Hi, Chris Could you please help to check the return status of the gBS->SignalEvent and DispatchDpc (see attached patch file)? Ping's call back function should be invoked when IP4 driver calling SignalEvent or DispatchDpc (mostly after SingalEvent if you execute the ping command in EFI shell).
Best Regards, Siyuan From: Chris Cuthbert [mailto:nd6...@hotmail.com] Sent: Sunday, August 17, 2014 11:14 AM To: Edk2 Devel Subject: [edk2] Missing Ping Reply Hi All, I am implementing a UEFI driver for a network controller and I am producing Simple Network Protocol(SNP). To test this, I am using the 'ping' shell command. The problem is that I never get the first ping reply. I have debugged this all the way up the IPv4 stack and I can see that reply packet is being passed up but the first packet never reaches the 'ping' command. Logs below. From the ping source code it looks like it is creating an event to get a call back on reply packet and as part of the call back, it registers for event again if more replies are expected. But the first reply never kicks the call back function. Any suggestions ? Thanx. Shell> ping -n 1 172.25.17.100 Ping StartsAPing 172.25.17.100 16 data bytes NicVfTransmit (ARP request) NicVfGetPacket (ARP reply) NicVfTransmit (Ping packet) NicVfGetPacket (Ping reply) Ip4AccpetFrame EFI_IP_PROTO_ICMP (ICMP recognized) Ip4IcmpHandle ICMP_QUERY_MESSAGE Ip4ProcessIcmpQuery Ip4Demultiplex (Ip4Demultiplex function call) Ip4Demultiplex Ip4InterfaceEnquePacket Ip4Demultiplex Ip4InterfaceEnquePacket Ip4Demultiplex Ip4InterfaceDeliverPacket Ip4Demultiplex Ip4InterfaceDeliverPacket 1 packets transmitted, 0 received, 100% packet loss, time 0ms
Debug.patch
Description: Debug.patch
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