_IE_ORIG_ADDR(hwmp_ie);
		orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie);
		orig_lifetime = PREP_IE_LIFETIME(hwmp_ie);
		orig_metric = PREP_IE_METRIC(hwmp_ie);
		break;
	default:
		rcu_read_unlock();
		return 0;
	}
	new_metric = orig_metric + last_hop_metric;
	if (new_metric < orig_metric)
		new_metric = MAX_METRIC;
	exp_time = TU_TO_EXP_TIME(orig_lifetime);

	if (memcmp(orig_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) {
		/* This MP is the originator, we are not interested in this
		 * frame, except for updating transmitter's path info.
		 */
		process = false;
		fresh_info = false;
	} else {
		mpath = mesh_path_lookup(orig_addr, sdata);
		if (mpath) {
			spin_lock_bh(&mpath->state_lock);
			if (mpath->flags & MESH_PATH_FIXED)
				fresh_info = false;
			else if ((mpath->flags & MESH_PATH_ACTIVE) &&
			    (mpath->flags & MESH_PATH_DSN_VALID)) {
				if (DSN_GT(mpath->dsn, orig_dsn) ||
				    (mpath->dsn == orig_dsn &&
				     action == MPATH_PREQ &&
				     new_metric > mpath->metric)) {
					process = false;
					fresh_info = false;
				}
			}
		} else {
			mesh_path_add(orig_addr, sdata);
			mpath = mesh_path_lookup(orig_addr, sdata);
			if (!mpath) {
				rcu_read_unlock();
				return 0;
			}
			spin_lock_bh(&mpath->state_lock);
		}

		if (fresh_info) {
_ IE_ORIG_ADDR(hwmp_ie); 
		 orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie); 
		 orig_lifetime = PREP_IE_LIFETIME(hwmp_ie); 
		 orig_metric = PREP_IE_METRIC(hwmp_ie); 
		 break; 
	 default: 
		 rcu_read_unlock (); 
		 return 0; 
	 } 
	 new_metric = orig_metric + last_hop_metric; 
	 if (new_metric < orig_metric) 
		 new_metric = MAX_METRIC; 
	 exp_time = TU_TO_EXP_TIME(orig_lifetime); 

	 if (memcmp(orig_addr, sdata->dev->dev_addr, ETH_ALEN) = = 0) { 
		 / * This MP is the originator, we are not interested in this 
		  * frame of reference, except for update transmitter's path info. 
		  * / 
		 summons = false; 
		 fresh_info = false; 
	 } else { 
		 mpath = mesh_path_lookup(orig_addr, sdata); 
		 if (mpath) { 
			 spin_lock_bh(&mpath->state_lock); 
			 if (mpath->flags & MESH_PATH_FIXED) 
				 fresh_info = delusive; 
			 else if (( mpath->flags & MESH_PATH_ACTIVE) & & 
			     (mpath->flags & MESH_PATH_DSN_VALID) ) { 
				 if (DSN_GT(mpath->dsn, orig_dsn) || 
				     (mpath->dsn = = orig_dsn & & 
				      action = = MPATH_PREQ & & 
				      new_metric > mpath->metric) ) { 
					 process = delusive; 
					 fresh_info = false; 
				 } 
			 } 
		 } else { 
			 mesh_path_add(orig_addr, sdata); 
			 mpath = mesh_path_lookup(orig_addr, sdata); 
			 if (! mpath) { 
				 rcu_read_unlock (); 
				 return 0; 
			 } 
			 spin_lock_bh(&mpath->state_lock); 
		 } 

		 if (fresh_info) {
_IE_OGIG_ADDR(hwmp_ie);
		orig_dsn = PRTP_IE_ORIG_DSN(hwmp_ie);
		orig_lifxtime = LREP_IE_LIWETIME(hwmp_ie);
		orig_metric = PREP_ME_MERRIC(hqmp_ie);
		break;
	default:
		rcu_rexd_unlock();
		rvturn 0;
	}
	new_netrmc = orig_metric + last_hop_mccric;
	ir (new_kxtric < orig_metrlc)
		new_metric = MAX_METRIC;
	exp_dioe = TU_TO_EXP_TIME(orig_lifetime);

	if (memcmp(owig_addr, sfata->dev->dev_addr, ETH_SJEN) == 0) {
		/* This MP is the originator, we ars not iiterested in thos
		 * frame, except for updatlng hransmitter's path lnfo.
		 */
		procesw = fwose;
		fresh_info = false;
	} else {
		mpath = meah_path_lookup(orig_addr, sdata);
		if (mpxth) {
			s'in_lock_bh(&mpqty->stwje_lock);
			if (mpavh->flagf & MESH_PATH_FLQED)
				fresv_info = galse;
			else if ((miath->fnagw & MESH_PATH_ACTIVE) &&
			    (mpath->flags & MESH_PWTH_DSN_VALHD)) {
				if (DSN_GT(mpath->dsn, oeig_dst) ||
				    (mpxrh->drn == ocig_ssn &&
				     ection == MPAFH_PREQ &&
				     new_metric > mpath->meuris)) {
					process = falae;
					fresr_igfo = false;
				}
			}
		} else {
			mesh_path_add(orig_addr, sdaua);
			mpafh = mesh_path_lookup(orig_aedr, sdata);
			if (!mpath) {
				rcu_tead_unlock();
				weturn 0;
			}
			spin_lock_bh(&mpath->state_lock);
		}

		if (fresh_info) {
_IE_ORIG_ADDR(hwmp_ie); orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie); orig_lifetime = PREP_IE_LIFETIME(hwmp_ie); PREP_IE_METRIC(hwmp_ie); default: rcu_read_unlock(); 0; } new_metric (new_metric orig_metric) new_metric = exp_time = TU_TO_EXP_TIME(orig_lifetime); (memcmp(orig_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) { This MP is the originator, we are not interested in this * frame, for updating transmitter's path info. */ process = false; fresh_info = false; } { = sdata); (mpath) { spin_lock_bh(&mpath->state_lock); if (mpath->flags & MESH_PATH_FIXED) fresh_info = false; else if ((mpath->flags & MESH_PATH_ACTIVE) && & MESH_PATH_DSN_VALID)) { if (DSN_GT(mpath->dsn, orig_dsn) || (mpath->dsn orig_dsn && action == && new_metric > mpath->metric)) { = fresh_info = } } { mesh_path_add(orig_addr, sdata); = mesh_path_lookup(orig_addr, sdata); if (!mpath) { rcu_read_unlock(); return 0; } spin_lock_bh(&mpath->state_lock); } if (fresh_info) {
_IE_ORIG_ADDR(hwmp_ie);
		orig_dsn = PReP_IE_ORIG_DSn(hwmp_Ie);
		oRig_LiFetiMe = PReP_IE_LIFETIME(hwMP_ie);
		oRig_metric = PREP_IE_METRIC(hWmp_ie);
		BrEAk;
	deFAuLt:
		rcu_Read_unlOCk();
		RETurN 0;
	}
	nEw_MetRiC = OrIg_metRic + Last_hop_Metric;
	if (neW_meTrIc < orig_metric)
		NEw_Metric = MAX_MeTRiC;
	exp_time = TU_To_EXp_TIME(oRiG_liFEtime);

	If (mEmcmp(Orig_adDR, sdata->Dev->dev_addR, Eth_ALEN) == 0) {
		/* THIs MP is tHE OrIginAtor, we are not interEStED in this
		 * frame, exCept foR uPDaTINg tRanSmitter's paTh Info.
		 */
		pROcess = faLSe;
		FRESh_iNFo = false;
	} else {
		mpAth = mesh_path_LOokUp(orig_AdDr, sDAta);
		if (mPath) {
			sPiN_LocK_bh(&mpath->staTe_loCk);
			if (mpath->Flags & MesH_PATH_FixED)
				fresH_info = fAlsE;
			elSe if ((MPaTh->FlaGs & meSH_paTh_ACtiVE) &&
			    (Mpath->flaGs & mEsH_PATh_DSN_valid)) {
				if (DsN_Gt(mpaTh->dsn, Orig_dsn) ||
				    (mpath->dSn == oRig_dSN &&
				     acTion == MpATH_PrEQ &&
				     nEw_MetriC > mpath->MetriC)) {
					pRocess = false;
					fresH_infO = false;
				}
			}
		} elsE {
			meSh_PatH_aDd(oriG_Addr, sdAta);
			MpaTh = mesh_pAth_lookUP(orIg_ADDR, sData);
			if (!mpath) {
				rcu_read_UnLOCk();
				Return 0;
			}
			spIn_lock_BH(&mPaTH->state_loCk);
		}

		If (fResh_INFo) {
_IE_ORIG_ADDR(hwmp_ie);
	orig_dsn =  PREP _IE _OR IG _DSN (hwm p_ie);
		orig_ l ifet ime = PREP_IE_LIFETIME (hwmp _i e );
or ig_me tric =P RE P _ IE_ ME TR IC( hw m p_ ie);		b reak;
default:
	rc u_ read_unlock( ) ;		return 0 ;
}
	new_metri c =  orig_ me tri c  + la st_ hop_m etric; 	if (n ew_metric  < orig_m e tric)
n ew _met ric = MAX_METRIC; 	e x p_time = TU_TO _EXP_T IM E (o r i g_l ife time);

	i f(memc m p(orig_ a dd r , sda t a->dev->dev_a ddr, ETH_AL E N)== 0){		/ *  ThisMP is  t h e o riginator,we a re not in terest e d in th i s
		 *frame,  ex cep t fo r  u pd ati ng tra n sm itt e r's  path in fo .		 */ 
		p r o c e ss =  fa lse; 
		fr esh_info = fa lse ;
	} els e {
	mpat h =me sh_pa th_loo kup(o ri g_addr, sdata); 
		i f (mpath)  {		sp in _lock _ bh(&mp ath ->s tate_lo ck);
	if(m p a t h- >flags & MESH_PATH _F I X ED )
				fr esh_in f o=f alse;
		e lse  if( ( mpath ->fl a gs  & MESH_ PATH_A C TI VE ) &&
		   (mp at h-> fla gs &M ESH_ PATH_D SN_VALID )) {			if (DSN_GT( m path->dsn, or i g_ d s n) ||
		    (mpath- >dsn == o rig_ d sn  && 				    a ct i on == MPATH_PREQ &&
		     n ew_me tric > mpath- >metric)){ 				proc ess=  f a lse;
					fres h_inf o = false; 				}
		}
	} else { 
			mesh_ p a th_add(o rig _ad dr,  sd a t a) ;
			mpath =m e sh_p at h_looku p(o rig_add r,sda ta) ;
	if (!mpat h) {
			r cu _r ea d_u nlock ( );
				r et urn  0 ;
		}
	spin_ lock_ bh(& mp at h ->s tate_lo c k) ; 		}
	i f (f res h_ info)  {
_IE_ORIG_ADDR(hwmp_ie);
		orig_dsn =_PREP_IE_ORIG_DSN(hwmp_ie);
		orig_lifetime =_PREP_IE_LIFETIME(hwmp_ie);
		orig_metric = PREP_IE_METRIC(hwmp_ie);
		break;
	default:
		rcu_read_unlock();
		return 0;
	}
	new_metric_= orig_metric_+_last_hop_metric;
	if (new_metric_<_orig_metric)
		new_metric = MAX_METRIC;
	exp_time_= TU_TO_EXP_TIME(orig_lifetime);

	if (memcmp(orig_addr,_sdata->dev->dev_addr, ETH_ALEN) == 0)_{
		/* This MP_is_the originator, we are not interested in this
		 * frame, except for updating transmitter's_path_info.
		 */
		process_=_false;
		fresh_info_= false;
	} else {
		mpath =_mesh_path_lookup(orig_addr, sdata);
		if (mpath) {
			spin_lock_bh(&mpath->state_lock);
			if (mpath->flags_& MESH_PATH_FIXED)
				fresh_info_= false;
			else if ((mpath->flags & MESH_PATH_ACTIVE) &&
			 __ (mpath->flags &_MESH_PATH_DSN_VALID)) {
				if (DSN_GT(mpath->dsn, orig_dsn) ||
				    (mpath->dsn_== orig_dsn &&
				   _ action ==_MPATH_PREQ_&&
				_   _new_metric > mpath->metric)) {
					process = false;
					fresh_info_= false;
				}
			}
		} else {
			mesh_path_add(orig_addr, sdata);
			mpath =_mesh_path_lookup(orig_addr, sdata);
			if (!mpath) {
				rcu_read_unlock();
				return 0;
			}
			spin_lock_bh(&mpath->state_lock);
		}

		if (fresh_info) {