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Forum Topic - TCP Traffic Debug: Page 1 of 5 (5 Items)
   
TCP Traffic Debug  
With some assistance from this forum (many thanks) I have been able to port my network driver to run under io-pkt.

I am able to ping the hardware with varying packet sizes, however I am having some trouble getting qconn to work.

The packets reach the hardware, if print the packet received it matches the wireshark (excluding the ethernet header) 
capture and netstat -s reports that the packet has been received, however no response is generated. When I run pidin the
 qconn process is started:

I was wondering if I was missing a configuration step and what steps I could take to determine why the stack does not 
generate a response.

lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33192
        input: 0 packets, 0 bytes
        output: 0 packets, 0 bytes
        inet 127.0.0.1 netmask 0xff000000
fr0: flags=88d3<UP,BROADCAST,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST> mtu 1500
        address: 57:20:48:4f:45:59
        media: Ethernet 10baseT full-duplex (<unknown subtype> full-duplex)
        input: 17 packets, 1150 bytes, 17 multicasts
        output: 6 packets, 412 bytes
        inet 192.168.1.130 -> 192.168.7.255 netmask 0xfffff800 broadcast 192.168.7.255

# netstat -s
tcp:
        0 packets sent
                0 data packets (0 bytes)
                0 data packets (0 bytes) retransmitted
                0 ack-only packets (0 delayed)
                0 URG only packets
                0 window probe packets
                0 window update packets
                0 control packets
                0 send attempts resulted in self-quench
        78 packets received
                0 acks (for 0 bytes)
                0 duplicate acks
                0 acks for unsent data
                0 packets (0 bytes) received in-sequence
                0 completely duplicate packets (0 bytes)
                0 old duplicate packets
                0 packets with some dup. data (0 bytes duped)
                0 out-of-order packets (0 bytes)
                0 packets (0 bytes) of data after window
                0 window probes
                0 window update packets
                0 packets received after close
                0 discarded for bad checksums
                0 discarded for bad header offset fields
                0 discarded because packet too short
        0 connection requests
        0 connection accepts
        0 connections established (including accepts)
        0 connections closed (including 0 drops)
        0 embryonic connections dropped
        0 delayed frees of tcpcb
        0 segments updated rtt (of 0 attempts)
        0 retransmit timeouts
                0 connections dropped by rexmit timeout
        0 persist timeouts (resulting in 0 dropped connections)
        0 keepalive timeouts
                0 keepalive probes sent
                0 connections dropped by keepalive
        0 correct ACK header predictions
        0 correct data packet header predictions
        0 PCB hash misses
        0 dropped due to no socket
        0 connections drained due to memory shortage
        0 PMTUD blackholes detected
        0 bad connection attempts
        0 SYN cache entries added
                0 hash collisions
                0 completed
                0 aborted (no space to build PCB)
                0 timed out
                0 dropped due to overflow
                0 dropped due to bucket overflow
                0 dropped due to RST
                0 dropped due to ICMP unreachable
                0 delayed free of SYN cache entries
        0 SYN,ACKs retransmitted
        0 duplicate SYNs received for entries already in the cache
        0 SYNs dropped (no route or no space)
        0 packets with bad signature
        0 packets with good signature
        0 sucessful ECN handshakes
        0 packets with ECN CE bit
        0 packets ECN ECT(0) bit
udp:
        0 datagrams received
       ...
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