linux-stable.git/net/ipv4/inetpeer.c, branch linux-3.6.y

inetpeer: fix token initialization

2012-09-27T23:27:39+00:00

When jiffies wraps around (for example, 5 minutes after the boot, see
INITIAL_JIFFIES) and peer has just been created, now - peer->rate_last can be
< XRLIM_BURST_FACTOR * timeout, so token is not set to the maximum value, thus
some icmp packets can be unexpectedly dropped.

Fix this case by initializing last_rate to 60 seconds in the past.

Signed-off-by: Nicolas Dichtel 
Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

ipv4: Maintain redirect and PMTU info in struct rtable again.

2012-07-11T05:40:14+00:00

Maintaining this in the inetpeer entries was not the right way to do
this at all.

Signed-off-by: David S. Miller

tcp: Move timestamps from inetpeer to metrics cache.

2012-07-11T05:40:08+00:00

With help from Lin Ming.

Signed-off-by: David S. Miller

inetpeer: inetpeer_invalidate_tree() cleanup

2012-06-20T21:38:55+00:00

No need to use cmpxchg() in inetpeer_invalidate_tree() since we hold
base lock.

Also use correct rcu annotations to remove sparse errors
(CONFIG_SPARSE_RCU_POINTER=y)

net/ipv4/inetpeer.c:144:19: error: incompatible types in comparison
expression (different address spaces)
net/ipv4/inetpeer.c:149:20: error: incompatible types in comparison
expression (different address spaces)
net/ipv4/inetpeer.c:595:10: error: incompatible types in comparison
expression (different address spaces)

Signed-off-by: Eric Dumazet 
Cc: Steffen Klassert 
Signed-off-by: David S. Miller

inet: Add family scope inetpeer flushes.

2012-06-11T09:09:10+00:00

This implementation can deal with having many inetpeer roots, which is
a necessary prerequisite for per-FIB table rooted peer tables.

Each family (AF_INET, AF_INET6) has a sequence number which we bump
when we get a family invalidation request.

Each peer lookup cheaply checks whether the flush sequence of the
root we are using is out of date, and if so flushes it and updates
the sequence number.

Signed-off-by: David S. Miller

inet: Pass inetpeer root into inet_getpeer*() interfaces.

2012-06-10T02:12:36+00:00

Otherwise we reference potentially non-existing members when
ipv6 is disabled.

Signed-off-by: David S. Miller

inet: Consolidate inetpeer_invalidate_tree() interfaces.

2012-06-09T23:32:41+00:00

We only need one interface for this operation, since we always know
which inetpeer root we want to flush.

Signed-off-by: David S. Miller

inet: Initialize per-netns inetpeer roots in net/ipv{4,6}/route.c

2012-06-09T23:27:05+00:00

Instead of net/ipv4/inetpeer.c

Signed-off-by: David S. Miller

inetpeer: add namespace support for inetpeer

2012-06-08T21:27:23+00:00

now inetpeer doesn't support namespace,the information will
be leaking across namespace.

this patch move the global vars v4_peers and v6_peers to
netns_ipv4 and netns_ipv6 as a field peers.

add struct pernet_operations inetpeer_ops to initial pernet
inetpeer data.

and change family_to_base and inet_getpeer to support namespace.

Signed-off-by: Gao feng 
Signed-off-by: David S. Miller

inetpeer: fix a race in inetpeer_gc_worker()

2012-06-06T17:45:15+00:00

commit 5faa5df1fa2024 (inetpeer: Invalidate the inetpeer tree along with
the routing cache) added a race :

Before freeing an inetpeer, we must respect a RCU grace period, and make
sure no user will attempt to increase refcnt.

inetpeer_invalidate_tree() waits for a RCU grace period before inserting
inetpeer tree into gc_list and waking the worker. At that time, no
concurrent lookup can find a inetpeer in this tree.

Signed-off-by: Eric Dumazet 
Cc: Steffen Klassert 
Acked-by: Steffen Klassert 
Signed-off-by: David S. Miller