[Xen-devel] Write some informations from Netfront to Xenstore

To:	xen-devel@xxxxxxxxxxxxxxxxxxx
Subject:	[Xen-devel] Write some informations from Netfront to Xenstore
From:	"braham othmen" <braham.othmen@xxxxxxxxx>
Date:	Tue, 19 Aug 2008 10:30:50 +0200
Delivery-date:	Tue, 19 Aug 2008 01:31:14 -0700
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Hi,

I'm trying to write some informations from linux-2.6-xen-sparse/drivers/xen/netfront/netfront.c like the number of packets sent, received and dropped to the Xenstore. I succeed to get the information written correctly for several second and than i got a crash of the virtual machine which had executed the instruction of writing.

For example:

I put this instruction ligne after updating the number of packets transmitted in netif_poll() function of the code

np->stats.rx_packets++; // rx packet update
err = xenbus_printf(XBT_NIL,np->xbdev->nodename,"netfront_packet_rx","%lu ",np->stats.rx_packets); // the information is correctly written before the crash of the virtual machine

thank for your help and recommendations

Braham Othmen

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[Xen-devel] Write some informations from Netfront to Xenstore