cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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garp.h (2678B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _NET_GARP_H
      3#define _NET_GARP_H
      4
      5#include <net/stp.h>
      6
      7#define GARP_PROTOCOL_ID	0x1
      8#define GARP_END_MARK		0x0
      9
     10struct garp_pdu_hdr {
     11	__be16	protocol;
     12};
     13
     14struct garp_msg_hdr {
     15	u8	attrtype;
     16};
     17
     18enum garp_attr_event {
     19	GARP_LEAVE_ALL,
     20	GARP_JOIN_EMPTY,
     21	GARP_JOIN_IN,
     22	GARP_LEAVE_EMPTY,
     23	GARP_LEAVE_IN,
     24	GARP_EMPTY,
     25};
     26
     27struct garp_attr_hdr {
     28	u8	len;
     29	u8	event;
     30	u8	data[];
     31};
     32
     33struct garp_skb_cb {
     34	u8	cur_type;
     35};
     36
     37static inline struct garp_skb_cb *garp_cb(struct sk_buff *skb)
     38{
     39	BUILD_BUG_ON(sizeof(struct garp_skb_cb) >
     40		     sizeof_field(struct sk_buff, cb));
     41	return (struct garp_skb_cb *)skb->cb;
     42}
     43
     44enum garp_applicant_state {
     45	GARP_APPLICANT_INVALID,
     46	GARP_APPLICANT_VA,
     47	GARP_APPLICANT_AA,
     48	GARP_APPLICANT_QA,
     49	GARP_APPLICANT_LA,
     50	GARP_APPLICANT_VP,
     51	GARP_APPLICANT_AP,
     52	GARP_APPLICANT_QP,
     53	GARP_APPLICANT_VO,
     54	GARP_APPLICANT_AO,
     55	GARP_APPLICANT_QO,
     56	__GARP_APPLICANT_MAX
     57};
     58#define GARP_APPLICANT_MAX	(__GARP_APPLICANT_MAX - 1)
     59
     60enum garp_event {
     61	GARP_EVENT_REQ_JOIN,
     62	GARP_EVENT_REQ_LEAVE,
     63	GARP_EVENT_R_JOIN_IN,
     64	GARP_EVENT_R_JOIN_EMPTY,
     65	GARP_EVENT_R_EMPTY,
     66	GARP_EVENT_R_LEAVE_IN,
     67	GARP_EVENT_R_LEAVE_EMPTY,
     68	GARP_EVENT_TRANSMIT_PDU,
     69	__GARP_EVENT_MAX
     70};
     71#define GARP_EVENT_MAX		(__GARP_EVENT_MAX - 1)
     72
     73enum garp_action {
     74	GARP_ACTION_NONE,
     75	GARP_ACTION_S_JOIN_IN,
     76	GARP_ACTION_S_LEAVE_EMPTY,
     77};
     78
     79struct garp_attr {
     80	struct rb_node			node;
     81	enum garp_applicant_state	state;
     82	u8				type;
     83	u8				dlen;
     84	unsigned char			data[];
     85};
     86
     87enum garp_applications {
     88	GARP_APPLICATION_GVRP,
     89	__GARP_APPLICATION_MAX
     90};
     91#define GARP_APPLICATION_MAX	(__GARP_APPLICATION_MAX - 1)
     92
     93struct garp_application {
     94	enum garp_applications	type;
     95	unsigned int		maxattr;
     96	struct stp_proto	proto;
     97};
     98
     99struct garp_applicant {
    100	struct garp_application	*app;
    101	struct net_device	*dev;
    102	struct timer_list	join_timer;
    103
    104	spinlock_t		lock;
    105	struct sk_buff_head	queue;
    106	struct sk_buff		*pdu;
    107	struct rb_root		gid;
    108	struct rcu_head		rcu;
    109};
    110
    111struct garp_port {
    112	struct garp_applicant __rcu	*applicants[GARP_APPLICATION_MAX + 1];
    113	struct rcu_head			rcu;
    114};
    115
    116int garp_register_application(struct garp_application *app);
    117void garp_unregister_application(struct garp_application *app);
    118
    119int garp_init_applicant(struct net_device *dev, struct garp_application *app);
    120void garp_uninit_applicant(struct net_device *dev,
    121			   struct garp_application *app);
    122
    123int garp_request_join(const struct net_device *dev,
    124		      const struct garp_application *app, const void *data,
    125		      u8 len, u8 type);
    126void garp_request_leave(const struct net_device *dev,
    127			const struct garp_application *app,
    128			const void *data, u8 len, u8 type);
    129
    130#endif /* _NET_GARP_H */