7:51 p.m.
With hunks borrowed from one of David Steven's previous patches, we now
add the capability of having a 'mac' chain which is useful to filter
for multiple valid MAC addresses.
Signed-off-by: David L Stevens <dlstevens(a)us.ibm.com>
Signed-off-by: Stefan Berger <stefanb(a)linux.vnet.ibm.com>
---
docs/schemas/nwfilter.rng | 3 +++
src/conf/nwfilter_conf.c | 2 ++
src/conf/nwfilter_conf.h | 2 ++
src/nwfilter/nwfilter_ebiptables_driver.c | 22 ++++++++++++++++++++--
4 files changed, 27 insertions(+), 2 deletions(-)
Index: libvirt-acl/src/nwfilter/nwfilter_ebiptables_driver.c
===================================================================
--- libvirt-acl.orig/src/nwfilter/nwfilter_ebiptables_driver.c
+++ libvirt-acl/src/nwfilter/nwfilter_ebiptables_driver.c
@@ -188,6 +188,7 @@ enum l3_proto_idx {
L3_PROTO_IPV6_IDX,
L3_PROTO_ARP_IDX,
L3_PROTO_RARP_IDX,
+ L2_PROTO_MAC_IDX,
L2_PROTO_VLAN_IDX,
L3_PROTO_LAST_IDX
};
@@ -205,6 +206,7 @@ static const struct ushort_map l3_protoc
USHORTMAP_ENTRY_IDX(L3_PROTO_ARP_IDX , ETHERTYPE_ARP , "arp"),
USHORTMAP_ENTRY_IDX(L3_PROTO_RARP_IDX, ETHERTYPE_REVARP, "rarp"),
USHORTMAP_ENTRY_IDX(L2_PROTO_VLAN_IDX, ETHERTYPE_VLAN , "vlan"),
+ USHORTMAP_ENTRY_IDX(L2_PROTO_MAC_IDX, 0 , "mac"),
USHORTMAP_ENTRY_IDX(L3_PROTO_LAST_IDX, 0 , NULL),
};
@@ -2806,11 +2808,25 @@ ebtablesCreateTmpSubChain(ebiptablesRule
char rootchain[MAX_CHAINNAME_LENGTH], chain[MAX_CHAINNAME_LENGTH];
char chainPrefix = (incoming) ? CHAINPREFIX_HOST_IN_TEMP
: CHAINPREFIX_HOST_OUT_TEMP;
+ char *protostr = NULL;
PRINT_ROOT_CHAIN(rootchain, chainPrefix, ifname);
PRINT_CHAIN(chain, chainPrefix, ifname,
(filtername) ? filtername : l3_protocols[protoidx].val);
+ switch (protoidx) {
+ case L2_PROTO_MAC_IDX:
+ break;
+ default:
+ virAsprintf(&protostr, "-p 0x%04x", l3_protocols[protoidx].attr);
+ break;
+ }
+
+ if (!protostr) {
+ virReportOOMError();
+ return -1;
+ }
+
virBufferAsprintf(&buf,
CMD_DEF("%s -t %s -F %s") CMD_SEPARATOR
CMD_EXEC
@@ -2819,7 +2835,7 @@ ebtablesCreateTmpSubChain(ebiptablesRule
CMD_DEF("%s -t %s -N %s") CMD_SEPARATOR
CMD_EXEC
"%s"
- CMD_DEF("%s -t %s -%%c %s %%s -p 0x%x -j %s")
+ CMD_DEF("%s -t %s -%%c %s %%s %s -j %s")
CMD_SEPARATOR
CMD_EXEC
"%s",
@@ -2831,10 +2847,12 @@ ebtablesCreateTmpSubChain(ebiptablesRule
CMD_STOPONERR(stopOnError),
ebtables_cmd_path, EBTABLES_DEFAULT_TABLE,
- rootchain, l3_protocols[protoidx].attr, chain,
+ rootchain, protostr, chain,
CMD_STOPONERR(stopOnError));
+ VIR_FREE(protostr);
+
if (virBufferError(&buf) ||
VIR_EXPAND_N(tmp, count, 1) < 0) {
virReportOOMError();
Index: libvirt-acl/src/conf/nwfilter_conf.c
===================================================================
--- libvirt-acl.orig/src/conf/nwfilter_conf.c
+++ libvirt-acl/src/conf/nwfilter_conf.c
@@ -82,6 +82,7 @@ VIR_ENUM_IMPL(virNWFilterEbtablesTable,
VIR_ENUM_IMPL(virNWFilterChainSuffix, VIR_NWFILTER_CHAINSUFFIX_LAST,
"root",
+ "mac",
"vlan",
"arp",
"rarp",
@@ -128,6 +129,7 @@ struct int_map {
static const struct int_map chain_priorities[] = {
INTMAP_ENTRY(NWFILTER_ROOT_FILTER_PRI, "root"),
+ INTMAP_ENTRY(NWFILTER_MAC_FILTER_PRI, "mac"),
INTMAP_ENTRY(NWFILTER_VLAN_FILTER_PRI, "vlan"),
INTMAP_ENTRY(NWFILTER_IPV4_FILTER_PRI, "ipv4"),
INTMAP_ENTRY(NWFILTER_IPV6_FILTER_PRI, "ipv6"),
Index: libvirt-acl/src/conf/nwfilter_conf.h
===================================================================
--- libvirt-acl.orig/src/conf/nwfilter_conf.h
+++ libvirt-acl/src/conf/nwfilter_conf.h
@@ -378,6 +378,7 @@ enum virNWFilterEbtablesTableType {
# define NWFILTER_MAX_FILTER_PRIORITY MAX_RULE_PRIORITY
# define NWFILTER_ROOT_FILTER_PRI 0
+# define NWFILTER_MAC_FILTER_PRI -800
# define NWFILTER_VLAN_FILTER_PRI -750
# define NWFILTER_IPV4_FILTER_PRI -700
# define NWFILTER_IPV6_FILTER_PRI -600
@@ -456,6 +457,7 @@ struct _virNWFilterEntry {
enum virNWFilterChainSuffixType {
VIR_NWFILTER_CHAINSUFFIX_ROOT = 0,
+ VIR_NWFILTER_CHAINSUFFIX_MAC,
VIR_NWFILTER_CHAINSUFFIX_VLAN,
VIR_NWFILTER_CHAINSUFFIX_ARP,
VIR_NWFILTER_CHAINSUFFIX_RARP,
Index: libvirt-acl/docs/schemas/nwfilter.rng
===================================================================
--- libvirt-acl.orig/docs/schemas/nwfilter.rng
+++ libvirt-acl/docs/schemas/nwfilter.rng
@@ -297,6 +297,9 @@
<choice>
<value>root</value>
<data type="string">
+ <param name="pattern">mac[a-zA-Z0-9_\.:-]{0,9}</param>
+ </data>
+ <data type="string">
<param
name="pattern">vlan[a-zA-Z0-9_\.:-]{0,8}</param>
</data>
<data type="string">