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Xen: Improve parsing of PCI addresses in config converter
There was a report on libvirt-users [1] about the domxml to/from native converter in the Xen driver not handling PCI addresses without a domain specification. This patch improves parsing of PCI addresses in the converter and allows PCI addresses with only bb:ss.f. xl.cfg(5) also allows either the dddd:bb:ss.f or bb:ss.f format. A test has been added to check the conversion from xl.cfg to domXML. [1] https://www.redhat.com/archives/libvirt-users/2020-August/msg00040.html Signed-off-by: Jim Fehlig <jfehlig@suse.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Jim Fehlig
parent
3a6836fc6d
commit
d4eecbf662
@ -372,63 +372,44 @@ static virDomainHostdevDefPtr
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xenParsePCI(char *entry)
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{
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virDomainHostdevDefPtr hostdev = NULL;
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char domain[5];
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char bus[3];
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char slot[3];
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char func[2];
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char *key, *nextkey;
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int domainID;
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int busID;
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int slotID;
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int funcID;
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VIR_AUTOSTRINGLIST tokens = NULL;
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size_t ntokens = 0;
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size_t nexttoken = 0;
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char *slotstr;
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char *funcstr;
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int domain = 0x0;
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int bus;
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int slot;
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int func;
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domain[0] = bus[0] = slot[0] = func[0] = '\0';
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/* pci=['00:1b.0','0000:00:13.0'] */
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if (!(tokens = virStringSplitCount(entry, ":", 3, &ntokens)))
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return NULL;
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/* pci=['0000:00:1b.0','0000:00:13.0'] */
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if (!(key = entry))
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return NULL;
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if (!(nextkey = strchr(key, ':')))
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return NULL;
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if (virStrncpy(domain, key, (nextkey - key), sizeof(domain)) < 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Domain %s too big for destination"), key);
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return NULL;
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/* domain */
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if (ntokens == 3) {
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if (virStrToLong_i(tokens[nexttoken], NULL, 16, &domain) < 0)
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return NULL;
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nexttoken++;
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}
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key = nextkey + 1;
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if (!(nextkey = strchr(key, ':')))
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/* bus */
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if (virStrToLong_i(tokens[nexttoken], NULL, 16, &bus) < 0)
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return NULL;
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if (virStrncpy(bus, key, (nextkey - key), sizeof(bus)) < 0) {
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nexttoken++;
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/* slot and function */
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slotstr = tokens[nexttoken];
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if (!(funcstr = strchr(slotstr, '.'))) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Bus %s too big for destination"), key);
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_("Malformed PCI address %s"), slotstr);
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return NULL;
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}
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key = nextkey + 1;
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if (!(nextkey = strchr(key, '.')))
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*funcstr = '\0';
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funcstr++;
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if (virStrToLong_i(slotstr, NULL, 16, &slot) < 0)
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return NULL;
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if (virStrncpy(slot, key, (nextkey - key), sizeof(slot)) < 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Slot %s too big for destination"), key);
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return NULL;
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}
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key = nextkey + 1;
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if (strlen(key) != 1)
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return NULL;
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if (virStrncpy(func, key, 1, sizeof(func)) < 0) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Function %s too big for destination"), key);
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return NULL;
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}
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if (virStrToLong_i(domain, NULL, 16, &domainID) < 0)
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return NULL;
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if (virStrToLong_i(bus, NULL, 16, &busID) < 0)
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return NULL;
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if (virStrToLong_i(slot, NULL, 16, &slotID) < 0)
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return NULL;
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if (virStrToLong_i(func, NULL, 16, &funcID) < 0)
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if (virStrToLong_i(funcstr, NULL, 16, &func) < 0)
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return NULL;
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if (!(hostdev = virDomainHostdevDefNew()))
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@ -436,10 +417,10 @@ xenParsePCI(char *entry)
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hostdev->managed = false;
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hostdev->source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI;
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hostdev->source.subsys.u.pci.addr.domain = domainID;
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hostdev->source.subsys.u.pci.addr.bus = busID;
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hostdev->source.subsys.u.pci.addr.slot = slotID;
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hostdev->source.subsys.u.pci.addr.function = funcID;
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hostdev->source.subsys.u.pci.addr.domain = domain;
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hostdev->source.subsys.u.pci.addr.bus = bus;
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hostdev->source.subsys.u.pci.addr.slot = slot;
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hostdev->source.subsys.u.pci.addr.function = func;
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return hostdev;
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}
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26
tests/xmconfigdata/test-pci-dev-syntax.cfg
Normal file
26
tests/xmconfigdata/test-pci-dev-syntax.cfg
Normal file
@ -0,0 +1,26 @@
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name = "test"
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uuid = "cc2315e7-d26a-307a-438c-6d188ec4c09c"
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maxmem = 382
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memory = 350
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vcpus = 1
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pae = 1
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acpi = 1
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apic = 1
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viridian = 0
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rtc_timeoffset = 0
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localtime = 0
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on_poweroff = "destroy"
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on_reboot = "destroy"
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on_crash = "destroy"
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device_model = "/usr/lib/xen/bin/qemu-system-i386"
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sdl = 0
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vnc = 1
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vncunused = 1
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vif = [ "mac=00:16:3e:0a:7b:39,bridge=xenbr0,script=vif-bridge,model=e1000" ]
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pci = [ "0001:0c:1b.2", "01:13.0" ]
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parallel = "none"
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serial = "pty"
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builder = "hvm"
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kernel = "/usr/lib/xen/boot/hvmloader"
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boot = "c"
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disk = [ "phy:/dev/sda8,hda,w", ",hdc:cdrom,r" ]
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71
tests/xmconfigdata/test-pci-dev-syntax.xml
Normal file
71
tests/xmconfigdata/test-pci-dev-syntax.xml
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@ -0,0 +1,71 @@
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<domain type='xen'>
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<name>test</name>
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<uuid>cc2315e7-d26a-307a-438c-6d188ec4c09c</uuid>
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<memory unit='KiB'>391168</memory>
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<currentMemory unit='KiB'>358400</currentMemory>
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<vcpu placement='static'>1</vcpu>
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<os>
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<type arch='x86_64' machine='xenfv'>hvm</type>
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<loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
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<boot dev='hd'/>
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</os>
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<features>
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<acpi/>
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<apic/>
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<pae/>
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</features>
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<clock offset='variable' adjustment='0' basis='utc'/>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>destroy</on_reboot>
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<on_crash>destroy</on_crash>
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<devices>
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<emulator>/usr/lib/xen/bin/qemu-system-i386</emulator>
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<disk type='block' device='disk'>
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<driver name='phy' type='raw'/>
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<source dev='/dev/sda8'/>
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<target dev='hda' bus='ide'/>
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<address type='drive' controller='0' bus='0' target='0' unit='0'/>
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</disk>
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<disk type='block' device='cdrom'>
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<driver name='phy' type='raw'/>
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<target dev='hdc' bus='ide'/>
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<readonly/>
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<address type='drive' controller='0' bus='1' target='0' unit='0'/>
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</disk>
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<controller type='xenbus' index='0'/>
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<controller type='ide' index='0'/>
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<interface type='bridge'>
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<mac address='00:16:3e:0a:7b:39'/>
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<source bridge='xenbr0'/>
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<script path='vif-bridge'/>
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<model type='e1000'/>
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</interface>
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<serial type='pty'>
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<target port='0'/>
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</serial>
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<console type='pty'>
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<target type='serial' port='0'/>
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</console>
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<input type='mouse' bus='ps2'/>
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<input type='keyboard' bus='ps2'/>
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<graphics type='vnc' port='-1' autoport='yes'>
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<listen type='address'/>
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</graphics>
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<video>
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<model type='cirrus' vram='8192' heads='1' primary='yes'/>
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</video>
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<hostdev mode='subsystem' type='pci' managed='no'>
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<driver name='xen'/>
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<source>
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<address domain='0x0001' bus='0x0c' slot='0x1b' function='0x2'/>
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</source>
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</hostdev>
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<hostdev mode='subsystem' type='pci' managed='no'>
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<driver name='xen'/>
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<source>
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<address domain='0x0000' bus='0x01' slot='0x13' function='0x0'/>
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</source>
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</hostdev>
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<memballoon model='xen'/>
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</devices>
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</domain>
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@ -216,6 +216,7 @@ mymain(void)
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DO_TEST("escape-paths");
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DO_TEST("no-source-cdrom");
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DO_TEST("pci-devs");
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DO_TEST_FORMAT("pci-dev-syntax");
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DO_TEST("disk-drv-blktap-raw");
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DO_TEST("disk-drv-blktap2-raw");
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