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* | net: ipv6: fix oops in inet_putpeer()Patrick McHardy2012-08-201-0/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 97bab73f (inet: Hide route peer accesses behind helpers.) introduced a bug in xfrm6_policy_destroy(). The xfrm_dst's _rt6i_peer member is not initialized, causing a false positive result from inetpeer_ptr_is_peer(), which in turn causes a NULL pointer dereference in inet_putpeer(). Pid: 314, comm: kworker/0:1 Not tainted 3.6.0-rc1+ #17 To Be Filled By O.E.M. To Be Filled By O.E.M./P4S800D-X EIP: 0060:[<c03abf93>] EFLAGS: 00010246 CPU: 0 EIP is at inet_putpeer+0xe/0x16 EAX: 00000000 EBX: f3481700 ECX: 00000000 EDX: 000dd641 ESI: f3481700 EDI: c05e949c EBP: f551def4 ESP: f551def4 DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 CR0: 8005003b CR2: 00000070 CR3: 3243d000 CR4: 00000750 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 f551df04 c0423de1 00000000 f3481700 f551df18 c038d5f7 f254b9f8 f551df28 f34f85d8 f551df20 c03ef48d f551df3c c0396870 f30697e8 f24e1738 c05e98f4 f5509540 c05cd2b4 f551df7c c0142d2b c043feb5 f5509540 00000000 c05cd2e8 [<c0423de1>] xfrm6_dst_destroy+0x42/0xdb [<c038d5f7>] dst_destroy+0x1d/0xa4 [<c03ef48d>] xfrm_bundle_flo_delete+0x2b/0x36 [<c0396870>] flow_cache_gc_task+0x85/0x9f [<c0142d2b>] process_one_work+0x122/0x441 [<c043feb5>] ? apic_timer_interrupt+0x31/0x38 [<c03967eb>] ? flow_cache_new_hashrnd+0x2b/0x2b [<c0143e2d>] worker_thread+0x113/0x3cc Fix by adding a init_dst() callback to struct xfrm_policy_afinfo to properly initialize the dst's peer pointer. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Document dst->obsolete better.David S. Miller2012-07-201-11/+12
| | | | | | | | | Add a big comment explaining how the field works, and use defines instead of magic constants for the values assigned to it. Suggested by Joe Perches. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Initialize the struct xfrm_dst behind the dst_enty fieldSteffen Klassert2012-07-141-2/+3
| | | | | | | | | | | We start initializing the struct xfrm_dst at the first field behind the struct dst_enty. This is error prone because it might leave a new field uninitialized. So start initializing the struct xfrm_dst right behind the dst_entry. Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: No need to copy generic neighbour pointer.David S. Miller2012-07-051-3/+0
| | | | | | Nobody reads it any longer. Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Add optional SKB arg to dst_ops->neigh_lookup().David S. Miller2012-07-051-2/+4
| | | | | | | Causes the handler to use the daddr in the ipv4/ipv6 header when the route gateway is unspecified (local subnet). Signed-off-by: David S. Miller <davem@davemloft.net>
* ipv6: fix incorrect ipsec fragmentGao feng2012-05-271-0/+3
| | | | | | | | | | | | | | | | | | | | | | | Since commit ad0081e43a "ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed" the fragment of packets is incorrect. because tunnel mode needs IPsec headers and trailer for all fragments, while on transport mode it is sufficient to add the headers to the first fragment and the trailer to the last. so modify mtu and maxfraglen base on ipsec mode and if fragment is first or last. with my test,it work well(every fragment's size is the mtu) and does not trigger slow fragment path. Changes from v1: though optimization, mtu_prev and maxfraglen_prev can be delete. replace xfrm mode codes with dst_entry's new frag DST_XFRM_TUNNEL. add fuction ip6_append_data_mtu to make codes clearer. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'next' of ↵Linus Torvalds2012-05-211-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "New notable features: - The seccomp work from Will Drewry - PR_{GET,SET}_NO_NEW_PRIVS from Andy Lutomirski - Longer security labels for Smack from Casey Schaufler - Additional ptrace restriction modes for Yama by Kees Cook" Fix up trivial context conflicts in arch/x86/Kconfig and include/linux/filter.h * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (65 commits) apparmor: fix long path failure due to disconnected path apparmor: fix profile lookup for unconfined ima: fix filename hint to reflect script interpreter name KEYS: Don't check for NULL key pointer in key_validate() Smack: allow for significantly longer Smack labels v4 gfp flags for security_inode_alloc()? Smack: recursive tramsmute Yama: replace capable() with ns_capable() TOMOYO: Accept manager programs which do not start with / . KEYS: Add invalidation support KEYS: Do LRU discard in full keyrings KEYS: Permit in-place link replacement in keyring list KEYS: Perform RCU synchronisation on keys prior to key destruction KEYS: Announce key type (un)registration KEYS: Reorganise keys Makefile KEYS: Move the key config into security/keys/Kconfig KEYS: Use the compat keyctl() syscall wrapper on Sparc64 for Sparc32 compat Yama: remove an unused variable samples/seccomp: fix dependencies on arch macros Yama: add additional ptrace scopes ...
| * SELinux: include flow.h where used rather than get it indirectlyEric Paris2012-04-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We use flow_cache_genid in the selinux xfrm files. This is declared in net/flow.h However we do not include that file directly anywhere. We have always just gotten it through a long chain of indirect .h file includes. on x86_64: CC security/selinux/ss/services.o In file included from /next/linux-next-20120216/security/selinux/ss/services.c:69:0: /next/linux-next-20120216/security/selinux/include/xfrm.h: In function 'selinux_xfrm_notify_policyload': /next/linux-next-20120216/security/selinux/include/xfrm.h:51:14: error: 'flow_cache_genid' undeclared (first use in this function) /next/linux-next-20120216/security/selinux/include/xfrm.h:51:14: note: each undeclared identifier is reported only once for each function it appears in make[3]: *** [security/selinux/ss/services.o] Error 1 Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Eric Paris <eparis@redhat.com>
* | xfrm: Convert several xfrm policy match functions to bool.David S. Miller2012-05-151-13/+14
|/ | | | | | | | | xfrm_selector_match xfrm_sec_ctx_match __xfrm4_selector_match __xfrm6_selector_match Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2011-12-231-4/+14
|\ | | | | | | | | | | | | | | | | | | Conflicts: net/bluetooth/l2cap_core.c Just two overlapping changes, one added an initialization of a local variable, and another change added a new local variable. Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: Add a flow_cache_flush_deferred functionSteffen Klassert2011-12-211-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | flow_cach_flush() might sleep but can be called from atomic context via the xfrm garbage collector. So add a flow_cache_flush_deferred() function and use this if the xfrm garbage colector is invoked from within the packet path. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: use IS_ENABLED(CONFIG_IPV6)Eric Dumazet2011-12-111-3/+3
| | | | | | | | | | | | | | Instead of testing defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: Rename dst_get_neighbour{, _raw} to dst_get_neighbour_noref{, _raw}.David Miller2011-12-051-1/+1
| | | | | | | | | | | | | | | | To reflect the fact that a refrence is not obtained to the resulting neighbour entry. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Roland Dreier <roland@purestorage.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2011-11-261-4/+6
|\ \ | |/ | | | | | | Conflicts: net/ipv4/inet_diag.c
| * net: Move mtu handling down to the protocol depended handlersSteffen Klassert2011-11-261-1/+3
| | | | | | | | | | | | | | | | | | We move all mtu handling from dst_mtu() down to the protocol layer. So each protocol can implement the mtu handling in a different manner. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: Rename the dst_opt default_mtu method to mtuSteffen Klassert2011-11-261-3/+3
| | | | | | | | | | | | | | | | | | We plan to invoke the dst_opt->default_mtu() method unconditioally from dst_mtu(). So rename the method to dst_opt->mtu() to match the name with the new meaning. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | xfrm: optimize ipv4 selector matchingAlexey Dobriyan2011-11-221-2/+2
|/ | | | | | | | | | 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>
* net: check return value for dst_allocMadalin Bucur2011-09-271-4/+6
| | | | | | | return value of dst_alloc must be checked before use Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Add ->neigh_lookup() operation to dst_opsDavid S. Miller2011-07-181-0/+7
| | | | | | | | In the future dst entries will be neigh-less. In that environment we need to have an easy transition point for current users of dst->neighbour outside of the packet output fast path. Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Abstract dst->neighbour accesses behind helpers.David S. Miller2011-07-171-1/+1
| | | | | | dst_{get,set}_neighbour() Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Remove family arg from xfrm_bundle_okSteffen Klassert2011-07-011-3/+3
| | | | | | | The family arg is not used any more, so remove it. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2011-05-111-1/+13
|\ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-3.6 Conflicts: drivers/net/benet/be_main.c
| * xfrm: Assign the inner mode output function to the dst entrySteffen Klassert2011-05-101-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | net: Use non-zero allocations in dst_alloc().David S. Miller2011-04-281-0/+1
| | | | | | | | | | | | | | | | | | | | Make dst_alloc() and it's users explicitly initialize the entire entry. The zero'ing done by kmem_cache_zalloc() was almost entirely redundant. Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: Make dst_alloc() take more explicit initializations.David S. Miller2011-04-281-1/+1
|/ | | | | | | Now the dst->dev, dev->obsolete, and dst->flags values can be specified as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Refcount destination entry on xfrm_lookupSteffen Klassert2011-03-161-0/+2
| | | | | | | | | | | | | | We return a destination entry without refcount if a socket policy is found in xfrm_lookup. This triggers a warning on a negative refcount when freeeing this dst entry. So take a refcount in this case to fix it. This refcount was forgotten when xfrm changed to cache bundles instead of policies for outgoing flows. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: fix __xfrm_route_forward()Eric Dumazet2011-03-151-2/+2
| | | | | | | | | | This function should return 0 in case of error, 1 if OK commit 452edd598f60522 (xfrm: Return dst directly from xfrm_lookup()) got it wrong. Reported-and-bisected-by: Michael Smith <msmith@cbnco.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Use flowi4 and flowi6 in xfrm layer.David S. Miller2011-03-121-12/+16
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Break struct flowi out into AF specific instances.David S. Miller2011-03-121-4/+4
| | | | | | | | | | | Now we have struct flowi4, flowi6, and flowidn for each address family. And struct flowi is just a union of them all. It might have been troublesome to convert flow_cache_uli_match() but as it turns out this function is completely unused and therefore can be simply removed. Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Make flowi ports AF dependent.David S. Miller2011-03-121-4/+4
| | | | | | | | | | | | 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>
* net: Put flowi_* prefix on AF independent members of struct flowiDavid S. Miller2011-03-121-9/+9
| | | | | | | | | | 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>
* xfrm: Eliminate "fl" and "pol" args to xfrm_bundle_ok().David S. Miller2011-03-121-19/+3
| | | | | | | There is only one caller of xfrm_bundle_ok(), and that always passes these parameters as NULL. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Return dst directly from xfrm_lookup()David S. Miller2011-03-021-17/+17
| | | | | | Instead of on the stack. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Handle blackhole route creation via afinfo.David S. Miller2011-03-011-20/+26
| | | | | | | That way we don't have to potentially do this in every xfrm_lookup() caller. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Kill XFRM_LOOKUP_WAIT flag.David S. Miller2011-03-011-1/+1
| | | | | | This can be determined from the flow flags instead. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify sec_path arg to secpath_has_nontransport.David S. Miller2011-02-231-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify ptr args to xfrm_policy_ok.David S. Miller2011-02-231-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify ptr args to xfrm_state_ok.David S. Miller2011-02-231-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify selector arg to xfrm_dst_update_parent.David S. Miller2011-02-231-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify policy arg to clone_policy.David S. Miller2011-02-231-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify policy arg and local selector in xfrm_policy_match.David S. Miller2011-02-231-2/+3
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify local xfrm_address_t pointers in xfrm_policy_lookup_bytype.David S. Miller2011-02-231-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify selector args in xfrm_migrate paths.David S. Miller2011-02-231-4/+4
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify address args to hash helpers.David S. Miller2011-02-231-2/+7
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify pointer args to migrate_tmpl_match and xfrm_migrate_checkDavid S. Miller2011-02-231-2/+2
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify address arguments to __xfrm_dst_lookup()David S. Miller2011-02-231-2/+2
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Const'ify selector argument to xfrm_selector_match()David S. Miller2011-02-231-3/+3
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Make flow cache paths use a const struct flowi.David S. Miller2011-02-221-5/+8
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Mark flowi arg to xfrm_resolve_and_create_bundle() const.David S. Miller2011-02-221-1/+1
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Mark flowi arg to xfrm_dst_{alloc_copy,update_origin}() const.David S. Miller2011-02-221-2/+2
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
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