netdev - Re: [PATCHv9 bpf-next 4/4] selftests/bpf: add xdp_redirect

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Date:   Mon, 26 Apr 2021 18:19:40 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     bpf@...r.kernel.org, netdev@...r.kernel.org,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        Jiri Benc <jbenc@...hat.com>,
        Eelco Chaudron <echaudro@...hat.com>, ast@...nel.org,
        Daniel Borkmann <daniel@...earbox.net>,
        Lorenzo Bianconi <lorenzo.bianconi@...hat.com>,
        David Ahern <dsahern@...il.com>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        John Fastabend <john.fastabend@...il.com>,
        Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
        Björn Töpel <bjorn.topel@...il.com>,
        Martin KaFai Lau <kafai@...com>
Subject: Re: [PATCHv9 bpf-next 4/4] selftests/bpf: add xdp_redirect_multi test

On Mon, Apr 26, 2021 at 11:28:32AM +0200, Jesper Dangaard Brouer wrote:
> On Thu, 22 Apr 2021 15:14:54 +0800
> Hangbin Liu <liuhangbin@...il.com> wrote:
> 
> > Add a bpf selftest for new helper xdp_redirect_map_multi(). In this
> > test there are 3 forward groups and 1 exclude group. The test will
> > redirect each interface's packets to all the interfaces in the forward
> > group, and exclude the interface in exclude map.
> > 
> > Two maps (DEVMAP, DEVMAP_HASH) and two xdp modes (generic, drive) will
> > be tested. XDP egress program will also be tested by setting pkt src MAC
> > to egress interface's MAC address.
> > 
> > For more test details, you can find it in the test script. Here is
> > the test result.
> > ]# ./test_xdp_redirect_multi.sh
> 
> Running this test takes a long time around 3 minutes.

Yes, there are some sleeps, ping tests. Don't know if I missed
anything, is there a time limit for the selftest?

Thanks
hangbin
> 
> $ sudo time -v ./test_xdp_redirect_multi.sh
> Pass: xdpgeneric arp ns1-2
> Pass: xdpgeneric arp ns1-3
> Pass: xdpgeneric arp ns1-4
> Pass: xdpgeneric ping ns1-2
> Pass: xdpgeneric ping ns1-3
> Pass: xdpgeneric ping ns1-4
> Pass: xdpgeneric ping6 ns1-2
> Pass: xdpgeneric ping6 ns1-1 number
> Pass: xdpgeneric ping6 ns1-2 number
> Pass: xdpdrv arp ns1-2
> Pass: xdpdrv arp ns1-3
> Pass: xdpdrv arp ns1-4
> Pass: xdpdrv ping ns1-2
> Pass: xdpdrv ping ns1-3
> Pass: xdpdrv ping ns1-4
> Pass: xdpdrv ping6 ns1-2
> Pass: xdpdrv ping6 ns1-1 number
> Pass: xdpdrv ping6 ns1-2 number
> Pass: xdpegress mac ns1-2
> Pass: xdpegress mac ns1-3
> Pass: xdpegress mac ns1-4
> Summary: PASS 21, FAIL 0
> 	Command being timed: "./test_xdp_redirect_multi.sh"
> 	User time (seconds): 0.15
> 	System time (seconds): 0.51
> 	Percent of CPU this job got: 0%
> 	Elapsed (wall clock) time (h:mm:ss or m:ss): 3:09.68
> 	Average shared text size (kbytes): 0
> 	Average unshared data size (kbytes): 0
> 	Average stack size (kbytes): 0
> 	Average total size (kbytes): 0
> 	Maximum resident set size (kbytes): 6904
> 	Average resident set size (kbytes): 0
> 	Major (requiring I/O) page faults: 13
> 	Minor (reclaiming a frame) page faults: 46316
> 	Voluntary context switches: 1907
> 	Involuntary context switches: 371
> 	Swaps: 0
> 	File system inputs: 0
> 	File system outputs: 0
> 	Socket messages sent: 0
> 	Socket messages received: 0
> 	Signals delivered: 0
> 	Page size (bytes): 4096
> 	Exit status: 0
> 
> -- 
> Best regards,
>   Jesper Dangaard Brouer
>   MSc.CS, Principal Kernel Engineer at Red Hat
>   LinkedIn: http://www.linkedin.com/in/brouer
>