I would use it :)
It's useful to store the IP protocol number (UDP, TCP etc) and version
of IP (4, 6) and then relay packet to specific handler.
08.09.2014 16:17, Olivier MATZ ?????:
> Hi Bruce,
>
> On 09/03/2014 05:49 PM, Bruce Richardson wrote:
>> Replace a reserved slot with the new packet type field used to identify
>> the type of the packet, i.e. what protocols are used.
>>
>> Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
>> ---
>> lib/librte_mbuf/rte_mbuf.h | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
>> index f136d37..8d0c6fb 100644
>> --- a/lib/librte_mbuf/rte_mbuf.h
>> +++ b/lib/librte_mbuf/rte_mbuf.h
>> @@ -146,7 +146,7 @@ struct rte_mbuf {
>> uint32_t reserved1; /**< Unused field. Required for padding */
>>
>> /* remaining bytes are set on RX when pulling packet from descriptor */
>> - uint16_t reserved2; /**< Unused field. Required for padding */
>> + uint16_t packet_type; /**< Type of packet, e.g. protocols used */
>> uint16_t data_len; /**< Amount of data in segment buffer. */
>> uint32_t pkt_len; /**< Total pkt len: sum of all segments. */
>> uint16_t l3_len:9; /**< L3 (IP) Header Length. */
>>
> This patch adds a new fields that nobody uses. So why should we add it ?
--
Sincerely,
Yerden Zhumabekov
State Technical Service
Astana, KZ
