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()) }
v2:
1) Removed cast to (struct proto_field **) in proto_field_func_setup(...)
when add dynamic field to packet_dyn.
2) Fixed order or parameters of dinc(min, max, step) to look like low level
dinc function.
3) Replace ~0 by UINT32_MAX.
4) Calculate new random value in field_rnd_func(...) in 'for' body instead
of increment
statement.
5) Assign 'val' variable on declaration in field_inc_func(...).
6) Simplify & fix value incrementing between specified interval in
field_inc(...).
7) Use local 'max, val, min, inc' variables instead of pointers in
field_inc(...).
8) Add separate commit to add new proto_upper_header(...) function.
9) Add separate commit to use index for get lower/upper header
10) Add new commit to simplify Jasper's UDP example with proto functions.
v3:
1) Add new commit to introduce logic for update proto fields at runtime.
2) Use size_t for fields_count in packet_dyn struct.
3) Get rid of "!!" in packet_dyn_has_fields(...) function.
4) Change "unsigned int" to uint32_t
5) Change signature of (* field_changed) callback in proto_ops struct to
pass
struct proto_field * only.
6) Check first on is_csum_valid in ipv4_csum_update(...) function.
7) Add missed is_csum_valid check in icmpv6_csum_update(...) function.
8) Fixed missed 'field_expr' rule for icmpv4 field
9) Rebased on "proto ops" changes
Vadim Kochan (15):
trafgen: proto: Update field value at runtime
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: proto: Improve to find lower header by index
trafgen: proto: Introduce proto_upper_header() function
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: man: Simplify example of Jasper's UDP packet by proto
functions
trafgen.8 | 49 ++++++-
trafgen.c | 9 ++
trafgen_conf.h | 7 +
trafgen_l3.c | 51 ++++++-
trafgen_l4.c | 107 ++++++++++----
trafgen_parser.y | 423 ++++++++++++++++++++++++++++++++++++-------------------
trafgen_proto.c | 150 ++++++++++++++++++--
trafgen_proto.h | 32 +++++
8 files changed, 631 insertions(+), 197 deletions(-)
--
2.9.2
--
You received this message because you are subscribed to the Google Groups
"netsniff-ng" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to netsniff-ng+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
