From 77539c4471d4b3f19347d2efc99680f815e1c78a Mon Sep 17 00:00:00 2001 From: Ondrej Filip Date: Fri, 4 Jun 2004 17:12:27 +0000 Subject: hello.* reindented, code cleanup. --- proto/ospf/hello.c | 238 ++++++++++++++++++++++++++++------------------------- 1 file changed, 125 insertions(+), 113 deletions(-) (limited to 'proto/ospf/hello.c') diff --git a/proto/ospf/hello.c b/proto/ospf/hello.c index 2f7baac..6837858 100644 --- a/proto/ospf/hello.c +++ b/proto/ospf/hello.c @@ -9,112 +9,115 @@ #include "ospf.h" void -ospf_hello_receive(struct ospf_hello_packet *ps, struct proto *p, - struct ospf_iface *ifa, int size, ip_addr faddr) +ospf_hello_receive(struct ospf_hello_packet *ps, + struct ospf_iface *ifa, int size, ip_addr faddr) { u32 nrid, *pnrid; - struct ospf_neighbor *neigh,*n; - u8 i,twoway,oldpriority; - ip_addr olddr,oldbdr; + struct ospf_neighbor *neigh, *n; + u8 i, twoway, oldpriority; + ip_addr olddr, oldbdr; ip_addr mask; - char *beg=": Bad OSPF hello packet from ", *rec=" received: "; - int eligible=0; + char *beg = "Bad OSPF hello packet from ", *rec = " received: "; + int eligible = 0; pool *pool; + struct proto *p = (struct proto *) ifa->proto; - nrid=ntohl(((struct ospf_packet *)ps)->routerid); + nrid = ntohl(((struct ospf_packet *) ps)->routerid); - OSPF_TRACE(D_PACKETS, "Received hello from %I via %s",faddr,ifa->iface->name); - mask=ps->netmask; + OSPF_TRACE(D_PACKETS, "Received hello from %I via %s", faddr, + ifa->iface->name); + mask = ps->netmask; ipa_ntoh(mask); - if((unsigned)ipa_mklen(mask)!=ifa->iface->addr->pxlen) + if ((unsigned) ipa_mklen(mask) != ifa->iface->addr->pxlen) { - log("%s%s%I%sbad netmask %I.", p->name, beg, nrid, rec, - mask); + log(L_ERR, "%s%I%sbad netmask %I.", beg, nrid, rec, mask); return; } - - if(ntohs(ps->helloint)!=ifa->helloint) + + if (ntohs(ps->helloint) != ifa->helloint) { - log("%s%s%I%shello interval mismatch.", p->name, beg, faddr, rec); + log(L_WARN "%s%I%shello interval mismatch.", beg, faddr, rec); return; } - if(ntohl(ps->deadint)!=ifa->helloint*ifa->deadc) + if (ntohl(ps->deadint) != ifa->helloint * ifa->deadc) { - log("%s%s%I%sdead interval mismatch.", p->name, beg, faddr, rec); + log(L_ERR "%s%I%sdead interval mismatch.", beg, faddr, rec); return; } - if(ps->options!=ifa->options) + if (ps->options != ifa->options) { - log("%s%s%I%soptions mismatch.", p->name, beg, faddr, rec); + log(L_ERR "%s%I%soptions mismatch.", beg, faddr, rec); return; } - if((n=find_neigh(ifa, nrid))==NULL) + if ((n = find_neigh(ifa, nrid)) == NULL) { - if((ifa->type==OSPF_IT_NBMA)) + if ((ifa->type == OSPF_IT_NBMA)) { struct nbma_node *nn; - int found=0; + int found = 0; - WALK_LIST(nn,ifa->nbma_list) + WALK_LIST(nn, ifa->nbma_list) { - if(ipa_compare(faddr,nn->ip)==0) + if (ipa_compare(faddr, nn->ip) == 0) { - found=1; + found = 1; break; } } - if((found==0)&&(ifa->strictnbma)) + if ((found == 0) && (ifa->strictnbma)) { - log("%s: Ignoring new neighbor: %I on %s.", p->name, faddr, - ifa->iface->name); + log(L_WARN "Ignoring new neighbor: %I on %s.", faddr, + ifa->iface->name); return; } - if(found) + if (found) { - eligible=nn->eligible; - if(((ps->priority==0)&&eligible)||((ps->priority>0)&&(eligible==0))) - { - log("%s: Eligibility mismatch for neighbor: %I on %s", p->name, - faddr, ifa->iface->name); + eligible = nn->eligible; + if (((ps->priority == 0) && eligible) + || ((ps->priority > 0) && (eligible == 0))) + { + log(L_ERR "Eligibility mismatch for neighbor: %I on %s", + faddr, ifa->iface->name); return; - } + } } } OSPF_TRACE(D_EVENTS, "New neighbor found: %I on %s.", faddr, - ifa->iface->name); + ifa->iface->name); n = ospf_neighbor_new(ifa); - n->rid=nrid; - n->ip=faddr; - n->dr=ps->dr; + n->rid = nrid; + n->ip = faddr; + n->dr = ps->dr; ipa_ntoh(n->dr); - n->bdr=ps->bdr; + n->bdr = ps->bdr; ipa_ntoh(n->bdr); - n->priority=ps->priority; - n->options=ps->options; + n->priority = ps->priority; + n->options = ps->options; } ospf_neigh_sm(n, INM_HELLOREC); - pnrid=(u32 *)((struct ospf_hello_packet *)(ps+1)); + pnrid = (u32 *) ((struct ospf_hello_packet *) (ps + 1)); - twoway=0; - for(i=0;icf->global->router_id) + if (ntohl(*(pnrid + i)) == p->cf->global->router_id) { DBG("%s: Twoway received from %I\n", p->name, faddr); ospf_neigh_sm(n, INM_2WAYREC); - twoway=1; + twoway = 1; break; } } - if(!twoway) ospf_neigh_sm(n, INM_1WAYREC); + if (!twoway) + ospf_neigh_sm(n, INM_1WAYREC); olddr = n->dr; n->dr = ipa_ntoh(ps->dr); @@ -124,39 +127,43 @@ ospf_hello_receive(struct ospf_hello_packet *ps, struct proto *p, n->priority = ps->priority; /* Check priority change */ - if(n->state>=NEIGHBOR_2WAY) + if (n->state >= NEIGHBOR_2WAY) { - if(n->priority!=oldpriority) ospf_int_sm(ifa, ISM_NEICH); + if (n->priority != oldpriority) + ospf_int_sm(ifa, ISM_NEICH); /* Router is declaring itself ad DR and there is no BDR */ - if((ipa_compare(n->ip,n->dr)==0) && (ipa_to_u32(n->bdr)==0) - && (n->state!=NEIGHBOR_FULL)) + if ((ipa_compare(n->ip, n->dr) == 0) && (ipa_to_u32(n->bdr) == 0) + && (n->state != NEIGHBOR_FULL)) ospf_int_sm(ifa, ISM_BACKS); /* Neighbor is declaring itself as BDR */ - if((ipa_compare(n->ip,n->bdr)==0) && (n->state!=NEIGHBOR_FULL)) + if ((ipa_compare(n->ip, n->bdr) == 0) && (n->state != NEIGHBOR_FULL)) ospf_int_sm(ifa, ISM_BACKS); /* Neighbor is newly declaring itself as DR or BDR */ - if(((ipa_compare(n->ip,n->dr)==0) && (ipa_compare(n->dr,olddr)!=0)) - || ((ipa_compare(n->ip,n->bdr)==0) && (ipa_compare(n->bdr,oldbdr)!=0))) + if (((ipa_compare(n->ip, n->dr) == 0) && (ipa_compare(n->dr, olddr) != 0)) + || ((ipa_compare(n->ip, n->bdr) == 0) + && (ipa_compare(n->bdr, oldbdr) != 0))) ospf_int_sm(ifa, ISM_NEICH); /* Neighbor is no more declaring itself as DR or BDR */ - if(((ipa_compare(n->ip,olddr)==0) && (ipa_compare(n->dr,olddr)!=0)) - || ((ipa_compare(n->ip,oldbdr)==0) && (ipa_compare(n->bdr,oldbdr)!=0))) + if (((ipa_compare(n->ip, olddr) == 0) && (ipa_compare(n->dr, olddr) != 0)) + || ((ipa_compare(n->ip, oldbdr) == 0) + && (ipa_compare(n->bdr, oldbdr) != 0))) ospf_int_sm(ifa, ISM_NEICH); } - if(ifa->type!=OSPF_IT_NBMA) + if (ifa->type != OSPF_IT_NBMA) { - if((ifa->priority==0)&&(n->priority>0)) ospf_hello_send(NULL, 0, n); + if ((ifa->priority == 0) && (n->priority > 0)) + ospf_hello_send(NULL, 0, n); } ospf_neigh_sm(n, INM_HELLOREC); } void -ospf_hello_send(timer *timer,int poll, struct ospf_neighbor *dirn) +ospf_hello_send(timer * timer, int poll, struct ospf_neighbor *dirn) { struct ospf_iface *ifa; struct ospf_hello_packet *pkt; @@ -167,104 +174,109 @@ ospf_hello_send(timer *timer,int poll, struct ospf_neighbor *dirn) u32 *pp; u8 i; - if(timer==NULL) ifa=dirn->ifa; - else ifa=(struct ospf_iface *)timer->data; + if (timer == NULL) + ifa = dirn->ifa; + else + ifa = (struct ospf_iface *) timer->data; - if(ifa->stub) return; /* Don't send any packet on stub iface */ + if (ifa->stub) + return; /* Don't send any packet on stub iface */ - p=(struct proto *)(ifa->proto); + p = (struct proto *) (ifa->proto); DBG("%s: Hello/Poll timer fired on interface %s.\n", - p->name, ifa->iface->name); + p->name, ifa->iface->name); /* Now we should send a hello packet */ /* First a common packet header */ - if(ifa->type!=OSPF_IT_NBMA) + if (ifa->type != OSPF_IT_NBMA) { - pkt=(struct ospf_hello_packet *)(ifa->hello_sk->tbuf); + pkt = (struct ospf_hello_packet *) (ifa->hello_sk->tbuf); } - else + else { - pkt=(struct ospf_hello_packet *)(ifa->ip_sk->tbuf); + pkt = (struct ospf_hello_packet *) (ifa->ip_sk->tbuf); } /* Now fill ospf_hello header */ - op=(struct ospf_packet *)pkt; + op = (struct ospf_packet *) pkt; fill_ospf_pkt_hdr(ifa, pkt, HELLO_P); - pkt->netmask=ipa_mkmask(ifa->iface->addr->pxlen); + pkt->netmask = ipa_mkmask(ifa->iface->addr->pxlen); ipa_hton(pkt->netmask); - pkt->helloint=ntohs(ifa->helloint); - pkt->options=ifa->options; - pkt->priority=ifa->priority; - pkt->deadint=htonl(ifa->deadc*ifa->helloint); - pkt->dr=ifa->drip; + pkt->helloint = ntohs(ifa->helloint); + pkt->options = ifa->options; + pkt->priority = ifa->priority; + pkt->deadint = htonl(ifa->deadc * ifa->helloint); + pkt->dr = ifa->drip; ipa_hton(pkt->dr); - pkt->bdr=ifa->bdrip; + pkt->bdr = ifa->bdrip; ipa_hton(pkt->bdr); /* Fill all neighbors */ - i=0; - pp=(u32 *)(((u8 *)pkt)+sizeof(struct ospf_hello_packet)); - WALK_LIST (neigh, ifa->neigh_list) + i = 0; + pp = (u32 *) (((u8 *) pkt) + sizeof(struct ospf_hello_packet)); + WALK_LIST(neigh, ifa->neigh_list) { - *(pp+i)=htonl(neigh->rid); + *(pp + i) = htonl(neigh->rid); i++; } - length=sizeof(struct ospf_hello_packet)+i*sizeof(u32); - op->length=htons(length); + length = sizeof(struct ospf_hello_packet) + i * sizeof(u32); + op->length = htons(length); ospf_pkt_finalize(ifa, op); - /* And finally send it :-) */ - if(ifa->type!=OSPF_IT_NBMA) + /* And finally send it :-) */ + if (ifa->type != OSPF_IT_NBMA) { - sk_send(ifa->hello_sk,length); + sk_send(ifa->hello_sk, length); } - else /* NBMA */ + else /* NBMA */ { struct ospf_neighbor *n1; struct nbma_node *nb; int send; - if(timer==NULL) /* Response to received hello */ + if (timer == NULL) /* Response to received hello */ { sk_send_to(ifa->ip_sk, length, dirn->ip, OSPF_PROTO); } else { - int toall=0; - int meeli=0; - if(ifa->state>OSPF_IS_DROTHER) toall=1; - if(ifa->priority>0) meeli=1; - - WALK_LIST(nb,ifa->nbma_list) + int toall = 0; + int meeli = 0; + if (ifa->state > OSPF_IS_DROTHER) + toall = 1; + if (ifa->priority > 0) + meeli = 1; + + WALK_LIST(nb, ifa->nbma_list) { - send=1; - WALK_LIST(n1, ifa->neigh_list) - { - if(ipa_compare(nb->ip,n1->ip)==0) + send = 1; + WALK_LIST(n1, ifa->neigh_list) + { + if (ipa_compare(nb->ip, n1->ip) == 0) { - send=0; + send = 0; break; - } - } - if((poll==1)&&(send)) + } + } + if ((poll == 1) && (send)) { - if(toall||(meeli&&nb->eligible)) - sk_send_to(ifa->ip_sk, length, nb->ip, OSPF_PROTO); + if (toall || (meeli && nb->eligible)) + sk_send_to(ifa->ip_sk, length, nb->ip, OSPF_PROTO); } } - if(poll==0) + if (poll == 0) { - WALK_LIST(n1,ifa->neigh_list) - { - if(toall||(n1->rid==ifa->drid)||(n1->rid==ifa->bdrid)|| - (meeli&&(n1->priority>0))) - sk_send_to(ifa->ip_sk, length, n1->ip, OSPF_PROTO); - } + WALK_LIST(n1, ifa->neigh_list) + { + if (toall || (n1->rid == ifa->drid) || (n1->rid == ifa->bdrid) || + (meeli && (n1->priority > 0))) + sk_send_to(ifa->ip_sk, length, n1->ip, OSPF_PROTO); + } } } } - OSPF_TRACE(D_PACKETS, "Hello sent via %s",ifa->iface->name); + OSPF_TRACE(D_PACKETS, "Hello sent via %s", ifa->iface->name); } -- cgit v1.2.3