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Kconfig
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Kconfig
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# Kconfig - BSD Sockets compatible API
#
# Copyright (c) 2017 Linaro Limited.
#
# SPDX-License-Identifier: Apache-2.0
#
menuconfig NET_SOCKETS
bool "BSD Sockets compatible API"
help
Provide BSD Sockets like API on top of native Zephyr networking API.
if NET_SOCKETS
config NET_SOCKETS_POSIX_NAMES
bool "Standard POSIX names for Sockets API"
depends on !POSIX_API
help
By default, Sockets API function are prefixed with ``zsock_`` to avoid
namespacing issues. If this option is enabled, they will be provided
with standard POSIX names like socket(), recv(), and close(), to help
with porting existing code. Note that close() may require a special
attention, as in POSIX it closes any file descriptor, while with this
option enabled, it will still apply only to sockets.
config NET_SOCKETS_POLL_MAX
int "Max number of supported poll() entries"
default 3
help
Maximum number of entries supported for poll() call.
config NET_SOCKETS_DNS_TIMEOUT
int "Timeout value in milliseconds for DNS queries"
default 2000
range 1000 300000
depends on DNS_RESOLVER
help
This variable specifies time in milliseconds after which DNS
query is considered timeout. Minimum timeout is 1 second and
maximum timeout is 5 min.
config NET_SOCKETS_SOCKOPT_TLS
bool "Enable TCP TLS socket option support [EXPERIMENTAL]"
select TLS_CREDENTIALS
help
Enable TLS socket option support which automatically establishes
a TLS connection to the remote host.
config NET_SOCKETS_ENABLE_DTLS
bool "Enable DTLS socket support [EXPERIMENTAL]"
depends on NET_SOCKETS_SOCKOPT_TLS
select MBEDTLS_DTLS
help
Enable DTLS socket support. By default only TLS over TCP is supported.
config NET_SOCKETS_DTLS_TIMEOUT
int "Timeout value in milliseconds for DTLS connection"
default 5000
depends on NET_SOCKETS_ENABLE_DTLS
help
This variable specifies time in milliseconds after which DTLS
connection is considered dead by TLS server and DTLS resources are
freed. This is needed to prevent situation when DTLS client shuts down
without closing connection gracefully, which can prevent other peers
from connecting. Value of 0 indicates no timeout - resources will be
freed only when connection is gracefully closed by peer sending TLS
notification or socket is closed.
config NET_SOCKETS_TLS_MAX_CONTEXTS
int "Maximum number of TLS/DTLS contexts"
default 1
depends on NET_SOCKETS_SOCKOPT_TLS
help
"This variable specifies maximum number of TLS/DTLS contexts that can
be allocated at the same time."
config NET_SOCKETS_TLS_MAX_CREDENTIALS
int "Maximum number of TLS/DTLS credentials per socket"
default 4
depends on NET_SOCKETS_SOCKOPT_TLS
help
This variable sets maximum number of TLS/DTLS credentials that can be
used with a specific socket.
config NET_SOCKETS_TLS_MAX_CIPHERSUITES
int "Maximum number of TLS/DTLS ciphersuites per socket"
default 4
depends on NET_SOCKETS_SOCKOPT_TLS
help
This variable sets maximum number of TLS/DTLS ciphersuites that can
be used with specific socket, if set explicitly by socket option.
By default, all ciphersuites that are available in the system are
available to the socket.
config NET_SOCKETS_OFFLOAD
bool "Offload Socket APIs [EXPERIMENTAL]"
select NET_SOCKETS_POSIX_NAMES
help
Enables direct offloading of socket operations to dedicated TCP/IP
hardware.
This feature is intended to save resources by bypassing the Zephyr
TCP/IP stack in the case where there is only one network interface
required in the system, providing full BSD socket offload capability.
As a result, it bypasses any potential IP routing that Zephyr might
provide between multiple network interfaces.
See NET_OFFLOAD for a more deeply integrated approach which offloads
from the net_context() API within the Zephyr IP stack.
config NET_SOCKETS_PACKET
bool "Enable packet socket support"
depends on NET_L2_ETHERNET
help
This is an initial version of packet socket support (special type
raw socket). Packets are passed to and from the device driver
without any changes in the packet headers. It's API caller
responsibility to provide all the headers (e.g L2, L3 and so on)
while sending. While receiving, packets (including all the headers)
will be feed to sockets as it as from the driver.
config NET_SOCKETS_CAN
bool "Enable socket CAN support [EXPERIMENTAL]"
select NET_L2_CANBUS
help
The value depends on your network needs.
config NET_SOCKETS_CAN_RECEIVERS
int "How many simultaneous SocketCAN receivers are allowed"
default 1
depends on NET_SOCKETS_CAN
help
The value tells how many sockets can receive data from same
Socket-CAN interface.
module = NET_SOCKETS
module-dep = NET_LOG
module-str = Log level for BSD sockets compatible API calls
module-help = Enables logging for sockets code.
source "subsys/net/Kconfig.template.log_config.net"
endif # NET_SOCKETS