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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/net/hsr/hsr_framereg.h
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/* SPDX-License-Identifier: GPL-2.0 */

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/* Copyright 2011-2014 Autronica Fire and Security AS

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 *

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 * Author(s):

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 *	2011-2014 Arvid Brodin, [email protected]

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 *

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 * include file for HSR and PRP.

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 */

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#ifndef __HSR_FRAMEREG_H

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#define __HSR_FRAMEREG_H

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#include "hsr_main.h"

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struct hsr_node;

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struct hsr_frame_info {

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	struct sk_buff *skb_std;

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	struct sk_buff *skb_hsr;

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	struct sk_buff *skb_prp;

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	struct hsr_port *port_rcv;

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	struct hsr_node *node_src;

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	u16 sequence_nr;

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	bool is_supervision;

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	bool is_proxy_supervision;

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	bool is_vlan;

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	bool is_local_dest;

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	bool is_local_exclusive;

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	bool is_from_san;

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};

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void hsr_del_self_node(struct hsr_priv *hsr);

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void hsr_del_nodes(struct list_head *node_db);

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struct hsr_node *hsr_get_node(struct hsr_port *port, struct list_head *node_db,

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			      struct sk_buff *skb, bool is_sup,

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			      enum hsr_port_type rx_port);

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void hsr_handle_sup_frame(struct hsr_frame_info *frame);

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bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr);

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bool hsr_addr_is_redbox(struct hsr_priv *hsr, unsigned char *addr);

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void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb);

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void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb,

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			 struct hsr_port *port);

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void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port,

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			   u16 sequence_nr);

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int hsr_register_frame_out(struct hsr_port *port, struct hsr_frame_info *frame);

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void hsr_prune_nodes(struct timer_list *t);

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void hsr_prune_proxy_nodes(struct timer_list *t);

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int hsr_create_self_node(struct hsr_priv *hsr,

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			 const unsigned char addr_a[ETH_ALEN],

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			 const unsigned char addr_b[ETH_ALEN]);

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void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,

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			unsigned char addr[ETH_ALEN]);

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int hsr_get_node_data(struct hsr_priv *hsr,

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		      const unsigned char *addr,

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		      unsigned char addr_b[ETH_ALEN],

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		      unsigned int *addr_b_ifindex,

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		      int *if1_age,

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		      u16 *if1_seq,

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		      int *if2_age,

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		      u16 *if2_seq);

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void prp_handle_san_frame(bool san, enum hsr_port_type port,

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			  struct hsr_node *node);

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void prp_update_san_info(struct hsr_node *node, bool is_sup);

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bool hsr_is_node_in_db(struct list_head *node_db,

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		       const unsigned char addr[ETH_ALEN]);

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int prp_register_frame_out(struct hsr_port *port, struct hsr_frame_info *frame);

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struct hsr_node {

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	struct list_head	mac_list;

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	/* Protect R/W access to seq_out */

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	spinlock_t		seq_out_lock;

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	unsigned char		macaddress_A[ETH_ALEN];

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	unsigned char		macaddress_B[ETH_ALEN];

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	/* Local slave through which AddrB frames are received from this node */

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	enum hsr_port_type	addr_B_port;

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	unsigned long		time_in[HSR_PT_PORTS];

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	bool			time_in_stale[HSR_PT_PORTS];

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	unsigned long		time_out[HSR_PT_PORTS];

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	/* if the node is a SAN */

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	bool			san_a;

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	bool			san_b;

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	u16			seq_out[HSR_PT_PORTS];

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	bool			removed;

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	/* PRP specific duplicate handling */

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	u16			seq_expected[HSR_PT_PORTS];

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	u16			seq_start[HSR_PT_PORTS];

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	struct rcu_head		rcu_head;

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};

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#endif /* __HSR_FRAMEREG_H */

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