net/hsr/hsr_framereg.h

Source file repositories/reference/linux-study-clean/net/hsr/hsr_framereg.h

File Facts

System
Linux kernel
Corpus path
net/hsr/hsr_framereg.h
Extension
.h
Size
3796 bytes
Lines
127
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

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];

Annotation

Implementation Notes