Commit ced80b13 authored by Henrik Brix Andersen's avatar Henrik Brix Andersen Committed by Mahesh Mahadevan
Browse files

lib: net_buf: move the network buffer implementation to lib 



Move the net_buf implementation from the networking subsystem to a library
as they have no dependency on the networking subsystem.

Network buffers are used in subsystems outside of networking
(e.g. Bluetooth, USB).

Fixes: #36374

Signed-off-by: default avatarHenrik Brix Andersen <henrik@brixandersen.dk>
parent cfc010ff

MAINTAINERS.yml

+1 −2
Original line number Diff line number Diff line
@@ -2803,7 +2803,6 @@ Networking: 
    - samples/net/lwm2m_client/

    - samples/net/wifi/

    - samples/net/dhcpv4_client/

    - subsys/net/buf*.c

    - subsys/net/l2/ethernet/gptp/

    - subsys/net/l2/ieee802154/

    - subsys/net/l2/wifi/
@@ -2846,7 +2845,7 @@ Networking: 
    - jukkar

  files:

    - include/zephyr/net/buf.h

    - subsys/net/buf*.c

    - lib/net_buf/

    - tests/net/buf/

  labels:

    - "area: Networking Buffers"

lib/CMakeLists.txt

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ add_subdirectory_ifdef(CONFIG_CPP cpp) 
add_subdirectory(hash)

add_subdirectory(heap)

add_subdirectory(mem_blocks)

add_subdirectory_ifdef(CONFIG_NET_BUF net_buf)

add_subdirectory(os)

add_subdirectory(utils)

add_subdirectory_ifdef(CONFIG_SMF smf)

lib/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ source "lib/heap/Kconfig" 


source "lib/mem_blocks/Kconfig"



source "lib/net_buf/Kconfig"



source "lib/os/Kconfig"



source "lib/posix/Kconfig"

lib/net_buf/CMakeLists.txt

0 → 100644
+8 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: Apache-2.0



zephyr_library()

zephyr_library_sources_ifdef(

  CONFIG_NET_BUF

  buf.c

  buf_simple.c

  )

lib/net_buf/Kconfig

0 → 100644
+62 −0
Original line number Diff line number Diff line 
# Network buffer configuration options



# Copyright (c) 2015 Intel Corporation

# SPDX-License-Identifier: Apache-2.0



menuconfig NET_BUF

	bool "Network buffer support"

	help

	  This option enables support for generic network protocol

	  buffers.



if NET_BUF



config NET_BUF_LOG

	bool "Network buffer logging"

	select LOG

	help

	  Enable logs and checks for the generic network buffers.



module = NET_BUF

module-str = net_buf

source "subsys/logging/Kconfig.template.log_config"



if NET_BUF_LOG



config NET_BUF_WARN_ALLOC_INTERVAL

	int "Interval of Network buffer allocation warnings"

	default 1

	range 0 60

	help

	  Interval in seconds of Network buffer allocation warnings which are

	  generated when a buffer cannot immediately be allocated with K_FOREVER

	  which may lead to deadlocks. Setting it to 0 makes warnings to be

	  printed only once per allocation.



config NET_BUF_SIMPLE_LOG

	bool "Network buffer memory debugging"

	select LOG

	help

	  Enable extra debug logs and checks for the generic network buffers.



endif # NET_BUF_LOG



config NET_BUF_POOL_USAGE

	bool "Network buffer pool usage tracking"

	help

	  Enable network buffer pool tracking. This means that:

	  * amount of free buffers in the pool is remembered

	  * total size of the pool is calculated

	  * pool name is stored and can be shown in debugging prints



config NET_BUF_ALIGNMENT

	int "Network buffer alignment restriction"

	default 0

	help

	  Alignment restriction for network buffers. This is useful for

	  some hardware IP with DMA that requires the buffers to be aligned

	  to a certain byte boundary, or dealing with cache line restrictions.

	  Default value of 0 means the alignment will be the size of a void pointer,

	  any other value will force the alignment of a net buffer in bytes.



endif # NET_BUF

CRA Git | Maintained and supported by SUSTech CRA and CCSE