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[84.229.155.40]) by smtp.gmail.com with ESMTPSA id a10sm15884778wrm.87.2020.04.04.01.29.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 Apr 2020 01:29:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=vwN78YIbadn0F1t/gIo345UXpGQM9fySiz9wjWBVkEs=; b=EWnkzd79cDwsaTDLV3tagWoNJhAH4YEtCIb3+w0sCIpftTsHNH06430/+CfYiphOTg vWN0MOuKyRB4SEq4HiWXVli3D5vP+QCKRs3xQsTJnNqQzCnG5Khxkq8RttLmgv35kZII Z2X1qUguqfWaobc5BLvX8C9XDCn7AJRYpLHWRwTQC1GGG1qvlswgUjbp19ZoK3lOljrd 4U+2TZAC6xCQswsGtGKP6i9gqsT6FPXWcPBQQwWp73iZFAlBOc8zMYH0t2KWtcOfSB+L UzxJeQGo+Sqqgc9IFk41iTK8THZnYa1UfJZR3rIi4uGQ7qEZC08Rwab9pXXPGo7zyRIZ yKJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=vwN78YIbadn0F1t/gIo345UXpGQM9fySiz9wjWBVkEs=; b=MjI2wFofbdTaPA7ML1ILldBb8vgd0FIO3aXLPO8uuDtFBUDiLmCWO7KD9ZvtyCTswB ak4iBhuRdV1OcsJTqMKA9xIgNmKJB3fka4Tiiedk0oCF2VaxPPknIf0o+fXGVlaq6nfW p1sCxn5t4GzYOFeRbKdjGBFmgPWsw/oZoqmS9T1NpiakvZF4qk/UHXhyelQ+KTTDpne3 x+nUXi1/z3e3JAun/qH99HbcAcegIIepU3reWFSOmCKEkOecUjLta/nqOn1PV+i0rLAx 5U/8+e9RPbLU3oIyCcK9gKtYIs1TAtaAB/J03NAlYKRvrwoYiHHfNjnquIk2o5hMVGaE T78w== X-Gm-Message-State: AGi0PuZIX4dBSAceE8Ys25W4CL8/Zq3BseifimGS2Eg7mkwlwFzK9z6h WKLpdIcl7vQfV4DskCcM4xia+nb2b4PnRQ== X-Google-Smtp-Source: APiQypLdsvs2BnIlcrsVATp5eitQcRUZf+rtlJA5x+tO993SIftYivuejg+fdXvTydftrVDd6tzArQ== X-Received: by 2002:a05:6000:1090:: with SMTP id y16mr12473129wrw.281.1585988967736; Sat, 04 Apr 2020 01:29:27 -0700 (PDT) From: Jon Doron To: qemu-devel@nongnu.org Subject: [PATCH v2 7/7] vmbus: add infrastructure to save/load vmbus requests Date: Sat, 4 Apr 2020 11:29:00 +0300 Message-Id: <20200404082900.33711-8-arilou@gmail.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200404082900.33711-1-arilou@gmail.com> References: <20200404082900.33711-1-arilou@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::443 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mail@maciej.szmigiero.name, eyakovlev@virtuozzo.com, ehabkost@redhat.com, rvkagan@gmail.com, liran.alon@oracle.com, Roman Kagan , pbonzini@redhat.com, vkuznets@redhat.com, "Maciej S . Szmigiero" , Jon Doron Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" This can be allow to include controller-specific data while saving/loading in-flight scsi requests of the vmbus scsi controller. Signed-off-by: Roman Kagan Signed-off-by: Maciej S. Szmigiero Signed-off-by: Jon Doron --- hw/hyperv/vmbus.c | 99 +++++++++++++++++++++++++++++++++++++++ include/hw/hyperv/vmbus.h | 3 ++ 2 files changed, 102 insertions(+) diff --git a/hw/hyperv/vmbus.c b/hw/hyperv/vmbus.c index 46c6f5eebb..e16228a77c 100644 --- a/hw/hyperv/vmbus.c +++ b/hw/hyperv/vmbus.c @@ -1272,6 +1272,105 @@ void vmbus_free_req(void *req) g_free(req); } =20 +static const VMStateDescription vmstate_sgent =3D { + .name =3D "vmbus/sgentry", + .version_id =3D 0, + .minimum_version_id =3D 0, + .fields =3D (VMStateField[]) { + VMSTATE_UINT64(base, ScatterGatherEntry), + VMSTATE_UINT64(len, ScatterGatherEntry), + VMSTATE_END_OF_LIST() + } +}; + +typedef struct VMBusChanReqSave { + uint16_t chan_idx; + uint16_t pkt_type; + uint32_t msglen; + void *msg; + uint64_t transaction_id; + bool need_comp; + uint32_t num; + ScatterGatherEntry *sgl; +} VMBusChanReqSave; + +static const VMStateDescription vmstate_vmbus_chan_req =3D { + .name =3D "vmbus/vmbus_chan_req", + .version_id =3D 0, + .minimum_version_id =3D 0, + .fields =3D (VMStateField[]) { + VMSTATE_UINT16(chan_idx, VMBusChanReqSave), + VMSTATE_UINT16(pkt_type, VMBusChanReqSave), + VMSTATE_UINT32(msglen, VMBusChanReqSave), + VMSTATE_VBUFFER_ALLOC_UINT32(msg, VMBusChanReqSave, 0, NULL, msgle= n), + VMSTATE_UINT64(transaction_id, VMBusChanReqSave), + VMSTATE_BOOL(need_comp, VMBusChanReqSave), + VMSTATE_UINT32(num, VMBusChanReqSave), + VMSTATE_STRUCT_VARRAY_POINTER_UINT32(sgl, VMBusChanReqSave, num, + vmstate_sgent, ScatterGatherE= ntry), + VMSTATE_END_OF_LIST() + } +}; + +void vmbus_save_req(QEMUFile *f, VMBusChanReq *req) +{ + VMBusChanReqSave req_save; + + req_save.chan_idx =3D req->chan->subchan_idx; + req_save.pkt_type =3D req->pkt_type; + req_save.msglen =3D req->msglen; + req_save.msg =3D req->msg; + req_save.transaction_id =3D req->transaction_id; + req_save.need_comp =3D req->need_comp; + req_save.num =3D req->sgl.nsg; + req_save.sgl =3D g_memdup(req->sgl.sg, + req_save.num * sizeof(ScatterGatherEntry)); + + vmstate_save_state(f, &vmstate_vmbus_chan_req, &req_save, NULL); + + g_free(req_save.sgl); +} + +void *vmbus_load_req(QEMUFile *f, VMBusDevice *dev, uint32_t size) +{ + VMBusChanReqSave req_save; + VMBusChanReq *req =3D NULL; + VMBusChannel *chan =3D NULL; + uint32_t i; + + vmstate_load_state(f, &vmstate_vmbus_chan_req, &req_save, 0); + + if (req_save.chan_idx >=3D dev->num_channels) { + error_report("%s: %u(chan_idx) > %u(num_channels)", __func__, + req_save.chan_idx, dev->num_channels); + goto out; + } + chan =3D &dev->channels[req_save.chan_idx]; + + if (vmbus_channel_reserve(chan, 0, req_save.msglen)) { + goto out; + } + + req =3D vmbus_alloc_req(chan, size, req_save.pkt_type, req_save.msglen, + req_save.transaction_id, req_save.need_comp); + if (req_save.msglen) { + memcpy(req->msg, req_save.msg, req_save.msglen); + } + + for (i =3D 0; i < req_save.num; i++) { + qemu_sglist_add(&req->sgl, req_save.sgl[i].base, req_save.sgl[i].l= en); + } + +out: + if (req_save.msglen) { + g_free(req_save.msg); + } + if (req_save.num) { + g_free(req_save.sgl); + } + return req; +} + static void channel_event_cb(EventNotifier *e) { VMBusChannel *chan =3D container_of(e, VMBusChannel, notifier); diff --git a/include/hw/hyperv/vmbus.h b/include/hw/hyperv/vmbus.h index 63a5b807b6..9219f34d6b 100644 --- a/include/hw/hyperv/vmbus.h +++ b/include/hw/hyperv/vmbus.h @@ -224,4 +224,7 @@ int vmbus_map_sgl(VMBusChanReq *req, DMADirection dir, = struct iovec *iov, void vmbus_unmap_sgl(VMBusChanReq *req, DMADirection dir, struct iovec *io= v, unsigned iov_cnt, size_t accessed); =20 +void vmbus_save_req(QEMUFile *f, VMBusChanReq *req); +void *vmbus_load_req(QEMUFile *f, VMBusDevice *dev, uint32_t size); + #endif --=20 2.24.1