STRUCT SK_BUFF

NAME

SYNOPSIS

struct sk_buff {
  struct sk_buff * next;
  struct sk_buff * prev;
  ktime_t tstamp;
  struct sock * sk;
  struct net_device * dev;
  char cb[48];
  unsigned long _skb_refdst;
#ifdef CONFIG_XFRM
  struct sec_path * sp;
#endif
  unsigned int len;
  unsigned int data_len;
  __u16 mac_len;
  __u16 hdr_len;
  union {unnamed_union};
  __u16 vlan_tci;
  sk_buff_data_t transport_header;
  sk_buff_data_t network_header;
  sk_buff_data_t mac_header;
  sk_buff_data_t tail;
  sk_buff_data_t end;
  unsigned char * head;
  unsigned char * data;
  unsigned int truesize;
  atomic_t users;
};  

MEMBERS

next

Next buffer in list

prev

Previous buffer in list

tstamp

Time we arrived

sk

Socket we are owned by

dev

Device we arrived on/are leaving by

cb[48]

Control buffer. Free for use by every layer. Put private vars here

_skb_refdst

destination entry (with norefcount bit)

sp

the security path, used for xfrm

len

Length of actual data

data_len

Data length

mac_len

Length of link layer header

hdr_len

writable header length of cloned skb

{unnamed_union}

anonymous

vlan_tci

vlan tag control information

transport_header

Transport layer header

network_header

Network layer header

mac_header

Link layer header

tail

Tail pointer

end

End pointer

head

Head of buffer

data

Data head pointer

truesize

Buffer size

users

User count - see {datagram,tcp}.c

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