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/*
*
* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
* Licensed 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.
*/
#include <stdlib.h>
#include <arpa/inet.h>
#include "nstack_rd_data.h"
#include "nstack_rd.h"
#include "nstack_rd_init.h"
#include "nstack_rd_priv.h"
#include "nstack_rd_ip.h"
#include "nstack_log.h"
#include "nstack_securec.h"
#include "nstack_ip_addr.h"
#define NSTACK_IP_MLSTACKID RD_LWIP
#define PP_HTONL(x) ((((x) & 0xff) << 24) | \
(((x) & 0xff00) << 8) | \
(((x) & 0xff0000UL) >> 8) | \
(((x) & 0xff000000UL) >> 24))
#define rd_ismulticast(addr)(((unsigned int)(addr) & 0xf0000000UL) == 0xe0000000UL)
int g_multi_stackid = -1;
/*copy rd data*/
int
nstack_rd_ipdata_cpy (void *destdata, void *srcdata)
{
rd_data_item *pitem = (rd_data_item *) destdata;
rd_route_data *pdata = (rd_route_data *) srcdata;
pitem->type = pdata->type;
pitem->ipdata.addr = pdata->ipdata.addr;
pitem->ipdata.masklen = pdata->ipdata.masklen;
pitem->ipdata.resev[0] = pdata->ipdata.resev[0];
pitem->ipdata.resev[1] = pdata->ipdata.resev[1];
return NSTACK_RD_SUCCESS;
}
/*
* Add an ip segment to the list and sort it in descending order of ip mask length
* If the list already exists in the same list of ip side, then stack_id update
*ip is local byteorder
*/
int
nstack_rd_ip_item_insert (nstack_rd_list * hlist, void *rditem)
{
nstack_rd_node *pdatanode = NULL;
nstack_rd_node *tempdata = NULL;
struct hlist_node *tempnode = NULL;
struct hlist_node *tem = NULL;
unsigned int tempip_addr = 0;
unsigned int tempip_masklen = 0;
rd_data_item *pitem = (rd_data_item *) rditem;
unsigned int ip_addr = pitem->ipdata.addr;
unsigned int ip_masklen = pitem->ipdata.masklen;
unsigned int ip_maskv = MASK_V (ip_addr, ip_masklen);
ip_masklen = pitem->ipdata.masklen;
NSSOC_LOGDBG ("stackid:%d, ipaddr:%u.%u.%u.%u masklen:0x%x was inserted",
pitem->stack_id, ip4_addr4_16 (&pitem->ipdata.addr),
ip4_addr3_16 (&pitem->ipdata.addr),
ip4_addr2_16 (&pitem->ipdata.addr),
ip4_addr1_16 (&pitem->ipdata.addr), pitem->ipdata.masklen);
pdatanode = (nstack_rd_node *) malloc (sizeof (nstack_rd_node));
if (!pdatanode)
{
NSSOC_LOGERR ("nstack rd item malloc fail");
return NSTACK_RD_FAIL;
}
int retVal =
MEMSET_S (pdatanode, sizeof (nstack_rd_node), 0, sizeof (nstack_rd_node));
if (EOK != retVal)
{
NSSOC_LOGERR ("MEMSET_S failed]retVal=%d", retVal);
free (pdatanode);
return NSTACK_RD_FAIL;
}
INIT_HLIST_NODE (&pdatanode->rdnode);
NSTACK_RD_IP_ITEM_COPY (&(pdatanode->item), pitem);
if (hlist_empty (&(hlist->headlist)))
{
hlist_add_head (&(pdatanode->rdnode), &(hlist->headlist));
return NSTACK_RD_SUCCESS;
}
hlist_for_each_entry (tempdata, tempnode, &(hlist->headlist), rdnode)
{
tem = tempnode;
tempip_addr = tempdata->item.ipdata.addr;
tempip_masklen = tempdata->item.ipdata.masklen;
if (ip_masklen < tempip_masklen)
{
continue;
}
/*if already exist, just return success */
if (ip_maskv == MASK_V (tempip_addr, tempip_masklen))
{
NSSOC_LOGDBG
("insert ip:%u.%u.%u.%u, mask:0x%x, stack_id:%d, exist orgid:%d",
ip4_addr4_16 (&pitem->ipdata.addr),
ip4_addr3_16 (&pitem->ipdata.addr),
ip4_addr2_16 (&pitem->ipdata.addr),
ip4_addr1_16 (&pitem->ipdata.addr), pitem->ipdata.masklen,
pitem->stack_id, tempdata->item.stack_id);
tempdata->item.stack_id = pitem->stack_id;
tempdata->item.agetime = NSTACK_RD_AGETIME_MAX;
free (pdatanode);
return NSTACK_RD_SUCCESS;
}
hlist_add_before (&(pdatanode->rdnode), tempnode);
return NSTACK_RD_SUCCESS;
}
hlist_add_after (tem, &(pdatanode->rdnode));
return NSTACK_RD_SUCCESS;
}
/*
*find stackid by ip
*input ip must netorder
*/
int
nstack_rd_ip_item_find (nstack_rd_list * hlist, void *rdkey, void *outitem)
{
struct hlist_node *tempnode = NULL;
nstack_rd_node *tempdata = NULL;
unsigned int tempip_addr = 0;
unsigned int tempip_masklen = 0;
nstack_rd_key *key = (nstack_rd_key *) rdkey;
rd_data_item *pitem = (rd_data_item *) outitem;
unsigned int ip_addr = 0;
/*need to convert to local order */
ip_addr = ntohl (key->ip_addr);
hlist_for_each_entry (tempdata, tempnode, &(hlist->headlist), rdnode)
{
tempip_addr = tempdata->item.ipdata.addr;
tempip_masklen = tempdata->item.ipdata.masklen;
/*if already exist, just return success */
if (MASK_V (ip_addr, tempip_masklen) ==
MASK_V (tempip_addr, tempip_masklen))
{
NSTACK_RD_IP_ITEM_COPY (pitem, &(tempdata->item));
return NSTACK_RD_SUCCESS;
}
}
NSSOC_LOGDBG ("ip=%u.%u.%u.%u item not found", ip4_addr4_16 (&ip_addr),
ip4_addr3_16 (&ip_addr),
ip4_addr2_16 (&ip_addr), ip4_addr1_16 (&ip_addr));
return NSTACK_RD_FAIL;
}
/*****************************************************************************
* Prototype : nstack_rd_ip_item_age
* Description : delete the ip item that have not been add again for one time
* Input : nstack_rd_list *hlist
* Output : None
* Return Value : int
* Calls :
* Called By :
*****************************************************************************/
int
nstack_rd_ip_item_age (nstack_rd_list * hlist)
{
struct hlist_node *tempnode = NULL;
nstack_rd_node *tempdata = NULL;
nstack_rd_node *prevdata = NULL;
struct hlist_node *prevnode = NULL;
NSSOC_LOGINF ("nstack rd ip age begin");
hlist_for_each_entry (tempdata, tempnode, &(hlist->headlist), rdnode)
{
/*if agetime equal 0, remove it */
if (tempdata->item.agetime <= 0)
{
if (prevdata)
{
NSSOC_LOGDBG
("stackid:%d, addrip:%u.%u.%u.%u, masklen:0x%x was aged",
tempdata->item.stack_id,
ip4_addr4_16 (&tempdata->item.ipdata.addr),
ip4_addr3_16 (&tempdata->item.ipdata.addr),
ip4_addr2_16 (&tempdata->item.ipdata.addr),
ip4_addr1_16 (&tempdata->item.ipdata.addr),
tempdata->item.ipdata.masklen);
hlist_del_init (prevnode);
free (prevdata);
}
prevdata = tempdata;
prevnode = tempnode;
}
else
{
tempdata->item.agetime--;
}
}
if (prevdata)
{
if (tempdata)
{
NSSOC_LOGDBG
("stackid:%d, addrip:%u.%u.%u.%u, masklen:0x%x was last aged",
tempdata->item.stack_id,
ip4_addr4_16 (&tempdata->item.ipdata.addr),
ip4_addr3_16 (&tempdata->item.ipdata.addr),
ip4_addr2_16 (&tempdata->item.ipdata.addr),
ip4_addr1_16 (&tempdata->item.ipdata.addr),
tempdata->item.ipdata.masklen);
}
hlist_del_init (prevnode);
free (prevdata);
}
NSSOC_LOGINF ("nstack rd ip age end");
return NSTACK_RD_SUCCESS;
}
/*
*find stackid by spec ip(multicast ip)
*input ip must netorder
*/
int
nstack_rd_ip_spec (void *rdkey)
{
nstack_rd_key *key = (nstack_rd_key *) rdkey;
unsigned int ip_addr = 0;
ip_addr = ntohl (key->ip_addr);
if (rd_ismulticast (ip_addr))
{
if (-1 == g_multi_stackid)
{
g_multi_stackid = nstack_get_stackid_byname (NSTACK_IP_MLSTACKID);
}
return g_multi_stackid;
}
return -1;
}
int
nstack_rd_ip_default (void *rdkey)
{
return NSTACK_GET_STACK (0);
}
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