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2010-02-22xfrm: SP lookups signature with markJamal Hadi Salim1-2/+2
pass mark to all SP 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>
2010-02-22xfrm: SA lookups signature with markJamal Hadi Salim1-6/+8
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>
2010-02-22af_key: locking changestephen hemminger1-60/+16
Get rid of custom locking that was using wait queue, lock, and atomic to basically build a queued mutex. Use RCU for read side. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-19xfrm: Flushing empty SPD generates false eventsJamal Hadi Salim1-2/+5
To see the effect make sure you have an empty SPD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush" You get prompt back in window2 and you see the flush event on window1. With this fix, you still get prompt on window1 but no event on window2. Thanks to Alexey Dobriyan for finding a bug in earlier version when using pfkey to do the flushing. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-19xfrm: Flushing empty SAD generates false eventsJamal Hadi Salim1-1/+4
To see the effect make sure you have an empty SAD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm state flush" You get prompt back in window2 and you see the flush event on window1. With this fix, you still get prompt on window1 but no event on window2. Thanks to Alexey Dobriyan for finding a bug in earlier version when using pfkey to do the flushing. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-19pfkey: fix SA and SP flush sequenceJamal Hadi Salim1-6/+27
RFC 2367 says flushing behavior should be: 1) user space -> kernel: flush 2) kernel: flush 3) kernel -> user space: flush event to ALL listeners This is not realistic today in the presence of selinux policies which may reject the flush etc. So we make the sequence become: 1) user space -> kernel: flush 2) kernel: flush 3) kernel -> user space: flush response to originater from #1 4) if there were no errors then: kernel -> user space: flush event to ALL listeners Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-17xfrm: Revert false event eliding commits.David S. Miller1-2/+2
As reported by Alexey Dobriyan: -------------------- setkey now takes several seconds to run this simple script and it spits "recv: Resource temporarily unavailable" messages. #!/usr/sbin/setkey -f flush; spdflush; add A B ipcomp 44 -m tunnel -C deflate; add B A ipcomp 45 -m tunnel -C deflate; spdadd A B any -P in ipsec ipcomp/tunnel/192.168.1.2-192.168.1.3/use; spdadd B A any -P out ipsec ipcomp/tunnel/192.168.1.3-192.168.1.2/use; -------------------- Obviously applications want the events even when the table is empty. So we cannot make this behavioral change. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15xfrm: Flushing empty SPD generates false eventsjamal1-1/+1
Observed similar behavior on SPD as previouly seen on SAD flushing.. This fixes it. cheers, jamal commit 428b20432dc31bc2e01a94cd451cf5a2c00d2bf4 Author: Jamal Hadi Salim <hadi@cyberus.ca> Date: Thu Feb 11 05:49:38 2010 -0500 xfrm: Flushing empty SPD generates false events To see the effect make sure you have an empty SPD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15xfrm: Flushing empty SAD generates false eventsjamal1-1/+1
To see the effect make sure you have an empty SAD. -On window1 "ip xfrm mon" -on window2 issue "ip xfrm state flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. I was tempted to return -ESRCH on window1 (which would show "RTNETLINK answers: No such process") but didnt want to change current behavior. cheers, jamal commit 5f3dd4a772326166e1bcf54acc2391df00dc7ab5 Author: Jamal Hadi Salim <hadi@cyberus.ca> Date: Thu Feb 11 04:41:36 2010 -0500 xfrm: Flushing empty SAD generates false events To see the effect make sure you have an empty SAD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm state flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10net: af_key: use seq_hlist_foo() helpersLi Zefan1-17/+3
Simplify seq_file code. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03Merge branch 'master' of ↵David S. Miller1-7/+8
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-02-03af_key: fix netns ops ordering on module load/unloadAlexey Dobriyan1-7/+8
1. After sock_register() returns, it's possible to create sockets, even if module still not initialized fully (blame generic module code for that!) 2. Consequently, pfkey_create() can be called with pfkey_net_id still not initialized which will BUG_ON in net_generic(): kernel BUG at include/net/netns/generic.h:43! 3. During netns shutdown, netns ops should be unregistered after key manager unregistered because key manager calls can be triggered from xfrm_user module: general protection fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC pfkey_broadcast+0x111/0x210 [af_key] pfkey_send_notify+0x16a/0x300 [af_key] km_state_notify+0x41/0x70 xfrm_flush_sa+0x75/0x90 [xfrm_user] 4. Unregister netns ops after socket ops just in case and for symmetry. Reported by Luca Tettamanti. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Tested-by: Luca Tettamanti <kronos.it@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-02xfrm: avoid spinlock in get_acqseq()Eric Dumazet1-5/+4
Use atomic_inc_return() in get_acqseq() to avoid taking a spinlock Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-17net: spread __net_init, __net_exitAlexey Dobriyan1-3/+3
__net_init/__net_exit are apparently not going away, so use them to full extent. In some cases __net_init was removed, because it was called from __net_exit code. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-11xfrm: Fix truncation length of authentication algorithms installed via PF_KEYMartin Willi1-0/+1
Commit 4447bb33f09444920a8f1d89e1540137429351b6 ("xfrm: Store aalg in xfrm_state with a user specified truncation length") breaks installation of authentication algorithms via PF_KEY, as the state specific truncation length is not installed with the algorithms default truncation length. This patch initializes state properly to the default if installed via PF_KEY. 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>
2009-12-01net: Simplify af_key pernet operations.Eric W. Biederman1-19/+6
Take advantage of the new pernet automatic storage management, and stop using compatibility network namespace functions. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-18netns: net_identifiers should be read_mostlyEric Dumazet1-1/+1
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-05net: pass kern to net_proto_family create functionEric Paris1-1/+2
The generic __sock_create function has a kern argument which allows the security system to make decisions based on if a socket is being created by the kernel or by userspace. This patch passes that flag to the net_proto_family specific create function, so it can do the same thing. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-12net: Generalize socket rx gap / receive queue overflow cmsgNeil Horman1-1/+1
Create a new socket level option to report number of queue overflows Recently I augmented the AF_PACKET protocol to report the number of frames lost on the socket receive queue between any two enqueued frames. This value was exported via a SOL_PACKET level cmsg. AFter I completed that work it was requested that this feature be generalized so that any datagram oriented socket could make use of this option. As such I've created this patch, It creates a new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue overflowed between any two given frames. It also augments the AF_PACKET protocol to take advantage of this new feature (as it previously did not touch sk->sk_drops, which this patch uses to record the overflow count). Tested successfully by me. Notes: 1) Unlike my previous patch, this patch simply records the sk_drops value, which is not a number of drops between packets, but rather a total number of drops. Deltas must be computed in user space. 2) While this patch currently works with datagram oriented protocols, it will also be accepted by non-datagram oriented protocols. I'm not sure if thats agreeable to everyone, but my argument in favor of doing so is that, for those protocols which aren't applicable to this option, sk_drops will always be zero, and reporting no drops on a receive queue that isn't used for those non-participating protocols seems reasonable to me. This also saves us having to code in a per-protocol opt in mechanism. 3) This applies cleanly to net-next assuming that commit 977750076d98c7ff6cbda51858bb5a5894a9d9ab (my af packet cmsg patch) is reverted Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-07net: mark net_proto_ops as constStephen Hemminger1-1/+1
All usages of structure net_proto_ops should be declared const. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-02net: file_operations should be constStephen Hemminger1-1/+1
All instances of file_operations should be const. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-02net: seq_operations should be constStephen Hemminger1-1/+1
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-18net: correct off-by-one write allocations reportsEric Dumazet1-2/+2
commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 (net: No more expensive sock_hold()/sock_put() on each tx) changed initial sk_wmem_alloc value. We need to take into account this offset when reporting sk_wmem_alloc to user, in PROC_FS files or various ioctls (SIOCOUTQ/TIOCOUTQ) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26af_key: remove some pointless conditionals before kfree_skb()Wei Yongjun1-4/+2
Remove some pointless conditionals before kfree_skb(). Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-25af_key: initialize xfrm encap_oaTimo Teras1-0/+1
Currently encap_oa is left uninitialized, so it contains garbage data which is visible to userland via Netlink. Initialize it by zeroing it out. Signed-off-by: Timo Teras <timo.teras@iki.fi> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns PF_KEY: per-netns /proc/pfkeyAlexey Dobriyan1-17/+17
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns PF_KEY: part 2Alexey Dobriyan1-45/+60
* interaction with userspace -- take netns from userspace socket. * in ->notify hook take netns either from SA or explicitly passed -- we don't know if SA/SPD flush is coming. * stub policy migration with init_net for now. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns PF_KEY: part 1Alexey Dobriyan1-15/+73
* netns boilerplate * keep per-netns socket list * keep per-netns number of sockets Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: pass netns with KM notificationsAlexey Dobriyan1-0/+2
SA and SPD flush are executed with NULL SA and SPD respectively, for these cases pass netns explicitly from userspace socket. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: policy walking in netnsAlexey Dobriyan1-2/+2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: finding policy in netnsAlexey Dobriyan1-3/+3
Add netns parameter to xfrm_policy_bysel_ctx(), xfrm_policy_byidx(). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: policy flushing in netnsAlexey Dobriyan1-1/+1
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: state walking in netnsAlexey Dobriyan1-1/+1
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: finding states in netnsAlexey Dobriyan1-3/+3
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: state lookup in netnsAlexey Dobriyan1-1/+1
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: state flush in netnsAlexey Dobriyan1-1/+1
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: add struct xfrm_policy::xp_netAlexey Dobriyan1-2/+2
Again, to avoid complications with passing netns when not necessary. Again, ->xp_net is set-once field, once set it never changes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: per-netns km_waitqAlexey Dobriyan1-1/+1
Disallow spurious wakeups in __xfrm_lookup(). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: add struct xfrm_state::xs_netAlexey Dobriyan1-1/+1
To avoid unnecessary complications with passing netns around. * set once, very early after allocating * once set, never changes For a while create every xfrm_state in init_net. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-06af_key: mark policy as dead before destroyingAlexey Dobriyan1-0/+1
xfrm_policy_destroy() will oops if not dead policy is passed to it. On error path in pfkey_compile_policy() exactly this happens. Oopsable for CAP_NET_ADMIN owners. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-31key: fix setkey(8) policy set breakageAlexey Dobriyan1-1/+0
Steps to reproduce: #/usr/sbin/setkey -f flush; spdflush; add 192.168.0.42 192.168.0.1 ah 24500 -A hmac-md5 "1234567890123456"; add 192.168.0.42 192.168.0.1 esp 24501 -E 3des-cbc "123456789012123456789012"; spdadd 192.168.0.42 192.168.0.1 any -P out ipsec esp/transport//require ah/transport//require; setkey: invalid keymsg length Policy dump will bail out with the same message after that. -recv(4, "\2\16\0\0\32\0\3\0\0\0\0\0\37\r\0\0\3\0\5\0\377 \0\0\2\0\0\0\300\250\0*\0"..., 32768, 0) = 208 +recv(4, "\2\16\0\0\36\0\3\0\0\0\0\0H\t\0\0\3\0\5\0\377 \0\0\2\0\0\0\300\250\0*\0"..., 32768, 0) = 208 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-10af_key: fix SADB_X_SPDDELETE responseTobias Brunner1-0/+1
When deleting an SPD entry using SADB_X_SPDDELETE, c.data.byid is not initialized to zero in pfkey_spddelete(). Thus, key_notify_policy() responds with a PF_KEY message of type SADB_X_SPDDELETE2 instead of SADB_X_SPDDELETE. Signed-off-by: Tobias Brunner <tobias.brunner@strongswan.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-05xfrm: MIGRATE enhancements (draft-ebalard-mext-pfkey-enhanced-migrate)Arnaud Ebalard1-17/+69
Provides implementation of the enhancements of XFRM/PF_KEY MIGRATE mechanism specified in draft-ebalard-mext-pfkey-enhanced-migrate-00. Defines associated PF_KEY SADB_X_EXT_KMADDRESS extension and XFRM/netlink XFRMA_KMADDRESS attribute. Signed-off-by: Arnaud Ebalard <arno@natisbad.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-01ipsec: Put dumpers on the dump listHerbert Xu1-5/+33
Herbert Xu came up with the idea and the original patch to make xfrm_state dump list contain also dumpers: As it is we go to extraordinary lengths to ensure that states don't go away while dumpers go to sleep. It's much easier if we just put the dumpers themselves on the list since they can't go away while they're going. I've also changed the order of addition on new states to prevent a never-ending dump. Timo Teräs improved the patch to apply cleanly to latest tree, modified iteration code to be more readable by using a common struct for entries in the list, implemented the same idea for xfrm_policy dumping and moved the af_key specific "last" entry caching to af_key. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Timo Teras <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-01af_key: Free dumping state on socket closeTimo Teras1-11/+19
Fix a xfrm_{state,policy}_walk leak if pfkey socket is closed while dumping is on-going. Signed-off-by: Timo Teras <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-25net: convert BUG_TRAP to generic WARN_ONIlpo Järvinen1-2/+2
Removes legacy reinvent-the-wheel type thing. The generic machinery integrates much better to automated debugging aids such as kerneloops.org (and others), and is unambiguous due to better naming. Non-intuively BUG_TRAP() is actually equal to WARN_ON() rather than BUG_ON() though some might actually be promoted to BUG_ON() but I left that to future. I could make at least one BUILD_BUG_ON conversion. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-13Merge branch 'master' of ↵David S. Miller1-0/+3
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/smc911x.c
2008-06-12key: Use xfrm_addr_cmp() where appropriate.YOSHIFUJI Hideaki1-8/+1
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-12key: Share common code path to extract address from sockaddr{}.YOSHIFUJI Hideaki1-69/+38
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-12key: Share common code path to fill sockaddr{}.YOSHIFUJI Hideaki1-347/+111
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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