lib: net_buf: rename header file from zephyr/net/buf.h to zephyr/net_buf.h

Move the network buffer header file from zephyr/net/buf.h to
zephyr/net_buf.h as the implementation now lives outside of the networking
subsystem.

Add (deprecated) zephyr/net/buf.h header to maintain compatibility with old
file path.

Signed-off-by: Henrik Brix Andersen <[email protected]>

Author: henrikbrixandersen

MAINTAINERS.yml

@@ -2845,6 +2845,7 @@ Networking:
     - jukkar
   files:
     - include/zephyr/net/buf.h
+    - include/zephyr/net_buf.h
     - lib/net_buf/
     - tests/net/buf/
   labels:

doc/connectivity/networking/api/net_buf.rst

@@ -13,7 +13,7 @@ Overview
 
 Network buffers are a core concept of how the networking stack
 (as well as the Bluetooth stack) pass data around. The API for them is
-defined in :zephyr_file:`include/zephyr/net/buf.h`:.
+defined in :zephyr_file:`include/zephyr/net_buf.h`:.
 
 Creating buffers
 ****************

doc/services/zbus/index.rst

@@ -397,7 +397,7 @@ rate by following design tips:
 * Consider using message queues or pipes for intensive byte transfers.
 
 .. warning::
-   ZBus uses :zephyr_file:`include/zephyr/net/buf.h` (network buffers) to exchange data with message
+   ZBus uses :zephyr_file:`include/zephyr/net_buf.h` (network buffers) to exchange data with message
    subscribers. Thus, choose carefully the configurations
    :kconfig:option:`CONFIG_ZBUS_MSG_SUBSCRIBER_NET_BUF_POOL_SIZE` and
    :kconfig:option:`CONFIG_HEAP_MEM_POOL_SIZE`. They are crucial to a proper VDED execution

drivers/modem/modem_cmd_handler.c

@@ -15,7 +15,7 @@ LOG_MODULE_REGISTER(modem_cmd_handler, CONFIG_MODEM_LOG_LEVEL);
 
 #include <zephyr/kernel.h>
 #include <stddef.h>
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 
 #include "modem_context.h"
 #include "modem_cmd_handler.h"

drivers/modem/modem_context.h

@@ -15,7 +15,7 @@
 #define ZEPHYR_INCLUDE_DRIVERS_MODEM_MODEM_CONTEXT_H_
 
 #include <zephyr/kernel.h>
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 #include <zephyr/net/net_ip.h>
 #include <zephyr/sys/ring_buffer.h>
 #include <zephyr/drivers/gpio.h>

drivers/net/loopback.c

@@ -18,7 +18,7 @@
 LOG_MODULE_REGISTER(LOG_MODULE_NAME);
 
 #include <zephyr/net/net_pkt.h>
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 #include <zephyr/net/net_ip.h>
 #include <zephyr/net/net_if.h>
 #include <zephyr/net/loopback.h>

drivers/net/ppp.c

@@ -23,7 +23,7 @@ LOG_MODULE_REGISTER(net_ppp, LOG_LEVEL);
 #include <errno.h>
 #include <stddef.h>
 #include <zephyr/net/ppp.h>
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 #include <zephyr/net/net_pkt.h>
 #include <zephyr/net/net_if.h>
 #include <zephyr/net/net_core.h>

drivers/net/slip.h

@@ -8,7 +8,7 @@
 #include <stdbool.h>
 
 #include <zephyr/device.h>
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 #include <zephyr/net/net_pkt.h>
 #include <zephyr/net/net_if.h>
 

drivers/usb/udc/udc_common.c

@@ -6,7 +6,7 @@
 
 #include <zephyr/init.h>
 #include <zephyr/kernel.h>
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 #include <zephyr/sys/byteorder.h>
 #include <zephyr/sys/__assert.h>
 #include <zephyr/usb/usb_ch9.h>

include/zephyr/bluetooth/audio/bap.h

@@ -33,7 +33,7 @@
 #include <zephyr/bluetooth/bluetooth.h>
 #include <zephyr/bluetooth/conn.h>
 #include <zephyr/bluetooth/iso.h>
-#include <zephyr/net/buf.h>
+#include <zephyr/net_buf.h>
 #include <zephyr/sys/slist.h>
 
 #ifdef __cplusplus