xref: /linux/net/hsr/hsr_framereg.h (revision 90d32e92011eaae8e70a9169b4e7acf4ca8f9d3a)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright 2011-2014 Autronica Fire and Security AS
3  *
4  * Author(s):
5  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
6  *
7  * include file for HSR and PRP.
8  */
9 
10 #ifndef __HSR_FRAMEREG_H
11 #define __HSR_FRAMEREG_H
12 
13 #include "hsr_main.h"
14 
15 struct hsr_node;
16 
17 struct hsr_frame_info {
18 	struct sk_buff *skb_std;
19 	struct sk_buff *skb_hsr;
20 	struct sk_buff *skb_prp;
21 	struct hsr_port *port_rcv;
22 	struct hsr_node *node_src;
23 	u16 sequence_nr;
24 	bool is_supervision;
25 	bool is_vlan;
26 	bool is_local_dest;
27 	bool is_local_exclusive;
28 	bool is_from_san;
29 };
30 
31 void hsr_del_self_node(struct hsr_priv *hsr);
32 void hsr_del_nodes(struct list_head *node_db);
33 struct hsr_node *hsr_get_node(struct hsr_port *port, struct list_head *node_db,
34 			      struct sk_buff *skb, bool is_sup,
35 			      enum hsr_port_type rx_port);
36 void hsr_handle_sup_frame(struct hsr_frame_info *frame);
37 bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr);
38 
39 void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb);
40 void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb,
41 			 struct hsr_port *port);
42 
43 void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port,
44 			   u16 sequence_nr);
45 int hsr_register_frame_out(struct hsr_port *port, struct hsr_node *node,
46 			   u16 sequence_nr);
47 
48 void hsr_prune_nodes(struct timer_list *t);
49 void hsr_prune_proxy_nodes(struct timer_list *t);
50 
51 int hsr_create_self_node(struct hsr_priv *hsr,
52 			 const unsigned char addr_a[ETH_ALEN],
53 			 const unsigned char addr_b[ETH_ALEN]);
54 
55 void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
56 			unsigned char addr[ETH_ALEN]);
57 
58 int hsr_get_node_data(struct hsr_priv *hsr,
59 		      const unsigned char *addr,
60 		      unsigned char addr_b[ETH_ALEN],
61 		      unsigned int *addr_b_ifindex,
62 		      int *if1_age,
63 		      u16 *if1_seq,
64 		      int *if2_age,
65 		      u16 *if2_seq);
66 
67 void prp_handle_san_frame(bool san, enum hsr_port_type port,
68 			  struct hsr_node *node);
69 void prp_update_san_info(struct hsr_node *node, bool is_sup);
70 
71 bool hsr_is_node_in_db(struct list_head *node_db,
72 		       const unsigned char addr[ETH_ALEN]);
73 
74 struct hsr_node {
75 	struct list_head	mac_list;
76 	/* Protect R/W access to seq_out */
77 	spinlock_t		seq_out_lock;
78 	unsigned char		macaddress_A[ETH_ALEN];
79 	unsigned char		macaddress_B[ETH_ALEN];
80 	/* Local slave through which AddrB frames are received from this node */
81 	enum hsr_port_type	addr_B_port;
82 	unsigned long		time_in[HSR_PT_PORTS];
83 	bool			time_in_stale[HSR_PT_PORTS];
84 	unsigned long		time_out[HSR_PT_PORTS];
85 	/* if the node is a SAN */
86 	bool			san_a;
87 	bool			san_b;
88 	u16			seq_out[HSR_PT_PORTS];
89 	bool			removed;
90 	struct rcu_head		rcu_head;
91 };
92 
93 #endif /* __HSR_FRAMEREG_H */
94