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[178.133.125.224]) by smtp.gmail.com with ESMTPSA id d21-20020aa7c1d5000000b005027d31615dsm11708182edp.62.2023.05.01.00.39.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 May 2023 00:39:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20221208.gappssmtp.com; s=20221208; t=1682926774; x=1685518774; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=33AS8B1IZS6Hdu8UrCY4VxYkqsKGt4JXdzeanvC1mog=; b=0rB9pj96fe+Q8xHhNuxZg+SfX3MZKtOvjT0u/Hs0kMdeNcvUtPCwOUWnZ/HkcBdRik H+LkWfOkAWCVqoUO/JY6q73Zck0nrkysuXs6n3RmOIcD/W9duZFaxgsfJZFb0aaqaLs1 eQhP2UiZvzs9XeJg6Wh9W41I/SLvep985M5hKR14x8CJTJZhE3nbx5/rxVAPCyInyT/d M3x7DvOOhX2UCMO6LLYWu74hIPnTOO+NJh815QW/T1B5c3JY2hFi5DZ2UAYEXxBB9ozz 3oakdwFUhB0kBf2wOlTmk+rZEwhb9TqLIoFcR+WYj/FaDhumFGKOq0u4ZzjcqIE0adOD WhAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682926774; x=1685518774; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=33AS8B1IZS6Hdu8UrCY4VxYkqsKGt4JXdzeanvC1mog=; b=Z7F/qplJgFv5OcYjaYI2X1aO90fJ/sXVb8u7xGWbmH3p3j0xKdivkNDfPdIF2HtPWw V10uoqttRNd8tVGlktsVT9fbXzva1ANsocvtUT8KIFsM7s/GWZlJsnYoOus4G6U2WaG0 /3iBRMMcxSZPN5oscKb2lIQFF0W7gBup+XuU5GJ64EVMdZyZxWSq6Uq0d4sjwRd2foKX VfuKceKSUd0ge+o1SWRkyigRwdmxSvevj/2Y/BudVvXBftN6yV1eQdAlo1w4/w3G5JOl 5/cOe8oIzFoFL44a2LakvG7EvpS2VJ4RTeHi9+Z6LXhDMwk9b4+NbKSdTewxBGT7YW5G QbCA== X-Gm-Message-State: AC+VfDxl4GfjBc7CzcQav4KVmULSPkXoS4DAfp5xBGhBlU9RyVcyIgQs k3V10mvMhDw8MCglChXw4fZWCg== X-Google-Smtp-Source: ACHHUZ6eJGc3hpIAOt9YJvWBj9F5RZnvGuPiCmx8gAn+PX3yObErca6znGVJfr39Cto9ggPMkao/Tg== X-Received: by 2002:a17:907:9482:b0:94e:ed5d:c864 with SMTP id dm2-20020a170907948200b0094eed5dc864mr11456661ejc.19.1682926774575; Mon, 01 May 2023 00:39:34 -0700 (PDT) From: Andrew Melnychenko To: jasowang@redhat.com, mst@redhat.com, armbru@redhat.com, eblake@redhat.com, qemu-devel@nongnu.org, berrange@redhat.com Cc: yuri.benditovich@daynix.com, yan@daynix.com Subject: [PATCH 4/5] qmp: Added new command to retrieve eBPF blob. Date: Mon, 1 May 2023 10:21:00 +0300 Message-Id: <20230501072101.22890-5-andrew@daynix.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230501072101.22890-1-andrew@daynix.com> References: <20230501072101.22890-1-andrew@daynix.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: none client-ip=2a00:1450:4864:20::62a; envelope-from=andrew@daynix.com; helo=mail-ej1-x62a.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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 @daynix-com.20221208.gappssmtp.com) X-ZM-MESSAGEID: 1682926890666100003 Content-Type: text/plain; charset="utf-8" Added command "request-ebpf". This command returns eBPF program encoded base64. The program taken from the skeleton and essentially is an ELF object that can be loaded in the future with libbpf. Signed-off-by: Andrew Melnychenko --- monitor/qmp-cmds.c | 16 ++++++++++++++++ qapi/misc.json | 28 ++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c index b0f948d3376..f7641bb55b9 100644 --- a/monitor/qmp-cmds.c +++ b/monitor/qmp-cmds.c @@ -32,6 +32,7 @@ #include "hw/mem/memory-device.h" #include "hw/intc/intc.h" #include "hw/rdma/rdma.h" +#include "ebpf/ebpf.h" =20 NameInfo *qmp_query_name(Error **errp) { @@ -209,3 +210,18 @@ static void __attribute__((__constructor__)) monitor_i= nit_qmp_commands(void) qmp_marshal_qmp_capabilities, QCO_ALLOW_PRECONFIG, 0); } + +EbpfObject *qmp_request_ebpf(const char *id, Error **errp) +{ + EbpfObject *ret =3D NULL; + size_t size =3D 0; + const void *data =3D ebpf_find_binary_by_id(id, &size, errp); + if (!data) { + return NULL; + } + + ret =3D g_new0(EbpfObject, 1); + ret->object =3D g_base64_encode(data, size); + + return ret; +} diff --git a/qapi/misc.json b/qapi/misc.json index 6ddd16ea283..81613fd1b13 100644 --- a/qapi/misc.json +++ b/qapi/misc.json @@ -618,3 +618,31 @@ { 'event': 'VFU_CLIENT_HANGUP', 'data': { 'vfu-id': 'str', 'vfu-qom-path': 'str', 'dev-id': 'str', 'dev-qom-path': 'str' } } + +## +# @EbpfObject: +# +# Structure that holds eBPF ELF object encoded in base64. +# +# Since: 8.1 +# +## +{ 'struct': 'EbpfObject', + 'data': {'object': 'str'} } + +## +# @request-ebpf: +# +# Function returns eBPF object that can be loaded with libbpf. +# Management applications (g.e. libvirt) may load it and pass file +# descriptors to QEMU. Which allows running QEMU without BPF capabilities. +# +# Returns: RSS eBPF object encoded in base64. +# +# Since: 8.1 +# +## +{ 'command': 'request-ebpf', + 'data': { 'id': 'str' }, + 'returns': 'EbpfObject' } + --=20 2.39.1