[U-Boot] [PATCH] net: introduce packet capture support

[Bin Meng]

Hi Ramon,

On Fri, Jun 14, 2019 at 2:18 PM Ramon Fried <rfried.dev at gmail.com> wrote:
>
> Add support for capturing ethernet packets and storing
> them in memory in PCAP(2.4) format, later to be analyzed by
> any PCAP viewer software (IE. Wireshark)
>
> This feature greatly assist debugging network issues such
> as detecting dropped packets, packet corruption etc.
>
> Signed-off-by: Ramon Fried <rfried.dev at gmail.com>
> ---
>
>  include/net.h | 29 ++++++++++++++++++
>  net/Kconfig   | 22 ++++++++++++++
>  net/Makefile  |  1 +
>  net/net.c     | 11 +++++++
>  net/pcap.c    | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  5 files changed, 146 insertions(+)
>  create mode 100644 net/pcap.c
>

Nice to have such a feature. But how do we export the PCAP contents in
RAM to a file and transfer it to host for analysis by WireShark?
Should we support storing PCAP to a file on a file system in U-Boot?

Regards,
Bin