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bh=keZnHuG7P8xBB9h7Yrga9Zc6p1ydIWQxCuNT1SYHShk=; b=OOqeFHazW3WCJ0EQzRfiblgBOIPJK8Rb9G+FZqYeV4wVHY7wK9nv6kovWHfXshdDBDyFzD 7nm1OggGFJAYVxRP64GsgcMo7SRZsHTXoMinT4RwHNt8K8K+tVD3qAc1MQBWF7jFx91f0V Q72fNByvyrIUzamx9/n8cVlq148ZFV8= X-MC-Unique: jGZWedWRNMywk1aHm32JFA-1 From: Dehan Meng To: qemu-devel@nongnu.org Cc: demeng@redhat.com, kkostiuk@redhat.com, michael.roth@amd.com Subject: [PATCH] qga/linux: Add new api 'guest-network-get-route' Date: Sat, 18 Nov 2023 10:24:28 +0800 Message-Id: <20231118022428.118778-1-demeng@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=demeng@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1700274419035100001 Content-Type: text/plain; charset="utf-8" The Route information of the Linux VM needs to be used by administrators and users when debugging network problems and troubleshooting. Signed-off-by: Dehan Meng --- qga/commands-posix.c | 82 ++++++++++++++++++++++++++++++++++++++++++++ qga/commands-win32.c | 6 ++++ qga/qapi-schema.json | 80 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 168 insertions(+) diff --git a/qga/commands-posix.c b/qga/commands-posix.c index 6169bbf7a0..83a3c46b3c 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -2747,6 +2747,82 @@ GuestCpuStatsList *qmp_guest_get_cpustats(Error **er= rp) return head; } =20 +char *hexToIPAddress(unsigned int hexValue, char ipAddress[16]); + +char *hexToIPAddress(unsigned int hexValue, char ipAddress[16]) +{ + unsigned int byte1 =3D (hexValue >> 24) & 0xFF; + unsigned int byte2 =3D (hexValue >> 16) & 0xFF; + unsigned int byte3 =3D (hexValue >> 8) & 0xFF; + unsigned int byte4 =3D hexValue & 0xFF; + + snprintf(ipAddress, 16, "%u.%u.%u.%u", byte4, byte3, byte2, byte1); + + return ipAddress; +} + +GuestNetworkRouteList *qmp_guest_network_get_route(Error **errp) +{ + GuestNetworkRouteList *head =3D NULL, **tail =3D &head; + const char *routeFile =3D "/proc/net/route"; + FILE *fp; + size_t n; + char *line =3D NULL; + + fp =3D fopen(routeFile, "r"); + if (fp =3D=3D NULL) { + error_setg_errno(errp, errno, "open(\"%s\")", routeFile); + return NULL; + } + + while (getline(&line, &n, fp) !=3D -1) { + GuestNetworkRoute *route =3D NULL; + GuestNetworkRouteStat *networkroute; + int i; + char Iface[16]; + unsigned int Destination, Gateway, Mask, Flags; + int RefCnt, Use, Metric, MTU, Window, IRTT; + + /* Parse the line and extract the values */ + i =3D (sscanf(line, "%s %X %X %x %d %d %d %X %d %d %d", + Iface, &Destination, &Gateway, &Flags, &RefCnt, + &Use, &Metric, &Mask, &MTU, &Window, &IRTT) =3D=3D 11); + if (i =3D=3D EOF) { + continue; + } + + route =3D g_new0(GuestNetworkRoute, 1); + route->type =3D GUEST_NETWORK_ROUTE_TYPE_LINUX; + + /* + *Additional logic to convert hex values to + *decimal and IP address format + */ + char DestAddress[16]; + char GateAddress[16]; + char MaskAddress[16]; + + networkroute =3D &route->u.q_linux; + networkroute->iface =3D g_strdup(Iface); + networkroute->destination =3D hexToIPAddress(Destination, DestAddr= ess); + networkroute->gateway =3D hexToIPAddress(Gateway, GateAddress); + networkroute->mask =3D hexToIPAddress(Mask, MaskAddress); + networkroute->metric =3D Metric; + networkroute->flags =3D Flags; + networkroute->refcnt =3D RefCnt; + networkroute->use =3D Use; + networkroute->mtu =3D MTU; + networkroute->window =3D Window; + networkroute->irtt =3D IRTT; + + QAPI_LIST_APPEND(tail, route); + } + + free(line); + fclose(fp); + return head; +} + #else /* defined(__linux__) */ =20 void qmp_guest_suspend_disk(Error **errp) @@ -3118,6 +3194,12 @@ GuestCpuStatsList *qmp_guest_get_cpustats(Error **er= rp) return NULL; } =20 +GuestNetworkRouteList *qmp_guest_network_get_route(Error **errp) +{ + error_setg(errp, QERR_UNSUPPORTED); + return NULL; +} + #endif /* CONFIG_FSFREEZE */ =20 #if !defined(CONFIG_FSTRIM) diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 697c65507c..e62c04800a 100644 --- a/qga/commands-win32.c +++ b/qga/commands-win32.c @@ -2522,3 +2522,9 @@ GuestCpuStatsList *qmp_guest_get_cpustats(Error **err= p) error_setg(errp, QERR_UNSUPPORTED); return NULL; } + +GuestNetworkRouteList *qmp_guest_network_get_route(Error **errp) +{ + error_setg(errp, QERR_UNSUPPORTED); + return NULL; +} diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json index 876e2a8ea8..eed9539bb7 100644 --- a/qga/qapi-schema.json +++ b/qga/qapi-schema.json @@ -1789,3 +1789,83 @@ { 'command': 'guest-get-cpustats', 'returns': ['GuestCpuStats'] } + +## +# @GuestNetworkRouteType: +# +# An enumeration of OS type +# +# Since: 8.2 +## +{ 'enum': 'GuestNetworkRouteType', + 'data': [ 'linux' ] } + +## +# @GuestNetworkRouteStat: +# +# Route information, currently, only linux supported. +# +# @iface: The destination network or host's egress network interface in th= e routing table +# +# @destination: The IP address of the target network or host, The final de= stination of the packet +# +# @gateway: The IP address of the next hop router +# +# @mask: Subnet Mask +# +# @metric: Route metric +# +# @flags: Route flags (not for windows) +# +# @irtt: Initial round-trip delay (not for windows) +# +# @refcnt: The route's reference count (not for windows) +# +# @use: Route usage count (not for windows) +# +# @window: TCP window size, used for flow control (not for windows) +# +# @mtu: Data link layer maximum packet size (not for windows) +# +# Since: 8.2 + +## +{ 'struct': 'GuestNetworkRouteStat', + 'data': {'iface': 'str', + 'destination': 'str', + 'gateway': 'str', + 'metric': 'int', + 'mask': 'str', + '*irtt': 'int', + '*flags': 'uint64', + '*refcnt': 'int', + '*use': 'int', + '*window': 'int', + '*mtu': 'int' + }} + +## +# @GuestNetworkRoute: +# +# Get route information of system. +# +# - @linux: Linux style network route +# +# Since: 8.2 +## +{ 'union': 'GuestNetworkRoute', + 'base': { 'type': 'GuestNetworkRouteType' }, + 'discriminator': 'type', + 'data': { 'linux': 'GuestNetworkRouteStat' } } + +## +# @guest-network-get-route: +# +# Retrieve information about route of network. +# Returns: List of route info of guest. +# +# Since: 8.2 +## +{ 'command': 'guest-network-get-route', + 'returns': ['GuestNetworkRoute'] +} --=20 2.35.1