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openthread: add source address selection hook

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This commit is contained in:
zhangwenxu 2023-05-11 13:26:15 +08:00
parent bcb9e6b5eb
commit f3924e5aa8
3 changed files with 25 additions and 0 deletions
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23
components/openthread/port/esp_openthread_lwip_netif.c
View File

@ -15,6 +15,7 @@
#include "lwip/esp_netif_net_stack.h"
#include "lwip/netif.h"
#include "lwip/pbuf.h"
#include "lwip_default_hooks.h"
#include "openthread/error.h"
#include "openthread/ip6.h"
#include "openthread/link.h"
@ -143,3 +144,25 @@ static err_t openthread_netif_init(struct netif *netif)
return ERR_OK;
}
const ip_addr_t *lwip_hook_ip6_select_source_address(struct netif *netif, const ip6_addr_t *dest)
{
const ip6_addr_t *cur_addr;
uint8_t idx = 0;
// Only process with ot netif.
if (!(netif->name[0] == 'o' && netif->name[1] == 't')) {
return NULL;
}
// Currently, prefer the address with the same prefix of the destination address.
// If no address found, return NULL for selection source address using the default algorithm.
for (idx = 0; idx < LWIP_IPV6_NUM_ADDRESSES; idx++) {
if (!ip6_addr_isvalid(netif_ip6_addr_state(netif, idx))) {
continue;
}
cur_addr = netif_ip6_addr(netif, idx);
if (ip6_addr_netcmp_zoneless(cur_addr, dest)) {
return netif_ip_addr6(netif, idx);
}
}
return NULL;
}

1
examples/openthread/ot_br/sdkconfig.defaults
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@ -43,6 +43,7 @@ CONFIG_LWIP_NETIF_STATUS_CALLBACK=y
CONFIG_LWIP_HOOK_IP6_ROUTE_DEFAULT=y
CONFIG_LWIP_HOOK_ND6_GET_GW_DEFAULT=y
CONFIG_LWIP_HOOK_IP6_INPUT_CUSTOM=y
CONFIG_LWIP_HOOK_IP6_SELECT_SRC_ADDR_CUSTOM=y
CONFIG_LWIP_IPV6_AUTOCONFIG=y
# end of lwIP

1
examples/openthread/ot_cli/sdkconfig.defaults
View File

@ -43,6 +43,7 @@ CONFIG_OPENTHREAD_DNS64_CLIENT=y
CONFIG_LWIP_TCPIP_TASK_STACK_SIZE=4096
CONFIG_LWIP_IPV6_NUM_ADDRESSES=8
CONFIG_LWIP_MULTICAST_PING=y
CONFIG_LWIP_HOOK_IP6_SELECT_SRC_ADDR_CUSTOM=y
# end of lwIP
#