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Author SHA1 Message Date
Daniel Veillard eca45f4a3f libvirt-0.5.0 upstream release, Daniel 2008-11-26 09:07:34 +00:00
Jesse Keating d475deef60 Initialize branch F-10 for libvirt 2008-11-07 04:56:41 +00:00
18 changed files with 679 additions and 4611 deletions
-31
View File
@@ -1,31 +0,0 @@
[suppress_function]
symbol_version_regexp = LIBVIRT_PRIVATE.*
soname_regexp = libvirt\\.so.*
[suppress_function]
symbol_version_regexp = LIBVIRT_ADMIN_PRIVATE.*
soname_regexp = libvirt-admin\\.so.*
[suppress_variable]
symbol_version_regexp = LIBVIRT_PRIVATE.*
soname_regexp = libvirt\\.so.*
[suppress_variable]
symbol_version_regexp = LIBVIRT_ADMIN_PRIVATE.*
soname_regexp = libvirt-admin\\.so.*
[suppress_function]
symbol_version_regexp = .*
soname_regexp = libvirt_storage_.*\\.so.*
[suppress_variable]
symbol_version_regexp = .*
soname_regexp = libvirt_storage_.*\\.so.*
[suppress_function]
symbol_version_regexp = .*
soname_regexp = libvirt_driver_.*\\.so.*
[suppress_variable]
symbol_version_regexp = .*
soname_regexp = libvirt_driver_.*\\.so.*
+6
View File
@@ -0,0 +1,6 @@
.build*.log
*.rpm
i686
x86_64
libvirt-*.tar.gz
libvirt-0.4.6.tar.gz
-5
View File
@@ -1,5 +0,0 @@
.build*.log
*.rpm
i686
x86_64
libvirt-*.tar.xz
@@ -1,29 +0,0 @@
From: Martin Kletzander <mkletzan@redhat.com>
Date: Fri, 16 Aug 2024 13:56:51 +0200
Subject: [PATCH] virarptable: Properly calculate rtattr length
Content-type: text/plain
Use convenience macro which does almost the same thing we were doing,
but also pads out the payload length to a multiple of NLMSG_ALIGNTO (4)
bytes.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
---
src/util/virarptable.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/src/util/virarptable.c b/src/util/virarptable.c
index 299dddd664..d8e41c5a86 100644
--- a/src/util/virarptable.c
+++ b/src/util/virarptable.c
@@ -102,8 +102,7 @@ virArpTableGet(void)
return table;
VIR_WARNINGS_NO_CAST_ALIGN
- parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
- nh->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
+ parse_rtattr(tb, NDA_MAX, NDA_RTA(r), NLMSG_PAYLOAD(nh, sizeof(*r)));
VIR_WARNINGS_RESET
if (tb[NDA_DST] == NULL || tb[NDA_LLADDR] == NULL)
@@ -1,34 +0,0 @@
From: Martin Kletzander <mkletzan@redhat.com>
Date: Fri, 16 Aug 2024 13:59:15 +0200
Subject: [PATCH] virarptable: Fix check for message length
Content-type: text/plain
The previous check was all wrong since it calculated the how long would
the netlink message be if the netlink header was the payload and then
subtracted that from the whole message length, a variable that was not
used later in the code. This check can fail if there are no additional
payloads, struct rtattr in particular, which we are parsing later,
however the RTA_OK macro would've caught that anyway.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
---
src/util/virarptable.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/src/util/virarptable.c b/src/util/virarptable.c
index d8e41c5a86..45ee76766f 100644
--- a/src/util/virarptable.c
+++ b/src/util/virarptable.c
@@ -81,10 +81,9 @@ virArpTableGet(void)
for (; NLMSG_OK(nh, msglen); nh = NLMSG_NEXT(nh, msglen)) {
VIR_WARNINGS_RESET
struct ndmsg *r = NLMSG_DATA(nh);
- int len = nh->nlmsg_len;
void *addr;
- if ((len -= NLMSG_LENGTH(sizeof(*nh))) < 0) {
+ if (nh->nlmsg_len < NLMSG_SPACE(sizeof(*r))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("wrong nlmsg len"));
goto cleanup;
@@ -1,46 +0,0 @@
From: Martin Kletzander <mkletzan@redhat.com>
Date: Fri, 16 Aug 2024 14:02:48 +0200
Subject: [PATCH] virarptable: End parsing earlier in case of NLMSG_DONE
Content-type: text/plain
Check for the last multipart message right as the first thing. The
presumption probably was that the last message might still contain a
payload we want to parse. However that cannot be true since that would
have to be a type RTM_NEWNEIGH. This was not caught because older
kernels were note sending NLMSG_DONE and probably relied on the fact
that the parsing just stops after all the messages are walked through,
which the NLMSG_OK macro successfully did.
Resolves: https://issues.redhat.com/browse/RHEL-52449
Resolves: https://bugzilla.redhat.com/2302245
Fixes: a176d67cdfaf5b8237a7e3a80d8be0e6bdf2d8fd
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
---
src/util/virarptable.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/util/virarptable.c b/src/util/virarptable.c
index 45ee76766f..20d11f97b0 100644
--- a/src/util/virarptable.c
+++ b/src/util/virarptable.c
@@ -83,6 +83,9 @@ virArpTableGet(void)
struct ndmsg *r = NLMSG_DATA(nh);
void *addr;
+ if (nh->nlmsg_type == NLMSG_DONE)
+ break;
+
if (nh->nlmsg_len < NLMSG_SPACE(sizeof(*r))) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("wrong nlmsg len"));
@@ -97,9 +100,6 @@ virArpTableGet(void)
(!(r->ndm_state == NUD_STALE || r->ndm_state == NUD_REACHABLE)))
continue;
- if (nh->nlmsg_type == NLMSG_DONE)
- return table;
-
VIR_WARNINGS_NO_CAST_ALIGN
parse_rtattr(tb, NDA_MAX, NDA_RTA(r), NLMSG_PAYLOAD(nh, sizeof(*r)));
VIR_WARNINGS_RESET
@@ -1,315 +0,0 @@
From 807e2670f2704c41f0a1dca81a5d2f2f9336137c Mon Sep 17 00:00:00 2001
From: Laine Stump <laine@redhat.com>
Date: Mon, 25 Nov 2024 22:24:44 -0500
Subject: [PATCH 4/9] util: use a single flags arg for virNetDevBandwidthSet(),
not multiple bools
Having two bools in the arg list is on the borderline of being
confusing to anyone trying to read the code, but we're about to add a
3rd. This patch replaces the two bools with a single flags argument
which will instead have one or more bits from virNetDevBandwidthFlags
set.
Signed-off-by: Laine Stump <laine@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---
src/lxc/lxc_driver.c | 8 ++++++--
src/lxc/lxc_process.c | 8 ++++++--
src/network/bridge_driver.c | 10 ++++++++--
src/qemu/qemu_command.c | 11 ++++++++---
src/qemu/qemu_driver.c | 29 ++++++++++++++-------------
src/qemu/qemu_hotplug.c | 22 +++++++++++++++------
src/util/virnetdevbandwidth.c | 36 ++++++++++++++++++++--------------
src/util/virnetdevbandwidth.h | 9 +++++++--
tests/virnetdevbandwidthtest.c | 8 +++++++-
9 files changed, 94 insertions(+), 47 deletions(-)
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 534e257f30..b693980dbb 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -3570,8 +3570,12 @@ lxcDomainAttachDeviceNetLive(virLXCDriver *driver,
actualBandwidth = virDomainNetGetActualBandwidth(net);
if (actualBandwidth) {
if (virNetDevSupportsBandwidth(actualType)) {
- if (virNetDevBandwidthSet(net->ifname, actualBandwidth, false,
- !virDomainNetTypeSharesHostView(net)) < 0)
+ unsigned int flags = 0;
+
+ if (!virDomainNetTypeSharesHostView(net))
+ flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+
+ if (virNetDevBandwidthSet(net->ifname, actualBandwidth, flags) < 0)
goto cleanup;
} else {
VIR_WARN("setting bandwidth on interfaces of "
diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c
index f5eb5383ec..0e689fbb70 100644
--- a/src/lxc/lxc_process.c
+++ b/src/lxc/lxc_process.c
@@ -605,8 +605,12 @@ virLXCProcessSetupInterfaces(virLXCDriver *driver,
actualBandwidth = virDomainNetGetActualBandwidth(net);
if (actualBandwidth) {
if (virNetDevSupportsBandwidth(type)) {
- if (virNetDevBandwidthSet(net->ifname, actualBandwidth, false,
- !virDomainNetTypeSharesHostView(net)) < 0)
+ unsigned int flags = 0;
+
+ if (!virDomainNetTypeSharesHostView(net))
+ flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+
+ if (virNetDevBandwidthSet(net->ifname, actualBandwidth, flags) < 0)
goto cleanup;
} else {
VIR_WARN("setting bandwidth on interfaces of "
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 32572c755f..1c53636450 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -2058,8 +2058,11 @@ networkStartNetworkVirtual(virNetworkDriverState *driver,
}
}
- if (virNetDevBandwidthSet(def->bridge, def->bandwidth, true, true) < 0)
+ if (virNetDevBandwidthSet(def->bridge, def->bandwidth,
+ VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS
+ | VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED) < 0) {
goto error;
+ }
return 0;
@@ -2141,8 +2144,11 @@ networkStartNetworkBridge(virNetworkObj *obj)
* type BRIDGE, is started. On failure, undo anything you've done,
* and return -1. On success return 0.
*/
- if (virNetDevBandwidthSet(def->bridge, def->bandwidth, true, true) < 0)
+ if (virNetDevBandwidthSet(def->bridge, def->bandwidth,
+ VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS
+ | VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED) < 0) {
goto error;
+ }
if (networkStartHandleMACTableManagerMode(obj) < 0)
goto error;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index f15e6bda1e..b4815e5e71 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -8840,9 +8840,14 @@ qemuBuildInterfaceCommandLine(virQEMUDriver *driver,
def->uuid,
!virDomainNetTypeSharesHostView(net)) < 0)
goto cleanup;
- } else if (virNetDevBandwidthSet(net->ifname, actualBandwidth, false,
- !virDomainNetTypeSharesHostView(net)) < 0) {
- goto cleanup;
+ } else {
+ unsigned int flags = 0;
+
+ if (!virDomainNetTypeSharesHostView(net))
+ flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+
+ if (virNetDevBandwidthSet(net->ifname, actualBandwidth, flags) < 0)
+ goto cleanup;
}
} else {
VIR_WARN("setting bandwidth on interfaces of "
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 736602333e..14929616e5 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -9941,21 +9941,22 @@ qemuDomainSetInterfaceParameters(virDomainPtr dom,
virErrorRestore(&orig_err);
goto endjob;
}
- } else if (virNetDevBandwidthSet(net->ifname, newBandwidth, false,
- !virDomainNetTypeSharesHostView(net)) < 0) {
- virErrorPtr orig_err;
-
- virErrorPreserveLast(&orig_err);
- ignore_value(virNetDevBandwidthSet(net->ifname,
- net->bandwidth,
- false,
- !virDomainNetTypeSharesHostView(net)));
- if (net->bandwidth) {
- ignore_value(virDomainNetBandwidthUpdate(net,
- net->bandwidth));
+ } else {
+ unsigned int bwflags = 0;
+
+ if (!virDomainNetTypeSharesHostView(net))
+ bwflags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+
+ if (virNetDevBandwidthSet(net->ifname, newBandwidth, bwflags) < 0) {
+ virErrorPtr orig_err;
+
+ virErrorPreserveLast(&orig_err);
+ ignore_value(virNetDevBandwidthSet(net->ifname, net->bandwidth, bwflags));
+ if (net->bandwidth)
+ ignore_value(virDomainNetBandwidthUpdate(net, net->bandwidth));
+ virErrorRestore(&orig_err);
+ goto endjob;
}
- virErrorRestore(&orig_err);
- goto endjob;
}
/* If the old bandwidth was cleared out, restore qdisc. */
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 7cb1800504..d5e7e99359 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1279,9 +1279,14 @@ qemuDomainAttachNetDevice(virQEMUDriver *driver,
vm->def->uuid,
!virDomainNetTypeSharesHostView(net)) < 0)
goto cleanup;
- } else if (virNetDevBandwidthSet(net->ifname, actualBandwidth, false,
- !virDomainNetTypeSharesHostView(net)) < 0) {
- goto cleanup;
+ } else {
+ int flags = 0;
+
+ if (!virDomainNetTypeSharesHostView(net))
+ flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+
+ if (virNetDevBandwidthSet(net->ifname, actualBandwidth, flags) < 0)
+ goto cleanup;
}
} else {
VIR_WARN("setting bandwidth on interfaces of "
@@ -4082,9 +4087,14 @@ qemuDomainChangeNet(virQEMUDriver *driver,
vm->def->uuid,
!virDomainNetTypeSharesHostView(newdev)) < 0)
goto cleanup;
- } else if (virNetDevBandwidthSet(newdev->ifname, newb, false,
- !virDomainNetTypeSharesHostView(newdev)) < 0) {
- goto cleanup;
+ } else {
+ int flags = 0;
+
+ if (!virDomainNetTypeSharesHostView(newdev))
+ flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+
+ if (virNetDevBandwidthSet(newdev->ifname, newb, flags) < 0)
+ goto cleanup;
}
} else {
if (virDomainInterfaceClearQoS(vm->def, olddev) < 0)
diff --git a/src/util/virnetdevbandwidth.c b/src/util/virnetdevbandwidth.c
index 2b58c58d3e..1baad849c6 100644
--- a/src/util/virnetdevbandwidth.c
+++ b/src/util/virnetdevbandwidth.c
@@ -173,30 +173,35 @@ virNetDevBandwidthManipulateFilter(const char *ifname,
* virNetDevBandwidthSet:
* @ifname: on which interface
* @bandwidth: rates to set (may be NULL)
- * @hierarchical_class: whether to create hierarchical class
- * @swapped: true if IN/OUT should be set contrariwise
+ * @flags: bits indicating certain optional actions
*
+
* This function enables QoS on specified interface
* and set given traffic limits for both, incoming
- * and outgoing traffic. Any previous setting get
- * overwritten. If @hierarchical_class is TRUE, create
- * hierarchical class. It is used to guarantee minimal
- * throughput ('floor' attribute in NIC).
+ * and outgoing traffic.
+ *
+ * @flags bits and their meanings:
+ *
+ * VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS
+ * whether to create a hierarchical class
+ * A hiearchical class structure is used to implement a minimal
+ * throughput guarantee ('floor' attribute in NIC).
*
- * If @swapped is set, the IN part of @bandwidth is set on
- * @ifname's TX, and vice versa. If it is not set, IN is set on
- * RX and OUT on TX. This is because for some types of interfaces
- * domain and the host live on the same side of the interface (so
- * domain's RX/TX is host's RX/TX), and for some it's swapped
- * (domain's RX/TX is hosts's TX/RX).
+ * VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED
+ * set if IN/OUT should be set backwards from what's indicated in
+ * the bandwidth, i.e. the IN part of @bandwidth is set on
+ * @ifname's TX, and the OUT part of @bandwidth is set on
+ * @ifname's RX. This is needed because for some types of
+ * interfaces the domain and the host live on the same side of the
+ * interface (so domain's RX/TX is host's RX/TX), and for some
+ * it's swapped (domain's RX/TX is hosts's TX/RX).
*
* Return 0 on success, -1 otherwise.
*/
int
virNetDevBandwidthSet(const char *ifname,
const virNetDevBandwidth *bandwidth,
- bool hierarchical_class,
- bool swapped)
+ unsigned int flags)
{
int ret = -1;
virNetDevBandwidthRate *rx = NULL; /* From domain POV */
@@ -205,6 +210,7 @@ virNetDevBandwidthSet(const char *ifname,
char *average = NULL;
char *peak = NULL;
char *burst = NULL;
+ bool hierarchical_class = flags & VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS;
if (!bandwidth) {
/* nothing to be enabled */
@@ -224,7 +230,7 @@ virNetDevBandwidthSet(const char *ifname,
return -1;
}
- if (swapped) {
+ if (flags & VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED) {
rx = bandwidth->out;
tx = bandwidth->in;
} else {
diff --git a/src/util/virnetdevbandwidth.h b/src/util/virnetdevbandwidth.h
index 6d268fb119..80dc654486 100644
--- a/src/util/virnetdevbandwidth.h
+++ b/src/util/virnetdevbandwidth.h
@@ -39,11 +39,16 @@ void virNetDevBandwidthFree(virNetDevBandwidth *def);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(virNetDevBandwidth, virNetDevBandwidthFree);
+typedef enum {
+ VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS = (1 << 0),
+ VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED = (1 << 1),
+} virNetDevBandwidthSetFlags;
+
int virNetDevBandwidthSet(const char *ifname,
const virNetDevBandwidth *bandwidth,
- bool hierarchical_class,
- bool swapped)
+ unsigned int flags)
G_GNUC_WARN_UNUSED_RESULT;
+
int virNetDevBandwidthClear(const char *ifname);
int virNetDevBandwidthCopy(virNetDevBandwidth **dest,
const virNetDevBandwidth *src)
diff --git a/tests/virnetdevbandwidthtest.c b/tests/virnetdevbandwidthtest.c
index f7c38faa2e..6529ff4026 100644
--- a/tests/virnetdevbandwidthtest.c
+++ b/tests/virnetdevbandwidthtest.c
@@ -82,8 +82,14 @@ testVirNetDevBandwidthSet(const void *data)
if (virNetDevOpenvswitchInterfaceSetQos(iface, band, info->uuid, true) < 0)
return -1;
} else {
+ unsigned int flags = VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+
+ if (info->hierarchical_class)
+ flags |= VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS;
+
exp_cmd = info->exp_cmd_tc;
- if (virNetDevBandwidthSet(iface, band, info->hierarchical_class, true) < 0)
+
+ if (virNetDevBandwidthSet(iface, band, flags) < 0)
return -1;
}
--
2.47.1
@@ -1,185 +0,0 @@
From 490f58382dca2a415a5f16b6133f298d853bb379 Mon Sep 17 00:00:00 2001
From: Laine Stump <laine@redhat.com>
Date: Mon, 25 Nov 2024 22:24:45 -0500
Subject: [PATCH 5/9] util: make it optional to clear existing tc
qdiscs/filters in virNetDevBandwidthSet()
virNetDevBandwidthSet() always clears all existing qdiscs and their
subordinate filters before adding all the new qdiscs/filters. This is
normally exactly what we want, but there is one case (the network
driver) where the Qdisc added by virNetDevBandwidthSet() may already
be in use by the nftables backend (which will add a rule to fix the
checksum of dhcp packets); in that case, we *don't* want
virNetDevBandwidthSet() to clear out the qdisc that was already added
for nftables, and none of the bandwidth filters have been added yet,
so there already aren't any "old" filters that need to be removed
either - it is safe to just skip virNetDevBandwidthClear() in this
case.
To allow the network driver to set bandwidth without first clearing
it, this patch adds the flag VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL to the
virNetDevBandwidthSetFlags enum, and recognizes it in
virNetDevBandwidthSet() - if the flag is set, then
virNetDevBandwidth() will call virNetDevBandwidthClear() just as it
always has. But if the flag isn't set it *won't* call
virNetDevBandwidthClear().
As suggested above, VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL is set for all
calls to virNetdevBandwidthSet() except for two places in the network
driver.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---
src/lxc/lxc_driver.c | 2 +-
src/lxc/lxc_process.c | 2 +-
src/qemu/qemu_command.c | 2 +-
src/qemu/qemu_driver.c | 2 +-
src/qemu/qemu_hotplug.c | 4 ++--
src/util/virnetdevbandwidth.c | 21 ++++++++++++++++++++-
src/util/virnetdevbandwidth.h | 1 +
tests/virnetdevbandwidthtest.c | 3 ++-
8 files changed, 29 insertions(+), 8 deletions(-)
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index b693980dbb..81581c74df 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -3570,7 +3570,7 @@ lxcDomainAttachDeviceNetLive(virLXCDriver *driver,
actualBandwidth = virDomainNetGetActualBandwidth(net);
if (actualBandwidth) {
if (virNetDevSupportsBandwidth(actualType)) {
- unsigned int flags = 0;
+ unsigned int flags = VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL;
if (!virDomainNetTypeSharesHostView(net))
flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c
index 0e689fbb70..081ce03a57 100644
--- a/src/lxc/lxc_process.c
+++ b/src/lxc/lxc_process.c
@@ -605,7 +605,7 @@ virLXCProcessSetupInterfaces(virLXCDriver *driver,
actualBandwidth = virDomainNetGetActualBandwidth(net);
if (actualBandwidth) {
if (virNetDevSupportsBandwidth(type)) {
- unsigned int flags = 0;
+ unsigned int flags = VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL;
if (!virDomainNetTypeSharesHostView(net))
flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index b4815e5e71..ed54fd4c5b 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -8841,7 +8841,7 @@ qemuBuildInterfaceCommandLine(virQEMUDriver *driver,
!virDomainNetTypeSharesHostView(net)) < 0)
goto cleanup;
} else {
- unsigned int flags = 0;
+ unsigned int flags = VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL;
if (!virDomainNetTypeSharesHostView(net))
flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 14929616e5..9549065b1f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -9942,7 +9942,7 @@ qemuDomainSetInterfaceParameters(virDomainPtr dom,
goto endjob;
}
} else {
- unsigned int bwflags = 0;
+ unsigned int bwflags = VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL;
if (!virDomainNetTypeSharesHostView(net))
bwflags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index d5e7e99359..ceda4119cd 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1280,7 +1280,7 @@ qemuDomainAttachNetDevice(virQEMUDriver *driver,
!virDomainNetTypeSharesHostView(net)) < 0)
goto cleanup;
} else {
- int flags = 0;
+ int flags = VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL;
if (!virDomainNetTypeSharesHostView(net))
flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
@@ -4088,7 +4088,7 @@ qemuDomainChangeNet(virQEMUDriver *driver,
!virDomainNetTypeSharesHostView(newdev)) < 0)
goto cleanup;
} else {
- int flags = 0;
+ int flags = VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL;
if (!virDomainNetTypeSharesHostView(newdev))
flags |= VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
diff --git a/src/util/virnetdevbandwidth.c b/src/util/virnetdevbandwidth.c
index 1baad849c6..9c48844c5d 100644
--- a/src/util/virnetdevbandwidth.c
+++ b/src/util/virnetdevbandwidth.c
@@ -196,6 +196,21 @@ virNetDevBandwidthManipulateFilter(const char *ifname,
* interface (so domain's RX/TX is host's RX/TX), and for some
* it's swapped (domain's RX/TX is hosts's TX/RX).
*
+ * VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL
+ * If VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL is set, then the root
+ * qdisc is deleted before adding any new qdisc/class/filter,
+ * which causes any pre-existing filters to also be deleted. If
+ * not set, then it's assumed that there are no existing rules (or
+ * that those already there need to be kept). The caller should
+ * set this flag for an existing interface that is having its
+ * bandwidth settings modified, but can leave it unset if the
+ * interface was newly created and this is the first time
+ * bandwidth has been set, but someone else might have already
+ * added the qdisc (e.g. this is the case when the network driver
+ * is setting bandwidth for a virtual network bridge device - the
+ * nftables backend may have already added qdisc handle 1:0 and a
+ * filter, and we don't want to delete them)
+ *
* Return 0 on success, -1 otherwise.
*/
int
@@ -238,7 +253,11 @@ virNetDevBandwidthSet(const char *ifname,
tx = bandwidth->out;
}
- virNetDevBandwidthClear(ifname);
+ /* Only if the caller requests, clear everything including root
+ * qdisc and all filters before adding everything.
+ */
+ if (flags & VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL)
+ virNetDevBandwidthClear(ifname);
if (tx && tx->average) {
average = g_strdup_printf("%llukbps", tx->average);
diff --git a/src/util/virnetdevbandwidth.h b/src/util/virnetdevbandwidth.h
index 80dc654486..744aa4c826 100644
--- a/src/util/virnetdevbandwidth.h
+++ b/src/util/virnetdevbandwidth.h
@@ -42,6 +42,7 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(virNetDevBandwidth, virNetDevBandwidthFree);
typedef enum {
VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS = (1 << 0),
VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED = (1 << 1),
+ VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL = (1 << 2),
} virNetDevBandwidthSetFlags;
int virNetDevBandwidthSet(const char *ifname,
diff --git a/tests/virnetdevbandwidthtest.c b/tests/virnetdevbandwidthtest.c
index 6529ff4026..6d5c847ad7 100644
--- a/tests/virnetdevbandwidthtest.c
+++ b/tests/virnetdevbandwidthtest.c
@@ -82,7 +82,8 @@ testVirNetDevBandwidthSet(const void *data)
if (virNetDevOpenvswitchInterfaceSetQos(iface, band, info->uuid, true) < 0)
return -1;
} else {
- unsigned int flags = VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED;
+ unsigned int flags = VIR_NETDEV_BANDWIDTH_SET_DIR_SWAPPED |
+ VIR_NETDEV_BANDWIDTH_SET_CLEAR_ALL;
if (info->hierarchical_class)
flags |= VIR_NETDEV_BANDWIDTH_SET_HIERARCHICAL_CLASS;
--
2.47.1
@@ -1,98 +0,0 @@
From faebbbbfa3b1bd4120852b3f416c8073ab82d5c5 Mon Sep 17 00:00:00 2001
From: Laine Stump <laine@redhat.com>
Date: Mon, 25 Nov 2024 22:24:46 -0500
Subject: [PATCH 6/9] util: put the command that adds a tx filter qdisc into a
separate function
virNetDevBandwidthSet() adds a queue discipline (qdisc) for each
interface that it will need to add tc transmit filters to, and the
filters are then attached to the qdisc.
There are other circumstances where some other function will need to
add tc transmit filters to an interface (in particular an upcoming
patch to the network driver nftables backend that will use a tc tx
filter to fix the checksum of dhcp packets), so that function will
also need a qdisc for the tx filter. To assure both always use exactly
the same qdisc, this patch puts the command that adds the tx filter
qdisc into a separate helper function that can (and will) be called
from either place
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---
src/libvirt_private.syms | 1 +
src/util/virnetdevbandwidth.c | 30 +++++++++++++++++++++++++-----
src/util/virnetdevbandwidth.h | 3 +++
3 files changed, 29 insertions(+), 5 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index d15d6a6a9d..0211cee967 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2859,6 +2859,7 @@ virNetDevVFInterfaceStats;
# util/virnetdevbandwidth.h
+virNetDevBandWidthAddTxFilterParentQdisc;
virNetDevBandwidthClear;
virNetDevBandwidthCopy;
virNetDevBandwidthEqual;
diff --git a/src/util/virnetdevbandwidth.c b/src/util/virnetdevbandwidth.c
index 9c48844c5d..90eebe6576 100644
--- a/src/util/virnetdevbandwidth.c
+++ b/src/util/virnetdevbandwidth.c
@@ -266,11 +266,7 @@ virNetDevBandwidthSet(const char *ifname,
if (tx->burst)
burst = g_strdup_printf("%llukb", tx->burst);
- cmd = virCommandNew(TC);
- virCommandAddArgList(cmd, "qdisc", "add", "dev", ifname, "root",
- "handle", "1:", "htb", "default",
- hierarchical_class ? "2" : "1", NULL);
- if (virCommandRun(cmd, NULL) < 0)
+ if (virNetDevBandWidthAddTxFilterParentQdisc(ifname, hierarchical_class) < 0)
goto cleanup;
/* If we are creating a hierarchical class, all non guaranteed traffic
@@ -794,3 +790,27 @@ virNetDevBandwidthSetRootQDisc(const char *ifname,
return 0;
}
+
+/**
+ * virNetDevBandwidthAddTxFilterParentQdisc:
+ * @ifname: name of interface that needs a qdisc to attach tx filters to
+ * @hierarchical_class: true if hierarchical classes will be used on this interface
+ *
+ * Add a root Qdisc (Queueing Discipline) for attaching Tx filters to
+ * @ifname.
+ *
+ * returns 0 on success, -1 on failure
+ */
+int
+virNetDevBandWidthAddTxFilterParentQdisc(const char *ifname,
+ bool hierarchical_class)
+{
+ g_autoptr(virCommand) cmd = NULL;
+
+ cmd = virCommandNew(TC);
+ virCommandAddArgList(cmd, "qdisc", "add", "dev", ifname, "root",
+ "handle", "1:", "htb", "default",
+ hierarchical_class ? "2" : "1", NULL);
+
+ return virCommandRun(cmd, NULL);
+}
diff --git a/src/util/virnetdevbandwidth.h b/src/util/virnetdevbandwidth.h
index 744aa4c826..65c1500637 100644
--- a/src/util/virnetdevbandwidth.h
+++ b/src/util/virnetdevbandwidth.h
@@ -84,3 +84,6 @@ int virNetDevBandwidthUpdateFilter(const char *ifname,
int virNetDevBandwidthSetRootQDisc(const char *ifname,
const char *qdisc)
G_NO_INLINE;
+
+int virNetDevBandWidthAddTxFilterParentQdisc(const char *ifname,
+ bool hierarchical_class);
--
2.47.1
@@ -1,107 +0,0 @@
From 73c0fb19ce5b816ee81ede691252855c75391c9a Mon Sep 17 00:00:00 2001
From: Laine Stump <laine@redhat.com>
Date: Mon, 25 Nov 2024 22:24:47 -0500
Subject: [PATCH 7/9] util: don't re-add the qdisc used for tx filters if it
already exists
There will soon be two separate users of tc on virtual networks, and
both will use the "qdisc root handle 1: htb" to add tx filters. One or the
other could get the first chance to add the qdisc, and then if at a
later time the other decides to use it, we need to prevent the 2nd
user from attempting to re-add the qdisc (because that just generates
an error).
We do this by running "tc qdisc show dev $bridge handle 1:" then
checking if the output of that command contains both "qdisc" and " 1:
".[*] If it does then the qdisc has already been added. If not then we
need to add it now.
[*]As of this writing, the output more exactly starts with "qdisc
htb 1: root", but our comparison is made purposefully generous to
increase the chances that it will continue to work properly if tc
modifies the format of its output.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---
src/util/virnetdevbandwidth.c | 35 ++++++++++++++++++++++++++++------
tests/virnetdevbandwidthtest.c | 3 +++
2 files changed, 32 insertions(+), 6 deletions(-)
diff --git a/src/util/virnetdevbandwidth.c b/src/util/virnetdevbandwidth.c
index 90eebe6576..5c6a65528c 100644
--- a/src/util/virnetdevbandwidth.c
+++ b/src/util/virnetdevbandwidth.c
@@ -805,12 +805,35 @@ int
virNetDevBandWidthAddTxFilterParentQdisc(const char *ifname,
bool hierarchical_class)
{
- g_autoptr(virCommand) cmd = NULL;
+ g_autoptr(virCommand) testCmd = NULL;
+ g_autofree char *testResult = NULL;
- cmd = virCommandNew(TC);
- virCommandAddArgList(cmd, "qdisc", "add", "dev", ifname, "root",
- "handle", "1:", "htb", "default",
- hierarchical_class ? "2" : "1", NULL);
+ /* first check it the qdisc with handle 1: was already added for
+ * this interface by someone else
+ */
+ testCmd = virCommandNew(TC);
+ virCommandAddArgList(testCmd, "qdisc", "show", "dev", ifname,
+ "handle", "1:", NULL);
+ virCommandSetOutputBuffer(testCmd, &testResult);
- return virCommandRun(cmd, NULL);
+ if (virCommandRun(testCmd, NULL) < 0)
+ return -1;
+
+ /* output will be something like: "qdisc htb 1: root refcnt ..."
+ * if the qdisc was already added. We just search for "qdisc" and
+ * " 1: " anywhere in the output to allow for tc changing its
+ * output format.
+ */
+ if (!(testResult && strstr(testResult, "qdisc") && strstr(testResult, " 1: "))) {
+ /* didn't find qdisc in output, so we need to add one */
+ g_autoptr(virCommand) addCmd = virCommandNew(TC);
+
+ virCommandAddArgList(addCmd, "qdisc", "add", "dev", ifname, "root",
+ "handle", "1:", "htb", "default",
+ hierarchical_class ? "2" : "1", NULL);
+
+ return virCommandRun(addCmd, NULL);
+ }
+
+ return 0;
}
diff --git a/tests/virnetdevbandwidthtest.c b/tests/virnetdevbandwidthtest.c
index 6d5c847ad7..31aa7f469d 100644
--- a/tests/virnetdevbandwidthtest.c
+++ b/tests/virnetdevbandwidthtest.c
@@ -147,6 +147,7 @@ mymain(void)
"</bandwidth>",
TC " qdisc del dev eth0 root\n"
TC " qdisc del dev eth0 ingress\n"
+ TC " qdisc show dev eth0 handle 1:\n"
TC " qdisc add dev eth0 root handle 1: htb default 1\n"
TC " class add dev eth0 parent 1: classid 1:1 htb rate 1024kbps quantum 87\n"
TC " qdisc add dev eth0 parent 1:1 handle 2: sfq perturb 10\n"
@@ -177,6 +178,7 @@ mymain(void)
"</bandwidth>",
TC " qdisc del dev eth0 root\n"
TC " qdisc del dev eth0 ingress\n"
+ TC " qdisc show dev eth0 handle 1:\n"
TC " qdisc add dev eth0 root handle 1: htb default 1\n"
TC " class add dev eth0 parent 1: classid 1:1 htb rate 1kbps ceil 2kbps burst 4kb quantum 1\n"
TC " qdisc add dev eth0 parent 1:1 handle 2: sfq perturb 10\n"
@@ -199,6 +201,7 @@ mymain(void)
"</bandwidth>",
TC " qdisc del dev eth0 root\n"
TC " qdisc del dev eth0 ingress\n"
+ TC " qdisc show dev eth0 handle 1:\n"
TC " qdisc add dev eth0 root handle 1: htb default 1\n"
TC " class add dev eth0 parent 1: classid 1:1 htb rate 4294967295kbps quantum 366503875\n"
TC " qdisc add dev eth0 parent 1:1 handle 2: sfq perturb 10\n"
--
2.47.1
@@ -1,171 +0,0 @@
From dac9cb9030ac03d18f59884864a0a253e3c9f8f1 Mon Sep 17 00:00:00 2001
From: Laine Stump <laine@redhat.com>
Date: Mon, 25 Nov 2024 22:24:48 -0500
Subject: [PATCH 8/9] util: add new "tc" layer for virFirewallCmd objects
If the layer of a virFirewallCmd is "tc", then the "tc" utility will
be executed using the arguments that had been added to the
virFirewallCmd
tc layer doesn't support auto-rollback command creation (any rollback
needs to be added manually with virFirewallAddRollbackCmd()), and also
tc layer isn't supported by the iptables backend (it would have been
straightforward to add, but the iptables backend doesn't need it, and
I didn't want to take the chance of causing a regression in that
code for no good reason).
Signed-off-by: Laine Stump <laine@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---
src/network/network_nftables.c | 1 +
src/util/virfirewall.c | 66 +++++++++++++++++++++-------------
src/util/virfirewall.h | 1 +
src/util/virfirewalld.c | 1 +
4 files changed, 44 insertions(+), 25 deletions(-)
diff --git a/src/network/network_nftables.c b/src/network/network_nftables.c
index 268d1f12ca..cc184105c3 100644
--- a/src/network/network_nftables.c
+++ b/src/network/network_nftables.c
@@ -73,6 +73,7 @@ VIR_ENUM_IMPL(nftablesLayer,
"",
"ip",
"ip6",
+ "",
);
diff --git a/src/util/virfirewall.c b/src/util/virfirewall.c
index 811b787ecc..9389bcf541 100644
--- a/src/util/virfirewall.c
+++ b/src/util/virfirewall.c
@@ -47,6 +47,7 @@ VIR_ENUM_IMPL(virFirewallLayer,
"ethernet",
"ipv4",
"ipv6",
+ "tc",
);
typedef struct _virFirewallGroup virFirewallGroup;
@@ -57,6 +58,7 @@ VIR_ENUM_IMPL(virFirewallLayerCommand,
EBTABLES,
IPTABLES,
IP6TABLES,
+ TC,
);
struct _virFirewallCmd {
@@ -591,6 +593,7 @@ virFirewallCmdIptablesApply(virFirewall *firewall,
case VIR_FIREWALL_LAYER_IPV6:
virCommandAddArg(cmd, "-w");
break;
+ case VIR_FIREWALL_LAYER_TC:
case VIR_FIREWALL_LAYER_LAST:
break;
}
@@ -672,39 +675,52 @@ virFirewallCmdNftablesApply(virFirewall *firewall G_GNUC_UNUSED,
size_t i;
int status;
- cmd = virCommandNew(NFT);
+ if (fwCmd->layer == VIR_FIREWALL_LAYER_TC) {
- if ((virFirewallTransactionGetFlags(firewall) & VIR_FIREWALL_TRANSACTION_AUTO_ROLLBACK) &&
- fwCmd->argsLen > 1) {
- /* skip any leading options to get to command verb */
- for (i = 0; i < fwCmd->argsLen - 1; i++) {
- if (fwCmd->args[i][0] != '-')
- break;
- }
+ /* for VIR_FIREWALL_LAYER_TC, we run the 'tc' (traffic control) command with
+ * the supplied args.
+ */
+ cmd = virCommandNew(TC);
- if (i + 1 < fwCmd->argsLen &&
- VIR_NFTABLES_ARG_IS_CREATE(fwCmd->args[i])) {
+ /* NB: RAW commands don't support auto-rollback command creation */
- cmdIdx = i;
- objectType = fwCmd->args[i + 1];
+ } else {
- /* we currently only handle auto-rollback for rules,
- * chains, and tables, and those all can be "rolled
- * back" by a delete command using the handle that is
- * returned when "-ae" is added to the add/insert
- * command.
- */
- if (STREQ_NULLABLE(objectType, "rule") ||
- STREQ_NULLABLE(objectType, "chain") ||
- STREQ_NULLABLE(objectType, "table")) {
+ cmd = virCommandNew(NFT);
- needRollback = true;
- /* this option to nft instructs it to add the
- * "handle" of the created object to stdout
+ if ((virFirewallTransactionGetFlags(firewall) & VIR_FIREWALL_TRANSACTION_AUTO_ROLLBACK) &&
+ fwCmd->argsLen > 1) {
+ /* skip any leading options to get to command verb */
+ for (i = 0; i < fwCmd->argsLen - 1; i++) {
+ if (fwCmd->args[i][0] != '-')
+ break;
+ }
+
+ if (i + 1 < fwCmd->argsLen &&
+ VIR_NFTABLES_ARG_IS_CREATE(fwCmd->args[i])) {
+
+ cmdIdx = i;
+ objectType = fwCmd->args[i + 1];
+
+ /* we currently only handle auto-rollback for rules,
+ * chains, and tables, and those all can be "rolled
+ * back" by a delete command using the handle that is
+ * returned when "-ae" is added to the add/insert
+ * command.
*/
- virCommandAddArg(cmd, "-ae");
+ if (STREQ_NULLABLE(objectType, "rule") ||
+ STREQ_NULLABLE(objectType, "chain") ||
+ STREQ_NULLABLE(objectType, "table")) {
+
+ needRollback = true;
+ /* this option to nft instructs it to add the
+ * "handle" of the created object to stdout
+ */
+ virCommandAddArg(cmd, "-ae");
+ }
}
}
+
}
for (i = 0; i < fwCmd->argsLen; i++)
diff --git a/src/util/virfirewall.h b/src/util/virfirewall.h
index bce51259d2..d42e60884b 100644
--- a/src/util/virfirewall.h
+++ b/src/util/virfirewall.h
@@ -39,6 +39,7 @@ typedef enum {
VIR_FIREWALL_LAYER_ETHERNET,
VIR_FIREWALL_LAYER_IPV4,
VIR_FIREWALL_LAYER_IPV6,
+ VIR_FIREWALL_LAYER_TC,
VIR_FIREWALL_LAYER_LAST,
} virFirewallLayer;
diff --git a/src/util/virfirewalld.c b/src/util/virfirewalld.c
index 827e201dbb..124523c420 100644
--- a/src/util/virfirewalld.c
+++ b/src/util/virfirewalld.c
@@ -43,6 +43,7 @@ VIR_LOG_INIT("util.firewalld");
VIR_ENUM_DECL(virFirewallLayerFirewallD);
VIR_ENUM_IMPL(virFirewallLayerFirewallD,
VIR_FIREWALL_LAYER_LAST,
+ "",
"eb",
"ipv4",
"ipv6",
--
2.47.1
@@ -1,687 +0,0 @@
From b1e2318a0d609fcdff04fcf88953ea87cdd02b95 Mon Sep 17 00:00:00 2001
From: Laine Stump <laine@redhat.com>
Date: Mon, 25 Nov 2024 22:24:49 -0500
Subject: [PATCH 9/9] network: add tc filter rule to nftables backend to fix
checksum of DHCP responses
Please see the commit log for commit v10.9.0-rc1-1-g42ab0148dd for the
history and explanation of the problem that this patch is fixing.
A shorter explanation is that when a guest is connected to a libvirt
virtual network using a virtio-net adapter with in-kernel "vhost-net"
packet processing enabled, it will fail to acquire an IP address from
a DHCP seever running on the host.
In commit v10.9.0-rc1-1-g42ab0148dd we tried fixing this by *zeroing
out* the checksums of these packets with an nftables rule (nftables
can't recompute the checksum, but it can set it to 0) . This
*appeared* to work initially, but it turned out that zeroing the
checksum ends up breaking dhcp packets on *non* virtio/vhost-net guest
interfaces. That attempt was reverted in commit v10.9.0-rc2.
Fortunately, there is an existing way to recompute the checksum of a
packet as it leaves an interface - the "tc" (traffic control) utility
that libvirt already uses for bandwidth management. This patch uses a
tc filter rule to match dhcp response packets on the bridge and
recompute their checksum.
The filter rule must be attached to a tc qdisc, which may also have a
filter attached for bandwidth management (in the <bandwidth> element
of the network config). Not only must we add the qdisc only once
(which was already handled by the patch two prior to this one), but
also the filter rule for checksum fixing and the filter rule for
bandwidth management must be different priorities so they don't clash;
this is solved by adding the checksum-fix filter with "priority 2",
while the bandwidth management filter remains "priority 1" (both will
always be evaluated anyway, it's just a matter of which is evaluated
first).
So far this method has worked with every different guest we could
throw at it, including several that failed with the previous method.
Fixes: b89c4991daa0ee9371f10937fab3b03c5ffdabc6
Reported-by: Rich Jones <rjones@redhat.com>
Reported-by: Andrea Bolognani <abologna@redhat.com>
Fix-Suggested-by: Eric Garver <egarver@redhat.com>
Fix-Suggested-by: Phil Sutter <psutter@redhat.com>
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---
src/network/network_nftables.c | 68 +++++++++++++++++++
.../forward-dev-linux.nftables | 40 +++++++++++
.../isolated-linux.nftables | 40 +++++++++++
.../nat-default-linux.nftables | 40 +++++++++++
.../nat-ipv6-linux.nftables | 40 +++++++++++
.../nat-ipv6-masquerade-linux.nftables | 40 +++++++++++
.../nat-many-ips-linux.nftables | 40 +++++++++++
.../nat-no-dhcp-linux.nftables | 40 +++++++++++
.../nat-port-range-ipv6-linux.nftables | 40 +++++++++++
.../nat-port-range-linux.nftables | 40 +++++++++++
.../nat-tftp-linux.nftables | 40 +++++++++++
.../route-default-linux.nftables | 40 +++++++++++
12 files changed, 508 insertions(+)
diff --git a/src/network/network_nftables.c b/src/network/network_nftables.c
index cc184105c3..748edb0273 100644
--- a/src/network/network_nftables.c
+++ b/src/network/network_nftables.c
@@ -29,6 +29,7 @@
#include "internal.h"
#include "virfirewalld.h"
+#include "vircommand.h"
#include "virerror.h"
#include "virlog.h"
#include "virhash.h"
@@ -924,6 +925,67 @@ nftablesAddIPSpecificFirewallRules(virFirewall *fw,
}
+/**
+ * nftablesAddUdpChecksumFixWithTC:
+ *
+ * Add a tc filter rule to @ifname (the bridge device of this network)
+ * that will recompute the checksum of udp packets output from @iface with
+ * destination port @port.
+ *
+ * Normally the checksum should be filled by some part of the basic
+ * network stack, but there are cases (e.g. DHCP response packets sent
+ * from virtualization host to a QEMU guest when the guest NIC uses
+ * vhost-net packet processing) when the host (sender) thinks that
+ * packet checksums will be computed elsewhere (and so leaves a
+ * partially computed checksum in the packet header) while the guest
+ * (receiver) thinks that the checksum has already been fully
+ * computed; in the meantime none of the code in between has actually
+ * finished computing the checksum.
+ *
+ * An example of this is DHCP response packets from host to guest. If
+ * the checksum of each of these packets isn't properly computed, then
+ * many guests (e.g. FreeBSD) will drop them with reason BAD CHECKSUM;
+ * this tc filter rule will fix the ip and udp checksums, and the
+ * FreeBSD dhcp client will happily accept the packet.
+ *
+ * (NB: if you're wondering how the tc qdisc and filter are removed
+ * when the network is destroyed, the answer is that the kernel
+ * automatically (and properly) removes them for us, so we don't need
+ * to worry about keeping track/deleting as we do with nftables rules)
+ */
+static int
+nftablesAddUdpChecksumFixWithTC(virFirewall *fw,
+ const char *iface,
+ int port)
+{
+ g_autofree char *portstr = g_strdup_printf("%d", port);
+
+ /* this will add the qdisc (that the filter below is attached to)
+ * unless it already exists
+ */
+ if (virNetDevBandWidthAddTxFilterParentQdisc(iface, true) < 0)
+ return -1;
+
+ /* add a filter to catch all udp packets with dst "port" and
+ * recompute their checksum
+ */
+ virFirewallAddCmd(fw, VIR_FIREWALL_LAYER_TC,
+ "filter", "add", "dev", iface,
+ "prio", "2", "protocol", "ip", "parent", "1:",
+ "u32", "match", "ip", "dport", portstr, "ffff",
+ "action", "csum", "ip", "and", "udp",
+ NULL);
+
+ virFirewallAddRollbackCmd(fw, VIR_FIREWALL_LAYER_TC,
+ "filter", "del", "dev", iface,
+ "prio", "2", "protocol", "ip", "parent", "1:",
+ "u32", "match", "ip", "dport", portstr, "ffff",
+ "action", "csum", "ip", "and", "udp",
+ NULL);
+ return 0;
+}
+
+
/* nftablesAddFirewallrules:
*
* @def - the network that needs an nftables firewall added
@@ -944,6 +1006,12 @@ nftablesAddFirewallRules(virNetworkDef *def, virFirewall **fwRemoval)
virFirewallStartTransaction(fw, VIR_FIREWALL_TRANSACTION_AUTO_ROLLBACK);
+ /* add the tc filter rule needed to fixup the checksum of dhcp
+ * response packets going from host to guest.
+ */
+ if (nftablesAddUdpChecksumFixWithTC(fw, def->bridge, 68) < 0)
+ return -1;
+
nftablesAddGeneralFirewallRules(fw, def);
for (i = 0;
diff --git a/tests/networkxml2firewalldata/forward-dev-linux.nftables b/tests/networkxml2firewalldata/forward-dev-linux.nftables
index 8badb74beb..6772383b37 100644
--- a/tests/networkxml2firewalldata/forward-dev-linux.nftables
+++ b/tests/networkxml2firewalldata/forward-dev-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/isolated-linux.nftables b/tests/networkxml2firewalldata/isolated-linux.nftables
index d1b4dac178..546a18b75a 100644
--- a/tests/networkxml2firewalldata/isolated-linux.nftables
+++ b/tests/networkxml2firewalldata/isolated-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-default-linux.nftables b/tests/networkxml2firewalldata/nat-default-linux.nftables
index 28508292f9..08623c1381 100644
--- a/tests/networkxml2firewalldata/nat-default-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-default-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-ipv6-linux.nftables b/tests/networkxml2firewalldata/nat-ipv6-linux.nftables
index d8a9ba706d..3fd6b94eef 100644
--- a/tests/networkxml2firewalldata/nat-ipv6-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-ipv6-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.nftables b/tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.nftables
index a7f09cda59..2811e098d1 100644
--- a/tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-ipv6-masquerade-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-many-ips-linux.nftables b/tests/networkxml2firewalldata/nat-many-ips-linux.nftables
index b826fe6134..5409d5b552 100644
--- a/tests/networkxml2firewalldata/nat-many-ips-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-many-ips-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-no-dhcp-linux.nftables b/tests/networkxml2firewalldata/nat-no-dhcp-linux.nftables
index d8a9ba706d..3fd6b94eef 100644
--- a/tests/networkxml2firewalldata/nat-no-dhcp-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-no-dhcp-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-port-range-ipv6-linux.nftables b/tests/networkxml2firewalldata/nat-port-range-ipv6-linux.nftables
index ceaed6fa40..d74417cdb3 100644
--- a/tests/networkxml2firewalldata/nat-port-range-ipv6-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-port-range-ipv6-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-port-range-linux.nftables b/tests/networkxml2firewalldata/nat-port-range-linux.nftables
index 1dc37a26ec..b55bb287a9 100644
--- a/tests/networkxml2firewalldata/nat-port-range-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-port-range-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/nat-tftp-linux.nftables b/tests/networkxml2firewalldata/nat-tftp-linux.nftables
index 28508292f9..08623c1381 100644
--- a/tests/networkxml2firewalldata/nat-tftp-linux.nftables
+++ b/tests/networkxml2firewalldata/nat-tftp-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
diff --git a/tests/networkxml2firewalldata/route-default-linux.nftables b/tests/networkxml2firewalldata/route-default-linux.nftables
index 282c9542a5..76d6902517 100644
--- a/tests/networkxml2firewalldata/route-default-linux.nftables
+++ b/tests/networkxml2firewalldata/route-default-linux.nftables
@@ -1,3 +1,43 @@
+tc \
+qdisc \
+show \
+dev \
+virbr0 \
+handle \
+1:
+tc \
+qdisc \
+add \
+dev \
+virbr0 \
+root \
+handle \
+1: \
+htb \
+default \
+2
+tc \
+filter \
+add \
+dev \
+virbr0 \
+prio \
+2 \
+protocol \
+ip \
+parent \
+1: \
+u32 \
+match \
+ip \
+dport \
+68 \
+ffff \
+action \
+csum \
+ip \
+and \
+udp
nft \
-ae insert \
rule \
--
2.47.1
@@ -1,51 +0,0 @@
From 114c0ec656e879ab4d67919914bb24cf5993106d Mon Sep 17 00:00:00 2001
Message-ID: <114c0ec656e879ab4d67919914bb24cf5993106d.1734201785.git.crobinso@redhat.com>
From: Laine Stump <laine@redhat.com>
Date: Mon, 2 Sep 2024 16:13:08 -0400
Subject: [PATCH] network: permit <forward mode='open'/> when a network has no
IP address
Content-type: text/plain
The whole point of <forward mode='open'/> is to supress libvirt from
adding any firewall rules for a network, and someone might want to
create a network with no IP address (i.e. they don't want the guests
to have connectivity to the host via this interface) and no firewall
rules (they don't want any, or they want to add their own). So there's
no reason to fail when a network has <forward mode='open'/> and also
has no IP address.
Kind-of-Resolves: https://gitlab.com/libvirt/libvirt/-/issues/588
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
---
src/conf/network_conf.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
index 5cf419acf1..320e1b089a 100644
--- a/src/conf/network_conf.c
+++ b/src/conf/network_conf.c
@@ -1789,7 +1789,6 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt,
case VIR_NETWORK_FORWARD_ROUTE:
case VIR_NETWORK_FORWARD_NAT:
- case VIR_NETWORK_FORWARD_OPEN:
/* It's pointless to specify L3 forwarding without specifying
* the network we're on.
*/
@@ -1806,8 +1805,10 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt,
def->name);
return NULL;
}
+ break;
- if (def->forward.type == VIR_NETWORK_FORWARD_OPEN && def->forward.nifs) {
+ case VIR_NETWORK_FORWARD_OPEN:
+ if (def->forward.nifs) {
/* an open network by definition can't place any restrictions
* on what traffic is allowed or where it goes, so specifying
* a forwarding device is nonsensical.
--
2.47.1
@@ -1,64 +0,0 @@
From d51179fa82448f4720f1645f0b7100df80508cc4 Mon Sep 17 00:00:00 2001
From: Pavel Hrdina <phrdina@redhat.com>
Date: Thu, 9 Jan 2025 16:23:44 +0100
Subject: [PATCH] qemu: snapshot: delete disk image only if parent snapshot is
external
Content-type: text/plain
When we are deleting external snapshot that is not active we only need
to delete overlay disk image of the parent snapshot. This works
correctly even if parent snapshot is external and active as it will have
another overlay created when user reverted to that snapshot.
In case the parent snapshot is internal there are no overlay disk images
created as everything is stored internally within the disk image. In
this case we would delete the actual disk image storing internal
snapshots and most likely the original disk image as well resulting in
data loss once the VM is shutoff.
Fixes: https://gitlab.com/libvirt/libvirt/-/issues/734
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
---
src/qemu/qemu_snapshot.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c
index 18b2e478f6..80cd54bf33 100644
--- a/src/qemu/qemu_snapshot.c
+++ b/src/qemu/qemu_snapshot.c
@@ -3144,6 +3144,8 @@ qemuSnapshotDeleteExternalPrepareData(virDomainObj *vm,
return -1;
}
+ data->parentSnap = qemuSnapshotFindParentSnapForDisk(snap, data->snapDisk);
+
if (data->merge) {
virStorageSource *snapDiskSrc = NULL;
@@ -3185,8 +3187,6 @@ qemuSnapshotDeleteExternalPrepareData(virDomainObj *vm,
qemuSnapshotGetDisksWithBackingStore(vm, snap, data);
}
- data->parentSnap = qemuSnapshotFindParentSnapForDisk(snap, data->snapDisk);
-
if (data->parentSnap && !virDomainSnapshotIsExternal(data->parentSnap)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("deleting external snapshot that has internal snapshot as parent not supported"));
@@ -3642,10 +3642,12 @@ qemuSnapshotDiscardExternal(virDomainObj *vm,
if (!data->job)
goto error;
} else {
- if (virStorageSourceInit(data->parentDomDisk->src) < 0 ||
- virStorageSourceUnlink(data->parentDomDisk->src) < 0) {
- VIR_WARN("Failed to remove snapshot image '%s'",
- data->snapDisk->name);
+ if (data->parentSnap && virDomainSnapshotIsExternal(data->parentSnap)) {
+ if (virStorageSourceInit(data->parentDomDisk->src) < 0 ||
+ virStorageSourceUnlink(data->parentDomDisk->src) < 0) {
+ VIR_WARN("Failed to remove snapshot image '%s'",
+ data->snapDisk->name);
+ }
}
}
}
+21
View File
@@ -0,0 +1,21 @@
# Makefile for source rpm: libvirt
# $Id$
NAME := libvirt
SPECFILE = $(firstword $(wildcard *.spec))
define find-makefile-common
for d in common ../common ../../common ; do if [ -f $$d/Makefile.common ] ; then if [ -f $$d/CVS/Root -a -w $$/Makefile.common ] ; then cd $$d ; cvs -Q update ; fi ; echo "$$d/Makefile.common" ; break ; fi ; done
endef
MAKEFILE_COMMON := $(shell $(find-makefile-common))
ifeq ($(MAKEFILE_COMMON),)
# attempt a checkout
define checkout-makefile-common
test -f CVS/Root && { cvs -Q -d $$(cat CVS/Root) checkout common && echo "common/Makefile.common" ; } || { echo "ERROR: I can't figure out how to checkout the 'common' module." ; exit -1 ; } >&2
endef
MAKEFILE_COMMON := $(shell $(checkout-makefile-common))
endif
include $(MAKEFILE_COMMON)
+1
View File
@@ -0,0 +1 @@
F-10
+650 -2787
View File
File diff suppressed because it is too large Load Diff
+1 -1
View File
@@ -1 +1 @@
SHA512 (libvirt-10.6.0.tar.xz) = edec79e89669d5e9a46be35e0d6334a6ed3bbf32426679549bd998bde24cba52b0378843f41a3abb5d781ad53e2a6a54619a0bad3f168c11fb41736cc6af6568
9242e0be2957f3fd001fbb07cb4bbca5 libvirt-0.5.0.tar.gz