Re: [PATCH libibverbs 0/3] Scatter FCS support

[Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

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On 5/19/2016 8:52 AM, Yishai Hadas wrote:

> Frame Check Sequence(FCS) is an error detecting code that terminates an
> Ethernet frame. When using Raw Ethernet, users sometimes want to
> validate the FCS themselves, and therefore it should be scattered to the
> receive buffers.
> 
> This series adds the above support.
> 
> The user can control scattering the FCS using Queue-Pair(QP) creation flag
> called IBV_QP_CREATE_SCATTER_FCS.
> 
> Also, to report this new device capability, we had to add a new device
> capability flags in the uverbs response called device_cap_flags_ex, since all
> the current device_cap_flags are occupied.
> 
> device_cap_flags_ex 0-31 bits are identical to the legacy device_cap_flags, and
> the upper 32 bits (32-63 bits) report new extended device capabilities.
> 
> Devices that support scattering the FCS should report it in device_cap_flags_ex
> using IBV_DEVICE_RAW_SCATTER_FCS.
> 
> 
> Majd Dibbiny (3):
>   Extend devinfo verbosity mode
>   Add extended device capability flags
>   Add SCATTER_FCS QP create flag
> 
>  examples/devinfo.c            | 96 +++++++++++++++++++++++++++++++++++++++++++
>  include/infiniband/kern-abi.h |  2 +
>  include/infiniband/verbs.h    |  8 ++++
>  man/ibv_query_device_ex.3     |  1 +
>  src/cmd.c                     | 13 +++++-
>  5 files changed, 119 insertions(+), 1 deletion(-)
> 

Thanks, series applied.


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