Hi:

I am using Intel SR-IOV XL710 VF with DPDK v20.11 to create a dpdkbond but failed.

         As the picture shows, when dpdk bond start and slave link up, it triggers lsc callback function which registers in the eal thread, and then in the activate_slave process,

i40evf send msg 14 to pf to config promisc, but there is no response received. Because function “i40evf_handle_aq_msg” in which vf receives response from pf

is in the same thread of eal with function “_i40evf_execute_vf_cmd” in which vf sends msg to pf. Thus, when eal thread goes in function _i40evf_execute_vf_cmd,

it can’t handle msg from pf at the same time, then it will report “No response for 14” in dpdk log.

And there are the error logs in dpdk:

2021-10-11T11:03:32.812516+08:00|info|ovs-vswitchd[1721043]|EAL: [eth_dev_ops] Slave 1: set mtu: 9058 .

2021-10-11T11:03:32.822434+08:00|info|ovs-vswitchd[1721043]|EAL: [eth_dev_ops] Slave 1: dev configure succeed.

2021-10-11T11:03:33.022426+08:00|info|ovs-vswitchd[1721043]|EAL: LSC CALLBACK: slave 0000:87:02.0 links up

2021-10-11T11:03:33.022455+08:00|info|ovs-vswitchd[1721043]|PMD: Slave 1: lacp_rate has been set to slow.

2021-10-11T11:03:35.034445+08:00|warning|ovs-vswitchd[1721043]|_i40evf_execute_vf_cmd(): No response for 14

2021-10-11T11:03:35.034628+08:00|err|ovs-vswitchd[1721043]|i40evf_config_promisc(): fail to execute command CONFIG_PROMISCUOUS_MODE

2021-10-11T11:03:35.034657+08:00|info|ovs-vswitchd[1721043]|EAL: [eth_dev_ops] Slave 1: enable allmulticast.

2021-10-11T11:03:35.034680+08:00|err|ovs-vswitchd[1721043]|bond_mode_8023ad_register_lacp_mac(1250) - failed to enable allmulti mode for port 1: Resource temporarily unavailable

2021-10-11T11:03:35.034702+08:00|debug|ovs-vswitchd[1721043]|bond_mode_8023ad_register_lacp_mac(1266) - forced promiscuous for port 1

2021-10-11T11:03:35.034725+08:00|info|ovs-vswitchd[1721043]|EAL: [eth_dev_ops] Slave 1 (net_bonding_trunk1): Configuring and applying resources successed.

2021-10-11T11:03:35.034746+08:00|info|ovs-vswitchd[1721043]|EAL: [eth_dev_ops] slave 1 (net_bonding_trunk1) activate.

2021-10-11T11:03:35.034771+08:00|debug|ovs-vswitchd[1721043]|     0 [Port 1: rx_machine] -> INITIALIZE

2021-10-11T11:03:35.034794+08:00|debug|ovs-vswitchd[1721043]|     0 [Port 1: mux_machine] -> DETACHED

2021-10-11T11:03:35.084534+08:00|err|ovs-vswitchd[1721043]|i40evf_handle_aq_msg(): command mismatch,expect 8, get 14

2021-10-11T11:03:35.134545+08:00|debug|ovs-vswitchd[1721043]|   100 [Port 1: mux_machine] DETACHED -> WAITING

2021-10-11T11:03:35.544648+08:00|info|ovs-vswitchd[1721043]|EAL: [eth_dev_ops] Slave 1: start dev.

How can I solve this problem ?

Thakns for help.

Regards,

Liao