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_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_node *node,
  48                            u16 sequence_nr);
  49
  50 void hsr_prune_nodes(struct timer_list *t);
  51 void hsr_prune_proxy_nodes(struct timer_list *t);
  52
  53 int hsr_create_self_node(struct hsr_priv *hsr,
  54                          const unsigned char addr_a[ETH_ALEN],
  55                          const unsigned char addr_b[ETH_ALEN]);
  56
  57 void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
  58                         unsigned char addr[ETH_ALEN]);
  59
  60 int hsr_get_node_data(struct hsr_priv *hsr,
  61                       const unsigned char *addr,
  62                       unsigned char addr_b[ETH_ALEN],
  63                       unsigned int *addr_b_ifindex,
  64                       int *if1_age,
  65                       u16 *if1_seq,
  66                       int *if2_age,
  67                       u16 *if2_seq);
  68
  69 void prp_handle_san_frame(bool san, enum hsr_port_type port,
  70                           struct hsr_node *node);
  71 void prp_update_san_info(struct hsr_node *node, bool is_sup);
  72
  73 bool hsr_is_node_in_db(struct list_head *node_db,
  74                        const unsigned char addr[ETH_ALEN]);
  75
  76 struct hsr_node {
  77         struct list_head        mac_list;
  78         /* Protect R/W access to seq_out */
  79         spinlock_t              seq_out_lock;
  80         unsigned char           macaddress_A[ETH_ALEN];
  81         unsigned char           macaddress_B[ETH_ALEN];
  82         /* Local slave through which AddrB frames are received from this node */
  83         enum hsr_port_type      addr_B_port;
  84         unsigned long           time_in[HSR_PT_PORTS];
  85         bool                    time_in_stale[HSR_PT_PORTS];
  86         unsigned long           time_out[HSR_PT_PORTS];
  87         /* if the node is a SAN */
  88         bool                    san_a;
  89         bool                    san_b;
  90         u16                     seq_out[HSR_PT_PORTS];
  91         bool                    removed;
  92         struct rcu_head         rcu_head;
  93 };
  94
  95 #endif /* __HSR_FRAMEREG_H */