Sorry for the delay,
Acked-by: Jarno Rajahalme <ja...@ovn.org>
> On Jan 19, 2016, at 10:15 PM, Simon Horman <simon.hor...@netronome.com> wrote:
>
> Provide leading padding to allow pushing a value to a miniflow where
> the value is not aligned to 64 bytes and no value has already been
> pushed to the same word.
>
> This will be used by a follow-up patch to allow layer 3 packet - that is
> packets without an ethernet header - to be represented in flows.
>
> Signed-off-by: Simon Horman <simon.hor...@netronome.com>
>
> ---
> v9
> * New patch
> ---
> lib/flow.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/lib/flow.c b/lib/flow.c
> index f09c32523899..2a7116b675da 100644
> --- a/lib/flow.c
> +++ b/lib/flow.c
> @@ -225,6 +225,16 @@ BUILD_MESSAGE("FLOW_WC_SEQ changed: miniflow_extract()
> will have runtime "
> MF.data++; \
> }
>
> +#define miniflow_pad_from_64_(MF, OFS) \
> +{ \
> + MINIFLOW_ASSERT(MF.data < MF.end); \
> + \
> + MINIFLOW_ASSERT((OFS) % 8 != 0); \
> + miniflow_set_map(MF, OFS / 8); \
> + \
> + memset((uint8_t *)MF.data, 0, (OFS) % 8); \
> +}
> +
> #define miniflow_push_be16_(MF, OFS, VALUE) \
> miniflow_push_uint16_(MF, OFS, (OVS_FORCE uint16_t)VALUE);
>
> @@ -288,6 +298,9 @@ BUILD_MESSAGE("FLOW_WC_SEQ changed: miniflow_extract()
> will have runtime "
> #define miniflow_pad_to_64(MF, FIELD) \
> miniflow_pad_to_64_(MF, OFFSETOFEND(struct flow, FIELD))
>
> +#define miniflow_pad_from_64(MF, FIELD) \
> + miniflow_pad_from_64_(MF, offsetof(struct flow, FIELD))
> +
> #define miniflow_push_words(MF, FIELD, VALUEP, N_WORDS) \
> miniflow_push_words_(MF, offsetof(struct flow, FIELD), VALUEP, N_WORDS)
>
> --
> 2.1.4
>
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