From: Roopa Prabhu <[email protected]>
This patch introduces the following netlink interface to set
MAC and VLAN filters on an network interface
[IFLA_RX_FILTER] = {
[IFLA_ADDR_FILTER] = {
[IFLA_ADDR_FILTER_FLAGS]
[IFLA_ADDR_FILTER_UC_LIST] = {
[IFLA_ADDR_LIST_ENTRY]
}
[IFLA_ADDR_FILTER_MC_LIST] = {
[IFLA_ADDR_LIST_ENTRY]
}
}
[IFLA_VLAN_FILTER] = {
[IFLA_VLAN_BITMAP]
}
}
Signed-off-by: Roopa Prabhu <[email protected]>
Signed-off-by: Christian Benvenuti <[email protected]>
Signed-off-by: David Wang <[email protected]>
---
include/linux/if_link.h | 39 +++++++++++++++++++++++++++++++++++++++
net/core/rtnetlink.c | 18 ++++++++++++++++++
2 files changed, 57 insertions(+), 0 deletions(-)
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index c52d4b5..41dbcbe 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -137,6 +137,7 @@ enum {
IFLA_AF_SPEC,
IFLA_GROUP, /* Group the device belongs to */
IFLA_NET_NS_FD,
+ IFLA_RX_FILTER,
__IFLA_MAX
};
@@ -390,4 +391,42 @@ struct ifla_port_vsi {
__u8 pad[3];
};
+/* Addr filters */
+enum {
+ IFLA_RX_FILTER_UNSPEC,
+ IFLA_RX_ADDR_FILTER,
+ IFLA_RX_VLAN_FILTER,
+ __IFLA_RX_FILTER_MAX,
+};
+#define IFLA_RX_FILTER_MAX (__IFLA_RX_FILTER_MAX - 1)
+
+enum {
+ IFLA_ADDR_FILTER_UNSPEC,
+ IFLA_ADDR_FILTER_FLAGS,
+ IFLA_ADDR_FILTER_UC_LIST,
+ IFLA_ADDR_FILTER_MC_LIST,
+ __IFLA_ADDR_FILTER_MAX,
+};
+#define IFLA_ADDR_FILTER_MAX (__IFLA_ADDR_FILTER_MAX - 1)
+
+#define RX_FILTER_FLAGS (IFF_UP | IFF_BROADCAST | IFF_MULTICAST | \
+ IFF_PROMISC | IFF_ALLMULTI)
+
+enum {
+ IFLA_ADDR_LIST_UNSPEC,
+ IFLA_ADDR_LIST_ENTRY,
+ __IFLA_ADDR_LIST_MAX,
+};
+#define IFLA_ADDR_LIST_MAX (__IFLA_ADDR_LIST_MAX - 1)
+
+enum {
+ IFLA_VLAN_FILTER_UNSPEC,
+ IFLA_VLAN_BITMAP,
+ __IFLA_VLAN_FILTER_MAX,
+};
+#define IFLA_VLAN_FILTER_MAX (__IFLA_VLAN_FILTER_MAX - 1)
+
+#define VLAN_BITMAP_SPLIT_MAX 8
+#define VLAN_BITMAP_SIZE (VLAN_N_VID/VLAN_BITMAP_SPLIT_MAX)
+
#endif /* _LINUX_IF_LINK_H */
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 9083e82..a3b213f 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -42,6 +42,7 @@
#include <linux/inet.h>
#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
#include <net/ip.h>
#include <net/protocol.h>
#include <net/arp.h>
@@ -1097,9 +1098,26 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_VF_PORTS] = { .type = NLA_NESTED },
[IFLA_PORT_SELF] = { .type = NLA_NESTED },
[IFLA_AF_SPEC] = { .type = NLA_NESTED },
+ [IFLA_RX_FILTER] = { .type = NLA_NESTED },
};
EXPORT_SYMBOL(ifla_policy);
+static const struct nla_policy ifla_rx_filter_policy[IFLA_RX_FILTER_MAX+1] = {
+ [IFLA_RX_ADDR_FILTER] = { .type = NLA_NESTED },
+ [IFLA_RX_VLAN_FILTER] = { .type = NLA_NESTED },
+};
+
+static const struct nla_policy ifla_addr_filter_policy[IFLA_ADDR_FILTER_MAX+1]
= {
+ [IFLA_ADDR_FILTER_FLAGS] = { .type = NLA_U32 },
+ [IFLA_ADDR_FILTER_UC_LIST] = { .type = NLA_NESTED },
+ [IFLA_ADDR_FILTER_MC_LIST] = { .type = NLA_NESTED },
+};
+
+static const struct nla_policy ifla_vlan_filter_policy[IFLA_VLAN_FILTER_MAX+1]
= {
+ [IFLA_VLAN_BITMAP] = { .type = NLA_BINARY,
+ .len = VLAN_BITMAP_SIZE },
+};
+
static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
[IFLA_INFO_KIND] = { .type = NLA_STRING },
[IFLA_INFO_DATA] = { .type = NLA_NESTED },
--
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