From patchwork Thu Oct 20 16:25:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013769 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 3AA09C4332F for ; Thu, 20 Oct 2022 16:50:05 +0000 (UTC) Received: from localhost ([::1]:55318 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYk7-0003bN-8V for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:50:03 -0400 Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYbV-0008Lz-B9 for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:41:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60624) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNF-0004kR-LO for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:26 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:44673) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYND-0006yl-Lc for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:25 -0400 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MDeAZ-1ovghz1zkN-00Am0K; Thu, 20 Oct 2022 18:26:08 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard Subject: [PATCH v13 04/17] qapi: net: introduce a way to bypass qemu_opts_parse_noisily() Date: Thu, 20 Oct 2022 18:25:45 +0200 Message-Id: <20221020162558.123284-5-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:cIS3YCwDSQvgN0xzzUGDagI0rsu6xUoGBxoFeAhbGyx0pODHnhH Ei006VHLV0fpsSSFrRo/TVbXgndmhq+vKvM/zLZOCSUsWF29lZ4Pce4D+p12W30tvObK91V xD5ZSG1RCtX+GwJdXHNJfyfd8bJ+qDnY/2HkJgu2i5XyQraMfeZSNTXncWH4CUPMt3EuwYo gmhqV7shWzDa76vWtGepg== X-UI-Out-Filterresults: notjunk:1;V03:K0:385AixmgNVA=:pqD0ectJjKcYTckfR+n6lw h/3cJrHEroYvUZtrecTB+n5YVUlmoJQkXdTox5UoFiXoWw2VSabqzjc20UFZd7FXpvSPhWNiO 89WDd2OXDon+imPRfM5KjmlC3yg3buH8DykgZmMa7kQ2mK8yirbo2wJmOAQsAhebnlmkXVxz3 BpmuIakKPxMiPeLt7FFKeoVv4pj7KSWA99vY2xf96FN7dP/qbNuq1qZysW8qmdSG6QjKvUkq9 Pj9xRYZ7TkfEGk6NVmBEcnhmXHdmD0XwbYjh2IwDH7Non0/KsdC98y+fqqKVhmygvkpy/HyK9 guaEDuD/IvDY+tQWNUl7vWQ3GxFbs3KLBhJ0H2m9eElqsisaYGxRzM9zARtTaMUTAZnR/+uWQ sydjBGXKy2BpvVYAtlpSFeQYAT2sz0DzTYPPJBqW9bL/vxSVX7JQkZZ79AQTXvUrN0ArMV5n3 KnTeuwD6lRW80oGRauA8DieCgDA82SVOsAyl4/uHdCVbtCrCcYa0fGFQGp1/0pQzS9GtRQEbk 7oKjzZztJ9/9twgs3H+1bNxp6VVZAuu5hDqaFsr5OMDOJVl953KsDPhN7T96QZNzUGNQqqj7u HQm+1TLY0iwnM/sTg9nmxmdxfEm9NuH9QFiImFb69BAR6L4HdsJELql+E/528I8w3QLJOmZ4y rt2RWQy+w1B2mHqbLycLOWR1/MR6Qk4+/BrMvEEeX+j9ZMY3C5yrpigpl7s889w2B+mg6pPKA PpE//yRQmvh4YaT6uxeKxXlq7ebBaNblkOtLyMlL8mF3n5YNlWiP950WHYzbzvgMwDUaTbd9K bx0WQhc Received-SPF: permerror client-ip=212.227.126.133; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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 Reviewed-by: Markus Armbruster Acked-by: Michael S. Tsirkin --- include/net/net.h | 2 ++ net/net.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++ softmmu/vl.c | 6 ++++- 3 files changed, 64 insertions(+), 1 deletion(-) diff --git a/include/net/net.h b/include/net/net.h index 55023e7e9fa9..025dbf1e143b 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -220,6 +220,8 @@ extern NICInfo nd_table[MAX_NICS]; extern const char *host_net_devices[]; /* from net.c */ +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); diff --git a/net/net.c b/net/net.c index f056e8aebfb2..ffe3e5a2cf1d 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); @@ -1579,6 +1606,36 @@ void net_init_clients(void) &error_fatal); } +/* + * Does this -netdev argument use modern rather than traditional syntax? + * Modern syntax is to be parsed with netdev_parse_modern(). + * Traditional syntax is to be parsed with net_client_parse(). + */ +bool netdev_is_modern(const char *optarg) +{ + return false; +} + +/* + * netdev_parse_modern() uses modern, more expressive syntax than + * net_client_parse(), but supports only the -netdev option. + * netdev_parse_modern() appends to @nd_queue, whereas net_client_parse() + * appends to @qemu_netdev_opts. + */ +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)) { diff --git a/softmmu/vl.c b/softmmu/vl.c index e69aa43de469..99fb49c7b0ee 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -2801,7 +2801,11 @@ void qemu_init(int argc, char **argv) break; case QEMU_OPTION_netdev: default_net = 0; - net_client_parse(qemu_find_opts("netdev"), optarg); + 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; From patchwork Thu Oct 20 16:25:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013843 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 B7567C433FE for ; Thu, 20 Oct 2022 17:14:21 +0000 (UTC) Received: from localhost ([::1]:53766 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olZ7X-0003AF-6i for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 13:14:15 -0400 Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYrf-0007oF-Ak for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:57:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51518) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNY-0004vi-C6 for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:49 -0400 Received: from mout.kundenserver.de ([212.227.126.134]:49405) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNG-0006zN-4S for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:39 -0400 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1N7QM9-1pAbCW41Cn-017peA; Thu, 20 Oct 2022 18:26:10 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Subject: [PATCH v13 05/17] net: introduce qemu_set_info_str() function Date: Thu, 20 Oct 2022 18:25:46 +0200 Message-Id: <20221020162558.123284-6-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:J9EQXLqtWLORmJOCxSzN+R8yrwnijhrnrCOlKNRnxq4VuYdYXgA rZuBKDqFmWp56pQS62xC0CgiuQOd7hC28/FpKqoVz2YCHjxKmFdnD3Rqm/xh2obHchwLxr7 5UGEKQ+EvlqceoEMpMbApgRgyOk0F5BGbFE1b8dBqJcRsd4q8dyk4y4qXphuEmnbIu0VUR+ +RttfA1moZHsbc61HyupA== X-UI-Out-Filterresults: notjunk:1;V03:K0:qVJQ3vATfcQ=:/pFG3MK9dc0fpZOPJqamA8 em9k0miUexkkDhrjbkySBIsTpWAxvOhVF5aTXobVWSx7sP2CPA2CI9QV+OxydH8X/dTt95eyj qanl9YK8Y6yIoPuVWvl9hc/3Gr1/lAdz2EOqpboRI9Y8HzblzFNSj23eFvHTxjExCoJ0HFUsE rPgs1coMBzRg5sqm8ilH2VYViQp9wrAP1OnvHLdc/ZLq6l4eUfgFsBS+g4VATEEkREapDOtBz R85icdvHZCya6+owHNLYWVp71b2rK0GPMVUBtsQm8paiMgMjDIU+6167AHo5E9IejVEmFsuqJ QShsofPOMxwnSniw3T7j4kkSJfL2o0K1Fl3uDMqwYQ9p3K6snb0FfwvyxZC0Vz7Ioatk8m9y8 XXvJZkoRKx02xZybbolFfzKbpIqMcTUEq2cWo6BRRmDvwZ3WRUJYW/viXZ83lKuh1UGdMft+B uH0Px0gCBpfp+hk4t30bBmyBbbo+vs3PIht9Rq+sIt6hcQ+8Da1vff8PdwvujOQozS/PDXS2G pZEgirXh6QCuPsRaFuRdLLTORcQE1XII+arJrVNvL+yZ0NBpHltP6KkJB7rI9McF5Bl0JV7b2 aB044fXJ1A+4Mju5IT3TefEHkaX4NIZEJzHH6k1n+QUkG54L/wr5nB56w261Ma0c7w6TqThKl YfPXcUsiy1XUks1r71BIEIiPo0xmiAcG1xE97LDmPPjmE4Ja7EJcwpirGOfCSaNfvjfNHXlEG 1r7Vn5VoFoRDtZRmptRGP4O0+cq+2AseU5QYxNuqxinPOnJETGX+/MFgDCdGLTziqFlu8V5o/ Q1wz+15 Received-SPF: permerror client-ip=212.227.126.134; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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" Embed the setting of info_str in a function. Signed-off-by: Laurent Vivier Reviewed-by: David Gibson Acked-by: Michael S. Tsirkin Reviewed-by: Philippe Mathieu-Daudé --- hw/net/xen_nic.c | 5 ++--- include/net/net.h | 1 + net/l2tpv3.c | 3 +-- net/net.c | 17 ++++++++++++----- net/slirp.c | 5 ++--- net/socket.c | 33 ++++++++++++++------------------- net/tap-win32.c | 3 +-- net/tap.c | 13 +++++-------- net/vde.c | 3 +-- net/vhost-user.c | 3 +-- net/vhost-vdpa.c | 2 +- 11 files changed, 41 insertions(+), 47 deletions(-) diff --git a/hw/net/xen_nic.c b/hw/net/xen_nic.c index 5c815b4f0c52..7d92c2d022b0 100644 --- a/hw/net/xen_nic.c +++ b/hw/net/xen_nic.c @@ -296,9 +296,8 @@ static int net_init(struct XenLegacyDevice *xendev) netdev->nic = qemu_new_nic(&net_xen_info, &netdev->conf, "xen", NULL, netdev); - snprintf(qemu_get_queue(netdev->nic)->info_str, - sizeof(qemu_get_queue(netdev->nic)->info_str), - "nic: xenbus vif macaddr=%s", netdev->mac); + qemu_set_info_str(qemu_get_queue(netdev->nic), + "nic: xenbus vif macaddr=%s", netdev->mac); /* fill info */ xenstore_write_be_int(&netdev->xendev, "feature-rx-copy", 1); diff --git a/include/net/net.h b/include/net/net.h index 025dbf1e143b..3db75ff841ff 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -177,6 +177,7 @@ ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, void qemu_purge_queued_packets(NetClientState *nc); void qemu_flush_queued_packets(NetClientState *nc); void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge); +void qemu_set_info_str(NetClientState *nc, const char *fmt, ...); void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); bool qemu_has_ufo(NetClientState *nc); bool qemu_has_vnet_hdr(NetClientState *nc); diff --git a/net/l2tpv3.c b/net/l2tpv3.c index af373e5c300c..350041a0d6c0 100644 --- a/net/l2tpv3.c +++ b/net/l2tpv3.c @@ -723,8 +723,7 @@ int net_init_l2tpv3(const Netdev *netdev, l2tpv3_read_poll(s, true); - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "l2tpv3: connected"); + qemu_set_info_str(&s->nc, "l2tpv3: connected"); return 0; outerr: qemu_del_net_client(nc); diff --git a/net/net.c b/net/net.c index ffe3e5a2cf1d..41e05137d431 100644 --- a/net/net.c +++ b/net/net.c @@ -141,13 +141,20 @@ char *qemu_mac_strdup_printf(const uint8_t *macaddr) macaddr[3], macaddr[4], macaddr[5]); } +void qemu_set_info_str(NetClientState *nc, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vsnprintf(nc->info_str, sizeof(nc->info_str), fmt, ap); + va_end(ap); +} + void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) { - snprintf(nc->info_str, sizeof(nc->info_str), - "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", - nc->model, - macaddr[0], macaddr[1], macaddr[2], - macaddr[3], macaddr[4], macaddr[5]); + qemu_set_info_str(nc, "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", + nc->model, macaddr[0], macaddr[1], macaddr[2], + macaddr[3], macaddr[4], macaddr[5]); } static int mac_table[256] = {0}; diff --git a/net/slirp.c b/net/slirp.c index 8679be644420..14a8d592774c 100644 --- a/net/slirp.c +++ b/net/slirp.c @@ -611,9 +611,8 @@ static int net_slirp_init(NetClientState *peer, const char *model, nc = qemu_new_net_client(&net_slirp_info, peer, model, name); - snprintf(nc->info_str, sizeof(nc->info_str), - "net=%s,restrict=%s", inet_ntoa(net), - restricted ? "on" : "off"); + qemu_set_info_str(nc, "net=%s,restrict=%s", inet_ntoa(net), + restricted ? "on" : "off"); s = DO_UPCAST(SlirpState, nc, nc); diff --git a/net/socket.c b/net/socket.c index bfd8596250c4..ade1ecf38b87 100644 --- a/net/socket.c +++ b/net/socket.c @@ -179,7 +179,7 @@ static void net_socket_send(void *opaque) s->fd = -1; net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); s->nc.link_down = true; - memset(s->nc.info_str, 0, sizeof(s->nc.info_str)); + qemu_set_info_str(&s->nc, ""); return; } @@ -387,16 +387,15 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer, /* mcast: save bound address as dst */ if (is_connected && mcast != NULL) { s->dgram_dst = saddr; - snprintf(nc->info_str, sizeof(nc->info_str), - "socket: fd=%d (cloned mcast=%s:%d)", - fd, inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + qemu_set_info_str(nc, "socket: 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), - "socket: fd=%d %s", fd, SocketAddressType_str(sa_type)); + qemu_set_info_str(nc, "socket: fd=%d %s", fd, + SocketAddressType_str(sa_type)); } return s; @@ -430,7 +429,7 @@ static NetSocketState *net_socket_fd_init_stream(NetClientState *peer, nc = qemu_new_net_client(&net_socket_info, peer, model, name); - snprintf(nc->info_str, sizeof(nc->info_str), "socket: fd=%d", fd); + qemu_set_info_str(nc, "socket: fd=%d", fd); s = DO_UPCAST(NetSocketState, nc, nc); @@ -497,9 +496,8 @@ static void net_socket_accept(void *opaque) s->fd = fd; s->nc.link_down = false; net_socket_connect(s); - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "socket: connection from %s:%d", - inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + qemu_set_info_str(&s->nc, "socket: connection from %s:%d", + inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); } static int net_socket_listen_init(NetClientState *peer, @@ -597,9 +595,8 @@ static int net_socket_connect_init(NetClientState *peer, return -1; } - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "socket: connect to %s:%d", - inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + qemu_set_info_str(&s->nc, "socket: connect to %s:%d", + inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); return 0; } @@ -642,9 +639,8 @@ static int net_socket_mcast_init(NetClientState *peer, s->dgram_dst = saddr; - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "socket: mcast=%s:%d", - inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + qemu_set_info_str(&s->nc, "socket: mcast=%s:%d", + inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); return 0; } @@ -697,9 +693,8 @@ static int net_socket_udp_init(NetClientState *peer, s->dgram_dst = raddr; - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "socket: udp=%s:%d", - inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port)); + qemu_set_info_str(&s->nc, "socket: udp=%s:%d", inet_ntoa(raddr.sin_addr), + ntohs(raddr.sin_port)); return 0; } diff --git a/net/tap-win32.c b/net/tap-win32.c index 7466f22e77a4..a49c28ba5dc5 100644 --- a/net/tap-win32.c +++ b/net/tap-win32.c @@ -789,8 +789,7 @@ static int tap_win32_init(NetClientState *peer, const char *model, s = DO_UPCAST(TAPState, nc, nc); - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "tap: ifname=%s", ifname); + qemu_set_info_str(&s->nc, "tap: ifname=%s", ifname); s->handle = handle; diff --git a/net/tap.c b/net/tap.c index e203d07a1216..1210a0436de8 100644 --- a/net/tap.c +++ b/net/tap.c @@ -630,8 +630,7 @@ int net_init_bridge(const Netdev *netdev, const char *name, } s = net_tap_fd_init(peer, "bridge", name, fd, vnet_hdr); - snprintf(s->nc.info_str, sizeof(s->nc.info_str), "helper=%s,br=%s", helper, - br); + qemu_set_info_str(&s->nc, "helper=%s,br=%s", helper, br); return 0; } @@ -690,14 +689,12 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer, } if (tap->has_fd || tap->has_fds) { - snprintf(s->nc.info_str, sizeof(s->nc.info_str), "fd=%d", fd); + qemu_set_info_str(&s->nc, "fd=%d", fd); } else if (tap->has_helper) { - snprintf(s->nc.info_str, sizeof(s->nc.info_str), "helper=%s", - tap->helper); + qemu_set_info_str(&s->nc, "helper=%s", tap->helper); } else { - snprintf(s->nc.info_str, sizeof(s->nc.info_str), - "ifname=%s,script=%s,downscript=%s", ifname, script, - downscript); + qemu_set_info_str(&s->nc, "ifname=%s,script=%s,downscript=%s", ifname, + script, downscript); if (strcmp(downscript, "no") != 0) { snprintf(s->down_script, sizeof(s->down_script), "%s", downscript); diff --git a/net/vde.c b/net/vde.c index 1083916bcf52..c0a08662cc30 100644 --- a/net/vde.c +++ b/net/vde.c @@ -98,8 +98,7 @@ static int net_vde_init(NetClientState *peer, const char *model, nc = qemu_new_net_client(&net_vde_info, peer, model, name); - snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d", - sock, vde_datafd(vde)); + qemu_set_info_str(nc, "sock=%s,fd=%d", sock, vde_datafd(vde)); s = DO_UPCAST(VDEState, nc, nc); diff --git a/net/vhost-user.c b/net/vhost-user.c index b1a0247b5981..3a6b90da8661 100644 --- a/net/vhost-user.c +++ b/net/vhost-user.c @@ -341,8 +341,7 @@ static int net_vhost_user_init(NetClientState *peer, const char *device, user = g_new0(struct VhostUserState, 1); for (i = 0; i < queues; i++) { nc = qemu_new_net_client(&net_vhost_user_info, peer, device, name); - snprintf(nc->info_str, sizeof(nc->info_str), "vhost-user%d to %s", - i, chr->label); + qemu_set_info_str(nc, "vhost-user%d to %s", i, chr->label); nc->queue_index = i; if (!nc0) { nc0 = nc; diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 4bc3fd01a878..e1865bea6aa3 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -593,7 +593,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, nc = qemu_new_net_control_client(&net_vhost_vdpa_cvq_info, peer, device, name); } - snprintf(nc->info_str, sizeof(nc->info_str), TYPE_VHOST_VDPA); + qemu_set_info_str(nc, TYPE_VHOST_VDPA); s = DO_UPCAST(VhostVDPAState, nc, nc); s->vhost_vdpa.device_fd = vdpa_device_fd; From patchwork Thu Oct 20 16:25:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013919 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 7B199C433FE for ; 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Thu, 20 Oct 2022 18:26:13 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard , Stefano Brivio Subject: [PATCH v13 07/17] net: socket: Don't ignore EINVAL on netdev socket connection Date: Thu, 20 Oct 2022 18:25:48 +0200 Message-Id: <20221020162558.123284-8-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:jVbH98dBD8KCQu3CflYYf2WHK6IxNZTn8SOKftQzM6rYbMt841f umYZfb7DOiy9WszJBh5jO14Kod8PpmW/LMWjAEhTG9s8N6WLoQOySO0cu8lrpfGZnjoMBNZ lRicfqi3QkfVzU8bONwOtd3cm8/J59uUX5+ddhDbODqQUvcOCI4/mZ1ldMR3H3UUvvzvisa jlIz6tChZQAVypz1IeUiA== X-UI-Out-Filterresults: notjunk:1;V03:K0:YM+4D1cBfxQ=:vycxjoJM7Ia1VeW2HyVOwH W6QgqHlOPjLlQWc8GajF3WmkpK3wnG3PkcSsmO1pCdWI7MIBwRFpM+hDgfJ7QbmU1cNVu3fqz 5WAVsO3WNCiyTjpqXHvwAz9WqZ9GB5oNhyrOBa/p1JgVeH5DLksoWrawAtAS/d1iZpPPm4yTF Yd4wxkIT0Y5xdeSJ1qwjBzLF3TiVRndY40YJJimxZB+HxWoW3Egoddz7wJQNilm1aWbC6R12C GhqRbJMOBcFj251iMF8WaEkaWKtCMMoPQqlJ5GIbpJq9SX4FDlorLY5aGtue5AAWUwCU9F1II POwt2p/JgYq1EuJNaFow7n8gORROcXJspu0b9LYb9e/vajQmijkn5uXEaY5+f8v56ydt2u8XL iVXJnRY6vb1Sl5SCgnB4pQIhT0mAeQ+eQ8VDpcmKqGhjuw3LaDLwSX2Qvz5pVyDFju8YNhwDQ yLEwFBtcOSTcQlVf4T2GjQzjI5DvDxbzL/qUrM8N2VTAarbgGJD6glMvfQlxFmLNz4TdbUZWX yZ9OxdjH9R9ghYt3h52qycfhePeEf5xMYnqirW+JnJD3bpeolBWFuNGslSXGmdu9wwuFlnnI+ S4C9U5knh7kT4zVbY+Y4AzouZLUgBIOeFeSaYTWtwNPQaX0ZtTTh+NpqCJCEG0MZlwnIjaZ8N T6FHzCK2zK+GA7aDJacjGwmgUpFxAWiSiHI/SGUqoenK/NjeQGxakyAiJIq+6joel7NGAHKPP 3E4zR0vkp2VIKsr6zVUL30GaLRYmUrYcYnxcAgwC6Fy3eNa9815fvBpOnz4wgJUwHXQdTQoNk +BKz8NR Received-SPF: permerror client-ip=212.227.126.135; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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_socket_connect_init(), but if connect() returns EINVAL, we'll fail silently. Remove the related exception. Signed-off-by: Stefano Brivio Signed-off-by: Laurent Vivier Reviewed-by: David Gibson Acked-by: Michael S. Tsirkin --- net/socket.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/socket.c b/net/socket.c index ade1ecf38b87..4944bb70d580 100644 --- a/net/socket.c +++ b/net/socket.c @@ -577,8 +577,7 @@ static int net_socket_connect_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 Oct 20 16:25:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013765 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 29D6DC4332F for ; Thu, 20 Oct 2022 16:43:34 +0000 (UTC) Received: from localhost ([::1]:33682 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYdo-0003nD-SI for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:43:32 -0400 Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYbT-0008A8-8l for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:41:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51510) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNT-0004vW-BF for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:47 -0400 Received: from mout.kundenserver.de ([212.227.126.134]:58417) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNH-0006za-Hi for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:30 -0400 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MN67J-1oUhwb2Rev-00J3Uk; Thu, 20 Oct 2022 18:26:16 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard , Stefano Brivio , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v13 09/17] net: stream: add unix socket Date: Thu, 20 Oct 2022 18:25:50 +0200 Message-Id: <20221020162558.123284-10-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:HJoK/SQ4yecJoCPq7xEEawRQWKx3wSNpaZhs/VajKL27zjAYq5B K2RQsQyga8WfRInABglTV/mkFEiPhbcJvrwM/j78qyLWDb7/y2i9fDQy0dcipjesoZOu1rr JFOH1kOqbOyLk9DzN0sl4foEIqJFk8r9J5t+ogX1dw7qEPRuPnWBvcJR0keKxThNBFRg8YF Yh8slnv+lCW4PDZ/fXwlA== X-UI-Out-Filterresults: notjunk:1;V03:K0:g+W0XoDoc5o=:XufBL2ms4qLGCeaDzE4Vo6 OwRjpzGd1F1fSAK28RIfVSmTfjP5zxBPMWdS+u44EdJ28RVKDl4dLGg1T5qGExABlaVVT13QA K5o57nHrPPUc+lWdzosVnWd9VyS2i7DT62RgTEauCYLHo5ntOBmn/VaZEmWwr3w6xpjAjSjpL PAh3XhnqgUyi/0HNFnsM6SdeLV0Ero4qWlKFcnJ+f8NCVUumPuolLMlUiHZ4jfIVRTgQo1O4Q jnnng/wrFFjtmHaOg2sLbUYCg2+DxUN4bx7SKwjM0bFA8EUy641811Kik0yY/RM+lbSK0XjIE G3W5+dEh5AJsVmOsSIuHSLPB68VXWqw3bXS3V48TKXg0FjpaSVTRCVo6IIqkL/173zm+5xZ5i 5JMdi/06SJYDHK09o6GPQI5gMBUgB+ZSZIba6K1uMz2ecmhX6Q3rS5gwX8BfR/PKe/1GEwTkZ 5Zy4E+3Uh3n6K6zYdpHOCwFLv0VMsqhvYnQax1HahdcnGkxjpMshkaW01vzBQ6Y/lvP6e980/ /KNpHhFslkkE+Ex8XpqcQE3XvjSCJT6M3PFZu45jcLemaZV8fV9pmmq1ODPU6/KtcXX40J1Ka sEU0l0y6UQQ0rqBNJdld030OqUpF9z5c12+tqAHpR8pQldmpX3jx/eBM9crsfj3WPyxsQN0Ya vBZ2iadPqB1OHXssE7sHi/UaxM3NexI0bIFQ2WJkJvX0eS/inHz7V7z4qRJBRnHveQ2tmSySB vaStSIobUuw9qYPWB6rHgRuYF+FD88WqiZQ/zMC7fNuK8Yy6Rkf8B2n+oBAxj5UM/3FQ+i20o DMy1vlr Received-SPF: permerror client-ip=212.227.126.134; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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 Acked-by: Michael S. Tsirkin Acked-by: Markus Armbruster (QAPI schema) Reviewed-by: Philippe Mathieu-Daudé --- net/stream.c | 107 +++++++++++++++++++++++++++++++++++++++++++++--- qapi/net.json | 2 +- qemu-options.hx | 1 + 3 files changed, 104 insertions(+), 6 deletions(-) diff --git a/net/stream.c b/net/stream.c index e4388fe7e45c..884f473018da 100644 --- a/net/stream.c +++ b/net/stream.c @@ -235,7 +235,7 @@ static NetStreamState *net_stream_fd_init(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; @@ -253,8 +253,26 @@ static void net_stream_accept(void *opaque) s->fd = fd; s->nc.link_down = false; net_stream_connect(s); - qemu_set_info_str(&s->nc, "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; + + qemu_set_info_str(&s->nc, "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); + qemu_set_info_str(&s->nc, "connect from %s", saddr_un.sun_path); + break; + } + default: + g_assert_not_reached(); + } } static int net_stream_server_init(NetClientState *peer, @@ -294,6 +312,43 @@ static int net_stream_server_init(NetClientState *peer, } break; } + 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)); + return -1; + } + + 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) { @@ -337,6 +392,7 @@ static int net_stream_client_init(NetClientState *peer, { NetStreamState *s; struct sockaddr_in saddr_in; + struct sockaddr_un saddr_un; int fd, connected, ret; switch (addr->type) { @@ -373,6 +429,45 @@ static int net_stream_client_init(NetClientState *peer, } } break; + case SOCKET_ADDRESS_TYPE_UNIX: + 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)); + return -1; + } + + 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; + } + } + break; case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); if (fd == -1) { @@ -387,7 +482,7 @@ static int net_stream_client_init(NetClientState *peer, connected = 1; break; default: - error_setg(errp, "only support inet or fd type"); + error_setg(errp, "only support inet, unix or fd type"); return -1; } @@ -399,13 +494,15 @@ static int net_stream_client_init(NetClientState *peer, inet_ntoa(saddr_in.sin_addr), ntohs(saddr_in.sin_port)); break; + case SOCKET_ADDRESS_TYPE_UNIX: + qemu_set_info_str(&s->nc, " connect to %s", saddr_un.sun_path); + break; case SOCKET_ADDRESS_TYPE_FD: qemu_set_info_str(&s->nc, "connect to fd %d", fd); break; default: g_assert_not_reached(); } - return 0; } diff --git a/qapi/net.json b/qapi/net.json index 185748cc6c6c..aed4ce1a97ff 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -583,7 +583,7 @@ # or connect to (server=false) # @server: create server socket (default: false) # -# Only SocketAddress types 'inet' and 'fd' are supported. +# Only SocketAddress types 'unix', 'inet' and 'fd' are supported. # # Since: 7.2 ## diff --git a/qemu-options.hx b/qemu-options.hx index 396c1d11e1e2..98e2595df93b 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2773,6 +2773,7 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev, " 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=unix,addr.path=path\n" "-netdev stream,id=str[,server=on|off],addr.type=fd,addr.str=file-descriptor\n" " configure a network backend to connect to another network\n" " using a socket connection in stream mode.\n" From patchwork Thu Oct 20 16:25:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013782 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 82ADFC433FE for ; Thu, 20 Oct 2022 16:53:34 +0000 (UTC) Received: from localhost ([::1]:44118 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYnS-00080u-Dh for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:53:30 -0400 Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYn9-0001Hc-CV for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:53:11 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51514) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNY-0004vg-9J for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:49 -0400 Received: from mout.kundenserver.de ([212.227.126.131]:34151) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNR-000712-Fb for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:40 -0400 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MDv1A-1ovPjC0Ti8-009wn9; Thu, 20 Oct 2022 18:26:18 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard , Stefano Brivio , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v13 10/17] net: dgram: make dgram_dst generic Date: Thu, 20 Oct 2022 18:25:51 +0200 Message-Id: <20221020162558.123284-11-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:miRbF8XmPPIVo36Hgwerp2xGh/AR8JjnQ9DYPzzxLv/mzcAhQFg zjN1264BCbX+huQmE9ievAtnZNjENN+iON1HPX45qEKLtqM19o6iLOcsAJ2wYIPYNhMB1SL lud7eyd9+vNPRcz0l5104H/OVjvlHopkQXQHguhjm3f6V1mXv20ACgheEKIwbbj2prftbJ2 1DtFv9lLtwy0tbO/ZZadg== X-UI-Out-Filterresults: notjunk:1;V03:K0:4mp9Q+BOdkQ=:fdjwWaMaqV7dC6kYmoEGAx wTmUrycifD9wndYsd1pYn3kTVntF6dTuDtDRnWpLqBEFx26Aw8oHUTii0r6FiU4YNgGIpInk2 /n6MmuuDNvkx6tGUCghJFr9OyRmD5yDNj0ALYEDspSVG9GvQpDwVRyURNc7Y+3gcTJK3KNVQ9 KAE4Mafcj66obvpgPC5/0jB/PdUos7kFEKUlJ6KWOYO/zlTWVu4mh6SbYLx9AkOQjTNwTFmVy 65eyuum2mvnrydzwSlGYDk9KltwUoga+R98DSobcG10Twus45GUBjzeyxDZOdg8fEdzpFzB9v fwx7jWtcfTYFBgUrFt8wJT9ZJ/19iOH+x/g32zNLg1XZesAr1SgoHYmakT8e004z0C5SBkZZB 4aHP2HZ9ahpJVVni6aYRNe3Zm1b3zXnU6UJ5N1BVIiCtpdsaZnUuDjWHRY4ibxSfCmh+BTAJS zrej3TJAh2HFb9SaKjHqOOEp0eiv2hwwD75X8lCZG7JtuzuFGRNtzocbQHlLkBH+hqXkIAPOt ZmhL+PNDtt8sLxeJYtpV7E6553zpQz0qf9y2TJBz+U2ylt8QfLuQYm8t43c5GLK2yAvDcOjHq 8nuK3BgFkhoRUUB8+RUevekiYQhOCfhDeAmOWGX7yrLKavSw9LFM9tGyIN7QgI8eBWbO1k7l8 k7RImnE8Mp+DWBbZ2MZC/yHO0eywyXFg2qQhrKvhA8dTSKx/e39uyNrBM+/eQlHSySqS8I2hL 9xDkecNT3uL1pG7cIDM3uEi1wZMwxfkX2DcboRzxEvGYdcXpBYQZiMNhe3XtIfjLWsa9QEm51 xSPNcKM Received-SPF: permerror client-ip=212.227.126.131; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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. Rename it dest_addr, and store socket length in dest_len. Signed-off-by: Laurent Vivier Reviewed-by: Stefano Brivio Acked-by: Michael S. Tsirkin Reviewed-by: Philippe Mathieu-Daudé --- net/dgram.c | 82 ++++++++++++++++++++++++++++++++++------------------- 1 file changed, 53 insertions(+), 29 deletions(-) diff --git a/net/dgram.c b/net/dgram.c index 5339585b8202..e20be9ca79d3 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -40,9 +40,11 @@ typedef struct NetDgramState { NetClientState nc; int fd; SocketReadState rs; - struct sockaddr_in dgram_dst; /* contains destination iff connectionless */ bool read_poll; /* waiting to receive data? */ bool write_poll; /* waiting to transmit data? */ + /* contains destination iff connectionless */ + struct sockaddr *dest_addr; + socklen_t dest_len; } NetDgramState; static void net_dgram_send(void *opaque); @@ -84,10 +86,8 @@ static ssize_t net_dgram_receive(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->dest_addr) { + ret = sendto(s->fd, buf, size, 0, s->dest_addr, s->dest_len); } else { ret = send(s->fd, buf, size, 0); } @@ -244,6 +244,9 @@ static void net_dgram_cleanup(NetClientState *nc) close(s->fd); s->fd = -1; } + g_free(s->dest_addr); + s->dest_addr = NULL; + s->dest_len = 0; } static NetClientInfo net_dgram_socket_info = { @@ -260,7 +263,7 @@ static NetDgramState *net_dgram_fd_init(NetClientState *peer, SocketAddress *mcast, Error **errp) { - struct sockaddr_in saddr; + struct sockaddr_in *saddr = NULL; int newfd; NetClientState *nc; NetDgramState *s; @@ -275,31 +278,32 @@ static NetDgramState *net_dgram_fd_init(NetClientState *peer, qapi_free_SocketAddress(sa); /* - * fd passed: multicast: "learn" dgram_dst address from bound address and + * fd passed: multicast: "learn" dest_addr 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) { + 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); @@ -311,21 +315,20 @@ static NetDgramState *net_dgram_fd_init(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->dest_addr == NULL); + s->dest_addr = (struct sockaddr *)saddr; + s->dest_len = sizeof(*saddr); qemu_set_info_str(nc, "fd=%d (cloned mcast=%s:%d)", fd, - inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + inet_ntoa(saddr->sin_addr), ntohs(saddr->sin_port)); } else { - if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { - s->dgram_dst.sin_family = AF_UNIX; - } - qemu_set_info_str(nc, "fd=%d %s", fd, SocketAddressType_str(sa_type)); } return s; err: + g_free(saddr); closesocket(fd); return NULL; } @@ -339,21 +342,24 @@ 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 { @@ -362,13 +368,15 @@ 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; @@ -376,16 +384,19 @@ 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; } @@ -395,13 +406,17 @@ 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->dest_addr == NULL); + s->dest_addr = (struct sockaddr *)saddr; + s->dest_len = sizeof(*saddr); + + qemu_set_info_str(&s->nc, "mcast=%s:%d", inet_ntoa(saddr->sin_addr), + ntohs(saddr->sin_port)); - qemu_set_info_str(&s->nc, "mcast=%s:%d", inet_ntoa(saddr.sin_addr), - ntohs(saddr.sin_port)); return 0; } @@ -412,9 +427,10 @@ int net_init_dgram(const Netdev *netdev, const char *name, { NetDgramState *s; int fd, ret; - struct sockaddr_in raddr_in; - struct sockaddr_in laddr_in; SocketAddress *remote, *local; + struct sockaddr *dest_addr; + struct sockaddr_in laddr_in, raddr_in; + socklen_t dest_len; assert(netdev->type == NET_CLIENT_DRIVER_DGRAM); @@ -491,6 +507,10 @@ int net_init_dgram(const Netdev *netdev, const char *name, return -1; } qemu_socket_set_nonblock(fd); + + dest_len = sizeof(raddr_in); + dest_addr = g_malloc(dest_len); + memcpy(dest_addr, &raddr_in, dest_len); break; case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); @@ -503,6 +523,8 @@ int net_init_dgram(const Netdev *netdev, const char *name, name, fd); return -1; } + dest_addr = NULL; + dest_len = 0; break; default: error_setg(errp, "only support inet or fd type for local"); @@ -515,7 +537,9 @@ int net_init_dgram(const Netdev *netdev, const char *name, } if (remote) { - s->dgram_dst = raddr_in; + g_assert(s->dest_addr == NULL); + s->dest_addr = dest_addr; + s->dest_len = dest_len; } switch (local->type) { From patchwork Thu Oct 20 16:25:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013845 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 DC4BEC4332F for ; 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Thu, 20 Oct 2022 18:26:21 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard , Stefano Brivio Subject: [PATCH v13 12/17] net: dgram: add unix socket Date: Thu, 20 Oct 2022 18:25:53 +0200 Message-Id: <20221020162558.123284-13-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:alvdcWL/VgvS671yN91mMLL08XAvN+/+sIJ5RLxMGDrUJXTaxYt p+1sHClivcrUIarOFspBYCZNiMr0gWwmJQlc9CG9570Lllx6wTMvGsxYxTK82GDRt/ceC0Y mRc1YbyH8CX0yjdTtN5meDzilYi3LfEvBnRJFtQGipPGNDVVcnNGNHzCTLxdB5EnszcmW6f xKhXJNJ+2M7j9DL53ugNw== X-UI-Out-Filterresults: notjunk:1;V03:K0:aCCgGcsMsyE=:+UnZdn2Mo7dA5J0IXycQ/p 5kVp8VtV3IHONGyNd+MTf+zJpHJsGkD6/RBtUcyOOvbsKdgqUQAg+jYhH7EGAElaINPXm59UU 1AWK1+sfp8nWblhs5oMvQwENRYLKk5D4vP20K8iV49TN86cGX30CBi5CMpYxzx44Ao5MZfNvf 8OI4F+7zxqyaF/+HW2hvBz272iFc/jmn+NXu9+cZB1drbUN3GRJ2dNMOyW3Zq1XiQwY3PmaVM i9pY/Hrd0N7G0NL/53xadFl2FrEsYVm4pwspAA8oA7MIXegMuwnRDD8oPxuspmBWSFKaQS1wg 1RAD6oVLPkQUg+ALfmSLAZDtJWn5PiGBr7NnUl5stVAQOxoqHA9O5GQFeWBKFGJRYy3y/ykgC xw1pIDh9ISSysfJclPxAM3SKRV034Uc5PBb0kbUqy5Gke8v4d0UV0WVpAzKvCJJfjPHRKe/PF UDcrA0H6MY1/53fChJ1yXYtpNY7WDheUgQuWnVX4lLXDgtj8PwIVxqHnTAWuLluEvmce7azj/ D9XiZb9qkFjQ5izeMXYs/FkAigjhS+ZujG3goa+HoP96L5cgt7CGud6qf3mj0SQwFQeLoAMX4 /Mrc+cBEH1UVY4R57cXn/EJZNsR0+zaemWS2HHh1pS+yP9mE53+nmUkqS1ZwOP31cTlrFRKx9 DfEYMua6fFtOxW69D+Cw27zzbX67ClNfhjBf1RdUnw1LvdYImWWDJK9hEzjZJC8tKJeF15D4Q uX3VYxc59LdSXBAVj1uieEJvp7m6J8JEPQuszO5xbKEjD5h0KoTVZk4wzNbxL8sjfcNPqiXtE zFrjVjE Received-SPF: permerror client-ip=212.227.126.187; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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 Reviewed-by: David Gibson Acked-by: Michael S. Tsirkin Acked-by: Markus Armbruster (QAPI schema) --- net/dgram.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++- qapi/net.json | 2 +- qemu-options.hx | 1 + 3 files changed, 56 insertions(+), 2 deletions(-) diff --git a/net/dgram.c b/net/dgram.c index e581cc62f39f..9f7bf3837653 100644 --- a/net/dgram.c +++ b/net/dgram.c @@ -426,6 +426,7 @@ int net_init_dgram(const Netdev *netdev, const char *name, SocketAddress *remote, *local; struct sockaddr *dest_addr; struct sockaddr_in laddr_in, raddr_in; + struct sockaddr_un laddr_un, raddr_un; socklen_t dest_len; assert(netdev->type == NET_CLIENT_DRIVER_DGRAM); @@ -465,7 +466,8 @@ int net_init_dgram(const Netdev *netdev, const char *name, } } else { if (local->type != SOCKET_ADDRESS_TYPE_FD) { - error_setg(errp, "type=inet requires remote parameter"); + error_setg(errp, + "type=inet or type=unix requires remote parameter"); return -1; } } @@ -508,6 +510,53 @@ int net_init_dgram(const Netdev *netdev, const char *name, dest_addr = g_malloc(dest_len); memcpy(dest_addr, &raddr_in, dest_len); break; + case SOCKET_ADDRESS_TYPE_UNIX: + 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); + + dest_len = sizeof(raddr_un); + dest_addr = g_malloc(dest_len); + memcpy(dest_addr, &raddr_un, dest_len); + break; case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), local->u.fd.str, errp); if (fd == -1) { @@ -546,6 +595,10 @@ int net_init_dgram(const Netdev *netdev, const char *name, inet_ntoa(raddr_in.sin_addr), ntohs(raddr_in.sin_port)); break; + case SOCKET_ADDRESS_TYPE_UNIX: + qemu_set_info_str(&s->nc, "udp=%s:%s", + laddr_un.sun_path, raddr_un.sun_path); + break; case SOCKET_ADDRESS_TYPE_FD: { SocketAddress *sa; SocketAddressType sa_type; diff --git a/qapi/net.json b/qapi/net.json index aed4ce1a97ff..39388b1b6c41 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -600,7 +600,7 @@ # @remote: remote address # @local: local address # -# Only SocketAddress types 'inet' and 'fd' are supported. +# Only SocketAddress types 'unix', 'inet' and 'fd' are supported. # # If remote address is present and it's a multicast address, local address # is optional. Otherwise local address is required and remote address is diff --git a/qemu-options.hx b/qemu-options.hx index 98e2595df93b..fafb214cb89f 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2782,6 +2782,7 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev, " 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=addr,local.port=port[,remote.type=inet,remote.host=addr,remote.port=port]\n" + "-netdev dgram,id=str,local.type=unix,local.path=path[,remote.type=unix,remote.path=path]\n" "-netdev dgram,id=str,local.type=fd,local.str=file-descriptor\n" " configure a network backend to connect to another network\n" " using an UDP tunnel\n" From patchwork Thu Oct 20 16:25:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013837 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 D57C9C4332F for ; Thu, 20 Oct 2022 17:02:56 +0000 (UTC) Received: from localhost ([::1]:56286 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYwT-00073E-4A for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 13:02:49 -0400 Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYte-0000Gy-0F for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:59:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51520) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNY-0004vj-CR for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:49 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:40771) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNT-00075X-4M for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:41 -0400 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1Mrfgi-1pQKd20mvc-00nhOZ; Thu, 20 Oct 2022 18:26:24 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard Subject: [PATCH v13 14/17] qemu-sockets: update socket_uri() and socket_parse() to be consistent Date: Thu, 20 Oct 2022 18:25:55 +0200 Message-Id: <20221020162558.123284-15-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:+ectAVqzfLD15RXOAboSW3vFM9WAMIl+dKYc44wjvozpI/tnzCg rIHwidp7p6z4neTDyrqjXnNdb99F8rcFN2Fb3sFzWZhVQig7/+/rFeVFcjau2JFoXCJ7afc +TfUoXy8bp7kK7So5HyWZacTiwvibMDxLrmDklbleVKODWI9VqKavvrpXTAVsRv+Egkz1Rg 1yFSDd+Ix1NcJBg3D6+9w== X-UI-Out-Filterresults: notjunk:1;V03:K0:mqueEkZiLpI=:ZsBOK4LEkS1/vUbVwLaoDM 8HI4IqMr5O02EcQqqGensyZ6To9atfEtIeDMvZuBSlzGB58fKPLT+NkrsYGDW8G0EaE8kZPOk NUbx8GM4oVLfXAfgbLW/VpIcowNXHb3lEM3Bfeh4d7ciqAWBF27lfxn11IQb11P69Ix8ORVGK kYPyA+J78WTPGOC81ak2COzmUDejbIwe7BVHieVT9DDAY2K0V6DQyVHlSl69dFRClgnQ4qPOX 6lNljdIIgOIFzngadIe3bYKtal9gLZz/n9TiVygip5W0Nc63lGCTXueAnawFYeRfOTilIyFdC Vcj3kvXUPvYOwl4RRo5KUZnYxeEXL4eznjhmtvSuJ5CvfvUnM3qAAXE/ynVEiWS8CP5ihKzK2 gZWUx86yAB25wZSSxt19jvjHh8EC/kooPUw1crWV50G6enFqdLLuNjOqbsBnGzi3rebmbH5zP Mpy+DsjtSBuXIH7fTl7Aqm9jjpudYWsHVPU4UyHfW2trEyNEeoYph+HoOJdn7zbDIoF8Eocxz 2fk+mI/Ex0nerLai2o4sVWxsi5TN45B7ZFzR6tFyZs+RoG8CNOFtwT+ang7P1WaHpQc39vwfB eA28YTbfNRJqXtXqZ5jmxO9BvHYh1VJzV3JDOYmqM1YaRu7Irlx0eOj8SEr54EEivxAkew7pn 5ehmmTwjFdHroRFGHMRf7zh233ZUKOiugxRol6yzTOboaB3ZhvJxMfB9so2QEqm4YbLx/veQB DhSSBHrCpfhgZndtjMZyeWpMQLfpq+dVSkVdqby0/pDFjdC4dNIYyC9GDvW00uAw5SMaB+qUR 1bTOaJ6 Received-SPF: permerror client-ip=212.227.126.133; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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" To be consistent with socket_uri(), add 'tcp:' prefix for inet type in socket_parse(), by default socket_parse() use tcp when no prefix is provided (format is host:port). In socket_uri(), use 'vsock:' prefix for vsock type rather than 'tcp:' because it makes a vsock address look like an inet address with CID misinterpreted as host. Goes back to commit 9aca82ba31 "migration: Create socket-address parameter" Signed-off-by: Laurent Vivier Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Markus Armbruster Reviewed-by: David Gibson Acked-by: Michael S. Tsirkin --- util/qemu-sockets.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c index 9f6f655fd526..a9926af714c4 100644 --- a/util/qemu-sockets.c +++ b/util/qemu-sockets.c @@ -1090,7 +1090,7 @@ char *socket_uri(SocketAddress *addr) 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", + return g_strdup_printf("vsock:%s:%s", addr->u.vsock.cid, addr->u.vsock.port); default: @@ -1124,6 +1124,11 @@ SocketAddress *socket_parse(const char *str, Error **errp) if (vsock_parse(&addr->u.vsock, str + strlen("vsock:"), errp)) { goto fail; } + } else if (strstart(str, "tcp:", NULL)) { + addr->type = SOCKET_ADDRESS_TYPE_INET; + if (inet_parse(&addr->u.inet, str + strlen("tcp:"), errp)) { + goto fail; + } } else { addr->type = SOCKET_ADDRESS_TYPE_INET; if (inet_parse(&addr->u.inet, str, errp)) { From patchwork Thu Oct 20 16:25:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013781 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 DD93DC433FE for ; Thu, 20 Oct 2022 16:53:04 +0000 (UTC) Received: from localhost ([::1]:50956 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYmw-0002RX-6T for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:52:59 -0400 Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYmo-0006Po-CE for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:52:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36728) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNa-0004wA-Ga for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:50 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:51173) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNT-00075k-3r for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:46 -0400 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1Mr7iw-1pQsat2rCA-00oFcr; Thu, 20 Oct 2022 18:26:26 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard Subject: [PATCH v13 15/17] net: stream: move to QIO to enable additional parameters Date: Thu, 20 Oct 2022 18:25:56 +0200 Message-Id: <20221020162558.123284-16-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:aMEYmU78BvxSoMnxP3BBKag1qgqhI/bWeRU1EAeMR5mi8r2Jlcr XlK0sebTgu8tNHoNn/M/yAuZgfzFOTvmDme+c65IN4tcxGfZEpD6sxZkX2ORy6gApKSSAPC 01wUtIUng/6A6KjIsQeA/xRRzxvFY7hh4+nub8Vw+LCbLMgblif3+84HHL8LKZDGgRieCpn EmlU/Xd0C+2PCGipM/cXw== X-UI-Out-Filterresults: notjunk:1;V03:K0:wSIhSpC8Rgk=:TdzFbgBY2SggA1TXQDW5zH EmJYKRTmDqvSZiGYqvuhwkKqhQFnONEdrrE7Kaiddjz5hM0BNPDLOjzzG0sIrc92n7+7aOdy2 LfHFl1QgF3qOnrOVLxQnw/c0cCzGt6S7OLDNVQeDDWKfq+7VKoZ1/wd1wMM2/eb+SdbUSItXk SsytVvKeB0N5tz/pXXCHPvnGrYVTKdSVoyQCCGZaREM92YhcHuRLtu76OAyVPg3pwSsIJ4Nrx sYIScg35Hpl6Me/m4Gu9SK20e3jezYvWSeDVRdYGCS4UXx8YwRhHDmVVw9RAFdqTPTwKcwQII jBIVT0xWUikE2fngrLsA5xc0uM6jTIO28ypnLlDg4+nPCFK+6b2XpmPHnMIRc/+bS8YbHwsOw EAym4RlAg36oeG54+QJZmyG89arAOu1eOCd4EQqx+iagXRIMRdF9Q7KMBuZ7KCDHs07mrnE87 NdEN/js4wysQzVyUvINv1MB3IlB9+eT2Ywfp0XvGVUdU/hkW0AcQZkmPkja+vqbcfovna4WzN oBeROiQW7zeVUVZ3E6w5zscM0USP4yS52F2pWaJUzoVt2fBKyv43TFKygBwUcFEaEqUaaTZsd X/MkaFPou20e9TZHo8O8dUkC1u3X2ZpGPkHGIgS/WvuwOobNt10turZWXpwIbaFHaX01SOCon eOzvuC6Q5vTYVBL7XsuxYj6yLSsG596LjLiT5oWC971XkE6W3flpAKiq7cq7nX/wuRl0qawse zc0jvuEq3gR+zh74tcAqG0t/npd2aAsWPzkrdAZYFTvd7VqjwWObQnGF+V3jrOCXyG6Vuy7L4 Q47yOQU Received-SPF: permerror client-ip=212.227.126.133; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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. This allows net/stream to use all the available parameters provided by SocketAddress. Signed-off-by: Laurent Vivier Acked-by: Michael S. Tsirkin --- net/stream.c | 493 +++++++++++++++++------------------------------- qemu-options.hx | 4 +- 2 files changed, 179 insertions(+), 318 deletions(-) diff --git a/net/stream.c b/net/stream.c index 884f473018da..95d6b910407d 100644 --- a/net/stream.c +++ b/net/stream.c @@ -35,48 +35,36 @@ #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*/ - bool read_poll; /* waiting to receive data? */ - bool write_poll; /* waiting to transmit data? */ } NetStreamState; -static void net_stream_send(void *opaque); -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 ? net_stream_send : 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, @@ -93,13 +81,15 @@ 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); - - if (ret == -1 && errno == EAGAIN) { + 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 == QIO_CHANNEL_ERR_BLOCK) { ret = 0; /* handled further down */ } if (ret == -1) { @@ -108,19 +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); } } @@ -131,19 +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; @@ -151,51 +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; } - closesocket(s->fd); + if (s->listener) { + qio_net_listener_set_client_func(s->listener, net_stream_listen, + s, NULL); + } + 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; qemu_set_info_str(&s->nc, ""); - 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; - net_stream_read_poll(s, true); -} - static NetClientInfo net_stream_info = { .type = NET_CLIENT_DRIVER_STREAM, .size = sizeof(NetStreamState), @@ -203,76 +216,67 @@ static NetClientInfo net_stream_info = { .cleanup = net_stream_cleanup, }; -static NetStreamState *net_stream_fd_init(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; - - nc = qemu_new_net_client(&net_stream_info, peer, model, name); + NetStreamState *s = opaque; + SocketAddress *addr; + char *uri; - qemu_set_info_str(nc, "fd=%d", fd); + object_ref(OBJECT(cioc)); - s = DO_UPCAST(NetStreamState, nc, nc); + qio_net_listener_set_client_func(s->listener, NULL, s, NULL); - s->fd = fd; - s->listen_fd = -1; - net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); + s->ioc = QIO_CHANNEL(cioc); + qio_channel_set_name(s->ioc, "stream-server"); + s->nc.link_down = false; - /* Disable Nagle algorithm on TCP sockets to reduce latency */ - socket_set_nodelay(fd); + s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN, net_stream_send, + s, NULL); - if (is_connected) { - net_stream_connect(s); + if (cioc->localAddr.ss_family == AF_UNIX) { + addr = qio_channel_socket_get_local_address(cioc, NULL); } else { - qemu_set_fd_handler(s->fd, NULL, net_stream_connect, s); + addr = qio_channel_socket_get_remote_address(cioc, NULL); } - return s; + g_assert(addr != NULL); + uri = socket_uri(addr); + qemu_set_info_str(&s->nc, uri); + g_free(uri); + qapi_free_SocketAddress(addr); + } -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; - } - } + QIOChannelSocket *listen_sioc = QIO_CHANNEL_SOCKET(s->listen_ioc); + SocketAddress *addr; + int ret; - 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; - - qemu_set_info_str(&s->nc, "connection from %s:%d", - inet_ntoa(saddr_in->sin_addr), - ntohs(saddr_in->sin_port)); - break; + if (listen_sioc->fd < 0) { + qemu_set_info_str(&s->nc, "connection error"); + return; } - case AF_UNIX: { - struct sockaddr_un saddr_un; - len = sizeof(saddr_un); - getsockname(s->listen_fd, (struct sockaddr *)&saddr_un, &len); - qemu_set_info_str(&s->nc, "connect from %s", saddr_un.sun_path); - break; - } - default: - g_assert_not_reached(); + 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) { + qemu_set_info_str(&s->nc, "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, @@ -283,105 +287,61 @@ static int net_stream_server_init(NetClientState *peer, { 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; - } + QIOChannelSocket *listen_sioc = qio_channel_socket_new(); - 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); + nc = qemu_new_net_client(&net_stream_info, peer, model, name); + s = DO_UPCAST(NetStreamState, nc, nc); - socket_set_fast_reuse(fd); + s->listen_ioc = QIO_CHANNEL(listen_sioc); + qio_channel_socket_listen_async(listen_sioc, addr, 0, + net_stream_server_listening, s, + NULL, NULL); - 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: { - 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; - } + return 0; +} - 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)); - return -1; - } +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; - 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: - error_setg(errp, "only support inet or fd type"); - return -1; + if (sioc->fd < 0) { + qemu_set_info_str(&s->nc, "connection error"); + goto error; } - ret = listen(fd, 0); - if (ret < 0) { - error_setg_errno(errp, errno, "can't listen on socket"); - closesocket(fd); - return -1; + addr = qio_channel_socket_get_remote_address(sioc, NULL); + g_assert(addr != NULL); + uri = socket_uri(addr); + qemu_set_info_str(&s->nc, uri); + g_free(uri); + + ret = qemu_socket_try_set_nonblock(sioc->fd); + if (addr->type == SOCKET_ADDRESS_TYPE_FD && ret < 0) { + qemu_set_info_str(&s->nc, "can't use file descriptor %s (errno %d)", + addr->u.fd.str, -ret); + qapi_free_SocketAddress(addr); + goto error; } + 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); + s->nc.link_down = false; + + return; +error: + object_unref(OBJECT(s->ioc)); + s->ioc = NULL; } static int net_stream_client_init(NetClientState *peer, @@ -391,118 +351,19 @@ static int net_stream_client_init(NetClientState *peer, Error **errp) { NetStreamState *s; - struct sockaddr_in saddr_in; - struct sockaddr_un saddr_un; - int fd, connected, ret; - - switch (addr->type) { - case SOCKET_ADDRESS_TYPE_INET: - if (convert_host_port(&saddr_in, addr->u.inet.host, addr->u.inet.port, - errp) < 0) { - return -1; - } + NetClientState *nc; + QIOChannelSocket *sioc = qio_channel_socket_new(); - 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; - } - } - break; - case SOCKET_ADDRESS_TYPE_UNIX: - 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)); - return -1; - } + nc = qemu_new_net_client(&net_stream_info, peer, model, name); + s = DO_UPCAST(NetStreamState, nc, nc); - 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; - } - } - 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; - break; - default: - error_setg(errp, "only support inet, unix or fd type"); - return -1; - } + s->ioc = QIO_CHANNEL(sioc); + s->nc.link_down = true; + + qio_channel_socket_connect_async(sioc, addr, + net_stream_client_connected, s, + NULL, NULL); - s = net_stream_fd_init(peer, model, name, fd, connected); - - switch (addr->type) { - case SOCKET_ADDRESS_TYPE_INET: - qemu_set_info_str(&s->nc, "connect to %s:%d", - inet_ntoa(saddr_in.sin_addr), - ntohs(saddr_in.sin_port)); - break; - case SOCKET_ADDRESS_TYPE_UNIX: - qemu_set_info_str(&s->nc, " connect to %s", saddr_un.sun_path); - break; - case SOCKET_ADDRESS_TYPE_FD: - qemu_set_info_str(&s->nc, "connect to fd %d", fd); - break; - default: - g_assert_not_reached(); - } return 0; } diff --git a/qemu-options.hx b/qemu-options.hx index fafb214cb89f..a91f96a264cc 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2772,8 +2772,8 @@ 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=unix,addr.path=path\n" + "-netdev stream,id=str[,server=on|off],addr.type=inet,addr.host=host,addr.port=port[,to=maxport][,numeric=on|off][,keep-alive=on|off][,mptcp=on|off][,addr.ipv4=on|off][,addr.ipv6=on|off]\n" + "-netdev stream,id=str[,server=on|off],addr.type=unix,addr.path=path[,abstract=on|off][,tight=on|off]\n" "-netdev stream,id=str[,server=on|off],addr.type=fd,addr.str=file-descriptor\n" " configure a network backend to connect to another network\n" " using a socket connection in stream mode.\n" From patchwork Thu Oct 20 16:25:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13013842 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 0236EC433FE for ; Thu, 20 Oct 2022 17:13:06 +0000 (UTC) Received: from localhost ([::1]:55710 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olZ61-0006w3-UV for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 13:13:01 -0400 Received: from [::1] (helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1olYn6-0000VC-Si for qemu-devel@archiver.kernel.org; Thu, 20 Oct 2022 12:53:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36726) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNZ-0004vx-U1 for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:50 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:49735) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1olYNY-00076l-1X for qemu-devel@nongnu.org; Thu, 20 Oct 2022 12:26:45 -0400 Received: from lenovo-t14s.redhat.com ([82.142.8.70]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MZjQl-1oZbU20G99-00WrGW; Thu, 20 Oct 2022 18:26:29 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: Paul Durrant , Markus Armbruster , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , "Dr. David Alan Gilbert" , Greg Kurz , Stefano Stabellini , David Gibson , Eric Blake , xen-devel@lists.xenproject.org, "Michael S. Tsirkin" , Stefan Weil , Paolo Bonzini , Jason Wang , Laurent Vivier , Samuel Thibault , Anthony Perard Subject: [PATCH v13 17/17] net: stream: add QAPI events to report connection state Date: Thu, 20 Oct 2022 18:25:58 +0200 Message-Id: <20221020162558.123284-18-lvivier@redhat.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221020162558.123284-1-lvivier@redhat.com> References: <20221020162558.123284-1-lvivier@redhat.com> MIME-Version: 1.0 X-Provags-ID: V03:K1:/ClPY+RmgtMJu78OIyrUAFsndfiBsAICuefcqDMPSEUykumV0oa pkrYmgXaQFb5pQIxSkTSbWXazvyzPdwvk/fjh939ixbylrzgqZ/7RoPwrc1xEwcy/vgZkcN qGlrYM6PIrRSop4JFwQOc9JRH9CnL9g6Y9k8lWtVRGWDt1s0iAYyqD4rk8JnoNQVwyinU9V Ks0dXXubYDsT6m7LFNcpQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:wft59S4V5ag=:5S5861xC8QSUT3tMI6YJY1 TlKIXQ427MOcEguuHzrJxelhJZFyH6FHOudFJoiU4IIhl4IQVyE6FtlwcSRka3QDS5FxIL5s3 RzXxYqoXpTanRztWq0kvCyf2gYuc0E3SReGwioIXfnawtdZicLv8zpajqcqz1qRIIX+NwsLBE FeuIhrHyZwBX1Cn7BBILjJBTALpJ7WTygDJlcxt4DHvz+Rm+rmQG2zGJagrhmefvRTi7IVlpv +ds07+O9meFjmO4yhzJ/3AmFNxJftcINwK2AK6I8o8/i7ZnxhqsDiYStI/KflJbo9tLvpktK8 ghswShpPclP0xf2y6DOCa65huqAvKnbp/aIuNTPvIWgZnuBgmZ3I9G6gj2QvJ9/IKdywRqGrs /iFf/DSk9RMDzBTadb9mcyPoX52k1xqcXIsihmATfywXvVXjdwQ5vkWRw+ahxUwLIdrKnXNo/ YrZPDCGOCXO+qt/y5wAeiUTpZsHRiU8JK6FbcHDyC9swANj+pwOFcge6AeQAXkpZoF+9n/Dnk uNVy/MLTJqysqkgFUe4wFBv9WEnDOF2fzdHCbzts5mHL3eI5wCxoazhnG+EUksQEtVrfWJlla reGY84PqqsplbFUcWh4IPZAc9rtkMbt9t/HZnFyROlanMTl9U36MIxcYFh2Q1w/APmh0U4b2b Vl1jmS0jVQrm986YyIqtoyksrGOEVS2OkMFuXsoBmlSdk0USe8dIloMKOQOXWbg0BRR1iQzbp fJCPr80rMIK8z+JqVKuvpHBobLIGxy+usrrIhrZL8CTNp2KTT3ou3mQpucOC0Zc1lyhqokfUE IiR7q+q Received-SPF: permerror client-ip=212.227.126.133; envelope-from=lvivier@redhat.com; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_FAIL=0.001, SPF_HELO_NONE=0.001 autolearn=no 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 netdev reports NETDEV_STREAM_CONNECTED event when the backend is connected, and NETDEV_STREAM_DISCONNECTED when it is disconnected. The NETDEV_STREAM_CONNECTED event includes the URI of the destination address. Signed-off-by: Laurent Vivier Acked-by: Michael S. Tsirkin --- net/stream.c | 9 +++++++-- qapi/net.json | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 56 insertions(+), 2 deletions(-) diff --git a/net/stream.c b/net/stream.c index 95d6b910407d..cac01d4d792a 100644 --- a/net/stream.c +++ b/net/stream.c @@ -38,6 +38,7 @@ #include "io/channel.h" #include "io/channel-socket.h" #include "io/net-listener.h" +#include "qapi/qapi-events-net.h" typedef struct NetStreamState { NetClientState nc; @@ -168,6 +169,8 @@ static gboolean net_stream_send(QIOChannel *ioc, s->nc.link_down = true; qemu_set_info_str(&s->nc, ""); + qapi_event_send_netdev_stream_disconnected(s->nc.name); + return G_SOURCE_REMOVE; } buf = buf1; @@ -244,8 +247,8 @@ static void net_stream_listen(QIONetListener *listener, uri = socket_uri(addr); qemu_set_info_str(&s->nc, uri); g_free(uri); + qapi_event_send_netdev_stream_connected(s->nc.name, addr); qapi_free_SocketAddress(addr); - } static void net_stream_server_listening(QIOTask *task, gpointer opaque) @@ -327,7 +330,6 @@ static void net_stream_client_connected(QIOTask *task, gpointer opaque) goto error; } g_assert(ret == 0); - qapi_free_SocketAddress(addr); net_socket_rs_init(&s->rs, net_stream_rs_finalize, false); @@ -338,6 +340,9 @@ static void net_stream_client_connected(QIOTask *task, gpointer opaque) s, NULL); s->nc.link_down = false; + qapi_event_send_netdev_stream_connected(s->nc.name, addr); + qapi_free_SocketAddress(addr); + return; error: object_unref(OBJECT(s->ioc)); diff --git a/qapi/net.json b/qapi/net.json index 39388b1b6c41..c37b24717382 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -895,3 +895,52 @@ ## { 'event': 'FAILOVER_NEGOTIATED', 'data': {'device-id': 'str'} } + +## +# @NETDEV_STREAM_CONNECTED: +# +# Emitted when the netdev stream backend is connected +# +# @netdev-id: QEMU netdev id that is connected +# @addr: The destination address +# +# Since: 7.2 +# +# Example: +# +# <- { "event": "NETDEV_STREAM_CONNECTED", +# "data": { "netdev-id": "netdev0", +# "addr": { "port": "47666", "ipv6": true, +# "host": "::1", "type": "inet" } }, +# "timestamp": { "seconds": 1666269863, "microseconds": 311222 } } +# +# or +# +# <- { "event": "NETDEV_STREAM_CONNECTED", +# "data": { "netdev-id": "netdev0", +# "addr": { "path": "/tmp/qemu0", "type": "unix" } }, +# "timestamp": { "seconds": 1666269706, "microseconds": 413651 } } +# +## +{ 'event': 'NETDEV_STREAM_CONNECTED', + 'data': { 'netdev-id': 'str', + 'addr': 'SocketAddress' } } + +## +# @NETDEV_STREAM_DISCONNECTED: +# +# Emitted when the netdev stream backend is disconnected +# +# @netdev-id: QEMU netdev id that is disconnected +# +# Since: 7.2 +# +# Example: +# +# <- { 'event': 'NETDEV_STREAM_DISCONNECTED', +# 'data': {'netdev-id': 'netdev0'}, +# 'timestamp': {'seconds': 1663330937, 'microseconds': 526695} } +# +## +{ 'event': 'NETDEV_STREAM_DISCONNECTED', + 'data': { 'netdev-id': 'str' } }