linux-toradex.git/net/ipv6/output_core.c, branch v4.1 Linux kernel for Apalis and Colibri modules udp_tunnel: Pass UDP socket down through udp_tunnel{, 6}_xmit_skb(). 2015-04-07T19:29:08+00:00 David Miller davem@davemloft.net 2015-04-06T02:19:09+00:00 79b16aadea32cce077acbe9e229fcb58a7801687 That was we can make sure the output path of ipv4/ipv6 operate on the UDP socket rather than whatever random thing happens to be in skb->sk. Based upon a patch by Jiri Pirko. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> 
That was we can make sure the output path of ipv4/ipv6 operate on
the UDP socket rather than whatever random thing happens to be in
skb->sk.

Based upon a patch by Jiri Pirko.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
netfilter: Pass socket pointer down through okfn(). 2015-04-07T19:25:55+00:00 David Miller davem@davemloft.net 2015-04-06T02:19:04+00:00 7026b1ddb6b8d4e6ee33dc2bd06c0ca8746fa7ab On the output paths in particular, we have to sometimes deal with two socket contexts. First, and usually skb->sk, is the local socket that generated the frame. And second, is potentially the socket used to control a tunneling socket, such as one the encapsulates using UDP. We do not want to disassociate skb->sk when encapsulating in order to fix this, because that would break socket memory accounting. The most extreme case where this can cause huge problems is an AF_PACKET socket transmitting over a vxlan device. We hit code paths doing checks that assume they are dealing with an ipv4 socket, but are actually operating upon the AF_PACKET one. Signed-off-by: David S. Miller <davem@davemloft.net> 
On the output paths in particular, we have to sometimes deal with two
socket contexts.  First, and usually skb->sk, is the local socket that
generated the frame.

And second, is potentially the socket used to control a tunneling
socket, such as one the encapsulates using UDP.

We do not want to disassociate skb->sk when encapsulating in order
to fix this, because that would break socket memory accounting.

The most extreme case where this can cause huge problems is an
AF_PACKET socket transmitting over a vxlan device.  We hit code
paths doing checks that assume they are dealing with an ipv4
socket, but are actually operating upon the AF_PACKET one.

Signed-off-by: David S. Miller <davem@davemloft.net>
ipv6: hash net ptr into fragmentation bucket selection 2015-03-25T18:07:04+00:00 Hannes Frederic Sowa hannes@stressinduktion.org 2015-03-25T16:07:45+00:00 5a352dd0a3aac03b443c94828dfd7144261c8636 As namespaces are sometimes used with overlapping ip address ranges, we should also use the namespace as input to the hash to select the ip fragmentation counter bucket. Cc: Eric Dumazet <edumazet@google.com> Cc: Flavio Leitner <fbl@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
As namespaces are sometimes used with overlapping ip address ranges,
we should also use the namespace as input to the hash to select the ip
fragmentation counter bucket.

Cc: Eric Dumazet <edumazet@google.com>
Cc: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
ipv6: Make __ipv6_select_ident static 2015-02-09T22:21:03+00:00 Vlad Yasevich vyasevich@gmail.com 2015-02-09T14:38:21+00:00 8381eacf5c3b35cf7755f4bc521c4d56d24c1cd9 Make __ipv6_select_ident() static as it isn't used outside the file. Fixes: 0508c07f5e0c9 (ipv6: Select fragment id during UFO segmentation if not set.) Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Make __ipv6_select_ident() static as it isn't used outside
the file.

Fixes: 0508c07f5e0c9 (ipv6: Select fragment id during UFO segmentation if not set.)
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ipv6: Fix fragment id assignment on LE arches. 2015-02-09T22:21:03+00:00 Vlad Yasevich vyasevich@gmail.com 2015-02-09T14:38:20+00:00 51f30770e50eb787200f30a79105e2615b379334 Recent commit: 0508c07f5e0c94f38afd5434e8b2a55b84553077 Author: Vlad Yasevich <vyasevich@gmail.com> Date: Tue Feb 3 16:36:15 2015 -0500 ipv6: Select fragment id during UFO segmentation if not set. Introduced a bug on LE in how ipv6 fragment id is assigned. This was cought by nightly sparce check: Resolve the following sparce error: net/ipv6/output_core.c:57:38: sparse: incorrect type in assignment (different base types) net/ipv6/output_core.c:57:38: expected restricted __be32 [usertype] ip6_frag_id net/ipv6/output_core.c:57:38: got unsigned int [unsigned] [assigned] [usertype] id Fixes: 0508c07f5e0c9 (ipv6: Select fragment id during UFO segmentation if not set.) Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Recent commit:
0508c07f5e0c94f38afd5434e8b2a55b84553077
Author: Vlad Yasevich <vyasevich@gmail.com>
Date:   Tue Feb 3 16:36:15 2015 -0500

    ipv6: Select fragment id during UFO segmentation if not set.

Introduced a bug on LE in how ipv6 fragment id is assigned.
This was cought by nightly sparce check:

Resolve the following sparce error:
 net/ipv6/output_core.c:57:38: sparse: incorrect type in assignment
 (different base types)
   net/ipv6/output_core.c:57:38:    expected restricted __be32
[usertype] ip6_frag_id
   net/ipv6/output_core.c:57:38:    got unsigned int [unsigned]
[assigned] [usertype] id

Fixes: 0508c07f5e0c9 (ipv6: Select fragment id during UFO segmentation if not set.)
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ipv6: Select fragment id during UFO segmentation if not set. 2015-02-04T07:06:43+00:00 Vlad Yasevich vyasevich@gmail.com 2015-02-03T21:36:15+00:00 0508c07f5e0c94f38afd5434e8b2a55b84553077 If the IPv6 fragment id has not been set and we perform fragmentation due to UFO, select a new fragment id. We now consider a fragment id of 0 as unset and if id selection process returns 0 (after all the pertrubations), we set it to 0x80000000, thus giving us ample space not to create collisions with the next packet we may have to fragment. When doing UFO integrity checking, we also select the fragment id if it has not be set yet. This is stored into the skb_shinfo() thus allowing UFO to function correclty. This patch also removes duplicate fragment id generation code and moves ipv6_select_ident() into the header as it may be used during GSO. Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
If the IPv6 fragment id has not been set and we perform
fragmentation due to UFO, select a new fragment id.
We now consider a fragment id of 0 as unset and if id selection
process returns 0 (after all the pertrubations), we set it to
0x80000000, thus giving us ample space not to create collisions
with the next packet we may have to fragment.

When doing UFO integrity checking, we also select the
fragment id if it has not be set yet.   This is stored into
the skb_shinfo() thus allowing UFO to function correclty.

This patch also removes duplicate fragment id generation code
and moves ipv6_select_ident() into the header as it may be
used during GSO.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets 2014-10-31T00:01:18+00:00 Ben Hutchings ben@decadent.org.uk 2014-10-30T18:27:17+00:00 5188cd44c55db3e92cd9e77a40b5baa7ed4340f7 UFO is now disabled on all drivers that work with virtio net headers, but userland may try to send UFO/IPv6 packets anyway. Instead of sending with ID=0, we should select identifiers on their behalf (as we used to). Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Fixes: 916e4cf46d02 ("ipv6: reuse ip6_frag_id from ip6_ufo_append_data") Signed-off-by: David S. Miller <davem@davemloft.net> 
UFO is now disabled on all drivers that work with virtio net headers,
but userland may try to send UFO/IPv6 packets anyway.  Instead of
sending with ID=0, we should select identifiers on their behalf (as we
used to).

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Fixes: 916e4cf46d02 ("ipv6: reuse ip6_frag_id from ip6_ufo_append_data")
Signed-off-by: David S. Miller <davem@davemloft.net>
ipv6: White-space cleansing : Line Layouts 2014-08-25T05:37:52+00:00 Ian Morris ipm@chirality.org.uk 2014-08-24T20:53:10+00:00 67ba4152e8b77eada6a9c64e3c2c84d6112794fc This patch makes no changes to the logic of the code but simply addresses coding style issues as detected by checkpatch. Both objdump and diff -w show no differences. A number of items are addressed in this patch: * Multiple spaces converted to tabs * Spaces before tabs removed. * Spaces in pointer typing cleansed (char *)foo etc. * Remove space after sizeof * Ensure spacing around comparators such as if statements. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> 
This patch makes no changes to the logic of the code but simply addresses
coding style issues as detected by checkpatch.

Both objdump and diff -w show no differences.

A number of items are addressed in this patch:
* Multiple spaces converted to tabs
* Spaces before tabs removed.
* Spaces in pointer typing cleansed (char *)foo etc.
* Remove space after sizeof
* Ensure spacing around comparators such as if statements.

Signed-off-by: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-06-11T23:02:55+00:00 David S. Miller davem@davemloft.net 2014-06-11T23:02:55+00:00 902455e00720018d1dbd38327c3fd5bda6d844ee Conflicts: net/core/rtnetlink.c net/core/skbuff.c Both conflicts were very simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net> 
Conflicts:
	net/core/rtnetlink.c
	net/core/skbuff.c

Both conflicts were very simple overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipv6: Fixed up ipsec packet be re-routing issue 2014-06-11T07:47:31+00:00 huizhang huizhang@marvell.com 2014-06-09T04:37:25+00:00 f6c20c596f41fe6331cee2053b270bf12142b04e Bug report on https://bugzilla.kernel.org/show_bug.cgi?id=75781 When a local output ipsec packet match the mangle table rule, and be set mark value, the packet will be route again in route_me_harder -> _session_decoder6 In this case, the nhoff in CB of skb was still the default value 0. So the protocal match can't success and the packet can't match correct SA rule,and then the packet be send out in plaintext. To fixed up the issue. The CB->nhoff must be set. Signed-off-by: Hui Zhang <huizhang@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Bug report on https://bugzilla.kernel.org/show_bug.cgi?id=75781

When a local output ipsec packet match the mangle table rule,
and be set mark value, the packet will be route again in
route_me_harder -> _session_decoder6

In this case, the nhoff in CB of skb was still the default
value 0. So the protocal match can't success and the packet can't match
correct SA rule,and then the packet be send out in plaintext.

To fixed up the issue. The CB->nhoff must be set.

Signed-off-by: Hui Zhang <huizhang@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>