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_proxy_supervision; 26 bool is_vlan; 27 bool is_local_dest; 28 bool is_local_exclusive; 29 bool is_from_san; 30 }; 31 32 void hsr_del_self_node(struct hsr_priv *hsr); 33 void hsr_del_nodes(struct list_head *node_db); 34 struct hsr_node *hsr_get_node(struct hsr_port *port, struct list_head *node_db, 35 struct sk_buff *skb, bool is_sup, 36 enum hsr_port_type rx_port); 37 void hsr_handle_sup_frame(struct hsr_frame_info *frame); 38 bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr); 39 bool hsr_addr_is_redbox(struct hsr_priv *hsr, unsigned char *addr); 40 41 void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb); 42 void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb, 43 struct hsr_port *port); 44 45 void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port, 46 u16 sequence_nr); 47 int hsr_register_frame_out(struct hsr_port *port, struct hsr_frame_info *frame); 48 49 void hsr_prune_nodes(struct timer_list *t); 50 void hsr_prune_proxy_nodes(struct timer_list *t); 51 52 int hsr_create_self_node(struct hsr_priv *hsr, 53 const unsigned char addr_a[ETH_ALEN], 54 const unsigned char addr_b[ETH_ALEN]); 55 56 void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos, 57 unsigned char addr[ETH_ALEN]); 58 59 int hsr_get_node_data(struct hsr_priv *hsr, 60 const unsigned char *addr, 61 unsigned char addr_b[ETH_ALEN], 62 unsigned int *addr_b_ifindex, 63 int *if1_age, 64 u16 *if1_seq, 65 int *if2_age, 66 u16 *if2_seq); 67 68 void prp_handle_san_frame(bool san, enum hsr_port_type port, 69 struct hsr_node *node); 70 void prp_update_san_info(struct hsr_node *node, bool is_sup); 71 72 bool hsr_is_node_in_db(struct list_head *node_db, 73 const unsigned char addr[ETH_ALEN]); 74 75 int prp_register_frame_out(struct hsr_port *port, struct hsr_frame_info *frame); 76 77 #if IS_ENABLED(CONFIG_KUNIT) 78 struct hsr_seq_block *hsr_get_seq_block(struct hsr_node *node, u16 block_idx); 79 #endif 80 81 #define HSR_SEQ_BLOCK_SHIFT 7 /* 128 bits */ 82 #define HSR_SEQ_BLOCK_SIZE (1 << HSR_SEQ_BLOCK_SHIFT) 83 #define HSR_SEQ_BLOCK_MASK (HSR_SEQ_BLOCK_SIZE - 1) 84 #define HSR_MAX_SEQ_BLOCKS 64 85 86 #define hsr_seq_block_index(sequence_nr) ((sequence_nr) >> HSR_SEQ_BLOCK_SHIFT) 87 #define hsr_seq_block_bit(sequence_nr) ((sequence_nr) & HSR_SEQ_BLOCK_MASK) 88 89 struct hsr_seq_block { 90 unsigned long time; 91 u16 block_idx; 92 /* Should be a flexible array member of what DECLARE_BITMAP() would 93 * produce. 94 */ 95 unsigned long seq_nrs[][BITS_TO_LONGS(HSR_SEQ_BLOCK_SIZE)]; 96 }; 97 98 struct hsr_node { 99 struct list_head mac_list; 100 /* Protect R/W access seq_blocks */ 101 spinlock_t seq_out_lock; 102 unsigned char macaddress_A[ETH_ALEN]; 103 unsigned char macaddress_B[ETH_ALEN]; 104 /* Local slave through which AddrB frames are received from this node */ 105 enum hsr_port_type addr_B_port; 106 unsigned long time_in[HSR_PT_PORTS]; 107 bool time_in_stale[HSR_PT_PORTS]; 108 /* if the node is a SAN */ 109 bool san_a; 110 bool san_b; 111 bool removed; 112 /* Duplicate detection */ 113 struct xarray seq_blocks; 114 void *block_buf; 115 unsigned int next_block; 116 unsigned int seq_port_cnt; 117 struct rcu_head rcu_head; 118 }; 119 120 static inline size_t hsr_seq_block_size(struct hsr_node *node) 121 { 122 WARN_ON_ONCE(node->seq_port_cnt == 0); 123 return struct_size_t(struct hsr_seq_block, seq_nrs, node->seq_port_cnt); 124 } 125 126 #endif /* __HSR_FRAMEREG_H */ 127