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Merge pull request #21437 from benpicco/CONFIG_GNRC_IPV6_NIB_SOL_ROUTER

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gnrc/ipv6/nib: add option to disable router solicitations
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benpicco 2025-04-28 16:08:10 +00:00 committed by GitHub
commit d973ca18a9
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2 changed files with 98 additions and 86 deletions
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10
sys/include/net/gnrc/ipv6/nib/conf.h
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@ -50,9 +50,8 @@ extern "C" {
# ifndef CONFIG_GNRC_IPV6_NIB_6LN # ifndef CONFIG_GNRC_IPV6_NIB_6LN
# define CONFIG_GNRC_IPV6_NIB_6LN 1 # define CONFIG_GNRC_IPV6_NIB_6LN 1
# endif # endif
/* We are only a 6lo node with no 'classic' IPv6 interface */
# ifndef MODULE_GNRC_IPV6_CLASSIC # ifndef MODULE_GNRC_IPV6_CLASSIC
/* We are only a 6lo node with no 'classic' IPv6 interface */
# ifndef CONFIG_GNRC_IPV6_NIB_QUEUE_PKT # ifndef CONFIG_GNRC_IPV6_NIB_QUEUE_PKT
# define CONFIG_GNRC_IPV6_NIB_QUEUE_PKT 0 # define CONFIG_GNRC_IPV6_NIB_QUEUE_PKT 0
# endif # endif
@ -131,6 +130,13 @@ extern "C" {
# define CONFIG_GNRC_IPV6_NIB_ADV_ROUTER 0 # define CONFIG_GNRC_IPV6_NIB_ADV_ROUTER 0
#endif #endif
/**
* @brief enable periodic router solicitations
*/
#ifndef CONFIG_GNRC_IPV6_NIB_SOL_ROUTER
# define CONFIG_GNRC_IPV6_NIB_SOL_ROUTER 1
#endif
/** /**
* @brief Include a Route Information Option for subnets * @brief Include a Route Information Option for subnets
* on other interfaces in normal Router Advertisements * on other interfaces in normal Router Advertisements

14
sys/net/gnrc/network_layer/ipv6/nib/nib.c
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@ -105,11 +105,17 @@ static void _handle_rdnss_timeout(sock_udp_ep_t *dns_server);
static inline bool _should_search_rtr(const gnrc_netif_t *netif) static inline bool _should_search_rtr(const gnrc_netif_t *netif)
{ {
/* 6LBR interface does not send RS. /* RS are globally disabled */
A non-advertising router sends RS or a 6LN that is advertising or not if (!CONFIG_GNRC_IPV6_NIB_SOL_ROUTER) {
return false;
}
/* 6LBR interface does not send RS. */
if (gnrc_netif_is_6lbr(netif)) {
return false;
}
/* A non-advertising router sends RS or a 6LN that is advertising or not
has to refetch router information */ has to refetch router information */
return !gnrc_netif_is_6lbr(netif) && return !gnrc_netif_is_rtr_adv(netif) || gnrc_netif_is_6ln(netif);
(!gnrc_netif_is_rtr_adv(netif) || gnrc_netif_is_6ln(netif));
} }
void gnrc_ipv6_nib_init(void) void gnrc_ipv6_nib_init(void)