|From:||"Chris Peterson" <cpeterso-AT-cpeterso.com>|
|Subject:||network devices: to IRQF_SAMPLE_RANDOM or not to IRQF_SAMPLE_RANDOM?|
|Date:||Tue, 13 May 2008 09:49:00 -0700|
Should network devices be allowed to contribute entropy to /dev/random? This issue has been discussed before, but does not seem to have been settled: some net drivers  use IRQF_SAMPLE_RANDOM when calling request_irq(), but the vast majority do not. It seems like all net drivers should follow the same entropy paranoia policy (whether that is all net drivers should use IRQF_SAMPLE_RANDOM, no net drivers, or a compile-time option). Robert Love wrote a patch that added such a compile-time option, CONFIG_NET_RANDOM (though I believe he stopped maintaining it in 2004).  chris  net drivers that use IRQF_SAMPLE_RANDOM: drivers/net/3c523.c drivers/net/3c527.c drivers/net/atlx/atl1.c drivers/net/cris/eth_v10.c drivers/net/ibmlana.c drivers/net/macb.c drivers/net/mv643xx_eth.c drivers/net/netxen/netxen_nic_main.c drivers/net/niu.c drivers/net/qla3xxx.c drivers/net/tg3.c drivers/net/xen-netfront.c  http://www.kernel.org/pub/linux/kernel/people/rml/netdev-...
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