use C11 alignof

Replace use of __alignof__(e) (resp. __alignof__(T) with C11
alignof(typeof(e)) (resp. alignof(T)) to improve portability
between toolchains.

Signed-off-by: Tyler Retzlaff <roretzla

use C11 alignof

Replace use of __alignof__(e) (resp. __alignof__(T) with C11
alignof(typeof(e)) (resp. alignof(T)) to improve portability
between toolchains.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Acked-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>
Acked-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

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pdcp: allocate reorder buffer alongside with entity

Instead of allocating reorder buffer separately on heap,
allocate memory for it together with rest of entity, and
then only initialize buffer via

pdcp: allocate reorder buffer alongside with entity

Instead of allocating reorder buffer separately on heap,
allocate memory for it together with rest of entity, and
then only initialize buffer via `rte_reorder_init()`.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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pdcp: add status report

Implement status report generation for PDCP entity.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Go

pdcp: add status report

Implement status report generation for PDCP entity.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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pdcp: add timer expiry handle

The PDCP protocol requires usage of timers to keep track of how long
an out-of-order packet should be buffered while waiting for missing
packets. Applications can regis

pdcp: add timer expiry handle

The PDCP protocol requires usage of timers to keep track of how long
an out-of-order packet should be buffered while waiting for missing
packets. Applications can register a desired timer implementation with the
PDCP library. Once the timer expires, the application will be notified, and
further handling of the event will be performed in the PDCP library.

When the timer expires, the PDCP library will return the cached packets,
and PDCP internal state variables (like RX_REORD, RX_DELIV etc) will be
updated accordingly.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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pdcp: add timer callback handlers

PDCP has a windowing mechanism which allows only packets that fall in a
reception window. The pivot point for this window is RX_REORD which
happens to be the first

pdcp: add timer callback handlers

PDCP has a windowing mechanism which allows only packets that fall in a
reception window. The pivot point for this window is RX_REORD which
happens to be the first missing or next expected packet. If the missing
packet is not received after a specified time, then the RX_REORD state
variable needs to be moved up to slide the reception window. PDCP relies
on timers for such operations.

The timer needs to be armed when PDCP library doesn't receive all
packets in-order and starts buffering packets that arrived after a
missing packet. The timer needs to be cancelled when a missing packet
is received.

To avoid dependency on particular timer implementation, PDCP library
allows application to register two callbacks, timer_start() and
timer_stop() that will be called later by library.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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pdcp: add t-Reordering and packet buffering

Add in-order delivery of packets in PDCP. Delivery of packets in-order
relies on t-Reordering timer.

When 'out-of-order delivery' is disabled, PDCP will

pdcp: add t-Reordering and packet buffering

Add in-order delivery of packets in PDCP. Delivery of packets in-order
relies on t-Reordering timer.

When 'out-of-order delivery' is disabled, PDCP will buffer all received
packets that are out of order. The t-Reordering timer determines the
time period these packets would be held in the buffer, waiting for any
missing packets to arrive.

Introduce packet buffering and state variables which indicate status of
the timer.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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pdcp: add control PDU handling for status report

Add control PDU handling and implement status report generation.
Status report generation works only when RX_DELIV = RX_NEXT.

Signed-off-by: Anoob J

pdcp: add control PDU handling for status report

Add control PDU handling and implement status report generation.
Status report generation works only when RX_DELIV = RX_NEXT.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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pdcp: add pre and post process for DL

Add routines to perform pre & post processing for down link entities.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Kiran Kumar K <kirankumar

pdcp: add pre and post process for DL

Add routines to perform pre & post processing for down link entities.

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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lib: add PDCP protocol

Add Packet Data Convergence Protocol (PDCP) processing library.

The library is similar to lib_ipsec which provides IPsec processing
capabilities in DPDK.

PDCP would involve

lib: add PDCP protocol

Add Packet Data Convergence Protocol (PDCP) processing library.

The library is similar to lib_ipsec which provides IPsec processing
capabilities in DPDK.

PDCP would involve roughly the following options,
1. Transfer of user plane data
2. Transfer of control plane data
3. Header compression
4. Uplink data compression
5. Ciphering and integrity protection

PDCP library provides following control path APIs that is used to
configure various PDCP entities,
1. rte_pdcp_entity_establish()
2. rte_pdcp_entity_suspend()
3. rte_pdcp_entity_release()

Signed-off-by: Anoob Joseph <anoobj@marvell.com>
Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Signed-off-by: Volodymyr Fialko <vfialko@marvell.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

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