In addition to the previous mail : the number of Packets that I received in my app is equal to the number of ps_recv. Therefore I think the packets drops happens before the winpcap driver. Is it right ?
Liuyulou 在 2010-12-1，15:12，Helmut Vaupotitsch <[email protected]> 写道： if ps_drop=0, then the *driver* hasn´t lost packets (see Re: [Winpcap-users] Question about the struct type pcap_t. from 28.10!) Most likely your app looses packets... ...try to implement a ringbuffer in the following way: one thread just fills the pre-allocated FIFO, another thread processes the buffer Regards Helmut yulou liu schrieb: I have made these experiments : PC captures data packets from a FPGA board. 1, I made a Loop back test that can verify there is no packet drops between FPGA TO FPGA. 2Each data packets from FPGA board has a sequence number. Then PC can figure that there are packets drops. (the packets number that pc gets does not match the sequence of the packets). 3, call the pcap_stats_ex() , the result is : ps_drop=0 . That means there is no packets drops between the kernel buffer to user buffer. According to above , Packet drops could occur in the system netcard to winPcap kernel driver. Is this conclusion right ? Is it is right , what is the suggestion ? Can it be improved to use a more professional net card ? Liuyulou ------------------------------ _______________________________________________ Winpcap-users mailing [email protected]https://www.winpcap.org/mailman/listinfo/winpcap-users -- ---------------------------------------------------------------- Ing. Helmut Vaupotitsch Phone: +43 (0)3133 3780 16 ITEC Tontechnik und Fax: +43 (0)3133 3780 9 Industrieelektronik GmbH E-mail: [email protected] A-8200 Lassnitzthal 300 URL: http://www.itec-audio.com ---------------------------------------------------------------- _______________________________________________ Winpcap-users mailing list [email protected] https://www.winpcap.org/mailman/listinfo/winpcap-users
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