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util: match phys_port_id when converting PF-netdev to/from VF-netdev

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This patch updates functions in netdev.c to pay attention to
phys_port_id. It uses the new function virNetDevGetPhysPortID() to
learn the phys_port_id of a VF or PF, then sends that info to
virPCIGetNetName(), which has newly been modified to take an optional
phys_port_id.
This commit is contained in:
Laine Stump 2017-07-31 01:55:49 -04:00
parent b3b5aa75ed
commit 39d136b67b
1 changed files with 25 additions and 5 deletions
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30
src/util/virnetdev.c
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@ -1231,13 +1231,17 @@ virNetDevGetVirtualFunctions(const char *pfname,
char *pf_sysfs_device_link = NULL;
char *pci_sysfs_device_link = NULL;
char *pciConfigAddr = NULL;
char *pfPhysPortID = NULL;
*virt_fns = NULL;
*n_vfname = 0;
*max_vfs = 0;
if (virNetDevGetPhysPortID(pfname, &pfPhysPortID) < 0)
goto cleanup;
if (virNetDevSysfsFile(&pf_sysfs_device_link, pfname, "device") < 0)
return ret;
goto cleanup;
if (virPCIGetVirtualFunctions(pf_sysfs_device_link, virt_fns,
n_vfname, max_vfs) < 0)
@ -1263,7 +1267,7 @@ virNetDevGetVirtualFunctions(const char *pfname,
}
if (virPCIGetNetName(pci_sysfs_device_link, 0,
NULL, &((*vfname)[i])) < 0) {
pfPhysPortID, &((*vfname)[i])) < 0) {
goto cleanup;
}
@ -1278,6 +1282,7 @@ virNetDevGetVirtualFunctions(const char *pfname,
VIR_FREE(*vfname);
VIR_FREE(*virt_fns);
}
VIR_FREE(pfPhysPortID);
VIR_FREE(pf_sysfs_device_link);
VIR_FREE(pci_sysfs_device_link);
VIR_FREE(pciConfigAddr);
@ -1359,14 +1364,19 @@ int
virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
{
char *physfn_sysfs_path = NULL;
char *vfPhysPortID = NULL;
int ret = -1;
if (virNetDevGetPhysPortID(ifname, &vfPhysPortID) < 0)
goto cleanup;
if (virNetDevSysfsDeviceFile(&physfn_sysfs_path, ifname, "physfn") < 0)
return ret;
goto cleanup;
if (virPCIGetNetName(physfn_sysfs_path, 0,
NULL, pfname) < 0)
vfPhysPortID, pfname) < 0) {
goto cleanup;
}
if (!*pfname) {
/* this shouldn't be possible. A VF can't exist unless its
@ -1380,6 +1390,7 @@ virNetDevGetPhysicalFunction(const char *ifname, char **pfname)
ret = 0;
cleanup:
VIR_FREE(vfPhysPortID);
VIR_FREE(physfn_sysfs_path);
return ret;
}
@ -1407,8 +1418,16 @@ virNetDevPFGetVF(const char *pfname, int vf, char **vfname)
{
char *virtfnName = NULL;
char *virtfnSysfsPath = NULL;
char *pfPhysPortID = NULL;
int ret = -1;
/* a VF may have multiple "ports", each one having its own netdev,
* and each netdev having a different phys_port_id. Be sure we get
* the VF netdev with a phys_port_id matchine that of pfname
*/
if (virNetDevGetPhysPortID(pfname, &pfPhysPortID) < 0)
goto cleanup;
if (virAsprintf(&virtfnName, "virtfn%d", vf) < 0)
goto cleanup;
@ -1425,11 +1444,12 @@ virNetDevPFGetVF(const char *pfname, int vf, char **vfname)
* isn't bound to a netdev driver, it won't have a netdev name,
* and vfname will be NULL).
*/
ret = virPCIGetNetName(virtfnSysfsPath, 0, NULL, vfname);
ret = virPCIGetNetName(virtfnSysfsPath, 0, pfPhysPortID, vfname);
cleanup:
VIR_FREE(virtfnName);
VIR_FREE(virtfnSysfsPath);
VIR_FREE(pfPhysPortID);
return ret;
}