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kfree_skb(9) [centos man page]

KFREE_SKB(9)							 Linux Networking						      KFREE_SKB(9)

NAME
kfree_skb - free an sk_buff SYNOPSIS
void kfree_skb(struct sk_buff * skb); ARGUMENTS
skb buffer to free DESCRIPTION
Drop a reference to the buffer and free it if the usage count has hit zero. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 KFREE_SKB(9)

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STRUCT 
SK_BUFF(9) Linux Networking STRUCT SK_BUFF(9) NAME
struct_sk_buff - socket buffer 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_dst; #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_dst destination entry 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 COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 STRUCT SK_BUFF(9)

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