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gnrc_uhcpc: remove old prefix before adding new

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This commit is contained in:
Martine S. Lenders 2020-03-05 13:08:28 +01:00
parent 1a30b8f40f
commit f626e5e7ef
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GPG Key ID: CCD317364F63286F
1 changed files with 11 additions and 15 deletions
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26
sys/net/gnrc/application_layer/uhcpc/gnrc_uhcpc.c
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@ -135,7 +135,17 @@ void uhcp_handle_prefix(uint8_t *prefix, uint8_t prefix_len, uint16_t lifetime,
#endif #endif
return; return;
} }
else if (!ipv6_addr_is_unspecified(&_prefix)) {
gnrc_netapi_set(gnrc_wireless_interface, NETOPT_IPV6_ADDR_REMOVE, 0,
&_prefix, sizeof(_prefix));
#if defined(MODULE_GNRC_IPV6_NIB) && GNRC_IPV6_NIB_CONF_6LBR && \
GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
gnrc_ipv6_nib_abr_del(&_prefix);
#endif
LOG_INFO("gnrc_uhcpc: uhcp_handle_prefix(): removed old prefix %s/64\n",
ipv6_addr_to_str(addr_str, &_prefix, sizeof(addr_str)));
}
memcpy(&_prefix, prefix, sizeof(_prefix));
gnrc_netapi_set(gnrc_wireless_interface, NETOPT_IPV6_ADDR, (64 << 8), gnrc_netapi_set(gnrc_wireless_interface, NETOPT_IPV6_ADDR, (64 << 8),
/* always update 6LoWPAN compression context so it does not time out, we /* always update 6LoWPAN compression context so it does not time out, we
* can't just remove it anyway according to the RFC */ * can't just remove it anyway according to the RFC */
@ -152,28 +162,14 @@ void uhcp_handle_prefix(uint8_t *prefix, uint8_t prefix_len, uint16_t lifetime,
} }
gnrc_rpl_root_init(GNRC_RPL_DEFAULT_INSTANCE, (ipv6_addr_t*)prefix, false, false); gnrc_rpl_root_init(GNRC_RPL_DEFAULT_INSTANCE, (ipv6_addr_t*)prefix, false, false);
#endif #endif
gnrc_netapi_set(gnrc_wireless_interface, NETOPT_IPV6_ADDR_REMOVE, 0,
&_prefix, sizeof(_prefix));
LOG_INFO("gnrc_uhcpc: uhcp_handle_prefix(): configured new prefix %s/64\n", LOG_INFO("gnrc_uhcpc: uhcp_handle_prefix(): configured new prefix %s/64\n",
ipv6_addr_to_str(addr_str, (ipv6_addr_t *)prefix, sizeof(addr_str))); ipv6_addr_to_str(addr_str, (ipv6_addr_t *)prefix, sizeof(addr_str)));
if (!ipv6_addr_is_unspecified(&_prefix)) {
gnrc_netapi_set(gnrc_wireless_interface, NETOPT_IPV6_ADDR_REMOVE, 0,
&_prefix, sizeof(_prefix));
#if defined(MODULE_GNRC_IPV6_NIB) && GNRC_IPV6_NIB_CONF_6LBR && \
GNRC_IPV6_NIB_CONF_MULTIHOP_P6C
gnrc_ipv6_nib_abr_del(&_prefix);
#endif
LOG_INFO("gnrc_uhcpc: uhcp_handle_prefix(): removed old prefix %s/64\n",
ipv6_addr_to_str(addr_str, &_prefix, sizeof(addr_str)));
}
#ifdef MODULE_GNRC_SIXLOWPAN_CTX #ifdef MODULE_GNRC_SIXLOWPAN_CTX
/* update compression context last in case previous context was removed by /* update compression context last in case previous context was removed by
* gnrc_ipv6_nib_abr_del() above */ * gnrc_ipv6_nib_abr_del() above */
_update_6ctx((ipv6_addr_t *)prefix, 64); _update_6ctx((ipv6_addr_t *)prefix, 64);
#endif #endif
memcpy(&_prefix, prefix, 16);
} }
extern void uhcp_client(uhcp_iface_t iface); extern void uhcp_client(uhcp_iface_t iface);