Does ConnectX-5 support mac ctrl frames (pause frames) forward to host?

Infrastructure & Networking Software And Drivers SoC And SmartNIC
1

Does ConnectX-5 support forwarding of MAC ctrl frames (pause frames) to host?

mac_ctrl_frame_fwd in struct rte_eth_fc_conf (DPDK)

2

It would be not. below are all supported feature.

https://doc.dpdk.org/guides/nics/mlx5.html#supported-nics

3

Is there any way (apart from DPDK) to pass through MAC control frames (pause frames) to the application?