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2017-03-07Merge branch 'master' of ↵David S. Miller1-10/+9
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== pull request (net): ipsec 2017-03-06 1) Fix lockdep splat on xfrm policy subsystem initialization. From Florian Westphal. 2) When using socket policies on IPv4-mapped IPv6 addresses, we access the flow informations of the wrong address family what leads to an out of bounds access. Fix this by using the family we get with the dst_entry, like we do it for the standard policy lookup. 3) vti6 can report a PMTU below IPV6_MIN_MTU. Fix this by adding a check for that before sending a ICMPV6_PKT_TOOBIG message. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-26xfrm: provide correct dst in xfrm_neigh_lookupJulian Anastasov1-8/+21
Fix xfrm_neigh_lookup to provide dst->path to the neigh_lookup dst_ops method. When skb is provided, the IP address in packet should already match the dst->path address family. But for the non-skb case, we should consider the last tunnel address as nexthop address. Fixes: f894cbf847c9 ("net: Add optional SKB arg to dst_ops->neigh_lookup().") Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-16Merge branch 'master' of ↵David S. Miller3-108/+112
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== pull request (net-next): ipsec-next 2017-02-16 1) Make struct xfrm_input_afinfo const, nothing writes to it. From Florian Westphal. 2) Remove all places that write to the afinfo policy backend and make the struct const then. From Florian Westphal. 3) Prepare for packet consuming gro callbacks and add ESP GRO handlers. ESP packets can be decapsulated at the GRO layer then. It saves a round through the stack for each ESP packet. Please note that this has a merge coflict between commit 63fca65d0863 ("net: add confirm_neigh method to dst_ops") from net-next and 3d7d25a68ea5 ("xfrm: policy: remove garbage_collect callback") a2817d8b279b ("xfrm: policy: remove family field") from ipsec-next. The conflict can be solved as it is done in linux-next. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-15esp: Add a software GRO codepathSteffen Klassert1-5/+26
This patch adds GRO ifrastructure and callbacks for ESP on ipv4 and ipv6. In case the GRO layer detects an ESP packet, the esp{4,6}_gro_receive() function does a xfrm state lookup and calls the xfrm input layer if it finds a matching state. The packet will be decapsulated and reinjected it into layer 2. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-15xfrm: Extend the sec_path for IPsec offloadingSteffen Klassert1-0/+2
We need to keep per packet offloading informations across the layers. So we extend the sec_path to carry these for the input and output offload codepath. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-15xfrm: Export xfrm_parse_spi.Steffen Klassert1-0/+1
We need it in the ESP offload handlers, so export it. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-15net: Prepare gro for packet consuming gro callbacksSteffen Klassert1-0/+4
The upcomming IPsec ESP gro callbacks will consume the skb, so prepare for that. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-15xfrm: Add a secpath_set helper.Steffen Klassert1-12/+22
Add a new helper to set the secpath to the skb. This avoids code duplication, as this is used in multiple places. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-14xfrm: Don't use sk_family for socket policy lookupsSteffen Klassert1-5/+4
On IPv4-mapped IPv6 addresses sk_family is AF_INET6, but the flow informations are created based on AF_INET. So the routing set up 'struct flowi4' but we try to access 'struct flowi6' what leads to an out of bounds access. Fix this by using the family we get with the dst_entry, like we do it for the standard policy lookup. Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: policy: make policy backend constFlorian Westphal1-9/+9
Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: policy: remove xfrm_policy_put_afinfoFlorian Westphal1-13/+8
Alternative is to keep it an make the (unused) afinfo arg const to avoid the compiler warnings once the afinfo structs get constified. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: policy: remove family fieldFlorian Westphal1-17/+17
Only needed it to register the policy backend at init time. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: policy: remove garbage_collect callbackFlorian Westphal1-4/+2
Just call xfrm_garbage_collect_deferred() directly. This gets rid of a write to afinfo in register/unregister and allows to constify afinfo later on. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: policy: xfrm_policy_unregister_afinfo can return voidFlorian Westphal1-22/+13
Nothing checks the return value. Also, the errors returned on unregister are impossible (we only support INET and INET6, so no way xfrm_policy_afinfo[afinfo->family] can be anything other than 'afinfo' itself). Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: policy: xfrm_get_tos cannot failFlorian Westphal1-14/+5
The comment makes it look like get_tos() is used to validate something, but it turns out the comment was about xfrm_find_bundle() which got removed years ago. xfrm_get_tos will return either the tos (ipv4) or 0 (ipv6). Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: input: constify xfrm_input_afinfoFlorian Westphal1-20/+11
Nothing writes to these structures (the module owner was not used). While at it, size xfrm_input_afinfo[] by the highest existing xfrm family (INET6), not AF_MAX. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-09xfrm: policy: init locks earlyFlorian Westphal1-5/+5
Dmitry reports following splat: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 13059 Comm: syz-executor1 Not tainted 4.10.0-rc7-next-20170207 #1 [..] spin_lock_bh include/linux/spinlock.h:304 [inline] xfrm_policy_flush+0x32/0x470 net/xfrm/xfrm_policy.c:963 xfrm_policy_fini+0xbf/0x560 net/xfrm/xfrm_policy.c:3041 xfrm_net_init+0x79f/0x9e0 net/xfrm/xfrm_policy.c:3091 ops_init+0x10a/0x530 net/core/net_namespace.c:115 setup_net+0x2ed/0x690 net/core/net_namespace.c:291 copy_net_ns+0x26c/0x530 net/core/net_namespace.c:396 create_new_namespaces+0x409/0x860 kernel/nsproxy.c:106 unshare_nsproxy_namespaces+0xae/0x1e0 kernel/nsproxy.c:205 SYSC_unshare kernel/fork.c:2281 [inline] Problem is that when we get error during xfrm_net_init we will call xfrm_policy_fini which will acquire xfrm_policy_lock before it was initialized. Just move it around so locks get set up first. Reported-by: Dmitry Vyukov <dvyukov@google.com> Fixes: 283bc9f35bbbcb0e9 ("xfrm: Namespacify xfrm state/policy locks") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-08gro_cells: move to net/core/gro_cells.cEric Dumazet1-0/+1
We have many gro cells users, so lets move the code to avoid duplication. This creates a CONFIG_GRO_CELLS option. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-07net: add confirm_neigh method to dst_opsJulian Anastasov1-0/+19
Add confirm_neigh method to dst_ops and use it from IPv4 and IPv6 to lookup and confirm the neighbour. Its usage via the new helper dst_confirm_neigh() should be restricted to MSG_PROBE users for performance reasons. For XFRM prefer the last tunnel address, if present. With help from Steffen Klassert. Signed-off-by: Julian Anastasov <ja@ssi.bg> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30xfrm: Add a dummy network device for napi.Steffen Klassert1-1/+11
This patch adds a dummy network device so that we can use gro_cells for IPsec GRO. With this, we handle IPsec GRO with no impact on the generic networking code. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-01-16xfrm: fix possible null deref in xfrm_init_tempstateFlorian Westphal1-2/+4
Dan reports following smatch warning: net/xfrm/xfrm_state.c:659 error: we previously assumed 'afinfo' could be null (see line 651) 649 struct xfrm_state_afinfo *afinfo = xfrm_state_afinfo_get_rcu(family); 651 if (afinfo) ... 658 } 659 afinfo->init_temprop(x, tmpl, daddr, saddr); I am resonably sure afinfo cannot be NULL here. xfrm_state4.c and state6.c are both part of ipv4/ipv6 (depends on CONFIG_XFRM, a boolean) but even if ipv6 is a module state6.c can't be removed (ipv6 lacks module_exit so it cannot be removed). The only callers for xfrm6_fini that leads to state backend unregister are error unwinding paths that can be called during ipv6 init function. So after ipv6 module is loaded successfully the state backend cannot go away anymore. The family value from policy lookup path is taken from dst_entry, so that should always be AF_INET(6). However, since this silences the warning and avoids readers of this code wondering about possible null deref it seems preferrable to be defensive and just add the old check back. Fixes: 711059b9752ad0 ("xfrm: add and use xfrm_state_afinfo_get_rcu") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-01-10xfrm: state: simplify rcu_read_unlock handling in two spotsFlorian Westphal1-6/+7
Instead of: if (foo) { unlock(); return bar(); } unlock(); do: unlock(); if (foo) return bar(); This is ok because rcu protected structure is only dereferenced before the conditional. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-01-10xfrm: add and use xfrm_state_afinfo_get_rcuFlorian Westphal1-10/+15
xfrm_init_tempstate is always called from within rcu read side section. We can thus use a simpler function that doesn't call rcu_read_lock again. While at it, also make xfrm_init_tempstate return value void, the return value was never tested. A followup patch will replace remaining callers of xfrm_state_get_afinfo with xfrm_state_afinfo_get_rcu variant and then remove the 'old' get_afinfo interface. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-01-10xfrm: remove xfrm_state_put_afinfoFlorian Westphal2-23/+16
commit 44abdc3047aecafc141dfbaf1ed ("xfrm: replace rwlock on xfrm_state_afinfo with rcu") made xfrm_state_put_afinfo equivalent to rcu_read_unlock. Use spatch to replace it with direct calls to rcu_read_unlock: @@ struct xfrm_state_afinfo *a; @@ - xfrm_state_put_afinfo(a); + rcu_read_unlock(); old: text data bss dec hex filename 22570 72 424 23066 5a1a xfrm_state.o 1612 0 0 1612 64c xfrm_output.o new: 22554 72 424 23050 5a0a xfrm_state.o 1596 0 0 1596 63c xfrm_output.o Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-01-10xfrm: avoid rcu sparse warningFlorian Westphal1-8/+8
xfrm/xfrm_state.c:1973:21: error: incompatible types in comparison expression (different address spaces) Harmless, but lets fix it to reduce the noise. While at it, get rid of unneeded NULL check, its never hit: net/ipv4/xfrm4_state.c: xfrm_state_register_afinfo(&xfrm4_state_afinfo); net/ipv6/xfrm6_state.c: return xfrm_state_register_afinfo(&xfrm6_state_afinfo); net/ipv6/xfrm6_state.c: xfrm_state_unregister_afinfo(&xfrm6_state_afinfo); ... are the only callsites. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-01-06xfrm: state: do not acquire lock in get_mtu helpersFlorian Westphal1-8/+5
Once flow cache gets removed the mtu initialisation happens for every skb that gets an xfrm attached, so this lock starts to show up in perf. It is not obvious why this lock is required -- the caller holds reference on the state struct, type->destructor is only called from the state gc worker (all state structs on gc list must have refcount 0). xfrm_init_state already has been called (else private data accessed by type->get_mtu() would not be set up). So just remove the lock -- the race on the state (DEAD?) doesn't matter (could change right after dropping the lock too). Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-01-04xfrm: trivial typosAlexander Alemayhu2-2/+2
o s/descentant/descendant o s/workarbound/workaround Signed-off-by: Alexander Alemayhu <alexander@alemayhu.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-12-25ktime: Cleanup ktime_set() usageThomas Gleixner1-1/+1
ktime_set(S,N) was required for the timespec storage type and is still useful for situations where a Seconds and Nanoseconds part of a time value needs to be converted. For anything where the Seconds argument is 0, this is pointless and can be replaced with a simple assignment. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org>
2016-12-24Replace <asm/uaccess.h> with <linux/uaccess.h> globallyLinus Torvalds2-2/+2
This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>' sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12Merge branch 'smp-hotplug-for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull smp hotplug updates from Thomas Gleixner: "This is the final round of converting the notifier mess to the state machine. The removal of the notifiers and the related infrastructure will happen around rc1, as there are conversions outstanding in other trees. The whole exercise removed about 2000 lines of code in total and in course of the conversion several dozen bugs got fixed. The new mechanism allows to test almost every hotplug step standalone, so usage sites can exercise all transitions extensively. There is more room for improvement, like integrating all the pointlessly different architecture mechanisms of synchronizing, setting cpus online etc into the core code" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits) tracing/rb: Init the CPU mask on allocation soc/fsl/qbman: Convert to hotplug state machine soc/fsl/qbman: Convert to hotplug state machine zram: Convert to hotplug state machine KVM/PPC/Book3S HV: Convert to hotplug state machine arm64/cpuinfo: Convert to hotplug state machine arm64/cpuinfo: Make hotplug notifier symmetric mm/compaction: Convert to hotplug state machine iommu/vt-d: Convert to hotplug state machine mm/zswap: Convert pool to hotplug state machine mm/zswap: Convert dst-mem to hotplug state machine mm/zsmalloc: Convert to hotplug state machine mm/vmstat: Convert to hotplug state machine mm/vmstat: Avoid on each online CPU loops mm/vmstat: Drop get_online_cpus() from init_cpu_node_state/vmstat_cpu_dead() tracing/rb: Convert to hotplug state machine oprofile/nmi timer: Convert to hotplug state machine net/iucv: Use explicit clean up labels in iucv_init() x86/pci/amd-bus: Convert to hotplug state machine x86/oprofile/nmi: Convert to hotplug state machine ...
2016-12-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-5/+7
Couple conflicts resolved here: 1) In the MACB driver, a bug fix to properly initialize the RX tail pointer properly overlapped with some changes to support variable sized rings. 2) In XGBE we had a "CONFIG_PM" --> "CONFIG_PM_SLEEP" fix overlapping with a reorganization of the driver to support ACPI, OF, as well as PCI variants of the chip. 3) In 'net' we had several probe error path bug fixes to the stmmac driver, meanwhile a lot of this code was cleaned up and reorganized in 'net-next'. 4) The cls_flower classifier obtained a helper function in 'net-next' called __fl_delete() and this overlapped with Daniel Borkamann's bug fix to use RCU for object destruction in 'net'. It also overlapped with Jiri's change to guard the rhashtable_remove_fast() call with a check against tc_skip_sw(). 5) In mlx4, a revert bug fix in 'net' overlapped with some unrelated changes in 'net-next'. 6) In geneve, a stale header pointer after pskb_expand_head() bug fix in 'net' overlapped with a large reorganization of the same code in 'net-next'. Since the 'net-next' code no longer had the bug in question, there was nothing to do other than to simply take the 'net-next' hunks. Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30xfrm_user: fix return value from xfrm_user_rcv_msgYi Zhao1-1/+1
It doesn't support to run 32bit 'ip' to set xfrm objdect on 64bit host. But the return value is unknown for user program: ip xfrm policy list RTNETLINK answers: Unknown error 524 Replace ENOTSUPP with EOPNOTSUPP: ip xfrm policy list RTNETLINK answers: Operation not supported Signed-off-by: Yi Zhao <yi.zhao@windriver.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-11-18xfrm: unbreak xfrm_sk_policy_lookupFlorian Westphal1-4/+6
if we succeed grabbing the refcount, then if (err && !xfrm_pol_hold_rcu) will evaluate to false so this hits last else branch which then sets policy to ERR_PTR(0). Fixes: ae33786f73a7ce ("xfrm: policy: only use rcu in xfrm_sk_policy_lookup") Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Tested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-11-09net/flowcache: Convert to hotplug state machineSebastian Andrzej Siewior1-0/+1
Install the callbacks via the state machine. Use multi state support to avoid custom list handling for the multiple instances. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: netdev@vger.kernel.org Cc: rt@linutronix.de Cc: "David S. Miller" <davem@davemloft.net> Link: http://lkml.kernel.org/r/20161103145021.28528-10-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-28Merge branch 'master' of ↵David S. Miller1-8/+0
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== pull request (net-next): ipsec-next 2016-10-25 Just a leftover from the last development cycle. 1) Remove some unused code, from Florian Westphal. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-30xfrm: remove unused helperFlorian Westphal1-8/+0
Not used anymore since 2009 (9e0d57fd6dad37, 'xfrm: SAD entries do not expire correctly after suspend-resume'). Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-09-30proc: Reduce cache miss in xfrm_statistics_seq_showJia He1-2/+8
This is to use the generic interfaces snmp_get_cpu_field{,64}_batch to aggregate the data by going through all the items of each cpu sequentially. Signed-off-by: Jia He <hejianet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-24Merge branch 'master' of ↵David S. Miller1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== pull request (net-next): ipsec-next 2016-09-23 Only two patches this time: 1) Fix a comment reference to struct xfrm_replay_state_esn. From Richard Guy Briggs. 2) Convert xfrm_state_lookup to rcu, we don't need the xfrm_state_lock anymore in the input path. From Florian Westphal. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-3/+7
2016-09-21xfrm: state lookup can be locklessFlorian Westphal1-2/+2
This is called from the packet input path, we get lock contention if many cpus handle ipsec in parallel. After recent rcu conversion it is safe to call __xfrm_state_lookup without the spinlock. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-09-19xfrm: Fix memory leak of aead algorithm nameIlan Tayari1-0/+1
commit 1a6509d99122 ("[IPSEC]: Add support for combined mode algorithms") introduced aead. The function attach_aead kmemdup()s the algorithm name during xfrm_state_construct(). However this memory is never freed. Implementation has since been slightly modified in commit ee5c23176fcc ("xfrm: Clone states properly on migration") without resolving this leak. This patch adds a kfree() call for the aead algorithm name. Fixes: 1a6509d99122 ("[IPSEC]: Add support for combined mode algorithms") Signed-off-by: Ilan Tayari <ilant@mellanox.com> Acked-by: Rami Rosen <roszenrami@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-09-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller3-16/+15
Conflicts: drivers/net/ethernet/mediatek/mtk_eth_soc.c drivers/net/ethernet/qlogic/qed/qed_dcbx.c drivers/net/phy/Kconfig All conflicts were cases of overlapping commits. Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-10xfrm: use IS_ENABLED() instead of checking for built-in or moduleJavier Martinez Canillas1-1/+1
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-09xfrm_user: propagate sec ctx allocation errorsMathias Krause1-3/+6
When we fail to attach the security context in xfrm_state_construct() we'll return 0 as error value which, in turn, will wrongly claim success to userland when, in fact, we won't be adding / updating the XFRM state. This is a regression introduced by commit fd21150a0fe1 ("[XFRM] netlink: Inline attach_encap_tmpl(), attach_sec_ctx(), and attach_one_addr()"). Fix it by propagating the error returned by security_xfrm_state_alloc() in this case. Fixes: fd21150a0fe1 ("[XFRM] netlink: Inline attach_encap_tmpl()...") Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Thomas Graf <tgraf@suug.ch> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-09-08Merge branch 'master' of ↵David S. Miller3-105/+167
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== ipsec-next 2016-09-08 1) Constify the xfrm_replay structures. From Julia Lawall 2) Protect xfrm state hash tables with rcu, lookups can be done now without acquiring xfrm_state_lock. From Florian Westphal. 3) Protect xfrm policy hash tables with rcu, lookups can be done now without acquiring xfrm_policy_lock. From Florian Westphal. 4) We don't need to have a garbage collector list per namespace anymore, so use a global one instead. From Florian Westphal. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-07net: xfrm: Change u32 sysctl entries to use proc_douintvecsubashab@codeaurora.org1-2/+2
proc_dointvec limits the values to INT_MAX in u32 sysctl entries. proc_douintvec allows to write upto UINT_MAX. Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-24xfrm: state: remove per-netns gc taskFlorian Westphal1-9/+9
After commit 5b8ef3415a21f173 ("xfrm: Remove ancient sleeping when the SA is in acquire state") gc does not need any per-netns data anymore. As far as gc is concerned all state structs are the same, so we can use a global work struct for it. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-08-24xfrm: Fix xfrm_policy_lock imbalanceSteffen Klassert1-1/+1
An earlier patch accidentally replaced a write_lock_bh with a spin_unlock_bh. Fix this by using spin_lock_bh instead. Fixes: 9d0380df6217 ("xfrm: policy: convert policy_lock to spinlock") Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-08-12xfrm: policy: convert policy_lock to spinlockFlorian Westphal1-34/+34
After earlier patches conversions all spots acquire the writer lock and we can now convert this to a normal spinlock. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-08-12xfrm: policy: don't acquire policy lock in xfrm_spd_getinfoFlorian Westphal1-2/+0
It doesn't seem that important. We now get inconsistent view of the counters, but those are stale anyway right after we drop the lock. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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