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  1. 26 6月, 2012 11 次提交
  3. 25 6月, 2012 20 次提交
  5. 24 6月, 2012 1 次提交
  7. 23 6月, 2012 6 次提交
    • A
      batman-adv: fix race condition in TT full-table replacement · 8b8e4bc0
      由 Antonio Quartulli 提交于 
      bug introduced with cea194d90b11aff7fc289149e4c7f305fad3535a

In the current TT code, when a TT_Response containing a full table is received
from an originator, first the node purges all the clients for that originator in
the global translation-table and then merges the newly received table.
During the purging phase each client deletion is done by means of a call_rcu()
invocation and at the end of this phase the global entry counter for that
originator is set to 0. However the invoked rcu function decreases the global
entry counter for that originator by one too and since the rcu invocation is
likely to be postponed, the node will end up in first setting the counter to 0
and then decreasing it one by one for each deleted client.

This bug leads to having a wrong global entry counter for the related node, say
X. Then when the node with the broken counter will answer to a TT_REQUEST on
behalf of node X, it will create faulty TT_RESPONSE that will generate an
unrecoverable situation on the node that asked for the full table recover.

The non-recoverability is given by the fact that the node with the broken
counter will keep answering on behalf of X because its knowledge about X's state
(ttvn + tt_crc) is correct.

To solve this problem the counter is not explicitly set to 0 anymore and the
counter decrement is performed right before the invocation of call_rcu().
Signed-off-by: NAntonio Quartulli <ordex@autistici.org>
      8b8e4bc0
    • M
      batman-adv: only drop packets of known wifi clients · 5870adc6
      由 Marek Lindner 提交于 
      bug introduced with 59b699cd

If the source or destination mac address of an ethernet packet
could not be found in the translation table the packet was
dropped if AP isolation was turned on. This behavior would
make it impossible to send broadcast packets over the mesh as
the broadcast address will never enter the translation table.
Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de>
Acked-by: NAntonio Quartulli <ordex@autistici.org>
      5870adc6
    • E
      ipv4: tcp: dont cache output dst for syncookies · 7586eceb
      由 Eric Dumazet 提交于 
      Don't cache output dst for syncookies, as this adds pressure on IP route
cache and rcu subsystem for no gain.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: NJesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      7586eceb
    • P
      netfilter: ctnetlink: fix compilation with NF_CONNTRACK_EVENTS=n · 8e36c4b5
      由 Pablo Neira Ayuso 提交于 
      This patch fixes compilation with NF_CONNTRACK_EVENTS=n and
NETFILTER_NETLINK_QUEUE_CT=y.

I'm leaving all those static inline functions that calculate the size
of the event message out of the ifdef area of NF_CONNTRACK_EVENTS since
they will not be included by gcc in case they are unused.
Reported-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      8e36c4b5
    • P
      netfilter: nfnetlink_queue: fix sparse warning due to missing include · ab5e8b77
      由 Pablo Neira Ayuso 提交于 
      This patch fixes a sparse warning due to missing include header file.
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      ab5e8b77
    • A
      ipv4: Add sysctl knob to control early socket demux · 6648bd7e
      由 Alexander Duyck 提交于 
      This change is meant to add a control for disabling early socket demux.
The main motivation behind this patch is to provide an option to disable
the feature as it adds an additional cost to routing that reduces overall
throughput by up to 5%.  For example one of my systems went from 12.1Mpps
to 11.6 after the early socket demux was added.  It looks like the reason
for the regression is that we are now having to perform two lookups, first
the one for an established socket, and then the one for the routing table.

By adding this patch and toggling the value for ip_early_demux to 0 I am
able to get back to the 12.1Mpps I was previously seeing.

[ Move local variables in ip_rcv_finish() down into the basic
  block in which they are actually used.  -DaveM ]
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6648bd7e
  9. 22 6月, 2012 2 次提交