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renew6: Optimize the process of obtaining an IPv6 address.
If Managed Address Congfiguration flag in the Router Advertisement Messsage is set, we would obtain the IPv6 address though the stateful DHCPv6 procedure. Signed-off-by: liqinhui <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,172 @@ | ||
| /**************************************************************************** | ||
| * apps/netutils/netlib/netlib_obtainipv6addr.c | ||
| * | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. The | ||
| * ASF licenses this file to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance with the | ||
| * License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the | ||
| * License for the specific language governing permissions and limitations | ||
| * under the License. | ||
| * | ||
| ****************************************************************************/ | ||
|
|
||
| /**************************************************************************** | ||
| * Included Files | ||
| ****************************************************************************/ | ||
|
|
||
| #include <nuttx/config.h> | ||
| #include <sys/socket.h> | ||
| #include <sys/ioctl.h> | ||
| #include <unistd.h> | ||
| #include <string.h> | ||
| #include <errno.h> | ||
| #include <debug.h> | ||
|
|
||
| #include <netinet/in.h> | ||
| #include <net/if.h> | ||
| #include <nuttx/net/dns.h> | ||
|
|
||
| #include "netutils/netlib.h" | ||
| #include "netutils/dhcp6c.h" | ||
|
|
||
| /**************************************************************************** | ||
| * Private Functions | ||
| ****************************************************************************/ | ||
|
|
||
| static void icmpv6_linkipaddr_6(FAR const uint8_t *mac, FAR uint16_t *ipaddr) | ||
| { | ||
| ipaddr[0] = HTONS(0xfe80); | ||
| ipaddr[1] = 0; | ||
| ipaddr[2] = 0; | ||
| ipaddr[3] = 0; | ||
| ipaddr[4] = HTONS(mac[0] << 8 | mac[1]); | ||
| ipaddr[5] = HTONS(mac[2] << 8 | 0x00ff); | ||
| ipaddr[6] = HTONS(0x00fe << 8 | mac[3]); | ||
| ipaddr[7] = HTONS(mac[4] << 8 | mac[5]); | ||
| ipaddr[4] ^= HTONS(0x0200); | ||
| } | ||
|
|
||
| static void dhcpv6_set_lladdr(FAR const char *ifname) | ||
| { | ||
| struct in6_addr addr6; | ||
| uint8_t mac[IFHWADDRLEN]; | ||
|
|
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| /* Get the MAC address of the NIC */ | ||
|
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| netlib_getmacaddr(ifname, mac); | ||
|
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| /* Set the Link Local Address of the NIC */ | ||
|
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| icmpv6_linkipaddr_6(mac, (uint16_t *)&addr6); | ||
| netlib_set_ipv6addr(ifname, &addr6); | ||
| netlib_prefix2ipv6netmask(64, &addr6); | ||
| } | ||
|
|
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| static int dhcpv6_setup_result(FAR const char *ifname, | ||
| FAR struct dhcp6c_state *presult) | ||
| { | ||
| int ret; | ||
|
|
||
| ret = netlib_set_ipv6addr(ifname, &presult->addr); | ||
| if (ret != OK) | ||
| { | ||
| nerr("netlib_set_ipv6addr fail\n"); | ||
| return ret; | ||
| } | ||
|
|
||
| ret = netlib_set_ipv6netmask(ifname, &presult->netmask); | ||
| if (ret != OK) | ||
| { | ||
| nerr("netlib_set_ipv6netmask fail\n"); | ||
| return ret; | ||
| } | ||
|
|
||
| ret = netlib_set_ipv6dnsaddr(&presult->dns); | ||
| if (ret != OK) | ||
| { | ||
| nerr("netlib_set_ipv6dnsaddr fail\n"); | ||
| return ret; | ||
| } | ||
|
|
||
| return ret; | ||
| } | ||
|
|
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| static int dhcpv6_obtain_statefuladdr(FAR const char *ifname) | ||
| { | ||
| void *handle = NULL; | ||
| struct dhcp6c_state result; | ||
| int ret; | ||
|
|
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| memset(&result, 0, sizeof(result)); | ||
| dhcpv6_set_lladdr(ifname); | ||
| handle = dhcp6c_open(ifname); | ||
|
|
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| ret = dhcp6c_request(handle, &result); | ||
| if (ret == OK) | ||
| { | ||
| dhcpv6_setup_result(ifname, &result); | ||
| } | ||
| else | ||
| { | ||
| nerr("dhcp6c_request fail\n"); | ||
| } | ||
|
|
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| dhcp6c_close(handle); | ||
| return ret; | ||
| } | ||
|
|
||
| /**************************************************************************** | ||
| * Public Functions | ||
| ****************************************************************************/ | ||
|
|
||
| /**************************************************************************** | ||
| * Name: netlib_obtain_ipv6addr | ||
| * | ||
| * Description: | ||
| * Perform ICMPv6 auto-configuration and DHCPv6 in an attempt to | ||
| * get the IP address of the specified network device. | ||
| * | ||
| * Parameters: | ||
| * ifname The name of the interface | ||
| * | ||
| * Return: | ||
| * 0 on success; negative integer on failure | ||
| * | ||
| ****************************************************************************/ | ||
|
|
||
| int netlib_obtain_ipv6addr(FAR const char *ifname) | ||
| { | ||
| int ret; | ||
|
|
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| if (!ifname) | ||
| { | ||
| /* No interface name */ | ||
|
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| errno = EINVAL; | ||
| return ERROR; | ||
| } | ||
|
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| ret = netlib_icmpv6_autoconfiguration(ifname); | ||
| if (ret) | ||
| { | ||
| if (errno == EADDRNOTAVAIL) | ||
| { | ||
| ninfo("obtain IPv6 address by dhcpv6\n"); | ||
| ret = dhcpv6_obtain_statefuladdr(ifname); | ||
| } | ||
| else | ||
| { | ||
| nerr("netlib_icmpv6_autoconfiguration fail\n"); | ||
| } | ||
| } | ||
|
|
||
| return ret; | ||
| } |
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