LayerscapeのトピックRe: What is the difference between FBPR pool and a Buffer pool?

What is the difference between FBPR pool and a Buffer pool?

yaronalterman — Wed, 08 Nov 2017 14:03:11 GMT

I guess the main question is what is FBPR and how is it connected to buffer pools?

Thanks in advance.

Re: What is the difference between FBPR pool and a Buffer pool?

r8070z — Wed, 08 Nov 2017 14:34:11 GMT

Have a great day,

If you mean the buffer pool of the DPAA BMAN then FBPR (free buffer proxy record ) is a 64-byte data structure internal to the BMan that stores buffer pointers in the BMan’s external memory space in a singly-linked list.

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Re: What is the difference between FBPR pool and a Buffer pool?

yaronalterman — Thu, 09 Nov 2017 07:14:05 GMT

Thanks.

Yes I am talking about the DPAA BMan, forgot to mention that sorry.

I see in the LS1046 DPAA reference manutal that there's a linked list for a "FBPR pool" and other lists called "Buffer pointer pools 0 to N" (Figure 4-1, p.4-3)

The question is what is the function of each type of pool?

Re: What is the difference between FBPR pool and a Buffer pool?

yaronalterman — Thu, 09 Nov 2017 07:19:35 GMT

Ok, I think I've got it. There's one list for free buffer pointers that's the "FBPR pool", and another N linked lists, one for each pool of allocated buffers, is that correct?