On 7/2/20 2:18 PM, Magnus Karlsson wrote:
This patch set adds support to share a umem between AF_XDP sockets bound to different queue ids on the same device or even between devices. It has already been possible to do this by registering the umem multiple times, but this wastes a lot of memory. Just imagine having 10 threads each having 10 sockets open sharing a single umem. This means that you would have to register the umem 100 times consuming large quantities of memory.
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Note to Maxim at Mellanox. I do not have a mlx5 card, so I have not been able to test the changes to your driver. It compiles, but that is all I can say, so it would be great if you could test it. Also, I did change the name of many functions and variables from umem to pool as a buffer pool is passed down to the driver in this patch set instead of the umem. I did not change the name of the files umem.c and umem.h. Please go through the changes and change things to your liking.
Bjorn / Maxim, this is waiting on review (& mlx5 testing) from you, ptal. Thanks, Daniel
