net/hsr/hsr_framereg.h

   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
  50 int hsr_create_self_node(struct hsr_priv *hsr,
  51                          unsigned char addr_a[ETH_ALEN],
  52                          unsigned char addr_b[ETH_ALEN]);
  53
  54 void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
  55                         unsigned char addr[ETH_ALEN]);
  56
  57 int hsr_get_node_data(struct hsr_priv *hsr,
  58                       const unsigned char *addr,
  59                       unsigned char addr_b[ETH_ALEN],
  60                       unsigned int *addr_b_ifindex,
  61                       int *if1_age,
  62                       u16 *if1_seq,
  63                       int *if2_age,
  64                       u16 *if2_seq);
  65
  66 void prp_handle_san_frame(bool san, enum hsr_port_type port,
  67                           struct hsr_node *node);
  68 void prp_update_san_info(struct hsr_node *node, bool is_sup);
  69
  70 struct hsr_node {
  71         struct list_head        mac_list;
  72         unsigned char           macaddress_A[ETH_ALEN];
  73         unsigned char           macaddress_B[ETH_ALEN];
  74         /* Local slave through which AddrB frames are received from this node */
  75         enum hsr_port_type      addr_B_port;
  76         unsigned long           time_in[HSR_PT_PORTS];
  77         bool                    time_in_stale[HSR_PT_PORTS];
  78         /* if the node is a SAN */
  79         bool                    san_a;
  80         bool                    san_b;
  81         u16                     seq_out[HSR_PT_PORTS];
  82         struct rcu_head         rcu_head;
  83 };
  84
  85 #endif /* __HSR_FRAMEREG_H */