7. The method of claim 1 , further comprising processing, by said VMI FSM, a packet header token using an input/output (I/O) protocol on an adapter specified by an InfiniBand architecture, wherein said processing said packet header token includes: a port receiving a data packet that includes a payload and a packet header; storing said payload in a payload buffer; inserting said packet header in a second field of said packet header token, wherein said packet header token is said first input token, and wherein said second field of said packet header token is said second field of said first input token; extracting a queue pair (QP) number from said packet header, wherein said QP number identifies a QP that specifies a network connection in said InfiniBand architecture; storing said QP number in a first field of said packet header token, wherein said first field of said packet header token is said first field of said first input token, wherein said receiving said first input token includes receiving said packet header token from said port and at said VMI FSM.
7. The method of claim 1 , further comprising processing, by said VMI FSM, a packet header token using an input/output (I/O) protocol on an adapter specified by an InfiniBand architecture, wherein said processing said packet header token includes: a port receiving a data packet that includes a payload and a packet header; storing said payload in a payload buffer; inserting said packet header in a second field of said packet header token, wherein said packet header token is said first input token, and wherein said second field of said packet header token is said second field of said first input token; extracting a queue pair (QP) number from said packet header, wherein said QP number identifies a QP that specifies a network connection in said InfiniBand architecture; storing said QP number in a first field of said packet header token, wherein said first field of said packet header token is said first field of said first input token, wherein said receiving said first input token includes receiving said packet header token from said port and at said VMI FSM. 8. The method of claim 7 , further comprising: determining a transport mode of said network connection specified by said QP is a reliable connect transport mode (RC) or a reliable datagram transport mode (RD); determining a packet sequence number (PSN) included in said packet header token is equal to an expected PSN (ePSN) included in said fetched context; and in response to said determining said transport mode of said QP is said RC or said RD and in response to said determining said PSN is equal to said ePSN, sending an acknowledgment to said port.