Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2787b04b PE |
2 | #ifndef __PACKET_INTERNAL_H__ |
3 | #define __PACKET_INTERNAL_H__ | |
4 | ||
fb5c2c17 RE |
5 | #include <linux/refcount.h> |
6 | ||
2787b04b PE |
7 | struct packet_mclist { |
8 | struct packet_mclist *next; | |
9 | int ifindex; | |
10 | int count; | |
11 | unsigned short type; | |
12 | unsigned short alen; | |
13 | unsigned char addr[MAX_ADDR_LEN]; | |
14 | }; | |
15 | ||
16 | /* kbdq - kernel block descriptor queue */ | |
17 | struct tpacket_kbdq_core { | |
18 | struct pgv *pkbdq; | |
19 | unsigned int feature_req_word; | |
20 | unsigned int hdrlen; | |
21 | unsigned char reset_pending_on_curr_blk; | |
22 | unsigned char delete_blk_timer; | |
23 | unsigned short kactive_blk_num; | |
24 | unsigned short blk_sizeof_priv; | |
25 | ||
26 | /* last_kactive_blk_num: | |
27 | * trick to see if user-space has caught up | |
28 | * in order to avoid refreshing timer when every single pkt arrives. | |
29 | */ | |
30 | unsigned short last_kactive_blk_num; | |
31 | ||
32 | char *pkblk_start; | |
33 | char *pkblk_end; | |
34 | int kblk_size; | |
dc808110 | 35 | unsigned int max_frame_len; |
2787b04b PE |
36 | unsigned int knum_blocks; |
37 | uint64_t knxt_seq_num; | |
38 | char *prev; | |
39 | char *nxt_offset; | |
40 | struct sk_buff *skb; | |
41 | ||
632ca50f | 42 | rwlock_t blk_fill_in_prog_lock; |
2787b04b PE |
43 | |
44 | /* Default is set to 8ms */ | |
45 | #define DEFAULT_PRB_RETIRE_TOV (8) | |
46 | ||
47 | unsigned short retire_blk_tov; | |
48 | unsigned short version; | |
49 | unsigned long tov_in_jiffies; | |
50 | ||
51 | /* timer to retire an outstanding block */ | |
52 | struct timer_list retire_blk_timer; | |
53 | }; | |
54 | ||
55 | struct pgv { | |
56 | char *buffer; | |
57 | }; | |
58 | ||
59 | struct packet_ring_buffer { | |
60 | struct pgv *pg_vec; | |
0578edc5 | 61 | |
2787b04b PE |
62 | unsigned int head; |
63 | unsigned int frames_per_block; | |
64 | unsigned int frame_size; | |
65 | unsigned int frame_max; | |
66 | ||
3a7ad063 | 67 | unsigned int pg_vec_order; |
2787b04b PE |
68 | unsigned int pg_vec_pages; |
69 | unsigned int pg_vec_len; | |
70 | ||
b0138408 | 71 | unsigned int __percpu *pending_refcnt; |
0578edc5 | 72 | |
61fad681 WB |
73 | union { |
74 | unsigned long *rx_owner_map; | |
75 | struct tpacket_kbdq_core prb_bdqc; | |
76 | }; | |
2787b04b PE |
77 | }; |
78 | ||
fff3321d | 79 | extern struct mutex fanout_mutex; |
9c661b0b | 80 | #define PACKET_FANOUT_MAX (1 << 16) |
fff3321d PE |
81 | |
82 | struct packet_fanout { | |
0c5c9fb5 | 83 | possible_net_t net; |
fff3321d | 84 | unsigned int num_members; |
9c661b0b | 85 | u32 max_num_members; |
fff3321d PE |
86 | u16 id; |
87 | u8 type; | |
77f65ebd | 88 | u8 flags; |
47dceb8e WB |
89 | union { |
90 | atomic_t rr_cur; | |
91 | struct bpf_prog __rcu *bpf_prog; | |
92 | }; | |
fff3321d | 93 | struct list_head list; |
fff3321d | 94 | spinlock_t lock; |
fb5c2c17 | 95 | refcount_t sk_ref; |
fff3321d | 96 | struct packet_type prot_hook ____cacheline_aligned_in_smp; |
b3783e5e | 97 | struct sock __rcu *arr[] __counted_by(max_num_members); |
fff3321d PE |
98 | }; |
99 | ||
0648ab70 WB |
100 | struct packet_rollover { |
101 | int sock; | |
a9b63918 WB |
102 | atomic_long_t num; |
103 | atomic_long_t num_huge; | |
104 | atomic_long_t num_failed; | |
3b3a5b0a WB |
105 | #define ROLLOVER_HLEN (L1_CACHE_BYTES / sizeof(u32)) |
106 | u32 history[ROLLOVER_HLEN] ____cacheline_aligned; | |
0648ab70 WB |
107 | } ____cacheline_aligned_in_smp; |
108 | ||
2787b04b PE |
109 | struct packet_sock { |
110 | /* struct sock has to be the first member of packet_sock */ | |
111 | struct sock sk; | |
112 | struct packet_fanout *fanout; | |
ee80fbf3 | 113 | union tpacket_stats_u stats; |
2787b04b PE |
114 | struct packet_ring_buffer rx_ring; |
115 | struct packet_ring_buffer tx_ring; | |
116 | int copy_thresh; | |
117 | spinlock_t bind_lock; | |
118 | struct mutex pg_vec_lock; | |
ee5675ec | 119 | unsigned long flags; |
2787b04b | 120 | int ifindex; /* bound device */ |
dfc39d40 | 121 | u8 vnet_hdr_sz; |
2787b04b | 122 | __be16 num; |
0648ab70 | 123 | struct packet_rollover *rollover; |
2787b04b | 124 | struct packet_mclist *mclist; |
db3fadac | 125 | atomic_long_t mapped; |
2787b04b PE |
126 | enum tpacket_versions tp_version; |
127 | unsigned int tp_hdrlen; | |
128 | unsigned int tp_reserve; | |
2787b04b | 129 | unsigned int tp_tstamp; |
89ed5b51 | 130 | struct completion skb_completion; |
e40526cb | 131 | struct net_device __rcu *cached_dev; |
2787b04b | 132 | struct packet_type prot_hook ____cacheline_aligned_in_smp; |
8e8e2951 | 133 | atomic_t tp_drops ____cacheline_aligned_in_smp; |
2787b04b PE |
134 | }; |
135 | ||
68ac9a8b | 136 | #define pkt_sk(ptr) container_of_const(ptr, struct packet_sock, sk) |
2787b04b | 137 | |
ee5675ec ED |
138 | enum packet_sock_flags { |
139 | PACKET_SOCK_ORIGDEV, | |
fd53c297 | 140 | PACKET_SOCK_AUXDATA, |
74383446 | 141 | PACKET_SOCK_TX_HAS_OFF, |
164bddac | 142 | PACKET_SOCK_TP_LOSS, |
61edf479 | 143 | PACKET_SOCK_RUNNING, |
791a3e9f | 144 | PACKET_SOCK_PRESSURE, |
105a201e | 145 | PACKET_SOCK_QDISC_BYPASS, |
ee5675ec ED |
146 | }; |
147 | ||
148 | static inline void packet_sock_flag_set(struct packet_sock *po, | |
149 | enum packet_sock_flags flag, | |
150 | bool val) | |
151 | { | |
152 | if (val) | |
153 | set_bit(flag, &po->flags); | |
154 | else | |
155 | clear_bit(flag, &po->flags); | |
156 | } | |
157 | ||
158 | static inline bool packet_sock_flag(const struct packet_sock *po, | |
159 | enum packet_sock_flags flag) | |
160 | { | |
161 | return test_bit(flag, &po->flags); | |
162 | } | |
163 | ||
2787b04b | 164 | #endif |