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* esp6: Use the IPsec protocol multiplexer APISteffen Klassert2014-03-14
| | | | | | Switch esp6 to use the new IPsec protocol multiplexer. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
* ipv4/ipv6: Fix FSF address in file headersJeff Kirsher2013-12-06
| | | | | | | | | | | | | | Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> CC: James Morris <jmorris@namei.org> CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> CC: Patrick McHardy <kaber@trash.net> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2013-11-02
|\ | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Conflicts: net/xfrm/xfrm_policy.c Minor merge conflict in xfrm_policy.c, consisting of overlapping changes which were trivial to resolve. Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: esp{4,6}: get rid of struct esp_dataMathias Krause2013-10-29
| | | | | | | | | | | | | | | | | | | | | | | | struct esp_data consists of a single pointer, vanishing the need for it to be a structure. Fold the pointer into 'data' direcly, removing one level of pointer indirection. Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
| * net: esp{4,6}: remove padlen from struct esp_dataMathias Krause2013-10-29
| | | | | | | | | | | | | | | | | | | | The padlen member of struct esp_data is always zero. Get rid of it. Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
* | ipsec: Don't update the pmtu on ICMPV6_DEST_UNREACHSteffen Klassert2013-09-16
|/ | | | | | | | | | | Currently we update the pmtu in the IPsec protocol error handlers if icmpv6 message type is either ICMPV6_DEST_UNREACH or ICMPV6_PKT_TOOBIG. Updating the pmtu on ICMPV6_DEST_UNREACH is wrong in any case, it causes strangely fragmented packets. Only ICMPV6_PKT_TOOBIG signalizes pmtu discovery, so remove the ICMPV6_DEST_UNREACH check in the IPsec protocol error handlers. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
* ipv6:introduce function to find route for redirectDuan Jiong2013-09-05
| | | | | | | | | | | | | | | | | | | | | | | | | RFC 4861 says that the IP source address of the Redirect is the same as the current first-hop router for the specified ICMP Destination Address, so the gateway should be taken into consideration when we find the route for redirect. There was once a check in commit a6279458c534d01ccc39498aba61c93083ee0372 ("NDISC: Search over all possible rules on receipt of redirect.") and the check went away in commit b94f1c0904da9b8bf031667afc48080ba7c3e8c9 ("ipv6: Use icmpv6_notify() to propagate redirect, instead of rt6_redirect()"). The bug is only "exploitable" on layer-2 because the source address of the redirect is checked to be a valid link-local address but it makes spoofing a lot easier in the same L2 domain nonetheless. Thanks very much for Hannes's help. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: esp{4,6}: fix potential MTU calculation overflowsDaniel Borkmann2013-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | Commit 91657eafb ("xfrm: take net hdr len into account for esp payload size calculation") introduced a possible interger overflow in esp{4,6}_get_mtu() handlers in case of x->props.mode equals XFRM_MODE_TUNNEL. Thus, the following expression will overflow unsigned int net_adj; ... <case ipv{4,6} XFRM_MODE_TUNNEL> net_adj = 0; ... return ((mtu - x->props.header_len - crypto_aead_authsize(esp->aead) - net_adj) & ~(align - 1)) + (net_adj - 2); where (net_adj - 2) would be evaluated as <foo> + (0 - 2) in an unsigned context. Fix it by simply removing brackets as those operations here do not need to have special precedence. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Benjamin Poirier <bpoirier@suse.de> Cc: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Benjamin Poirier <bpoirier@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* ah6/esp6: set transport header correctly for IPsec tunnel mode.Li RongQing2013-01-08
| | | | | | | | | | | | | IPsec tunnel does not set ECN field to CE in inner header when the ECN field in the outer header is CE, and the ECN field in the inner header is ECT(0) or ECT(1). The cause is ipip6_hdr() does not return the correct address of inner header since skb->transport-header is not the inner header after esp6_input_done2(), or ah6_input(). Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
* net: ipv6: fix error return codeJulia Lawall2012-08-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Initialize return variable before exiting on an error path. The initial initialization of the return variable is also dropped, because that value is never used. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: Add redirect support to all protocol icmp error handlers.David S. Miller2012-07-12
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: Handle PMTU in ICMP error handlers.David S. Miller2012-06-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One tricky issue on the ipv6 side vs. ipv4 is that the ICMP callouts to handle the error pass the 32-bit info cookie in network byte order whereas ipv4 passes it around in host byte order. Like the ipv4 side, we have two helper functions. One for when we have a socket context and one for when we do not. ip6ip6 tunnels are not handled here, because they handle PMTU events by essentially relaying another ICMP packet-too-big message back to the original sender. This patch allows us to get rid of rt6_do_pmtu_disc(). It handles all kinds of situations that simply cannot happen when we do the PMTU update directly using a fully resolved route. In fact, the "plen == 128" check in ip6_rt_update_pmtu() can very likely be removed or changed into a BUG_ON() check. We should never have a prefixed ipv6 route when we get there. Another piece of strange history here is that TCP and DCCP, unlike in ipv4, never invoke the update_pmtu() method from their ICMP error handlers. This is incredibly astonishing since this is the context where we have the most accurate context in which to make a PMTU update, namely we have a fully connected socket and associated cached socket route. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: take net hdr len into account for esp payload size calculationBenjamin Poirier2012-05-27
| | | | | | | | | | | | | Corrects the function that determines the esp payload size. The calculations done in esp{4,6}_get_mtu() lead to overlength frames in transport mode for certain mtu values and suboptimal frames for others. According to what is done, mainly in esp{,6}_output() and tcp_mtu_to_mss(), net_header_len must be taken into account before doing the alignment calculation. Signed-off-by: Benjamin Poirier <bpoirier@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: ipv4 and ipv6: Convert printk(KERN_DEBUG to pr_debugJoe Perches2012-05-16
| | | | | | | Use the current debugging style and enable dynamic_debug. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: ipv6: Standardize prefixes for message loggingJoe Perches2012-05-16
| | | | | | | | | | | | | | | | Add #define pr_fmt(fmt) as appropriate. Add "IPv6: " to appropriate files. Convert printk(KERN_<LEVEL> to pr_<level> (but not KERN_DEBUG). Standardize on "%s: " not "%s(): " when emitting __func__. Use "%s: ", __func__ instead of embedding function name. Coalesce formats, align arguments. ADDRCONF output is now prefixed with "IPv6: " Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2011-05-05
|\ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/tg3.c
| * esp6: Fix scatterlist initializationSteffen Klassert2011-04-26
| | | | | | | | | | | | | | | | | | | | | | | | When we use IPsec extended sequence numbers, we may overwrite the last scatterlist of the associated data by the scatterlist for the skb. This patch fixes this by placing the scatterlist for the skb right behind the last scatterlist of the associated data. esp4 does it already like that. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | inet: constify ip headers and in6_addrEric Dumazet2011-04-22
|/ | | | | | | | Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* esp6: Add support for IPsec extended sequence numbersSteffen Klassert2011-03-13
| | | | | | | | | | This patch adds IPsec extended sequence numbers support to esp6. We use the authencesn crypto algorithm to handle esp with separate encryption/authentication algorithms. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Use separate low and high order bits of the sequence numbers in ↵Steffen Klassert2011-03-13
| | | | | | | | | | | | | xfrm_skb_cb To support IPsec extended sequence numbers, we split the output sequence numbers of xfrm_skb_cb in low and high order 32 bits and we add the high order 32 bits to the input sequence numbers. All users are updated accordingly. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Traffic Flow Confidentiality for IPv6 ESPMartin Willi2010-12-10
| | | | | | | | | | Add TFC padding to all packets smaller than the boundary configured on the xfrm state. If the boundary is larger than the PMTU, limit padding to the PMTU. Signed-off-by: Martin Willi <martin@strongswan.org> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: SA lookups signature with markJamal Hadi Salim2010-02-22
| | | | | | | | 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>
* xfrm: Use the user specified truncation length in ESP and AHMartin Willi2009-11-25
| | | | | | | | 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>
* net: constify struct inet6_protocolAlexey Dobriyan2009-09-14
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: Use correct data types for ICMPv6 type and codeBrian Haley2009-06-23
| | | | | | | | | 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>
* netns xfrm: AH/ESP in netns!Alexey Dobriyan2008-11-25
| | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: state lookup in netnsAlexey Dobriyan2008-11-25
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: replace %p6 with %pI6Harvey Harrison2008-10-29
| | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: replace uses of NIP6_FMT with %p6Harvey Harrison2008-10-29
| | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipsec: Interfamily IPSec BEET, ipv4-inner ipv6-outerJoakim Koskela2008-08-06
| | | | | | | | | | | | | 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]: Ensure IV is in linear part of the skb to avoid BUG() due to OOB accessThomas Graf2008-03-27
| | | | | | | | | | | | | 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>
* [IPSEC]: Fix bogus usage of u64 on input sequence numberHerbert Xu2008-02-13
| | | | | | | | | 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>
* [XFRM]: constify 'struct xfrm_type'Eric Dumazet2008-01-31
| | | | | Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Add support for combined mode algorithmsHerbert Xu2008-01-31
| | | | | | | | | | | | | | | | 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>
* [IPSEC]: Use crypto_aead and authenc in ESPHerbert Xu2008-01-31
| | | | | | | | | 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>
* [IPSEC]: Move all calls to xfrm_audit_state_icvfail to xfrm_inputHerbert Xu2008-01-28
| | | | | | | Let's nip the code duplication in the bud :) Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: RFC4303 compliant auditingPaul Moore2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [IPSEC]: Move state lock into x->type->inputHerbert Xu2008-01-28
| | | | | | | | | | | | 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>
* [IPSEC]: Move integrity stat collection into xfrm_inputHerbert Xu2008-01-28
| | | | | | | | | | | | | | | | 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>
* [IPv6] ESP: Discard dummy packets introduced in rfc4303Thomas Graf2007-12-11
| | | | | | | | | | 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>
* [NET]: Fix incorrect sg_mark_end() calls.David S. Miller2007-10-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes scatterlist corruptions added by commit 68e3f5dd4db62619fdbe520d36c9ebf62e672256 [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>
* [CRYPTO] users: Fix up scatterlist conversion errorsHerbert Xu2007-10-27
| | | | | | | | | 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>
* [INET] ESP: Must #include <linux/scatterlist.h>Adrian Bunk2007-10-27
| | | | | | | | | | | | | | | | | | | | | | 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>
* [IPSEC]: Add missing sg_init_table() calls to ESP.David S. Miller2007-10-26
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC] IPV6: Fix to add tunnel mode SA correctly.Masahide NAKAMURA2007-10-22
| | | | | Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Disallow combinations of RO and AH/ESP/IPCOMPHerbert Xu2007-10-18
| | | | | | | | | | | | 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>
* [IPSEC]: Move IP length/checksum setting out of transformsHerbert Xu2007-10-10
| | | | | | | | | | | | This patch moves the setting of the IP length and checksum fields out of the transforms and into the xfrmX_output functions. This would help future efforts in merging the transforms themselves. It also adds an optimisation to ipcomp due to the fact that the transport offset is guaranteed to be zero. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Get rid of ipv6_{auth,esp,comp}_hdrHerbert Xu2007-10-10
| | | | | | | | | | | | | This patch removes the duplicate ipv6_{auth,esp,comp}_hdr structures since they're identical to the IPv4 versions. Duplicating them would only create problems for ourselves later when we need to add things like extended sequence numbers. I've also added transport header type conversion headers for these types which are now used by the transforms. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Set skb->data to payload in x->mode->outputHerbert Xu2007-10-10
| | | | | | | | | | | | | | | | This patch changes the calling convention so that on entry from x->mode->output and before entry into x->type->output skb->data will point to the payload instead of the IP header. This is essentially a redistribution of skb_push/skb_pull calls with the aim of minimising them on the common path of tunnel + ESP. It'll also let us use the same calling convention between IPv4 and IPv6 with the next patch. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Move state lock into x->type->outputHerbert Xu2007-10-10
| | | | | | | | | | | This patch releases the lock on the state before calling x->type->output. 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>
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