Fix potential dataloss on snapshot deletion

Signed-off-by: Cole Robinson <crobinso@redhat.com>

0001-virDomainDiskTranslateSourcePool-Check-for-disk-type.patch

@@ -1,36 +0,0 @@
-From: Michal Privoznik <mprivozn@redhat.com>
-Date: Mon, 9 Mar 2020 16:40:57 +0100
-Subject: [PATCH] virDomainDiskTranslateSourcePool: Check for disk type
- correctly
-
-When rewriting the virDomainDiskTranslateSourcePool() function in
-v6.1.0-rc1~184 a typo was introduced. Previously, we allowed
-startup policy only for those volumes which translated to
-VIR_STORAGE_TYPE_FILE. But starting with the referenced commit,
-the value we checked for was changed to VIR_STORAGE_VOL_FILE
-which comes from a different enum and has a different value too.
-This is wrong, because virStorageSourceGetActualType() returns a
-value from the original enum.
-
-Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1811728
-
-Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
-Reviewed-by: Peter Krempa <pkrempa@redhat.com>
-(cherry picked from commit 3918dbd84e4951b43f93fbf50ef52be00274850c)
----
- src/conf/domain_conf.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
-index 17867eeece..fd2e8f4eb5 100644
---- a/src/conf/domain_conf.c
-+++ b/src/conf/domain_conf.c
-@@ -31746,7 +31746,7 @@ virDomainDiskTranslateSourcePool(virDomainDiskDefPtr def)
-     }
- 
-     if (def->startupPolicy != 0 &&
--        virStorageSourceGetActualType(def->src) != VIR_STORAGE_VOL_FILE) {
-+        virStorageSourceGetActualType(def->src) != VIR_STORAGE_TYPE_FILE) {
-         virReportError(VIR_ERR_XML_ERROR, "%s",
-                        _("'startupPolicy' is only valid for "
-                          "'file' type volume"));

0001-virarptable-Properly-calculate-rtattr-length.patch

@@ -0,0 +1,29 @@
+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)

0002-network-make-it-safe-to-call-networkSetupPrivateChai.patch

@@ -1,55 +0,0 @@
-From: Laine Stump <laine@redhat.com>
-Date: Thu, 7 May 2020 22:32:59 -0400
-Subject: [PATCH] network: make it safe to call networkSetupPrivateChains()
- multiple times
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-networkSetupPrivateChains() is currently called only once per run of
-libvirtd, so it can assume that errInitV4 and errInitV6 are empty/null
-when it is called. In preparation for potentially calling this
-function multiple times during one run, this patch moves the reset of
-errInitV[46] to the top of the function, to assure no memory is
-leaked.
-
-Signed-off-by: Laine Stump <laine@redhat.com>
-Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
-(cherry picked from commit de110f110fb917a31b9f33ad8e4b3c1d3284766a)
----
- src/network/bridge_driver_linux.c | 8 ++++----
- 1 file changed, 4 insertions(+), 4 deletions(-)
-
-diff --git a/src/network/bridge_driver_linux.c b/src/network/bridge_driver_linux.c
-index 7bbde5c6a9..80bd2409e1 100644
---- a/src/network/bridge_driver_linux.c
-+++ b/src/network/bridge_driver_linux.c
-@@ -48,6 +48,10 @@ static void networkSetupPrivateChains(void)
-     VIR_DEBUG("Setting up global firewall chains");
- 
-     createdChains = false;
-+    virFreeError(errInitV4);
-+    errInitV4 = NULL;
-+    virFreeError(errInitV6);
-+    errInitV6 = NULL;
- 
-     rc = iptablesSetupPrivateChains(VIR_FIREWALL_LAYER_IPV4);
-     if (rc < 0) {
-@@ -56,8 +60,6 @@ static void networkSetupPrivateChains(void)
-         errInitV4 = virSaveLastError();
-         virResetLastError();
-     } else {
--        virFreeError(errInitV4);
--        errInitV4 = NULL;
-         if (rc) {
-             VIR_DEBUG("Created global IPv4 chains");
-             createdChains = true;
-@@ -73,8 +75,6 @@ static void networkSetupPrivateChains(void)
-         errInitV6 = virSaveLastError();
-         virResetLastError();
-     } else {
--        virFreeError(errInitV6);
--        errInitV6 = NULL;
-         if (rc) {
-             VIR_DEBUG("Created global IPv6 chains");
-             createdChains = true;

0002-virarptable-Fix-check-for-message-length.patch

@@ -0,0 +1,34 @@
+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;

0003-network-force-re-creation-of-iptables-private-chains.patch

@@ -1,265 +0,0 @@
-From: Laine Stump <laine@redhat.com>
-Date: Thu, 7 May 2020 21:54:39 -0400
-Subject: [PATCH] network: force re-creation of iptables private chains on
- firewalld restart
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-When firewalld is stopped, it removes *all* iptables rules and chains,
-including those added by libvirt. Since restarting firewalld means
-stopping and then starting it, any time it is restarted, libvirt needs
-to recreate all the private iptables chains it uses, along with all
-the rules it adds.
-
-We already have code in place to call networkReloadFirewallRules() any
-time we're notified of a firewalld start, and
-networkReloadFirewallRules() will call
-networkPreReloadFirewallRules(), which calls
-networkSetupPrivateChains(); unfortunately that last call is called
-using virOnce(), meaning that it will only be called the first time
-through networkPreReloadFirewallRules() after libvirtd starts - so of
-course when firewalld is later restarted, the call to
-networkSetupPrivateChains() is skipped.
-
-The neat and tidy way to fix this would be if there was a standard way
-to reset a pthread_once_t object so that the next time virOnce was
-called, it would think the function hadn't been called, and call it
-again. Unfortunately, there isn't any official way of doing that (we
-*could* just fill it with 0 and hope for the best, but that doesn't
-seem very safe.
-
-So instead, this patch just adds a static variable called
-chainInitDone, which is set to true after networkSetupPrivateChains()
-is called for the first time, and then during calls to
-networkPreReloadFirewallRules(), if chainInitDone is set, we call
-networkSetupPrivateChains() directly instead of via virOnce().
-
-It may seem unsafe to directly call a function that is meant to be
-called only once, but I think in this case we're safe - there's
-nothing in the function that is inherently "once only" - it doesn't
-initialize anything that can't safely be re-initialized (as long as
-two threads don't try to do it at the same time), and it only happens
-when responding to a dbus message that firewalld has been started (and
-I don't think it's possible for us to be processing two of those at
-once), and even then only if the initial call to the function has
-already been completed (so we're safe if we receive a firewalld
-restart call at a time when we haven't yet called it, or even if
-another thread is already in the process of executing it. The only
-problematic bit I can think of is if another thread is in the process
-of adding an iptable rule at the time we're executing this function,
-but 1) none of those threads will be trying to add chains, and 2) if
-there was a concurrency problem with other threads adding iptables
-rules while firewalld was being restarted, it would still be a problem
-even without this change.
-
-This is yet another patch that fixes an occurrence of this error:
-
-COMMAND_FAILED: '/usr/sbin/iptables -w10 -w --table filter --insert LIBVIRT_INP --in-interface virbr0 --protocol tcp --destination-port 67 --jump ACCEPT' failed: iptables: No chain/target/match by that name.
-
-In particular, this resolves: https://bugzilla.redhat.com/1813830
-
-Signed-off-by: Laine Stump <laine@redhat.com>
-Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
-(cherry picked from commit f5418b427e7d2f26803880309478de9103680826)
----
- src/network/bridge_driver.c          | 16 ++++---
- src/network/bridge_driver_linux.c    | 69 ++++++++++++++++++----------
- src/network/bridge_driver_nop.c      |  3 +-
- src/network/bridge_driver_platform.h |  2 +-
- 4 files changed, 58 insertions(+), 32 deletions(-)
-
-diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
-index 369e80a889..aaf14defe4 100644
---- a/src/network/bridge_driver.c
-+++ b/src/network/bridge_driver.c
-@@ -273,7 +273,9 @@ static int
- networkShutdownNetworkExternal(virNetworkObjPtr obj);
- 
- static void
--networkReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup);
-+networkReloadFirewallRules(virNetworkDriverStatePtr driver,
-+                           bool startup,
-+                           bool force);
- 
- static void
- networkRefreshDaemons(virNetworkDriverStatePtr driver);
-@@ -689,7 +691,7 @@ firewalld_dbus_filter_bridge(DBusConnection *connection G_GNUC_UNUSED,
- 
-     if (reload) {
-         VIR_DEBUG("Reload in bridge_driver because of firewalld.");
--        networkReloadFirewallRules(driver, false);
-+        networkReloadFirewallRules(driver, false, true);
-     }
- 
-     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-@@ -798,7 +800,7 @@ networkStateInitialize(bool privileged,
-     virNetworkObjListPrune(network_driver->networks,
-                            VIR_CONNECT_LIST_NETWORKS_INACTIVE |
-                            VIR_CONNECT_LIST_NETWORKS_TRANSIENT);
--    networkReloadFirewallRules(network_driver, true);
-+    networkReloadFirewallRules(network_driver, true, false);
-     networkRefreshDaemons(network_driver);
- 
-     if (virDriverShouldAutostart(network_driver->stateDir, &autostart) < 0)
-@@ -868,7 +870,7 @@ networkStateReload(void)
-                                 network_driver->networkConfigDir,
-                                 network_driver->networkAutostartDir,
-                                 network_driver->xmlopt);
--    networkReloadFirewallRules(network_driver, false);
-+    networkReloadFirewallRules(network_driver, false, false);
-     networkRefreshDaemons(network_driver);
-     virNetworkObjListForEach(network_driver->networks,
-                              networkAutostartConfig,
-@@ -2236,14 +2238,16 @@ networkReloadFirewallRulesHelper(virNetworkObjPtr obj,
- 
- 
- static void
--networkReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup)
-+networkReloadFirewallRules(virNetworkDriverStatePtr driver,
-+                           bool startup,
-+                           bool force)
- {
-     VIR_INFO("Reloading iptables rules");
-     /* Ideally we'd not even register the driver when unprivilegd
-      * but until we untangle the virt driver that's not viable */
-     if (!driver->privileged)
-         return;
--    networkPreReloadFirewallRules(driver, startup);
-+    networkPreReloadFirewallRules(driver, startup, force);
-     virNetworkObjListForEach(driver->networks,
-                              networkReloadFirewallRulesHelper,
-                              NULL);
-diff --git a/src/network/bridge_driver_linux.c b/src/network/bridge_driver_linux.c
-index 80bd2409e1..b0bd207250 100644
---- a/src/network/bridge_driver_linux.c
-+++ b/src/network/bridge_driver_linux.c
-@@ -36,11 +36,14 @@ VIR_LOG_INIT("network.bridge_driver_linux");
- #define PROC_NET_ROUTE "/proc/net/route"
- 
- static virOnceControl createdOnce;
--static bool createdChains;
-+static bool chainInitDone; /* true iff networkSetupPrivateChains was ever called */
-+static bool createdChains; /* true iff networkSetupPrivateChains created chains during most recent call */
- static virErrorPtr errInitV4;
- static virErrorPtr errInitV6;
- 
--/* Only call via virOnce */
-+/* Usually only called via virOnce, but can also be called directly in
-+ * response to firewalld reload (if chainInitDone == true)
-+ */
- static void networkSetupPrivateChains(void)
- {
-     int rc;
-@@ -82,6 +85,8 @@ static void networkSetupPrivateChains(void)
-             VIR_DEBUG("Global IPv6 chains already exist");
-         }
-     }
-+
-+    chainInitDone = true;
- }
- 
- 
-@@ -111,7 +116,10 @@ networkHasRunningNetworks(virNetworkDriverStatePtr driver)
- }
- 
- 
--void networkPreReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup)
-+void
-+networkPreReloadFirewallRules(virNetworkDriverStatePtr driver,
-+                              bool startup,
-+                              bool force)
- {
-     /*
-      * If there are any running networks, we need to
-@@ -130,29 +138,42 @@ void networkPreReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup
-      * of starting the network though as that makes them
-      * more likely to be seen by a human
-      */
--    if (!networkHasRunningNetworks(driver)) {
--        VIR_DEBUG("Delayed global rule setup as no networks are running");
--        return;
--    }
-+    if (chainInitDone && force) {
-+        /* The Private chains have already been initialized once
-+         * during this run of libvirtd, so 1) we can't do it again via
-+         * virOnce(), and 2) we need to re-add the private chains even
-+         * if there are currently no running networks, because the
-+         * next time a network is started, libvirt will expect that
-+         * the chains have already been added. So we call directly
-+         * instead of via virOnce().
-+         */
-+        networkSetupPrivateChains();
- 
--    ignore_value(virOnce(&createdOnce, networkSetupPrivateChains));
-+    } else {
-+        if (!networkHasRunningNetworks(driver)) {
-+            VIR_DEBUG("Delayed global rule setup as no networks are running");
-+            return;
-+        }
- 
--    /*
--     * If this is initial startup, and we just created the
--     * top level private chains we either
--     *
--     *   - upgraded from old libvirt
--     *   - freshly booted from clean state
--     *
--     * In the first case we must delete the old rules from
--     * the built-in chains, instead of our new private chains.
--     * In the second case it doesn't matter, since no existing
--     * rules will be present. Thus we can safely just tell it
--     * to always delete from the builin chain
--     */
--    if (startup && createdChains) {
--        VIR_DEBUG("Requesting cleanup of legacy firewall rules");
--        iptablesSetDeletePrivate(false);
-+        ignore_value(virOnce(&createdOnce, networkSetupPrivateChains));
-+
-+        /*
-+         * If this is initial startup, and we just created the
-+         * top level private chains we either
-+         *
-+         *   - upgraded from old libvirt
-+         *   - freshly booted from clean state
-+         *
-+         * In the first case we must delete the old rules from
-+         * the built-in chains, instead of our new private chains.
-+         * In the second case it doesn't matter, since no existing
-+         * rules will be present. Thus we can safely just tell it
-+         * to always delete from the builin chain
-+         */
-+        if (startup && createdChains) {
-+            VIR_DEBUG("Requesting cleanup of legacy firewall rules");
-+            iptablesSetDeletePrivate(false);
-+        }
-     }
- }
- 
-diff --git a/src/network/bridge_driver_nop.c b/src/network/bridge_driver_nop.c
-index 08d737511f..db89c10023 100644
---- a/src/network/bridge_driver_nop.c
-+++ b/src/network/bridge_driver_nop.c
-@@ -20,7 +20,8 @@
- #include <config.h>
- 
- void networkPreReloadFirewallRules(virNetworkDriverStatePtr driver G_GNUC_UNUSED,
--                                   bool startup G_GNUC_UNUSED)
-+                                   bool startup G_GNUC_UNUSED,
-+                                   bool force G_GNUC_UNUSED)
- {
- }
- 
-diff --git a/src/network/bridge_driver_platform.h b/src/network/bridge_driver_platform.h
-index 169417a6c0..48ab52c160 100644
---- a/src/network/bridge_driver_platform.h
-+++ b/src/network/bridge_driver_platform.h
-@@ -62,7 +62,7 @@ struct _virNetworkDriverState {
- typedef struct _virNetworkDriverState virNetworkDriverState;
- typedef virNetworkDriverState *virNetworkDriverStatePtr;
- 
--void networkPreReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup);
-+void networkPreReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup, bool force);
- void networkPostReloadFirewallRules(bool startup);
- 
- int networkCheckRouteCollision(virNetworkDefPtr def);

0003-virarptable-End-parsing-earlier-in-case-of-NLMSG_DON.patch

@@ -0,0 +1,46 @@
+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

0004-systemd-start-libvirtd-after-firewalld-iptables-serv.patch

@@ -1,100 +0,0 @@
-From: Laine Stump <laine@redhat.com>
-Date: Fri, 1 May 2020 00:05:50 -0400
-Subject: [PATCH] systemd: start libvirtd after firewalld/iptables services
-
-When a system has enabled the iptables/ip6tables services rather than
-firewalld, there is no explicit ordering of the start of those
-services vs. libvirtd. This creates a problem when libvirtd.service is
-started before ip[6]tables, as the latter, when it finally is started,
-will remove all of the iptables rules that had previously been added
-by libvirt, including the custom chains where libvirt's rules are
-kept. This results in an error message similar to the following when a
-user subsequently tries to start a new libvirt network:
-
- "Error while activating network: Call to virNetworkCreate failed:
- internal error: Failed to apply firewall rules
- /usr/sbin/ip6tables -w --table filter --insert LIBVIRT_FWO \
-   --in-interface virbr2 --jump REJECT:
- ip6tables: No chain/target/match by that name."
-
-(Prior to logging this error, it also would have caused failure to
-forward (or block) traffic in some cases, e.g. for guests on a NATed
-network, since libvirt's rules to forward/block had all been deleted
-and libvirt didn't know about it, so it couldn't fix the problem)
-
-When this happens, the problem can be remedied by simply restarting
-libvirtd.service (which has the side-effect of reloading all
-libvirt-generated firewall rules)
-
-Instead, we can just explicitly stating in the libvirtd.service file
-that libvirtd.service should start after ip6tables.service and
-ip6tables.service, eliminating the race condition that leads to the
-error.
-
-There is also nothing (that I can see) in the systemd .service files
-to guarantee that firewalld.service will be started (if enabled) prior
-to libvirtd.service. The same error scenario given above would occur
-if libvirtd.service started before firewalld.service.  Even before
-that, though libvirtd would have detected that firewalld.service was
-disabled, and then turn off all firewalld support. So, for example,
-firewalld's libvirt zone wouldn't be used, and most likely traffic
-from guests would therefore be blocked (all with no external
-indication of the source of the problem other than a debug-level log
-when libvirtd was started saying that firewalld wasn't in use); also
-libvirtd wouldn't notice when firewalld reloaded its rules (which also
-simultaneously deletes all of libvirt's rules).
-
-I'm not aware of any reports that have been traced back to
-libvirtd.service starting before firewalld.service, but have seen that
-error reported multiple times, and also don't see an existing
-dependency that would guarantee firewalld.service starts before
-libvirtd.service, so it's possible it's been happening and we just
-haven't gotten to the bottom of it.
-
-This patch adds an After= line to the libvirtd.service file for each
-of iptables.service, ip6tables.service, and firewalld.servicee, which
-should guarantee that libvirtd.service isn't started until systemd has
-started whichever of the others is enabled.
-
-This race was diagnosed, and patch proposed, by Jason Montleon in
-https://bugzilla.redhat.com/1723698 . At the time (April 2019) danpb
-agreed with him that this change to libvirtd.service was a reasonable
-thing to do, but I guess everyone thought someone else was going to
-post a patch, so in the end nobody did.
-
-Signed-off-by: Laine Stump <laine@redhat.com>
-Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
-(cherry picked from commit 0756415f147dda15a417bd79eef9a62027d176e6)
----
- src/network/virtnetworkd.service.in | 3 +++
- src/remote/libvirtd.service.in      | 3 +++
- 2 files changed, 6 insertions(+)
-
-diff --git a/src/network/virtnetworkd.service.in b/src/network/virtnetworkd.service.in
-index 656e8b4f84..56182e1693 100644
---- a/src/network/virtnetworkd.service.in
-+++ b/src/network/virtnetworkd.service.in
-@@ -5,6 +5,9 @@ Requires=virtnetworkd.socket
- Requires=virtnetworkd-ro.socket
- Requires=virtnetworkd-admin.socket
- After=network.target
-+After=firewalld.service
-+After=iptables.service
-+After=ip6tables.service
- After=dbus.service
- After=apparmor.service
- After=local-fs.target
-diff --git a/src/remote/libvirtd.service.in b/src/remote/libvirtd.service.in
-index 90b2cad5b0..cc0d4e3693 100644
---- a/src/remote/libvirtd.service.in
-+++ b/src/remote/libvirtd.service.in
-@@ -11,6 +11,9 @@ Wants=libvirtd-admin.socket
- Wants=systemd-machined.service
- Before=libvirt-guests.service
- After=network.target
-+After=firewalld.service
-+After=iptables.service
-+After=ip6tables.service
- After=dbus.service
- After=iscsid.service
- After=apparmor.service

0004-util-use-a-single-flags-arg-for-virNetDevBandwidthSe.patch

@@ -0,0 +1,315 @@
+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
+

0005-libxl-fix-crash-when-initializing-driver.patch

@@ -1,43 +0,0 @@
-From: Jim Fehlig <jfehlig@suse.com>
-Date: Fri, 3 Apr 2020 15:51:48 -0600
-Subject: [PATCH] libxl: fix crash when initializing driver
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Commit 54a401af478 split out DriverConfigInit from DriverConfigNew, but
-then called it a bit late from libxlStateInitialize. The cfg is used in
-libxlDriverConfigLoadFile and when uninitialized results in a crash.
-Calling DriverConfigInit immediately after DriverConfigNew fixes the
-crash.
-
-Signed-off-by: Jim Fehlig <jfehlig@suse.com>
-Reviewed-by: Erik Skultety <eskultet@redhat.com>
-Reviewed-by: Ján Tomko <jtomko@redhat.com>
-(cherry picked from commit 88011ed280c4f946a7b8e7ffcea2335eb075de60)
----
- src/libxl/libxl_driver.c | 6 +++---
- 1 file changed, 3 insertions(+), 3 deletions(-)
-
-diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
-index f2387e2a20..c4fb791fa0 100644
---- a/src/libxl/libxl_driver.c
-+++ b/src/libxl/libxl_driver.c
-@@ -703,14 +703,14 @@ libxlStateInitialize(bool privileged,
-     if (!(cfg = libxlDriverConfigNew()))
-         goto error;
- 
-+    if (libxlDriverConfigInit(cfg) < 0)
-+        goto error;
-+
-     driverConf = g_strdup_printf("%s/libxl.conf", cfg->configBaseDir);
- 
-     if (libxlDriverConfigLoadFile(cfg, driverConf) < 0)
-         goto error;
- 
--    if (libxlDriverConfigInit(cfg) < 0)
--        goto error;
--
-     /* Register the callbacks providing access to libvirt's event loop */
-     libxl_osevent_register_hooks(cfg->ctx, &libxl_osevent_callbacks, cfg->ctx);
- 

0005-util-make-it-optional-to-clear-existing-tc-qdiscs-fi.patch

@@ -0,0 +1,185 @@
+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
+

0006-util-put-the-command-that-adds-a-tx-filter-qdisc-int.patch

@@ -0,0 +1,98 @@
+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
+

0007-util-don-t-re-add-the-qdisc-used-for-tx-filters-if-i.patch

@@ -0,0 +1,107 @@
+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
+

0008-util-add-new-tc-layer-for-virFirewallCmd-objects.patch

@@ -0,0 +1,171 @@
+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
+

0009-network-add-tc-filter-rule-to-nftables-backend-to-fi.patch

@@ -0,0 +1,687 @@
+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
+

0010-network-permit-forward-mode-open-when-a-network-has-.patch

@@ -0,0 +1,51 @@
+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
+

0011-qemu-snapshot-delete-disk-image-only-if-parent-snaps.patch

@@ -0,0 +1,64 @@
+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);
++                }
+             }
+         }
+     }

sources

@@ -1 +1 @@
-SHA512 (libvirt-6.1.0.tar.xz) = 17a2641f300a4a05149261bae74ac856e9a2511a259146595d2e2412c4a0601d88369b0544ba86edc80e433a47cf828317d8de38c6ec86a1b3efaca75294a606
+SHA512 (libvirt-10.6.0.tar.xz) = edec79e89669d5e9a46be35e0d6334a6ed3bbf32426679549bd998bde24cba52b0378843f41a3abb5d781ad53e2a6a54619a0bad3f168c11fb41736cc6af6568