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Convert nwfilter ebtablesRemoveBasicRules to virFirewall
Convert the nwfilter ebtablesRemoveBasicRules method to use the virFirewall object APIs instead of creating shell scripts using virBuffer APIs. This provides a performance improvement through allowing direct use of firewalld dbus APIs and will facilitate automated testing. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
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3010fae592
commit
d7b83ab7c3
@ -206,7 +206,7 @@ static const char *m_physdev_out_old_str = "-m physdev --physdev-out";
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static int ebtablesRemoveBasicRules(const char *ifname);
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static int ebtablesRemoveBasicRules(const char *ifname);
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static int ebiptablesDriverInit(bool privileged);
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static int ebiptablesDriverInit(bool privileged);
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static void ebiptablesDriverShutdown(void);
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static void ebiptablesDriverShutdown(void);
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static void ebtablesCleanAll(const char *ifname);
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static int ebtablesCleanAll(const char *ifname);
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static int ebiptablesAllTeardown(const char *ifname);
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static int ebiptablesAllTeardown(const char *ifname);
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static virMutex execCLIMutex = VIR_MUTEX_INITIALIZER;
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static virMutex execCLIMutex = VIR_MUTEX_INITIALIZER;
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@ -253,6 +253,12 @@ static char chainprefixes_host[3] = {
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0
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0
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};
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};
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static char chainprefixes_host_temp[3] = {
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CHAINPREFIX_HOST_IN_TEMP,
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CHAINPREFIX_HOST_OUT_TEMP,
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0
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};
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static int
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static int
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printVar(virNWFilterVarCombIterPtr vars,
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printVar(virNWFilterVarCombIterPtr vars,
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char *buf, int bufsize,
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char *buf, int bufsize,
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@ -2916,14 +2922,6 @@ _ebtablesRemoveRootChainFW(virFirewallPtr fw,
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}
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}
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static void
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ebtablesRemoveRootChain(virBufferPtr buf,
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bool incoming, const char *ifname)
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{
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_ebtablesRemoveRootChain(buf, incoming, ifname, false);
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}
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static void
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static void
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ebtablesRemoveRootChainFW(virFirewallPtr fw,
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ebtablesRemoveRootChainFW(virFirewallPtr fw,
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bool incoming, const char *ifname)
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bool incoming, const char *ifname)
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@ -2940,6 +2938,14 @@ ebtablesRemoveTmpRootChain(virBufferPtr buf,
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}
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}
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static void
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ebtablesRemoveTmpRootChainFW(virFirewallPtr fw,
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bool incoming, const char *ifname)
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{
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_ebtablesRemoveRootChainFW(fw, incoming, ifname, 1);
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}
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static void
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static void
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_ebtablesUnlinkRootChain(virBufferPtr buf,
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_ebtablesUnlinkRootChain(virBufferPtr buf,
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bool incoming, const char *ifname,
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bool incoming, const char *ifname,
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@ -2994,14 +3000,6 @@ _ebtablesUnlinkRootChainFW(virFirewallPtr fw,
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}
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}
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static void
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ebtablesUnlinkRootChain(virBufferPtr buf,
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bool incoming, const char *ifname)
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{
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_ebtablesUnlinkRootChain(buf, incoming, ifname, false);
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}
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static void
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static void
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ebtablesUnlinkRootChainFW(virFirewallPtr fw,
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ebtablesUnlinkRootChainFW(virFirewallPtr fw,
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bool incoming, const char *ifname)
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bool incoming, const char *ifname)
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@ -3018,6 +3016,14 @@ ebtablesUnlinkTmpRootChain(virBufferPtr buf,
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}
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}
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static void
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ebtablesUnlinkTmpRootChainFW(virFirewallPtr fw,
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int incoming, const char *ifname)
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{
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_ebtablesUnlinkRootChainFW(fw, incoming, ifname, 1);
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}
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static int
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static int
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ebtablesCreateTmpSubChain(ebiptablesRuleInstPtr *inst,
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ebtablesCreateTmpSubChain(ebiptablesRuleInstPtr *inst,
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int *nRuleInstances,
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int *nRuleInstances,
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@ -3184,19 +3190,6 @@ _ebtablesRemoveSubChainsFW(virFirewallPtr fw,
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}
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}
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}
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}
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static void
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ebtablesRemoveSubChains(virBufferPtr buf,
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const char *ifname)
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{
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char chains[3] = {
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CHAINPREFIX_HOST_IN,
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CHAINPREFIX_HOST_OUT,
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0
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};
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_ebtablesRemoveSubChains(buf, ifname, chains);
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}
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static void
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static void
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ebtablesRemoveSubChainsFW(virFirewallPtr fw,
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ebtablesRemoveSubChainsFW(virFirewallPtr fw,
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const char *ifname)
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const char *ifname)
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@ -3217,6 +3210,13 @@ ebtablesRemoveTmpSubChains(virBufferPtr buf,
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_ebtablesRemoveSubChains(buf, ifname, chains);
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_ebtablesRemoveSubChains(buf, ifname, chains);
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}
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}
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static void
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ebtablesRemoveTmpSubChainsFW(virFirewallPtr fw,
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const char *ifname)
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{
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_ebtablesRemoveSubChainsFW(fw, ifname, chainprefixes_host_temp);
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}
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static void
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static void
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ebtablesRenameTmpSubChain(virBufferPtr buf,
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ebtablesRenameTmpSubChain(virBufferPtr buf,
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bool incoming,
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bool incoming,
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@ -3683,34 +3683,35 @@ ebtablesApplyDropAllRules(const char *ifname)
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static int
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static int
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ebtablesRemoveBasicRules(const char *ifname)
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ebtablesRemoveBasicRules(const char *ifname)
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{
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{
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ebtablesCleanAll(ifname);
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return ebtablesCleanAll(ifname);
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return 0;
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}
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}
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static void
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static int
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ebtablesCleanAll(const char *ifname)
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ebtablesCleanAll(const char *ifname)
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{
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{
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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virFirewallPtr fw = virFirewallNew();
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int ret = -1;
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if (!ebtables_cmd_path)
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virFirewallStartTransaction(fw, VIR_FIREWALL_TRANSACTION_IGNORE_ERRORS);
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return;
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NWFILTER_SET_EBTABLES_SHELLVAR(&buf);
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ebtablesUnlinkRootChainFW(fw, true, ifname);
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ebtablesUnlinkRootChainFW(fw, false, ifname);
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ebtablesRemoveSubChainsFW(fw, ifname);
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ebtablesRemoveRootChainFW(fw, true, ifname);
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ebtablesRemoveRootChainFW(fw, false, ifname);
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ebtablesUnlinkRootChain(&buf, true, ifname);
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ebtablesUnlinkTmpRootChainFW(fw, true, ifname);
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ebtablesUnlinkRootChain(&buf, false, ifname);
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ebtablesUnlinkTmpRootChainFW(fw, false, ifname);
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ebtablesRemoveSubChains(&buf, ifname);
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ebtablesRemoveTmpSubChainsFW(fw, ifname);
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ebtablesRemoveRootChain(&buf, true, ifname);
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ebtablesRemoveTmpRootChainFW(fw, true, ifname);
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ebtablesRemoveRootChain(&buf, false, ifname);
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ebtablesRemoveTmpRootChainFW(fw, false, ifname);
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ebtablesUnlinkTmpRootChain(&buf, true, ifname);
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virMutexLock(&execCLIMutex);
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ebtablesUnlinkTmpRootChain(&buf, false, ifname);
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ret = virFirewallApply(fw);
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ebtablesRemoveTmpSubChains(&buf, ifname);
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virMutexUnlock(&execCLIMutex);
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ebtablesRemoveTmpRootChain(&buf, true, ifname);
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virFirewallFree(fw);
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ebtablesRemoveTmpRootChain(&buf, false, ifname);
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return ret;
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ebiptablesExecCLI(&buf, true, NULL);
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}
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}
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@ -167,6 +167,55 @@ testNWFilterEBIPTablesTearOldRules(const void *opaque ATTRIBUTE_UNUSED)
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}
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}
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static int
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testNWFilterEBIPTablesRemoveBasicRules(const void *opaque ATTRIBUTE_UNUSED)
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{
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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const char *expected =
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"ebtables -t nat -D PREROUTING -i vnet0 -j libvirt-I-vnet0\n"
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"ebtables -t nat -D POSTROUTING -o vnet0 -j libvirt-O-vnet0\n"
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"ebtables -t nat -L libvirt-I-vnet0\n"
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"ebtables -t nat -L libvirt-O-vnet0\n"
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"ebtables -t nat -F libvirt-I-vnet0\n"
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"ebtables -t nat -X libvirt-I-vnet0\n"
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"ebtables -t nat -F libvirt-O-vnet0\n"
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"ebtables -t nat -X libvirt-O-vnet0\n"
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"ebtables -t nat -D PREROUTING -i vnet0 -j libvirt-J-vnet0\n"
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"ebtables -t nat -D POSTROUTING -o vnet0 -j libvirt-P-vnet0\n"
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"ebtables -t nat -L libvirt-J-vnet0\n"
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"ebtables -t nat -L libvirt-P-vnet0\n"
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"ebtables -t nat -F libvirt-J-vnet0\n"
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"ebtables -t nat -X libvirt-J-vnet0\n"
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"ebtables -t nat -F libvirt-P-vnet0\n"
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"ebtables -t nat -X libvirt-P-vnet0\n";
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char *actual = NULL;
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int ret = -1;
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virCommandSetDryRun(&buf, NULL, NULL);
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if (ebiptables_driver.removeBasicRules("vnet0") < 0)
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goto cleanup;
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if (virBufferError(&buf))
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goto cleanup;
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actual = virBufferContentAndReset(&buf);
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virtTestClearCommandPath(actual);
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if (STRNEQ_NULLABLE(actual, expected)) {
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virtTestDifference(stderr, actual, expected);
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goto cleanup;
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}
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ret = 0;
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cleanup:
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virCommandSetDryRun(NULL, NULL, NULL);
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virBufferFreeAndReset(&buf);
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VIR_FREE(actual);
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return ret;
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}
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static int
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static int
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mymain(void)
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mymain(void)
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{
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{
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@ -187,6 +236,11 @@ mymain(void)
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NULL) < 0)
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NULL) < 0)
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ret = -1;
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ret = -1;
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if (virtTestRun("ebiptablesRemoveBasicRules",
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testNWFilterEBIPTablesRemoveBasicRules,
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NULL) < 0)
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ret = -1;
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cleanup:
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cleanup:
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return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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}
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