[dpdk-users] Question about range type of DPDK ACL

[Shyam Shrivastav]

I haven't used range type with 32 bit integers yet ...
Just some theory in case if you haven't already taken into account,  if
little-endian host 10.10.10.30 actually means 0x1e0a0a0a for acl match,
dotted decimal is in big endian so when in little endian host you need to
add it other way round as integers for matching. This means if you add
range 0x0a0a0a0a to 0x1e1e1e1e should match 10.10.10.30,  this is my
understanding theoretically ..

On Wed, Jun 21, 2017 at 4:54 PM, Doohwan Lee <letsme at gmail.com> wrote:

> Yes. you are right. I also already knew that 32bit match with mask type
> works well.
> My point is 32bit match with 'range type' doesn't work in some case.
>
>
> On Wed, Jun 21, 2017 at 6:46 PM, Anupam Kapoor <anupam.kapoor at gmail.com>
> wrote:
>
>>
>> On Wed, Jun 21, 2017 at 11:36 AM, Doohwan Lee <letsme at gmail.com> wrote:
>>
>>> DPDK ACL library uses multi-bit trie with 8-bit stride.
>>> I guess that implementation of the trie doesn't support 32bit range
>>> matching.
>>>
>>
>> ​well, you _can_ have address wildcard matches e.g. an address+mask
>> combination of 1.2.3.0/24 would match all addresses 1.2.3.[0..255]
>>
>> ​--
>> kind regards
>> anupam​
>>
>> In the beginning was the lambda, and the lambda was with Emacs, and Emacs
>> was the lambda.
>>
>
>