Commit Graph

165 Commits

Author SHA1 Message Date
Nathan Chancellor ab94de8fcf This is the 3.10.108 stable release
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Merge 3.10.108 into android-msm-bullhead-3.10-oreo-m5

Changes in 3.10.108: (141 commits)
        ipvs: SNAT packet replies only for NATed connections
        net: reduce skb_warn_bad_offload() noise
        net: skb_needs_check() accepts CHECKSUM_NONE for tx
        Staging: comedi: comedi_fops: Avoid orphaned proc entry
        udp: consistently apply ufo or fragmentation
        Bluetooth: bnep: bnep_add_connection() should verify that it's dealing with l2cap socket
        Bluetooth: cmtp: cmtp_add_connection() should verify that it's dealing with l2cap socket
        tcp: introduce tcp_rto_delta_us() helper for xmit timer fix
        tcp: enable xmit timer fix by having TLP use time when RTO should fire
        tcp: fix xmit timer to only be reset if data ACKed/SACKed
        mm/page_alloc: Remove kernel address exposure in free_reserved_area()
        leak in O_DIRECT readv past the EOF
        usb: renesas_usbhs: fix the behavior of some usbhs_pkt_handle
        usb: renesas_usbhs: fix the sequence in xfer_work()
        usb: renesas_usbhs: Fix DMAC sequence for receiving zero-length packet
        fs/exec.c: account for argv/envp pointers
        rxrpc: Fix several cases where a padded len isn't checked in ticket decode
        xfrm: policy: check policy direction value
        nl80211: check for the required netlink attributes presence
        ALSA: seq: Fix use-after-free at creating a port
        MIPS: Send SIGILL for BPOSGE32 in `__compute_return_epc_for_insn'
        serial: ifx6x60: fix use-after-free on module unload
        KEYS: fix dereferencing NULL payload with nonzero length
        usb: chipidea: debug: check before accessing ci_role
        cpufreq: conservative: Allow down_threshold to take values from 1 to 10
        powerpc/kprobes: Pause function_graph tracing during jprobes handling
        staging: comedi: fix clean-up of comedi_class in comedi_init()
        brcmfmac: fix possible buffer overflow in brcmf_cfg80211_mgmt_tx()
        vt: fix unchecked __put_user() in tioclinux ioctls
        crypto: talitos - Extend max key length for SHA384/512-HMAC and AEAD
        PM / Domains: Fix unsafe iteration over modified list of device links
        powerpc/64: Fix atomic64_inc_not_zero() to return an int
        powerpc: Fix emulation of mfocrf in emulate_step()
        powerpc/asm: Mark cr0 as clobbered in mftb()
        usb: renesas_usbhs: fix usbhsc_resume() for !USBHSF_RUNTIME_PWCTRL
        MIPS: Actually decode JALX in `__compute_return_epc_for_insn'
        MIPS: Fix unaligned PC interpretation in `compute_return_epc'
        MIPS: math-emu: Prevent wrong ISA mode instruction emulation
        libata: array underflow in ata_find_dev()
        workqueue: restore WQ_UNBOUND/max_active==1 to be ordered
        ext4: fix SEEK_HOLE/SEEK_DATA for blocksize < pagesize
        ext4: fix overflow caused by missing cast in ext4_resize_fs()
        media: platform: davinci: return -EINVAL for VPFE_CMD_S_CCDC_RAW_PARAMS ioctl
        target: Avoid mappedlun symlink creation during lun shutdown
        fuse: initialize the flock flag in fuse_file on allocation
        scsi: zfcp: fix queuecommand for scsi_eh commands when DIX enabled
        scsi: zfcp: add handling for FCP_RESID_OVER to the fcp ingress path
        scsi: zfcp: fix missing trace records for early returns in TMF eh handlers
        scsi: zfcp: fix payload with full FCP_RSP IU in SCSI trace records
        scsi: zfcp: trace HBA FSF response by default on dismiss or timedout late response
        usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
        usb: renesas_usbhs: fix usbhsf_fifo_clear() for RX direction
        iommu/amd: Finish TLB flush in amd_iommu_unmap()
        direct-io: Prevent NULL pointer access in submit_page_section
        USB: serial: console: fix use-after-free after failed setup
        KEYS: don't let add_key() update an uninstantiated key
        FS-Cache: fix dereference of NULL user_key_payload
        ext4: keep existing extra fields when inode expands
        MIPS: Fix mips_atomic_set() retry condition
        KEYS: prevent creating a different user's keyrings
        KEYS: encrypted: fix dereference of NULL user_key_payload
        md/bitmap: disable bitmap_resize for file-backed bitmaps.
        lib/digsig: fix dereference of NULL user_key_payload
        netfilter: invoke synchronize_rcu after set the _hook_ to NULL
        md/raid10: submit bio directly to replacement disk
        md: fix super_offset endianness in super_1_rdev_size_change
        lib/cmdline.c: fix get_options() overflow while parsing ranges
        ext4: fix SEEK_HOLE
        net: prevent sign extension in dev_get_stats()
        kernel/extable.c: mark core_kernel_text notrace
        wext: handle NULL extra data in iwe_stream_add_point better
        netfilter: nf_ct_ext: fix possible panic after nf_ct_extend_unregister
        ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
        ext4: avoid deadlock when expanding inode size
        sctp: don't dereference ptr before leaving _sctp_walk_{params, errors}()
        sctp: fix the check for _sctp_walk_params and _sctp_walk_errors
        sctp: fully initialize the IPv6 address in sctp_v6_to_addr()
        sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
        tcp: disallow cwnd undo when switching congestion control
        netfilter: xt_TCPMSS: add more sanity tests on tcph->doff
        tcp: reset sk_rx_dst in tcp_disconnect()
        tcp: avoid setting cwnd to invalid ssthresh after cwnd reduction states
        tcp: when rearming RTO, if RTO time is in past then fire RTO ASAP
        tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0
        net/packet: check length in getsockopt() called with PACKET_HDRLEN
        net: Set sk_prot_creator when cloning sockets to the right proto
        net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs
        net: 8021q: Fix one possible panic caused by BUG_ON in free_netdev
        x86/io: Add "memory" clobber to insb/insw/insl/outsb/outsw/outsl
        kvm: async_pf: fix rcu_irq_enter() with irqs enabled
        net: ping: do not abuse udp_poll()
        scsi: qla2xxx: don't disable a not previously enabled PCI device
        drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()
        net: xilinx_emaclite: fix receive buffer overflow
        serial: efm32: Fix parity management in 'efm32_uart_console_get_options()'
        x86/mm/32: Set the '__vmalloc_start_set' flag in initmem_init()
        mfd: omap-usb-tll: Fix inverted bit use for USB TLL mode
        pvrusb2: reduce stack usage pvr2_eeprom_analyze()
        usb: r8a66597-hcd: select a different endpoint on timeout
        usb: r8a66597-hcd: decrease timeout
        drivers/misc/c2port/c2port-duramar2150.c: checking for NULL instead of IS_ERR()
        net: phy: fix marvell phy status reading
        net: korina: Fix NAPI versus resources freeing
        xfrm: NULL dereference on allocation failure
        xfrm: Oops on error in pfkey_msg2xfrm_state()
        cpufreq: s3c2416: double free on driver init error path
        KVM: x86: zero base3 of unusable segments
        KEYS: Fix an error code in request_master_key()
        ipv6: avoid unregistering inet6_dev for loopback
        cfg80211: Validate frequencies nested in NL80211_ATTR_SCAN_FREQUENCIES
        cfg80211: Check if PMKID attribute is of expected size
        mm: fix overflow check in expand_upwards()
        crypto: caam - fix signals handling
        ir-core: fix gcc-7 warning on bool arithmetic
        udf: Fix deadlock between writeback and udf_setsize()
        perf annotate: Fix broken arrow at row 0 connecting jmp instruction to its target
        net/mlx4: Remove BUG_ON from ICM allocation routine
        ipv4: initialize fib_trie prior to register_netdev_notifier call.
        workqueue: implicit ordered attribute should be overridable
        packet: fix tp_reserve race in packet_set_ring
        staging:iio:resolver:ad2s1210 fix negative IIO_ANGL_VEL read
        ALSA: core: Fix unexpected error at replacing user TLV
        ACPI / APEI: Add missing synchronize_rcu() on NOTIFY_SCI removal
        qlge: avoid memcpy buffer overflow
        ipv6: fix memory leak with multiple tables during netns destruction
        ipv6: fix typo in fib6_net_exit()
        ip6_gre: fix endianness errors in ip6gre_err
        crypto: AF_ALG - remove SGL terminator indicator when chaining
        scsi: qla2xxx: Fix an integer overflow in sysfs code
        tracing: Apply trace_clock changes to instance max buffer
        tracing: Erase irqsoff trace with empty write
        btrfs: prevent to set invalid default subvolid
        IB/ipoib: rtnl_unlock can not come after free_netdev
        team: fix memory leaks
        IB/qib: fix false-postive maybe-uninitialized warning
        KVM: nVMX: fix guest CR4 loading when emulating L2 to L1 exit
        usb: gadget: composite: Fix use-after-free in usb_composite_overwrite_options
        scsi: scsi_dh_emc: return success in clariion_std_inquiry()
        can: esd_usb2: Fix can_dlc value for received RTR, frames
        x86/apic: fix build breakage caused by incomplete backport to 3.10
        Linux 3.10.108

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
2018-01-25 17:57:49 -07:00
Dan Carpenter 04d0069630 xfrm: Oops on error in pfkey_msg2xfrm_state()
commit 1e3d0c2c70cd3edb5deed186c5f5c75f2b84a633 upstream.

There are some missing error codes here so we accidentally return NULL
instead of an error pointer.  It results in a NULL pointer dereference.

Fixes: df71837d50 ("[LSM-IPSec]: Security association restriction.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-11-02 07:16:29 +01:00
Dan Carpenter f478b4264a xfrm: NULL dereference on allocation failure
commit e747f64336fc15e1c823344942923195b800aa1e upstream.

The default error code in pfkey_msg2xfrm_state() is -ENOBUFS.  We
added a new call to security_xfrm_state_alloc() which sets "err" to zero
so there several places where we can return ERR_PTR(0) if kmalloc()
fails.  The caller is expecting error pointers so it leads to a NULL
dereference.

Fixes: df71837d50 ("[LSM-IPSec]: Security association restriction.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2017-11-02 07:16:29 +01:00
Herbert Xu 66ca8c8e99 UPSTREAM: af_key: Fix sadb_x_ipsecrequest parsing
(cherry picked from commit 096f41d3a8fcbb8dde7f71379b1ca85fe213eded)

The parsing of sadb_x_ipsecrequest is broken in a number of ways.
First of all we're not verifying sadb_x_ipsecrequest_len.  This
is needed when the structure carries addresses at the end.  Worse
we don't even look at the length when we parse those optional
addresses.

The migration code had similar parsing code that's better but
it also has some deficiencies.  The length is overcounted first
of all as it includes the header itself.  It also fails to check
the length before dereferencing the sa_family field.

This patch fixes those problems in parse_sockaddr_pair and then
uses it in parse_ipsecrequest.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Bug: 63963140
Change-Id: Ie8854131293bc8153bfb8cb255161ec8f03667f9
2017-07-24 20:50:59 +00:00
Ian Maund f1b32d4e47 Merge upstream linux-stable v3.10.28 into msm-3.10
The following commits have been reverted from this merge, as they are
known to introduce new bugs and are currently incompatible with our
audio implementation. Investigation of these commits is ongoing, and
they are expected to be brought in at a later time:

86e6de7 ALSA: compress: fix drain calls blocking other compress functions (v6)
16442d4 ALSA: compress: fix drain calls blocking other compress functions

This merge commit also includes a change in block, necessary for
compilation. Upstream has modified elevator_init_fn to prevent race
conditions, requring updates to row_init_queue and test_init_queue.

* commit 'v3.10.28': (1964 commits)
  Linux 3.10.28
  ARM: 7938/1: OMAP4/highbank: Flush L2 cache before disabling
  drm/i915: Don't grab crtc mutexes in intel_modeset_gem_init()
  serial: amba-pl011: use port lock to guard control register access
  mm: Make {,set}page_address() static inline if WANT_PAGE_VIRTUAL
  md/raid5: Fix possible confusion when multiple write errors occur.
  md/raid10: fix two bugs in handling of known-bad-blocks.
  md/raid10: fix bug when raid10 recovery fails to recover a block.
  md: fix problem when adding device to read-only array with bitmap.
  drm/i915: fix DDI PLLs HW state readout code
  nilfs2: fix segctor bug that causes file system corruption
  thp: fix copy_page_rep GPF by testing is_huge_zero_pmd once only
  ftrace/x86: Load ftrace_ops in parameter not the variable holding it
  SELinux: Fix possible NULL pointer dereference in selinux_inode_permission()
  writeback: Fix data corruption on NFS
  hwmon: (coretemp) Fix truncated name of alarm attributes
  vfs: In d_path don't call d_dname on a mount point
  staging: comedi: adl_pci9111: fix incorrect irq passed to request_irq()
  staging: comedi: addi_apci_1032: fix subdevice type/flags bug
  mm/memory-failure.c: recheck PageHuge() after hugetlb page migrate successfully
  GFS2: Increase i_writecount during gfs2_setattr_chown
  perf/x86/amd/ibs: Fix waking up from S3 for AMD family 10h
  perf scripting perl: Fix build error on Fedora 12
  ARM: 7815/1: kexec: offline non panic CPUs on Kdump panic
  Linux 3.10.27
  sched: Guarantee new group-entities always have weight
  sched: Fix hrtimer_cancel()/rq->lock deadlock
  sched: Fix cfs_bandwidth misuse of hrtimer_expires_remaining
  sched: Fix race on toggling cfs_bandwidth_used
  x86, fpu, amd: Clear exceptions in AMD FXSAVE workaround
  netfilter: nf_nat: fix access to uninitialized buffer in IRC NAT helper
  SCSI: sd: Reduce buffer size for vpd request
  intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters.
  mac80211: move "bufferable MMPDU" check to fix AP mode scan
  ACPI / Battery: Add a _BIX quirk for NEC LZ750/LS
  ACPI / TPM: fix memory leak when walking ACPI namespace
  mfd: rtsx_pcr: Disable interrupts before cancelling delayed works
  clk: exynos5250: fix sysmmu_mfc{l,r} gate clocks
  clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg clock
  clk: samsung: exynos4: Correct SRC_MFC register
  clk: clk-divider: fix divisor > 255 bug
  ahci: add PCI ID for Marvell 88SE9170 SATA controller
  parisc: Ensure full cache coherency for kmap/kunmap
  drm/nouveau/bios: make jump conditional
  ARM: shmobile: mackerel: Fix coherent DMA mask
  ARM: shmobile: armadillo: Fix coherent DMA mask
  ARM: shmobile: kzm9g: Fix coherent DMA mask
  ARM: dts: exynos5250: Fix MDMA0 clock number
  ARM: fix "bad mode in ... handler" message for undefined instructions
  ARM: fix footbridge clockevent device
  net: Loosen constraints for recalculating checksum in skb_segment()
  bridge: use spin_lock_bh() in br_multicast_set_hash_max
  netpoll: Fix missing TXQ unlock and and OOPS.
  net: llc: fix use after free in llc_ui_recvmsg
  virtio-net: fix refill races during restore
  virtio_net: don't leak memory or block when too many frags
  virtio-net: make all RX paths handle errors consistently
  virtio_net: fix error handling for mergeable buffers
  vlan: Fix header ops passthru when doing TX VLAN offload.
  net: rose: restore old recvmsg behavior
  rds: prevent dereference of a NULL device
  ipv6: always set the new created dst's from in ip6_rt_copy
  net: fec: fix potential use after free
  hamradio/yam: fix info leak in ioctl
  drivers/net/hamradio: Integer overflow in hdlcdrv_ioctl()
  net: inet_diag: zero out uninitialized idiag_{src,dst} fields
  ip_gre: fix msg_name parsing for recvfrom/recvmsg
  net: unix: allow bind to fail on mutex lock
  ipv6: fix illegal mac_header comparison on 32bit
  netvsc: don't flush peers notifying work during setting mtu
  tg3: Initialize REG_BASE_ADDR at PCI config offset 120 to 0
  net: unix: allow set_peek_off to fail
  net: drop_monitor: fix the value of maxattr
  ipv6: don't count addrconf generated routes against gc limit
  packet: fix send path when running with proto == 0
  virtio: delete napi structures from netdev before releasing memory
  macvtap: signal truncated packets
  tun: update file current position
  macvtap: update file current position
  macvtap: Do not double-count received packets
  rds: prevent BUG_ON triggered on congestion update to loopback
  net: do not pretend FRAGLIST support
  IPv6: Fixed support for blackhole and prohibit routes
  HID: Revert "Revert "HID: Fix logitech-dj: missing Unifying device issue""
  gpio-rcar: R-Car GPIO IRQ share interrupt
  clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast
  irqchip: renesas-irqc: Fix irqc_probe error handling
  Linux 3.10.26
  sh: add EXPORT_SYMBOL(min_low_pfn) and EXPORT_SYMBOL(max_low_pfn) to sh_ksyms_32.c
  ext4: fix bigalloc regression
  arm64: Use Normal NonCacheable memory for writecombine
  arm64: Do not flush the D-cache for anonymous pages
  arm64: Avoid cache flushing in flush_dcache_page()
  ARM: KVM: arch_timers: zero CNTVOFF upon return to host
  ARM: hyp: initialize CNTVOFF to zero
  clocksource: arch_timer: use virtual counters
  arm64: Remove unused cpu_name ascii in arch/arm64/mm/proc.S
  arm64: dts: Reserve the memory used for secondary CPU release address
  arm64: check for number of arguments in syscall_get/set_arguments()
  arm64: fix possible invalid FPSIMD initialization state
  ...

Change-Id: Ia0e5d71b536ab49ec3a1179d59238c05bdd03106
Signed-off-by: Ian Maund <imaund@codeaurora.org>
2014-03-24 14:28:34 -07:00
Hannes Frederic Sowa 2f73d7fde9 net: rework recvmsg handler msg_name and msg_namelen logic
[ Upstream commit f3d3342602f8bcbf37d7c46641cb9bca7618eb1c ]

This patch now always passes msg->msg_namelen as 0. recvmsg handlers must
set msg_namelen to the proper size <= sizeof(struct sockaddr_storage)
to return msg_name to the user.

This prevents numerous uninitialized memory leaks we had in the
recvmsg handlers and makes it harder for new code to accidentally leak
uninitialized memory.

Optimize for the case recvfrom is called with NULL as address. We don't
need to copy the address at all, so set it to NULL before invoking the
recvmsg handler. We can do so, because all the recvmsg handlers must
cope with the case a plain read() is called on them. read() also sets
msg_name to NULL.

Also document these changes in include/linux/net.h as suggested by David
Miller.

Changes since RFC:

Set msg->msg_name = NULL if user specified a NULL in msg_name but had a
non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
affect sendto as it would bail out earlier while trying to copy-in the
address. It also more naturally reflects the logic by the callers of
verify_iovec.

With this change in place I could remove "
if (!uaddr || msg_sys->msg_namelen == 0)
	msg->msg_name = NULL
".

This change does not alter the user visible error logic as we ignore
msg_namelen as long as msg_name is NULL.

Also remove two unnecessary curly brackets in ___sys_recvmsg and change
comments to netdev style.

Cc: David Miller <davem@davemloft.net>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 07:29:25 -08:00
Syed Rameez Mustafa 3994d4e010 net: change error print messages to generate warnings
Given the numerous clients of sockets, it is difficult to find the
offending client for the error that is being reported. Change the
kernel print messages to generate a warning instead so that we get
a complete call stack.

Change-Id: I4bfce3e0a5aecd88c6fa4a1f900482449a4b868d
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
2013-10-04 19:08:13 -07:00
Dan Carpenter 6d60b44087 af_key: more info leaks in pfkey messages
[ Upstream commit ff862a4668dd6dba962b1d2d8bd344afa6375683 ]

This is inspired by a5cc68f3d6 "af_key: fix info leaks in notify
messages".  There are some struct members which don't get initialized
and could disclose small amounts of private information.

Acked-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-11 18:35:25 -07:00
Mathias Krause a5cc68f3d6 af_key: fix info leaks in notify messages
key_notify_sa_flush() and key_notify_policy_flush() miss to initialize
the sadb_msg_reserved member of the broadcasted message and thereby
leak 2 bytes of heap memory to listeners. Fix that.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-26 15:15:54 -07:00
Paul Moore e4c1721642 xfrm: force a garbage collection after deleting a policy
In some cases after deleting a policy from the SPD the policy would
remain in the dst/flow/route cache for an extended period of time
which caused problems for SELinux as its dynamic network access
controls key off of the number of XFRM policy and state entries.
This patch corrects this problem by forcing a XFRM garbage collection
whenever a policy is sucessfully removed.

Reported-by: Ondrej Moris <omoris@redhat.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-31 17:30:07 -07:00
David S. Miller 0fb031f036 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:

====================
1) Initialize the satype field in key_notify_policy_flush(),
   this was left uninitialized. From Nicolas Dichtel.

2) The sequence number difference for replay notifications
   was misscalculated on ESN sequence number wrap. We need
   a separate replay notify function for esn.

3) Fix an off by one in the esn replay notify function.
   From Mathias Krause.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-27 14:07:04 -04:00
Junwei Zhang d0d79c3fd7 afkey: fix a typo
Signed-off-by: Martin Zhang <martinbj2008@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-07 16:26:45 -05:00
Sasha Levin b67bfe0d42 hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived

        list_for_each_entry(pos, head, member)

The hlist ones were greedy and wanted an extra parameter:

        hlist_for_each_entry(tpos, pos, head, member)

Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.

Besides the semantic patch, there was some manual work required:

 - Fix up the actual hlist iterators in linux/list.h
 - Fix up the declaration of other iterators based on the hlist ones.
 - A very small amount of places were using the 'node' parameter, this
 was modified to use 'obj->member' instead.
 - Coccinelle didn't handle the hlist_for_each_entry_safe iterator
 properly, so those had to be fixed up manually.

The semantic patch which is mostly the work of Peter Senna Tschudin is here:

@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;

type T;
expression a,c,d,e;
identifier b;
statement S;
@@

-T b;
    <+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
    ...+>

[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:24 -08:00
Nicolas Dichtel 85dfb745ee af_key: initialize satype in key_notify_policy_flush()
This field was left uninitialized. Some user daemons perform check against this
field.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2013-02-21 07:14:38 +01:00
Gao feng ece31ffd53 net: proc: change proc_net_remove to remove_proc_entry
proc_net_remove is only used to remove proc entries
that under /proc/net,it's not a general function for
removing proc entries of netns. if we want to remove
some proc entries which under /proc/net/stat/, we still
need to call remove_proc_entry.

this patch use remove_proc_entry to replace proc_net_remove.
we can remove proc_net_remove after this patch.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-18 14:53:08 -05:00
Gao feng d4beaa66ad net: proc: change proc_net_fops_create to proc_create
Right now, some modules such as bonding use proc_create
to create proc entries under /proc/net/, and other modules
such as ipv4 use proc_net_fops_create.

It looks a little chaos.this patch changes all of
proc_net_fops_create to proc_create. we can remove
proc_net_fops_create after this patch.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-18 14:53:08 -05:00
David S. Miller e0376d0043 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:

====================
1) Remove a duplicated call to skb_orphan() in pf_key, from Cong Wang.

2) Prepare xfrm and pf_key for algorithms without pf_key support,
   from Jussi Kivilinna.

3) Fix an unbalanced lock in xfrm_output_one(), from Li RongQing.

4) Add an IPsec state resolution packet queue to handle
   packets that are send before the states are resolved.

5) xfrm4_policy_fini() is unused since 2.6.11, time to remove it.
   From Michal Kubecek.

6) The xfrm gc threshold was configurable just in the initial
   namespace, make it configurable in all namespaces. From
   Michal Kubecek.

7) We currently can not insert policies with mark and mask
   such that some flows would be matched from both policies.
   Allow this if the priorities of these policies are different,
   the one with the higher priority is used in this case.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-14 13:29:20 -05:00
Jussi Kivilinna 7e50f84c94 pf_key/xfrm_algo: prepare pf_key and xfrm_algo for new algorithms without pfkey support
Mark existing algorithms as pfkey supported and make pfkey only use algorithms
that have pfkey_supported set.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2013-02-01 10:13:43 +01:00
YOSHIFUJI Hideaki / 吉藤英明 70e94e66ae xfrm: Convert xfrm_addr_cmp() to boolean xfrm_addr_equal().
All users of xfrm_addr_cmp() use its result as boolean.
Introduce xfrm_addr_equal() (which is equal to !xfrm_addr_cmp())
and convert all users.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-29 22:58:40 -05:00
Cong Wang cdfa1fe5c0 af_key: remove a duplicated skb_orphan()
skb_set_owner_r() will call skb_orphan(), I don't
see any reason to call it twice.

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: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2013-01-28 09:22:12 +01:00
Eric W. Biederman df008c91f8 net: Allow userns root to control llc, netfilter, netlink, packet, and xfrm
Allow an unpriviled user who has created a user namespace, and then
created a network namespace to effectively use the new network
namespace, by reducing capable(CAP_NET_ADMIN) and
capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns,
CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls.

Allow creation of af_key sockets.
Allow creation of llc sockets.
Allow creation of af_packet sockets.

Allow sending xfrm netlink control messages.

Allow binding to netlink multicast groups.
Allow sending to netlink multicast groups.
Allow adding and dropping netlink multicast groups.
Allow sending to all netlink multicast groups and port ids.

Allow reading the netfilter SO_IP_SET socket option.
Allow sending netfilter netlink messages.
Allow setting and getting ip_vs netfilter socket options.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18 20:32:45 -05:00
Dan Carpenter f674e72ff1 net/key/af_key.c: add range checks on ->sadb_x_policy_len
Because sizeof() is size_t then if "len" is negative, it counts as a
large positive value.

The call tree looks like:
pfkey_sendmsg()
-> pfkey_process()
   -> pfkey_spdadd()
      -> parse_ipsecrequests()

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-01 17:15:06 -04:00
Eric W. Biederman 15e473046c netlink: Rename pid to portid to avoid confusion
It is a frequent mistake to confuse the netlink port identifier with a
process identifier.  Try to reduce this confusion by renaming fields
that hold port identifiers portid instead of pid.

I have carefully avoided changing the structures exported to
userspace to avoid changing the userspace API.

I have successfully built an allyesconfig kernel with this change.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-10 15:30:41 -04:00
David S. Miller e6acb38480 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
This is an initial merge in of Eric Biederman's work to start adding
user namespace support to the networking.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-24 18:54:37 -04:00
Fan Du 65e0736bc2 xfrm: remove redundant parameter "int dir" in struct xfrm_mgr.acquire
Sematically speaking, xfrm_mgr.acquire is called when kernel intends to ask
user space IKE daemon to negotiate SAs with peers. IOW the direction will
*always* be XFRM_POLICY_OUT, so remove int dir for clarity.

Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-15 15:13:30 -07:00
Eric W. Biederman a7cb5a49bf userns: Print out socket uids in a user namespace aware fashion.
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>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2012-08-14 21:48:06 -07:00
Eric Dumazet 95c9617472 net: cleanup unsigned to unsigned int
Use of "unsigned int" is preferred to bare "unsigned" in net tree.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-15 12:44:40 -04:00
Julia Lawall 89eb06f11c net/key/af_key.c: add missing kfree_skb
At the point of this error-handling code, alloc_skb has succeded, so free
the resulting skb by jumping to the err label.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13 11:01:44 -04:00
Eric Dumazet dfd56b8b38 net: use IS_ENABLED(CONFIG_IPV6)
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>
2011-12-11 18:25:16 -05:00
Alexey Dobriyan 4e3fd7a06d net: remove ipv6_addr_copy()
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>
2011-11-22 16:43:32 -05:00
Joe Perches ea11073387 net: Remove casts of void *
Unnecessary casts of void * clutter the code.

These are the remainder casts after several specific
patches to remove netdev_priv and dev_priv.

Done via coccinelle script:

$ cat cast_void_pointer.cocci
@@
type T;
T *pt;
void *pv;
@@

- pt = (T *)pv;
+ pt = pv;

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:19:27 -04:00
Dan Rosenberg 71338aa7d0 net: convert %p usage to %pK
The %pK format specifier is designed to hide exposed kernel pointers,
specifically via /proc interfaces.  Exposing these pointers provides an
easy target for kernel write vulnerabilities, since they reveal the
locations of writable structures containing easily triggerable function
pointers.  The behavior of %pK depends on the kptr_restrict sysctl.

If kptr_restrict is set to 0, no deviation from the standard %p behavior
occurs.  If kptr_restrict is set to 1, the default, if the current user
(intended to be a reader via seq_printf(), etc.) does not have CAP_SYSLOG
(currently in the LSM tree), kernel pointers using %pK are printed as 0's.
 If kptr_restrict is set to 2, kernel pointers using %pK are printed as
0's regardless of privileges.  Replacing with 0's was chosen over the
default "(null)", which cannot be parsed by userland %p, which expects
"(nil)".

The supporting code for kptr_restrict and %pK are currently in the -mm
tree.  This patch converts users of %p in net/ to %pK.  Cases of printing
pointers to the syslog are not covered, since this would eliminate useful
information for postmortem debugging and the reading of the syslog is
already optionally protected by the dmesg_restrict sysctl.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: James Morris <jmorris@namei.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Thomas Graf <tgraf@infradead.org>
Cc: Eugene Teo <eugeneteo@kernel.org>
Cc: Kees Cook <kees.cook@canonical.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Eric Paris <eparis@parisplace.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-24 01:13:12 -04:00
Eric Dumazet b71d1d426d inet: constify ip headers and in6_addr
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>
2011-04-22 11:04:14 -07:00
Stephen Hemminger 7f6daa635c pfkey: fix warning
If CONFIG_NET_KEY_MIGRATE is not defined the arguments of
pfkey_migrate stub do not match causing warning.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-01 22:51:52 -08:00
David S. Miller 4c93fbb062 pfkey: Use const where possible.
This actually pointed out a (seemingly known) bug where we mangle the
pfkey header in a potentially shared SKB, which is fixed here.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-25 18:07:06 -08:00
David S. Miller 183cad1278 xfrm: Const'ify pointer args to km_migrate() and implementations.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:41 -08:00
David S. Miller 214e005bc3 xfrm: Pass km_event pointers around as const when possible.
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 23:07:37 -08:00
stephen hemminger ada440e3b5 afkey: add sparse annotation about rcu
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-23 14:11:32 -08:00
Eric Dumazet a02cec2155 net: return operator cleanup
Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-23 14:33:39 -07:00
stephen hemminger 207024b947 pfkey: add severity to printk
Put severity level on pfkey printk messages

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17 23:23:13 -07:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Dan Carpenter 9a127aad4d af_key: return error if pfkey_xfrm_policy2msg_prep() fails
The original code saved the error value but just returned 0 in the end.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Jamal Hadi Salim <hadi@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-24 13:28:27 -07:00
Jamal Hadi Salim 8ca2e93b55 xfrm: SP lookups signature with mark
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>
2010-02-22 16:21:12 -08:00
Jamal Hadi Salim bd55775c8d xfrm: SA lookups signature with mark
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>
2010-02-22 16:20:22 -08:00
stephen hemminger 7f6b9dbd5a af_key: locking change
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>
2010-02-22 15:45:56 -08:00
Jamal Hadi Salim 2f1eb65f36 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 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>
2010-02-19 13:11:50 -08:00
Jamal Hadi Salim 9e64cc9572 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 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>
2010-02-19 13:11:50 -08:00
Jamal Hadi Salim 8be987d734 pfkey: fix SA and SP flush sequence
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>
2010-02-19 13:11:49 -08:00
David S. Miller 069c474e88 xfrm: Revert false event eliding commits.
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>
2010-02-17 13:41:40 -08:00
jamal 0dca3a8436 xfrm: Flushing empty SPD generates false events
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>
2010-02-15 21:49:50 -08:00