/* SPDX-License-Identifier: GPL-2.0 */#ifndef __PACKET_INTERNAL_H__#define __PACKET_INTERNAL_H__ #include <linux/refcount.h> struct packet_mclist {	struct packet_mclist	*next;	int			ifindex;	int			count;	unsigned short		type;	unsigned short		alen;	unsigned char		addr[MAX_ADDR_LEN];	struct list_head	remove_list;}; /* kbdq - kernel block descriptor queue */struct tpacket_kbdq_core {	struct pgv	*pkbdq;	unsigned int	feature_req_word;	unsigned int	hdrlen;	unsigned char	reset_pending_on_curr_blk;	unsigned short	kactive_blk_num;	unsigned short	blk_sizeof_priv; 	unsigned short  version; 	char		*pkblk_start;	char		*pkblk_end;	int		kblk_size;	unsigned int	max_frame_len;	unsigned int	knum_blocks;	uint64_t	knxt_seq_num;	char		*prev;	char		*nxt_offset; 	struct sk_buff	*skb; 	rwlock_t	blk_fill_in_prog_lock; 	/* Default is set to 8ms */#define DEFAULT_PRB_RETIRE_TOV	(8) 	ktime_t		interval_ktime; 	/* timer to retire an outstanding block */	struct hrtimer  retire_blk_timer;}; struct pgv {	char *buffer;}; struct packet_ring_buffer {	struct pgv		*pg_vec; 	unsigned int		head;	unsigned int		frames_per_block;	unsigned int		frame_size;	unsigned int		frame_max; 	unsigned int		pg_vec_order;	unsigned int		pg_vec_pages;	unsigned int		pg_vec_len; 	unsigned int __percpu	*pending_refcnt; 	union {		unsigned long			*rx_owner_map;		struct tpacket_kbdq_core	prb_bdqc;	};}; extern struct mutex fanout_mutex;#define PACKET_FANOUT_MAX	(1 << 16) struct packet_fanout {	possible_net_t		net;	unsigned int		num_members;	u32			max_num_members;	u16			id;	u8			type;	u8			flags;	union {		atomic_t		rr_cur;		struct bpf_prog __rcu	*bpf_prog;	};	struct list_head	list;	spinlock_t		lock;	refcount_t		sk_ref;	struct packet_type	prot_hook ____cacheline_aligned_in_smp;	struct sock	__rcu	*arr[] __counted_by(max_num_members);}; struct packet_rollover {	int			sock;	atomic_long_t		num;	atomic_long_t		num_huge;	atomic_long_t		num_failed;#define ROLLOVER_HLEN	(L1_CACHE_BYTES / sizeof(u32))	u32			history[ROLLOVER_HLEN] ____cacheline_aligned;} ____cacheline_aligned_in_smp; struct packet_sock {	/* struct sock has to be the first member of packet_sock */	struct sock		sk;	struct packet_fanout	*fanout;	union  tpacket_stats_u	stats;	struct packet_ring_buffer	rx_ring;	struct packet_ring_buffer	tx_ring;	int			copy_thresh;	spinlock_t		bind_lock;	struct mutex		pg_vec_lock;	unsigned long		flags;	int			ifindex;	/* bound device		*/	u8			vnet_hdr_sz;	__be16			num;	struct packet_rollover	*rollover;	struct packet_mclist	*mclist;	atomic_long_t		mapped;	enum tpacket_versions	tp_version;	unsigned int		tp_hdrlen;	unsigned int		tp_reserve;	unsigned int		tp_tstamp;	struct completion	skb_completion;	struct net_device __rcu	*cached_dev;	struct packet_type	prot_hook ____cacheline_aligned_in_smp;	atomic_t		tp_drops ____cacheline_aligned_in_smp;}; #define pkt_sk(ptr) container_of_const(ptr, struct packet_sock, sk) enum packet_sock_flags {	PACKET_SOCK_ORIGDEV,	PACKET_SOCK_AUXDATA,	PACKET_SOCK_TX_HAS_OFF,	PACKET_SOCK_TP_LOSS,	PACKET_SOCK_RUNNING,	PACKET_SOCK_PRESSURE,	PACKET_SOCK_QDISC_BYPASS,}; static inline void packet_sock_flag_set(struct packet_sock *po,					enum packet_sock_flags flag,					bool val){	if (val)		set_bit(flag, &po->flags);	else		clear_bit(flag, &po->flags);} static inline bool packet_sock_flag(const struct packet_sock *po,				    enum packet_sock_flags flag){	return test_bit(flag, &po->flags);} #endif