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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-22 11:57:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-22 11:57:09 -0700
commit5165aece0efac6574fc3e32b6f1c2a964820d1c6 (patch)
tree73131c06a021578a47526a95bad391dbd9d3b932 /net/ipv4
parente38be994b9cad09b0d8d78a1875d7e8a2e115d29 (diff)
parentf6b24caaf933a466397915a08e30e885a32f905a (diff)
downloadlinux-5165aece0efac6574fc3e32b6f1c2a964820d1c6.tar.bz2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (43 commits) via-velocity: Fix velocity driver unmapping incorrect size. mlx4_en: Remove redundant refill code on RX mlx4_en: Removed redundant check on lso header size mlx4_en: Cancel port_up check in transmit function mlx4_en: using stop/start_all_queues mlx4_en: Removed redundant skb->len check mlx4_en: Counting all the dropped packets on the TX side usbnet cdc_subset: fix issues talking to PXA gadgets Net: qla3xxx, remove sleeping in atomic ipv4: fix NULL pointer + success return in route lookup path isdn: clean up documentation index cfg80211: validate station settings cfg80211: allow setting station parameters in mesh cfg80211: allow adding/deleting stations on mesh ath5k: fix beacon_int handling MAINTAINERS: Fix Atheros pattern paths ath9k: restore PS mode, before we put the chip into FULL SLEEP state. ath9k: wait for beacon frame along with CAB acer-wmi: fix rfkill conversion ath5k: avoid PCI FATAL interrupts by restoring RETRY_TIMEOUT disabling ...
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/route.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index cd76b3cb7092..65b3a8b11a6c 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1085,8 +1085,16 @@ restart:
now = jiffies;
if (!rt_caching(dev_net(rt->u.dst.dev))) {
- rt_drop(rt);
- return 0;
+ /*
+ * If we're not caching, just tell the caller we
+ * were successful and don't touch the route. The
+ * caller hold the sole reference to the cache entry, and
+ * it will be released when the caller is done with it.
+ * If we drop it here, the callers have no way to resolve routes
+ * when we're not caching. Instead, just point *rp at rt, so
+ * the caller gets a single use out of the route
+ */
+ goto report_and_exit;
}
rthp = &rt_hash_table[hash].chain;
@@ -1217,6 +1225,8 @@ restart:
rcu_assign_pointer(rt_hash_table[hash].chain, rt);
spin_unlock_bh(rt_hash_lock_addr(hash));
+
+report_and_exit:
if (rp)
*rp = rt;
else