148 строки
3.1 KiB
C
148 строки
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _NET_MRP_H
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#define _NET_MRP_H
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/types.h>
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#define MRP_END_MARK 0x0
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struct mrp_pdu_hdr {
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u8 version;
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};
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struct mrp_msg_hdr {
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u8 attrtype;
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u8 attrlen;
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};
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struct mrp_vecattr_hdr {
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__be16 lenflags;
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unsigned char firstattrvalue[];
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#define MRP_VECATTR_HDR_LEN_MASK cpu_to_be16(0x1FFF)
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#define MRP_VECATTR_HDR_FLAG_LA cpu_to_be16(0x2000)
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};
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enum mrp_vecattr_event {
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MRP_VECATTR_EVENT_NEW,
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MRP_VECATTR_EVENT_JOIN_IN,
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MRP_VECATTR_EVENT_IN,
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MRP_VECATTR_EVENT_JOIN_MT,
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MRP_VECATTR_EVENT_MT,
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MRP_VECATTR_EVENT_LV,
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__MRP_VECATTR_EVENT_MAX
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};
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struct mrp_skb_cb {
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struct mrp_msg_hdr *mh;
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struct mrp_vecattr_hdr *vah;
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unsigned char attrvalue[];
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};
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static inline struct mrp_skb_cb *mrp_cb(struct sk_buff *skb)
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{
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BUILD_BUG_ON(sizeof(struct mrp_skb_cb) >
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sizeof_field(struct sk_buff, cb));
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return (struct mrp_skb_cb *)skb->cb;
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}
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enum mrp_applicant_state {
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MRP_APPLICANT_INVALID,
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MRP_APPLICANT_VO,
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MRP_APPLICANT_VP,
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MRP_APPLICANT_VN,
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MRP_APPLICANT_AN,
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MRP_APPLICANT_AA,
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MRP_APPLICANT_QA,
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MRP_APPLICANT_LA,
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MRP_APPLICANT_AO,
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MRP_APPLICANT_QO,
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MRP_APPLICANT_AP,
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MRP_APPLICANT_QP,
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__MRP_APPLICANT_MAX
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};
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#define MRP_APPLICANT_MAX (__MRP_APPLICANT_MAX - 1)
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enum mrp_event {
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MRP_EVENT_NEW,
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MRP_EVENT_JOIN,
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MRP_EVENT_LV,
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MRP_EVENT_TX,
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MRP_EVENT_R_NEW,
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MRP_EVENT_R_JOIN_IN,
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MRP_EVENT_R_IN,
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MRP_EVENT_R_JOIN_MT,
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MRP_EVENT_R_MT,
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MRP_EVENT_R_LV,
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MRP_EVENT_R_LA,
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MRP_EVENT_REDECLARE,
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MRP_EVENT_PERIODIC,
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__MRP_EVENT_MAX
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};
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#define MRP_EVENT_MAX (__MRP_EVENT_MAX - 1)
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enum mrp_tx_action {
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MRP_TX_ACTION_NONE,
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MRP_TX_ACTION_S_NEW,
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MRP_TX_ACTION_S_JOIN_IN,
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MRP_TX_ACTION_S_JOIN_IN_OPTIONAL,
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MRP_TX_ACTION_S_IN_OPTIONAL,
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MRP_TX_ACTION_S_LV,
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};
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struct mrp_attr {
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struct rb_node node;
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enum mrp_applicant_state state;
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u8 type;
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u8 len;
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unsigned char value[];
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};
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enum mrp_applications {
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MRP_APPLICATION_MVRP,
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__MRP_APPLICATION_MAX
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};
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#define MRP_APPLICATION_MAX (__MRP_APPLICATION_MAX - 1)
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struct mrp_application {
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enum mrp_applications type;
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unsigned int maxattr;
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struct packet_type pkttype;
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unsigned char group_address[ETH_ALEN];
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u8 version;
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};
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struct mrp_applicant {
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struct mrp_application *app;
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struct net_device *dev;
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struct timer_list join_timer;
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struct timer_list periodic_timer;
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spinlock_t lock;
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struct sk_buff_head queue;
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struct sk_buff *pdu;
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struct rb_root mad;
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struct rcu_head rcu;
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};
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struct mrp_port {
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struct mrp_applicant __rcu *applicants[MRP_APPLICATION_MAX + 1];
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struct rcu_head rcu;
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};
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int mrp_register_application(struct mrp_application *app);
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void mrp_unregister_application(struct mrp_application *app);
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int mrp_init_applicant(struct net_device *dev, struct mrp_application *app);
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void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *app);
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int mrp_request_join(const struct net_device *dev,
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const struct mrp_application *app,
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const void *value, u8 len, u8 type);
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void mrp_request_leave(const struct net_device *dev,
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const struct mrp_application *app,
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const void *value, u8 len, u8 type);
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#endif /* _NET_MRP_H */
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