From mboxrd@z Thu Jan  1 00:00:00 1970
From: <ravulakollu.kumar@wipro.com>
Subject: How classification happens in scheduling ?
Date: Wed, 20 Jan 2016 12:06:21 +0000
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Hi all,

Could someone explain me how this code snippet determining subport,pipe,tra=
ffic_class,queue,color.

        uint16_t *pdata =3D rte_pktmbuf_mtod(m, uint16_t *); //points to th=
e start of the data in the mbuf

        *subport =3D (rte_be_to_cpu_16(pdata[SUBPORT_OFFSET]) & 0x0FFF) &(p=
ort_params.n_subports_per_port - 1); /* Outer VLAN ID*/
        *pipe =3D (rte_be_to_cpu_16(pdata[PIPE_OFFSET]) & 0x0FFF) & (port_p=
arams.n_pipes_per_subport - 1); /* Inner VLAN ID */
        *traffic_class =3D (pdata[QUEUE_OFFSET] & 0x0F) & (RTE_SCHED_TRAFFI=
C_CLASSES_PER_PIPE - 1); /* Destination IP */
        *queue =3D ((pdata[QUEUE_OFFSET] >> 8) & 0x0F) & (RTE_SCHED_QUEUES_=
PER_TRAFFIC_CLASS - 1) ; /* Destination IP */
        *color =3D pdata[COLOR_OFFSET] & 0x03;    /* Destination IP */

Thanks & Regards,
Uday
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