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[IPV4]: Fix nexthop realm dumping for multipath routes

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Routing realms exist per nexthop, but are only returned to userspace
for the first nexthop. This is due to the fact that iproute2 only
allows to set the realm for the first nexthop and the kernel refuses
multipath routes where only a single realm is present.

Dump all realms for multipath routes to enable iproute to correctly
display them.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-07-21 15:09:55 -07:00 committed by David S. Miller
parent 9ed36279f6
commit 8265abc082
1 changed files with 8 additions and 4 deletions
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12
net/ipv4/fib_semantics.c
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@ -961,10 +961,6 @@ fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
rtm->rtm_protocol = fi->fib_protocol;
if (fi->fib_priority)
RTA_PUT(skb, RTA_PRIORITY, 4, &fi->fib_priority);
#ifdef CONFIG_NET_CLS_ROUTE
if (fi->fib_nh[0].nh_tclassid)
RTA_PUT(skb, RTA_FLOW, 4, &fi->fib_nh[0].nh_tclassid);
#endif
if (rtnetlink_put_metrics(skb, fi->fib_metrics) < 0)
goto rtattr_failure;
if (fi->fib_prefsrc)
@ -974,6 +970,10 @@ fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
RTA_PUT(skb, RTA_GATEWAY, 4, &fi->fib_nh->nh_gw);
if (fi->fib_nh->nh_oif)
RTA_PUT(skb, RTA_OIF, sizeof(int), &fi->fib_nh->nh_oif);
#ifdef CONFIG_NET_CLS_ROUTE
if (fi->fib_nh[0].nh_tclassid)
RTA_PUT(skb, RTA_FLOW, 4, &fi->fib_nh[0].nh_tclassid);
#endif
}
#ifdef CONFIG_IP_ROUTE_MULTIPATH
if (fi->fib_nhs > 1) {
@ -992,6 +992,10 @@ fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
nhp->rtnh_ifindex = nh->nh_oif;
if (nh->nh_gw)
RTA_PUT(skb, RTA_GATEWAY, 4, &nh->nh_gw);
#ifdef CONFIG_NET_CLS_ROUTE
if (nh->nh_tclassid)
RTA_PUT(skb, RTA_FLOW, 4, &nh->nh_tclassid);
#endif
nhp->rtnh_len = skb->tail - (unsigned char*)nhp;
} endfor_nexthops(fi);
mp_head->rta_type = RTA_MULTIPATH;