On Wed,  1 Jan 2025 15:07:35 +0530
Kumara Parameshwaran <kumaraparamesh92@gmail.com> wrote:

> From: Kumara Parameshwaran <kumaraparamesh92@gmail.com>
> To: hujiayu.hu@foxmail.com
> Cc: dev@dpdk.org,  Kumara Parameshwaran <kumaraparamesh92@gmail.com>
> Subject: [PATCH] lib/gro: use hash function for flow lookup
> Date: Wed,  1 Jan 2025 15:07:35 +0530
> X-Mailer: git-send-email 2.47.1
>
> optimize the GRO lookup using hash based
> implementation
>
> Signed-off-by: Kumara Parameshwaran <kumaraparamesh92@gmail.com>

Rather than open coding a hash table with collision chains, please use the
existing DPDK cuckoo hash which is faster and you can also prevent hash
DoS chain attacks.

http://dpdk.org/patch/158636 @Stephen Hemminger  - Please find the link to the patch. This is sample implementation with test. Please let me know if it looks fine, would add more test cases. 

Alternatively, use a better hash function such as siphash which is resistent
to DoS attacks.