From: Shreyansh Jain <shreyansh.jain@nxp.com>
To: <david.marchand@6wind.com>
Cc: <dev@dpdk.org>, <thomas.monjalon@6wind.com>,
Shreyansh Jain <shreyansh.jain@nxp.com>
Subject: [dpdk-dev] [PATCH v7 0/9] Introducing EAL Bus-Device-Driver Model
Date: Tue, 17 Jan 2017 15:39:25 +0530 [thread overview]
Message-ID: <1484647774-28984-1-git-send-email-shreyansh.jain@nxp.com> (raw)
In-Reply-To: <1484581107-2025-1-git-send-email-shreyansh.jain@nxp.com>
Link to v6: [16]
:: Introduction ::
DPDK has been inherently a PCI inclined framework. Because of this, the
design of device tree (or list) within DPDK is also PCI inclined. A
non-PCI device doesn't have a way of being expressed without using hooks
started from EAL to PMD.
(Check 'Version Changes' section for changes)
:: Overview of the Proposed Changes ::
Assuming the below graph for a computing node:
device A1
|
+==.===='==============.============+ Bus A.
| `--> driver A11 \
device A2 `-> driver A12 \______
|CPU |
/`````
device B1 /
| /
+==.===='==============.============+ Bus B`
| `--> driver B11
device B2 `-> driver B12
- One or more buses are connected to a CPU (or core)
- One or more devices are conneted to a Bus
- Drivers are running instances which manage one or more devices
- Bus is responsible for identifying devices (and interrupt propogation)
- Driver is responsible for initializing the device
In [15], model assumes that rte_bus would be the base class using which
all the bus implementations would instantiate the objects. This patches
takes a much more basic approach, on the same lines of rte_device/
rte_driver and rte_pci_device/rte_pci_driver.
This is based on various review comments as well as offline (IRC)
discussions.
- rte_bus is an abstract class which includes basic methods supported by
all buses.
- specific implementation, for example for PCI rte_pci_bus, would extend
this class to form their own buses, with their own bus specific device
and driver list.
-
+-----------------+
|rte_pci_bus |
|+---------------+|
||rte_bus ||
|+---------------+|
+-----------------+
And example implementation would look like:
.--------------->+-------------------+
| |rte_pci_bus |
| | +----------------+|
| | |rte_bus <------.
| | | name || |
| | | scan || |
| | | probe || |
| | | attach || |
| | | detach || |
| | +----------------+| |
| | pci_driver_list | |
| .-------------->pci_device_list | |
| | | ... | |
| | +-------------------+ |
| | |
| +-------------------+ |
| |rte_pci_device | |
'----bus | |
| +----------------+| |
| |rte_device || |
| | bus --------------------------------'
| | ... ||
| +----------------+|
| ... |
+-------------------+
:: Brief about Patch Layout ::
0001~0002: Introducing the basic Bus model and associated test case
0003 : Split the PCI match into a separate function
0004~0005: Introduce bus->scan/probe callbacks
0006 : Integrate bus with EAL, without removing existing PCI probe/
scan from EAL
0007 : Update the Bus and PCI test cases for scanning/probing
0008 : Enable PCI bus and remove code for direct PCI scan/probe from
EAL
0009 : Add device hotplugging over the bus and introduce PCI helpers
:: Pending Changes/Caveats ::
1. This patchset only moves the PCI into a bus. And, that movement is also
currently part of the EAL (lib/librte_eal/linux)
Eventual aim is the PCI bus reside in driver/bus/pci
2. Though the implementation for bus is common for Linux and BSD, the PCI
bus implementation has been done/tested only for Linux.
3. RTE_REGISTER_BUS has been declared with contructor priority of 101
It is important that Bus is registered *before* drivers are registered.
Only way I could find to assure that was via
__attribute(contructor(priority)) of GCC. I am not sure how it would
behave on other compilers. Any suggestions?
- One suggestion from David Marchand was to use global bus object
handles, which I have not implemented for now. If that is common
choice, I will change in v3.
4. Hotplugging has been introduced over Bus with a caveat - it would only
work for ports/NICs already scanned and available in the bus list.
:: ToDo list ::
- Bump to librte_eal version
- Documentation continues to have references to some _old_ PCI symbols
:: References ::
[1] http://dpdk.org/ml/archives/dev/2016-November/050186.html
[2] http://dpdk.org/ml/archives/dev/2016-November/050622.html
[3] http://dpdk.org/ml/archives/dev/2016-November/050416.html
[4] http://dpdk.org/ml/archives/dev/2016-November/050567.html
[5] http://dpdk.org/ml/archives/dev/2016-November/050628.html
[6] http://dpdk.org/ml/archives/dev/2016-November/050415.html
[7] http://dpdk.org/ml/archives/dev/2016-November/050443.html
[8] http://dpdk.org/ml/archives/dev/2016-November/050624.html
[9] http://dpdk.org/ml/archives/dev/2016-November/050296.html
[10] http://dpdk.org/ml/archives/dev/2016-December/051349.html - v1
[12] http://dpdk.org/ml/archives/dev/2016-December/052092.html - v2
[13] http://dpdk.org/ml/archives/dev/2016-December/052381.html - v3
[14] http://dpdk.org/ml/archives/dev/2016-December/053302.html - v4
[15] http://dpdk.org/ml/archives/dev/2016-December/053315.html - v5
[16] http://dpdk.org/ml/archives/dev/2017-January/055120.html - v6
:: Version Changes ::
v7:
- update to rte_pci_match for const parameters
- remove unnecessary log messages in probe; moved _after_ matching
of device and driver
- bug fixes in attach/detach methods
- PCI disable for debugging was missed (from rte_eal_pci_init) in v6
- Split patch 5 into two: one for scan handler, another for integration
with EAL
v6:
- Rearchitecture to bring bus object parallel to rte_device/driver
This majorly includes:
-- rte_pci_bus class and pci_bus as its object for PCI
-- bus->attach/detach (hotplugging)
-- removing bus->match as that is local to an implementation
- rename symbols rte_eal_bus_* to rte_bus_*
- restructuring patches (order) for simplicity
- update to test_pci
v5:
- Fix checkpatch error in Patch 0003
v4:
- rebase over master (eac901ce)
- Fix a bug in test_bus while setup and cleanup
- rename rte_eal_get_bus to rte_eal_bus_get
- Add helper (iterator) macros for easy bus,device,driver traversal
- removed 0001 patch as it is already merged in master
- fix missing rte_eal_bus_insert_device symbol in map file
v3:
- rebase over master (c431384c8f)
- revert patch 0001 changes for checkpatch (container_of macro)
- qat/rte_qat_cryptodev update for rte_driver->probe
- test_pci update for using a test_pci_bus for verification
- some bug fixes based on internal testing.
-- rte_eal_dev_attach not handling devargs
-- blacklisting not working
v2:
- No more bus->probe()
Now, rte_eal_bus_probe() calls rte_driver->probe based on match output
- new functions, rte_eal_pci_probe and rte_eal_pci_remove have been
added as glue code between PCI PMDs and PCI Bus
`-> PMDs are updated to use these new functions as callbacks for
rte_driver
- 'default' keyword has been removed from match and scan
- Fix for incorrect changes in mlx* and nicvf*
- Checkpatch fixes
- Some variable checks have been removed from internal functions;
functions which are externally visible continue to have such checks
- Some rearrangement of patches:
-- changes to drivers have been separated from EAL changes (but this
does make PCI PMDs non-working for a particular patch)
Shreyansh Jain (9):
eal/bus: introduce bus abstraction
test: add basic bus infrastructure tests
pci: split match and probe function
eal/bus: support for scanning of bus
eal/bus: introduce support for bus probing
eal: integrate bus scan and probe with EAL
test: update bus and pci unit test cases
eal: enable PCI bus
eal: enable hotplugging of devices on bus
app/test/Makefile | 2 +-
app/test/test.h | 2 +
app/test/test_bus.c | 686 ++++++++++++++++++++++++
app/test/test_pci.c | 164 ++++--
lib/librte_eal/bsdapp/eal/Makefile | 1 +
lib/librte_eal/bsdapp/eal/eal.c | 13 +-
lib/librte_eal/bsdapp/eal/eal_pci.c | 17 +
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 15 +-
lib/librte_eal/common/Makefile | 2 +-
lib/librte_eal/common/eal_common_bus.c | 140 +++++
lib/librte_eal/common/eal_common_dev.c | 56 +-
lib/librte_eal/common/eal_common_pci.c | 334 ++++++++----
lib/librte_eal/common/eal_private.h | 10 -
lib/librte_eal/common/include/rte_bus.h | 200 +++++++
lib/librte_eal/common/include/rte_dev.h | 1 +
lib/librte_eal/common/include/rte_pci.h | 148 ++++-
lib/librte_eal/linuxapp/eal/Makefile | 1 +
lib/librte_eal/linuxapp/eal/eal.c | 13 +-
lib/librte_eal/linuxapp/eal/eal_pci.c | 57 +-
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 15 +-
20 files changed, 1632 insertions(+), 245 deletions(-)
create mode 100644 app/test/test_bus.c
create mode 100644 lib/librte_eal/common/eal_common_bus.c
create mode 100644 lib/librte_eal/common/include/rte_bus.h
--
2.7.4
next prev parent reply other threads:[~2017-01-17 10:06 UTC|newest]
Thread overview: 146+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-16 15:38 [dpdk-dev] [PATCH v6 0/8] " Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 1/8] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 2/8] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 3/8] pci: split match and probe function Shreyansh Jain
2017-01-16 18:24 ` Stephen Hemminger
2017-01-17 10:10 ` Shreyansh Jain
2017-01-16 19:53 ` Ferruh Yigit
2017-01-17 4:54 ` Shreyansh Jain
2017-01-17 9:58 ` Ferruh Yigit
2017-01-17 10:14 ` Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 4/8] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 5/8] eal: introduce bus scan and probe in EAL Shreyansh Jain
2017-01-16 19:58 ` Ferruh Yigit
2017-01-17 5:03 ` Shreyansh Jain
2017-01-17 23:04 ` Thomas Monjalon
2017-01-17 10:13 ` Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 6/8] test: update bus and pci unit test cases Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 7/8] eal: enable PCI bus Shreyansh Jain
2017-01-16 19:58 ` Ferruh Yigit
2017-01-17 5:04 ` Shreyansh Jain
2017-01-17 10:11 ` Shreyansh Jain
2017-01-16 15:38 ` [dpdk-dev] [PATCH v6 8/8] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-17 7:24 ` Shreyansh Jain
2017-01-16 18:27 ` [dpdk-dev] [PATCH v6 0/8] Introducing EAL Bus-Device-Driver Model Stephen Hemminger
2017-01-17 5:08 ` Shreyansh Jain
2017-01-17 5:09 ` Shreyansh Jain
2017-01-17 10:09 ` Shreyansh Jain [this message]
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 1/9] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 2/9] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 3/9] pci: split match and probe function Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 4/9] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 5/9] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 6/9] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 7/9] test: update bus and pci unit test cases Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 8/9] eal: enable PCI bus Shreyansh Jain
2017-01-17 10:09 ` [dpdk-dev] [PATCH v7 9/9] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-17 10:47 ` Ferruh Yigit
2017-01-17 11:04 ` Shreyansh Jain
2017-01-17 13:40 ` Shreyansh Jain
2017-01-17 10:50 ` [dpdk-dev] [PATCH v7 0/9] Introducing EAL Bus-Device-Driver Model Ferruh Yigit
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 " Shreyansh Jain
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 1/9] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-17 23:19 ` Thomas Monjalon
2017-01-18 5:12 ` Shreyansh Jain
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 2/9] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-17 23:23 ` Thomas Monjalon
2017-01-18 5:13 ` Shreyansh Jain
2017-01-18 6:56 ` Shreyansh Jain
2017-01-18 7:28 ` Thomas Monjalon
2017-01-18 8:42 ` Shreyansh Jain
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 3/9] pci: split match and probe function Shreyansh Jain
2017-01-17 23:31 ` Thomas Monjalon
2017-01-18 6:17 ` Shreyansh Jain
2017-01-18 7:31 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 4/9] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-17 23:37 ` Thomas Monjalon
2017-01-18 5:15 ` Shreyansh Jain
2017-01-18 7:32 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 5/9] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-17 23:38 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 6/9] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-17 23:44 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 7/9] test: update bus and pci unit test cases Shreyansh Jain
2017-01-17 23:46 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 8/9] eal: enable PCI bus Shreyansh Jain
2017-01-17 23:57 ` Thomas Monjalon
2017-01-17 13:37 ` [dpdk-dev] [PATCH v8 9/9] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-17 15:17 ` Ferruh Yigit
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 00/12] Introducing EAL Bus-Device-Driver Model Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 01/12] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-18 10:46 ` Thomas Monjalon
2017-01-18 10:52 ` Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 02/12] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 03/12] pci: split match and probe function Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 04/12] eal: remove loop over drivers in device detach Shreyansh Jain
2017-01-18 10:41 ` Shreyansh Jain
2017-01-18 11:12 ` Thomas Monjalon
2017-01-18 12:15 ` Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 05/12] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 06/12] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 07/12] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 08/12] eal/pci: add support for PCI bus Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 09/12] test: add test cases for scan and probe on BUS Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 10/12] test: add Bus based scan and probe test cases for PCI Shreyansh Jain
2017-01-18 10:37 ` [dpdk-dev] [PATCH v9 11/12] eal: enable PCI bus Shreyansh Jain
2017-01-18 10:38 ` [dpdk-dev] [PATCH v9 12/12] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-18 11:10 ` [dpdk-dev] [PATCH v9 00/12] Introducing EAL Bus-Device-Driver Model Thomas Monjalon
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 00/13] " Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 01/13] eal/bus: introduce bus abstraction Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 02/13] test: add basic bus infrastructure tests Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 03/13] pci: split match and probe function Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 04/13] eal: remove loop over drivers in device detach Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 05/13] eal/bus: support for scanning of bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 06/13] eal/bus: introduce support for bus probing Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 07/13] eal: integrate bus scan and probe with EAL Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 08/13] eal/pci: add support for PCI bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 09/13] test: add test cases for scan and probe on BUS Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 10/13] test: add Bus based scan and probe test cases for PCI Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 11/13] eal: enable PCI bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 12/13] eal: enable hotplugging of devices on bus Shreyansh Jain
2017-01-18 14:05 ` [dpdk-dev] [PATCH v10 13/13] doc: remove deprecation notice for rte_bus Shreyansh Jain
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 00/13] rte_bus + rte_pci_bus Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 01/13] bus: introduce bus abstraction Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 02/13] bus: add scanning Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 03/13] bus: add probing Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 04/13] app/test: check bus registration Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 05/13] app/test: check bus scan Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 06/13] app/test: check bus probe Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 07/13] pci: split match and probe Thomas Monjalon
2017-02-15 10:45 ` Jan Blunck
2017-02-15 11:22 ` Thomas Monjalon
2017-02-15 11:52 ` Shreyansh Jain
2017-02-15 11:30 ` Shreyansh Jain
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 08/13] pci: remove loop over drivers in device detach Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 09/13] pci: add bus driver Thomas Monjalon
2017-02-15 10:42 ` Jan Blunck
2017-02-15 11:20 ` Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 10/13] app/test: add PCI " Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 11/13] pci: use bus driver for scan/probe Thomas Monjalon
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 12/13] pci: use bus driver for attach/detach Thomas Monjalon
2017-02-15 11:08 ` Jan Blunck
2017-02-15 11:26 ` Thomas Monjalon
2017-02-15 11:39 ` Jan Blunck
2017-02-15 14:04 ` [dpdk-dev] [RFC] eal: use busname and devargs to attach devices Jan Blunck
2017-01-19 4:45 ` [dpdk-dev] [PATCH v11 13/13] doc: remove deprecation notice for rte_bus Thomas Monjalon
2017-01-19 17:40 ` Mcnamara, John
2017-01-19 4:50 ` [dpdk-dev] [PATCH v11 00/13] rte_bus + rte_pci_bus Thomas Monjalon
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 0/5] rte_bus_pci Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 1/5] pci: split match and probe Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 2/5] pci: remove loop over drivers in device detach Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 3/5] pci: add bus driver Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 4/5] pci: use bus driver for scan/probe Gaetan Rivet
2017-04-07 15:28 ` [dpdk-dev] [PATCH v12 5/5] test: remove pci tests Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 0/7] rte_bus_pci Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 1/7] test: remove pci tests Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 2/7] pci: split match and probe Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 3/7] pci: remove loop over drivers in device detach Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 4/7] pci: add bus driver Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 5/7] pci: use bus driver for scan/probe Gaetan Rivet
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 6/7] pci: use bus driver for attach/detach Gaetan Rivet
2017-04-14 8:43 ` Thomas Monjalon
2017-04-11 11:07 ` [dpdk-dev] [PATCH v13 7/7] doc: remove deprecation notice for rte_bus Gaetan Rivet
2017-04-11 11:32 ` Shreyansh Jain
2017-04-11 11:54 ` Gaëtan Rivet
2017-04-12 16:09 ` [dpdk-dev] [PATCH v13 0/7] rte_bus_pci Stephen Hemminger
2017-04-14 12:16 ` Thomas Monjalon
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