linux.git/net/ipv4, branch v3.2-rc5

ipv4: Fix peer validation on cached lookup.

2011-12-05T18:21:42+00:00

If ipv4_valdiate_peer() fails during a cached entry lookup,
we'll NULL derer since the loop iterator assumes rth is not
NULL.

Letting this be handled as a failure is just bogus, so just make it
not fail.  If we have trouble getting a non-NULL neighbour for the
redirected gateway, just restore the original gateway and continue.

The very next use of this cached route will try again.

Reported-by: Dan Carpenter 
Signed-off-by: David S. Miller

ipv4: make sure RTO_ONLINK is saved in routing cache

2011-12-03T06:32:23+00:00

__mkroute_output fails to work with the original tos
and uses value with stripped RTO_ONLINK bit. Make sure we put
the original TOS bits into rt_key_tos because it used to match
cached route.

Signed-off-by: Julian Anastasov 
Signed-off-by: David S. Miller

ipv4: flush route cache after change accept_local

2011-12-02T02:46:12+00:00

After reset ipv4_devconf->data[IPV4_DEVCONF_ACCEPT_LOCAL] to 0,
we should flush route cache, or it will continue receive packets with local
source address, which should be dropped.

Signed-off-by: Weiping Pan 
Signed-off-by: David S. Miller

Revert "udp: remove redundant variable"

2011-12-01T19:12:55+00:00

This reverts commit 81d54ec8479a2c695760da81f05b5a9fb2dbe40a.

If we take the "try_again" goto, due to a checksum error,
the 'len' has already been truncated.  So we won't compute
the same values as the original code did.

Reported-by: paul bilke 
Signed-off-by: David S. Miller

ipv4: Perform peer validation on cached route lookup.

2011-12-01T18:38:59+00:00

Otherwise we won't notice the peer GENID change.

Reported-by: Steffen Klassert 
Signed-off-by: David S. Miller

ipv4: fix lockdep splat in rt_cache_seq_show

2011-11-30T22:24:14+00:00

After commit f2c31e32b378 (fix NULL dereferences in check_peer_redir()),
dst_get_neighbour() should be guarded by rcu_read_lock() /
rcu_read_unlock() section.

Reported-by: Miles Lane 
Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

Merge branch 'nf' of git://1984.lsi.us.es/net

2011-11-29T06:20:55+00:00

inet: add a redirect generation id in inetpeer

2011-11-27T00:16:37+00:00

Now inetpeer is the place where we cache redirect information for ipv4
destinations, we must be able to invalidate informations when a route is
added/removed on host.

As inetpeer is not yet namespace aware, this patch adds a shared
redirect_genid, and a per inetpeer redirect_genid. This might be changed
later if inetpeer becomes ns aware.

Cache information for one inerpeer is valid as long as its
redirect_genid has the same value than global redirect_genid.

Reported-by: Arkadiusz Miśkiewicz 
Tested-by: Arkadiusz Miśkiewicz 
Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

ipv4: Don't use the cached pmtu informations for input routes

2011-11-26T19:29:52+00:00

The pmtu informations on the inetpeer are visible for output and
input routes. On packet forwarding, we might propagate a learned
pmtu to the sender. As we update the pmtu informations of the
inetpeer on demand, the original sender of the forwarded packets
might never notice when the pmtu to that inetpeer increases.
So use the mtu of the outgoing device on packet forwarding instead
of the pmtu to the final destination.

Signed-off-by: Steffen Klassert 
Signed-off-by: David S. Miller

net: Move mtu handling down to the protocol depended handlers

2011-11-26T19:29:51+00:00

We move all mtu handling from dst_mtu() down to the protocol
layer. So each protocol can implement the mtu handling in
a different manner.

Signed-off-by: Steffen Klassert 
Signed-off-by: David S. Miller