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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_priv.h"
#include "nstack_rd_ip6.h"
#include "nstack_log.h"
#include "nstack_securec.h"
#include "nstack_ip_addr.h"
inline static const char *ip6_ntoa(const ip6_addr_t * addr)
{
#define IP6_NTOA_NUM (1 << 3)
#define IP6_NTOA_LEN 46
static __thread char ip6_ntoa_buf[IP6_NTOA_NUM][IP6_NTOA_LEN];
static __thread unsigned int ip6_ntoa_index = 0;
char *buf = ip6_ntoa_buf[(ip6_ntoa_index++) & (IP6_NTOA_NUM - 1)];
return inet_ntop(AF_INET, addr, buf, IP6_NTOA_LEN);
}
int nstack_rd_ip6_data_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->ip6data = pdata->ip6data;
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 network byte order
*/
/*vars are used in macro*/
int nstack_rd_ip6_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;
rd_data_item *pitem = (rd_data_item *) rditem;
char buf[52];
NSSOC_LOGDBG("stackid:%d, ip6addr:%s masklen:0x%x was inserted",
pitem->stack_id, inet_ntop(AF_INET6, &pitem->ip6data.addr,
buf, sizeof(buf)),
pitem->ip6data.masklen);
pdatanode = (nstack_rd_node *) malloc(sizeof(nstack_rd_node)); /*this function is necessary */
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); /*this function is necessary */
return NSTACK_RD_FAIL;
}
INIT_HLIST_NODE(&pdatanode->rdnode);
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;
if (pitem->ip6data.masklen < tempdata->item.ip6data.masklen)
{
continue;
}
/*if already exist, just return success */
if (pitem->ip6data.masklen == tempdata->item.ip6data.masklen &&
ip6_addr_match(&pitem->ip6data.addr,
&tempdata->item.ip6data.addr,
pitem->ip6data.masklen))
{
NSSOC_LOGDBG
("insert ip6:%s, mask:0x%x, stack_id:%d, exist orgid:%d",
inet_ntop(AF_INET6, &pitem->ip6data.addr, buf,
sizeof(buf)), pitem->ip6data.masklen,
pitem->stack_id, tempdata->item.stack_id);
tempdata->item.stack_id = pitem->stack_id;
tempdata->item.agetime = NSTACK_RD_AGETIME_MAX;
free(pdatanode); /*this function is necessary */
return NSTACK_RD_SUCCESS;
}
hlist_add_before(&(pdatanode->rdnode), tempnode);
return NSTACK_RD_SUCCESS;
}
hlist_add_after(tem, &(pdatanode->rdnode));
return NSTACK_RD_SUCCESS;
}
int nstack_rd_ip6_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;
char buf[46];
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, addrip6:%s, masklen:0x%x was aged",
tempdata->item.stack_id,
inet_ntop(AF_INET6,
&tempdata->item.ip6data.addr, buf,
sizeof(buf)),
tempdata->item.ip6data.masklen);
hlist_del_init(prevnode);
free(prevdata); /*this function is necessary */
}
prevdata = tempdata;
prevnode = tempnode;
}
else
{
tempdata->item.agetime--;
}
}
if (prevdata)
{
if (tempdata)
{
NSSOC_LOGDBG
("stackid:%d, addrip6:%s, masklen:0x%x was last aged",
tempdata->item.stack_id, inet_ntop(AF_INET6,
&tempdata->item.
ip6data.addr, buf,
sizeof(buf)),
tempdata->item.ip6data.masklen);
}
hlist_del_init(prevnode);
free(prevdata); /*this function is necessary */
}
NSSOC_LOGINF("nstack rd ip age end");
return NSTACK_RD_SUCCESS;
}
void nstack_rd_ip6_item_clean(nstack_rd_list * hlist)
{
struct hlist_node *tempnode = NULL;
nstack_rd_node *tempdata = NULL;
nstack_rd_node *prevdata = NULL;
struct hlist_node *prevnode = NULL;
char buf[46];
NSSOC_LOGINF("nstack rd ip clean begin");
hlist_for_each_entry(tempdata, tempnode, &(hlist->headlist), rdnode)
{
if (prevdata)
{
NSSOC_LOGDBG("stackid:%d, addrip6:%s, masklen:0x%x was aged",
tempdata->item.stack_id,
inet_ntop(AF_INET6, &tempdata->item.ip6data.addr,
buf, sizeof(buf)),
tempdata->item.ip6data.masklen);
hlist_del_init(prevnode);
free(prevdata); /*this function is necessary */
}
prevdata = tempdata;
prevnode = tempnode;
}
if (prevdata)
{
if (tempdata)
{
NSSOC_LOGDBG
("stackid:%d, addrip6:%s, masklen:0x%x was last aged",
tempdata->item.stack_id, inet_ntop(AF_INET6,
&tempdata->item.
ip6data.addr, buf,
sizeof(buf)),
tempdata->item.ip6data.masklen);
}
hlist_del_init(prevnode);
free(prevdata); /*this function is necessary */
}
NSSOC_LOGINF("nstack rd ip clean end");
}
int nstack_rd_ip6_item_find(nstack_rd_list * hlist, void *rdkey,
void *outitem)
{
struct hlist_node *tempnode = NULL;
nstack_rd_node *tempdata = NULL;
nstack_rd_key *key = (nstack_rd_key *) rdkey;
char buf[46];
hlist_for_each_entry(tempdata, tempnode, &(hlist->headlist), rdnode)
{
rd_data_item *tempitem = &tempdata->item;
/*if already exist, just return success */
if (ip6_addr_match
((struct ip6_addr *) &key->in6_addr, &tempitem->ip6data.addr,
tempitem->ip6data.masklen))
{
*(rd_data_item *) outitem = *tempitem;
return NSTACK_RD_SUCCESS;
}
}
NSSOC_LOGDBG("ip6=%s item not found",
inet_ntop(AF_INET6, &key->in6_addr, buf, sizeof(buf)));
return NSTACK_RD_FAIL;
}
int nstack_rd_ip6_spec(void *rdkey)
{
return -1;
}
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