1 #ifndef __PACKET_INTERNAL_H__
2 #define __PACKET_INTERNAL_H__
5 struct packet_mclist *next;
10 unsigned char addr[MAX_ADDR_LEN];
13 /* kbdq - kernel block descriptor queue */
14 struct tpacket_kbdq_core {
16 unsigned int feature_req_word;
18 unsigned char reset_pending_on_curr_blk;
19 unsigned char delete_blk_timer;
20 unsigned short kactive_blk_num;
21 unsigned short blk_sizeof_priv;
23 /* last_kactive_blk_num:
24 * trick to see if user-space has caught up
25 * in order to avoid refreshing timer when every single pkt arrives.
27 unsigned short last_kactive_blk_num;
32 unsigned int knum_blocks;
33 uint64_t knxt_seq_num;
38 atomic_t blk_fill_in_prog;
40 /* Default is set to 8ms */
41 #define DEFAULT_PRB_RETIRE_TOV (8)
43 unsigned short retire_blk_tov;
44 unsigned short version;
45 unsigned long tov_in_jiffies;
47 /* timer to retire an outstanding block */
48 struct timer_list retire_blk_timer;
55 struct packet_ring_buffer {
58 unsigned int frames_per_block;
59 unsigned int frame_size;
60 unsigned int frame_max;
62 unsigned int pg_vec_order;
63 unsigned int pg_vec_pages;
64 unsigned int pg_vec_len;
66 struct tpacket_kbdq_core prb_bdqc;
70 extern struct mutex fanout_mutex;
71 #define PACKET_FANOUT_MAX 256
73 struct packet_fanout {
77 unsigned int num_members;
82 struct list_head list;
83 struct sock *arr[PACKET_FANOUT_MAX];
84 int next[PACKET_FANOUT_MAX];
87 struct packet_type prot_hook ____cacheline_aligned_in_smp;
91 /* struct sock has to be the first member of packet_sock */
93 struct packet_fanout *fanout;
94 struct tpacket_stats stats;
95 union tpacket_stats_u stats_u;
96 struct packet_ring_buffer rx_ring;
97 struct packet_ring_buffer tx_ring;
100 struct mutex pg_vec_lock;
101 unsigned int running:1, /* prot_hook is attached*/
105 int ifindex; /* bound device */
107 struct packet_mclist *mclist;
109 enum tpacket_versions tp_version;
110 unsigned int tp_hdrlen;
111 unsigned int tp_reserve;
112 unsigned int tp_loss:1;
113 unsigned int tp_tx_has_off:1;
114 unsigned int tp_tstamp;
115 struct packet_type prot_hook ____cacheline_aligned_in_smp;
118 static struct packet_sock *pkt_sk(struct sock *sk)
120 return (struct packet_sock *)sk;