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- #ifndef __PACKET_INTERNAL_H__
- #define __PACKET_INTERNAL_H__
- struct packet_mclist {
- struct packet_mclist *next;
- int ifindex;
- int count;
- unsigned short type;
- unsigned short alen;
- unsigned char addr[MAX_ADDR_LEN];
- };
- /* 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 char delete_blk_timer;
- unsigned short kactive_blk_num;
- unsigned short blk_sizeof_priv;
- /* last_kactive_blk_num:
- * trick to see if user-space has caught up
- * in order to avoid refreshing timer when every single pkt arrives.
- */
- unsigned short last_kactive_blk_num;
- char *pkblk_start;
- char *pkblk_end;
- int kblk_size;
- unsigned int knum_blocks;
- uint64_t knxt_seq_num;
- char *prev;
- char *nxt_offset;
- struct sk_buff *skb;
- atomic_t blk_fill_in_prog;
- /* Default is set to 8ms */
- #define DEFAULT_PRB_RETIRE_TOV (8)
- unsigned short retire_blk_tov;
- unsigned short version;
- unsigned long tov_in_jiffies;
- /* timer to retire an outstanding block */
- struct timer_list 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;
- struct tpacket_kbdq_core prb_bdqc;
- atomic_t pending;
- };
- struct packet_fanout;
- struct packet_sock {
- /* struct sock has to be the first member of packet_sock */
- struct sock sk;
- struct packet_fanout *fanout;
- struct tpacket_stats stats;
- union tpacket_stats_u stats_u;
- 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 int running:1, /* prot_hook is attached*/
- auxdata:1,
- origdev:1,
- has_vnet_hdr:1;
- int ifindex; /* bound device */
- __be16 num;
- struct packet_mclist *mclist;
- atomic_t mapped;
- enum tpacket_versions tp_version;
- unsigned int tp_hdrlen;
- unsigned int tp_reserve;
- unsigned int tp_loss:1;
- unsigned int tp_tstamp;
- struct packet_type prot_hook ____cacheline_aligned_in_smp;
- };
- static struct packet_sock *pkt_sk(struct sock *sk)
- {
- return (struct packet_sock *)sk;
- }
- #endif
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