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297a3f1241
To be used for verification of driver implementations. Note that the skb path is gone from the series, but I'm still keeping the implementation for any possible future work. $ xdp_hw_metadata <ifname> On the other machine: $ echo -n xdp | nc -u -q1 <target> 9091 # for AF_XDP $ echo -n skb | nc -u -q1 <target> 9092 # for skb Sample output: # xdp xsk_ring_cons__peek: 1 0x19f9090: rx_desc[0]->addr=100000000008000 addr=8100 comp_addr=8000 rx_timestamp_supported: 1 rx_timestamp: 1667850075063948829 0x19f9090: complete idx=8 addr=8000 # skb found skb hwtstamp = 1668314052.854274681 Decoding: # xdp rx_timestamp=1667850075.063948829 $ date -d @1667850075 Mon Nov 7 11:41:15 AM PST 2022 $ date Mon Nov 7 11:42:05 AM PST 2022 # skb $ date -d @1668314052 Sat Nov 12 08:34:12 PM PST 2022 $ date Sat Nov 12 08:37:06 PM PST 2022 Cc: John Fastabend <john.fastabend@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Willem de Bruijn <willemb@google.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Anatoly Burakov <anatoly.burakov@intel.com> Cc: Alexander Lobakin <alexandr.lobakin@intel.com> Cc: Magnus Karlsson <magnus.karlsson@gmail.com> Cc: Maryam Tahhan <mtahhan@redhat.com> Cc: xdp-hints@xdp-project.net Cc: netdev@vger.kernel.org Signed-off-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/20230119221536.3349901-18-sdf@google.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.