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Convert nwfilter ebtablesRemoveBasicRules to virFirewall

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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:
Daniel P. Berrange 2014-03-14 12:14:13 +00:00
parent 3010fae592
commit d7b83ab7c3
2 changed files with 104 additions and 49 deletions
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99
src/nwfilter/nwfilter_ebiptables_driver.c
View File

@ -206,7 +206,7 @@ static const char *m_physdev_out_old_str = "-m physdev --physdev-out";
static int ebtablesRemoveBasicRules(const char *ifname); static int ebtablesRemoveBasicRules(const char *ifname);
static int ebiptablesDriverInit(bool privileged); static int ebiptablesDriverInit(bool privileged);
static void ebiptablesDriverShutdown(void); static void ebiptablesDriverShutdown(void);
static void ebtablesCleanAll(const char *ifname); static int ebtablesCleanAll(const char *ifname);
static int ebiptablesAllTeardown(const char *ifname); static int ebiptablesAllTeardown(const char *ifname);
static virMutex execCLIMutex = VIR_MUTEX_INITIALIZER; static virMutex execCLIMutex = VIR_MUTEX_INITIALIZER;
@ -253,6 +253,12 @@ static char chainprefixes_host[3] = {
0 0
}; };
static char chainprefixes_host_temp[3] = {
CHAINPREFIX_HOST_IN_TEMP,
CHAINPREFIX_HOST_OUT_TEMP,
0
};
static int static int
printVar(virNWFilterVarCombIterPtr vars, printVar(virNWFilterVarCombIterPtr vars,
char *buf, int bufsize, char *buf, int bufsize,
@ -2916,14 +2922,6 @@ _ebtablesRemoveRootChainFW(virFirewallPtr fw,
} }
static void
ebtablesRemoveRootChain(virBufferPtr buf,
bool incoming, const char *ifname)
{
_ebtablesRemoveRootChain(buf, incoming, ifname, false);
}
static void static void
ebtablesRemoveRootChainFW(virFirewallPtr fw, ebtablesRemoveRootChainFW(virFirewallPtr fw,
bool incoming, const char *ifname) bool incoming, const char *ifname)
@ -2940,6 +2938,14 @@ ebtablesRemoveTmpRootChain(virBufferPtr buf,
} }
static void
ebtablesRemoveTmpRootChainFW(virFirewallPtr fw,
bool incoming, const char *ifname)
{
_ebtablesRemoveRootChainFW(fw, incoming, ifname, 1);
}
static void static void
_ebtablesUnlinkRootChain(virBufferPtr buf, _ebtablesUnlinkRootChain(virBufferPtr buf,
bool incoming, const char *ifname, bool incoming, const char *ifname,
@ -2994,14 +3000,6 @@ _ebtablesUnlinkRootChainFW(virFirewallPtr fw,
} }
static void
ebtablesUnlinkRootChain(virBufferPtr buf,
bool incoming, const char *ifname)
{
_ebtablesUnlinkRootChain(buf, incoming, ifname, false);
}
static void static void
ebtablesUnlinkRootChainFW(virFirewallPtr fw, ebtablesUnlinkRootChainFW(virFirewallPtr fw,
bool incoming, const char *ifname) bool incoming, const char *ifname)
@ -3018,6 +3016,14 @@ ebtablesUnlinkTmpRootChain(virBufferPtr buf,
} }
static void
ebtablesUnlinkTmpRootChainFW(virFirewallPtr fw,
int incoming, const char *ifname)
{
_ebtablesUnlinkRootChainFW(fw, incoming, ifname, 1);
}
static int static int
ebtablesCreateTmpSubChain(ebiptablesRuleInstPtr *inst, ebtablesCreateTmpSubChain(ebiptablesRuleInstPtr *inst,
int *nRuleInstances, int *nRuleInstances,
@ -3184,19 +3190,6 @@ _ebtablesRemoveSubChainsFW(virFirewallPtr fw,
} }
} }
static void
ebtablesRemoveSubChains(virBufferPtr buf,
const char *ifname)
{
char chains[3] = {
CHAINPREFIX_HOST_IN,
CHAINPREFIX_HOST_OUT,
0
};
_ebtablesRemoveSubChains(buf, ifname, chains);
}
static void static void
ebtablesRemoveSubChainsFW(virFirewallPtr fw, ebtablesRemoveSubChainsFW(virFirewallPtr fw,
const char *ifname) const char *ifname)
@ -3217,6 +3210,13 @@ ebtablesRemoveTmpSubChains(virBufferPtr buf,
_ebtablesRemoveSubChains(buf, ifname, chains); _ebtablesRemoveSubChains(buf, ifname, chains);
} }
static void
ebtablesRemoveTmpSubChainsFW(virFirewallPtr fw,
const char *ifname)
{
_ebtablesRemoveSubChainsFW(fw, ifname, chainprefixes_host_temp);
}
static void static void
ebtablesRenameTmpSubChain(virBufferPtr buf, ebtablesRenameTmpSubChain(virBufferPtr buf,
bool incoming, bool incoming,
@ -3683,34 +3683,35 @@ ebtablesApplyDropAllRules(const char *ifname)
static int static int
ebtablesRemoveBasicRules(const char *ifname) ebtablesRemoveBasicRules(const char *ifname)
{ {
ebtablesCleanAll(ifname); return ebtablesCleanAll(ifname);
return 0;
} }
static void static int
ebtablesCleanAll(const char *ifname) ebtablesCleanAll(const char *ifname)
{ {
virBuffer buf = VIR_BUFFER_INITIALIZER; virFirewallPtr fw = virFirewallNew();
int ret = -1;
if (!ebtables_cmd_path) virFirewallStartTransaction(fw, VIR_FIREWALL_TRANSACTION_IGNORE_ERRORS);
return;
NWFILTER_SET_EBTABLES_SHELLVAR(&buf); ebtablesUnlinkRootChainFW(fw, true, ifname);
ebtablesUnlinkRootChainFW(fw, false, ifname);
ebtablesRemoveSubChainsFW(fw, ifname);
ebtablesRemoveRootChainFW(fw, true, ifname);
ebtablesRemoveRootChainFW(fw, false, ifname);
ebtablesUnlinkRootChain(&buf, true, ifname); ebtablesUnlinkTmpRootChainFW(fw, true, ifname);
ebtablesUnlinkRootChain(&buf, false, ifname); ebtablesUnlinkTmpRootChainFW(fw, false, ifname);
ebtablesRemoveSubChains(&buf, ifname); ebtablesRemoveTmpSubChainsFW(fw, ifname);
ebtablesRemoveRootChain(&buf, true, ifname); ebtablesRemoveTmpRootChainFW(fw, true, ifname);
ebtablesRemoveRootChain(&buf, false, ifname); ebtablesRemoveTmpRootChainFW(fw, false, ifname);
ebtablesUnlinkTmpRootChain(&buf, true, ifname); virMutexLock(&execCLIMutex);
ebtablesUnlinkTmpRootChain(&buf, false, ifname); ret = virFirewallApply(fw);
ebtablesRemoveTmpSubChains(&buf, ifname); virMutexUnlock(&execCLIMutex);
ebtablesRemoveTmpRootChain(&buf, true, ifname); virFirewallFree(fw);
ebtablesRemoveTmpRootChain(&buf, false, ifname); return ret;
ebiptablesExecCLI(&buf, true, NULL);
} }

54
tests/nwfilterebiptablestest.c
View File

@ -167,6 +167,55 @@ testNWFilterEBIPTablesTearOldRules(const void *opaque ATTRIBUTE_UNUSED)
} }
static int
testNWFilterEBIPTablesRemoveBasicRules(const void *opaque ATTRIBUTE_UNUSED)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
const char *expected =
"ebtables -t nat -D PREROUTING -i vnet0 -j libvirt-I-vnet0\n"
"ebtables -t nat -D POSTROUTING -o vnet0 -j libvirt-O-vnet0\n"
"ebtables -t nat -L libvirt-I-vnet0\n"
"ebtables -t nat -L libvirt-O-vnet0\n"
"ebtables -t nat -F libvirt-I-vnet0\n"
"ebtables -t nat -X libvirt-I-vnet0\n"
"ebtables -t nat -F libvirt-O-vnet0\n"
"ebtables -t nat -X libvirt-O-vnet0\n"
"ebtables -t nat -D PREROUTING -i vnet0 -j libvirt-J-vnet0\n"
"ebtables -t nat -D POSTROUTING -o vnet0 -j libvirt-P-vnet0\n"
"ebtables -t nat -L libvirt-J-vnet0\n"
"ebtables -t nat -L libvirt-P-vnet0\n"
"ebtables -t nat -F libvirt-J-vnet0\n"
"ebtables -t nat -X libvirt-J-vnet0\n"
"ebtables -t nat -F libvirt-P-vnet0\n"
"ebtables -t nat -X libvirt-P-vnet0\n";
char *actual = NULL;
int ret = -1;
virCommandSetDryRun(&buf, NULL, NULL);
if (ebiptables_driver.removeBasicRules("vnet0") < 0)
goto cleanup;
if (virBufferError(&buf))
goto cleanup;
actual = virBufferContentAndReset(&buf);
virtTestClearCommandPath(actual);
if (STRNEQ_NULLABLE(actual, expected)) {
virtTestDifference(stderr, actual, expected);
goto cleanup;
}
ret = 0;
cleanup:
virCommandSetDryRun(NULL, NULL, NULL);
virBufferFreeAndReset(&buf);
VIR_FREE(actual);
return ret;
}
static int static int
mymain(void) mymain(void)
{ {
@ -187,6 +236,11 @@ mymain(void)
NULL) < 0) NULL) < 0)
ret = -1; ret = -1;
if (virtTestRun("ebiptablesRemoveBasicRules",
testNWFilterEBIPTablesRemoveBasicRules,
NULL) < 0)
ret = -1;
cleanup: cleanup:
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE; return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
} }