Commit | Line | Data |
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2787b04b PE |
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; | |
dc808110 | 32 | unsigned int max_frame_len; |
2787b04b PE |
33 | unsigned int knum_blocks; |
34 | uint64_t knxt_seq_num; | |
35 | char *prev; | |
36 | char *nxt_offset; | |
37 | struct sk_buff *skb; | |
38 | ||
39 | atomic_t blk_fill_in_prog; | |
40 | ||
41 | /* Default is set to 8ms */ | |
42 | #define DEFAULT_PRB_RETIRE_TOV (8) | |
43 | ||
44 | unsigned short retire_blk_tov; | |
45 | unsigned short version; | |
46 | unsigned long tov_in_jiffies; | |
47 | ||
48 | /* timer to retire an outstanding block */ | |
49 | struct timer_list retire_blk_timer; | |
50 | }; | |
51 | ||
52 | struct pgv { | |
53 | char *buffer; | |
54 | }; | |
55 | ||
56 | struct packet_ring_buffer { | |
57 | struct pgv *pg_vec; | |
0578edc5 | 58 | |
2787b04b PE |
59 | unsigned int head; |
60 | unsigned int frames_per_block; | |
61 | unsigned int frame_size; | |
62 | unsigned int frame_max; | |
63 | ||
64 | unsigned int pg_vec_order; | |
65 | unsigned int pg_vec_pages; | |
66 | unsigned int pg_vec_len; | |
67 | ||
b0138408 | 68 | unsigned int __percpu *pending_refcnt; |
0578edc5 DB |
69 | |
70 | struct tpacket_kbdq_core prb_bdqc; | |
2787b04b PE |
71 | }; |
72 | ||
fff3321d PE |
73 | extern struct mutex fanout_mutex; |
74 | #define PACKET_FANOUT_MAX 256 | |
75 | ||
76 | struct packet_fanout { | |
0c5c9fb5 | 77 | possible_net_t net; |
fff3321d PE |
78 | unsigned int num_members; |
79 | u16 id; | |
80 | u8 type; | |
77f65ebd | 81 | u8 flags; |
47dceb8e WB |
82 | union { |
83 | atomic_t rr_cur; | |
84 | struct bpf_prog __rcu *bpf_prog; | |
85 | }; | |
fff3321d PE |
86 | struct list_head list; |
87 | struct sock *arr[PACKET_FANOUT_MAX]; | |
88 | spinlock_t lock; | |
89 | atomic_t sk_ref; | |
90 | struct packet_type prot_hook ____cacheline_aligned_in_smp; | |
91 | }; | |
92 | ||
0648ab70 WB |
93 | struct packet_rollover { |
94 | int sock; | |
59f21118 | 95 | struct rcu_head rcu; |
a9b63918 WB |
96 | atomic_long_t num; |
97 | atomic_long_t num_huge; | |
98 | atomic_long_t num_failed; | |
3b3a5b0a WB |
99 | #define ROLLOVER_HLEN (L1_CACHE_BYTES / sizeof(u32)) |
100 | u32 history[ROLLOVER_HLEN] ____cacheline_aligned; | |
0648ab70 WB |
101 | } ____cacheline_aligned_in_smp; |
102 | ||
2787b04b PE |
103 | struct packet_sock { |
104 | /* struct sock has to be the first member of packet_sock */ | |
105 | struct sock sk; | |
106 | struct packet_fanout *fanout; | |
ee80fbf3 | 107 | union tpacket_stats_u stats; |
2787b04b PE |
108 | struct packet_ring_buffer rx_ring; |
109 | struct packet_ring_buffer tx_ring; | |
110 | int copy_thresh; | |
111 | spinlock_t bind_lock; | |
112 | struct mutex pg_vec_lock; | |
113 | unsigned int running:1, /* prot_hook is attached*/ | |
114 | auxdata:1, | |
115 | origdev:1, | |
116 | has_vnet_hdr:1; | |
2ccdbaa6 | 117 | int pressure; |
2787b04b PE |
118 | int ifindex; /* bound device */ |
119 | __be16 num; | |
0648ab70 | 120 | struct packet_rollover *rollover; |
2787b04b PE |
121 | struct packet_mclist *mclist; |
122 | atomic_t mapped; | |
123 | enum tpacket_versions tp_version; | |
124 | unsigned int tp_hdrlen; | |
125 | unsigned int tp_reserve; | |
126 | unsigned int tp_loss:1; | |
5920cd3a | 127 | unsigned int tp_tx_has_off:1; |
2787b04b | 128 | unsigned int tp_tstamp; |
e40526cb | 129 | struct net_device __rcu *cached_dev; |
d346a3fa | 130 | int (*xmit)(struct sk_buff *skb); |
2787b04b PE |
131 | struct packet_type prot_hook ____cacheline_aligned_in_smp; |
132 | }; | |
133 | ||
134 | static struct packet_sock *pkt_sk(struct sock *sk) | |
135 | { | |
136 | return (struct packet_sock *)sk; | |
137 | } | |
138 | ||
139 | #endif |