path: root/net/core
diff options
authorDavid S. Miller <davem@davemloft.net>2011-06-24 15:25:00 -0700
committerDavid S. Miller <davem@davemloft.net>2011-07-01 17:30:43 -0700
commit957c665f37007de93ccbe45902a23143724170d0 (patch)
treed49f13d5b34ed1b1fc34828cbcd60afdbc9c4e5b /net/core
parent11d53b4990226247a950e2b1ccfa4cf93bfbc822 (diff)
ipv6: Don't put artificial limit on routing table size.
IPV6, unlike IPV4, doesn't have a routing cache. Routing table entries, as well as clones made in response to route lookup requests, all live in the same table. And all of these things are together collected in the destination cache table for ipv6. This means that routing table entries count against the garbage collection limits, even though such entries cannot ever be reclaimed and are added explicitly by the administrator (rather than being created in response to lookups). Therefore it makes no sense to count ipv6 routing table entries against the GC limits. Add a DST_NOCOUNT destination cache entry flag, and skip the counting if it is set. Use this flag bit in ipv6 when adding routing table entries. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
1 files changed, 4 insertions, 2 deletions
diff --git a/net/core/dst.c b/net/core/dst.c
index 9ccca038444f..6135f3671692 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -190,7 +190,8 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
dst->lastuse = jiffies;
dst->flags = flags;
dst->next = NULL;
- dst_entries_add(ops, 1);
+ if (!(flags & DST_NOCOUNT))
+ dst_entries_add(ops, 1);
return dst;
@@ -243,7 +244,8 @@ again:
- dst_entries_add(dst->ops, -1);
+ if (!(dst->flags & DST_NOCOUNT))
+ dst_entries_add(dst->ops, -1);
if (dst->ops->destroy)

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