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-rw-r--r--net/ipv6/route.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 1a326af18f28..cd60bcca1064 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -478,7 +478,6 @@ static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, struct in6_addr *d
478if (rt == &ip6_null_entry && strict) { \ 478if (rt == &ip6_null_entry && strict) { \
479 while ((fn = fn->parent) != NULL) { \ 479 while ((fn = fn->parent) != NULL) { \
480 if (fn->fn_flags & RTN_ROOT) { \ 480 if (fn->fn_flags & RTN_ROOT) { \
481 dst_hold(&rt->u.dst); \
482 goto out; \ 481 goto out; \
483 } \ 482 } \
484 if (fn->fn_flags & RTN_RTINFO) \ 483 if (fn->fn_flags & RTN_RTINFO) \
@@ -508,17 +507,17 @@ restart:
508 if ((rt->rt6i_flags & RTF_CACHE)) { 507 if ((rt->rt6i_flags & RTF_CACHE)) {
509 rt = rt6_device_match(rt, skb->dev->ifindex, strict); 508 rt = rt6_device_match(rt, skb->dev->ifindex, strict);
510 BACKTRACK(); 509 BACKTRACK();
511 dst_hold(&rt->u.dst);
512 goto out; 510 goto out;
513 } 511 }
514 512
515 rt = rt6_device_match(rt, skb->dev->ifindex, strict); 513 rt = rt6_device_match(rt, skb->dev->ifindex, strict);
516 BACKTRACK(); 514 BACKTRACK();
517 515
516 dst_hold(&rt->u.dst);
517 read_unlock_bh(&rt6_lock);
518
518 if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP)) { 519 if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP)) {
519 struct rt6_info *nrt; 520 struct rt6_info *nrt;
520 dst_hold(&rt->u.dst);
521 read_unlock_bh(&rt6_lock);
522 521
523 nrt = rt6_cow(rt, &skb->nh.ipv6h->daddr, 522 nrt = rt6_cow(rt, &skb->nh.ipv6h->daddr,
524 &skb->nh.ipv6h->saddr, 523 &skb->nh.ipv6h->saddr,
@@ -536,14 +535,16 @@ restart:
536 dst_release(&rt->u.dst); 535 dst_release(&rt->u.dst);
537 goto relookup; 536 goto relookup;
538 } 537 }
539 dst_hold(&rt->u.dst);
540 538
541out:
542 read_unlock_bh(&rt6_lock);
543out2: 539out2:
544 rt->u.dst.lastuse = jiffies; 540 rt->u.dst.lastuse = jiffies;
545 rt->u.dst.__use++; 541 rt->u.dst.__use++;
546 skb->dst = (struct dst_entry *) rt; 542 skb->dst = (struct dst_entry *) rt;
543 return;
544out:
545 dst_hold(&rt->u.dst);
546 read_unlock_bh(&rt6_lock);
547 goto out2;
547} 548}
548 549
549struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl) 550struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
@@ -566,7 +567,6 @@ restart:
566 if ((rt->rt6i_flags & RTF_CACHE)) { 567 if ((rt->rt6i_flags & RTF_CACHE)) {
567 rt = rt6_device_match(rt, fl->oif, strict); 568 rt = rt6_device_match(rt, fl->oif, strict);
568 BACKTRACK(); 569 BACKTRACK();
569 dst_hold(&rt->u.dst);
570 goto out; 570 goto out;
571 } 571 }
572 if (rt->rt6i_flags & RTF_DEFAULT) { 572 if (rt->rt6i_flags & RTF_DEFAULT) {
@@ -577,10 +577,11 @@ restart:
577 BACKTRACK(); 577 BACKTRACK();
578 } 578 }
579 579
580 dst_hold(&rt->u.dst);
581 read_unlock_bh(&rt6_lock);
582
580 if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP)) { 583 if (!rt->rt6i_nexthop && !(rt->rt6i_flags & RTF_NONEXTHOP)) {
581 struct rt6_info *nrt; 584 struct rt6_info *nrt;
582 dst_hold(&rt->u.dst);
583 read_unlock_bh(&rt6_lock);
584 585
585 nrt = rt6_cow(rt, &fl->fl6_dst, &fl->fl6_src, NULL); 586 nrt = rt6_cow(rt, &fl->fl6_dst, &fl->fl6_src, NULL);
586 587
@@ -596,14 +597,14 @@ restart:
596 dst_release(&rt->u.dst); 597 dst_release(&rt->u.dst);
597 goto relookup; 598 goto relookup;
598 } 599 }
599 dst_hold(&rt->u.dst);
600
601out:
602 read_unlock_bh(&rt6_lock);
603out2: 600out2:
604 rt->u.dst.lastuse = jiffies; 601 rt->u.dst.lastuse = jiffies;
605 rt->u.dst.__use++; 602 rt->u.dst.__use++;
606 return &rt->u.dst; 603 return &rt->u.dst;
604out:
605 dst_hold(&rt->u.dst);
606 read_unlock_bh(&rt6_lock);
607 goto out2;
607} 608}
608 609
609 610