pass mark to all SA lookups to prepare them for when we add code
to have them search.
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of using the hardcoded truncation for authentication
algorithms, use the truncation length specified on xfrm_state.
Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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>
Here's a revised version, based on Herbert's comments, of a fix for
the ipv4-inner, ipv6-outer interfamily ipsec beet mode. It fixes the
network header adjustment during interfamily, as well as makes sure
that we reserve enough room for the new ipv6 header if we might have
something else as the inner family. Also, the ipv4 pseudo header
construction was added.
Signed-off-by: Joakim Koskela <jookos@gmail.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
ESP does not account for the IV size when calling pskb_may_pull() to
ensure everything it accesses directly is within the linear part of a
potential fragment. This results in a BUG() being triggered when the
both the IPv4 and IPv6 ESP stack is fed with an skb where the first
fragment ends between the end of the esp header and the end of the IV.
This bug was found by Dirk Nehring <dnehring@gmx.net> .
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Al Viro spotted a bogus use of u64 on the input sequence number which
is big-endian. This patch fixes it by giving the input sequence number
its own member in the xfrm_skb_cb structure.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds support for combined mode algorithms with GCM being
the first algorithm supported.
Combined mode algorithms can be added through the xfrm_user interface
using the new algorithm payload type XFRMA_ALG_AEAD. Each algorithms
is identified by its name and the ICV length.
For the purposes of matching algorithms in xfrm_tmpl structures,
combined mode algorithms occupy the same name space as encryption
algorithms. This is in line with how they are negotiated using IKE.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch converts ESP to use the crypto_aead interface and in particular
the authenc algorithm. This lays the foundations for future support of
combined mode algorithms.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a number of new IPsec audit events to meet the auditing
requirements of RFC4303. This includes audit hooks for the following events:
* Could not find a valid SA [sections 2.1, 3.4.2]
. xfrm_audit_state_notfound()
. xfrm_audit_state_notfound_simple()
* Sequence number overflow [section 3.3.3]
. xfrm_audit_state_replay_overflow()
* Replayed packet [section 3.4.3]
. xfrm_audit_state_replay()
* Integrity check failure [sections 3.4.4.1, 3.4.4.2]
. xfrm_audit_state_icvfail()
While RFC4304 deals only with ESP most of the changes in this patch apply to
IPsec in general, i.e. both AH and ESP. The one case, integrity check
failure, where ESP specific code had to be modified the same was done to the
AH code for the sake of consistency.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch releases the lock on the state before calling
x->type->input. It also adds the lock to the spots where they're
currently needed.
Most of those places (all except mip6) are expected to disappear with
async crypto.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Similar to the moving out of the replay processing on the output, this
patch moves the integrity stat collectin from x->type->input into
xfrm_input.
This would eventually allow transforms such as AH/ESP to be lockless.
The error value EBADMSG (currently unused in the crypto layer) is used
to indicate a failed integrity check. In future this error can be
directly returned by the crypto layer once we switch to aead
algorithms.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
RFC4303 introduces dummy packets with a nexthdr value of 59
to implement traffic confidentiality. Such packets need to
be dropped silently and the payload may not be attempted to
be parsed as it consists of random chunk.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This fixes scatterlist corruptions added by
commit 68e3f5dd4d
[CRYPTO] users: Fix up scatterlist conversion errors
The issue is that the code calls sg_mark_end() which clobbers the
sg_page() pointer of the final scatterlist entry.
The first part fo the fix makes skb_to_sgvec() do __sg_mark_end().
After considering all skb_to_sgvec() call sites the most correct
solution is to call __sg_mark_end() in skb_to_sgvec() since that is
what all of the callers would end up doing anyways.
I suspect this might have fixed some problems in virtio_net which is
the sole non-crypto user of skb_to_sgvec().
Other similar sg_mark_end() cases were converted over to
__sg_mark_end() as well.
Arguably sg_mark_end() is a poorly named function because it doesn't
just "mark", it clears out the page pointer as a side effect, which is
what led to these bugs in the first place.
The one remaining plain sg_mark_end() call is in scsi_alloc_sgtable()
and arguably it could be converted to __sg_mark_end() if only so that
we can delete this confusing interface from linux/scatterlist.h
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the errors made in the users of the crypto layer during
the sg_init_table conversion. It also adds a few conversions that were
missing altogether.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the following compile errors in some configurations:
<-- snip -->
...
CC net/ipv4/esp4.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/net/ipv4/esp4.c: In function 'esp_output':
/home/bunk/linux/kernel-2.6/git/linux-2.6/net/ipv4/esp4.c:113: error: implicit declaration of function 'sg_init_table'
make[3]: *** [net/ipv4/esp4.o] Error 1
...
/home/bunk/linux/kernel-2.6/git/linux-2.6/net/ipv6/esp6.c: In function 'esp6_output':
/home/bunk/linux/kernel-2.6/git/linux-2.6/net/ipv6/esp6.c:112: error: implicit declaration of function 'sg_init_table'
make[3]: *** [net/ipv6/esp6.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Combining RO and AH/ESP/IPCOMP does not make sense. So this patch adds a
check in the state initialisation function to prevent this.
This allows us to safely remove the mode input function of RO since it
can never be called anymore. Indeed, if somehow it does get called we'll
know about it through an OOPS instead of it slipping past silently.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jamal Hadi Salim
Martin Willi
Alexey Dobriyan
Brian Haley
Harvey Harrison
Joakim Koskela
Thomas Graf
Herbert Xu
Eric Dumazet
Paul Moore
David S. Miller
Adrian Bunk
Masahide NAKAMURA