error_fatal); } -int net_client_parse(QemuOptsList *opts_list, const char *optarg) +/* + * netdev_is_modern() returns true when the backend needs to bypass + * qemu_opts_parse_noisily() + */ +bool netdev_is_modern(const char *optarg) +{ + return false; +} + +/* + * netdev_parse_modern() uses modern, more expressive syntax than + * net_client_parse(), supports only the netdev option. + */ +void netdev_parse_modern(const char *optarg) +{ + Visitor *v; + NetdevQueueEntry *nd; + + v = qobject_input_visitor_new_str(optarg, "type", &error_fatal); + nd = g_new(NetdevQueueEntry, 1); + visit_type_Netdev(v, NULL, &nd->nd, &error_fatal); + visit_free(v); + loc_save(&nd->loc); + + QSIMPLEQ_INSERT_TAIL(&nd_queue, nd, entry); +} + +void net_client_parse(QemuOptsList *opts_list, const char *optarg) { if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { - return -1; + exit(1); } - - return 0; } /* From FreeBSD */ diff --git a/softmmu/vl.c b/softmmu/vl.c index c244e8afc4cc..f557e2d8cb8a 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -2794,21 +2794,19 @@ void qemu_init(int argc, char **argv, char **envp) break; case QEMU_OPTION_netdev: default_net = 0; - if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) { - exit(1); + if (netdev_is_modern(optarg)) { + netdev_parse_modern(optarg); + } else { + net_client_parse(qemu_find_opts("netdev"), optarg); } break; case QEMU_OPTION_nic: default_net = 0; - if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) { - exit(1); - } + net_client_parse(qemu_find_opts("nic"), optarg); break; case QEMU_OPTION_net: default_net = 0; - if (net_client_parse(qemu_find_opts("net"), optarg) == -1) { - exit(1); - } + net_client_parse(qemu_find_opts("net"), optarg); break; #ifdef CONFIG_LIBISCSI case QEMU_OPTION_iscsi: From patchwork Thu Jun 23 15:53:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892874 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4C59CC433EF for ; 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bh=PpowSK5ULtT3ADzJ7DCwr94kwNLikIyp7Bwny2wViSQ=; b=OhN9yT5svcnv0zgyr18eAXXRB3EozRBaXdXQ7xtQ7vnMDtxy3e5PwCG/f5UNrGcVDlJK3+ S9C7NEuZgMtwMpag97p9W7z7FGu5OSvIhorRJfuZfRGPK8svMkZt/5UP69fcmNwapx5FQX AXHvcbUdvBOqpWa63UL7nku0f1WhAhE= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-558-vIZ23yHhMl62GZblD9QH7Q-1; Thu, 23 Jun 2022 11:53:29 -0400 X-MC-Unique: vIZ23yHhMl62GZblD9QH7Q-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DE56D801E80 for ; Thu, 23 Jun 2022 15:53:28 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id CB717C2810D; Thu, 23 Jun 2022 15:53:26 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Laurent Vivier , Stefano Brivio Subject: [RFC PATCH v4 04/11] qapi: net: add stream and dgram netdevs Date: Thu, 23 Jun 2022 17:53:10 +0200 Message-Id: <20220623155317.675932-5-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.133.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Copied from socket netdev file and modified to use SocketAddress to be able to introduce new features like unix socket. "udp" and "mcast" are squashed into dgram netdev, multicast is detected according to the IP address type. "listen" and "connect" modes are managed by stream netdev. An optional parameter "server" defines the mode (server by default) Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio --- hmp-commands.hx | 2 +- net/clients.h | 6 + net/dgram.c | 631 ++++++++++++++++++++++++++++++++++++++++++++++++ net/hub.c | 2 + net/meson.build | 2 + net/net.c | 34 ++- net/stream.c | 426 ++++++++++++++++++++++++++++++++ qapi/net.json | 44 +++- qemu-options.hx | 12 + 9 files changed, 1155 insertions(+), 4 deletions(-) create mode 100644 net/dgram.c create mode 100644 net/stream.c diff --git a/hmp-commands.hx b/hmp-commands.hx index c9d465735ac0..99c2bc37cc10 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -1276,7 +1276,7 @@ ERST { .name = "netdev_add", .args_type = "netdev:O", - .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user" + .params = "[user|tap|socket|stream|dgram|vde|bridge|hubport|netmap|vhost-user" #ifdef CONFIG_VMNET "|vmnet-host|vmnet-shared|vmnet-bridged" #endif diff --git a/net/clients.h b/net/clients.h index c9157789f2ce..ed8bdfff1e7c 100644 --- a/net/clients.h +++ b/net/clients.h @@ -40,6 +40,12 @@ int net_init_hubport(const Netdev *netdev, const char *name, int net_init_socket(const Netdev *netdev, const char *name, NetClientState *peer, Error **errp); +int net_init_stream(const Netdev *netdev, const char *name, + NetClientState *peer, Error **errp); + +int net_init_dgram(const Netdev *netdev, const char *name, + NetClientState *peer, Error **errp); + int net_init_tap(const Netdev *netdev, const char *name, NetClientState *peer, Error **errp); diff --git a/net/dgram.c b/net/dgram.c new file mode 100644 index 000000000000..dbe65102d174 --- /dev/null +++ b/net/dgram.c @@ -0,0 +1,631 @@ +/* + * QEMU System Emulator + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" + +#include "net/net.h" +#include "clients.h" +#include "monitor/monitor.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "qemu/option.h" +#include "qemu/sockets.h" +#include "qemu/iov.h" +#include "qemu/main-loop.h" +#include "qemu/cutils.h" + +typedef struct NetDgramState { + NetClientState nc; + int listen_fd; + int fd; + SocketReadState rs; + /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ + struct sockaddr_in dgram_dst; + IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */ + bool read_poll; /* waiting to receive data? */ + bool write_poll; /* waiting to transmit data? */ +} NetDgramState; + +static void net_dgram_accept(void *opaque); +static void net_dgram_writable(void *opaque); + +static void net_dgram_update_fd_handler(NetDgramState *s) +{ + qemu_set_fd_handler(s->fd, + s->read_poll ? s->send_fn : NULL, + s->write_poll ? net_dgram_writable : NULL, + s); +} + +static void net_dgram_read_poll(NetDgramState *s, bool enable) +{ + s->read_poll = enable; + net_dgram_update_fd_handler(s); +} + +static void net_dgram_write_poll(NetDgramState *s, bool enable) +{ + s->write_poll = enable; + net_dgram_update_fd_handler(s); +} + +static void net_dgram_writable(void *opaque) +{ + NetDgramState *s = opaque; + + net_dgram_write_poll(s, false); + + qemu_flush_queued_packets(&s->nc); +} + +static ssize_t net_dgram_receive_dgram(NetClientState *nc, + const uint8_t *buf, size_t size) +{ + NetDgramState *s = DO_UPCAST(NetDgramState, nc, nc); + ssize_t ret; + + do { + if (s->dgram_dst.sin_family != AF_UNIX) { + ret = sendto(s->fd, buf, size, 0, + (struct sockaddr *)&s->dgram_dst, + sizeof(s->dgram_dst)); + } else { + ret = send(s->fd, buf, size, 0); + } + } while (ret == -1 && errno == EINTR); + + if (ret == -1 && errno == EAGAIN) { + net_dgram_write_poll(s, true); + return 0; + } + return ret; +} + +static void net_dgram_send_completed(NetClientState *nc, ssize_t len) +{ + NetDgramState *s = DO_UPCAST(NetDgramState, nc, nc); + + if (!s->read_poll) { + net_dgram_read_poll(s, true); + } +} + +static void net_dgram_rs_finalize(SocketReadState *rs) +{ + NetDgramState *s = container_of(rs, NetDgramState, rs); + + if (qemu_send_packet_async(&s->nc, rs->buf, + rs->packet_len, + net_dgram_send_completed) == 0) { + net_dgram_read_poll(s, false); + } +} + +static void net_dgram_send(void *opaque) +{ + NetDgramState *s = opaque; + int size; + int ret; + uint8_t buf1[NET_BUFSIZE]; + const uint8_t *buf; + + size = recv(s->fd, buf1, sizeof(buf1), 0); + if (size < 0) { + if (errno != EWOULDBLOCK) { + goto eoc; + } + } else if (size == 0) { + /* end of connection */ + eoc: + net_dgram_read_poll(s, false); + net_dgram_write_poll(s, false); + if (s->listen_fd != -1) { + qemu_set_fd_handler(s->listen_fd, net_dgram_accept, NULL, s); + } + closesocket(s->fd); + + s->fd = -1; + net_socket_rs_init(&s->rs, net_dgram_rs_finalize, false); + s->nc.link_down = true; + memset(s->nc.info_str, 0, sizeof(s->nc.info_str)); + + return; + } + buf = buf1; + + ret = net_fill_rstate(&s->rs, buf, size); + + if (ret == -1) { + goto eoc; + } +} + +static void net_dgram_send_dgram(void *opaque) +{ + NetDgramState *s = opaque; + int size; + + size = recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0); + if (size < 0) { + return; + } + if (size == 0) { + /* end of connection */ + net_dgram_read_poll(s, false); + net_dgram_write_poll(s, false); + return; + } + if (qemu_send_packet_async(&s->nc, s->rs.buf, size, + net_dgram_send_completed) == 0) { + net_dgram_read_poll(s, false); + } +} + +static int net_dgram_mcast_create(struct sockaddr_in *mcastaddr, + struct in_addr *localaddr, + Error **errp) +{ + struct ip_mreq imr; + int fd; + int val, ret; +#ifdef __OpenBSD__ + unsigned char loop; +#else + int loop; +#endif + + if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { + error_setg(errp, "specified mcastaddr %s (0x%08x) " + "does not contain a multicast address", + inet_ntoa(mcastaddr->sin_addr), + (int)ntohl(mcastaddr->sin_addr.s_addr)); + return -1; + } + + fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create datagram socket"); + return -1; + } + + /* + * Allow multiple sockets to bind the same multicast ip and port by setting + * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set + * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR + * only on posix systems. + */ + val = 1; + ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't set socket option SO_REUSEADDR"); + goto fail; + } + + ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't bind ip=%s to socket", + inet_ntoa(mcastaddr->sin_addr)); + goto fail; + } + + /* Add host to multicast group */ + imr.imr_multiaddr = mcastaddr->sin_addr; + if (localaddr) { + imr.imr_interface = *localaddr; + } else { + imr.imr_interface.s_addr = htonl(INADDR_ANY); + } + + ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, + &imr, sizeof(struct ip_mreq)); + if (ret < 0) { + error_setg_errno(errp, errno, + "can't add socket to multicast group %s", + inet_ntoa(imr.imr_multiaddr)); + goto fail; + } + + /* Force mcast msgs to loopback (eg. several QEMUs in same host */ + loop = 1; + ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, + &loop, sizeof(loop)); + if (ret < 0) { + error_setg_errno(errp, errno, + "can't force multicast message to loopback"); + goto fail; + } + + /* If a bind address is given, only send packets from that address */ + if (localaddr != NULL) { + ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, + localaddr, sizeof(*localaddr)); + if (ret < 0) { + error_setg_errno(errp, errno, + "can't set the default network send interface"); + goto fail; + } + } + + qemu_socket_set_nonblock(fd); + return fd; +fail: + if (fd >= 0) { + closesocket(fd); + } + return -1; +} + +static void net_dgram_cleanup(NetClientState *nc) +{ + NetDgramState *s = DO_UPCAST(NetDgramState, nc, nc); + if (s->fd != -1) { + net_dgram_read_poll(s, false); + net_dgram_write_poll(s, false); + close(s->fd); + s->fd = -1; + } + if (s->listen_fd != -1) { + qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); + closesocket(s->listen_fd); + s->listen_fd = -1; + } +} + +static NetClientInfo net_dgram_socket_info = { + .type = NET_CLIENT_DRIVER_DGRAM, + .size = sizeof(NetDgramState), + .receive = net_dgram_receive_dgram, + .cleanup = net_dgram_cleanup, +}; + +static NetDgramState *net_dgram_fd_init_dgram(NetClientState *peer, + const char *model, + const char *name, + int fd, int is_fd, + SocketAddress *mcast, + Error **errp) +{ + struct sockaddr_in saddr; + int newfd; + NetClientState *nc; + NetDgramState *s; + SocketAddress *sa; + SocketAddressType sa_type; + + sa = socket_local_address(fd, errp); + if (!sa) { + return NULL; + } + sa_type = sa->type; + qapi_free_SocketAddress(sa); + + /* + * fd passed: multicast: "learn" dgram_dst address from bound address and + * save it. Because this may be "shared" socket from a "master" process, + * datagrams would be recv() by ONLY ONE process: we must "clone" this + * dgram socket --jjo + */ + + if (is_fd && mcast != NULL) { + if (convert_host_port(&saddr, mcast->u.inet.host, + mcast->u.inet.port, errp) < 0) { + goto err; + } + /* must be bound */ + if (saddr.sin_addr.s_addr == 0) { + error_setg(errp, "can't setup multicast destination address"); + goto err; + } + /* clone dgram socket */ + newfd = net_dgram_mcast_create(&saddr, NULL, errp); + if (newfd < 0) { + goto err; + } + /* clone newfd to fd, close newfd */ + dup2(newfd, fd); + close(newfd); + + } + + nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); + + s = DO_UPCAST(NetDgramState, nc, nc); + + s->fd = fd; + s->listen_fd = -1; + s->send_fn = net_dgram_send_dgram; + net_socket_rs_init(&s->rs, net_dgram_rs_finalize, false); + net_dgram_read_poll(s, true); + + /* mcast: save bound address as dst */ + if (is_fd && mcast != NULL) { + s->dgram_dst = saddr; + snprintf(nc->info_str, sizeof(nc->info_str), + "fd=%d (cloned mcast=%s:%d)", + fd, inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + } else { + if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { + s->dgram_dst.sin_family = AF_UNIX; + } + + snprintf(nc->info_str, sizeof(nc->info_str), "fd=%d %s", fd, + SocketAddressType_str(sa_type)); + } + + return s; + +err: + closesocket(fd); + return NULL; +} + +static void net_dgram_connect(void *opaque) +{ + NetDgramState *s = opaque; + s->send_fn = net_dgram_send; + net_dgram_read_poll(s, true); +} + +static void net_dgram_accept(void *opaque) +{ + NetDgramState *s = opaque; + struct sockaddr_in saddr; + socklen_t len; + int fd; + + for (;;) { + len = sizeof(saddr); + fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); + if (fd < 0 && errno != EINTR) { + return; + } else if (fd >= 0) { + qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); + break; + } + } + + s->fd = fd; + s->nc.link_down = false; + net_dgram_connect(s); + snprintf(s->nc.info_str, sizeof(s->nc.info_str), "connection from %s:%d", + inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); +} + +static int net_dgram_mcast_init(NetClientState *peer, + const char *model, + const char *name, + SocketAddress *remote, + SocketAddress *local, + Error **errp) +{ + NetDgramState *s; + int fd, ret; + struct sockaddr_in saddr; + + if (remote->type != SOCKET_ADDRESS_TYPE_INET) { + error_setg(errp, "multicast only support inet type"); + return -1; + } + + if (convert_host_port(&saddr, remote->u.inet.host, remote->u.inet.port, + errp) < 0) { + return -1; + } + + if (!local) { + fd = net_dgram_mcast_create(&saddr, NULL, errp); + if (fd < 0) { + return -1; + } + } else { + switch (local->type) { + case SOCKET_ADDRESS_TYPE_INET: { + struct in_addr localaddr; + + if (inet_aton(local->u.inet.host, &localaddr) == 0) { + error_setg(errp, "localaddr '%s' is not a valid IPv4 address", + local->u.inet.host); + return -1; + } + + fd = net_dgram_mcast_create(&saddr, &localaddr, errp); + if (fd < 0) { + return -1; + } + break; + } + case SOCKET_ADDRESS_TYPE_FD: + fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); + if (fd == -1) { + return -1; + } + ret = qemu_socket_try_set_nonblock(fd); + if (ret < 0) { + error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", + name, fd); + return -1; + } + break; + default: + error_setg(errp, "only support inet or fd type for local"); + return -1; + } + } + + s = net_dgram_fd_init_dgram(peer, model, name, fd, + local->type == SOCKET_ADDRESS_TYPE_FD, + remote, errp); + if (!s) { + return -1; + } + + s->dgram_dst = saddr; + + snprintf(s->nc.info_str, sizeof(s->nc.info_str), "mcast=%s:%d", + inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + return 0; + +} + +static int net_dgram_udp_init(NetClientState *peer, + const char *model, + const char *name, + SocketAddress *remote, + SocketAddress *local, + Error **errp) +{ + NetDgramState *s; + int fd, ret; + struct sockaddr_in raddr_in; + gchar *info_str; + + if (remote) { + if (local->type == SOCKET_ADDRESS_TYPE_FD) { + error_setg(errp, "don't set remote with local.fd"); + return -1; + } + if (remote->type != local->type) { + error_setg(errp, "remote and local types must be the same"); + return -1; + } + } else { + if (local->type != SOCKET_ADDRESS_TYPE_FD) { + error_setg(errp, "type=inet requires remote parameter"); + return -1; + } + } + + switch (local->type) { + case SOCKET_ADDRESS_TYPE_INET: { + struct sockaddr_in laddr_in; + + if (convert_host_port(&laddr_in, local->u.inet.host, local->u.inet.port, + errp) < 0) { + return -1; + } + + if (convert_host_port(&raddr_in, remote->u.inet.host, + remote->u.inet.port, errp) < 0) { + return -1; + } + + fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create datagram socket"); + return -1; + } + + ret = socket_set_fast_reuse(fd); + if (ret < 0) { + error_setg_errno(errp, errno, + "can't set socket option SO_REUSEADDR"); + closesocket(fd); + return -1; + } + ret = bind(fd, (struct sockaddr *)&laddr_in, sizeof(laddr_in)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't bind ip=%s to socket", + inet_ntoa(laddr_in.sin_addr)); + closesocket(fd); + return -1; + } + qemu_socket_set_nonblock(fd); + + info_str = g_strdup_printf("udp=%s:%d/%s:%d", + inet_ntoa(laddr_in.sin_addr), ntohs(laddr_in.sin_port), + inet_ntoa(raddr_in.sin_addr), ntohs(raddr_in.sin_port)); + + break; + } + case SOCKET_ADDRESS_TYPE_FD: + fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); + if (fd == -1) { + return -1; + } + ret = qemu_socket_try_set_nonblock(fd); + if (ret < 0) { + error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", + name, fd); + return -1; + } + break; + default: + error_setg(errp, "only support inet or fd type for local"); + return -1; + } + + s = net_dgram_fd_init_dgram(peer, model, name, fd, 0, NULL, errp); + if (!s) { + return -1; + } + + if (remote) { + s->dgram_dst = raddr_in; + + pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str); + g_free(info_str); + } + return 0; +} + +static int net_dgram_init(NetClientState *peer, + const char *model, + const char *name, + SocketAddress *remote, + SocketAddress *local, + Error **errp) +{ + /* detect multicast address */ + if (remote && remote->type == SOCKET_ADDRESS_TYPE_INET) { + struct sockaddr_in mcastaddr; + + if (convert_host_port(&mcastaddr, remote->u.inet.host, + remote->u.inet.port, errp) < 0) { + return -1; + } + + if (IN_MULTICAST(ntohl(mcastaddr.sin_addr.s_addr))) { + return net_dgram_mcast_init(peer, model, name, remote, local, + errp); + } + } + /* unicast address */ + if (!local) { + error_setg(errp, "dgram requires local= parameter"); + return -1; + } + return net_dgram_udp_init(peer, model, name, remote, local, errp); +} + +int net_init_dgram(const Netdev *netdev, const char *name, + NetClientState *peer, Error **errp) +{ + const NetdevDgramOptions *sock; + + assert(netdev->type == NET_CLIENT_DRIVER_DGRAM); + sock = &netdev->u.dgram; + + return net_dgram_init(peer, "dgram", name, sock->remote, sock->local, + errp); +} diff --git a/net/hub.c b/net/hub.c index 1375738bf121..67ca53485638 100644 --- a/net/hub.c +++ b/net/hub.c @@ -313,6 +313,8 @@ void net_hub_check_clients(void) case NET_CLIENT_DRIVER_USER: case NET_CLIENT_DRIVER_TAP: case NET_CLIENT_DRIVER_SOCKET: + case NET_CLIENT_DRIVER_STREAM: + case NET_CLIENT_DRIVER_DGRAM: case NET_CLIENT_DRIVER_VDE: case NET_CLIENT_DRIVER_VHOST_USER: has_host_dev = 1; diff --git a/net/meson.build b/net/meson.build index 754e2d1d405c..896d86d43914 100644 --- a/net/meson.build +++ b/net/meson.build @@ -13,6 +13,8 @@ softmmu_ss.add(files( 'net.c', 'queue.c', 'socket.c', + 'stream.c', + 'dgram.c', 'util.c', )) diff --git a/net/net.c b/net/net.c index 531e6c5d2056..1295eb946b7a 100644 --- a/net/net.c +++ b/net/net.c @@ -48,6 +48,7 @@ #include "qemu/qemu-print.h" #include "qemu/main-loop.h" #include "qemu/option.h" +#include "qemu/keyval.h" #include "qapi/error.h" #include "qapi/opts-visitor.h" #include "sysemu/runstate.h" @@ -1014,6 +1015,8 @@ static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( #endif [NET_CLIENT_DRIVER_TAP] = net_init_tap, [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, + [NET_CLIENT_DRIVER_STREAM] = net_init_stream, + [NET_CLIENT_DRIVER_DGRAM] = net_init_dgram, #ifdef CONFIG_VDE [NET_CLIENT_DRIVER_VDE] = net_init_vde, #endif @@ -1101,6 +1104,8 @@ void show_netdevs(void) int idx; const char *available_netdevs[] = { "socket", + "stream", + "dgram", "hubport", "tap", #ifdef CONFIG_SLIRP @@ -1612,7 +1617,34 @@ void net_init_clients(void) */ bool netdev_is_modern(const char *optarg) { - return false; + QemuOpts *opts; + bool is_modern; + const char *type; + static QemuOptsList dummy_opts = { + .name = "netdev", + .implied_opt_name = "type", + .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), + .desc = { { } }, + }; + + if (optarg[0] == '{') { + /* + * detect JSON syntax. It is supported by + * qobject_input_visitor_new_str() (modern style syntax) + * but not by qemu_opts_parse_noisily() (old style syntax) + */ + return true; + } + + opts = qemu_opts_create(&dummy_opts, NULL, false, &error_abort); + qemu_opts_do_parse(opts, optarg, dummy_opts.implied_opt_name, + &error_abort); + type = qemu_opt_get(opts, "type"); + is_modern = !g_strcmp0(type, "stream") || !g_strcmp0(type, "dgram"); + + qemu_opts_reset(&dummy_opts); + + return is_modern; } /* diff --git a/net/stream.c b/net/stream.c new file mode 100644 index 000000000000..0d012ed8f785 --- /dev/null +++ b/net/stream.c @@ -0,0 +1,426 @@ +/* + * QEMU System Emulator + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" + +#include "net/net.h" +#include "clients.h" +#include "monitor/monitor.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "qemu/option.h" +#include "qemu/sockets.h" +#include "qemu/iov.h" +#include "qemu/main-loop.h" +#include "qemu/cutils.h" + +typedef struct NetStreamState { + NetClientState nc; + int listen_fd; + int fd; + SocketReadState rs; + unsigned int send_index; /* number of bytes sent*/ + IOHandler *send_fn; + bool read_poll; /* waiting to receive data? */ + bool write_poll; /* waiting to transmit data? */ +} NetStreamState; + +static void net_stream_accept(void *opaque); +static void net_stream_writable(void *opaque); + +static void net_stream_update_fd_handler(NetStreamState *s) +{ + qemu_set_fd_handler(s->fd, + s->read_poll ? s->send_fn : NULL, + s->write_poll ? net_stream_writable : NULL, + s); +} + +static void net_stream_read_poll(NetStreamState *s, bool enable) +{ + s->read_poll = enable; + net_stream_update_fd_handler(s); +} + +static void net_stream_write_poll(NetStreamState *s, bool enable) +{ + s->write_poll = enable; + net_stream_update_fd_handler(s); +} + +static void net_stream_writable(void *opaque) +{ + NetStreamState *s = opaque; + + net_stream_write_poll(s, false); + + qemu_flush_queued_packets(&s->nc); +} + +static ssize_t net_stream_receive(NetClientState *nc, const uint8_t *buf, + size_t size) +{ + NetStreamState *s = DO_UPCAST(NetStreamState, nc, nc); + uint32_t len = htonl(size); + struct iovec iov[] = { + { + .iov_base = &len, + .iov_len = sizeof(len), + }, { + .iov_base = (void *)buf, + .iov_len = size, + }, + }; + size_t remaining; + ssize_t ret; + + remaining = iov_size(iov, 2) - s->send_index; + ret = iov_send(s->fd, iov, 2, s->send_index, remaining); + + if (ret == -1 && errno == EAGAIN) { + ret = 0; /* handled further down */ + } + if (ret == -1) { + s->send_index = 0; + return -errno; + } + if (ret < (ssize_t)remaining) { + s->send_index += ret; + net_stream_write_poll(s, true); + return 0; + } + s->send_index = 0; + return size; +} + +static void net_stream_send_completed(NetClientState *nc, ssize_t len) +{ + NetStreamState *s = DO_UPCAST(NetStreamState, nc, nc); + + if (!s->read_poll) { + net_stream_read_poll(s, true); + } +} + +static void net_stream_rs_finalize(SocketReadState *rs) +{ + NetStreamState *s = container_of(rs, NetStreamState, rs); + + if (qemu_send_packet_async(&s->nc, rs->buf, + rs->packet_len, + net_stream_send_completed) == 0) { + net_stream_read_poll(s, false); + } +} + +static void net_stream_send(void *opaque) +{ + NetStreamState *s = opaque; + int size; + int ret; + uint8_t buf1[NET_BUFSIZE]; + const uint8_t *buf; + + size = recv(s->fd, buf1, sizeof(buf1), 0); + if (size < 0) { + if (errno != EWOULDBLOCK) { + goto eoc; + } + } else if (size == 0) { + /* end of connection */ + eoc: + net_stream_read_poll(s, false); + net_stream_write_poll(s, false); + if (s->listen_fd != -1) { + qemu_set_fd_handler(s->listen_fd, net_stream_accept, NULL, s); + } + closesocket(s->fd); + + s->fd = -1; + net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); + s->nc.link_down = true; + memset(s->nc.info_str, 0, sizeof(s->nc.info_str)); + + return; + } + buf = buf1; + + ret = net_fill_rstate(&s->rs, buf, size); + + if (ret == -1) { + goto eoc; + } +} + +static void net_stream_cleanup(NetClientState *nc) +{ + NetStreamState *s = DO_UPCAST(NetStreamState, nc, nc); + if (s->fd != -1) { + net_stream_read_poll(s, false); + net_stream_write_poll(s, false); + close(s->fd); + s->fd = -1; + } + if (s->listen_fd != -1) { + qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); + closesocket(s->listen_fd); + s->listen_fd = -1; + } +} + +static void net_stream_connect(void *opaque) +{ + NetStreamState *s = opaque; + s->send_fn = net_stream_send; + net_stream_read_poll(s, true); +} + +static NetClientInfo net_stream_info = { + .type = NET_CLIENT_DRIVER_STREAM, + .size = sizeof(NetStreamState), + .receive = net_stream_receive, + .cleanup = net_stream_cleanup, +}; + +static NetStreamState *net_stream_fd_init_stream(NetClientState *peer, + const char *model, + const char *name, + int fd, int is_connected) +{ + NetClientState *nc; + NetStreamState *s; + + nc = qemu_new_net_client(&net_stream_info, peer, model, name); + + snprintf(nc->info_str, sizeof(nc->info_str), "fd=%d", fd); + + s = DO_UPCAST(NetStreamState, nc, nc); + + s->fd = fd; + s->listen_fd = -1; + net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); + + /* Disable Nagle algorithm on TCP sockets to reduce latency */ + socket_set_nodelay(fd); + + if (is_connected) { + net_stream_connect(s); + } else { + qemu_set_fd_handler(s->fd, NULL, net_stream_connect, s); + } + return s; +} + +static void net_stream_accept(void *opaque) +{ + NetStreamState *s = opaque; + struct sockaddr_in saddr; + socklen_t len; + int fd; + + for (;;) { + len = sizeof(saddr); + fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); + if (fd < 0 && errno != EINTR) { + return; + } else if (fd >= 0) { + qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); + break; + } + } + + s->fd = fd; + s->nc.link_down = false; + net_stream_connect(s); + snprintf(s->nc.info_str, sizeof(s->nc.info_str), + "connection from %s:%d", + inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); +} + +static int net_stream_server_init(NetClientState *peer, + const char *model, + const char *name, + SocketAddress *addr, + Error **errp) +{ + NetClientState *nc; + NetStreamState *s; + int fd, ret; + + switch (addr->type) { + case SOCKET_ADDRESS_TYPE_INET: { + struct sockaddr_in saddr_in; + + if (convert_host_port(&saddr_in, addr->u.inet.host, addr->u.inet.port, + errp) < 0) { + return -1; + } + + fd = qemu_socket(PF_INET, SOCK_STREAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create stream socket"); + return -1; + } + qemu_socket_set_nonblock(fd); + + socket_set_fast_reuse(fd); + + ret = bind(fd, (struct sockaddr *)&saddr_in, sizeof(saddr_in)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't bind ip=%s to socket", + inet_ntoa(saddr_in.sin_addr)); + closesocket(fd); + return -1; + } + break; + } + case SOCKET_ADDRESS_TYPE_UNIX: { + error_setg(errp, "only support inet type"); + return -1; + } + case SOCKET_ADDRESS_TYPE_FD: + fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); + if (fd == -1) { + return -1; + } + ret = qemu_socket_try_set_nonblock(fd); + if (ret < 0) { + error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", + name, fd); + return -1; + } + break; + default: + g_assert_not_reached(); + } + + ret = listen(fd, 0); + if (ret < 0) { + error_setg_errno(errp, errno, "can't listen on socket"); + closesocket(fd); + return -1; + } + + nc = qemu_new_net_client(&net_stream_info, peer, model, name); + s = DO_UPCAST(NetStreamState, nc, nc); + s->fd = -1; + s->listen_fd = fd; + s->nc.link_down = true; + net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); + + qemu_set_fd_handler(s->listen_fd, net_stream_accept, NULL, s); + return 0; +} + +static int net_stream_client_init(NetClientState *peer, + const char *model, + const char *name, + SocketAddress *addr, + Error **errp) +{ + NetStreamState *s; + int fd, connected, ret; + gchar *info_str; + + switch (addr->type) { + case SOCKET_ADDRESS_TYPE_INET: { + struct sockaddr_in saddr_in; + + if (convert_host_port(&saddr_in, addr->u.inet.host, addr->u.inet.port, + errp) < 0) { + return -1; + } + + fd = qemu_socket(PF_INET, SOCK_STREAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create stream socket"); + return -1; + } + qemu_socket_set_nonblock(fd); + + connected = 0; + for (;;) { + ret = connect(fd, (struct sockaddr *)&saddr_in, sizeof(saddr_in)); + if (ret < 0) { + if (errno == EINTR || errno == EWOULDBLOCK) { + /* continue */ + } else if (errno == EINPROGRESS || + errno == EALREADY || + errno == EINVAL) { + break; + } else { + error_setg_errno(errp, errno, "can't connect socket"); + closesocket(fd); + return -1; + } + } else { + connected = 1; + break; + } + } + info_str = g_strdup_printf("connect to %s:%d", + inet_ntoa(saddr_in.sin_addr), + ntohs(saddr_in.sin_port)); + break; + } + case SOCKET_ADDRESS_TYPE_FD: + fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); + if (fd == -1) { + return -1; + } + ret = qemu_socket_try_set_nonblock(fd); + if (ret < 0) { + error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", + name, fd); + return -1; + } + connected = 1; + info_str = g_strdup_printf("connect to fd %d", fd); + break; + default: + error_setg(errp, "only support inet or fd type"); + return -1; + } + + s = net_stream_fd_init_stream(peer, model, name, fd, connected); + + pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str); + g_free(info_str); + + return 0; +} + +int net_init_stream(const Netdev *netdev, const char *name, + NetClientState *peer, Error **errp) +{ + const NetdevStreamOptions *sock; + + assert(netdev->type == NET_CLIENT_DRIVER_STREAM); + sock = &netdev->u.stream; + + if (!sock->has_server || sock->server) { + return net_stream_server_init(peer, "stream", name, sock->addr, errp); + } + return net_stream_client_init(peer, "stream", name, sock->addr, errp); +} diff --git a/qapi/net.json b/qapi/net.json index d6f7cfd4d656..32a9b1a5ac6c 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -7,6 +7,7 @@ ## { 'include': 'common.json' } +{ 'include': 'sockets.json' } ## # @set_link: @@ -566,6 +567,42 @@ '*isolated': 'bool' }, 'if': 'CONFIG_VMNET' } +## +# @NetdevStreamOptions: +# +# Configuration info for stream socket netdev +# +# @addr: socket address to listen on (server=true) +# or connect to (server=false) +# @server: create server socket (default: true) +# +# Since: 7.1 +## +{ 'struct': 'NetdevStreamOptions', + 'data': { + 'addr': 'SocketAddress', + '*server': 'bool' } } + +## +# @NetdevDgramOptions: +# +# Configuration info for datagram socket netdev. +# +# @remote: remote address +# @local: local address +# +# The code checks there is at least one of these options and reports an error +# if not. If remote address is present and it's a multicast address, local +# address is optional. Otherwise local address is required and remote address +# is optional. +# +# Since: 7.1 +## +{ 'struct': 'NetdevDgramOptions', + 'data': { + '*local': 'SocketAddress', + '*remote': 'SocketAddress' } } + ## # @NetClientDriver: # @@ -579,8 +616,9 @@ # @vmnet-bridged since 7.1 ## { 'enum': 'NetClientDriver', - 'data': [ 'none', 'nic', 'user', 'tap', 'l2tpv3', 'socket', 'vde', - 'bridge', 'hubport', 'netmap', 'vhost-user', 'vhost-vdpa', + 'data': [ 'none', 'nic', 'user', 'tap', 'l2tpv3', 'socket', 'stream', + 'dgram', 'vde', 'bridge', 'hubport', 'netmap', 'vhost-user', + 'vhost-vdpa', { 'name': 'vmnet-host', 'if': 'CONFIG_VMNET' }, { 'name': 'vmnet-shared', 'if': 'CONFIG_VMNET' }, { 'name': 'vmnet-bridged', 'if': 'CONFIG_VMNET' }] } @@ -610,6 +648,8 @@ 'tap': 'NetdevTapOptions', 'l2tpv3': 'NetdevL2TPv3Options', 'socket': 'NetdevSocketOptions', + 'stream': 'NetdevStreamOptions', + 'dgram': 'NetdevDgramOptions', 'vde': 'NetdevVdeOptions', 'bridge': 'NetdevBridgeOptions', 'hubport': 'NetdevHubPortOptions', diff --git a/qemu-options.hx b/qemu-options.hx index 377d22fbd82f..03d58da6f8ed 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2722,6 +2722,18 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev, "-netdev socket,id=str[,fd=h][,udp=host:port][,localaddr=host:port]\n" " configure a network backend to connect to another network\n" " using an UDP tunnel\n" + "-netdev stream,id=str[,server=on|off],addr.type=inet,addr.host=host,addr.port=port\n" + "-netdev stream,id=str[,server=on|off],addr.type=fd,addr.str=h\n" + " configure a network backend to connect to another network\n" + " using a socket connection in stream mode.\n" + "-netdev dgram,id=str,remote.type=inet,remote.host=maddr,remote.port=port[,local.type=inet,local.host=addr]\n" + "-netdev dgram,id=str,remote.type=inet,remote.host=maddr,remote.port=port[,local.type=fd,local.str=h]\n" + " configure a network backend to connect to a multicast maddr and port\n" + " use 'local.host=addr' to specify the host address to send packets from\n" + "-netdev dgram,id=str,local.type=inet,local.host=host,local.port=port[,remote.type=inet,remote.host=host,remote.port=port]\n" + "-netdev dgram,id=str,local.type=fd,local.str=h\n" + " configure a network backend to connect to another network\n" + " using an UDP tunnel\n" #ifdef CONFIG_VDE "-netdev vde,id=str[,sock=socketpath][,port=n][,group=groupname][,mode=octalmode]\n" " configure a network backend to connect to port 'n' of a vde switch\n" From patchwork Thu Jun 23 15:53:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892873 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 49738C43334 for ; Thu, 23 Jun 2022 15:58:07 +0000 (UTC) Received: from localhost ([::1]:58880 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4PDa-00057L-7c for qemu-devel@archiver.kernel.org; Thu, 23 Jun 2022 11:58:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46156) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4P9C-0005Nm-Ou for qemu-devel@nongnu.org; Thu, 23 Jun 2022 11:53:34 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:36718) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4P9B-00051T-7A for qemu-devel@nongnu.org; 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Thu, 23 Jun 2022 15:53:30 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2FB6FC2811A; Thu, 23 Jun 2022 15:53:29 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Stefano Brivio , Laurent Vivier Subject: [RFC PATCH v4 05/11] net: stream: Don't ignore EINVAL on netdev socket connection Date: Thu, 23 Jun 2022 17:53:11 +0200 Message-Id: <20220623155317.675932-6-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.129.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Stefano Brivio Other errors are treated as failure by net_stream_client_init(), but if connect() returns EINVAL, we'll fail silently. Remove the related exception. Signed-off-by: Stefano Brivio [lvivier: applied to net/stream.c] Signed-off-by: Laurent Vivier Reviewed-by: Daniel P. Berrangé --- net/stream.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/stream.c b/net/stream.c index 0d012ed8f785..d991fe3ac2b9 100644 --- a/net/stream.c +++ b/net/stream.c @@ -366,8 +366,7 @@ static int net_stream_client_init(NetClientState *peer, if (errno == EINTR || errno == EWOULDBLOCK) { /* continue */ } else if (errno == EINPROGRESS || - errno == EALREADY || - errno == EINVAL) { + errno == EALREADY) { break; } else { error_setg_errno(errp, errno, "can't connect socket"); From patchwork Thu Jun 23 15:53:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892872 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 24A34C43334 for ; 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envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio --- net/stream.c | 106 +++++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 99 insertions(+), 7 deletions(-) diff --git a/net/stream.c b/net/stream.c index d991fe3ac2b9..7df3bb2691a8 100644 --- a/net/stream.c +++ b/net/stream.c @@ -235,7 +235,7 @@ static NetStreamState *net_stream_fd_init_stream(NetClientState *peer, static void net_stream_accept(void *opaque) { NetStreamState *s = opaque; - struct sockaddr_in saddr; + struct sockaddr_storage saddr; socklen_t len; int fd; @@ -253,9 +253,27 @@ static void net_stream_accept(void *opaque) s->fd = fd; s->nc.link_down = false; net_stream_connect(s); - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "connection from %s:%d", - inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + switch (saddr.ss_family) { + case AF_INET: { + struct sockaddr_in *saddr_in = (struct sockaddr_in *)&saddr; + + snprintf(s->nc.info_str, sizeof(s->nc.info_str), + "connection from %s:%d", + inet_ntoa(saddr_in->sin_addr), ntohs(saddr_in->sin_port)); + break; + } + case AF_UNIX: { + struct sockaddr_un saddr_un; + + len = sizeof(saddr_un); + getsockname(s->listen_fd, (struct sockaddr *)&saddr_un, &len); + snprintf(s->nc.info_str, sizeof(s->nc.info_str), + "connect from %s", saddr_un.sun_path); + break; + } + default: + g_assert_not_reached(); + } } static int net_stream_server_init(NetClientState *peer, @@ -296,8 +314,40 @@ static int net_stream_server_init(NetClientState *peer, break; } case SOCKET_ADDRESS_TYPE_UNIX: { - error_setg(errp, "only support inet type"); - return -1; + struct sockaddr_un saddr_un; + + ret = unlink(addr->u.q_unix.path); + if (ret < 0 && errno != ENOENT) { + error_setg_errno(errp, errno, "failed to unlink socket %s", + addr->u.q_unix.path); + return -1; + } + + saddr_un.sun_family = PF_UNIX; + ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s", + addr->u.q_unix.path); + if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + addr->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(saddr_un.sun_path)); + } + + fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create stream socket"); + return -1; + } + qemu_socket_set_nonblock(fd); + + ret = bind(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't create socket with path: %s", + saddr_un.sun_path); + closesocket(fd); + return -1; + } + break; } case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); @@ -383,6 +433,48 @@ static int net_stream_client_init(NetClientState *peer, ntohs(saddr_in.sin_port)); break; } + case SOCKET_ADDRESS_TYPE_UNIX: { + struct sockaddr_un saddr_un; + + saddr_un.sun_family = PF_UNIX; + ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s", + addr->u.q_unix.path); + if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + addr->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(saddr_un.sun_path)); + } + + fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create stream socket"); + return -1; + } + qemu_socket_set_nonblock(fd); + + connected = 0; + for (;;) { + ret = connect(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un)); + if (ret < 0) { + if (errno == EINTR || errno == EWOULDBLOCK) { + /* continue */ + } else if (errno == EAGAIN || + errno == EALREADY) { + break; + } else { + error_setg_errno(errp, errno, "can't connect socket"); + closesocket(fd); + return -1; + } + } else { + connected = 1; + break; + } + } + info_str = g_strdup_printf(" connect to %s", saddr_un.sun_path); + break; + } case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); if (fd == -1) { @@ -398,7 +490,7 @@ static int net_stream_client_init(NetClientState *peer, info_str = g_strdup_printf("connect to fd %d", fd); break; default: - error_setg(errp, "only support inet or fd type"); + error_setg(errp, "only support inet, unix or fd type"); return -1; } From patchwork Thu Jun 23 15:53:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892904 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A4038C433EF for ; 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bh=bZkAbFiM4rMcNOI/hni5DjyYPrcM9wbOYbL0LOGOh10=; b=edJrN6cO/a4UcS/HJI5dmgWv/guobuXuXtWr7zaoxnjD122ym03DWv8bTk4D2sStg2weE1 kNoj2ittWUgQZJuCYQUiAT55DDQnzTsGfrqRkf56g/I500Qh5aeIcBTdo0CAkqhFYO2D9O ULIoxc62numqulqCH5bkgC5lN1/8qDs= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-156-j5AZjGIXM8qCEARUVTykZA-1; Thu, 23 Jun 2022 11:53:35 -0400 X-MC-Unique: j5AZjGIXM8qCEARUVTykZA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A7A5A1C068E3 for ; Thu, 23 Jun 2022 15:53:34 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id 11C43C2810D; Thu, 23 Jun 2022 15:53:32 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Laurent Vivier , Stefano Brivio Subject: [RFC PATCH v4 07/11] net: dgram: make dgram_dst generic Date: Thu, 23 Jun 2022 17:53:13 +0200 Message-Id: <20220623155317.675932-8-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.133.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" dgram_dst is a sockaddr_in structure. To be able to use it with unix socket, use a pointer to a generic sockaddr structure. Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio --- net/dgram.c | 76 +++++++++++++++++++++++++++++++---------------------- 1 file changed, 45 insertions(+), 31 deletions(-) diff --git a/net/dgram.c b/net/dgram.c index dbe65102d174..dcc2205305c5 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -40,9 +40,8 @@ typedef struct NetDgramState { int listen_fd; int fd; SocketReadState rs; - /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ - struct sockaddr_in dgram_dst; - IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */ + struct sockaddr *dgram_dst; /* contains destination iff connectionless */ + IOHandler *send_fn; bool read_poll; /* waiting to receive data? */ bool write_poll; /* waiting to transmit data? */ } NetDgramState; @@ -86,10 +85,9 @@ static ssize_t net_dgram_receive_dgram(NetClientState *nc, ssize_t ret; do { - if (s->dgram_dst.sin_family != AF_UNIX) { - ret = sendto(s->fd, buf, size, 0, - (struct sockaddr *)&s->dgram_dst, - sizeof(s->dgram_dst)); + if (s->dgram_dst) { + ret = sendto(s->fd, buf, size, 0, s->dgram_dst, + sizeof(struct sockaddr_in)); } else { ret = send(s->fd, buf, size, 0); } @@ -290,6 +288,8 @@ static void net_dgram_cleanup(NetClientState *nc) closesocket(s->listen_fd); s->listen_fd = -1; } + g_free(s->dgram_dst); + s->dgram_dst = NULL; } static NetClientInfo net_dgram_socket_info = { @@ -306,7 +306,7 @@ static NetDgramState *net_dgram_fd_init_dgram(NetClientState *peer, SocketAddress *mcast, Error **errp) { - struct sockaddr_in saddr; + struct sockaddr_in *saddr = NULL; int newfd; NetClientState *nc; NetDgramState *s; @@ -328,24 +328,25 @@ static NetDgramState *net_dgram_fd_init_dgram(NetClientState *peer, */ if (is_fd && mcast != NULL) { - if (convert_host_port(&saddr, mcast->u.inet.host, - mcast->u.inet.port, errp) < 0) { + saddr = g_new(struct sockaddr_in, 1); + + if (convert_host_port(saddr, mcast->u.inet.host, mcast->u.inet.port, + errp) < 0) { goto err; } /* must be bound */ - if (saddr.sin_addr.s_addr == 0) { + if (saddr->sin_addr.s_addr == 0) { error_setg(errp, "can't setup multicast destination address"); goto err; } /* clone dgram socket */ - newfd = net_dgram_mcast_create(&saddr, NULL, errp); + newfd = net_dgram_mcast_create(saddr, NULL, errp); if (newfd < 0) { goto err; } /* clone newfd to fd, close newfd */ dup2(newfd, fd); close(newfd); - } nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); @@ -359,16 +360,13 @@ static NetDgramState *net_dgram_fd_init_dgram(NetClientState *peer, net_dgram_read_poll(s, true); /* mcast: save bound address as dst */ - if (is_fd && mcast != NULL) { - s->dgram_dst = saddr; + if (saddr) { + g_assert(s->dgram_dst == NULL); + s->dgram_dst = (struct sockaddr *)saddr; snprintf(nc->info_str, sizeof(nc->info_str), "fd=%d (cloned mcast=%s:%d)", - fd, inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + fd, inet_ntoa(saddr->sin_addr), ntohs(saddr->sin_port)); } else { - if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { - s->dgram_dst.sin_family = AF_UNIX; - } - snprintf(nc->info_str, sizeof(nc->info_str), "fd=%d %s", fd, SocketAddressType_str(sa_type)); } @@ -376,6 +374,7 @@ static NetDgramState *net_dgram_fd_init_dgram(NetClientState *peer, return s; err: + g_free(saddr); closesocket(fd); return NULL; } @@ -421,21 +420,24 @@ static int net_dgram_mcast_init(NetClientState *peer, { NetDgramState *s; int fd, ret; - struct sockaddr_in saddr; + struct sockaddr_in *saddr; if (remote->type != SOCKET_ADDRESS_TYPE_INET) { error_setg(errp, "multicast only support inet type"); return -1; } - if (convert_host_port(&saddr, remote->u.inet.host, remote->u.inet.port, + saddr = g_new(struct sockaddr_in, 1); + if (convert_host_port(saddr, remote->u.inet.host, remote->u.inet.port, errp) < 0) { + g_free(saddr); return -1; } if (!local) { - fd = net_dgram_mcast_create(&saddr, NULL, errp); + fd = net_dgram_mcast_create(saddr, NULL, errp); if (fd < 0) { + g_free(saddr); return -1; } } else { @@ -444,13 +446,15 @@ static int net_dgram_mcast_init(NetClientState *peer, struct in_addr localaddr; if (inet_aton(local->u.inet.host, &localaddr) == 0) { + g_free(saddr); error_setg(errp, "localaddr '%s' is not a valid IPv4 address", local->u.inet.host); return -1; } - fd = net_dgram_mcast_create(&saddr, &localaddr, errp); + fd = net_dgram_mcast_create(saddr, &localaddr, errp); if (fd < 0) { + g_free(saddr); return -1; } break; @@ -458,16 +462,19 @@ static int net_dgram_mcast_init(NetClientState *peer, case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); if (fd == -1) { + g_free(saddr); return -1; } ret = qemu_socket_try_set_nonblock(fd); if (ret < 0) { + g_free(saddr); error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", name, fd); return -1; } break; default: + g_free(saddr); error_setg(errp, "only support inet or fd type for local"); return -1; } @@ -477,13 +484,16 @@ static int net_dgram_mcast_init(NetClientState *peer, local->type == SOCKET_ADDRESS_TYPE_FD, remote, errp); if (!s) { + g_free(saddr); return -1; } - s->dgram_dst = saddr; + g_assert(s->dgram_dst == NULL); + s->dgram_dst = (struct sockaddr *)saddr; snprintf(s->nc.info_str, sizeof(s->nc.info_str), "mcast=%s:%d", - inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + inet_ntoa(saddr->sin_addr), ntohs(saddr->sin_port)); + return 0; } @@ -497,8 +507,8 @@ static int net_dgram_udp_init(NetClientState *peer, { NetDgramState *s; int fd, ret; - struct sockaddr_in raddr_in; gchar *info_str; + struct sockaddr *dgram_dst; if (remote) { if (local->type == SOCKET_ADDRESS_TYPE_FD) { @@ -518,7 +528,7 @@ static int net_dgram_udp_init(NetClientState *peer, switch (local->type) { case SOCKET_ADDRESS_TYPE_INET: { - struct sockaddr_in laddr_in; + struct sockaddr_in laddr_in, raddr_in; if (convert_host_port(&laddr_in, local->u.inet.host, local->u.inet.port, errp) < 0) { @@ -552,9 +562,12 @@ static int net_dgram_udp_init(NetClientState *peer, } qemu_socket_set_nonblock(fd); + dgram_dst = g_malloc(sizeof(raddr_in)); + memcpy(dgram_dst, &raddr_in, sizeof(raddr_in)); + info_str = g_strdup_printf("udp=%s:%d/%s:%d", - inet_ntoa(laddr_in.sin_addr), ntohs(laddr_in.sin_port), - inet_ntoa(raddr_in.sin_addr), ntohs(raddr_in.sin_port)); + inet_ntoa(laddr_in.sin_addr), ntohs(laddr_in.sin_port), + inet_ntoa(raddr_in.sin_addr), ntohs(raddr_in.sin_port)); break; } @@ -581,7 +594,8 @@ static int net_dgram_udp_init(NetClientState *peer, } if (remote) { - s->dgram_dst = raddr_in; + g_assert(s->dgram_dst == NULL); + s->dgram_dst = dgram_dst; pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str); g_free(info_str); From patchwork Thu Jun 23 15:53:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892877 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1FD57C43334 for ; Thu, 23 Jun 2022 16:02:55 +0000 (UTC) Received: from localhost ([::1]:39504 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4PIE-0002j4-0G for qemu-devel@archiver.kernel.org; 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Thu, 23 Jun 2022 11:53:36 -0400 X-MC-Unique: kkH05_-OOvaV0T_ci1MfYA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 97B3380057A for ; Thu, 23 Jun 2022 15:53:36 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id F17B9C2810D; Thu, 23 Jun 2022 15:53:34 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Laurent Vivier , Stefano Brivio Subject: [RFC PATCH v4 08/11] net: dgram: move mcast specific code from net_socket_fd_init_dgram() Date: Thu, 23 Jun 2022 17:53:14 +0200 Message-Id: <20220623155317.675932-9-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.133.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" It is less complex to manage special cases directly in net_dgram_mcast_init() and net_dgram_udp_init(). Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio --- net/dgram.c | 143 +++++++++++++++++++++++++++------------------------- 1 file changed, 73 insertions(+), 70 deletions(-) diff --git a/net/dgram.c b/net/dgram.c index dcc2205305c5..16e2d909755c 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -302,52 +302,11 @@ static NetClientInfo net_dgram_socket_info = { static NetDgramState *net_dgram_fd_init_dgram(NetClientState *peer, const char *model, const char *name, - int fd, int is_fd, - SocketAddress *mcast, + int fd, Error **errp) { - struct sockaddr_in *saddr = NULL; - int newfd; NetClientState *nc; NetDgramState *s; - SocketAddress *sa; - SocketAddressType sa_type; - - sa = socket_local_address(fd, errp); - if (!sa) { - return NULL; - } - sa_type = sa->type; - qapi_free_SocketAddress(sa); - - /* - * fd passed: multicast: "learn" dgram_dst address from bound address and - * save it. Because this may be "shared" socket from a "master" process, - * datagrams would be recv() by ONLY ONE process: we must "clone" this - * dgram socket --jjo - */ - - if (is_fd && mcast != NULL) { - saddr = g_new(struct sockaddr_in, 1); - - if (convert_host_port(saddr, mcast->u.inet.host, mcast->u.inet.port, - errp) < 0) { - goto err; - } - /* must be bound */ - if (saddr->sin_addr.s_addr == 0) { - error_setg(errp, "can't setup multicast destination address"); - goto err; - } - /* clone dgram socket */ - newfd = net_dgram_mcast_create(saddr, NULL, errp); - if (newfd < 0) { - goto err; - } - /* clone newfd to fd, close newfd */ - dup2(newfd, fd); - close(newfd); - } nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); @@ -359,24 +318,7 @@ static NetDgramState *net_dgram_fd_init_dgram(NetClientState *peer, net_socket_rs_init(&s->rs, net_dgram_rs_finalize, false); net_dgram_read_poll(s, true); - /* mcast: save bound address as dst */ - if (saddr) { - g_assert(s->dgram_dst == NULL); - s->dgram_dst = (struct sockaddr *)saddr; - snprintf(nc->info_str, sizeof(nc->info_str), - "fd=%d (cloned mcast=%s:%d)", - fd, inet_ntoa(saddr->sin_addr), ntohs(saddr->sin_port)); - } else { - snprintf(nc->info_str, sizeof(nc->info_str), "fd=%d %s", fd, - SocketAddressType_str(sa_type)); - } - return s; - -err: - g_free(saddr); - closesocket(fd); - return NULL; } static void net_dgram_connect(void *opaque) @@ -421,6 +363,7 @@ static int net_dgram_mcast_init(NetClientState *peer, NetDgramState *s; int fd, ret; struct sockaddr_in *saddr; + gchar *info_str; if (remote->type != SOCKET_ADDRESS_TYPE_INET) { error_setg(errp, "multicast only support inet type"); @@ -440,6 +383,9 @@ static int net_dgram_mcast_init(NetClientState *peer, g_free(saddr); return -1; } + info_str = g_strdup_printf("mcast=%s:%d", + inet_ntoa(saddr->sin_addr), + ntohs(saddr->sin_port)); } else { switch (local->type) { case SOCKET_ADDRESS_TYPE_INET: { @@ -457,9 +403,14 @@ static int net_dgram_mcast_init(NetClientState *peer, g_free(saddr); return -1; } + info_str = g_strdup_printf("mcast=%s:%d", + inet_ntoa(saddr->sin_addr), + ntohs(saddr->sin_port)); break; } - case SOCKET_ADDRESS_TYPE_FD: + case SOCKET_ADDRESS_TYPE_FD: { + int newfd; + fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); if (fd == -1) { g_free(saddr); @@ -472,7 +423,46 @@ static int net_dgram_mcast_init(NetClientState *peer, name, fd); return -1; } + + /* + * fd passed: multicast: "learn" dgram_dst address from bound + * address and save it. Because this may be "shared" socket from a + * "master" process, datagrams would be recv() by ONLY ONE process: + * we must "clone" this dgram socket --jjo + */ + + saddr = g_new(struct sockaddr_in, 1); + + if (convert_host_port(saddr, local->u.inet.host, local->u.inet.port, + errp) < 0) { + g_free(saddr); + closesocket(fd); + return -1; + } + + /* must be bound */ + if (saddr->sin_addr.s_addr == 0) { + error_setg(errp, "can't setup multicast destination address"); + g_free(saddr); + closesocket(fd); + return -1; + } + /* clone dgram socket */ + newfd = net_dgram_mcast_create(saddr, NULL, errp); + if (newfd < 0) { + g_free(saddr); + closesocket(fd); + return -1; + } + /* clone newfd to fd, close newfd */ + dup2(newfd, fd); + close(newfd); + + info_str = g_strdup_printf("fd=%d (cloned mcast=%s:%d)", + fd, inet_ntoa(saddr->sin_addr), + ntohs(saddr->sin_port)); break; + } default: g_free(saddr); error_setg(errp, "only support inet or fd type for local"); @@ -480,9 +470,7 @@ static int net_dgram_mcast_init(NetClientState *peer, } } - s = net_dgram_fd_init_dgram(peer, model, name, fd, - local->type == SOCKET_ADDRESS_TYPE_FD, - remote, errp); + s = net_dgram_fd_init_dgram(peer, model, name, fd, errp); if (!s) { g_free(saddr); return -1; @@ -491,8 +479,8 @@ static int net_dgram_mcast_init(NetClientState *peer, g_assert(s->dgram_dst == NULL); s->dgram_dst = (struct sockaddr *)saddr; - snprintf(s->nc.info_str, sizeof(s->nc.info_str), "mcast=%s:%d", - inet_ntoa(saddr->sin_addr), ntohs(saddr->sin_port)); + pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str); + g_free(info_str); return 0; @@ -571,7 +559,10 @@ static int net_dgram_udp_init(NetClientState *peer, break; } - case SOCKET_ADDRESS_TYPE_FD: + case SOCKET_ADDRESS_TYPE_FD: { + SocketAddress *sa; + SocketAddressType sa_type; + fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); if (fd == -1) { return -1; @@ -582,23 +573,35 @@ static int net_dgram_udp_init(NetClientState *peer, name, fd); return -1; } + + sa = socket_local_address(fd, errp); + if (sa) { + sa_type = sa->type; + qapi_free_SocketAddress(sa); + + info_str = g_strdup_printf("fd=%d %s", fd, + SocketAddressType_str(sa_type)); + } else { + info_str = g_strdup_printf("fd=%d", fd); + } break; + } default: error_setg(errp, "only support inet or fd type for local"); return -1; } - s = net_dgram_fd_init_dgram(peer, model, name, fd, 0, NULL, errp); + s = net_dgram_fd_init_dgram(peer, model, name, fd, errp); if (!s) { return -1; } + pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str); + g_free(info_str); + if (remote) { g_assert(s->dgram_dst == NULL); s->dgram_dst = dgram_dst; - - pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str); - g_free(info_str); } return 0; } From patchwork Thu Jun 23 15:53:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892876 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 84782C433EF for ; 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envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio --- net/dgram.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 62 insertions(+), 3 deletions(-) diff --git a/net/dgram.c b/net/dgram.c index 16e2d909755c..9f3eafee3b67 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -86,8 +86,15 @@ static ssize_t net_dgram_receive_dgram(NetClientState *nc, do { if (s->dgram_dst) { - ret = sendto(s->fd, buf, size, 0, s->dgram_dst, - sizeof(struct sockaddr_in)); + socklen_t len; + + if (s->dgram_dst->sa_family == AF_INET) { + len = sizeof(struct sockaddr_in); + } else { + len = sizeof(struct sockaddr_un); + } + + ret = sendto(s->fd, buf, size, 0, s->dgram_dst, len); } else { ret = send(s->fd, buf, size, 0); } @@ -509,7 +516,7 @@ static int net_dgram_udp_init(NetClientState *peer, } } else { if (local->type != SOCKET_ADDRESS_TYPE_FD) { - error_setg(errp, "type=inet requires remote parameter"); + error_setg(errp, "type=inet or unix require remote parameter"); return -1; } } @@ -559,6 +566,58 @@ static int net_dgram_udp_init(NetClientState *peer, break; } + case SOCKET_ADDRESS_TYPE_UNIX: { + struct sockaddr_un laddr_un, raddr_un; + + ret = unlink(local->u.q_unix.path); + if (ret < 0 && errno != ENOENT) { + error_setg_errno(errp, errno, "failed to unlink socket %s", + local->u.q_unix.path); + return -1; + } + + laddr_un.sun_family = PF_UNIX; + ret = snprintf(laddr_un.sun_path, sizeof(laddr_un.sun_path), "%s", + local->u.q_unix.path); + if (ret < 0 || ret >= sizeof(laddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + local->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(laddr_un.sun_path)); + } + + raddr_un.sun_family = PF_UNIX; + ret = snprintf(raddr_un.sun_path, sizeof(raddr_un.sun_path), "%s", + remote->u.q_unix.path); + if (ret < 0 || ret >= sizeof(raddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + remote->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(raddr_un.sun_path)); + } + + fd = qemu_socket(PF_UNIX, SOCK_DGRAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create datagram socket"); + return -1; + } + + ret = bind(fd, (struct sockaddr *)&laddr_un, sizeof(laddr_un)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't bind unix=%s to socket", + laddr_un.sun_path); + closesocket(fd); + return -1; + } + qemu_socket_set_nonblock(fd); + + dgram_dst = g_malloc(sizeof(raddr_un)); + memcpy(dgram_dst, &raddr_un, sizeof(raddr_un)); + + info_str = g_strdup_printf("udp=%s:%s", + laddr_un.sun_path, raddr_un.sun_path); + break; + } case SOCKET_ADDRESS_TYPE_FD: { SocketAddress *sa; SocketAddressType sa_type; From patchwork Thu Jun 23 15:53:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892902 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 94550C43334 for ; Thu, 23 Jun 2022 16:09:05 +0000 (UTC) Received: from localhost ([::1]:48450 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4POC-0000ib-70 for qemu-devel@archiver.kernel.org; Thu, 23 Jun 2022 12:09:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46294) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4P9S-0005gp-44 for qemu-devel@nongnu.org; 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Thu, 23 Jun 2022 11:53:40 -0400 X-MC-Unique: h1XqgvrZPMGuXAYkTvCxRg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4059B8032ED for ; Thu, 23 Jun 2022 15:53:40 +0000 (UTC) Received: from thinkpad.redhat.com (unknown [10.39.193.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id C1F06C2810D; Thu, 23 Jun 2022 15:53:38 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Markus Armbruster , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Laurent Vivier Subject: [RFC PATCH v4 10/11] qemu-sockets: introduce socket_uri() Date: Thu, 23 Jun 2022 17:53:16 +0200 Message-Id: <20220623155317.675932-11-lvivier@redhat.com> In-Reply-To: <20220623155317.675932-1-lvivier@redhat.com> References: <20220623155317.675932-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Received-SPF: pass client-ip=170.10.129.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Format a string URI from a SocketAddress. Original code from hmp-cmds.c:SocketAddress_to_str() Replace 'tcp:' by 'inet:' (because 'inet' can be also 'udp'). Replace 'tcp:' by 'vsock:' with vsock socket type. Signed-off-by: Laurent Vivier --- include/qemu/sockets.h | 2 +- monitor/hmp-cmds.c | 23 +---------------------- util/qemu-sockets.c | 20 ++++++++++++++++++++ 3 files changed, 22 insertions(+), 23 deletions(-) diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h index 47194b9732f8..3e2ae7e21705 100644 --- a/include/qemu/sockets.h +++ b/include/qemu/sockets.h @@ -41,6 +41,7 @@ int unix_listen(const char *path, Error **errp); int unix_connect(const char *path, Error **errp); SocketAddress *socket_parse(const char *str, Error **errp); +char *socket_uri(SocketAddress *addr); int socket_connect(SocketAddress *addr, Error **errp); int socket_listen(SocketAddress *addr, int num, Error **errp); void socket_listen_cleanup(int fd, Error **errp); @@ -123,5 +124,4 @@ SocketAddress *socket_address_flatten(SocketAddressLegacy *addr); * Return 0 on success. */ int socket_address_parse_named_fd(SocketAddress *addr, Error **errp); - #endif /* QEMU_SOCKETS_H */ diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index 47a27326eef7..eb0fe0a293b8 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -197,27 +197,6 @@ void hmp_info_mice(Monitor *mon, const QDict *qdict) qapi_free_MouseInfoList(mice_list); } -static char *SocketAddress_to_str(SocketAddress *addr) -{ - switch (addr->type) { - case SOCKET_ADDRESS_TYPE_INET: - return g_strdup_printf("tcp:%s:%s", - addr->u.inet.host, - addr->u.inet.port); - case SOCKET_ADDRESS_TYPE_UNIX: - return g_strdup_printf("unix:%s", - addr->u.q_unix.path); - case SOCKET_ADDRESS_TYPE_FD: - return g_strdup_printf("fd:%s", addr->u.fd.str); - case SOCKET_ADDRESS_TYPE_VSOCK: - return g_strdup_printf("tcp:%s:%s", - addr->u.vsock.cid, - addr->u.vsock.port); - default: - return g_strdup("unknown address type"); - } -} - void hmp_info_migrate(Monitor *mon, const QDict *qdict) { MigrationInfo *info; @@ -375,7 +354,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict) monitor_printf(mon, "socket address: [\n"); for (addr = info->socket_address; addr; addr = addr->next) { - char *s = SocketAddress_to_str(addr->value); + char *s = socket_uri(addr->value); monitor_printf(mon, "\t%s\n", s); g_free(s); } diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index 13b5b197f9ea..4efc2ce8b074 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -1098,6 +1098,26 @@ int unix_connect(const char *path, Error **errp) return sock; } +char *socket_uri(SocketAddress *addr) +{ + switch (addr->type) { + case SOCKET_ADDRESS_TYPE_INET: + return g_strdup_printf("inet:%s:%s", + addr->u.inet.host, + addr->u.inet.port); + case SOCKET_ADDRESS_TYPE_UNIX: + return g_strdup_printf("unix:%s", + addr->u.q_unix.path); + case SOCKET_ADDRESS_TYPE_FD: + return g_strdup_printf("fd:%s", addr->u.fd.str); + case SOCKET_ADDRESS_TYPE_VSOCK: + return g_strdup_printf("vsock:%s:%s", + addr->u.vsock.cid, + addr->u.vsock.port); + default: + return g_strdup("unknown address type"); + } +} SocketAddress *socket_parse(const char *str, Error **errp) { From patchwork Thu Jun 23 15:53:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 12892903 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 75FE8CCA47C for ; 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envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Use QIOChannel, QIOChannelSocket and QIONetListener. Signed-off-by: Laurent Vivier --- net/stream.c | 475 ++++++++++++++++++--------------------------------- 1 file changed, 165 insertions(+), 310 deletions(-) diff --git a/net/stream.c b/net/stream.c index 7df3bb2691a8..6e9952c7c3ef 100644 --- a/net/stream.c +++ b/net/stream.c @@ -34,48 +34,36 @@ #include "qemu/iov.h" #include "qemu/main-loop.h" #include "qemu/cutils.h" +#include "io/channel.h" +#include "io/channel-socket.h" +#include "io/net-listener.h" typedef struct NetStreamState { NetClientState nc; - int listen_fd; - int fd; + QIOChannel *listen_ioc; + QIONetListener *listener; + QIOChannel *ioc; + guint ioc_read_tag; + guint ioc_write_tag; SocketReadState rs; unsigned int send_index; /* number of bytes sent*/ - IOHandler *send_fn; - bool read_poll; /* waiting to receive data? */ - bool write_poll; /* waiting to transmit data? */ } NetStreamState; -static void net_stream_accept(void *opaque); -static void net_stream_writable(void *opaque); +static void net_stream_listen(QIONetListener *listener, + QIOChannelSocket *cioc, + void *opaque); -static void net_stream_update_fd_handler(NetStreamState *s) +static gboolean net_stream_writable(QIOChannel *ioc, + GIOCondition condition, + gpointer data) { - qemu_set_fd_handler(s->fd, - s->read_poll ? s->send_fn : NULL, - s->write_poll ? net_stream_writable : NULL, - s); -} - -static void net_stream_read_poll(NetStreamState *s, bool enable) -{ - s->read_poll = enable; - net_stream_update_fd_handler(s); -} - -static void net_stream_write_poll(NetStreamState *s, bool enable) -{ - s->write_poll = enable; - net_stream_update_fd_handler(s); -} - -static void net_stream_writable(void *opaque) -{ - NetStreamState *s = opaque; + NetStreamState *s = data; - net_stream_write_poll(s, false); + s->ioc_write_tag = 0; qemu_flush_queued_packets(&s->nc); + + return G_SOURCE_REMOVE; } static ssize_t net_stream_receive(NetClientState *nc, const uint8_t *buf, @@ -92,12 +80,15 @@ static ssize_t net_stream_receive(NetClientState *nc, const uint8_t *buf, .iov_len = size, }, }; + struct iovec local_iov[2]; + unsigned int nlocal_iov; size_t remaining; ssize_t ret; - remaining = iov_size(iov, 2) - s->send_index; - ret = iov_send(s->fd, iov, 2, s->send_index, remaining); + remaining = iov_size(iov, 2) - s->send_index; + nlocal_iov = iov_copy(local_iov, 2, iov, 2, s->send_index, remaining); + ret = qio_channel_writev(s->ioc, local_iov, nlocal_iov, NULL); if (ret == -1 && errno == EAGAIN) { ret = 0; /* handled further down */ } @@ -107,19 +98,25 @@ static ssize_t net_stream_receive(NetClientState *nc, const uint8_t *buf, } if (ret < (ssize_t)remaining) { s->send_index += ret; - net_stream_write_poll(s, true); + s->ioc_write_tag = qio_channel_add_watch(s->ioc, G_IO_OUT, + net_stream_writable, s, NULL); return 0; } s->send_index = 0; return size; } +static gboolean net_stream_send(QIOChannel *ioc, + GIOCondition condition, + gpointer data); + static void net_stream_send_completed(NetClientState *nc, ssize_t len) { NetStreamState *s = DO_UPCAST(NetStreamState, nc, nc); - if (!s->read_poll) { - net_stream_read_poll(s, true); + if (!s->ioc_read_tag) { + s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN, + net_stream_send, s, NULL); } } @@ -130,19 +127,24 @@ static void net_stream_rs_finalize(SocketReadState *rs) if (qemu_send_packet_async(&s->nc, rs->buf, rs->packet_len, net_stream_send_completed) == 0) { - net_stream_read_poll(s, false); + if (s->ioc_read_tag) { + g_source_remove(s->ioc_read_tag); + s->ioc_read_tag = 0; + } } } -static void net_stream_send(void *opaque) +static gboolean net_stream_send(QIOChannel *ioc, + GIOCondition condition, + gpointer data) { - NetStreamState *s = opaque; + NetStreamState *s = data; int size; int ret; - uint8_t buf1[NET_BUFSIZE]; - const uint8_t *buf; + char buf1[NET_BUFSIZE]; + const char *buf; - size = recv(s->fd, buf1, sizeof(buf1), 0); + size = qio_channel_read(s->ioc, buf1, sizeof(buf1), NULL); if (size < 0) { if (errno != EWOULDBLOCK) { goto eoc; @@ -150,52 +152,63 @@ static void net_stream_send(void *opaque) } else if (size == 0) { /* end of connection */ eoc: - net_stream_read_poll(s, false); - net_stream_write_poll(s, false); - if (s->listen_fd != -1) { - qemu_set_fd_handler(s->listen_fd, net_stream_accept, NULL, s); + s->ioc_read_tag = 0; + if (s->ioc_write_tag) { + g_source_remove(s->ioc_write_tag); + s->ioc_write_tag = 0; + } + if (s->listener) { + qio_net_listener_set_client_func(s->listener, net_stream_listen, + s, NULL); } - closesocket(s->fd); + object_unref(OBJECT(s->ioc)); + s->ioc = NULL; - s->fd = -1; net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); s->nc.link_down = true; memset(s->nc.info_str, 0, sizeof(s->nc.info_str)); - return; + return G_SOURCE_REMOVE; } buf = buf1; - ret = net_fill_rstate(&s->rs, buf, size); + ret = net_fill_rstate(&s->rs, (const uint8_t *)buf, size); if (ret == -1) { goto eoc; } + + return G_SOURCE_CONTINUE; } static void net_stream_cleanup(NetClientState *nc) { NetStreamState *s = DO_UPCAST(NetStreamState, nc, nc); - if (s->fd != -1) { - net_stream_read_poll(s, false); - net_stream_write_poll(s, false); - close(s->fd); - s->fd = -1; + if (s->ioc) { + if (QIO_CHANNEL_SOCKET(s->ioc)->fd != -1) { + if (s->ioc_read_tag) { + g_source_remove(s->ioc_read_tag); + s->ioc_read_tag = 0; + } + if (s->ioc_write_tag) { + g_source_remove(s->ioc_write_tag); + s->ioc_write_tag = 0; + } + } + object_unref(OBJECT(s->ioc)); + s->ioc = NULL; } - if (s->listen_fd != -1) { - qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); - closesocket(s->listen_fd); - s->listen_fd = -1; + if (s->listen_ioc) { + if (s->listener) { + qio_net_listener_disconnect(s->listener); + object_unref(OBJECT(s->listener)); + s->listener = NULL; + } + object_unref(OBJECT(s->listen_ioc)); + s->listen_ioc = NULL; } } -static void net_stream_connect(void *opaque) -{ - NetStreamState *s = opaque; - s->send_fn = net_stream_send; - net_stream_read_poll(s, true); -} - static NetClientInfo net_stream_info = { .type = NET_CLIENT_DRIVER_STREAM, .size = sizeof(NetStreamState), @@ -203,77 +216,64 @@ static NetClientInfo net_stream_info = { .cleanup = net_stream_cleanup, }; -static NetStreamState *net_stream_fd_init_stream(NetClientState *peer, - const char *model, - const char *name, - int fd, int is_connected) +static void net_stream_listen(QIONetListener *listener, + QIOChannelSocket *cioc, + void *opaque) { - NetClientState *nc; - NetStreamState *s; + NetStreamState *s = opaque; + SocketAddress *addr; + char *uri; - nc = qemu_new_net_client(&net_stream_info, peer, model, name); + object_ref(OBJECT(cioc)); - snprintf(nc->info_str, sizeof(nc->info_str), "fd=%d", fd); + qio_net_listener_set_client_func(s->listener, NULL, s, NULL); - s = DO_UPCAST(NetStreamState, nc, nc); + s->ioc = QIO_CHANNEL(cioc); + qio_channel_set_name(s->ioc, "stream-server"); + s->nc.link_down = false; - s->fd = fd; - s->listen_fd = -1; - net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); + s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN, net_stream_send, + s, NULL); - /* Disable Nagle algorithm on TCP sockets to reduce latency */ - socket_set_nodelay(fd); + addr = qio_channel_socket_get_remote_address(cioc, NULL); + g_assert(addr != NULL); + uri = socket_uri(addr); + pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), uri); + g_free(uri); + qapi_free_SocketAddress(addr); - if (is_connected) { - net_stream_connect(s); - } else { - qemu_set_fd_handler(s->fd, NULL, net_stream_connect, s); - } - return s; } -static void net_stream_accept(void *opaque) +static void net_stream_server_listening(QIOTask *task, gpointer opaque) { NetStreamState *s = opaque; - struct sockaddr_storage saddr; - socklen_t len; - int fd; - - for (;;) { - len = sizeof(saddr); - fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); - if (fd < 0 && errno != EINTR) { - return; - } else if (fd >= 0) { - qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); - break; - } - } - - s->fd = fd; - s->nc.link_down = false; - net_stream_connect(s); - switch (saddr.ss_family) { - case AF_INET: { - struct sockaddr_in *saddr_in = (struct sockaddr_in *)&saddr; + QIOChannelSocket *listen_sioc = QIO_CHANNEL_SOCKET(s->listen_ioc); + SocketAddress *addr; + int ret; - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "connection from %s:%d", - inet_ntoa(saddr_in->sin_addr), ntohs(saddr_in->sin_port)); - break; + if (listen_sioc->fd < 0) { + snprintf(s->nc.info_str, sizeof(s->nc.info_str), "connection error"); + return; } - case AF_UNIX: { - struct sockaddr_un saddr_un; - len = sizeof(saddr_un); - getsockname(s->listen_fd, (struct sockaddr *)&saddr_un, &len); + addr = qio_channel_socket_get_local_address(listen_sioc, NULL); + g_assert(addr != NULL); + ret = qemu_socket_try_set_nonblock(listen_sioc->fd); + if (addr->type == SOCKET_ADDRESS_TYPE_FD && ret < 0) { snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "connect from %s", saddr_un.sun_path); - break; - } - default: - g_assert_not_reached(); + "can't use file descriptor %s (errno %d)", + addr->u.fd.str, -ret); + return; } + g_assert(ret == 0); + qapi_free_SocketAddress(addr); + + s->nc.link_down = true; + s->listener = qio_net_listener_new(); + + net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); + qio_net_listener_set_client_func(s->listener, net_stream_listen, s, NULL); + qio_net_listener_add(s->listener, listen_sioc); } static int net_stream_server_init(NetClientState *peer, @@ -284,103 +284,55 @@ static int net_stream_server_init(NetClientState *peer, { NetClientState *nc; NetStreamState *s; - int fd, ret; + QIOChannelSocket *listen_sioc = qio_channel_socket_new(); - switch (addr->type) { - case SOCKET_ADDRESS_TYPE_INET: { - struct sockaddr_in saddr_in; + nc = qemu_new_net_client(&net_stream_info, peer, model, name); + s = DO_UPCAST(NetStreamState, nc, nc); - if (convert_host_port(&saddr_in, addr->u.inet.host, addr->u.inet.port, - errp) < 0) { - return -1; - } + s->listen_ioc = QIO_CHANNEL(listen_sioc); + qio_channel_socket_listen_async(listen_sioc, addr, 0, + net_stream_server_listening, s, + NULL, NULL); - fd = qemu_socket(PF_INET, SOCK_STREAM, 0); - if (fd < 0) { - error_setg_errno(errp, errno, "can't create stream socket"); - return -1; - } - qemu_socket_set_nonblock(fd); + return 0; +} - socket_set_fast_reuse(fd); +static void net_stream_client_connected(QIOTask *task, gpointer opaque) +{ + NetStreamState *s = opaque; + QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(s->ioc); + SocketAddress *addr; + gchar *uri; + int ret; - ret = bind(fd, (struct sockaddr *)&saddr_in, sizeof(saddr_in)); - if (ret < 0) { - error_setg_errno(errp, errno, "can't bind ip=%s to socket", - inet_ntoa(saddr_in.sin_addr)); - closesocket(fd); - return -1; - } - break; + if (sioc->fd < 0) { + snprintf(s->nc.info_str, sizeof(s->nc.info_str), "connection error"); + return; } - case SOCKET_ADDRESS_TYPE_UNIX: { - struct sockaddr_un saddr_un; - - ret = unlink(addr->u.q_unix.path); - if (ret < 0 && errno != ENOENT) { - error_setg_errno(errp, errno, "failed to unlink socket %s", - addr->u.q_unix.path); - return -1; - } - - saddr_un.sun_family = PF_UNIX; - ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s", - addr->u.q_unix.path); - if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) { - error_setg(errp, "UNIX socket path '%s' is too long", - addr->u.q_unix.path); - error_append_hint(errp, "Path must be less than %zu bytes\n", - sizeof(saddr_un.sun_path)); - } - fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0); - if (fd < 0) { - error_setg_errno(errp, errno, "can't create stream socket"); - return -1; - } - qemu_socket_set_nonblock(fd); - - ret = bind(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un)); - if (ret < 0) { - error_setg_errno(errp, errno, "can't create socket with path: %s", - saddr_un.sun_path); - closesocket(fd); - return -1; - } - break; - } - case SOCKET_ADDRESS_TYPE_FD: - fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); - if (fd == -1) { - return -1; - } - ret = qemu_socket_try_set_nonblock(fd); - if (ret < 0) { - error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", - name, fd); - return -1; - } - break; - default: - g_assert_not_reached(); - } + addr = qio_channel_socket_get_remote_address(sioc, NULL); + g_assert(addr != NULL); + uri = socket_uri(addr); + pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), uri); + g_free(uri); - ret = listen(fd, 0); - if (ret < 0) { - error_setg_errno(errp, errno, "can't listen on socket"); - closesocket(fd); - return -1; + ret = qemu_socket_try_set_nonblock(sioc->fd); + if (addr->type == SOCKET_ADDRESS_TYPE_FD && ret < 0) { + snprintf(s->nc.info_str, sizeof(s->nc.info_str), + "can't use file descriptor %s (errno %d)", + addr->u.fd.str, -ret); + return; } + g_assert(ret == 0); + qapi_free_SocketAddress(addr); - nc = qemu_new_net_client(&net_stream_info, peer, model, name); - s = DO_UPCAST(NetStreamState, nc, nc); - s->fd = -1; - s->listen_fd = fd; - s->nc.link_down = true; net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); - qemu_set_fd_handler(s->listen_fd, net_stream_accept, NULL, s); - return 0; + /* Disable Nagle algorithm on TCP sockets to reduce latency */ + qio_channel_set_delay(s->ioc, false); + + s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN, net_stream_send, + s, NULL); } static int net_stream_client_init(NetClientState *peer, @@ -390,114 +342,17 @@ static int net_stream_client_init(NetClientState *peer, Error **errp) { NetStreamState *s; - int fd, connected, ret; - gchar *info_str; - - switch (addr->type) { - case SOCKET_ADDRESS_TYPE_INET: { - struct sockaddr_in saddr_in; - - if (convert_host_port(&saddr_in, addr->u.inet.host, addr->u.inet.port, - errp) < 0) { - return -1; - } - - fd = qemu_socket(PF_INET, SOCK_STREAM, 0); - if (fd < 0) { - error_setg_errno(errp, errno, "can't create stream socket"); - return -1; - } - qemu_socket_set_nonblock(fd); - - connected = 0; - for (;;) { - ret = connect(fd, (struct sockaddr *)&saddr_in, sizeof(saddr_in)); - if (ret < 0) { - if (errno == EINTR || errno == EWOULDBLOCK) { - /* continue */ - } else if (errno == EINPROGRESS || - errno == EALREADY) { - break; - } else { - error_setg_errno(errp, errno, "can't connect socket"); - closesocket(fd); - return -1; - } - } else { - connected = 1; - break; - } - } - info_str = g_strdup_printf("connect to %s:%d", - inet_ntoa(saddr_in.sin_addr), - ntohs(saddr_in.sin_port)); - break; - } - case SOCKET_ADDRESS_TYPE_UNIX: { - struct sockaddr_un saddr_un; - - saddr_un.sun_family = PF_UNIX; - ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s", - addr->u.q_unix.path); - if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) { - error_setg(errp, "UNIX socket path '%s' is too long", - addr->u.q_unix.path); - error_append_hint(errp, "Path must be less than %zu bytes\n", - sizeof(saddr_un.sun_path)); - } + NetClientState *nc; + QIOChannelSocket *sioc = qio_channel_socket_new(); - fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0); - if (fd < 0) { - error_setg_errno(errp, errno, "can't create stream socket"); - return -1; - } - qemu_socket_set_nonblock(fd); - - connected = 0; - for (;;) { - ret = connect(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un)); - if (ret < 0) { - if (errno == EINTR || errno == EWOULDBLOCK) { - /* continue */ - } else if (errno == EAGAIN || - errno == EALREADY) { - break; - } else { - error_setg_errno(errp, errno, "can't connect socket"); - closesocket(fd); - return -1; - } - } else { - connected = 1; - break; - } - } - info_str = g_strdup_printf(" connect to %s", saddr_un.sun_path); - break; - } - case SOCKET_ADDRESS_TYPE_FD: - fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); - if (fd == -1) { - return -1; - } - ret = qemu_socket_try_set_nonblock(fd); - if (ret < 0) { - error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", - name, fd); - return -1; - } - connected = 1; - info_str = g_strdup_printf("connect to fd %d", fd); - break; - default: - error_setg(errp, "only support inet, unix or fd type"); - return -1; - } + nc = qemu_new_net_client(&net_stream_info, peer, model, name); + s = DO_UPCAST(NetStreamState, nc, nc); - s = net_stream_fd_init_stream(peer, model, name, fd, connected); + s->ioc = QIO_CHANNEL(sioc); - pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str); - g_free(info_str); + qio_channel_socket_connect_async(sioc, addr, + net_stream_client_connected, s, + NULL, NULL); return 0; }