Implemented 'dinc' and 'drnd' functions to be used for proto fields,
and generate values at runtime. Parsing of proto field values
for unified to make extending of field functions more easier w/o
copy/paste similar rules for each proto field. Instead of that
the field_expr struct is used to keep specified field and value which
might be a func in the following form:
<proto>(<field>=<func>())
Fields which has dynamic functions are stored in packet_dyn structure and
generated after each packet run. After fields are updated the L3/L4 headers
updates its csum if it is needed.
Changed field lookup logic to make field set/get operations a little bit faster
by
using field id as index in the array, as usually fields are defined regarding
its index.
Example:
{ eth(sa=11:22:33:44:55:66, sa=dinc()), udp(sp=drnd(), dp=drnd()) }
Vadim Kochan (15):
trafgen: Move applying dynamic elements to function
trafgen: proto: Reference to packet from proto_hdr struct
trafgen: proto: Move proto headers into packet
trafgen: proto: Force field id to be index in array
trafgen: proto: Increment proto field at runtime
trafgen: proto: Randomize proto field at runtime
trafgen: ipv4: Update csum at runtime if needed
trafgen: icmpv4: Update csum at runtime if needed
trafgen: icmpv6: Update csum at runtime if needed
trafgen: udp: Update csum at runtime if needed
trafgen: tcp: Update csum at runtime if it needed
trafgen: parser: Unify proto field value parsing
trafgen: parser: Add support of 'dinc' function for proto fields
trafgen: parser: Add 'drnd()' function for proto fields
trafgen: man: Add description for 'dinc' and 'drnd' field functions
trafgen.8 | 34 ++++-
trafgen.c | 34 +++--
trafgen_conf.h | 15 ++
trafgen_l3.c | 51 ++++++-
trafgen_l3.h | 4 +-
trafgen_l4.c | 101 +++++++++----
trafgen_parser.y | 445 +++++++++++++++++++++++++++++++++++++------------------
trafgen_proto.c | 205 ++++++++++++++++++++-----
trafgen_proto.h | 39 +++++
9 files changed, 695 insertions(+), 233 deletions(-)
--
2.6.3
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