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neelimap
2026-07-30 11:19:44 +05:30
parent 170c2b3f3a
commit afc7070c1f
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components/ip_net2-6.9/ipmip6pm/config/ipmip6pm_service_dsmipv6.c
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/*
******************************************************************************
* INTERPEAK SOURCE FILE
*
* Document no: @(#) $Name: VXWORKS_ITER40_2019102207 $ $RCSfile: ipmip6pm_service_dsmipv6.c,v $ $Revision: 1.10 $
* $Source: /home/interpeak/CVSRoot/ipmip6pm/config/ipmip6pm_service_dsmipv6.c,v $
* $Author: jhorteli $
* $State: Exp $ $Locker: $
*
* INTERPEAK_COPYRIGHT_STRING
* Design and implementation by Joel Hortelius <joel.hortelis@interpeak.se>
******************************************************************************
*/
/*
****************************************************************************
* 1 DESCRIPTION
****************************************************************************
*/
/*
****************************************************************************
* 2 CONFIGURATION
****************************************************************************
*/
#include "ipmip6pm_config.h"
#ifdef IPMIP_USE_INET
/*
****************************************************************************
* 3 INCLUDE FILES
****************************************************************************
*/
#define IPCOM_USE_CLIB_PROTO
#include <ipcom_clib.h>
#include <ipcom_os.h>
#include <ipcom_sock.h>
#include <ipcom_sock6.h>
#include <ipcom_inet.h>
#include <ipcom_list.h>
#include <ipcom_hash.h>
#include <ipcom_err.h>
#include <ipcom_sysvar.h>
#include <ipcom_syslog.h>
#include <ipcom_shell.h>
#include <ipcom_route.h>
#include <ipnet.h>
#include <ipnet_policy_routing.h>
#include <ipmip.h>
#include <private/ipmip_util.h>
#include <private/ipmip_sysvar.h>
#include <private/ipmip_dhcp.h>
#include <private/ipmip_inet.h>
#include <ipmip6.h>
#include <private/ipmip6_context.h>
#include <private/ipmip6_netlink.h>
#include <private/ipmip6_if.h>
#include <private/ipmip6_icmp.h>
#include <private/ipmip6_util.h>
#include "ipmip6pm_h.h"
#include "ipmip6pm_attr_h.h"
#include "ipmip6pm_if.h"
#include "ipmip6pm_node.h"
#include "ipmip6pm_pktbuf.h"
/*
****************************************************************************
* 4 DEFINES
****************************************************************************
*/
#define IPMIP6PM_SERVICE_DSMIPV6_NAME "DSMIPV6"
#define IPMIP6PM_SERVICE_INSTALLED_DHCP (1 << 0)
#define IPMIP6PM_SERVICE_INSTALLED_ARP (1 << 1)
/*
****************************************************************************
* 5 TYPES
****************************************************************************
*/
typedef struct Ipmip6pm_service_dsmipv6_config_global
{
struct
{
Ip_bool enabled;
} server_config;
struct
{
Ip_bool enabled;
Ip_u32 forward;
Ip_bool override;
Ip_bool link_selection;
} relay_config;
} Ipmip6pm_service_dsmipv6_config_global_t;
typedef struct Ipmip6pm_service_dsmipv6_config
{
struct
{
Ip_bool enabled;
} server_config;
struct
{
Ip_bool enabled;
Ip_u32 forward;
Ip_bool override;
Ip_bool link_selection;
} relay_config;
} Ipmip6pm_service_dsmipv6_config_t;
typedef struct Ipmip6pm_service_dsmipv6_relay
{
Ip_u32 forward;
} Ipmip6pm_service_dsmipv6_relay_t;
typedef struct Ipmip6pm_service_dsmipv6_node
{
/* MUST be first */
Ipmip_dhcp_node_t dhcp;
Ipmip_arp_node_t arp;
Ip_u32 installed;
Ipmip6pm_service_dsmipv6_relay_t relay_data;
Ip_bool relay;
Ip_u32 gateway;
Ipmip6pm_service_dsmipv6_config_t *cfg;
} Ipmip6pm_service_dsmipv6_node_t;
/*
****************************************************************************
* 6 EXTERN PROTOTYPES
****************************************************************************
*/
/*
****************************************************************************
* 7 LOCAL PROTOTYPES
****************************************************************************
*/
/*
****************************************************************************
* 8 DATA
****************************************************************************
*/
/*
****************************************************************************
* 9 STATIC FUNCTIONS
****************************************************************************
*/
IP_STATIC int
ipmip6pm_service_dsmipv6_arp(int event,
Ipmip6pm_context_t *ctx,
Ipmip_proc_t *proc,
Ipmip_arp_node_t *arp,
Ipmip6pm_pktbuf_t *pbuf)
{
if (event == IPMIP_TIMER_EVENT_RUN)
{
Ipmip_arp_hdr_t *pkt = (Ipmip_arp_hdr_t *)IPMIP_BUFFER_PTR(&pbuf->ipmip6.ipmip.packet);
Ipmip6pm_node_t *node = arp->opaque;
if (pkt->op == IPMIP_ARP_OP_REQUEST)
{
/* Don't reply to the node's own */
if (IP_GET_32ON8(&pkt->ip_dst[0]) != node->mo_dsmipv6_home_prefix.prefix)
{
IPMIP6_EVENT_IF(DEBUG2, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"ARP Request Received by %s",
ipmip6pm_node_describe(proc, node)));
ipmip_inet_arp_reply(&ctx->ipmip6.ipmip, proc, pkt, &node->ifp_private.ipmip6.ifp->iff);
}
}
}
/* Free the DHCP packet */
ipmip_pktbuf_release(&ctx->ipmip6.ipmip, proc, &pbuf->ipmip6.ipmip);
return IPMIP_TIMER_RET_DONE;
}
IP_STATIC int
ipmip6pm_service_dsmipv6_dhcpv4_relay(int event,
Ipmip6pm_context_t *ctx,
Ipmip_proc_t *proc,
Ipmip6pm_service_dsmipv6_node_t *dnode,
Ipmip6pm_pktbuf_t *pbuf)
{
if (event == IPMIP_TIMER_EVENT_RUN)
{
Ipmip6pm_node_t *node = dnode->dhcp.opaque;
int ra_opt;
Ipmip_dhcp_hdr_t *pkt = (Ipmip_dhcp_hdr_t *)IPMIP_BUFFER_PTR(&pbuf->ipmip6.ipmip.packet);
Ip_u8 *opt;
opt = ipmip_dhcp_option_buffer_find(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_OPTCODE_DHCP_MESSAGE_TYPE);
if (pkt->op == IPMIP_DHCP_OP_BOOTREQUEST)
{
if (opt == IP_NULL)
{
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Request Received by %s contained no MESSAGE_TYPE",
ipmip6pm_node_describe(proc, node)));
goto done_out;
}
if (opt[IPMIP_DHCP_OPT_DATA] == IPMIP_DHCP_MSG_REQUEST)
{
Ip_u32 ciaddr = IP_GET_32ON8(&pkt->ciaddr);
if (ciaddr == 0)
ciaddr = ipmip_dhcp_option_buffer_find_ip(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_OPTCODE_DHCP_REQUESTED_ADDRESS);
if (ciaddr != node->mo_dsmipv6_home_prefix.prefix)
{
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP REQUEST Received for %s CIADDR mismatch %s != %s",
ipmip6pm_node_describe(proc, node),
ipmip_ntop_inet(proc, ciaddr),
ipmip_ntop_inet(proc, node->mo_dsmipv6_home_prefix.prefix)));
goto done_out;
}
}
IPMIP6_EVENT_IF(DEBUG, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Request Received by %s relaying to %s",
ipmip6pm_node_describe(proc, node),
ipmip_ntop_inet(proc, dnode->relay_data.forward)));
/* */
IP_SET_32ON8(&pkt->giaddr, node->ifp_public->ifinet);
pkt->hops++;
/**/
ipmip_dhcp_option_buffer_open(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_OPTCODE_END);
/**/
ra_opt = ipmip_dhcp_option_buffer_init(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_OPTCODE_RELAY_AGENT_INFO);
if (dnode->cfg->relay_config.link_selection)
ipmip_dhcp_option_buffer_append(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_SUBOPTCODE_RA_LINK_SELECTION, sizeof(Ip_u32), &node->mo_dsmipv6_home_prefix.prefix);
if (dnode->cfg->relay_config.override)
ipmip_dhcp_option_buffer_append(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_SUBOPTCODE_RA_SERVER_OVERRIDE, sizeof(Ip_u32), &dnode->gateway);
ipmip_dhcp_option_buffer_append(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_SUBOPTCODE_RA_REMOTE_ID, sizeof(Ip_u32), &node->mo_dsmipv6_home_prefix.prefix);
ipmip_dhcp_option_buffer_append(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_SUBOPTCODE_RA_CIRCUIT_ID, sizeof(Ip_u32), &dnode->dhcp.ifindex);
ipmip_dhcp_option_buffer_end(&pbuf->ipmip6.ipmip.packet, ra_opt);
ipmip_dhcp_option_buffer_close(&pbuf->ipmip6.ipmip.packet);
/* */
ipmip_dhcp_relay_to_server(&ctx->ipmip6.ipmip, proc, &pbuf->ipmip6.ipmip, node->ifp_public->ifinet, dnode->relay_data.forward);
}
else
{
Ipmip6pm_if_priv_t *ifp = (Ipmip6pm_if_priv_t *)node->ifp_private.ipmip6.ifp;
if (opt == IP_NULL)
{
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Reply Received for %s contained no MESSAGE_TYPE",
ipmip6pm_node_describe(proc, node)));
goto done_out;
}
/**/
if (opt[IPMIP_DHCP_OPT_DATA] == IPMIP_DHCP_MSG_OFFER)
{
if (IP_GET_32ON8(&pkt->yiaddr) != node->mo_dsmipv6_home_prefix.prefix)
{
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP OFFER Received for %s YIADDR mismatch %s != %s",
ipmip6pm_node_describe(proc, node),
ipmip_ntop_inet(proc, IP_GET_32ON8(&pkt->yiaddr)),
ipmip_ntop_inet(proc,node->mo_dsmipv6_home_prefix.prefix)));
goto done_out;
}
}
IPMIP6_EVENT_IF(DEBUG, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Reply Received for %s",
ipmip6pm_node_describe(proc, node)));
ipmip_dhcp_write_to_client(&ctx->ipmip6.ipmip, proc, &pbuf->ipmip6.ipmip, dnode->gateway, &ifp->ipmip6.iff, IP_FALSE);
}
}
/* Free the DHCP packet */
done_out:
ipmip_pktbuf_release(&ctx->ipmip6.ipmip, proc, &pbuf->ipmip6.ipmip);
return IPMIP_TIMER_RET_DONE;
}
IP_STATIC int
ipmip6pm_service_dsmipv6_dhcpv4_server(int event,
Ipmip6pm_context_t *ctx,
Ipmip_proc_t *proc,
Ipmip6pm_service_dsmipv6_node_t *dnode,
Ipmip6pm_pktbuf_t *pbuf)
{
if (event == IPMIP_TIMER_EVENT_RUN)
{
Ipmip6pm_node_t *node = dnode->dhcp.opaque;
Ipmip_dhcp_hdr_t *pkt = (Ipmip_dhcp_hdr_t *)IPMIP_BUFFER_PTR(&pbuf->ipmip6.ipmip.packet);
if (pkt->op == IPMIP_DHCP_OP_BOOTREQUEST)
{
Ip_u8 *opt;
/**/
if (IP_GET_32ON8(&pkt->giaddr) == 0 && ipmip_dhcp_option_buffer_find(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_OPTCODE_RELAY_AGENT_INFO) == IP_NULL)
{
if ((opt = ipmip_dhcp_option_buffer_find(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_OPTCODE_DHCP_MESSAGE_TYPE)) == IP_NULL)
{
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"No MESSAGE TYPE in DHCP Request Received by %s",
ipmip6pm_node_describe(proc, node)));
goto done_out;
}
else
{
Ipmip6pm_pktbuf_t *rpkt = (Ipmip6pm_pktbuf_t*)ipmip_pktbuf_alloc(&ctx->ipmip6.ipmip, proc, 512);
Ipmip_buffer_t *buf = &rpkt->ipmip6.ipmip.packet;
Ip_u8 type;
#if 0
Ip_u8 *req_opt = ipmip_dhcp_option_buffer_find(&pbuf->ipmip6.ipmip.packet, IPMIP_DHCP_OPTCODE_DHCP_PARAMETER_REQUEST_LIST);
#endif
Ip_u32 tmp32;
/* Add the packet */
ipmip_buffer_append(buf, pkt, sizeof(*pkt));
switch(opt[IPMIP_DHCP_OPT_DATA])
{
case IPMIP_DHCP_MSG_DISCOVER:
IPMIP6_EVENT_IF(DEBUG, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Discover Received by %s",
ipmip6pm_node_describe(proc, node)));
type = IPMIP_DHCP_MSG_OFFER;
break;
case IPMIP_DHCP_MSG_REQUEST:
{
Ip_u32 sid = 0;
Ip_u32 req_addr = 0;
IPMIP6_EVENT_IF(DEBUG, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Request Received by %s",
ipmip6pm_node_describe(proc, node)));
sid = ipmip_dhcp_option_buffer_find_ip(&pbuf->ipmip6.ipmip.packet,
IPMIP_DHCP_OPTCODE_DHCP_SERVER_IDENTIFIER);
req_addr = ipmip_dhcp_option_buffer_find_ip(&pbuf->ipmip6.ipmip.packet,
IPMIP_DHCP_OPTCODE_DHCP_REQUESTED_ADDRESS);
if (req_addr == 0)
req_addr = IP_GET_32ON8(&pkt->ciaddr);
if (sid != 0 && sid != dnode->gateway)
goto done_out;
if (req_addr != 0 && req_addr == node->mo_dsmipv6_home_prefix.prefix)
type = IPMIP_DHCP_MSG_ACK;
else
type = IPMIP_DHCP_MSG_NAK;
}
break;
case IPMIP_DHCP_MSG_DECLINE:
/* Do what? */
IPMIP6_EVENT_IF(DEBUG, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Decline Received by %s",
ipmip6pm_node_describe(proc, node)));
goto done_out;
case IPMIP_DHCP_MSG_RELEASE:
/* Do what? */
IPMIP6_EVENT_IF(DEBUG, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Release Received by %s",
ipmip6pm_node_describe(proc, node)));
goto done_out;
case IPMIP_DHCP_MSG_INFORM:
/* Do what? */
IPMIP6_EVENT_IF(DEBUG, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Inform Received by %s",
ipmip6pm_node_describe(proc, node)));
if (IP_GET_32ON8(&pkt->ciaddr) == node->mo_dsmipv6_home_prefix.prefix)
type = IPMIP_DHCP_MSG_INFORM_ACK;
else
type = IPMIP_DHCP_MSG_NAK;
break;
default:
IPMIP6_EVENT_IF(WARNING, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP unknown Received by %s",
ipmip6pm_node_describe(proc, node)));
goto done_out;
}
/* Add TYPE */
ipmip_dhcp_option_buffer_append_u8(buf, IPMIP_DHCP_OPTCODE_DHCP_MESSAGE_TYPE, type);
ipmip_dhcp_option_buffer_append_ip(buf, IPMIP_DHCP_OPTCODE_DHCP_SERVER_IDENTIFIER, dnode->gateway);
if (type != IPMIP_DHCP_MSG_NAK)
{
/* ACK or INFORM_ACK */
if (type != IPMIP_DHCP_MSG_INFORM_ACK)
{
#ifndef IPTESTENGINE
ipmip_dhcp_option_buffer_append_u32(buf, IPMIP_DHCP_OPTCODE_DHCP_LEASE_TIME, node->remaining);
#else
ipmip_dhcp_option_buffer_append_u32(buf, IPMIP_DHCP_OPTCODE_DHCP_LEASE_TIME, 5);
#endif
}
/* Add the basic options */
/* Subnet */
tmp32 = 0;
ipmip_util_create_mask((Ip_u8 *)&tmp32, node->mo_dsmipv6_home_prefix.len);
ipmip_dhcp_option_buffer_append_ip(buf, IPMIP_DHCP_OPTCODE_SUBNET_MASK, tmp32);
/* Gateway */
ipmip_dhcp_option_buffer_append_ip(buf, IPMIP_DHCP_OPTCODE_ROUTERS, dnode->gateway);
}
else
{
/* NAK */
}
ipmip_dhcp_option_buffer_close(buf);
pkt = (Ipmip_dhcp_hdr_t *)IPMIP_BUFFER_PTR(buf);
pkt->op = IPMIP_DHCP_OP_BOOTREPLY;
pkt->hops = 0;
if (type != IPMIP_DHCP_MSG_NAK && type != IPMIP_DHCP_MSG_INFORM_ACK)
IP_SET_32ON8(&pkt->yiaddr, node->mo_dsmipv6_home_prefix.prefix);
/* Send */
ipmip_dhcp_write_to_client(&ctx->ipmip6.ipmip, proc, &rpkt->ipmip6.ipmip, dnode->gateway, &node->ifp_private.ipmip6.ifp->iff, type == IPMIP_DHCP_MSG_NAK);
}
}
else
{
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"Relayed DHCP Request Received by %s",
ipmip6pm_node_describe(proc, node)));
}
}
else
{
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"DHCP Reply Received for %s",
ipmip6pm_node_describe(proc, node)));
}
}
done_out:
/* Free the DHCP packet */
ipmip_pktbuf_release(&ctx->ipmip6.ipmip, proc, &pbuf->ipmip6.ipmip);
return IPMIP_TIMER_RET_DONE;
}
IP_STATIC Ip_bool
ipmip6pm_service_dsmipv6_req_accept(struct Ipmip6pm_context *ctx,
struct Ipmip_proc *proc,
Ipmip6pm_service_dsmipv6_config_global_t *gcfg,
Ipmip6pm_service_dsmipv6_config_t *cfg,
Ipmip6pm_service_dsmipv6_node_t *handle,
struct Ipmip6pm_node *node,
struct Ipmip6pm_pktbuf *pbuf,
struct Ipmip_timer *service)
{
IPMIP_UNUSED_PARAMETER(ctx);
IPMIP_UNUSED_PARAMETER(proc);
IPMIP_UNUSED_PARAMETER(cfg);
IPMIP_UNUSED_PARAMETER(gcfg);
IPMIP_UNUSED_PARAMETER(node);
IPMIP_UNUSED_PARAMETER(service);
if (pbuf->ipmip6.mo.pdsmipv6_default_router != IP_NULL)
handle->gateway = IP_GET_32ON8(&pbuf->ipmip6.mo.pdsmipv6_default_router->gw);
return IP_FALSE;
}
IP_STATIC void
ipmip6pm_service_dsmipv6_config_global(struct Ipmip6pm_context *ctx,
struct Ipmip_proc *proc,
int action,
Ipmip6pm_service_dsmipv6_config_global_t *gcfg,
Ipmip_cli_message_t *request)
{
IPMIP_UNUSED_PARAMETER(ctx);
IPMIP_UNUSED_PARAMETER(proc);
if (action == IPMIP_CALLBACK_CONFIG_READ)
{
gcfg->relay_config.enabled = ipmip_sysvar_bool(IP_TRUE, "ipmip6pm.inet.dhcp.relay.enabled");
gcfg->relay_config.link_selection = ipmip_sysvar_bool(IP_FALSE, "ipmip6pm.inet.dhcp.relay.link_selection");
gcfg->relay_config.override = ipmip_sysvar_bool(IP_TRUE, "ipmip6pm.inet.dhcp.relay.server_override");
ipmip_sysvar_inet(0, &gcfg->relay_config.forward, IP_NULL, "ipmip6pm.inet.dhcp.relay.server");
gcfg->server_config.enabled = ipmip_sysvar_bool(IP_TRUE, "ipmip6pm.inet.dhcp.server.enabled");
}
else if (action == IPMIP_CALLBACK_CONFIG_FREE)
{
/* Do nothing */
}
else if (action == IPMIP_CALLBACK_CONFIG_DUMP)
{
ipmip_cli_config_printf(&request->message,
"ipmip6pm.inet.dhcp.server.enabled=%s",
gcfg->server_config.enabled? "enabled" : "disabled");
ipmip_cli_config_printf(&request->message,
"ipmip6pm.inet.dhcp.relay.enabled=%s",
gcfg->relay_config.enabled? "enabled" : "disabled");
ipmip_cli_config_printf(&request->message,
"ipmip6pm.inet.dhcp.relay.link_selection=%s",
gcfg->relay_config.link_selection? "true" : "false");
ipmip_cli_config_printf(&request->message,
"ipmip6pm.inet.dhcp.relay.server_override=%s",
gcfg->relay_config.override? "true" : "false");
if (gcfg->relay_config.forward)
{
ipmip_cli_config_printf(&request->message,
"ipmip6pm.inet.dhcp.relay.server=%s",
ipmip_ntop_inet(proc, gcfg->relay_config.forward));
}
}
}
IP_STATIC void
ipmip6pm_service_dsmipv6_config(struct Ipmip6pm_context *ctx,
struct Ipmip_proc *proc,
int action,
struct Ipmip6pm_if *ifp,
Ipmip6pm_service_dsmipv6_config_global_t *gcfg,
Ipmip6pm_service_dsmipv6_config_t *cfg,
Ipmip_cli_message_t *request)
{
IPMIP_UNUSED_PARAMETER(ctx);
IPMIP_UNUSED_PARAMETER(proc);
if (action == IPMIP_CALLBACK_CONFIG_READ)
{
cfg->relay_config.enabled = ipmip_sysvar_bool(gcfg->relay_config.enabled, "ipmip6pm.interface.%s.inet.dhcp.relay.enabled", ifp->ipmip6.iff.ifname);
ipmip_sysvar_inet(gcfg->relay_config.forward, &cfg->relay_config.forward, IP_NULL, "ipmip6pm.interface.%s.inet.dhcp.relay.server", ifp->ipmip6.iff.ifname);
cfg->relay_config.link_selection = ipmip_sysvar_bool(gcfg->relay_config.link_selection, "ipmip6pm.interface.%s.inet.dhcp.relay.link_selection", ifp->ipmip6.iff.ifname);
cfg->relay_config.override = ipmip_sysvar_bool(gcfg->relay_config.override, "ipmip6pm.interface.%s.inet.dhcp.relay.server_override", ifp->ipmip6.iff.ifname);
cfg->server_config.enabled = ipmip_sysvar_mode(gcfg->server_config.enabled, "ipmip6pm.interface.%s.inet.dhcp.server.enabled", ifp->ipmip6.iff.ifname);
if (cfg->relay_config.enabled || cfg->server_config.enabled)
{
/* We need the DHCP context */
ipmip_dhcp_context_create(&ctx->ipmip6.ipmip, proc);
}
}
else if (action == IPMIP_CALLBACK_CONFIG_FREE)
{
/* Do nothing */
}
else if (action == IPMIP_CALLBACK_CONFIG_DUMP)
{
ipmip_cli_config_printf(&request->message,
"ipmip6pm.interface.%s.inet.dhcp.server.enabled=%s",
ifp->ipmip6.iff.ifname, cfg->server_config.enabled? "enabled" : "disabled");
ipmip_cli_config_printf(&request->message,
"ipmip6pm.interface.%s.inet.dhcp.relay.enabled=%s",
ifp->ipmip6.iff.ifname, cfg->relay_config.enabled? "enabled" : "disabled");
ipmip_cli_config_printf(&request->message,
"ipmip6pm.interface.%s.inet.dhcp.relay.link_selection=%s",
ifp->ipmip6.iff.ifname, cfg->relay_config.link_selection? "true" : "false");
ipmip_cli_config_printf(&request->message,
"ipmip6pm.interface.%s.inet.dhcp.relay.server_override=%s",
ifp->ipmip6.iff.ifname, cfg->relay_config.override? "true" : "false");
if (cfg->relay_config.forward)
{
ipmip_cli_config_printf(&request->message,
"ipmip6pm.interface.%s.inet.dhcp.relay.server=%s",
ifp->ipmip6.iff.ifname, ipmip_ntop_inet(proc, cfg->relay_config.forward));
}
}
}
IP_STATIC int
ipmip6pm_service_dsmipv6_provide(struct Ipmip6pm_context *ctx,
struct Ipmip_proc *proc,
int action,
Ipmip6pm_service_dsmipv6_config_global_t *gcfg,
Ipmip6pm_service_dsmipv6_config_t *cfg,
Ipmip6pm_service_dsmipv6_node_t *handle,
struct Ipmip6pm_node *node,
struct Ipmip_timer *service)
{
IPMIP_UNUSED_PARAMETER(service);
IPMIP_UNUSED_PARAMETER(cfg);
IPMIP_UNUSED_PARAMETER(gcfg);
if (action == IPMIP_CALLBACK_ENABLE)
{
/* Assign the gateway */
if (node->mo_dsmipv6_home_prefix.prefix != 0)
{
if (handle->gateway && !handle->relay)
{
if (ipmip_netlink_inX_addr(&ctx->ipmip6.ipmip,
proc,
IP_AF_INET,
IP_RTM_NEWADDR,
node->ifp_private.ipmip6.ifp->iff.ifindex,
&handle->gateway,
32,
0,
0) != 0)
{
/**/
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"Proxy Mobile node %s interface %s unable to add DSMIPv6 Gateway address %s",
ipmip6pm_node_describe(proc, node),
node->ifp_private.ipmip6.ifp->iff.ifname,
ipmip_ntop_inet(proc, handle->gateway)));
}
}
/* Setup the RELAY structure */
handle->dhcp.ifindex = node->ifp_private.ipmip6.ifp->iff.ifindex;
handle->dhcp.lock = node->lock;
handle->dhcp.opaque = node;
handle->cfg = cfg;
if (handle->relay)
{
if (node->ifp_public && node->ifp_public->ifinet)
{
/*
* The relay agent won't work properly unless there is
* an IPv4 address configured on the interface.
* We can use the CoA for this purpose.
*/
if (ipmip_netlink_inX_addr(&ctx->ipmip6.ipmip,
proc,
IP_AF_INET,
IP_RTM_NEWADDR,
node->ifp_private.ipmip6.ifp->iff.ifindex,
&node->ifp_public->ifinet,
32,
0,
0) != 0)
{
/**/
IPMIP6_EVENT_IF(ERR, proc,
ipmip_log_event_add(&ctx->ipmip6.ipmip,
proc,
"Proxy Mobile node %s interface %s unable to add DSMIPv6 CoA address %s",
ipmip6pm_node_describe(proc, node),
node->ifp_private.ipmip6.ifp->iff.ifname,
ipmip_ntop_inet(proc, node->ifp_public->ifinet)));
}
}
handle->dhcp.remote_id = node->mo_dsmipv6_home_prefix.prefix;
handle->dhcp.process_func = (Ipmip_timer_func_t)ipmip6pm_service_dsmipv6_dhcpv4_relay;
ipmip_dhcp_register(&ctx->ipmip6.ipmip, proc, &handle->dhcp);
}
else
{
handle->dhcp.process_func = (Ipmip_timer_func_t)ipmip6pm_service_dsmipv6_dhcpv4_server;
ipmip_dhcp_register(&ctx->ipmip6.ipmip, proc, &handle->dhcp);
}
handle->installed |= IPMIP6PM_SERVICE_INSTALLED_DHCP;
if (node->ifp_private.ipmip6.ifp->iff.lladdr != IP_NULL && node->ifp_private.ipmip6.ifp->iff.lladdr->type == IPMIP_LLADDR_TYPE_MAC)
{
handle->arp.ifindex = node->ifp_private.ipmip6.ifp->iff.ifindex;
handle->arp.lock = node->lock;
handle->arp.opaque = node;
handle->arp.process_func = (Ipmip_timer_func_t)ipmip6pm_service_dsmipv6_arp;
ipmip_inet_arp_context_in_create(&ctx->ipmip6.ipmip, proc);
ipmip_inet_arp_context_out_create(&ctx->ipmip6.ipmip, proc);
ipmip_inet_arp_register(&ctx->ipmip6.ipmip, proc, &handle->arp);
handle->installed |= IPMIP6PM_SERVICE_INSTALLED_ARP;
}
}
}
else if (action == IPMIP_CALLBACK_DISABLE || action == IPMIP_CALLBACK_UPDATE)
{
if (handle->relay
&& node->ifp_public
&& node->ifp_public->ifinet)
{
ipmip_netlink_inX_addr(&ctx->ipmip6.ipmip,
proc,
IP_AF_INET,
IP_RTM_DELADDR,
node->ifp_private.ipmip6.ifp->iff.ifindex,
&node->ifp_public->ifinet,
32,
0,
0);
}
else if (handle->gateway)
{
ipmip_netlink_inX_addr(&ctx->ipmip6.ipmip,
proc,
IP_AF_INET,
IP_RTM_DELADDR,
node->ifp_private.ipmip6.ifp->iff.ifindex,
&handle->gateway,
32,
0,
0);
}
if ((handle->installed & IPMIP6PM_SERVICE_INSTALLED_DHCP) != 0)
{
ipmip_dhcp_unregister(&ctx->ipmip6.ipmip, proc, &handle->dhcp);
/**/
handle->installed &= ~IPMIP6PM_SERVICE_INSTALLED_DHCP;
}
if ((handle->installed & IPMIP6PM_SERVICE_INSTALLED_ARP) != 0)
{
ipmip_inet_arp_unregister(&ctx->ipmip6.ipmip, proc, &handle->arp);
/**/
handle->installed &= ~IPMIP6PM_SERVICE_INSTALLED_ARP;
}
if (action == IPMIP_CALLBACK_UPDATE)
return IPMIP_CALLBACK_RET_FAILED;
}
/* Don't delay */
return IPMIP_CALLBACK_RET_SUCCESS;
}
IP_STATIC Ip_bool
ipmip6pm_service_dsmipv6_setup(struct Ipmip6pm_context *ctx,
struct Ipmip_proc *proc,
int action,
Ipmip6pm_service_dsmipv6_config_global_t *gcfg,
Ipmip6pm_service_dsmipv6_config_t *cfg,
Ipmip6pm_service_dsmipv6_node_t *handle,
struct Ipmip6pm_node *node,
const char *value,
Ipmip_cli_message_t *request)
{
IPMIP_UNUSED_PARAMETER(ctx);
IPMIP_UNUSED_PARAMETER(proc);
IPMIP_UNUSED_PARAMETER(gcfg);
if (action == IPMIP_CALLBACK_CONFIG_READ)
{
int slen = value? ipcom_strlen(value) : 0;
if (ctx->ipmip6.ipmip.dhcp == IP_NULL)
return IP_FALSE;
if (slen == 0 || value[0] != 'S')
{
if (cfg->relay_config.enabled == IP_FALSE)
return IP_FALSE;
/* RELAY */
if (slen > 2 && value[1] == '=')
{
ipmip_util_inet(&value[2], &handle->relay_data.forward, IP_NULL);
}
else
{
if (cfg->relay_config.forward)
handle->relay_data.forward = cfg->relay_config.forward;
else
handle->relay_data.forward = node->homeagent_inet;
}
handle->relay = IP_TRUE;
return IP_TRUE;
}
else
{
/* SERVER */
return cfg->server_config.enabled;
}
}
else if (action == IPMIP_CALLBACK_CONFIG_FREE)
{
/* No dyncamically allocated values */
}
else if (action == IPMIP_CALLBACK_CONFIG_DUMP)
{
if (handle->relay)
{
Ip_size_t rta = ipmip_attr_begin(&request->message, IPMIP6PM_CLI_ATTR_BC_P_SERVICE);
ipmip_attr_put_str(&request->message,
IPMIP6PM_CLI_ATTR_BC_P_SRV_MODULE,
IPMIP6PM_SERVICE_DSMIPV6_NAME);
ipcom_snprintf(proc->ntop.ntop_pbuf, sizeof(proc->ntop.ntop_pbuf), "R=%s", ipmip_ntop_inet(proc, handle->relay_data.forward));
ipmip_attr_put_str(&request->message,
IPMIP6PM_CLI_ATTR_BC_P_SRV_VALUE,
proc->ntop.ntop_pbuf);
ipmip_attr_end(&request->message, rta);
}
else
{
Ip_size_t rta = ipmip_attr_begin(&request->message, IPMIP6PM_CLI_ATTR_BC_P_SERVICE);
ipmip_attr_put_str(&request->message,
IPMIP6PM_CLI_ATTR_BC_P_SRV_MODULE,
IPMIP6PM_SERVICE_DSMIPV6_NAME);
ipmip_attr_put_str(&request->message,
IPMIP6PM_CLI_ATTR_BC_P_SRV_VALUE,
"S");
ipmip_attr_end(&request->message, rta);
}
}
return IP_FALSE;
}
/*
****************************************************************************
* 10 GLOBAL FUNCTIONS
****************************************************************************
*/
IP_GLOBAL void ipmip6pm_service_dsmipv6_install(struct Ipmip6pm_context *ctx);
IP_GLOBAL void
ipmip6pm_service_dsmipv6_install(struct Ipmip6pm_context *ctx)
{
static Ipmip6pm_extension_t srv;
srv.name = IPMIP6PM_SERVICE_DSMIPV6_NAME;
srv.syntax = "<R[=dhcpv4 server address]|S>";
srv.node_data_size = sizeof(Ipmip6pm_service_dsmipv6_node_t);
srv.ifp_data_size = sizeof(Ipmip6pm_service_dsmipv6_config_t);
srv.global_data_size = sizeof(Ipmip6pm_service_dsmipv6_config_global_t);
srv.config_global = (Ipmip6pm_extension_config_global_t)ipmip6pm_service_dsmipv6_config_global;
srv.config_ifp = (Ipmip6pm_extension_config_ifp_t)ipmip6pm_service_dsmipv6_config;
srv.provide = (Ipmip6pm_extension_provide_t)ipmip6pm_service_dsmipv6_provide;
srv.setup = (Ipmip6pm_extension_setup_t)ipmip6pm_service_dsmipv6_setup;
srv.pkt_rep_accept = (Ipmip6pm_extension_pkt_rep_accept_t)ipmip6pm_service_dsmipv6_req_accept;
ipmip6pm_context_register_extension(ctx, &srv, IPMIP6PM_FUNCTION_SERVICE);
}
/*
****************************************************************************
* 11 PUBLIC FUNCTIONS
****************************************************************************
*/
#else
IP_GLOBAL void ipmip6pm_service_dsmipv6_install(struct Ipmip6pm_context *ctx);
IP_GLOBAL void
ipmip6pm_service_dsmipv6_install(struct Ipmip6pm_context *ctx)
{
IPMIP_UNUSED_PARAMETER(ctx);
}
#endif
/*
****************************************************************************
* END OF FILE
****************************************************************************
*/