Date: Thu, 3 Oct 2013 18:42:58 +0300 From: Tugrul Erdogan <h.tugrul.erdogan@gmail.com> To: freebsd-net@freebsd.org Subject: The reason of "ping: sendto: No buffer space available" and link_irq variable Message-ID: <CA%2Bwhn7TWm=WHxhNjVZzXC0hd3ZV4menhrYccy%2Bv-bYHBkxo6qw@mail.gmail.com>
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Hi, I am using FreeBSD alpha2 amd64 on my router and after packet loaded test attack I am taking "ping: sendto: No buffer space available" error when running ping from router to victim directoion. The nic is "Intel 82599EB". Whenever this problem began to show, I can track the packages by tcpdump but I think the packages can not be created physically when they are reached physical layer. Doing the nic down/up can not be solved the problem. When I testing I have found the "dev.ix.0.link_irq" value is increased very differently from other nic's link_irq values. So after assigning the value of 2 to this link_irq variable the problem solved. I want to your help at two path; firstly why should I take this error. Secondly what is the role of the link_irq variable, what is the situations which are trigger to increase the link_irq variable and is the real reason of this problem the link_irq variable or anything else under this mechanism? Thanks and best regards,
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