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d="scan'208";a="3787851" From: Anthony PERARD To: Date: Fri, 2 Aug 2019 16:35:52 +0100 Message-ID: <20190802153606.32061-22-anthony.perard@citrix.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802153606.32061-1-anthony.perard@citrix.com> References: <20190802153606.32061-1-anthony.perard@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH 21/35] libxl_usb: Make libxl__device_usbdev_add uses ev_qmp X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Anthony PERARD , Ian Jackson , Wei Liu Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Signed-off-by: Anthony PERARD Acked-by: Ian Jackson --- tools/libxl/libxl_usb.c | 99 +++++++++++++++++++++++++++++++++-------- 1 file changed, 81 insertions(+), 18 deletions(-) diff --git a/tools/libxl/libxl_usb.c b/tools/libxl/libxl_usb.c index 92eeeb27f0..6b3e388a18 100644 --- a/tools/libxl/libxl_usb.c +++ b/tools/libxl/libxl_usb.c @@ -397,26 +397,25 @@ static int libxl__device_usbctrl_del_hvm(libxl__gc *g= c, } =20 /* Send qmp commands to create a usb device in qemu. */ -static int libxl__device_usbdev_add_hvm(libxl__gc *gc, uint32_t domid, +static int libxl__device_usbdev_add_hvm(libxl__gc *gc, libxl__ev_qmp *qmp, libxl_device_usbdev *usbdev) { - flexarray_t *qmp_args; + libxl__json_object *qmp_args =3D NULL; =20 - qmp_args =3D flexarray_make(gc, 12, 1); - flexarray_append_pair(qmp_args, "id", - GCSPRINTF("xenusb-%d-%d", - usbdev->u.hostdev.hostbus, - usbdev->u.hostdev.hostaddr)); - flexarray_append_pair(qmp_args, "driver", "usb-host"); - flexarray_append_pair(qmp_args, "bus", - GCSPRINTF("xenusb-%d.0", usbdev->ctrl)); - flexarray_append_pair(qmp_args, "port", GCSPRINTF("%d", usbdev->port)); - flexarray_append_pair(qmp_args, "hostbus", - GCSPRINTF("%d", usbdev->u.hostdev.hostbus)); - flexarray_append_pair(qmp_args, "hostaddr", - GCSPRINTF("%d", usbdev->u.hostdev.hostaddr)); - - return libxl__qmp_run_command_flexarray(gc, domid, "device_add", qmp_a= rgs); + libxl__qmp_param_add_string(gc, &qmp_args, "id", + GCSPRINTF("xenusb-%d-%d", usbdev->u.hostdev.hostbus, + usbdev->u.hostdev.hostaddr)); + libxl__qmp_param_add_string(gc, &qmp_args, "driver", "usb-host"); + libxl__qmp_param_add_string(gc, &qmp_args, "bus", + GCSPRINTF("xenusb-%d.0", usbdev->ctrl)); + libxl__qmp_param_add_string(gc, &qmp_args, "port", + GCSPRINTF("%d", usbdev->port)); + libxl__qmp_param_add_string(gc, &qmp_args, "hostbus", + GCSPRINTF("%d", usbdev->u.hostdev.hostbus)); + libxl__qmp_param_add_string(gc, &qmp_args, "hostaddr", + GCSPRINTF("%d", usbdev->u.hostdev.hostaddr)); + + return libxl__ev_qmp_send(gc, qmp, "device_add", qmp_args); } =20 /* Send qmp commands to delete a usb device in qemu. */ @@ -1641,6 +1640,13 @@ static int usbback_dev_assign(libxl__gc *gc, const c= har *busid) return rc; } =20 +static void device_usbdev_add_qmp_cb(libxl__egc *egc, + libxl__ev_qmp *qmp, const libxl__json_object *r, int rc); +static void device_usbdev_add_timeout(libxl__egc *egc, + libxl__ev_time *ev, const struct timeval *requested_abs, int rc); +static void device_usbdev_add_done(libxl__egc *egc, + libxl__ao_device *aodev, int rc); + /* AO operation to add a usb device. * * Generally, it does: @@ -1667,9 +1673,14 @@ static void libxl__device_usbdev_add(libxl__egc *egc= , uint32_t domid, int num_assigned; libxl_device_usbctrl usbctrl; char *busid; + bool has_callback =3D false; =20 libxl_device_usbctrl_init(&usbctrl); =20 + /* Store *usbdev to be used by callbacks */ + aodev->device_config =3D usbdev; + aodev->device_type =3D &libxl__usbdev_devtype; + /* Currently only support adding USB device from Dom0 backend. * So, if USB controller is specified, check its backend domain, * if it's not Dom0, report error. @@ -1753,12 +1764,22 @@ static void libxl__device_usbdev_add(libxl__egc *eg= c, uint32_t domid, aodev->update_json); if (rc) goto out; =20 - rc =3D libxl__device_usbdev_add_hvm(gc, domid, usbdev); + rc =3D libxl__ev_time_register_rel(ao, &aodev->timeout, + device_usbdev_add_timeout, + LIBXL_QMP_CMD_TIMEOUT * 1000); + if (rc) goto out; + + aodev->qmp.ao =3D ao; + aodev->qmp.domid =3D domid; + aodev->qmp.callback =3D device_usbdev_add_qmp_cb; + aodev->qmp.payload_fd =3D -1; + rc =3D libxl__device_usbdev_add_hvm(gc, &aodev->qmp, usbdev); if (rc) { libxl__device_usbdev_remove_xenstore(gc, domid, usbdev, LIBXL_USBCTRL_TYPE_DEVICEMODE= L); goto out; } + has_callback =3D true; break; default: LOGD(ERROR, domid, "Unsupported usb controller type"); @@ -1770,6 +1791,48 @@ static void libxl__device_usbdev_add(libxl__egc *egc= , uint32_t domid, =20 out: libxl_device_usbctrl_dispose(&usbctrl); + /* Only call _done if no callback have been setup */ + if (!has_callback) + device_usbdev_add_done(egc, aodev, rc); /* must be last */ +} + +static void device_usbdev_add_timeout(libxl__egc *egc, + libxl__ev_time *ev, + const struct timeval *requested_abs, + int rc) +{ + EGC_GC; + libxl__ao_device *aodev =3D CONTAINER_OF(ev, *aodev, timeout); + + if (rc =3D=3D ERROR_TIMEDOUT) + LOGD(ERROR, aodev->qmp.domid, + "Adding usbdev to QEMU timed out"); + device_usbdev_add_qmp_cb(egc, &aodev->qmp, NULL, rc); +} + +static void device_usbdev_add_qmp_cb(libxl__egc *egc, + libxl__ev_qmp *qmp, + const libxl__json_object *r, + int rc) +{ + EGC_GC; + libxl__ao_device *aodev =3D CONTAINER_OF(qmp, *aodev, qmp); + libxl_device_usbdev *const usbdev =3D aodev->device_config; + + if (rc) + libxl__device_usbdev_remove_xenstore(gc, qmp->domid, + usbdev, LIBXL_USBCTRL_TYPE_DEVICEMODEL); + device_usbdev_add_done(egc, aodev, rc); /* must be last */ +} + +static void device_usbdev_add_done(libxl__egc *egc, + libxl__ao_device *aodev, + int rc) +{ + EGC_GC; + + libxl__ev_time_deregister(gc, &aodev->timeout); + libxl__ev_qmp_dispose(gc, &aodev->qmp); aodev->rc =3D rc; aodev->callback(egc, aodev); } --=20 Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel