📄 lms.c
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short p;
unsigned char * head = MPLS_NULL;
p = -1;
for(t = 0; t <local_label_busy_flags.interface_num; t ++ )
{
if((label_rel -> module == local_label_busy_flags.interface[t].module)&&
(label_rel -> port == local_label_busy_flags.interface[t].port))
{
p = t;
break;
}
}
if(p < 0)
{
label_ack->ack = MPLS_FAIL;
return;
}
head = &(local_label_busy_flags.busyAtmLabelFlags[p][0]);
vpi = label_rel->label.atm_label.label.flags.vpi;
vci = label_rel->label.atm_label.label.flags.vci;
sit = vpi*(local_label_busy_flags.maxvci[p]+1)+vci+1;
exit = mpls_rel_label_busy(sit, head);
if(exit != MPLS_FALSE)
{
label_ack->ack = MPLS_FAIL;
}
else
{
label_ack->ack = MPLS_SUCCESS;
if(local_label_busy_flags.interface[p].session_index != 0)
{
/* notify ldp , has label is use */
SndNotMsg(local_label_busy_flags.interface[p].session_index,\
LBLRESRCAVA,0,0);
local_label_busy_flags.interface[p].session_index = 0;
}
}
return;
}
/***********************************************************************/
/* FUNCTION NAME : mpls_lms_rel_genlabel()
/* DESCRIPTION: : release gen label
/* INPUT : unsigned long genlbl
/* OUTPUT : unsigned char
/* AUTHOR/DATE : shi.zhaohui/ 02.06.19
/* GLOBAL : none
/* History : 02-12-12 szh mod for avoid error
/************************************************************************/
unsigned char mpls_lms_rel_genlabel(unsigned long genlbl )
{
genlabel_link *templbl, *nextlbl;
if(genlabel_head == MPLS_NULL)
{
return MPLS_TRUE;
}
else
{
templbl = genlabel_head;
if(genlbl < genlabel_head->minlabel)
{
/* MPLS_ASSERT(0); */
return MPLS_TRUE;
}
do
{
// printf("release gen label: %d",genlbl);
nextlbl = templbl;
if((genlbl <= nextlbl -> maxlabel)&&(genlbl >= nextlbl -> minlabel)) /* to avoid rel label does not exist */
{
apartgenlbl(genlbl,nextlbl);
if(genlabel_busy_flag == 1)
{
/* inform ldp can hunt label */
genlabel_busy_flag = 0;
}
break;
}
else
{
if(genlbl < nextlbl -> minlabel) /* to avoid continuing comparison */
{
printf("label does not belong to any segment.");
break;
}
templbl = (genlabel_link *)nextlbl -> next;
}
}while(templbl != MPLS_NULL);
}
return MPLS_TRUE;
}
/***********************************************************************/
/* FUNCTION NAME : apartgenlbl()
/* DESCRIPTION: : apart one gen label area into two gen label
/* INPUT : unsigned long genlbl, genlabel_link *apartlbl
/* OUTPUT : void
/* AUTHOR/DATE : shi.zhaohui/ 02.06.19
/* GLOBAL : none
/* History :
/* wengqing 2002.12.25 modify release label block
/************************************************************************/
unsigned char apartgenlbl(unsigned long genlbl, genlabel_link *apartlbl)
{
genlabel_link *templbl, *newlbl, *temp1lbl;
if(genlbl == MPLS_LABEL_MIN)
{
genlbl_min_busy = 0;
}
if((genlbl == apartlbl -> maxlabel)&&
(genlbl == apartlbl -> minlabel))
{
if(apartlbl->front)
apartlbl->front->next = apartlbl->next;
if(apartlbl->next)
apartlbl->next->front = apartlbl->front;
if(apartlbl == genlabel_head)
genlabel_head = apartlbl->next;
apartlbl->minlabel = 0;
apartlbl->maxlabel = 0;
apartlbl->front = MPLS_NULL;
apartlbl->next = MPLS_NULL;
/* free(apartlbl); */
MPLS_MEM_FREE(apartlbl, genlblmem);
apartlbl = MPLS_NULL;
}
else /* apart this label */
{
if(genlbl == apartlbl -> maxlabel)
{
apartlbl -> maxlabel = apartlbl -> maxlabel - 1;
}
else if(genlbl == apartlbl -> minlabel)
{
apartlbl -> minlabel = apartlbl -> minlabel + 1;
}
else
{
newlbl = MPLS_NULL;
MPLS_MEM_ALLOC(newlbl,(genlabel_link *),sizeof(genlabel_link),genlblmem);
if(newlbl == MPLS_NULL)
{
printf(" no apply enough memory(lms) !!!!");
#ifdef MPLS_LMS_DEBUG
MPLS_ASSERT(newlbl);
#endif
return MPLS_MEMORY_ERROR;
}
newlbl -> next = apartlbl ->next;
/*hyh*/
if(apartlbl ->next)
apartlbl ->next->front = newlbl;
/**/
apartlbl ->next = newlbl;
newlbl -> front = apartlbl;
newlbl -> maxlabel = apartlbl -> maxlabel;
newlbl -> minlabel = genlbl + 1;
apartlbl -> maxlabel = genlbl - 1;
}
}
return MPLS_TRUE;
}
/*****************************************************************************/
/* mpls_ifindex2module(MPLS_IFINDEX2MOD_REQ * mpls_ifindex2mod_req, */
/* MPLS_IFINDEX2MOD_ACK * mpls_ifindex2mod_ack) */
/* may for global use */
/* hyh 2003-3-24 modify mpls_ifindex2module,get port from MplsPortDataTable */
/* szh mod 2003-8-29 改成从MplsPortDataTable1中取数据是为了避免当有配置发生变化
时，MplsPortDataTable是发消息到MFU要数据，在发消息时此表是清空的，如果这个时候LDP
建路会发生错误这种情况。 当MplsPortDataTable从MFU要全数据后再更改MplsPortDataTable1*/
/*****************************************************************************/
void mpls_ifindex2module(MPLS_IFINDEX2MOD_REQ * mpls_ifindex2mod_req,
MPLS_IFINDEX2MOD_ACK * mpls_ifindex2mod_ack,
unsigned short ModorPortorIf)
{
unsigned short port;
unsigned short mod;
unsigned short i,j;
mod = mpls_ifindex2mod_req->ifIndex / MPLS_NIC_MAX_IF;
mpls_ifindex2mod_ack->ack = MPLS_FAIL;
if(mpls_ifindex2mod_req->mpls_platform == MPLS_PLATFORM_M1000)
{
if(mpls_ifindex2mod_req->mpls_protocol_type ==
MPLS_LABEL_SWITCH_PROTOCOL_ATM)
{
mpls_ifindex2mod_ack->mod = 0;
}
}
else if(mpls_ifindex2mod_req->mpls_platform == MPLS_PLATFORM_BX)
{
if(mpls_ifindex2mod_req->mpls_protocol_type ==
MPLS_LABEL_SWITCH_PROTOCOL_ATM)
{
mpls_ifindex2mod_ack->mod = mod+1;
}
}
else if(mpls_ifindex2mod_req->mpls_platform == MPLS_PLATFORM_AX)
{
if(mpls_ifindex2mod_req->mpls_protocol_type ==
MPLS_LABEL_SWITCH_PROTOCOL_ATM)
{
mpls_ifindex2mod_ack->mod = mod+6;
}
}
else if(mpls_ifindex2mod_req->mpls_platform == MPLS_PLATFORM_M2000)
{
if(mpls_ifindex2mod_req->mpls_protocol_type ==
MPLS_LABEL_SWITCH_PROTOCOL_ATM)
{
if(mpls_ifindex2mod_req->ifIndex == 15||mpls_ifindex2mod_req->ifIndex == 16)
mpls_ifindex2mod_ack->mod = 0; /* MMU */
else
mpls_ifindex2mod_ack->mod = mod+5;
}
}
for(i=0;i<MplsPortDataTable1.num;i++)
{
#ifdef __INSTALL_V22
if(((MplsPortDataTable1.mplsModule[i].cardType >=MPLS_CARDTYPE_LIC1)
&&(MplsPortDataTable1.mplsModule[i].cardType <=MPLS_APCLIC_END))||
((MplsPortDataTable1.mplsModule[i].cardType >=MPLS_CARDTYPE_GEI)
&&(MplsPortDataTable1.mplsModule[i].cardType <=MPLS_GEICARD_END))||
((MplsPortDataTable1.mplsModule[i].cardType >=MPLS_CARDTYPE_MPU)
&&(MplsPortDataTable1.mplsModule[i].cardType <=MPLS_MPU_END)))
#else
if((MplsPortDataTable1.mplsModule[i].cardType==MPLS_CARDTYPE_MPU) ||
(MplsPortDataTable1.mplsModule[i].cardType>=MPLS_CARDTYPE_LIC1 &&
MplsPortDataTable1.mplsModule[i].cardType<=MPLS_CARDTYPE_LIC10))
#endif
{
for(j=0; j<MplsPortDataTable1.mplsModule[i].num; j++)
{
if(mpls_ifindex2mod_req->ifIndex==MplsPortDataTable1.mplsModule[i].portData[j].ifIndex)
{
mpls_ifindex2mod_ack -> ack = MPLS_SUCCESS;
mpls_ifindex2mod_ack->port = MplsPortDataTable1.mplsModule[i].portData[j].port;
break;
}
}
}
if(mpls_ifindex2mod_ack -> ack == MPLS_SUCCESS)
break;
}
return ;
}
/***********************************************************************/
/* FUNCTION NAME : rel_busy_flag()
/* DESCRIPTION: : when module alarm, delete the internal-module label range
/* INPUT : unsigned char module
/* OUTPUT : void
/* AUTHOR/DATE : weng.qing/ 03.06.23
/* GLOBAL : local_label_busy_flags
/* History :
/* 2003-8-13 szh mod i被重复使用，再定义一个变量t
/************************************************************************/
void rel_busy_flag(unsigned char module, unsigned char port)
{
unsigned short i, flag = 0, tuple, t;
i = 0xffff;
if(port == 0)
{
for(t = 0; t < local_label_busy_flags.interface_num; t++)
{
if((local_label_busy_flags.interface[t].module == module)&&
(local_label_busy_flags.interface[t].port == 0))
{
i = t;
break;
}
}
}
else if(port == 1)
{
if(mplsOamLocalPlatformType==MPLS_OAM_PLATFORM_M1000)
{
module += 4;
}
for(t = 0; t < local_label_busy_flags.interface_num; t++)
{
if((local_label_busy_flags.interface[t].module == 0)&&
(local_label_busy_flags.interface[t].port == module))
{
i = t;
break;
}
}
}
if(i != 0xffff)
{
memcpy(&local_label_busy_flags.interface[i],&local_label_busy_flags.interface[i+1],\
(local_label_busy_flags.interface_num-i-1)*sizeof(mpls_lms_atm_interface));
memcpy(&local_label_busy_flags.minvci[i],&local_label_busy_flags.minvci[i+1],\
(local_label_busy_flags.interface_num-i-1)*sizeof(unsigned short));
memcpy(&local_label_busy_flags.minvpi[i],&local_label_busy_flags.minvpi[i+1],\
(local_label_busy_flags.interface_num-i-1)*sizeof(unsigned short));
memcpy(&local_label_busy_flags.maxvci[i],&local_label_busy_flags.maxvci[i+1],\
(local_label_busy_flags.interface_num-i-1)*sizeof(unsigned short));
memcpy(&local_label_busy_flags.maxvpi[i],&local_label_busy_flags.maxvpi[i+1],\
(local_label_busy_flags.interface_num-i-1)*sizeof(unsigned short));
memcpy(&local_label_busy_flags.busyAtmLabelFlags[i][0], \
&local_label_busy_flags.busyAtmLabelFlags[i+1][0],\
(local_label_busy_flags.interface_num-i-1)*sizeof(unsigned char)*2*1024);
local_label_busy_flags.interface_num--;
}
}
void mpls_ldp_configtbl( )
{
if(MplsPortDataTable.num>0)
{
MPLS_MEMSET(&MplsPortDataTable1, 0, sizeof(mplsPort_t));
MPLS_MEMCPY(&MplsPortDataTable1, &MplsPortDataTable,sizeof(mplsPort_t));
}
return;
}
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