• Jarno Rajahalme's avatar
    openvswitch: TCP flags matching support. · 5eb26b15
    Jarno Rajahalme authored
        tcp_flags=flags/mask
            Bitwise  match on TCP flags.  The flags and mask are 16-bit num‐
            bers written in decimal or in hexadecimal prefixed by 0x.   Each
            1-bit  in  mask requires that the corresponding bit in port must
            match.  Each 0-bit in mask causes the corresponding  bit  to  be
            ignored.
    
            TCP  protocol  currently  defines  9 flag bits, and additional 3
            bits are reserved (must be transmitted as zero), see  RFCs  793,
            3168, and 3540.  The flag bits are, numbering from the least
            significant bit:
    
            0: FIN No more data from sender.
    
            1: SYN Synchronize sequence numbers.
    
            2: RST Reset the connection.
    
            3: PSH Push function.
    
            4: ACK Acknowledgement field significant.
    
            5: URG Urgent pointer field significant.
    
            6: ECE ECN Echo.
    
            7: CWR Congestion Windows Reduced.
    
            8: NS  Nonce Sum.
    
            9-11:  Reserved.
    
            12-15: Not matchable, must be zero.
    Signed-off-by: default avatarJarno Rajahalme <jrajahalme@nicira.com>
    Signed-off-by: default avatarJesse Gross <jesse@nicira.com>
    5eb26b15
flow.h 5.25 KB