Re: [dpdk-dev] [PATCH v3] mbuf/ip_frag: Move mbuf chaining to common code

[Olivier MATZ <olivier.matz@6wind.com>]

Hi Simon,

On 09/07/2015 02:50 PM, Simon Kagstrom wrote:
> Chaining/segmenting mbufs can be useful in many places, so make it
> global.
> 
> Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
> Signed-off-by: Johan Faltstrom <johan.faltstrom@netinsight.net>
> 
> [...]
> 
> --- a/lib/librte_mbuf/rte_mbuf.h
> +++ b/lib/librte_mbuf/rte_mbuf.h
> @@ -1775,6 +1775,40 @@ static inline int rte_pktmbuf_is_contiguous(const struct rte_mbuf *m)
>  }
>  
>  /**
> + * Chain an mbuf to another, thereby creating a segmented packet.
> + *
> + * Note: The implementation will do a linear walk over the segments to find
> + * the tail entry. For cases when there are many segments, it's better to
> + * chain the entries manually.
> + *
> + * @param head the head of the mbuf chain (the first packet)
> + * @param tail the mbuf to put last in the chain
> + *
> + * @return 0 on success, -EOVERFLOW if the chain is full (256 entries)
> + */

Small nit about the API comment, it should be:

@param head
  The head of the mbuf chain (the first packet).
...

(note the uppercase and the dot at the end, see the other functions
in the file)

I know Thomas usually fixes this kind of stuff when he pushes
the patches, but it's better if we can avoid him this load :)


Regards,
Olivier