Date: Wed, 20 Apr 2016 12:29:51 -0700 From: Navdeep Parhar <nparhar@gmail.com> To: bazzoola <bazzoola@gmail.com>, freebsd-net@freebsd.org Subject: Re: Tracing dropped UDP packets Message-ID: <1c18eb03-7520-7653-275c-073305203213@gmail.com> In-Reply-To: <5711CFF1.60708@gmail.com> References: <5711CFF1.60708@gmail.com>
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On 04/15/2016 22:38, bazzoola wrote: > Greetings, > > I would like to know where (in the kernel) UDP packets are dropped. Have you tried netstat -sp udp ? If the drops show up in some counter there then you can look at the kernel code to see where the counter is incremented. Regards, Navdeep > > I looked at udp_usrreq.c but is overwhelming for the 1st time. Is it > possible to use DTrace to locate where the packets are being dropped? or > is there a tool similar to 'dropwatch' which can tell me where in the > kernel my packets are getting dropped? > > On Linux, I used dropwatch and they were dropped packets were at > udp_queue_rcv_skb(). > > Thanks! > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >
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