DPDK 21.11 rte_eth_dev_configure failing for X722 NIC - build

Question

While upgrading DPDK from version 17.02 to 21.11 rte_eth_dev_configure is failing with return code -22. Due to that, my application is not working.
PFB the details about the system.
Using Intel Corporation Ethernet Connection X722.
lspci | grep "Ethernet"
3d:00.0 Ethernet controller: Intel Corporation Ethernet Connection X722 for 10GBASE-T (rev 09)
3d:00.1 Ethernet controller: Intel Corporation Ethernet Connection X722 for 10GBASE-T (rev 09)
af:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
Driver used :
ethtool -i eth0
driver: i40e
version: 2.7.29
firmware-version: 3.31 0x80000d31 1.1767.0
expansion-rom-version:
bus-info: 0000:3d:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes
Number of RX queues : 4
enabled log using --log-level=pmd,8 , PFB the dpdk.log output.
"[Wed Jan 11 04:00:34 2023][ms_dpi: 1150] Starting DPDK logging
session EAL: Detected CPU lcores: 40 EAL: Detected NUMA nodes: 1 EAL:
Static memory layout is selected, amount of reserved memory can be
adjusted with -m or --socket-mem EAL: Detected shared linkage of DPDK
EAL: Trace dir: /root/dpdk-traces/rte-2023-01-11-AM-04-00-34 EAL:
Multi-process socket /var/run/dpdk/rte/mp_socket EAL: Selected IOVA
mode 'PA' EAL: NUMA support not available consider that all memory is
in socket_id 0 EAL: Probe PCI driver: net_i40e (8086:37d2) device:
0000:3d:00.1 (socket 0) eth_i40e_dev_init(): >> i40e_pf_reset(): Core
and Global modules ready 0 i40e_init_shared_code():
i40e_init_shared_code i40e_set_mac_type(): i40e_set_mac_type
i40e_set_mac_type(): i40e_set_mac_type found mac: 3, returns: 0
i40e_init_nvm(): i40e_init_nvm i40e_allocate_dma_mem_d(): memzone
i40e_dma_0 allocated with physical address: 65496862720"
The application was working fine with DPDK version 17.02. Is there any change with respect to the i40e driver which is causing this issue? All libraries needed to build the application are present in the system like -Wl,-lrte_net_enic -Wl,-lrte_net_i40e.
Did anybody face the same issue with provided configuration?
I am not able to figure out the root cause of this error. Any help is appreciated. Thanks

Answer 1

Issue has been resolved. Application code was earlier using eth_config.rx_adv_conf.rss_conf.rss_hf = 260 (RTE_ETH_RSS_IPV4 | RTE_ETH_RSS_IPV6).
After running the testpmd with same configuration (rx queues = 4 and tx queue = 1) got to know the supported RSS offload attributes.
Output of the testpmd command shows supported offload flags.
testpmd> show port 0 rss-hash
RSS functions:
ipv4-frag ipv4-other ipv6-frag ipv6-other
testpmd> quit
Supported offload attributes by i40e driver.
#define I40E_RSS_OFFLOAD_ALL ( \
RTE_ETH_RSS_FRAG_IPV4 | \
RTE_ETH_RSS_NONFRAG_IPV4_TCP | \
RTE_ETH_RSS_NONFRAG_IPV4_UDP | \
RTE_ETH_RSS_NONFRAG_IPV4_SCTP | \
RTE_ETH_RSS_NONFRAG_IPV4_OTHER | \
RTE_ETH_RSS_FRAG_IPV6 | \
RTE_ETH_RSS_NONFRAG_IPV6_TCP | \
RTE_ETH_RSS_NONFRAG_IPV6_UDP | \
RTE_ETH_RSS_NONFRAG_IPV6_SCTP | \
RTE_ETH_RSS_NONFRAG_IPV6_OTHER | \
RTE_ETH_RSS_L2_PAYLOAD)
eth_config.rx_adv_conf.rss_conf.rss_hf = 840 (RTE_ETH_RSS_FRAG_IPV4| RTE_ETH_RSS_NONFRAG_IPV4_OTHER|RTE_ETH_RSS_FRAG_IPV6 |RTE_ETH_RSS_NONFRAG_IPV6_OTHER)
After providing the right hash value. Application started running fine.