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STRUCT SOCK_COMMON(9) Linux Networking STRUCT SOCK_COMMON(9)

NAME

struct_sock_common - minimal network layer representation of sockets

SYNOPSIS

struct sock_common {


  union {unnamed_union};


  atomic_t skc_refcnt;


  unsigned int skc_hash;


  unsigned short skc_family;


  volatile unsigned char skc_state;
#ifndef __GENKSYMS__


  unsigned char skc_reuse;


  unsigned char skc_reuseport:4;
#else


  unsigned char skc_reuse;
#endif


  int skc_bound_dev_if;


  struct hlist_node skc_bind_node;


  struct proto * skc_prot;
#ifdef CONFIG_NET_NS


  struct net * skc_net;
#endif
};

MEMBERS

{unnamed_union}

anonymous

skc_refcnt

reference count

skc_hash

hash value used with various protocol lookup tables

skc_family

network address family

skc_state

Connection state

skc_reuse

SO_REUSEADDR setting

skc_reuseport

SO_REUSEPORT setting

skc_reuse

SO_REUSEADDR setting

skc_bound_dev_if

bound device index if != 0

skc_bind_node

bind hash linkage for various protocol lookup tables

skc_prot

protocol handlers inside a network family

skc_net

reference to the network namespace of this socket

DESCRIPTION

This is the minimal network layer representation of sockets, the header for struct sock and struct inet_timewait_sock.

COPYRIGHT

April 2023 Kernel Hackers Manual 2.6.