mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-07-17 15:17:17 +00:00
Add functions to track virtio-serial addresses
Create a sorted array of virtio-serial controllers. Each of the elements contains the controller index and a bitmap of available ports. Buses are not tracked, because they aren't supported by QEMU.
This commit is contained in:
Ján Tomko
parent
8945d6a805
commit
16db8d2ec5
@ -718,3 +718,401 @@ virDomainCCWAddressSetCreate(void)
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virDomainCCWAddressSetFree(addrs);
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return NULL;
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}
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#define VIR_DOMAIN_DEFAULT_VIRTIO_SERIAL_PORTS 31
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/* virDomainVirtioSerialAddrSetCreate
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*
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* Allocates an address set for virtio serial addresses
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*/
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virDomainVirtioSerialAddrSetPtr
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virDomainVirtioSerialAddrSetCreate(void)
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{
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virDomainVirtioSerialAddrSetPtr ret = NULL;
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if (VIR_ALLOC(ret) < 0)
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return NULL;
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return ret;
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}
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static void
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virDomainVirtioSerialControllerFree(virDomainVirtioSerialControllerPtr cont)
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{
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if (cont) {
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virBitmapFree(cont->ports);
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VIR_FREE(cont);
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}
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}
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static ssize_t
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virDomainVirtioSerialAddrPlaceController(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainVirtioSerialControllerPtr cont)
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{
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size_t i;
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for (i = 0; i < addrs->ncontrollers; i++) {
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if (addrs->controllers[i]->idx == cont->idx) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("virtio serial controller with index %u already exists"
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" in the address set"),
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cont->idx);
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return -2;
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}
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if (addrs->controllers[i]->idx > cont->idx)
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return i;
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}
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return -1;
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}
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static ssize_t
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virDomainVirtioSerialAddrFindController(virDomainVirtioSerialAddrSetPtr addrs,
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unsigned int idx)
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{
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size_t i;
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for (i = 0; i < addrs->ncontrollers; i++) {
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if (addrs->controllers[i]->idx == idx)
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return i;
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}
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return -1;
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}
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/* virDomainVirtioSerialAddrSetAddController
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*
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* Adds virtio serial ports of the existing controller
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* to the address set.
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*/
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int
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virDomainVirtioSerialAddrSetAddController(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainControllerDefPtr cont)
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{
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int ret = -1;
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int ports;
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virDomainVirtioSerialControllerPtr cnt = NULL;
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ssize_t insertAt;
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if (cont->type != VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL)
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return 0;
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ports = cont->opts.vioserial.ports;
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if (ports == -1)
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ports = VIR_DOMAIN_DEFAULT_VIRTIO_SERIAL_PORTS;
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VIR_DEBUG("Adding virtio serial controller index %u with %d"
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" ports to the address set", cont->idx, ports);
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if (VIR_ALLOC(cnt) < 0)
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goto cleanup;
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if (!(cnt->ports = virBitmapNew(ports)))
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goto cleanup;
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cnt->idx = cont->idx;
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if ((insertAt = virDomainVirtioSerialAddrPlaceController(addrs, cnt)) < -1)
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goto cleanup;
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if (VIR_INSERT_ELEMENT(addrs->controllers, insertAt,
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addrs->ncontrollers, cnt) < 0)
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goto cleanup;
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ret = 0;
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cleanup:
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virDomainVirtioSerialControllerFree(cnt);
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return ret;
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}
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/* virDomainVirtioSerialAddrSetAddControllers
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*
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* Adds virtio serial ports of controllers present in the domain definition
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* to the address set.
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*/
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int
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virDomainVirtioSerialAddrSetAddControllers(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDefPtr def)
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{
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size_t i;
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for (i = 0; i < def->ncontrollers; i++) {
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if (virDomainVirtioSerialAddrSetAddController(addrs,
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def->controllers[i]) < 0)
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return -1;
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}
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return 0;
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}
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/* virDomainVirtioSerialAddrSetRemoveController
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*
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* Removes a virtio serial controller from the address set.
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*/
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void
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virDomainVirtioSerialAddrSetRemoveController(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainControllerDefPtr cont)
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{
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ssize_t pos;
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if (cont->type != VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL)
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return;
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VIR_DEBUG("Removing virtio serial controller index %u "
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"from the address set", cont->idx);
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pos = virDomainVirtioSerialAddrFindController(addrs, cont->idx);
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if (pos >= 0)
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VIR_DELETE_ELEMENT(addrs->controllers, pos, addrs->ncontrollers);
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}
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void
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virDomainVirtioSerialAddrSetFree(virDomainVirtioSerialAddrSetPtr addrs)
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{
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size_t i;
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if (addrs) {
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for (i = 0; i < addrs->ncontrollers; i++)
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virDomainVirtioSerialControllerFree(addrs->controllers[i]);
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VIR_FREE(addrs);
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}
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}
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static int
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virDomainVirtioSerialAddrNext(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceVirtioSerialAddress *addr,
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bool allowZero)
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{
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int ret = -1;
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ssize_t port, startPort = 0;
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ssize_t i;
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unsigned int controller;
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/* port number 0 is reserved for virtconsoles */
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if (allowZero)
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startPort = -1;
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if (addrs->ncontrollers == 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("no virtio-serial controllers are available"));
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goto cleanup;
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}
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for (i = 0; i < addrs->ncontrollers; i++) {
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virBitmapPtr map = addrs->controllers[i]->ports;
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if ((port = virBitmapNextClearBit(map, startPort)) >= 0) {
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controller = addrs->controllers[i]->idx;
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goto success;
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}
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}
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virReportError(VIR_ERR_XML_ERROR, "%s",
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_("Unable to find a free virtio-serial port"));
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cleanup:
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return ret;
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success:
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addr->bus = 0;
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addr->port = port;
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addr->controller = controller;
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VIR_DEBUG("Found free virtio serial controller %u port %u", addr->controller,
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addr->port);
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ret = 0;
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goto cleanup;
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}
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static int
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virDomainVirtioSerialAddrNextFromController(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceVirtioSerialAddress *addr)
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{
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ssize_t port;
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ssize_t i;
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virBitmapPtr map;
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i = virDomainVirtioSerialAddrFindController(addrs, addr->controller);
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if (i < 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("virtio-serial controller %u not available"),
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addr->controller);
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return -1;
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}
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map = addrs->controllers[i]->ports;
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if ((port = virBitmapNextClearBit(map, 0)) <= 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("Unable to find a free port on virtio-serial controller %u"),
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addr->controller);
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return -1;
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}
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addr->bus = 0;
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addr->port = port;
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VIR_DEBUG("Found free virtio serial controller %u port %u", addr->controller,
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addr->port);
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return 0;
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}
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/* virDomainVirtioSerialAddrAutoAssign
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*
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* reserve a virtio serial address of the device (if it has one)
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* or assign a virtio serial address to the device
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*/
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int
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virDomainVirtioSerialAddrAutoAssign(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceInfoPtr info,
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bool allowZero)
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{
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bool portOnly = info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL;
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if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL &&
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info->addr.vioserial.port)
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return virDomainVirtioSerialAddrReserve(NULL, NULL, info, addrs);
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else
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return virDomainVirtioSerialAddrAssign(addrs, info, allowZero, portOnly);
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}
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int
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virDomainVirtioSerialAddrAssign(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceInfoPtr info,
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bool allowZero,
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bool portOnly)
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{
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int ret = -1;
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virDomainDeviceInfo nfo = { NULL };
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virDomainDeviceInfoPtr ptr = allowZero ? &nfo : info;
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ptr->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL;
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if (portOnly) {
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if (virDomainVirtioSerialAddrNextFromController(addrs,
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&ptr->addr.vioserial) < 0)
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goto cleanup;
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} else {
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if (virDomainVirtioSerialAddrNext(addrs, &ptr->addr.vioserial,
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allowZero) < 0)
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goto cleanup;
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}
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if (virDomainVirtioSerialAddrReserve(NULL, NULL, ptr, addrs) < 0)
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goto cleanup;
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ret = 0;
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cleanup:
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return ret;
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}
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/* virDomainVirtioSerialAddrIsComplete
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*
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* Check if the address is complete, or it needs auto-assignment
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*/
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bool
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virDomainVirtioSerialAddrIsComplete(virDomainDeviceInfoPtr info)
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{
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return info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL &&
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info->addr.vioserial.port != 0;
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}
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/* virDomainVirtioSerialAddrReserve
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*
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* Reserve the virtio serial address of the device
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*
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* For use with virDomainDeviceInfoIterate,
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* opaque should be the address set
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*/
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int
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virDomainVirtioSerialAddrReserve(virDomainDefPtr def ATTRIBUTE_UNUSED,
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virDomainDeviceDefPtr dev ATTRIBUTE_UNUSED,
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virDomainDeviceInfoPtr info,
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void *data)
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{
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virDomainVirtioSerialAddrSetPtr addrs = data;
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char *str = NULL;
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int ret = -1;
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virBitmapPtr map = NULL;
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bool b;
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ssize_t i;
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if (!virDomainVirtioSerialAddrIsComplete(info))
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return 0;
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VIR_DEBUG("Reserving virtio serial %u %u", info->addr.vioserial.controller,
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info->addr.vioserial.port);
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i = virDomainVirtioSerialAddrFindController(addrs, info->addr.vioserial.controller);
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if (i < 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("virtio serial controller %u is missing"),
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info->addr.vioserial.controller);
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goto cleanup;
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}
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map = addrs->controllers[i]->ports;
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if (virBitmapGetBit(map, info->addr.vioserial.port, &b) < 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("virtio serial controller %u does not have port %u"),
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info->addr.vioserial.controller,
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info->addr.vioserial.port);
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goto cleanup;
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}
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if (b) {
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virReportError(VIR_ERR_XML_ERROR,
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_("virtio serial port %u on controller %u is already occupied"),
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info->addr.vioserial.port,
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info->addr.vioserial.controller);
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goto cleanup;
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}
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ignore_value(virBitmapSetBit(map, info->addr.vioserial.port));
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ret = 0;
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cleanup:
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VIR_FREE(str);
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return ret;
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}
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/* virDomainVirtioSerialAddrRelease
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*
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* Release the virtio serial address of the device
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*/
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int
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virDomainVirtioSerialAddrRelease(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceInfoPtr info)
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{
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virBitmapPtr map;
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char *str = NULL;
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int ret = -1;
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ssize_t i;
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if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL ||
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info->addr.vioserial.port == 0)
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return 0;
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VIR_DEBUG("Releasing virtio serial %u %u", info->addr.vioserial.controller,
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info->addr.vioserial.port);
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i = virDomainVirtioSerialAddrFindController(addrs, info->addr.vioserial.controller);
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if (i < 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("virtio serial controller %u is missing"),
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info->addr.vioserial.controller);
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goto cleanup;
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}
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map = addrs->controllers[i]->ports;
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if (virBitmapClearBit(map, info->addr.vioserial.port) < 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("virtio serial controller %u does not have port %u"),
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info->addr.vioserial.controller,
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info->addr.vioserial.port);
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goto cleanup;
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}
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ret = 0;
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cleanup:
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VIR_FREE(str);
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return ret;
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}
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@ -173,4 +173,63 @@ int virDomainCCWAddressReleaseAddr(virDomainCCWAddressSetPtr addrs,
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virDomainDeviceInfoPtr dev)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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virDomainCCWAddressSetPtr virDomainCCWAddressSetCreate(void);
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struct _virDomainVirtioSerialController {
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unsigned int idx;
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virBitmapPtr ports;
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};
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typedef struct _virDomainVirtioSerialController virDomainVirtioSerialController;
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typedef virDomainVirtioSerialController *virDomainVirtioSerialControllerPtr;
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struct _virDomainVirtioSerialAddrSet {
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virDomainVirtioSerialControllerPtr *controllers;
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size_t ncontrollers;
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};
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typedef struct _virDomainVirtioSerialAddrSet virDomainVirtioSerialAddrSet;
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typedef virDomainVirtioSerialAddrSet *virDomainVirtioSerialAddrSetPtr;
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virDomainVirtioSerialAddrSetPtr
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virDomainVirtioSerialAddrSetCreate(void);
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int
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virDomainVirtioSerialAddrSetAddController(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainControllerDefPtr cont)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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void
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virDomainVirtioSerialAddrSetRemoveController(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainControllerDefPtr cont)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int
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virDomainVirtioSerialAddrSetAddControllers(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDefPtr def)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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void
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virDomainVirtioSerialAddrSetFree(virDomainVirtioSerialAddrSetPtr addrs);
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bool
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virDomainVirtioSerialAddrIsComplete(virDomainDeviceInfoPtr info);
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int
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virDomainVirtioSerialAddrAutoAssign(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceInfoPtr info,
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bool allowZero)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int
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virDomainVirtioSerialAddrAssign(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceInfoPtr info,
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bool allowZero,
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bool portOnly)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int
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virDomainVirtioSerialAddrReserve(virDomainDefPtr def,
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virDomainDeviceDefPtr dev,
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virDomainDeviceInfoPtr info,
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void *data)
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ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4);
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int
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virDomainVirtioSerialAddrRelease(virDomainVirtioSerialAddrSetPtr addrs,
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virDomainDeviceInfoPtr info)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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#endif /* __DOMAIN_ADDR_H__ */
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@ -108,6 +108,16 @@ virDomainPCIAddressSetFree;
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virDomainPCIAddressSetGrow;
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virDomainPCIAddressSlotInUse;
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virDomainPCIAddressValidate;
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virDomainVirtioSerialAddrAssign;
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virDomainVirtioSerialAddrAutoAssign;
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virDomainVirtioSerialAddrIsComplete;
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virDomainVirtioSerialAddrRelease;
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virDomainVirtioSerialAddrReserve;
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virDomainVirtioSerialAddrSetAddController;
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virDomainVirtioSerialAddrSetAddControllers;
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virDomainVirtioSerialAddrSetCreate;
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virDomainVirtioSerialAddrSetFree;
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virDomainVirtioSerialAddrSetRemoveController;
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# conf/domain_audit.h
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