修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/can/Kconfig
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+# SPDX-License-Identifier: GPL-2.0-only
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 #
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 # Controller Area Network (CAN) network layer core configuration
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 #
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 menuconfig CAN
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 	depends on NET
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 	tristate "CAN bus subsystem support"
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-	---help---
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+	help
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 	  Controller Area Network (CAN) is a slow (up to 1Mbit/s) serial
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-	  communications protocol which was developed by Bosch in
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-	  1991, mainly for automotive, but now widely used in marine
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-	  (NMEA2000), industrial, and medical applications.
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-	  More information on the CAN network protocol family PF_CAN
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-	  is contained in <Documentation/networking/can.rst>.
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+	  communications protocol. Development of the CAN bus started in
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+	  1983 at Robert Bosch GmbH, and the protocol was officially
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+	  released in 1986. The CAN bus was originally mainly for automotive,
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+	  but is now widely used in marine (NMEA2000), industrial, and medical
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+	  applications. More information on the CAN network protocol family
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+	  PF_CAN is contained in <Documentation/networking/can.rst>.
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 	  If you want CAN support you should say Y here and also to the
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 	  specific driver for your controller(s) below.
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 config CAN_RAW
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 	tristate "Raw CAN Protocol (raw access with CAN-ID filtering)"
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 	default y
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-	---help---
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+	help
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 	  The raw CAN protocol option offers access to the CAN bus via
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 	  the BSD socket API. You probably want to use the raw socket in
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 	  most cases where no higher level protocol is being used. The raw
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 config CAN_BCM
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 	tristate "Broadcast Manager CAN Protocol (with content filtering)"
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 	default y
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-	---help---
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+	help
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 	  The Broadcast Manager offers content filtering, timeout monitoring,
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 	  sending of RTR frames, and cyclic CAN messages without permanent user
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 	  interaction. The BCM can be 'programmed' via the BSD socket API and
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 config CAN_GW
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 	tristate "CAN Gateway/Router (with netlink configuration)"
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 	default y
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-	---help---
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+	help
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 	  The CAN Gateway/Router is used to route (and modify) CAN frames.
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 	  It is based on the PF_CAN core infrastructure for msg filtering and
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 	  msg sending and can optionally modify routed CAN frames on the fly.
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@@ -51,6 +53,23 @@
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 	  They can be modified with AND/OR/XOR/SET operations as configured
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 	  by the netlink configuration interface known e.g. from iptables.
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+source "net/can/j1939/Kconfig"
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+
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+config CAN_ISOTP
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+	tristate "ISO 15765-2:2016 CAN transport protocol"
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+	help
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+	  CAN Transport Protocols offer support for segmented Point-to-Point
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+	  communication between CAN nodes via two defined CAN Identifiers.
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+	  As CAN frames can only transport a small amount of data bytes
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+	  (max. 8 bytes for 'classic' CAN and max. 64 bytes for CAN FD) this
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+	  segmentation is needed to transport longer Protocol Data Units (PDU)
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+	  as needed e.g. for vehicle diagnosis (UDS, ISO 14229) or IP-over-CAN
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+	  traffic.
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+	  This protocol driver implements data transfers according to
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+	  ISO 15765-2:2016 for 'classic' CAN and CAN FD frame types.
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+	  If you want to perform automotive vehicle diagnostic services (UDS),
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+	  say 'y'.
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+
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 source "drivers/net/can/Kconfig"
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 endif