1STRUCT SK_BUFF(9)              Linux Networking              STRUCT SK_BUFF(9)
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NAME

6       struct_sk_buff - socket buffer
7

SYNOPSIS

9       struct sk_buff {
10         struct sk_buff * next;
11         struct sk_buff * prev;
12         ktime_t tstamp;
13         struct sock * sk;
14         struct net_device * dev;
15         char cb[48];
16         unsigned long _skb_refdst;
17       #ifdef CONFIG_XFRM
18         struct sec_path * sp;
19       #endif
20         unsigned int len;
21         unsigned int data_len;
22         __u16 mac_len;
23         __u16 hdr_len;
24         union {unnamed_union};
25         __u16 vlan_tci;
26         sk_buff_data_t transport_header;
27         sk_buff_data_t network_header;
28         sk_buff_data_t mac_header;
29         sk_buff_data_t tail;
30         sk_buff_data_t end;
31         unsigned char * head;
32         unsigned char * data;
33         unsigned int truesize;
34         atomic_t users;
35       };
36

MEMBERS

38       next
39           Next buffer in list
40
41       prev
42           Previous buffer in list
43
44       tstamp
45           Time we arrived
46
47       sk
48           Socket we are owned by
49
50       dev
51           Device we arrived on/are leaving by
52
53       cb[48]
54           Control buffer. Free for use by every layer. Put private vars here
55
56       _skb_refdst
57           destination entry (with norefcount bit)
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59       sp
60           the security path, used for xfrm
61
62       len
63           Length of actual data
64
65       data_len
66           Data length
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68       mac_len
69           Length of link layer header
70
71       hdr_len
72           writable header length of cloned skb
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74       {unnamed_union}
75           anonymous
76
77       vlan_tci
78           vlan tag control information
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80       transport_header
81           Transport layer header
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83       network_header
84           Network layer header
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86       mac_header
87           Link layer header
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89       tail
90           Tail pointer
91
92       end
93           End pointer
94
95       head
96           Head of buffer
97
98       data
99           Data head pointer
100
101       truesize
102           Buffer size
103
104       users
105           User count - see {datagram,tcp}.c
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108Kernel Hackers Manual 2.6.       November 2011               STRUCT SK_BUFF(9)
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