The device supports calculation of checksum on transmitted packets and validation of received packets checksum. The adapter device offloads IPv4 checksum (L3) and TCP/UDP checksum (L4). 

Checksum calculation is supported for TCP/UDP running over IPv4 and IPv6. 

Checksum Offload Experimental Verbs

• ibv_exp_post_send
  • IBV_EXP_SEND_IP_CSUM

Checksum Offload Experimental Capabilities

• IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT
• IBV_EXP_DEVICE_RX_CSUM_IP_PKT
• IBV_EXP_SW_PARSING_CSUM

Checksum Offload RDMA-Core Verbs

• ibv_post_send
  • IBV_SEND_IP_CSUM
• ibv_query_device_ex
  • IBV_RAW_PACKET_CAP_IP_CSUM
• ibv_wr_post
  • IBV_SEND_IP_CSUM

Checksum Offload RDMA-Core Experimental Capabilities

• IBV_DEVICE_UD_IP_CSUM
• IBV_DEVICE_RC_IP_CSUM
• IBV_DEVICE_RAW_IP_CSUM