# Copyright (c) 2020 HAW Hamburg
#
# This file is subject to the terms and conditions of the GNU Lesser
# General Public License v2.1. See the file LICENSE in the top level
# directory for more details.
#
menuconfig KCONFIG_USEMODULE_GNRC_IPV6_NIB
    bool "Configure GNRC IPv6 NIB"

if KCONFIG_USEMODULE_GNRC_IPV6_NIB

config GNRC_IPV6_NIB_6LBR
    bool "6LoWPAN border router features"
    default y if USEMODULE_GNRC_IPV6_NIB_6LBR
    help
        Enable 6LoWPAN Border Router (6LBR) features.
        @see https://tools.ietf.org/html/rfc6775#section-2

config GNRC_IPV6_NIB_6LR
    bool "6LoWPAN router features"
    default y if USEMODULE_GNRC_IPV6_NIB_6LR || GNRC_IPV6_NIB_6LBR
    help
        Enable 6LoWPAN Router (6LR) features.
        @see https://tools.ietf.org/html/rfc6775#section-2

config GNRC_IPV6_NIB_6LN
    bool "6LoWPAN node features"
    default y if USEMODULE_GNRC_IPV6_NIB_6LN || GNRC_IPV6_NIB_6LR
    help
        Enable 6LoWPAN Node (6LN) features.
        @see https://tools.ietf.org/html/rfc6775#section-2

config GNRC_IPV6_NIB_ROUTER
    bool "Router features"
    default y if USEMODULE_GNRC_IPV6_NIB_ROUTER || GNRC_IPV6_NIB_6LR

config GNRC_IPV6_NIB_SLAAC
    bool "Stateless address auto-configuration"
    default y if USEMODULE_GNRC_IPV6_NIB_6LBR
    default n if USEMODULE_GNRC_IPV6_NIB_6LR || USEMODULE_GNRC_IPV6_NIB_6LN
    default y

config GNRC_IPV6_NIB_QUEUE_PKT
    bool "Use packet queue with address resolution"
    default n if USEMODULE_GNRC_IPV6_NIB_6LN || GNRC_IPV6_NIB_6LN
    default y

config GNRC_IPV6_NIB_ARSM
    bool "Use classic NDP address resolution state-machine"
    default n if USEMODULE_GNRC_IPV6_NIB_6LN && !GNRC_IPV6_NIB_6LR
    default y

config GNRC_IPV6_NIB_DNS
    bool "Support for DNS configuration options"
    default y if USEMODULE_GNRC_IPV6_NIB_DNS

config GNRC_IPV6_NIB_ADV_ROUTER
    bool "Activate router advertising at interface start-up"
    default y if GNRC_IPV6_NIB_ROUTER && (!GNRC_IPV6_NIB_6LR || GNRC_IPV6_NIB_6LBR)

config GNRC_IPV6_NIB_DC
    bool "Destination cache"

config GNRC_IPV6_NIB_MULTIHOP_P6C
    bool "Multihop prefix and 6LoWPAN context distribution"
    default y if GNRC_IPV6_NIB_6LR

config GNRC_IPV6_NIB_NO_RTR_SOL
    bool "Disable router solicitations"
    help
        @warning Only set this if you know what you're doing.

if GNRC_IPV6_NIB_NO_RTR_SOL
comment "Disabling router solicitations will make your host have to wait longer"
comment "for router advertisements. This option is only meant for testing and"
comment "experimentation and should not be activated in production."
endif

config GNRC_IPV6_NIB_NUMOF
    int "Number of entries in NIB"
    default 16 if USEMODULE_GNRC_IPV6_NIB_6LBR
    default 1 if USEMODULE_GNRC_IPV6_NIB_6LN && !GNRC_IPV6_NIB_6LR
    default 4

config GNRC_IPV6_NIB_REACH_TIME_RESET
    int "Reset time for the reachability time (milliseconds)"
    default 7200000
    help
        @see [RFC 4861, section 6.3.4](https://tools.ietf.org/html/rfc4861#section-6.3.4).

config GNRC_IPV6_NIB_L2ADDR_MAX_LEN
    int "Maximum link-layer address length (aligned)"
    default 8

config GNRC_IPV6_NIB_DEFAULT_ROUTER_NUMOF
    int "Number of default routers in the default router list"
    default 1
    help
        @attention This number has direct influence on the maximum number of
        neighbors and duplicate address detection table entries.

config GNRC_IPV6_NIB_OFFL_NUMOF
    int "Number of off-link entries in NIB"
    default 8
    help
        @attention This number is equal to the maximum number of forwarding
        table and prefix list entries in NIB.

config GNRC_IPV6_NIB_ABR_NUMOF
    int "Number of authoritative border router entries in NIB"
    default 1
    depends on GNRC_IPV6_NIB_MULTIHOP_P6C
    help
        @warning Behavior for >2 currently not specified or tested.

if GNRC_IPV6_NIB_ABR_NUMOF > 2
comment "Warning: Behavior for more than 2 Authoritative Border Router entries"
comment "is currently not specified or tested."
endif

endif # KCONFIG_USEMODULE_GNRC_IPV6_NIB