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Revert changes of 07434aa73a (accidentally committed local changes)
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goldsimon
parent
de5b693e7d
commit
8fc69c9858
@ -1,10 +1,11 @@
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/**
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/**
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* @file
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* @file
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* DHCPv6 - RFC 3315
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*
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* DHCPv6.
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*/
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*/
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/*
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/*
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* Copyright (c) 2017 Simon Goldschmidt
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* Copyright (c) 2010 Inico Technologies Ltd.
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* All rights reserved.
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* All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* Redistribution and use in source and binary forms, with or without modification,
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@ -31,255 +32,19 @@
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*
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*
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* This file is part of the lwIP TCP/IP stack.
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* This file is part of the lwIP TCP/IP stack.
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*
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*
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* Author: Simon Goldschmidt <goldsimon@gmx.de>
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* Author: Ivan Delamer <delamer@inicotech.com>
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*
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*
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* Please coordinate changes and requests with Ivan Delamer
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* <delamer@inicotech.com>
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*/
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*/
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#include "lwip/opt.h"
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#include "lwip/opt.h"
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#if LWIP_IPV6 && LWIP_IPV6_DHCP6 /* don't build if not configured for use in lwipopts.h */
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#if LWIP_IPV6 && LWIP_IPV6_DHCP6 /* don't build if not configured for use in lwipopts.h */
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#include "lwip/dhcp6.h"
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#include "lwip/ip6_addr.h"
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#include "lwip/prot/dhcp6.h"
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#include "lwip/def.h"
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#include "lwip/def.h"
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#include "lwip/udp.h"
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#include <string.h>
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#ifdef LWIP_HOOK_FILENAME
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#include LWIP_HOOK_FILENAME
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#endif
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#ifndef LWIP_HOOK_DHCP6_APPEND_OPTIONS
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#define LWIP_HOOK_DHCP6_APPEND_OPTIONS(netif, dhcp6, state, msg, msg_type)
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#endif
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#ifndef LWIP_HOOK_DHCP6_PARSE_OPTION
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#define LWIP_HOOK_DHCP6_PARSE_OPTION(netif, dhcp6, state, msg, msg_type, option, len, pbuf, offset)
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#endif
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const ip_addr_t dhcp6_All_DHCP_Relay_Agents_and_Servers = IPADDR6_INIT_HOST(0xFF020000, 0, 0, 0x00010002);
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const ip_addr_t dhcp6_All_DHCP_Servers = IPADDR6_INIT_HOST(0xFF020000, 0, 0, 0x00010003);
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static struct udp_pcb *dhcp6_pcb;
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static u8_t dhcp6_pcb_refcount;
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/* receive, unfold, parse and free incoming messages */
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static void dhcp6_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port);
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/** Ensure DHCP PCB is allocated and bound */
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static err_t
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dhcp6_inc_pcb_refcount(void)
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{
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if (dhcp6_pcb_refcount == 0) {
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LWIP_ASSERT("dhcp6_inc_pcb_refcount(): memory leak", dhcp6_pcb == NULL);
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/* allocate UDP PCB */
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dhcp6_pcb = udp_new();
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if (dhcp6_pcb == NULL) {
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return ERR_MEM;
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}
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ip_set_option(dhcp6_pcb, SOF_BROADCAST);
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/* set up local and remote port for the pcb -> listen on all interfaces on all src/dest IPs */
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udp_bind(dhcp6_pcb, IP6_ADDR_ANY, DHCP6_CLIENT_PORT);
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udp_recv(dhcp6_pcb, dhcp6_recv, NULL);
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}
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dhcp6_pcb_refcount++;
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return ERR_OK;
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}
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/** Free DHCP PCB if the last netif stops using it */
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static void
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dhcp6_dec_pcb_refcount(void)
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{
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LWIP_ASSERT("dhcp6_pcb_refcount(): refcount error", (dhcp6_pcb_refcount > 0));
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dhcp6_pcb_refcount--;
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if (dhcp6_pcb_refcount == 0) {
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udp_remove(dhcp6_pcb);
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dhcp6_pcb = NULL;
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}
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}
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/**
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* @ingroup dhcp6
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* Set a statically allocated struct dhcp6 to work with.
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* Using this prevents dhcp6_start to allocate it using mem_malloc.
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*
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* @param netif the netif for which to set the struct dhcp
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* @param dhcp6 (uninitialised) dhcp6 struct allocated by the application
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*/
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void
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dhcp6_set_struct(struct netif *netif, struct dhcp6 *dhcp6)
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{
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LWIP_ASSERT("netif != NULL", netif != NULL);
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LWIP_ASSERT("dhcp6 != NULL", dhcp6 != NULL);
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LWIP_ASSERT("netif already has a struct dhcp6 set", netif_dhcp6_data(netif) == NULL);
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/* clear data structure */
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memset(dhcp6, 0, sizeof(struct dhcp6));
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/* dhcp_set_state(&dhcp, DHCP_STATE_OFF); */
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netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, dhcp6);
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}
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/**
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* @ingroup dhcp6
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* Removes a struct dhcp6 from a netif.
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*
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* ATTENTION: Only use this when not using dhcp6_set_struct() to allocate the
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* struct dhcp6 since the memory is passed back to the heap.
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*
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* @param netif the netif from which to remove the struct dhcp
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*/
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void dhcp6_cleanup(struct netif *netif)
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{
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LWIP_ASSERT("netif != NULL", netif != NULL);
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if (netif_dhcp6_data(netif) != NULL) {
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mem_free(netif_dhcp6_data(netif));
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netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, NULL);
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}
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}
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static struct dhcp6*
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dhcp6_get_struct(struct netif *netif, const char *dbg_requester)
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{
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struct dhcp6 *dhcp6 = netif_dhcp6_data(netif);
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if (dhcp6 == NULL) {
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LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("%s: mallocing new DHCPv6 client\n", dbg_requester));
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dhcp6 = (struct dhcp6 *)mem_malloc(sizeof(struct dhcp6));
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if (dhcp6 == NULL) {
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LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("%s: could not allocate dhcp6\n", dbg_requester));
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return NULL;
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}
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/* clear data structure, this implies DHCP6_STATE_OFF */
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memset(dhcp6, 0, sizeof(struct dhcp6));
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/* store this dhcp6 client in the netif */
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netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, dhcp6);
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} else {
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/* already has DHCP6 client attached */
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("%s: using existing DHCPv6 client\n", dbg_requester));
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}
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if (!dhcp6->pcb_allocated) {
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if (dhcp6_inc_pcb_refcount() != ERR_OK) { /* ensure DHCP6 PCB is allocated */
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mem_free(dhcp6);
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netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP6, NULL);
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return NULL;
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}
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LWIP_DEBUGF(DHCP6_DEBUG | LWIP_DBG_TRACE, ("%s: allocated dhcp6", dbg_requester));
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dhcp6->pcb_allocated = 1;
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}
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return dhcp6;
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}
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static u32_t
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dhcp6_create_next_xid(struct netif *netif, struct dhcp6 dhcp6)
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{
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LWIP_UNUSED_ARG(netif);
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LWIP_UNUSED_ARG(dhcp6);
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}
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#if LWIP_IPV6_DHCP6_STATELESS
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static err_t
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dhcp_information_request(struct netif *netif, struct dhcp6 *dhcp6)
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{
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struct dhcp *dhcp = netif_dhcp_data(netif);
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err_t result = ERR_OK;
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u16_t msecs;
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u8_t i;
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover()\n"));
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ip4_addr_set_any(&dhcp->offered_ip_addr);
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dhcp_set_state(dhcp, DHCP_STATE_SELECTING);
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/* create and initialize the DHCP message header */
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result = dhcp_create_msg(netif, dhcp, DHCP_DISCOVER);
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if (result == ERR_OK) {
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover: making request\n"));
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dhcp_option(dhcp, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN);
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dhcp_option_short(dhcp, DHCP_MAX_MSG_LEN(netif));
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dhcp_option(dhcp, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options));
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for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) {
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dhcp_option_byte(dhcp, dhcp_discover_request_options[i]);
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}
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LWIP_HOOK_DHCP_APPEND_OPTIONS(netif, dhcp, DHCP_STATE_SELECTING, dhcp->msg_out, DHCP_DISCOVER);
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dhcp_option_trailer(dhcp);
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover: sendto(DISCOVER, IP_ADDR_BROADCAST, DHCP_SERVER_PORT)\n"));
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udp_sendto_if_src(dhcp_pcb, dhcp->p_out, IP_ADDR_BROADCAST, DHCP_SERVER_PORT, netif, IP4_ADDR_ANY);
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_discover: deleting()ing\n"));
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dhcp_delete_msg(dhcp);
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_discover: SELECTING\n"));
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} else {
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("dhcp_discover: could not allocate DHCP request\n"));
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}
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if (dhcp->tries < 255) {
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dhcp->tries++;
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}
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#if LWIP_DHCP_AUTOIP_COOP
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if (dhcp->tries >= LWIP_DHCP_AUTOIP_COOP_TRIES && dhcp->autoip_coop_state == DHCP_AUTOIP_COOP_STATE_OFF) {
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dhcp->autoip_coop_state = DHCP_AUTOIP_COOP_STATE_ON;
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autoip_start(netif);
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}
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#endif /* LWIP_DHCP_AUTOIP_COOP */
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msecs = (u16_t)((dhcp->tries < 6 ? 1 << dhcp->tries : 60) * 1000);
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dhcp->request_timeout = (u16_t)((msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS);
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LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_discover(): set request timeout %"U16_F" msecs\n", msecs));
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return result;
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}
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static err_t
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dhcp6_request_config(struct netif *netif)
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{
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struct dhcp6 *dhcp6;
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LWIP_ASSERT("netif != NULL", netif != NULL);
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dhcp6 = dhcp6_get_struct(netif, "dhcp6_request_config()");
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if (dhcp6 == NULL) {
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return ERR_MEM;
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}
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/* if state is not idle, set a flag to send an information-request later? */
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if (dhcp6->state != DHCP6_STATE_OFF) {
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dhcp6->request_config_pending = 1;
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return ERR_OK;
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}
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/* send Information-request and wait for answer; setup receive timeout */
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dhcp_information_request(netif, dhcp6);
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return ERR_OK;
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}
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#endif /* LWIP_IPV6_DHCP6_STATELESS */
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void
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dhcp6_nd6_ra_trigger(struct netif *netif, u8_t managed_addr_config, u8_t other_config)
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{
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LWIP_UNUSED_ARG(managed_addr_config);
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LWIP_UNUSED_ARG(other_config);
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#if LWIP_IPV6_DHCP6_STATELESS
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if (other_config) {
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dhcp6_request_config(netif);
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}
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#endif /* LWIP_IPV6_DHCP6_STATELESS */
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}
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static void
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dhcp6_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port)
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{
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LWIP_UNUSED_ARG(arg);
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LWIP_UNUSED_ARG(pcb);
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LWIP_UNUSED_ARG(p);
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LWIP_UNUSED_ARG(addr);
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LWIP_UNUSED_ARG(port);
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}
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#endif /* LWIP_IPV6 && LWIP_IPV6_DHCP6 */
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#endif /* LWIP_IPV6 && LWIP_IPV6_DHCP6 */
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