Commit Graph

1890 Commits

Author SHA1 Message Date
Brian Haley
a1ed05263b IPv6: preferred lifetime of address not getting updated
There's a bug in addrconf_prefix_rcv() where it won't update the
preferred lifetime of an IPv6 address if the current valid lifetime
of the address is less than 2 hours (the minimum value in the RA).

For example, If I send a router advertisement with a prefix that
has valid lifetime = preferred lifetime = 2 hours we'll build
this address:

3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
    inet6 2001:1890:1109:a20:217:8ff:fe7d:4718/64 scope global dynamic
       valid_lft 7175sec preferred_lft 7175sec

If I then send the same prefix with valid lifetime = preferred
lifetime = 0 it will be ignored since the minimum valid lifetime
is 2 hours:

3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
    inet6 2001:1890:1109:a20:217:8ff:fe7d:4718/64 scope global dynamic
       valid_lft 7161sec preferred_lft 7161sec

But according to RFC 4862 we should always reset the preferred lifetime
even if the valid lifetime is invalid, which would cause the address
to immediately get deprecated.  So with this patch we'd see this:

5: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
    inet6 2001:1890:1109:a20:21f:29ff:fe5a:ef04/64 scope global deprecated dynamic
       valid_lft 7163sec preferred_lft 0sec

The comment winds-up being 5x the size of the code to fix the problem.

Update the preferred lifetime of IPv6 addresses derived from a prefix
info option in a router advertisement even if the valid lifetime in
the option is invalid, as specified in RFC 4862 Section 5.5.3e.  Fixes
an issue where an address will not immediately become deprecated.
Reported by Jens Rosenboom.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-03 19:10:13 -07:00
Wei Yongjun
59cae0092e xfrm6: fix the proto and ports decode of sctp protocol
The SCTP pushed the skb above the sctp chunk header, so the
check of pskb_may_pull(skb, nh + offset + 1 - skb->data) in
_decode_session6() will never return 0 and the ports decode
of sctp will always fail. (nh + offset + 1 - skb->data < 0)

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-03 19:10:10 -07:00
Herbert Xu
71f9dacd2e inet: Call skb_orphan before tproxy activates
As transparent proxying looks up the socket early and assigns
it to the skb for later processing, we must drop any existing
socket ownership prior to that in order to distinguish between
the case where tproxy is active and where it is not.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-26 19:22:37 -07:00
Jesper Dangaard Brouer
1f2ccd00f2 ipv6: Use rcu_barrier() on module unload.
The ipv6 module uses rcu_call() thus it should use rcu_barrier() on
module unload.

Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-26 13:51:31 -07:00
Jens Rosenboom
a1faa69810 ipv6: avoid wraparound for expired preferred lifetime
Avoid showing wrong high values when the preferred lifetime of an address
is expired.

Signed-off-by: Jens Rosenboom <me@jayr.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-25 20:03:50 -07:00
Brian Haley
d5fdd6babc ipv6: Use correct data types for ICMPv6 type and code
Change all the code that deals directly with ICMPv6 type and code
values to use u8 instead of a signed int as that's the actual data
type.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-23 04:31:07 -07:00
Eric Dumazet
31e6d363ab net: correct off-by-one write allocations reports
commit 2b85a34e91
(net: No more expensive sock_hold()/sock_put() on each tx)
changed initial sk_wmem_alloc value.

We need to take into account this offset when reporting
sk_wmem_alloc to user, in PROC_FS files or various
ioctls (SIOCOUTQ/TIOCOUTQ)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-18 00:29:12 -07:00
David S. Miller
9cbc1cb8cd Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
	Documentation/feature-removal-schedule.txt
	drivers/scsi/fcoe/fcoe.c
	net/core/drop_monitor.c
	net/core/net-traces.c
2009-06-15 03:02:23 -07:00
Tom Goff
403dbb97f6 PIM-SM: namespace changes
IPv4:
  - make PIM register vifs netns local
  - set the netns when a PIM register vif is created
  - make PIM available in all network namespaces (if CONFIG_IP_PIMSM_V2)
    by adding the protocol handler when multicast routing is initialized

IPv6:
  - make PIM register vifs netns local
  - make PIM available in all network namespaces (if CONFIG_IPV6_PIMSM_V2)
    by adding the protocol handler when multicast routing is initialized

Signed-off-by: Tom Goff <thomas.goff@boeing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-14 03:16:13 -07:00
Masatake YAMATO
590a9887a2 trivial: Fix a typo in comment of addrconf_dad_start()
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-06-12 18:01:51 +02:00
Pavel Machek
4737f0978d trivial: Kconfig: .ko is normally not included in module names
.ko is normally not included in Kconfig help, make it consistent.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-06-12 18:01:50 +02:00
Patrick McHardy
36432dae73 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-11 16:00:49 +02:00
Eric Dumazet
2b85a34e91 net: No more expensive sock_hold()/sock_put() on each tx
One of the problem with sock memory accounting is it uses
a pair of sock_hold()/sock_put() for each transmitted packet.

This slows down bidirectional flows because the receive path
also needs to take a refcount on socket and might use a different
cpu than transmit path or transmit completion path. So these
two atomic operations also trigger cache line bounces.

We can see this in tx or tx/rx workloads (media gateways for example),
where sock_wfree() can be in top five functions in profiles.

We use this sock_hold()/sock_put() so that sock freeing
is delayed until all tx packets are completed.

As we also update sk_wmem_alloc, we could offset sk_wmem_alloc
by one unit at init time, until sk_free() is called.
Once sk_free() is called, we atomic_dec_and_test(sk_wmem_alloc)
to decrement initial offset and atomicaly check if any packets
are in flight.

skb_set_owner_w() doesnt call sock_hold() anymore

sock_wfree() doesnt call sock_put() anymore, but check if sk_wmem_alloc
reached 0 to perform the final freeing.

Drawback is that a skb->truesize error could lead to unfreeable sockets, or
even worse, prematurely calling __sk_free() on a live socket.

Nice speedups on SMP. tbench for example, going from 2691 MB/s to 2711 MB/s
on my 8 cpu dev machine, even if tbench was not really hitting sk_refcnt
contention point. 5 % speedup on a UDP transmit workload (depends
on number of flows), lowering TX completion cpu usage.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11 02:55:43 -07:00
David S. Miller
343a99724e netfilter: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:23:58 -07:00
David S. Miller
4d9092bb41 ipv6: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:20:05 -07:00
Jan Kasprzak
f87fb666bb netfilter: nf_ct_icmp: keep the ICMP ct entries longer
Current conntrack code kills the ICMP conntrack entry as soon as
the first reply is received. This is incorrect, as we then see only
the first ICMP echo reply out of several possible duplicates as
ESTABLISHED, while the rest will be INVALID. Also this unnecessarily
increases the conntrackd traffic on H-A firewalls.

Make all the ICMP conntrack entries (including the replied ones)
last for the default of nf_conntrack_icmp{,v6}_timeout seconds.

Signed-off-by: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-08 15:53:43 +02:00
Evgeniy Polyakov
a5e7882096 netfilter: x_tables: added hook number into match extension parameter structure.
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-04 16:54:42 +02:00
Eric Dumazet
adf30907d6 net: skb->dst accessors
Define three accessors to get/set dst attached to a skb

struct dst_entry *skb_dst(const struct sk_buff *skb)

void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)

void skb_dst_drop(struct sk_buff *skb)
This one should replace occurrences of :
dst_release(skb->dst)
skb->dst = NULL;

Delete skb->dst field

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-03 02:51:04 -07:00
Pablo Neira Ayuso
17e6e4eac0 netfilter: conntrack: simplify event caching system
This patch simplifies the conntrack event caching system by removing
several events:

 * IPCT_[*]_VOLATILE, IPCT_HELPINFO and IPCT_NATINFO has been deleted
   since the have no clients.
 * IPCT_COUNTER_FILLING which is a leftover of the 32-bits counter
   days.
 * IPCT_REFRESH which is not of any use since we always include the
   timeout in the messages.

After this patch, the existing events are:

 * IPCT_NEW, IPCT_RELATED and IPCT_DESTROY, that are used to identify
 addition and deletion of entries.
 * IPCT_STATUS, that notes that the status bits have changes,
 eg. IPS_SEEN_REPLY and IPS_ASSURED.
 * IPCT_PROTOINFO, that reports that internal protocol information has
 changed, eg. the TCP, DCCP and SCTP protocol state.
 * IPCT_HELPER, that a helper has been assigned or unassigned to this
 entry.
 * IPCT_MARK and IPCT_SECMARK, that reports that the mark has changed, this
 covers the case when a mark is set to zero.
 * IPCT_NATSEQADJ, to report that there's updates in the NAT sequence
 adjustment.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2009-06-02 20:08:46 +02:00
Patrick McHardy
8cc848fa34 Merge branch 'master' of git://dev.medozas.de/linux 2009-06-02 13:44:56 +02:00
Brian Haley
dae9de8e13 IPv6: Print error value when skb allocation fails
Print-out the error value when sock_alloc_send_skb() fails in
the IPv6 neighbor discovery code - can be useful for debugging.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-02 00:20:26 -07:00
Brian Haley
56d417b12e IPv6: Add 'autoconf' and 'disable_ipv6' module parameters
Add 'autoconf' and 'disable_ipv6' parameters to the IPv6 module.

The first controls if IPv6 addresses are autoconfigured from
prefixes received in Router Advertisements.  The IPv6 loopback
(::1) and link-local addresses are still configured.

The second controls if IPv6 addresses are desired at all.  No
IPv6 addresses will be added to any interfaces.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-01 03:07:33 -07:00
Herbert Xu
a5b1cf288d gro: Avoid unnecessary comparison after skb_gro_header
For the overwhelming majority of cases, skb_gro_header's return
value cannot be NULL.  Yet we must check it because of its current
form.  This patch splits it up into multiple functions in order
to avoid this.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-27 03:26:01 -07:00
David S. Miller
c649c0e31d Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/wireless/ath/ath5k/phy.c
	drivers/net/wireless/iwlwifi/iwl-agn.c
	drivers/net/wireless/iwlwifi/iwl3945-base.c
2009-05-25 01:42:21 -07:00
Herbert Xu
3699067381 tcp: Unexport TCPv6 GRO functions
Sinec the TCPv6 GRO functions are used in the same file where
they are defined, we do not need to export them.  This was a
cut-n-paste from the IPv4 code which does need to export them.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 00:45:28 -07:00
Jean-Mickael Guerin
4f72427998 IPv6: set RTPROT_KERNEL to initial route
The use of unspecified protocol in IPv6 initial route prevents quagga to
install IPv6 default route:
# show ipv6 route
S   ::/0 [1/0] via fe80::1, eth1_0
K>* ::/0 is directly connected, lo, rej
C>* ::1/128 is directly connected, lo
C>* fe80::/64 is directly connected, eth1_0

# ip -6 route
fe80::/64 dev eth1_0  proto kernel  metric 256  mtu 1500 advmss 1440
hoplimit -1
ff00::/8 dev eth1_0  metric 256  mtu 1500 advmss 1440 hoplimit -1
unreachable default dev lo  proto none  metric -1  error -101 hoplimit 255

The attached patch ensures RTPROT_KERNEL to the default initial route
and fixes the problem for quagga.
This is similar to "ipv6: protocol for address routes"
f410a1fba7.

# show ipv6 route
S>* ::/0 [1/0] via fe80::1, eth1_0
C>* ::1/128 is directly connected, lo
C>* fe80::/64 is directly connected, eth1_0

# ip -6 route
fe80::/64 dev eth1_0  proto kernel  metric 256  mtu 1500 advmss 1440
hoplimit -1
fe80::/64 dev eth1_0  proto kernel  metric 256  mtu 1500 advmss 1440
hoplimit -1
ff00::/8 dev eth1_0  metric 256  mtu 1500 advmss 1440 hoplimit -1
default via fe80::1 dev eth1_0  proto zebra  metric 1024  mtu 1500
advmss 1440 hoplimit -1
unreachable default dev lo  proto kernel  metric -1  error -101 hoplimit 255

Signed-off-by: Jean-Mickael Guerin <jean-mickael.guerin@6wind.com>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-20 17:38:59 -07:00
Rami Rosen
04af8cf6f3 net: Remove unused parameter from fill method in fib_rules_ops.
The netlink message header (struct nlmsghdr) is an unused parameter in
fill method of fib_rules_ops struct.  This patch removes this
parameter from this method and fixes the places where this method is
called.

(include/net/fib_rules.h)

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-20 17:26:23 -07:00
Sascha Hlusiak
645069299a sit: stateless autoconf for isatap
be sent periodically. The rs_delay can be speficied when adding the
PRL entry and defaults to 15 minutes.

The RS is sent from every link local adress that's assigned to the
tunnel interface. It's directed to the (guessed) linklocal address
of the router and is sent through the tunnel.

Better: send to ff02::2 encapsuled in unicast directed to router-v4.

Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-19 16:02:02 -07:00
Sascha Hlusiak
9af28511be addrconf: refuse isatap eui64 for INADDR_ANY
A tunnel with no local ipv4 endpoint would otherwise use the
ISATAP linklocal address fe80::5efe:0:0, which is invalid. Rather not
add a linklocal address at all.

Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-19 16:02:02 -07:00
Sascha Hlusiak
4b27960174 sit: ipip6_tunnel_del_prl: return err
Typo. When deleting a PRL entry, return status to userspace
instead of success.

Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-19 16:02:01 -07:00
Sascha Hlusiak
4fddbf5d78 sit: strictly restrict incoming traffic to tunnel link device
Check link device when looking up a tunnel. When a tunnel is
linked to a interface, traffic from a different interface must not
reach the tunnel.

This also allows creating of multiple tunnels with the same
endpoints, if the link device differs.

Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-19 16:02:00 -07:00
Sascha Hlusiak
8db99e5717 sit: Fail to create tunnel, if it already exists
When locating the tunnel, do not continue if it is found. Otherwise
a different tunnel with similar configuration would be returned and
parts could be overwritten.

Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-19 16:02:00 -07:00
Eric W. Biederman
5007392d85 net: FIX ipv6_forward sysctl restart
Just returning -ERESTARTSYS without a signal pending is not
good that will just leak it to userspace.  We need return
-ERESTARTNOINTR so we always restart and set signal pending
so that we fall of the fast path of syscall return and setup
the system call restart.

So use restart_syscall() which does all of this for us.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-18 22:15:58 -07:00
Jiri Pirko
3a6d54c563 net: remove needless (now buggy) & from dev->dev_addr
Patch fixes issues with dev->dev_addr changing from array to pointer.
Hopefully there are no others.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 11:59:47 -07:00
Rami Rosen
8b3521eeb7 ipv4: remove an unused parameter from configure method of fib_rules_ops.
Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 11:59:45 -07:00
David S. Miller
22f6dacdfc Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	include/net/tcp.h
2009-05-08 02:48:30 -07:00
Jan Engelhardt
bb70dfa5f8 netfilter: xtables: consolidate comefrom debug cast access
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:49 +02:00
Jan Engelhardt
7a6b1c46e2 netfilter: xtables: remove another level of indent
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:49 +02:00
Jan Engelhardt
9452258d81 netfilter: xtables: remove some goto
Combining two ifs, and goto is easily gone.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:48 +02:00
Jan Engelhardt
a1ff4ac84e netfilter: xtables: reduce indent level by one
Cosmetic only. Transformation applied:

	-if (foo) { long block; } else { short block; }
	+if (!foo) { short block; continue; } long block;

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:48 +02:00
Jan Engelhardt
98e8640316 netfilter: xtables: consolidate open-coded logic
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:48 +02:00
Jan Engelhardt
4f2f6f236a netfilter: xtables: fix const inconsistency
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:47 +02:00
Jan Engelhardt
ccf5bd8c27 netfilter: xtables: remove redundant casts
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:47 +02:00
Jan Engelhardt
4ba351cf86 netfilter: xtables: use NFPROTO_ in standard targets
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:47 +02:00
Jan Engelhardt
4b1e27e99f netfilter: queue: use NFPROTO_ for queue callsites
af is an nfproto.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:46 +02:00
Jan Engelhardt
383ca5b874 netfilter: xtables: use NFPROTO_ for xt_proto_init callsites
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:46 +02:00
David S. Miller
356d6c2d55 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6 2009-05-05 12:00:53 -07:00
Christoph Paasch
b98b4947cb netfilter: ip6t_ipv6header: fix match on packets ending with NEXTHDR_NONE
As packets ending with NEXTHDR_NONE don't have a last extension header,
the check for the length needs to be after the check for NEXTHDR_NONE.

Signed-off-by: Christoph Paasch <christoph.paasch@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-05-05 15:32:16 +02:00
David S. Miller
aba7453037 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	Documentation/isdn/00-INDEX
	drivers/net/wireless/iwlwifi/iwl-scan.c
	drivers/net/wireless/rndis_wlan.c
	net/mac80211/main.c
2009-04-29 20:30:35 -07:00
Stephen Hemminger
942e4a2bd6 netfilter: revised locking for x_tables
The x_tables are organized with a table structure and a per-cpu copies
of the counters and rules. On older kernels there was a reader/writer 
lock per table which was a performance bottleneck. In 2.6.30-rc, this
was converted to use RCU and the counters/rules which solved the performance
problems for do_table but made replacing rules much slower because of
the necessary RCU grace period.

This version uses a per-cpu set of spinlocks and counters to allow to
table processing to proceed without the cache thrashing of a global
reader lock and keeps the same performance for table updates.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-28 22:36:33 -07:00