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path: root/include/net/xfrm.h
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2011-11-22net: remove ipv6_addr_copy()Alexey Dobriyan
C assignment can handle struct in6_addr copying. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-22xfrm: optimize ipv4 selector matchingAlexey Dobriyan
Current addr_match() is errh, under-optimized. Compiler doesn't know that memcmp() branch doesn't trigger for IPv4. Also, pass addresses by value -- they fit into register. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-11Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-3.6 Conflicts: drivers/net/benet/be_main.c
2011-05-10xfrm: Assign the inner mode output function to the dst entrySteffen Klassert
As it is, we assign the outer modes output function to the dst entry when we create the xfrm bundle. This leads to two problems on interfamily scenarios. We might insert ipv4 packets into ip6_fragment when called from xfrm6_output. The system crashes if we try to fragment an ipv4 packet with ip6_fragment. This issue was introduced with git commit ad0081e4 (ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed). The second issue is, that we might insert ipv4 packets in netfilter6 and vice versa on interfamily scenarios. With this patch we assign the inner mode output function to the dst entry when we create the xfrm bundle. So xfrm4_output/xfrm6_output from the inner mode is used and the right fragmentation and netfilter functions are called. We switch then to outer mode with the output_finish functions. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22inet: constify ip headers and in6_addrEric Dumazet
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>
2011-04-11Disable rp_filter for IPsec packetsMichael Smith
The reverse path filter interferes with IPsec subnet-to-subnet tunnels, especially when the link to the IPsec peer is on an interface other than the one hosting the default route. With dynamic routing, where the peer might be reachable through eth0 today and eth1 tomorrow, it's difficult to keep rp_filter enabled unless fake routes to the remote subnets are configured on the interface currently used to reach the peer. IPsec provides a much stronger anti-spoofing policy than rp_filter, so this patch disables the rp_filter for packets with a security path. Signed-off-by: Michael Smith <msmith@cbnco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-29xfrm: Assign esn pointers when cloning a stateSteffen Klassert
When we clone a xfrm state we have to assign the replay_esn and the preplay_esn pointers to the state if we use the new replay detection method. To this end, we add a xfrm_replay_clone() function that allocates memory for the replay detection and takes over the necessary values from the original state. 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>
2011-03-22xfrm: Fix initialize repl field of struct xfrm_stateWei Yongjun
Commit 'xfrm: Move IPsec replay detection functions to a separate file' (9fdc4883d92d20842c5acea77a4a21bb1574b495) introduce repl field to struct xfrm_state, and only initialize it under SA's netlink create path, the other path, such as pf_key, ipcomp/ipcomp6 etc, the repl field remaining uninitialize. So if the SA is created by pf_key, any input packet with SA's encryption algorithm will cause panic. int xfrm_input() { ... x->repl->advance(x, seq); ... } This patch fixed it by introduce new function __xfrm_init_state(). Pid: 0, comm: swapper Not tainted 2.6.38-next+ #14 Bochs Bochs EIP: 0060:[<c078e5d5>] EFLAGS: 00010206 CPU: 0 EIP is at xfrm_input+0x31c/0x4cc EAX: dd839c00 EBX: 00000084 ECX: 00000000 EDX: 01000000 ESI: dd839c00 EDI: de3a0780 EBP: dec1de88 ESP: dec1de64 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process swapper (pid: 0, ti=dec1c000 task=c09c0f20 task.ti=c0992000) Stack: 00000000 00000000 00000002 c0ba27c0 00100000 01000000 de3a0798 c0ba27c0 00000033 dec1de98 c0786848 00000000 de3a0780 dec1dea4 c0786868 00000000 dec1debc c074ee56 e1da6b8c de3a0780 c074ed44 de3a07a8 dec1decc c074ef32 Call Trace: [<c0786848>] xfrm4_rcv_encap+0x22/0x27 [<c0786868>] xfrm4_rcv+0x1b/0x1d [<c074ee56>] ip_local_deliver_finish+0x112/0x1b1 [<c074ed44>] ? ip_local_deliver_finish+0x0/0x1b1 [<c074ef32>] NF_HOOK.clone.1+0x3d/0x44 [<c074ef77>] ip_local_deliver+0x3e/0x44 [<c074ed44>] ? ip_local_deliver_finish+0x0/0x1b1 [<c074ec03>] ip_rcv_finish+0x30a/0x332 [<c074e8f9>] ? ip_rcv_finish+0x0/0x332 [<c074ef32>] NF_HOOK.clone.1+0x3d/0x44 [<c074f188>] ip_rcv+0x20b/0x247 [<c074e8f9>] ? ip_rcv_finish+0x0/0x332 [<c072797d>] __netif_receive_skb+0x373/0x399 [<c0727bc1>] netif_receive_skb+0x4b/0x51 [<e0817e2a>] cp_rx_poll+0x210/0x2c4 [8139cp] [<c072818f>] net_rx_action+0x9a/0x17d [<c0445b5c>] __do_softirq+0xa1/0x149 [<c0445abb>] ? __do_softirq+0x0/0x149 Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-14xfrm: Add support for IPsec extended sequence numbersSteffen Klassert
This patch adds support for IPsec extended sequence numbers (esn) as defined in RFC 4303. The bits to manage the anti-replay window are based on a patch from Alex Badea. 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>
2011-03-14xfrm: Move IPsec replay detection functions to a separate fileSteffen Klassert
To support multiple versions of replay detection, we move the replay detection functions to a separate file and make them accessible via function pointers contained in the struct xfrm_replay. 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>
2011-03-14xfrm: Use separate low and high order bits of the sequence numbers in ↵Steffen Klassert
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>
2011-03-14xfrm: Add basic infrastructure to support IPsec extended sequence numbersSteffen Klassert
This patch adds the struct xfrm_replay_state_esn which will be used to support IPsec extended sequence numbers and anti replay windows bigger than 32 packets. Also we add a function that returns the actual size of the xfrm_replay_state_esn, a xfrm netlink atribute and a xfrm state flag for the use of extended sequence numbers. 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>
2011-03-12net: Use flowi4 and flowi6 in xfrm layer.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12net: Make flowi ports AF dependent.David S. Miller
Create two sets of port member accessors, one set prefixed by fl4_* and the other prefixed by fl6_* This will let us to create AF optimal flow instances. It will work because every context in which we access the ports, we have to be fully aware of which AF the flowi is anyways. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12net: Put flowi_* prefix on AF independent members of struct flowiDavid S. Miller
I intend to turn struct flowi into a union of AF specific flowi structs. There will be a common structure that each variant includes first, much like struct sock_common. This is the first step to move in that direction. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-01xfrm: Handle blackhole route creation via afinfo.David S. Miller
That way we don't have to potentially do this in every xfrm_lookup() caller. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-28xfrm: Pass const xfrm_mark to xfrm_mark_put().David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-28xfrm: Pass const xfrm_address_t objects to xfrm_state_lookup* and xfrm_find_acq.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-28xfrm: Pass const arg to xfrm_alg_len and xfrm_alg_auth_len.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-28xfrm: Pass name as const to xfrm_*_get_byname().David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify xfrm_address_t args to xfrm_state_find.David S. Miller
This required a const'ification in xfrm_init_tempstate() too. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify ptr args to xfrm_state_*_check and xfrm_state_kern.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify xfrm_tmpl and xfrm_state args to xfrm_state_addr_cmp.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify policy arg to xp_net.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify selector args in xfrm_migrate paths.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify pointer args to km_migrate() and implementations.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify address argument to xfrm_addr_any()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify address arguments to xfrm_addr_cmp()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify address arguments to ->dst_lookup()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify selector argument to xfrm_selector_match()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Const'ify tmpl and address arguments to ->init_temprop()David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-24xfrm: Pass km_event pointers around as const when possible.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to xfrm_state_find() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to xfrm_selector_match() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark token args to addr_match() const.David S. Miller
Also, make it return a real bool. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to xfrm_type->reject() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to ->init_tempsel() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to ->fill_dst() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg to ->get_tos() const.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23xfrm: Mark flowi arg const in key extraction helpers.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-08ipsec: allow to align IPv4 AH on 32 bitsNicolas Dichtel
The Linux IPv4 AH stack aligns the AH header on a 64 bit boundary (like in IPv6). This is not RFC compliant (see RFC4302, Section 3.3.3.2.1), it should be aligned on 32 bits. For most of the authentication algorithms, the ICV size is 96 bits. The AH header alignment on 32 or 64 bits gives the same results. However for SHA-256-128 for instance, the wrong 64 bit alignment results in adding useless padding in IPv4 AH, which is forbidden by the RFC. To avoid breaking backward compatibility, we use a new flag (XFRM_STATE_ALIGN4) do change original behavior. Initial patch from Dang Hongwu <hongwu.dang@6wind.com> and Christophe Gouault <christophe.gouault@6wind.com>. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-10xfrm: Add Traffic Flow Confidentiality padding XFRM attributeMartin Willi
The XFRMA_TFCPAD attribute for XFRM state installation configures Traffic Flow Confidentiality by padding ESP packets to a specified length. 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>
2010-11-28xfrm: fix gre key endianessTimo Teräs
fl->fl_gre_key is network byte order contrary to fl->fl_icmp_*. Make xfrm_flowi_{s|d}port return network byte order values for gre key too. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-15xfrm: use gre key as flow upper protocol infoTimo Teräs
The GRE Key field is intended to be used for identifying an individual traffic flow within a tunnel. It is useful to be able to have XFRM policy selector matches to have different policies for different GRE tunnels. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-27tunnels: add __rcu annotationsEric Dumazet
Add __rcu annotations to : (struct ip_tunnel)->prl (struct ip_tunnel_prl_entry)->next (struct xfrm_tunnel)->next struct xfrm_tunnel *tunnel4_handlers struct xfrm_tunnel *tunnel64_handlers And use appropriate rcu primitives to reduce sparse warnings if CONFIG_SPARSE_RCU_POINTER=y Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-25tunnels: add _rcu annotationsEric Dumazet
(struct ip6_tnl)->next is rcu protected : (struct ip_tunnel)->next is rcu protected : (struct xfrm6_tunnel)->next is rcu protected : add __rcu annotation and proper rcu primitives. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-21xfrm: make xfrm_bundle_ok localstephen hemminger
Only used in one place. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-21xfrm6: make xfrm6_tunnel_free_spi localstephen hemminger
Function only defined and used in one file. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-20xfrm: Allow different selector family in temporary stateThomas Egerer
The family parameter xfrm_state_find is used to find a state matching a certain policy. This value is set to the template's family (encap_family) right before xfrm_state_find is called. The family parameter is however also used to construct a temporary state in xfrm_state_find itself which is wrong for inter-family scenarios because it produces a selector for the wrong family. Since this selector is included in the xfrm_user_acquire structure, user space programs misinterpret IPv6 addresses as IPv4 and vice versa. This patch splits up the original init_tempsel function into a part that initializes the selector respectively the props and id of the temporary state, to allow for differing ip address families whithin the state. Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-30xfrm: fix XFRMA_MARK extraction in xfrm_mark_getAndreas Steffen
Determine the size of the xfrm_mark struct, not of its pointer. Signed-off-by: Andreas Steffen <andreas.steffen@strongswan.org> Acked-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
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