netdev - why some packets lost during transmission?

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Message-ID: <60230E21F17E384C9BF0B9C98D9E3FDC04B4D3D8@sgp-sg-mb02.sgp.agilent.com>
Date:	Wed, 15 Jul 2009 17:17:27 +0800
From:	<jon_zhou@...lent.com>
To:	<netdev@...r.kernel.org>
Subject: why some packets lost during transmission?

hi

I try to send packets like this:

for (i=0;i<loop;i++)
{
    dev->hard_start_xmit(my_skb,dev);
}

the 'dev' point to network device.

but too many packets lost if the 'loop' is big(i.e. 5000),  I suspect the tx buffer of the NIC is full,but the driver does not print any related info.

how does the upper layer(i.e.arp,qdisc) handle this situation?

Thanks&Regards,
zhou rui

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