Hi all,
I have been tasked to port the NoviFlow experimenters to ODL.
I have found the extensions in the openflowplugin. There are examples
for Nicera, which I can use to understand how it work. However, we need to
define «dynamic» oxm. By «dynamic», I mean the OXM contains a variable length
depending on the number of same data in it.
Here is an example:
struct oxm_fields {
uint16_t oxm_class; /* Match class OFPXMC_EXPERIMENTER 0xffff */
uint oxm_field:7; /* Match field within the class NOVI_MATCH_UDP_PAYLOAD
0b0000001 */
uint oxm_hasmask:1; /* Set if OXM includes a bitmask in payload (wildcard match
tables only) */
uint8_t oxm_length; /* Length of OXM payload */
uint32_t experimenter; /* NoviFlow experimenter ID 0xff000002 */
uint8_t payload[1-32] /* 1-32 payload bytes to be matched on*/
uint8_t mask [0-32] /* Optional mask present if oxm_hasmask bit is set in the
header */
};
Like in this OXM, the payload and mask size depends on oxm_length for the
number of items and oxm_hasmask to know if there is a mask (if the mask is
there the length is split between the payload and the mask).
I did not find an existing example of this kind in the extension (if I missed
one please let me know). Is it possible to model this in YANG to have this kind
of message?
Thank You,
Yann Bourdeau, M.Ing.
Senior Software Developer
438-499-4607
[email protected]
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