I am running the vagrant machine provided, so I run on Ubuntu 16.04.02 TLS.
I tried clib_warning(), clib_unix_warning(), clib_error() and clib_unix_error(). I inserted that line in both vvp/src/vnet/ip/punt.c and vpp/src/vnet/ip/ip4_forward.c in order to be sure that the packet was actually reaching the node. However, there is no sign in /var/log/syslog or anywhere else I can think of about that message Are you sure there is no other place where they can be printed? Thanks for the cooperation, Alessio On Thu, Jun 1, 2017 at 7:26 PM, John Lo (loj) <l...@cisco.com> wrote: > The output of clib_warning() call should be in the syslog. If running vpp > in Ubuntu, take a look in /var/log/syslog. -John > > > > *From:* vpp-dev-boun...@lists.fd.io [mailto:vpp-dev-boun...@lists.fd.io] *On > Behalf Of *Alessio Silvestro > *Sent:* Thursday, June 01, 2017 12:11 PM > *To:* Luke, Chris <chris_l...@comcast.com> > *Cc:* vpp-dev@lists.fd.io > *Subject:* Re: [vpp-dev] VPP Node Debug > > > > I knew VPP run in user space and that printk is not the best option, > however from the documentation it is not clear to me how to do that. > > > > For example now I inserted the command clib_warning("I am here!") in the > node I create -- that from vppctl show trace I can see processes the > packets. > > > > Where does it prints? > > > > Still I cannot figure it out. > > > > Thanks, > > Alessio > > > > On Thu, Jun 1, 2017 at 6:00 PM, Luke, Chris <chris_l...@comcast.com> > wrote: > > printk() is typically a kernel thing, no? This isn’t kernel code. 😊 > > > > If you just want stuff on the console when running in a debugger, or > interactively, clib_warning() may be what you are looking for. > > > > Chris. > > > > > > *From:* vpp-dev-boun...@lists.fd.io [mailto:vpp-dev-boun...@lists.fd.io] *On > Behalf Of *Alessio Silvestro > *Sent:* Thursday, June 1, 2017 10:35 > *To:* vpp-dev@lists.fd.io > *Subject:* [vpp-dev] VPP Node Debug > > > > Hi all, > > > > I am using this code "https://gerrit.fd.io/r/#/c/6721/"; to in order to > enable an external process to receive UDP packets. > > > > I tried to use printk -- including module.h in the c file. > > > > When I compile VPP with: > > > > TOPDIR/vpp make build-release > > > > I got the following error > > > > fatal error: linux/module.h: No such file or directory > > compilation terminated. > > > > Do you have any idea why? > > > > Is there a better way to debug the code of a node in VPP? > > > > Thanks, > > Alessio > > >
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