Hi Dave,
If we go back to the data providing source i.e. FAPI interface, it is
implementation specific. As per SCF222:
Our customers do use BE data in network and at FAPI interface.
In LA12xx, at present, we use u8 Big-endian data for processing to FECA
engine. We do see that other drivers in DPDK are using Little Endian
*(with u32 data)* but standards is open for both.
Regards,
Hemant
On 4/26/2021 10:31 PM, Dave Burley wrote:
Hi Hemant
Can I ask what the usage case is for
RTE_BBDEV_LDPC_ENC_NETWORK_ORDER/RTE_BBDEV_LDPC_DEC_NETWORK_ORDER ?
Thanks
Dave
________________________________
From: dev <dev-boun...@dpdk.org> on behalf of Hemant Agrawal
<hemant.agra...@nxp.com>
Sent: 24 April 2021 11:36
To: dev@dpdk.org <dev@dpdk.org>; gak...@marvell.com <gak...@marvell.com>;
nicolas.chau...@intel.com <nicolas.chau...@intel.com>
Cc: david.march...@redhat.com <david.march...@redhat.com>; Hemant Agrawal
<hemant.agra...@nxp.com>
Subject: [dpdk-dev] [PATCH v4 1/8] bbdev: add network order data capability
CAUTION: This email originated from outside of the organization. Do not click
links or open attachments unless you recognize the sender and know the content
is safe.
This patch intoduces a new capability of the bbdev device
to process the LDPC data in network byte order.
Signed-off-by: Hemant Agrawal <hemant.agra...@nxp.com>
---
doc/guides/bbdevs/features/default.ini | 1 +
doc/guides/prog_guide/bbdev.rst | 6 ++++++
lib/bbdev/rte_bbdev_op.h | 8 ++++++--
3 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/doc/guides/bbdevs/features/default.ini
b/doc/guides/bbdevs/features/default.ini
index 5fe267a625..e5da644099 100644
--- a/doc/guides/bbdevs/features/default.ini
+++ b/doc/guides/bbdevs/features/default.ini
@@ -14,3 +14,4 @@ LLR/HARQ Compression =
External DDR Access =
HW Accelerated =
BBDEV API =
+Network Order Data =
diff --git a/doc/guides/prog_guide/bbdev.rst b/doc/guides/prog_guide/bbdev.rst
index 6b2bd54e1a..89a86d10fb 100644
--- a/doc/guides/prog_guide/bbdev.rst
+++ b/doc/guides/prog_guide/bbdev.rst
@@ -747,6 +747,9 @@ given below.
|RTE_BBDEV_LDPC_ENC_CONCATENATION |
| Set if a device supports concatenation of non byte aligned output |
+--------------------------------------------------------------------+
+|RTE_BBDEV_LDPC_ENC_NETWORK_ORDER |
+| Set if a device supports network order data processing |
++--------------------------------------------------------------------+
The structure passed for each LDPC encode operation is given below,
with the operation flags forming a bitmask in the ``op_flags`` field.
@@ -942,6 +945,9 @@ given below.
|RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_LOOPBACK |
| Set if a device supports loopback access to HARQ internal memory |
+--------------------------------------------------------------------+
+|RTE_BBDEV_LDPC_DEC_NETWORK_ORDER |
+| Set if a device supports network order data processing |
++--------------------------------------------------------------------+
The structure passed for each LDPC decode operation is given below,
with the operation flags forming a bitmask in the ``op_flags`` field.
diff --git a/lib/bbdev/rte_bbdev_op.h b/lib/bbdev/rte_bbdev_op.h
index f946842727..8fab617768 100644
--- a/lib/bbdev/rte_bbdev_op.h
+++ b/lib/bbdev/rte_bbdev_op.h
@@ -186,7 +186,9 @@ enum rte_bbdev_op_ldpcdec_flag_bitmasks {
* for HARQ memory. If not set, it is assumed the filler bits are not
* in HARQ memory and handled directly by the LDPC decoder.
*/
- RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_FILLERS = (1ULL << 18)
+ RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_FILLERS = (1ULL << 18),
+ /** Set if a device supports network order data processing */
+ RTE_BBDEV_LDPC_DEC_NETWORK_ORDER = (1ULL << 19)
};
/** Flags for LDPC encoder operation and capability structure */
@@ -206,7 +208,9 @@ enum rte_bbdev_op_ldpcenc_flag_bitmasks {
/** Set if a device supports scatter-gather functionality. */
RTE_BBDEV_LDPC_ENC_SCATTER_GATHER = (1ULL << 6),
/** Set if a device supports concatenation of non byte aligned output
*/
- RTE_BBDEV_LDPC_ENC_CONCATENATION = (1ULL << 7)
+ RTE_BBDEV_LDPC_ENC_CONCATENATION = (1ULL << 7),
+ /** Set if a device supports network order data processing */
+ RTE_BBDEV_LDPC_ENC_NETWORK_ORDER = (1ULL << 8)
};
/** Flags for the Code Block/Transport block mode */
--
2.17.1
