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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright 2011-2014 Autronica Fire and Security AS
*
* Author(s):
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*
* include file for HSR and PRP.
*/
#ifndef __HSR_FRAMEREG_H
#define __HSR_FRAMEREG_H
#include "hsr_main.h"
struct hsr_node;
struct hsr_frame_info {
struct sk_buff *skb_std;
struct sk_buff *skb_hsr;
struct sk_buff *skb_prp;
struct hsr_port *port_rcv;
struct hsr_node *node_src;
u16 sequence_nr;
bool is_supervision;
bool is_proxy_supervision;
bool is_vlan;
bool is_local_dest;
bool is_local_exclusive;
bool is_from_san;
};
void hsr_del_self_node(struct hsr_priv *hsr);
void hsr_del_nodes(struct list_head *node_db);
struct hsr_node *hsr_get_node(struct hsr_port *port, struct list_head *node_db,
struct sk_buff *skb, bool is_sup,
enum hsr_port_type rx_port);
void hsr_handle_sup_frame(struct hsr_frame_info *frame);
bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr);
bool hsr_addr_is_redbox(struct hsr_priv *hsr, unsigned char *addr);
void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb);
void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb,
struct hsr_port *port);
void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port,
u16 sequence_nr);
int hsr_register_frame_out(struct hsr_port *port, struct hsr_frame_info *frame);
void hsr_prune_nodes(struct timer_list *t);
void hsr_prune_proxy_nodes(struct timer_list *t);
int hsr_create_self_node(struct hsr_priv *hsr,
const unsigned char addr_a[ETH_ALEN],
const unsigned char addr_b[ETH_ALEN]);
void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
unsigned char addr[ETH_ALEN]);
int hsr_get_node_data(struct hsr_priv *hsr,
const unsigned char *addr,
unsigned char addr_b[ETH_ALEN],
unsigned int *addr_b_ifindex,
int *if1_age,
u16 *if1_seq,
int *if2_age,
u16 *if2_seq);
void prp_handle_san_frame(bool san, enum hsr_port_type port,
struct hsr_node *node);
void prp_update_san_info(struct hsr_node *node, bool is_sup);
bool hsr_is_node_in_db(struct list_head *node_db,
const unsigned char addr[ETH_ALEN]);
int prp_register_frame_out(struct hsr_port *port, struct hsr_frame_info *frame);
#if IS_ENABLED(CONFIG_KUNIT)
struct hsr_seq_block *hsr_get_seq_block(struct hsr_node *node, u16 block_idx);
#endif
#define HSR_SEQ_BLOCK_SHIFT 7 /* 128 bits */
#define HSR_SEQ_BLOCK_SIZE (1 << HSR_SEQ_BLOCK_SHIFT)
#define HSR_SEQ_BLOCK_MASK (HSR_SEQ_BLOCK_SIZE - 1)
#define HSR_MAX_SEQ_BLOCKS 64
#define hsr_seq_block_index(sequence_nr) ((sequence_nr) >> HSR_SEQ_BLOCK_SHIFT)
#define hsr_seq_block_bit(sequence_nr) ((sequence_nr) & HSR_SEQ_BLOCK_MASK)
struct hsr_seq_block {
unsigned long time;
u16 block_idx;
/* Should be a flexible array member of what DECLARE_BITMAP() would
* produce.
*/
unsigned long seq_nrs[][BITS_TO_LONGS(HSR_SEQ_BLOCK_SIZE)];
};
struct hsr_node {
struct list_head mac_list;
/* Protect R/W access seq_blocks */
spinlock_t seq_out_lock;
unsigned char macaddress_A[ETH_ALEN];
unsigned char macaddress_B[ETH_ALEN];
/* Local slave through which AddrB frames are received from this node */
enum hsr_port_type addr_B_port;
unsigned long time_in[HSR_PT_PORTS];
bool time_in_stale[HSR_PT_PORTS];
/* if the node is a SAN */
bool san_a;
bool san_b;
bool removed;
/* Duplicate detection */
struct xarray seq_blocks;
void *block_buf;
unsigned int next_block;
unsigned int seq_port_cnt;
struct rcu_head rcu_head;
};
static inline size_t hsr_seq_block_size(struct hsr_node *node)
{
WARN_ON_ONCE(node->seq_port_cnt == 0);
return struct_size_t(struct hsr_seq_block, seq_nrs, node->seq_port_cnt);
}
#endif /* __HSR_FRAMEREG_H */
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