netdev - Re: [PATCH bpf-next 0/6] Enhancements to xdpsock application

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Date:   Fri, 20 Dec 2019 11:04:42 +0100
From:   Björn Töpel <bjorn.topel@...il.com>
To:     Jay Jayatheerthan <jay.jayatheerthan@...el.com>
Cc:     "Karlsson, Magnus" <magnus.karlsson@...el.com>,
        Björn Töpel <bjorn.topel@...el.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Netdev <netdev@...r.kernel.org>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH bpf-next 0/6] Enhancements to xdpsock application

On Fri, 20 Dec 2019 at 09:55, Jay Jayatheerthan
<jay.jayatheerthan@...el.com> wrote:
>
> This series of patches enhances xdpsock application with command line
> parameters to set transmit packet size and fill pattern among other options.
> The application has also been enhanced to use Linux Ethernet/IP/UDP header
> structs and calculate IP and UDP checksums.
>
> I have measured the performance of the xdpsock application before and after
> this patch set and have not been able to detect any difference.
>
> Packet Size:
> ------------
> There is a new option '-s' or '--tx-pkt-size' to specify the transmit packet
> size. It ranges from 47 to 4096 bytes. Default packet size is 64 bytes
> which is same as before.
>
> Fill Pattern:
> -------------
> The transmit UDP payload fill pattern is specified using '-P' or
> '--tx-pkt-pattern'option. It is an unsigned 32 bit field and defaulted
> to 0x12345678.
>
> Packet Count:
> -------------
> The number of packets to send is specified using '-C' or '--tx-pkt-count'
> option. If it is not specified, the application sends packets forever.
>
> Batch Size:
> -----------
> The batch size for transmit, receive and l2fwd features of the application is
> specified using '-b' or '--batch-size' options. Default value when this option
> is not provided is 64 (same as before).
>
> Duration:
> ---------
> The application supports '-d' or '--duration' option to specify number of
> seconds to run. This is used in tx, rx and l2fwd features. If this option is
> not provided, the application runs for ever.
>
> This patchset has been applied against commit 99cacdc6f661f50f
> ("Merge branch 'replace-cg_bpf-prog'")
>

Thanks for the hard work! I really like the synchronous cleanup! My
scripts are already using the '-d' flag!

For the series:
Tested-by: Björn Töpel <bjorn.topel@...el.com>
Acked-by: Björn Töpel <bjorn.topel@...el.com>


> Jay Jayatheerthan (6):
>   samples/bpf: xdpsock: Add duration option to specify how long to run
>   samples/bpf: xdpsock: Use common code to handle signal and main exit
>   samples/bpf: xdpsock: Add option to specify batch size
>   samples/bpf: xdpsock: Add option to specify number of packets to send
>   samples/bpf: xdpsock: Add option to specify tx packet size
>   samples/bpf: xdpsock: Add option to specify transmit fill pattern
>
>  samples/bpf/xdpsock_user.c | 426 +++++++++++++++++++++++++++++++++----
>  1 file changed, 387 insertions(+), 39 deletions(-)
>
> --
> 2.17.1
>