net/802: Implement Multiple Registration Protocol (MRP)
Initial implementation of the Multiple Registration Protocol (MRP)
from IEEE 802.1Q-2011, based on the existing implementation of the
Generic Attribute Registration Protocol (GARP).
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/mrp.h b/include/net/mrp.h
new file mode 100644
index 0000000..4fbf02a
--- /dev/null
+++ b/include/net/mrp.h
@@ -0,0 +1,143 @@
+#ifndef _NET_MRP_H
+#define _NET_MRP_H
+
+#define MRP_END_MARK 0x0
+
+struct mrp_pdu_hdr {
+ u8 version;
+};
+
+struct mrp_msg_hdr {
+ u8 attrtype;
+ u8 attrlen;
+};
+
+struct mrp_vecattr_hdr {
+ __be16 lenflags;
+ unsigned char firstattrvalue[];
+#define MRP_VECATTR_HDR_LEN_MASK cpu_to_be16(0x1FFF)
+#define MRP_VECATTR_HDR_FLAG_LA cpu_to_be16(0x2000)
+};
+
+enum mrp_vecattr_event {
+ MRP_VECATTR_EVENT_NEW,
+ MRP_VECATTR_EVENT_JOIN_IN,
+ MRP_VECATTR_EVENT_IN,
+ MRP_VECATTR_EVENT_JOIN_MT,
+ MRP_VECATTR_EVENT_MT,
+ MRP_VECATTR_EVENT_LV,
+ __MRP_VECATTR_EVENT_MAX
+};
+
+struct mrp_skb_cb {
+ struct mrp_msg_hdr *mh;
+ struct mrp_vecattr_hdr *vah;
+ unsigned char attrvalue[];
+};
+
+static inline struct mrp_skb_cb *mrp_cb(struct sk_buff *skb)
+{
+ BUILD_BUG_ON(sizeof(struct mrp_skb_cb) >
+ FIELD_SIZEOF(struct sk_buff, cb));
+ return (struct mrp_skb_cb *)skb->cb;
+}
+
+enum mrp_applicant_state {
+ MRP_APPLICANT_INVALID,
+ MRP_APPLICANT_VO,
+ MRP_APPLICANT_VP,
+ MRP_APPLICANT_VN,
+ MRP_APPLICANT_AN,
+ MRP_APPLICANT_AA,
+ MRP_APPLICANT_QA,
+ MRP_APPLICANT_LA,
+ MRP_APPLICANT_AO,
+ MRP_APPLICANT_QO,
+ MRP_APPLICANT_AP,
+ MRP_APPLICANT_QP,
+ __MRP_APPLICANT_MAX
+};
+#define MRP_APPLICANT_MAX (__MRP_APPLICANT_MAX - 1)
+
+enum mrp_event {
+ MRP_EVENT_NEW,
+ MRP_EVENT_JOIN,
+ MRP_EVENT_LV,
+ MRP_EVENT_TX,
+ MRP_EVENT_R_NEW,
+ MRP_EVENT_R_JOIN_IN,
+ MRP_EVENT_R_IN,
+ MRP_EVENT_R_JOIN_MT,
+ MRP_EVENT_R_MT,
+ MRP_EVENT_R_LV,
+ MRP_EVENT_R_LA,
+ MRP_EVENT_REDECLARE,
+ MRP_EVENT_PERIODIC,
+ __MRP_EVENT_MAX
+};
+#define MRP_EVENT_MAX (__MRP_EVENT_MAX - 1)
+
+enum mrp_tx_action {
+ MRP_TX_ACTION_NONE,
+ MRP_TX_ACTION_S_NEW,
+ MRP_TX_ACTION_S_JOIN_IN,
+ MRP_TX_ACTION_S_JOIN_IN_OPTIONAL,
+ MRP_TX_ACTION_S_IN_OPTIONAL,
+ MRP_TX_ACTION_S_LV,
+};
+
+struct mrp_attr {
+ struct rb_node node;
+ enum mrp_applicant_state state;
+ u8 type;
+ u8 len;
+ unsigned char value[];
+};
+
+enum mrp_applications {
+ MRP_APPLICATION_MVRP,
+ __MRP_APPLICATION_MAX
+};
+#define MRP_APPLICATION_MAX (__MRP_APPLICATION_MAX - 1)
+
+struct mrp_application {
+ enum mrp_applications type;
+ unsigned int maxattr;
+ struct packet_type pkttype;
+ unsigned char group_address[ETH_ALEN];
+ u8 version;
+};
+
+struct mrp_applicant {
+ struct mrp_application *app;
+ struct net_device *dev;
+ struct timer_list join_timer;
+
+ spinlock_t lock;
+ struct sk_buff_head queue;
+ struct sk_buff *pdu;
+ struct rb_root mad;
+ struct rcu_head rcu;
+};
+
+struct mrp_port {
+ struct mrp_applicant __rcu *applicants[MRP_APPLICATION_MAX + 1];
+ struct rcu_head rcu;
+};
+
+extern int mrp_register_application(struct mrp_application *app);
+extern void mrp_unregister_application(struct mrp_application *app);
+
+extern int mrp_init_applicant(struct net_device *dev,
+ struct mrp_application *app);
+extern void mrp_uninit_applicant(struct net_device *dev,
+ struct mrp_application *app);
+
+extern int mrp_request_join(const struct net_device *dev,
+ const struct mrp_application *app,
+ const void *value, u8 len, u8 type);
+extern void mrp_request_leave(const struct net_device *dev,
+ const struct mrp_application *app,
+ const void *value, u8 len, u8 type);
+
+#endif /* _NET_MRP_H */