Subversion Repositories configs

#
# Location definitions for packet matching
#

# name          alignment       offset          mask            shift
ip.version      u8              net+0           0xF0            4
ip.hdrlen       u8              net+0           0x0F
ip.diffserv     u8              net+1
ip.length       u16             net+2
ip.id           u16             net+4
ip.flag.res     u8              net+6           0xff            7
ip.df           u8              net+6           0x40            6
ip.mf           u8              net+6           0x20            5
ip.offset       u16             net+6           0x1FFF
ip.ttl          u8              net+8
ip.proto        u8              net+9
ip.chksum       u16             net+10
ip.src          u32             net+12
ip.dst          u32             net+16

# if ip.ihl > 5
ip.opts         u32             net+20


#
# IP version 6
#
# name          alignment       offset          mask            shift
ip6.version     u8              net+0           0xF0            4
ip6.tc          u16             net+0           0xFF0           4
ip6.flowlabel   u32             net+0           0xFFFFF
ip6.length      u16             net+4
ip6.nexthdr     u8              net+6
ip6.hoplimit    u8              net+7
ip6.src         16              net+8
ip6.dst         16              net+24

#
# Transmission Control Protocol (TCP)
#
# name          alignment       offset          mask            shift
tcp.sport       u16             tcp+0
tcp.dport       u16             tcp+2
tcp.seq         u32             tcp+4
tcp.ack         u32             tcp+8

# Data offset (4 bits)
tcp.off         u8              tcp+12          0xF0            4

# Reserved [0 0 0] (3 bits)
tcp.reserved    u8              tcp+12          0x04            1

# ECN [N C E] (3 bits)
tcp.ecn         u16             tcp+12          0x01C00         6

# Individual TCP flags (0|1) (6 bits in total)
tcp.flag.urg    u8              tcp+13          0x20            5
tcp.flag.ack    u8              tcp+13          0x10            4
tcp.flag.psh    u8              tcp+13          0x08            3
tcp.flag.rst    u8              tcp+13          0x04            2
tcp.flag.syn    u8              tcp+13          0x02            1
tcp.flag.fin    u8              tcp+13          0x01

tcp.win         u16             tcp+14
tcp.csum        u16             tcp+16
tcp.urg         u16             tcp+18
tcp.opts        u32             tcp+20

#
# User Datagram Protocol (UDP)
#
# name          alignment       offset          mask            shift
udp.sport       u16             tcp+0
udp.dport       u16             tcp+2
udp.length      u16             tcp+4
udp.csum        u16             tcp+6