SUNRPC: Don't auto-disconnect from the local rpcbind socket
[linux-3.10.git] / net / packet / internal.h
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
58         unsigned int            head;
59         unsigned int            frames_per_block;
60         unsigned int            frame_size;
61         unsigned int            frame_max;
62
63         unsigned int            pg_vec_order;
64         unsigned int            pg_vec_pages;
65         unsigned int            pg_vec_len;
66
67         atomic_t                pending;
68
69         struct tpacket_kbdq_core        prb_bdqc;
70 };
71
72 extern struct mutex fanout_mutex;
73 #define PACKET_FANOUT_MAX       256
74
75 struct packet_fanout {
76 #ifdef CONFIG_NET_NS
77         struct net              *net;
78 #endif
79         unsigned int            num_members;
80         u16                     id;
81         u8                      type;
82         u8                      flags;
83         atomic_t                rr_cur;
84         struct list_head        list;
85         struct sock             *arr[PACKET_FANOUT_MAX];
86         int                     next[PACKET_FANOUT_MAX];
87         spinlock_t              lock;
88         atomic_t                sk_ref;
89         struct packet_type      prot_hook ____cacheline_aligned_in_smp;
90 };
91
92 struct packet_sock {
93         /* struct sock has to be the first member of packet_sock */
94         struct sock             sk;
95         struct packet_fanout    *fanout;
96         union  tpacket_stats_u  stats;
97         struct packet_ring_buffer       rx_ring;
98         struct packet_ring_buffer       tx_ring;
99         int                     copy_thresh;
100         spinlock_t              bind_lock;
101         struct mutex            pg_vec_lock;
102         unsigned int            running:1,      /* prot_hook is attached*/
103                                 auxdata:1,
104                                 origdev:1,
105                                 has_vnet_hdr:1;
106         int                     ifindex;        /* bound device         */
107         __be16                  num;
108         struct packet_mclist    *mclist;
109         atomic_t                mapped;
110         enum tpacket_versions   tp_version;
111         unsigned int            tp_hdrlen;
112         unsigned int            tp_reserve;
113         unsigned int            tp_loss:1;
114         unsigned int            tp_tx_has_off:1;
115         unsigned int            tp_tstamp;
116         struct packet_type      prot_hook ____cacheline_aligned_in_smp;
117 };
118
119 static struct packet_sock *pkt_sk(struct sock *sk)
120 {
121         return (struct packet_sock *)sk;
122 }
123
124 #endif