fix things up. Noted by Jeff Garzik.

ttl of tcp_socket.

- ETHTOOL_GLINK handling forgets to return on success

- Make use of pci_unmap_xxx storage optimization.
- In tg3_get_invariants, fix cacheline_sz_reg shifts.
  On 5703 chips, if latency timer is less than 64, set
  it to 64.
- In tg3_test_dma, only run the actual test on 5700/5701
  chips.  Aparently 5702/5703 revs have some problems.

- support for multiple expected connections
  (necessary for protocols like H.323, SIP, PPTP)
- helper-definable limit of unconfirmed expectations
- timeouts for expectations
- full graph of connection relations, even after expectation confirmed
- various changes in the API towards conntrack and NAT helper
- automatic conntrack helper loading when at helper is loaded
- NAT mangling of TCP SACK in case of sequence number alteration
  (no need to delete SACKPERM anymore, I hope Alexey is happy now)

Based upon a patch from Maxim Krasnyansky.

We have not been bumping this since we create openreqs in TCP,
ie. some 6 years ago. :-)

assumes that it cannot be reached in the crossed SYN case.
This is wrong if the original SYNs came from a malicious packet
generator third party.  This can result in a 4 minute ACK
fight if the sequence numbers are correct.

The fix is the verify the ACK before we do anything else, which
should cover all cases.

This bug was discovered by Casper Dik.

use the most uptodate value of ip_default_ttl sysctl.

respective config option for CONFIG_IP_NF_NAT_LOCAL

Based upon a patch from Denis Vlasenko.

in UDP case.  I note in passing that the TCP case is
wrong because TCP does not use sock_writeable()s

splitup.

splitup.

during connect when the connection will still have a unique
identity.  Fixes port space exhaustion, especially in web
caches.

Initial work done by Andi Kleen.

It is used to differentiate the devices by the medium
they are attached to.  It is used to change proxy_arp behavior:
the proxy arp feature is enabled for packets forwarded between
two devices attached to different media.

being dumped.

- Fix open_request lookup bug that was already fixed in ipv4

- Answer to neighbour solicitations on SIT, otherwise
  freebsd does not want to talk to us.
- Fix wrong structure nd_msg and... use it :-)

- stop external DoS attack feeding lots of IPv6 prefixes

- respect multicast interface when connecting

1) Two bugs noticed by Pasi:
   - Wrong rtt update interval
   - Forgot to clear retrans_stamp when entering established
     state
2) Missing LAST_ACK case of processing segment text (step 7) in
   tcp_rcv_state_process.
3) Remove "final cut" code, purism is good not all the times. :-)

complete memory corruption.

- no need to check for pskb_may_pull() in ip_local_deliver_finish, header
is guaranteed to be at right place here.
- remove cleaing ip_summed with IP options, it was required due to
broken eth_copy_and_csum, but we do not use it any more
and it happens to break loopback

- do not make path mtu discovery, when it is disabled :-)

pskb_pull really may reallocate packet after the check
for 8 bytes was removed from ip_input, so set icmp
header pointer after pskb_pull call not before.

- fix device leakage in multipath
- fix oops due to race by adding spinlock

In __pskb_pull_tail, pskb_expand_head return value test
was inverted.

large time intervals.

from IPv4 sysctl documentation.

Add destroy callback to ip_conntrack_helper, to be used by L4
protocol trackers.