| Pavel Emelyanov | 2787b04 | 2012-08-13 05:49:39 +0000 | [diff] [blame^] | 1 | #ifndef __PACKET_INTERNAL_H__ |
| 2 | #define __PACKET_INTERNAL_H__ |
| 3 | |
| 4 | struct packet_mclist { |
| 5 | struct packet_mclist *next; |
| 6 | int ifindex; |
| 7 | int count; |
| 8 | unsigned short type; |
| 9 | unsigned short alen; |
| 10 | unsigned char addr[MAX_ADDR_LEN]; |
| 11 | }; |
| 12 | |
| 13 | /* kbdq - kernel block descriptor queue */ |
| 14 | struct tpacket_kbdq_core { |
| 15 | struct pgv *pkbdq; |
| 16 | unsigned int feature_req_word; |
| 17 | unsigned int hdrlen; |
| 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; |
| 22 | |
| 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. |
| 26 | */ |
| 27 | unsigned short last_kactive_blk_num; |
| 28 | |
| 29 | char *pkblk_start; |
| 30 | char *pkblk_end; |
| 31 | int kblk_size; |
| 32 | unsigned int knum_blocks; |
| 33 | uint64_t knxt_seq_num; |
| 34 | char *prev; |
| 35 | char *nxt_offset; |
| 36 | struct sk_buff *skb; |
| 37 | |
| 38 | atomic_t blk_fill_in_prog; |
| 39 | |
| 40 | /* Default is set to 8ms */ |
| 41 | #define DEFAULT_PRB_RETIRE_TOV (8) |
| 42 | |
| 43 | unsigned short retire_blk_tov; |
| 44 | unsigned short version; |
| 45 | unsigned long tov_in_jiffies; |
| 46 | |
| 47 | /* timer to retire an outstanding block */ |
| 48 | struct timer_list retire_blk_timer; |
| 49 | }; |
| 50 | |
| 51 | struct pgv { |
| 52 | char *buffer; |
| 53 | }; |
| 54 | |
| 55 | struct packet_ring_buffer { |
| 56 | struct pgv *pg_vec; |
| 57 | unsigned int head; |
| 58 | unsigned int frames_per_block; |
| 59 | unsigned int frame_size; |
| 60 | unsigned int frame_max; |
| 61 | |
| 62 | unsigned int pg_vec_order; |
| 63 | unsigned int pg_vec_pages; |
| 64 | unsigned int pg_vec_len; |
| 65 | |
| 66 | struct tpacket_kbdq_core prb_bdqc; |
| 67 | atomic_t pending; |
| 68 | }; |
| 69 | |
| 70 | struct packet_fanout; |
| 71 | struct packet_sock { |
| 72 | /* struct sock has to be the first member of packet_sock */ |
| 73 | struct sock sk; |
| 74 | struct packet_fanout *fanout; |
| 75 | struct tpacket_stats stats; |
| 76 | union tpacket_stats_u stats_u; |
| 77 | struct packet_ring_buffer rx_ring; |
| 78 | struct packet_ring_buffer tx_ring; |
| 79 | int copy_thresh; |
| 80 | spinlock_t bind_lock; |
| 81 | struct mutex pg_vec_lock; |
| 82 | unsigned int running:1, /* prot_hook is attached*/ |
| 83 | auxdata:1, |
| 84 | origdev:1, |
| 85 | has_vnet_hdr:1; |
| 86 | int ifindex; /* bound device */ |
| 87 | __be16 num; |
| 88 | struct packet_mclist *mclist; |
| 89 | atomic_t mapped; |
| 90 | enum tpacket_versions tp_version; |
| 91 | unsigned int tp_hdrlen; |
| 92 | unsigned int tp_reserve; |
| 93 | unsigned int tp_loss:1; |
| 94 | unsigned int tp_tstamp; |
| 95 | struct packet_type prot_hook ____cacheline_aligned_in_smp; |
| 96 | }; |
| 97 | |
| 98 | static struct packet_sock *pkt_sk(struct sock *sk) |
| 99 | { |
| 100 | return (struct packet_sock *)sk; |
| 101 | } |
| 102 | |
| 103 | #endif |