Attaching an external buffer to mbuf to be processed by VRAN Boost

[Rasa Varathan <varathan@hotmail.com>]

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Hi all,
I am trying to attach an external buffer to mbuf and process that in VRAN boost, but keep getting a Data Error on VRAN Boost.

Does VRAN boost support this process?

The process I use is similar to the example test_compressdec.c


static void extbuf_free_callback(void *addr __rte_unused, void *opaque __rte_unused)
{
}


// Attach  external buffer
struct rte_mbuf* Input_pkts_burst[1];

static struct rte_mbuf_ext_shared_info inbuf_info;
inbuf_info.free_cb = extbuf_free_callback;
inbuf_info.fcb_opaque = NULL;
rte_mbuf_ext_refcnt_set(&inbuf_info, 1);

rte_iova_t buf_iova = rte_mem_virt2iova(&Input_Data);
if (buf_iova == RTE_BAD_IOVA)
{
    printf(" RTE_BAD_IOVA  returned\n");
}

rte_pktmbuf_attach_extbuf(Input_pkts_burst[0],
                  &Input_Data,
                  buf_iova ,
                  inbutDataSize,
                  &inbuf_info);

input_pkts_burst[0]->data_off = 0;
input_pkts_burst[0]->data_len = inbutDataSize;
input_pkts_burst[0]->pkt_len  = inbutDataSize;

Could someone let me know, why am I getting a data error.

If I use an memcpy to copy the contents of Input_Data to Input_pkts_burst[0]. then the data is processed successfully by VRAN Boost.

Best Regards,
Rasa


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