LXR linux/net/hsr/hsr

   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
  15struct hsr_node;
  16
  17struct 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
  31void hsr_del_self_node(struct hsr_priv *hsr);
  32void hsr_del_nodes(struct list_head *node_db);
  33struct 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);
  36void hsr_handle_sup_frame(struct hsr_frame_info *frame);
  37bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr);
  38
  39void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb);
  40void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb,
  41                         struct hsr_port *port);
  42
  43void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port,
  44                           u16 sequence_nr);
  45int hsr_register_frame_out(struct hsr_port *port, struct hsr_node *node,
  46                           u16 sequence_nr);
  47
  48void hsr_prune_nodes(struct timer_list *t);
  49
  50int hsr_create_self_node(struct hsr_priv *hsr,
  51                         unsigned char addr_a[ETH_ALEN],
  52                         unsigned char addr_b[ETH_ALEN]);
  53
  54void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
  55                        unsigned char addr[ETH_ALEN]);
  56
  57int 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
  66void prp_handle_san_frame(bool san, enum hsr_port_type port,
  67                          struct hsr_node *node);
  68void prp_update_san_info(struct hsr_node *node, bool is_sup);
  69
  70struct 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        unsigned long           time_out[HSR_PT_PORTS];
  79        /* if the node is a SAN */
  80        bool                    san_a;
  81        bool                    san_b;
  82        u16                     seq_out[HSR_PT_PORTS];
  83        struct rcu_head         rcu_head;
  84};
  85
  86#endif /* __HSR_FRAMEREG_H */
  87