[libvirt] [PATCH 25/33] Rename ifaceGetIndex and ifaceGetVLAN
Daniel P. Berrange
berrange at redhat.com
Thu Nov 3 17:30:21 UTC 2011
From: "Daniel P. Berrange" <berrange at redhat.com>
Rename the ifaceGetIndex method to virNetDevGetIndex and
ifaceGetVlanID to virNetDevGetVLanID. Also change the error
reporting behaviour to always raise errors and return -1 on
failure
* util/interface.c, util/interface.h: Rename ifaceGetIndex
and ifaceGetVLAN
* nwfilter/nwfilter_gentech_driver.c, nwfilter/nwfilter_learnipaddr.c,
nwfilter/nwfilter_learnipaddr.c, util/virnetdevvportprofile.c: Update
for API renames and error handling changes
---
src/libvirt_private.syms | 4 +-
src/nwfilter/nwfilter_gentech_driver.c | 13 +++--
src/nwfilter/nwfilter_learnipaddr.c | 22 ++++---
src/util/interface.c | 103 ++++++++++++++++----------------
src/util/interface.h | 6 +-
src/util/virnetdevmacvlan.c | 17 ++++--
src/util/virnetdevvportprofile.c | 6 +-
7 files changed, 92 insertions(+), 79 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 9706efc..8206b23 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -576,12 +576,12 @@ virHookPresent;
# interface.h
ifaceCheck;
-ifaceGetIndex;
+virNetDevGetIndex;
ifaceGetIPAddress;
ifaceGetNthParent;
ifaceGetPhysicalFunction;
ifaceGetVirtualFunctionIndex;
-ifaceGetVlanID;
+virNetDevGetVLanID;
ifaceIsVirtualFunction;
virNetDevMacVLanCreate;
virNetDevMacVLanDelete;
diff --git a/src/nwfilter/nwfilter_gentech_driver.c b/src/nwfilter/nwfilter_gentech_driver.c
index 899bd32..9f44aef 100644
--- a/src/nwfilter/nwfilter_gentech_driver.c
+++ b/src/nwfilter/nwfilter_gentech_driver.c
@@ -903,9 +903,10 @@ _virNWFilterInstantiateFilter(virConnectPtr conn,
/* after grabbing the filter update lock check for the interface; if
it's not there anymore its filters will be or are being removed
(while holding the lock) and we don't want to build new ones */
- if (ifaceGetIndex(false, net->ifname, &ifindex) < 0) {
+ if (virNetDevGetIndex(net->ifname, &ifindex) < 0) {
/* interfaces / VMs can disappear during filter instantiation;
don't mark it as an error */
+ virResetLastError();
rc = 0;
goto cleanup;
}
@@ -1021,8 +1022,9 @@ int virNWFilterRollbackUpdateFilter(virConnectPtr conn,
}
/* don't tear anything while the address is being learned */
- if (ifaceGetIndex(true, net->ifname, &ifindex) == 0 &&
- virNWFilterLookupLearnReq(ifindex) != NULL)
+ if (virNetDevGetIndex(net->ifname, &ifindex) < 0)
+ virResetLastError();
+ else if (virNWFilterLookupLearnReq(ifindex) != NULL)
return 0;
return techdriver->tearNewRules(conn, net->ifname);
@@ -1047,8 +1049,9 @@ virNWFilterTearOldFilter(virConnectPtr conn,
}
/* don't tear anything while the address is being learned */
- if (ifaceGetIndex(true, net->ifname, &ifindex) == 0 &&
- virNWFilterLookupLearnReq(ifindex) != NULL)
+ if (virNetDevGetIndex(net->ifname, &ifindex) < 0)
+ virResetLastError();
+ else if (virNWFilterLookupLearnReq(ifindex) != NULL)
return 0;
return techdriver->tearOldRules(conn, net->ifname);
diff --git a/src/nwfilter/nwfilter_learnipaddr.c b/src/nwfilter/nwfilter_learnipaddr.c
index 68bdcfc..9a51fc2 100644
--- a/src/nwfilter/nwfilter_learnipaddr.c
+++ b/src/nwfilter/nwfilter_learnipaddr.c
@@ -252,21 +252,23 @@ virNWFilterTerminateLearnReq(const char *ifname) {
int ifindex;
virNWFilterIPAddrLearnReqPtr req;
- if (ifaceGetIndex(false, ifname, &ifindex) == 0) {
-
- IFINDEX2STR(ifindex_str, ifindex);
+ if (virNetDevGetIndex(ifname, &ifindex) < 0) {
+ virResetLastError();
+ return rc;
+ }
- virMutexLock(&pendingLearnReqLock);
+ IFINDEX2STR(ifindex_str, ifindex);
- req = virHashLookup(pendingLearnReq, ifindex_str);
- if (req) {
- rc = 0;
- req->terminate = true;
- }
+ virMutexLock(&pendingLearnReqLock);
- virMutexUnlock(&pendingLearnReqLock);
+ req = virHashLookup(pendingLearnReq, ifindex_str);
+ if (req) {
+ rc = 0;
+ req->terminate = true;
}
+ virMutexUnlock(&pendingLearnReqLock);
+
return rc;
}
diff --git a/src/util/interface.c b/src/util/interface.c
index ebe537e..af1def2 100644
--- a/src/util/interface.c
+++ b/src/util/interface.c
@@ -115,8 +115,9 @@ ifaceCheck(bool reportError, const char *ifname,
}
if (ifindex != -1) {
- rc = ifaceGetIndex(reportError, ifname, &idx);
- if (rc == 0 && idx != ifindex)
+ if (virNetDevGetIndex(ifname, &idx) < 0)
+ virResetLastError();
+ else if (idx != ifindex)
rc = -ENODEV;
}
@@ -141,114 +142,112 @@ ifaceCheck(bool reportError ATTRIBUTE_UNUSED,
/**
- * ifaceGetIndex
- *
- * @reportError: whether to report errors or keep silent
+ * virNetDevGetIndex
* @ifname : Name of the interface whose index is to be found
* @ifindex: Pointer to int where the index will be written into
*
* Get the index of an interface given its name.
*
- * Returns 0 on success, -errno on failure.
- * -ENODEV : if interface with given name does not exist
- * -EINVAL : if interface name is invalid (too long)
+ * Returns 0 on success, -1 on failure
*/
#ifdef __linux__
int
-ifaceGetIndex(bool reportError, const char *ifname, int *ifindex)
+virNetDevGetIndex(const char *ifname, int *ifindex)
{
- int rc = 0;
+ int ret = -1;
struct ifreq ifreq;
int fd = socket(PF_PACKET, SOCK_DGRAM, 0);
- if (fd < 0)
- return -errno;
+ if (fd < 0) {
+ virReportSystemError(errno, "%s",
+ _("Unable to open control socket"));
+ return -1;
+ }
memset(&ifreq, 0, sizeof(ifreq));
if (virStrncpy(ifreq.ifr_name, ifname, strlen(ifname),
sizeof(ifreq.ifr_name)) == NULL) {
- if (reportError)
- ifaceError(VIR_ERR_INTERNAL_ERROR,
- _("invalid interface name %s"),
- ifname);
- rc = -EINVAL;
+ virReportSystemError(ERANGE,
+ _("invalid interface name %s"),
+ ifname);
goto cleanup;
}
- if (ioctl(fd, SIOCGIFINDEX, &ifreq) >= 0)
- *ifindex = ifreq.ifr_ifindex;
- else {
- if (reportError)
- ifaceError(VIR_ERR_INTERNAL_ERROR,
- _("interface %s does not exist"),
- ifname);
- rc = -ENODEV;
+ if (ioctl(fd, SIOCGIFINDEX, &ifreq) < 0) {
+ virReportSystemError(errno,
+ _("Unable to get index for interface %s"), ifname);
+ goto cleanup;
}
+ *ifindex = ifreq.ifr_ifindex;
+ ret = 0;
+
cleanup:
VIR_FORCE_CLOSE(fd);
-
- return rc;
+ return ret;
}
#else
int
-ifaceGetIndex(bool reportError,
- const char *ifname ATTRIBUTE_UNUSED,
- int *ifindex ATTRIBUTE_UNUSED)
+virNetDevGetIndex(const char *ifname ATTRIBUTE_UNUSED,
+ int *ifindex ATTRIBUTE_UNUSED)
{
- if (reportError) {
- ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("ifaceGetIndex is not supported on non-linux platforms"));
- }
-
- return -ENOSYS;
+ virReportSystemError(ENOSYS, "%s",
+ _("Unable to get interface index on this platform"));
+ return -1;
}
#endif /* __linux__ */
#ifdef __linux__
int
-ifaceGetVlanID(const char *vlanifname, int *vlanid) {
+virNetDevGetVLanID(const char *ifname, int *vlanid)
+{
struct vlan_ioctl_args vlanargs = {
.cmd = GET_VLAN_VID_CMD,
};
- int rc = 0;
+ int ret = -1;
int fd = socket(PF_PACKET, SOCK_DGRAM, 0);
- if (fd < 0)
- return -errno;
+ if (fd < 0) {
+ virReportSystemError(errno, "%s",
+ _("Unable to open control socket"));
+ return -1;
+ }
- if (virStrcpyStatic(vlanargs.device1, vlanifname) == NULL) {
- rc = -EINVAL;
+ if (virStrcpyStatic(vlanargs.device1, ifname) == NULL) {
+ virReportSystemError(ERANGE,
+ _("invalid interface name %s"),
+ ifname);
goto cleanup;
}
if (ioctl(fd, SIOCGIFVLAN, &vlanargs) != 0) {
- rc = -errno;
+ virReportSystemError(errno,
+ _("Unable to get VLAN for interface %s"), ifname);
goto cleanup;
}
*vlanid = vlanargs.u.VID;
+ ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
- return rc;
+ return ret;
}
#else
int
-ifaceGetVlanID(const char *vlanifname ATTRIBUTE_UNUSED,
- int *vlanid ATTRIBUTE_UNUSED) {
-
- ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("ifaceGetVlanID is not supported on non-linux platforms"));
-
- return -ENOSYS;
+virNetDevGetVLanID(const char *ifname ATTRIBUTE_UNUSED,
+ int *vlanid ATTRIBUTE_UNUSED)
+{
+ virReportSystemError(ENOSYS, "%s",
+ _("Unable to get VLAN on this platform"));
+ return -1;
}
#endif /* __linux__ */
@@ -496,7 +495,7 @@ ifaceGetNthParent(int ifindex, const char *ifname, unsigned int nthParent,
*nth = 0;
- if (ifindex <= 0 && ifaceGetIndex(true, ifname, &ifindex) < 0)
+ if (ifindex <= 0 && virNetDevGetIndex(ifname, &ifindex) < 0)
return -1;
while (!end && i <= nthParent) {
diff --git a/src/util/interface.h b/src/util/interface.h
index e322a21..51d5c28 100644
--- a/src/util/interface.h
+++ b/src/util/interface.h
@@ -33,9 +33,11 @@ struct nlattr;
int ifaceCheck(bool reportError, const char *ifname,
const unsigned char *macaddr, int ifindex);
-int ifaceGetIndex(bool reportError, const char *ifname, int *ifindex);
+int virNetDevGetIndex(const char *ifname, int *ifindex)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
-int ifaceGetVlanID(const char *vlanifname, int *vlanid);
+int virNetDevGetVLanID(const char *ifname, int *vlanid)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
int ifaceGetIPAddress(const char *ifname, virSocketAddrPtr addr);
diff --git a/src/util/virnetdevmacvlan.c b/src/util/virnetdevmacvlan.c
index 6e09440..a832f06 100644
--- a/src/util/virnetdevmacvlan.c
+++ b/src/util/virnetdevmacvlan.c
@@ -107,7 +107,7 @@ virNetDevMacVLanCreate(const char *ifname,
struct nl_msg *nl_msg;
struct nlattr *linkinfo, *info_data;
- if (ifaceGetIndex(true, srcdev, &ifindex) < 0)
+ if (virNetDevGetIndex(srcdev, &ifindex) < 0)
return -1;
*retry = 0;
@@ -481,7 +481,7 @@ int virNetDevMacVLanCreateWithVPortProfile(const char *tgifname,
int retries, do_retry = 0;
uint32_t macvtapMode;
const char *cr_ifname;
- int ifindex;
+ int ret;
macvtapMode = modeMap[mode];
@@ -502,13 +502,16 @@ int virNetDevMacVLanCreateWithVPortProfile(const char *tgifname,
}
if (tgifname) {
- if(ifaceGetIndex(false, tgifname, &ifindex) == 0) {
+ if ((ret = virNetDevExists(tgifname)) < 0)
+ return -1;
+
+ if (ret) {
if (STRPREFIX(tgifname,
MACVTAP_NAME_PREFIX)) {
goto create_name;
}
- virReportSystemError(errno,
- _("Interface %s already exists"), tgifname);
+ virReportSystemError(EEXIST,
+ _("Unable to create macvlan device %s"), tgifname);
return -1;
}
cr_ifname = tgifname;
@@ -521,7 +524,9 @@ create_name:
retries = 5;
for (c = 0; c < 8192; c++) {
snprintf(ifname, sizeof(ifname), MACVTAP_NAME_PATTERN, c);
- if (ifaceGetIndex(false, ifname, &ifindex) == -ENODEV) {
+ if ((ret = virNetDevExists(tgifname)) < 0)
+ return -1;
+ if (!ret) {
rc = virNetDevMacVLanCreate(ifname, type, macaddress, linkdev,
macvtapMode, &do_retry);
if (rc == 0)
diff --git a/src/util/virnetdevvportprofile.c b/src/util/virnetdevvportprofile.c
index 1e826db..3649033 100644
--- a/src/util/virnetdevvportprofile.c
+++ b/src/util/virnetdevvportprofile.c
@@ -544,8 +544,10 @@ virNetDevVPortProfileGetPhysdevAndVlan(const char *ifname, int *root_ifindex, ch
if (nth == 0)
break;
if (*vlanid == -1) {
- if (ifaceGetVlanID(root_ifname, vlanid) < 0)
+ if (virNetDevGetVLanID(root_ifname, vlanid) < 0) {
+ virResetLastError();
*vlanid = -1;
+ }
}
ifindex = *root_ifindex;
@@ -676,7 +678,7 @@ virNetDevVPortProfileOp8021Qbh(const char *ifname,
if (rc < 0)
goto err_exit;
- rc = ifaceGetIndex(true, physfndev, &ifindex);
+ rc = virNetDevGetIndex(physfndev, &ifindex);
if (rc < 0)
goto err_exit;
--
1.7.6.4
More information about the libvir-list
mailing list