[dpdk-dev] [PATCH 2/3] mbuf: add a non fatal sanity check helper
David Marchand
david.marchand at 6wind.com
Mon Sep 10 10:24:53 CEST 2018
On Mon, Sep 10, 2018 at 10:12 AM, Andrew Rybchenko
<arybchenko at solarflare.com> wrote:
> +/**
> + * Sanity checks on a mbuf.
> + *
> + * Almost like rte_mbuf_sanity_check(), but this function gives the reason
> + * if corruption is detected rather than panic.
> + *
> + * @param m
> + * The mbuf to be checked.
> + * @param is_header
> + * True if the mbuf is a packet header, false if it is a sub-segment
> + * of a packet (in this case, some fields like nb_segs are not checked)
> + * @param reason
> + * A reference to a string pointer where to store the reason why a mbuf
> is
> + * considered invalid.
> + * @return
> + * - 0 if no issue has been found, reason is left untouched.
> + * - -1 if a problem is detected, reason then points to a string
> describing
> + * the reason why the mbuf is deemed invalid.
> + */
> +__rte_experimental
> +int rte_mbuf_check(const struct rte_mbuf *m, int is_header,
> + const char **reason);
> +
>
>
> May be it would be better to return reason as return value and if it is NULL
> everything is OK?
This was what I had done with my first attempt.
But given the name "rte_mbuf_check", having a int (used as a bool)
returned makes sense to me.
So no strong opinion here.
--
David Marchand
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