Hi Yaron,
On 09/01/2022 13:20, Yaron Illouz wrote:
I am using Mellanox Technologies MT27800 Family [ConnectX-5], using dpdk
19 with multi rx queue with rss
port_conf.rx_adv_conf.rss_conf.rss_hf=(ETH_RSS_IP | ETH_RSS_UDP |
ETH_RSS_TCP)
I analyze traffic and need all packet of same session to arrive to the
same process ( session for now can be ip+port)
So Packet that have the same ip + port arrive to the same queue.
But If some packet are ip fragmented, packet arrive to different
process. It is a problem!
How can i calculate the hash value in the c++ code, like it is done in
the card, so i can reassemble packets and send them to the same process
like the non fragmented packets?
I think you need rte_softrss/rte_thash_gfni() , details could be found here:
https://doc.dpdk.org/guides/prog_guide/toeplitz_hash_lib.html
Or as an alternative option you can configure your NIC hash function to
calculate the hash on L3 fields only.
--
Regards,
Vladimir
