[Oisf-users] Packets stucked in Nfqueue when running inline

Eric Leblond eric at regit.org
Thu Aug 18 17:18:20 UTC 2011


Hi,

On Thu, 2011-08-18 at 12:11 -0500, Fernando Ortiz wrote:
> I changed this:
> ret = nfq_set_verdict2(t->qh, p->nfq_v.id, NF_DROP, 0, 0, NULL);
> to this:
> ret = nfq_set_verdict2(qh, p->nfq_v.id, NF_DROP, 0, 0, NULL);
> 
> 
> It compiled. Is it ok ? :P

If it compiled, it is ok. Segfault is just random :P

BR,

> 
> 
> source-nfq.c: 
> 
> 
> static int NFQCallBack(struct nfq_q_handle *qh, struct nfgenmsg
> *nfmsg,
>               struct nfq_data *nfa, void *data)
> {
>     NFQThreadVars *ntv = (NFQThreadVars *)data;
>     ThreadVars *tv = ntv->tv;
>     int ret;
> 
> 
> .......
> 
> 
>         SCLogWarning(SC_ERR_NFQ_HANDLE_PKT, "NFQ setup failure");
> #ifdef HAVE_NFQ_SET_VERDICT2
>         *ret = nfq_set_verdict2(qh, p->nfq_v.id, NF_DROP, 0, 0,
> NULL);*
> #else
>         ret = nfq_set_verdict(qh, p->nfq_v.id, NF_DROP, 0, NULL);
> #endif
>         if (ret < 0) {
> 
> 
> 
> 2011/8/18 Fernando Ortiz <fernando.ortiz.f at gmail.com>
>         (Forgot to send this to the list too)
>         
>         
>         All patches worked find. I got this error again, though 
>         
>         
>         source-nfq.c: In function âNFQCallBackâ:
>         source-nfq.c:328:32: error: âtâ undeclared (first use in this
>         function)
>         source-nfq.c:328:32: note: each undeclared identifier is
>         reported only once for each function it appears in
>         
>         
>         Regards
>         
>         
>         2011/8/18 Fernando Ortiz <fernando.ortiz.f at gmail.com>
>                 All patches worked find. I got this error again,
>                 though 
>                 
>                 
>                 source-nfq.c: In function âNFQCallBackâ:
>                 source-nfq.c:328:32: error: âtâ undeclared (first use
>                 in this function)
>                 source-nfq.c:328:32: note: each undeclared identifier
>                 is reported only once for each function it appears in
>                 
>                 
>                 
>                 
>                 
>                 
>                 2011/8/18 Fernando Ortiz <fernando.ortiz.f at gmail.com>
>                         Great! I will test this and keep you informed.
>                         
>                         
>                         Thanks
>                         
>                         
>                         
>                         2011/8/18 Eric Leblond <eric at regit.org>
>                                 Hello,
>                                 
>                                 On Thu, 2011-08-18 at 10:32 -0500,
>                                 Fernando Ortiz wrote:
>                                 
>                                 > I had problems with both patches:
>                                 
>                                 
>                                 Oups, at least 4 patches were missing
>                                 on the way from origin/master to
>                                 this two patches.
>                                 
>                                 In attachement please find the result
>                                 of a cherry-pick party of all my
>                                 commits on NFQ. They have been applied
>                                 on origin/master and this should
>                                 thus apply easily on your side.
>                                 
>                                 BR,
>                                 
>                                 
>                                 >
>                                 > Patch 1:
>                                 > patching file source-nfq.c
>                                 > Hunk #1 FAILED at 247.
>                                 > Hunk #2 FAILED at 320.
>                                 > 2 out of 2 hunks FAILED -- saving
>                                 rejects to file source-nfq.c.rej
>                                 >
>                                 >
>                                 > Patch 2:
>                                 > patching file decode.h
>                                 > patching file source-ipfw.c
>                                 > Hunk #1 FAILED at 518.
>                                 > 1 out of 1 hunk FAILED -- saving
>                                 rejects to file source-ipfw.c.rej
>                                 > patching file source-nfq.c
>                                 > Hunk #1 FAILED at 339.
>                                 > Hunk #2 FAILED at 918.
>                                 > 2 out of 2 hunks FAILED -- saving
>                                 rejects to file source-nfq.c.rej
>                                 > patching file source-nfq.h
>                                 > patching file tmqh-packetpool.c
>                                 > Hunk #1 succeeded at 49 with fuzz 1.
>                                 > Hunk #2 FAILED at 159.
>                                 > Hunk #3 FAILED at 192.
>                                 > 2 out of 3 hunks FAILED -- saving
>                                 rejects to file
>                                 > tmqh-packetpool.c.rej
>                                 >
>                                 >
>                                 > I manually edited the files. But
>                                 still have problems in compilation.
>                                 > Specifically with patch 1
>                                 >
>                                 >
>                                 > source-nfq.c: In function
>                                 âNFQCallBackâ:
>                                 > source-nfq.c:322:32: error: "t"
>                                 undeclared (first use in this
>                                 > function)
>                                 > source-nfq.c:322:32: note: each
>                                 undeclared identifier is reported only
>                                 > once for each function it appears in
>                                 >
>                                 >
>                                 >
>                                 >
>                                 > source-nfq.c: In function
>                                 "NFQSetVerdict":
>                                 > source-nfq.c:798:2: warning:
>                                 âreturnâ with no value, in function
>                                 > returning non-void
>                                 >
>                                 >
>                                 > In my source-nfq.c I had this
>                                 function declaration.
>                                 > void NFQSetVerdict(Packet *p) {
>                                 >
>                                 >
>                                 > But in the patch 2, it looks like
>                                 that function returns TmEcode
>                                 > TmEcode NFQSetVerdict(Packet *p) {
>                                 >
>                                 >
>                                 > I changed it, as it was in the patch
>                                 thus there is a warning because
>                                 > there is a void return in the code.
>                                 >
>                                 >
>                                 > TmEcode NFQSetVerdict(Packet *p) {
>                                 >     int iter = 0;
>                                 >     /* can't verdict a "fake" packet
>                                 */
>                                 >     if (p->flags &
>                                 PKT_PSEUDO_STREAM_END) {
>                                 >           return;
>                                 >     }
>                                 >
>                                 >
>                                 > I am working with the last
>                                 repository in git. Could you give a
>                                 hand
>                                 > please?
>                                 >
>                                 >
>                                 >
>                                 > 2011/8/17 Fernando Ortiz
>                                 <fernando.ortiz.f at gmail.com>
>                                 >         Great! I will test both
>                                 right now. Thank you.
>                                 >
>                                 >
>                                 >
>                                 >         2011/8/17 Eric Leblond
>                                 <eric at regit.org>
>                                 >                 Hello again,
>                                 >
>                                 >                 On Wed, 2011-08-17
>                                 at 16:53 +0200, Eric Leblond wrote:
>                                 >                 > Hi again,
>                                 >                 >
>                                 >                 > On Wed, 2011-08-17
>                                 at 16:28 +0200, Eric Leblond
>                                 >                 wrote:
>                                 >                 > > Hello,
>                                 >                 > >
>                                 >                 > > On Tue,
>                                 2011-08-16 at 14:30 -0500, Fernando
>                                 Ortiz
>                                 >                 wrote:
>                                 >                 > > > Sorry the late
>                                 of the answer. I got a server to
>                                 >                 make more test in
>                                 >                 > > > production
>                                 again.
>                                 >                 > >
>                                 >                 > > No problem, I
>                                 was on holiday :P
>                                 >                 > >
>                                 >                 > > > I patched
>                                 Suricata. I still have the same
>                                 >                 problem with packets
>                                 stucked
>                                 >                 > >
>                                 >                 > > Bad news.
>                                 >                 > >
>                                 >                 > > If you have some
>                                 time, could you test the attached
>                                 >                 patch.
>                                 >                 >
>                                 >                 > This is not
>                                 necessary to test this patch: I've
>                                 >                 continued to study
>                                 the
>                                 >                 > problem. There is
>                                 an issue with the code pointed out
>                                 >                 by the patch but
>                                 >                 > this can not
>                                 explain the problem.
>                                 >
>                                 >
>                                 >                 Two patches will
>                                 follow this mail. The fist one
>                                 >                 improves the error
>                                 >                 handling in NFQ and
>                                 suppress one of the potential
>                                 >                 source of ghost
>                                 >                 packets. The second
>                                 one is more generic but it should
>                                 >                 fix one other
>                                 >                 potential source.
>                                 >
>                                 >                 Both patches display
>                                 explicit message in log level
>                                 >                 warning. If
>                                 something
>                                 >                 occurs, you will not
>                                 missed it.
>                                 >
>                                 >                 BR,
>                                 >                 --
>                                 >
>                                 >                 Eric Leblond
>                                 >                 Blog:
>                                 http://home.regit.org/
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 >
>                                 
>                                 
>                                 --
>                                 
>                                 Eric Leblond
>                                 Blog: http://home.regit.org/
>                                 
>                         
>                         
>                         
>                         
>                         -- 
>                         Fernando Ortiz 
>                         Twitter: http://twitter.com/FernandOrtizF
>                          
>                         
>                 
>                 
>                 
>                 
>                 -- 
>                 Fernando Ortiz 
>                 Twitter: http://twitter.com/FernandOrtizF
>                  
>                 
>         
>         
>         
>         
>         -- 
>         Fernando Ortiz 
>         Twitter: http://twitter.com/FernandOrtizF
>          
>         
> 
> 
> 
> 
> -- 
> Fernando Ortiz 
> Twitter: http://twitter.com/FernandOrtizF
>  

-- 
Eric Leblond 
Blog: http://home.regit.org/
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