R | Linux Network Architecture

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UDP [See User Datagram Protocol (UDP)]
udp_gerfrag()
udp_mcast_deliver()
udp_rcv()
udp_recvmsg()
udp_sendmsg()
udpfakehdr strcuture
udphdr strcuture
UKA APIC timer, module
UKA-APIC timer 2nd
     functionality of
UMTS
unbind_tcf() function
Unicast
Unicast communication
Uniform Reliable Group Communication Protocol (URGC)
UNIX standard software, using under Linux
unregister_functionality()
unregister_netdevice()
Unreliable datagram service (LLC type 1)
User Datagram Protocol (UDP) 2nd 3rd 4th
     data structures
     defined
     integration into network architecture
         interface to IP
         interface to the application layer
     packet format
         Checksum field
         Destination port field
         Length field
         Source port field
     passing the payload
         msghdr structure
     receiving UDP datagrams
         udp_mcast_deliver()
         udp_rcv()
         udp_recvmsg()
     sending UDP datagrams
         udp_getfrag()
         udp_sendmsg()
     UDP datagrams
     udpfakehdr structure
     udphdr structure
User kernels