udp_prot

{
.type =       SOCK_DGRAM,
.protocol =   IPPROTO_UDP,
.prot =       &udp_prot,
.ops =        &inet_dgram_ops,
.flags =      INET_PROTOSW_PERMANENT,

       },

struct proto udp_prot = {
.name   = "UDP",
.owner   = THIS_MODULE,
.close   = udp_lib_close,
.connect   = ip4_datagram_connect,
.disconnect   = udp_disconnect,
.ioctl   = udp_ioctl,
.destroy   = udp_destroy_sock,
.setsockopt   = udp_setsockopt,
.getsockopt   = udp_getsockopt,
.sendmsg   = udp_sendmsg,
.recvmsg   = udp_recvmsg,
.sendpage   = udp_sendpage,
.backlog_rcv   = __udp_queue_rcv_skb,
.release_cb   = ip4_datagram_release_cb,
.hash   = udp_lib_hash,
.unhash   = udp_lib_unhash,
.rehash   = udp_v4_rehash,
.get_port   = udp_v4_get_port,
.memory_allocated  = &udp_memory_allocated,
.sysctl_mem   = sysctl_udp_mem,
.sysctl_wmem   = &sysctl_udp_wmem_min,
.sysctl_rmem   = &sysctl_udp_rmem_min,
.obj_size   = sizeof(struct udp_sock),
.slab_flags   = SLAB_DESTROY_BY_RCU,
.h.udp_table   = &udp_table,
#ifdef CONFIG_COMPAT
.compat_setsockopt = compat_udp_setsockopt,
.compat_getsockopt = compat_udp_getsockopt,
#endif
.clear_sk   = sk_prot_clear_portaddr_nulls,
};