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struct_sk_buff
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
struct_sk_buff - socket bufferSYNOPSIS
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struct sk_buff { struct sk_buff * next; struct sk_buff * prev; struct sock * sk; ktime_t tstamp; struct net_device * dev; union {unnamed_union}; struct sec_path * sp; char cb[48]; unsigned int len; unsigned int data_len; __u16 mac_len; __u16 hdr_len; union {unnamed_union}; __u32 priority; __u8 local_df:1; __u8 cloned:1; __u8 ip_summed:2; __u8 nohdr:1; __u8 nfctinfo:3; __u8 pkt_type:3; __u8 fclone:2; __u8 ipvs_property:1; __u8 peeked:1; __u8 nf_trace:1; __be16 protocol; void (* destructor) (struct sk_buff *skb); #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) struct nf_conntrack * nfct; struct sk_buff * nfct_reasm; #endif #ifdef CONFIG_BRIDGE_NETFILTER struct nf_bridge_info * nf_bridge; #endif int iif; #ifdef CONFIG_NETDEVICES_MULTIQUEUE __u16 queue_mapping; #endif #ifdef CONFIG_NET_SCHED __u16 tc_index; #ifdef CONFIG_NET_CLS_ACT __u16 tc_verd; #endif #endif #ifdef CONFIG_IPV6_NDISC_NODETYPE __u8 ndisc_nodetype:2; #endif #ifdef CONFIG_NET_DMA dma_cookie_t dma_cookie; #endif #ifdef CONFIG_NETWORK_SECMARK __u32 secmark; #endif __u32 mark; 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
sk
- Socket we are owned by
tstamp
- Time we arrived
dev
- Device we arrived on/are leaving by
{unnamed_union}
- anonymous
sp
- the security path, used for xfrm
cb[48]
- Control buffer. Free for use by every layer. Put private vars here
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
priority
- Packet queueing priority
local_df
- allow local fragmentation
cloned
- Head may be cloned (check refcnt to be sure)
ip_summed
- Driver fed us an IP checksum
nohdr
- Payload reference only, must not modify header
nfctinfo
- Relationship of this skb to the connection
pkt_type
- Packet class
fclone
- skbuff clone status
ipvs_property
- skbuff is owned by ipvs
peeked
- this packet has been seen already, so stats have been done for it, don't do them again
nf_trace
- netfilter packet trace flag
protocol
- Packet protocol from driver
destructor
- Destruct function
nfct
- Associated connection, if any
nfct_reasm
- netfilter conntrack re-assembly pointer
nf_bridge
- Saved data about a bridged frame - see br_netfilter.c
iif
- ifindex of device we arrived on
queue_mapping
- Queue mapping for multiqueue devices
tc_index
- Traffic control index
tc_verd
- traffic control verdict
ndisc_nodetype
- router type (from link layer)
dma_cookie
- a cookie to one of several possible DMA operations done by skb DMA functions
secmark
- security marking
mark
- Generic packet mark
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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Contenus ©2006-2024 Benjamin Poulain
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