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network: add platform driver callbacks around firewall reload

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Allow the platform driver impls to run logic before and after the
firewall reload process.

Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2018-12-05 13:29:07 +00:00
parent f04bdf5368
commit 0fc746aa54
4 changed files with 33 additions and 5 deletions
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13
src/network/bridge_driver.c
View File

@ -162,7 +162,7 @@ static int
networkShutdownNetworkExternal(virNetworkObjPtr obj);
static void
networkReloadFirewallRules(virNetworkDriverStatePtr driver);
networkReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup);
static void
networkRefreshDaemons(virNetworkDriverStatePtr driver);
@ -550,7 +550,7 @@ firewalld_dbus_filter_bridge(DBusConnection *connection ATTRIBUTE_UNUSED,
"Reloaded"))
{
VIR_DEBUG("Reload in bridge_driver because of firewalld.");
networkReloadFirewallRules(driver);
networkReloadFirewallRules(driver, false);
}
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
@ -657,7 +657,7 @@ networkStateInitialize(bool privileged,
virNetworkObjListPrune(network_driver->networks,
VIR_CONNECT_LIST_NETWORKS_INACTIVE |
VIR_CONNECT_LIST_NETWORKS_TRANSIENT);
networkReloadFirewallRules(network_driver);
networkReloadFirewallRules(network_driver, true);
networkRefreshDaemons(network_driver);
network_driver->networkEventState = virObjectEventStateNew();
@ -733,7 +733,7 @@ networkStateReload(void)
virNetworkObjLoadAllConfigs(network_driver->networks,
network_driver->networkConfigDir,
network_driver->networkAutostartDir);
networkReloadFirewallRules(network_driver);
networkReloadFirewallRules(network_driver, false);
networkRefreshDaemons(network_driver);
virNetworkObjListForEach(network_driver->networks,
networkAutostartConfig,
@ -2085,12 +2085,15 @@ networkReloadFirewallRulesHelper(virNetworkObjPtr obj,
static void
networkReloadFirewallRules(virNetworkDriverStatePtr driver)
networkReloadFirewallRules(virNetworkDriverStatePtr driver, bool startup)
{
VIR_INFO("Reloading iptables rules");
if (networkPreReloadFirewallRules(startup) < 0)
return;
virNetworkObjListForEach(driver->networks,
networkReloadFirewallRulesHelper,
NULL);
networkPostReloadFirewallRules(startup);
}

11
src/network/bridge_driver_linux.c
View File

@ -34,6 +34,17 @@ VIR_LOG_INIT("network.bridge_driver_linux");
#define PROC_NET_ROUTE "/proc/net/route"
int networkPreReloadFirewallRules(bool startup ATTRIBUTE_UNUSED)
{
return 0;
}
void networkPostReloadFirewallRules(bool startup ATTRIBUTE_UNUSED)
{
}
/* XXX: This function can be a lot more exhaustive, there are certainly
* other scenarios where we can ruin host network connectivity.
* XXX: Using a proper library is preferred over parsing /proc

11
src/network/bridge_driver_nop.c
View File

@ -19,6 +19,17 @@
#include <config.h>
int networkPreReloadFirewallRules(bool startup ATTRIBUTE_UNUSED)
{
return 0;
}
void networkPostReloadFirewallRules(bool startup ATTRIBUTE_UNUSED)
{
}
int networkCheckRouteCollision(virNetworkDefPtr def ATTRIBUTE_UNUSED)
{
return 0;

3
src/network/bridge_driver_platform.h
View File

@ -58,6 +58,9 @@ struct _virNetworkDriverState {
typedef struct _virNetworkDriverState virNetworkDriverState;
typedef virNetworkDriverState *virNetworkDriverStatePtr;
int networkPreReloadFirewallRules(bool startup);
void networkPostReloadFirewallRules(bool startup);
int networkCheckRouteCollision(virNetworkDefPtr def);
int networkAddFirewallRules(virNetworkDefPtr def);