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We need to use the _sync() version for cancelling the info and security
timer in the L2CAP connection delete path. Otherwise the delayed work
handler might run after the connection object is freed.
Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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__cancel_delayed_work() is being used in some paths where we cannot
sleep waiting for the delayed work to finish. However, that function
might return while the timer is running and the work will be queued
again. Replace the calls with safer cancel_delayed_work() version
which spins until the timer handler finishes on other CPUs and
cancels the delayed work.
Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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We should only perform a reset in hci_dev_do_close if the
HCI_QUIRK_NO_RESET flag is set (since in such a case a reset will not be
performed when initializing the device).
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
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There is an imbalance in the rfcomm_session_hold / rfcomm_session_put
operations which causes the following crash:
[ 685.010159] BUG: unable to handle kernel paging request at 6b6b6b6b
[ 685.010169] IP: [<c149d76d>] rfcomm_process_dlcs+0x1b/0x15e
[ 685.010181] *pdpt = 000000002d665001 *pde = 0000000000000000
[ 685.010191] Oops: 0000 [#1] PREEMPT SMP
[ 685.010247]
[ 685.010255] Pid: 947, comm: krfcommd Tainted: G C 3.0.16-mid8-dirty #44
[ 685.010266] EIP: 0060:[<c149d76d>] EFLAGS: 00010246 CPU: 1
[ 685.010274] EIP is at rfcomm_process_dlcs+0x1b/0x15e
[ 685.010281] EAX: e79f551c EBX: 6b6b6b6b ECX: 00000007 EDX: e79f40b4
[ 685.010288] ESI: e79f4060 EDI: ed4e1f70 EBP: ed4e1f68 ESP: ed4e1f50
[ 685.010295] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 685.010303] Process krfcommd (pid: 947, ti=ed4e0000 task=ed43e5e0 task.ti=ed4e0000)
[ 685.010308] Stack:
[ 685.010312] ed4e1f68 c149eb53 e5925150 e79f4060 ed500000 ed4e1f70 ed4e1f80 c149ec10
[ 685.010331] 00000000 ed43e5e0 00000000 ed4e1f90 ed4e1f9c c149ec87 0000bf54 00000000
[ 685.010348] 00000000 ee03bf54 c149ec37 ed4e1fe4 c104fe01 00000000 00000000 00000000
[ 685.010367] Call Trace:
[ 685.010376] [<c149eb53>] ? rfcomm_process_rx+0x6e/0x74
[ 685.010387] [<c149ec10>] rfcomm_process_sessions+0xb7/0xde
[ 685.010398] [<c149ec87>] rfcomm_run+0x50/0x6d
[ 685.010409] [<c149ec37>] ? rfcomm_process_sessions+0xde/0xde
[ 685.010419] [<c104fe01>] kthread+0x63/0x68
[ 685.010431] [<c104fd9e>] ? __init_kthread_worker+0x42/0x42
[ 685.010442] [<c14dae82>] kernel_thread_helper+0x6/0xd
This issue has been brought up earlier here:
https://lkml.org/lkml/2011/5/21/127
The issue appears to be the rfcomm_session_put in rfcomm_recv_ua. This
operation doesn't seem be to required as for the non-initiator case we
have the rfcomm_process_rx doing an explicit put and in the initiator
case the last dlc_unlink will drive the reference counter to 0.
There have been several attempts to fix these issue:
6c2718d Bluetooth: Do not call rfcomm_session_put() for RFCOMM UA on closed socket
683d949 Bluetooth: Never deallocate a session when some DLC points to it
but AFAICS they do not fix the issue just make it harder to reproduce.
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Gopala Krishna Murala <gopala.krishna.murala@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Since bluetooth uses multiple protocols types, to avoid lockdep
warnings, we need to use different lockdep classes (one for each
protocol type).
This is already done in bt_sock_create but it misses a couple of cases
when new connections are created. This patch corrects that to fix the
following warning:
<4>[ 1864.732366] =======================================================
<4>[ 1864.733030] [ INFO: possible circular locking dependency detected ]
<4>[ 1864.733544] 3.0.16-mid3-00007-gc9a0f62 #3
<4>[ 1864.733883] -------------------------------------------------------
<4>[ 1864.734408] t.android.btclc/4204 is trying to acquire lock:
<4>[ 1864.734869] (rfcomm_mutex){+.+.+.}, at: [<c14970ea>] rfcomm_dlc_close+0x15/0x30
<4>[ 1864.735541]
<4>[ 1864.735549] but task is already holding lock:
<4>[ 1864.736045] (sk_lock-AF_BLUETOOTH){+.+.+.}, at: [<c1498bf7>] lock_sock+0xa/0xc
<4>[ 1864.736732]
<4>[ 1864.736740] which lock already depends on the new lock.
<4>[ 1864.736750]
<4>[ 1864.737428]
<4>[ 1864.737437] the existing dependency chain (in reverse order) is:
<4>[ 1864.738016]
<4>[ 1864.738023] -> #1 (sk_lock-AF_BLUETOOTH){+.+.+.}:
<4>[ 1864.738549] [<c1062273>] lock_acquire+0x104/0x140
<4>[ 1864.738977] [<c13d35c1>] lock_sock_nested+0x58/0x68
<4>[ 1864.739411] [<c1493c33>] l2cap_sock_sendmsg+0x3e/0x76
<4>[ 1864.739858] [<c13d06c3>] __sock_sendmsg+0x50/0x59
<4>[ 1864.740279] [<c13d0ea2>] sock_sendmsg+0x94/0xa8
<4>[ 1864.740687] [<c13d0ede>] kernel_sendmsg+0x28/0x37
<4>[ 1864.741106] [<c14969ca>] rfcomm_send_frame+0x30/0x38
<4>[ 1864.741542] [<c1496a2a>] rfcomm_send_ua+0x58/0x5a
<4>[ 1864.741959] [<c1498447>] rfcomm_run+0x441/0xb52
<4>[ 1864.742365] [<c104f095>] kthread+0x63/0x68
<4>[ 1864.742742] [<c14d5182>] kernel_thread_helper+0x6/0xd
<4>[ 1864.743187]
<4>[ 1864.743193] -> #0 (rfcomm_mutex){+.+.+.}:
<4>[ 1864.743667] [<c1061ada>] __lock_acquire+0x988/0xc00
<4>[ 1864.744100] [<c1062273>] lock_acquire+0x104/0x140
<4>[ 1864.744519] [<c14d2c70>] __mutex_lock_common+0x3b/0x33f
<4>[ 1864.744975] [<c14d303e>] mutex_lock_nested+0x2d/0x36
<4>[ 1864.745412] [<c14970ea>] rfcomm_dlc_close+0x15/0x30
<4>[ 1864.745842] [<c14990d9>] __rfcomm_sock_close+0x5f/0x6b
<4>[ 1864.746288] [<c1499114>] rfcomm_sock_shutdown+0x2f/0x62
<4>[ 1864.746737] [<c13d275d>] sys_socketcall+0x1db/0x422
<4>[ 1864.747165] [<c14d42f0>] syscall_call+0x7/0xb
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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After moving L2CAP timers to workqueues l2cap_set_timer expects timeout
value to be specified in jiffies but constants defined in miliseconds
are used. This makes timeouts unreliable when CONFIG_HZ is not set to
1000.
__set_chan_timer macro still uses jiffies as input to avoid multiple
conversions from/to jiffies for sk_sndtimeo value which is already
specified in jiffies.
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Ackec-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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sk_sndtime value should be specified in jiffies thus initial value
needs to be converted from miliseconds. Otherwise this timeout is
unreliable when CONFIG_HZ is not set to 1000.
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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As reported by Dan Carpenter this function causes a Sparse warning and
shouldn't be declared inline:
include/net/bluetooth/l2cap.h:837:30 error: marked inline, but without a
definition"
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
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Commit 330605423c fixed l2cap conn establishment for non-ssp remote
devices by not setting HCI_CONN_ENCRYPT_PEND every time conn security
is tested (which was always returning failure on any subsequent
security checks).
However, this broke l2cap conn establishment for ssp remote devices
when an ACL link was already established at SDP-level security. This
fix ensures that encryption must be pending whenever authentication
is also pending.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Tested-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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commit 5a698af53f (bond: service netpoll arp queue on master device)
tested IFF_SLAVE flag against dev->priv_flags instead of dev->flags
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: WANG Cong <amwang@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The first parameter should be "number of elements" and the second parameter
should be "element size".
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit ensures that lost_cnt_hint is correctly updated in
tcp_shifted_skb() for FACK TCP senders. The lost_cnt_hint adjustment
in tcp_sacktag_one() only applies to non-FACK senders, so FACK senders
need their own adjustment.
This applies the spirit of 1e5289e121372a3494402b1b131b41bfe1cf9b7f -
except now that the sequence range passed into tcp_sacktag_one() is
correct we need only have a special case adjustment for FACK.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the number of dentry cache hash table entries gets too high
(2147483648 entries), as happens by default on a 16TB system, use of a
signed integer in the dcache_init() initialization loop prevents the
dentry_hashtable from getting initialized, causing a panic in
__d_lookup(). Fix this in dcache_init() and similar areas.
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Fix the newly-SACKed range to be the range of newly-shifted bytes.
Previously - since 832d11c5cd076abc0aa1eaf7be96c81d1a59ce41 -
tcp_shifted_skb() incorrectly called tcp_sacktag_one() with the start
and end sequence numbers of the skb it passes in set to the range just
beyond the range that is newly-SACKed.
This commit also removes a special-case adjustment to lost_cnt_hint in
tcp_shifted_skb() since the pre-existing adjustment of lost_cnt_hint
in tcp_sacktag_one() now properly handles this things now that the
correct start sequence number is passed in.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit allows callers of tcp_sacktag_one() to pass in sequence
ranges that do not align with skb boundaries, as tcp_shifted_skb()
needs to do in an upcoming fix in this patch series.
In fact, now tcp_sacktag_one() does not need to depend on an input skb
at all, which makes its semantics and dependencies more clear.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Quoth David:
1) GRO MAC header comparisons were ethernet specific, breaking other
link types. This required a multi-faceted fix to cure the originally
noted case (Infiniband), because IPoIB was lying about it's actual
hard header length. Thanks to Eric Dumazet, Roland Dreier, and
others.
2) Fix build failure when INET_UDP_DIAG is built in and ipv6 is modular.
From Anisse Astier.
3) Off by ones and other bug fixes in netprio_cgroup from Neil Horman.
4) ipv4 TCP reset generation needs to respect any network interface
binding from the socket, otherwise route lookups might give a
different result than all the other segments received. From Shawn
Lu.
5) Fix unintended regression in ipv4 proxy ARP responses, from Thomas
Graf.
6) Fix SKB under-allocation bug in sh_eth, from Yoshihiro Shimoda.
7) Revert skge PCI mapping changes that are causing crashes for some
folks, from Stephen Hemminger.
8) IPV4 route lookups fill in the wildcarded fields of the given flow
lookup key passed in, which is fine most of the time as this is
exactly what the caller's want. However there are a few cases that
want to retain the original flow key values afterwards, so handle
those cases properly. Fix from Julian Anastasov.
9) IGB/IXGBE VF lookup bug fixes from Greg Rose.
10) Properly null terminate filename passed to ethtool flash device
method, from Ben Hutchings.
11) S3 resume fix in via-velocity from David Lv.
12) Fix double SKB free during xmit failure in CAIF, from Dmitry
Tarnyagin.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (72 commits)
net: Don't proxy arp respond if iif == rt->dst.dev if private VLAN is disabled
ipv4: Fix wrong order of ip_rt_get_source() and update iph->daddr.
netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m
netprio_cgroup: don't allocate prio table when a device is registered
netprio_cgroup: fix an off-by-one bug
bna: fix error handling of bnad_get_flash_partition_by_offset()
isdn: type bug in isdn_net_header()
net: Make qdisc_skb_cb upper size bound explicit.
ixgbe: ethtool: stats user buffer overrun
ixgbe: dcb: up2tc mapping lost on disable/enable CEE DCB state
ixgbe: do not update real num queues when netdev is going away
ixgbe: Fix broken dependency on MAX_SKB_FRAGS being related to page size
ixgbe: Fix case of Tx Hang in PF with 32 VFs
ixgbe: fix vf lookup
igb: fix vf lookup
e1000: add dropped DMA receive enable back in for WoL
gro: more generic L2 header check
IPoIB: Stop lying about hard_header_len and use skb->cb to stash LL addresses
zd1211rw: firmware needs duration_id set to zero for non-pspoll frames
net: enable TC35815 for MIPS again
...
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Commit 653241 (net: RFC3069, private VLAN proxy arp support) changed
the behavior of arp proxy to send arp replies back out on the interface
the request came in even if the private VLAN feature is disabled.
Previously we checked rt->dst.dev != skb->dev for in scenarios, when
proxy arp is enabled on for the netdevice and also when individual proxy
neighbour entries have been added.
This patch adds the check back for the pneigh_lookup() scenario.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fix a bug which introduced by commit ac8a4810 (ipv4: Save
nexthop address of LSRR/SSRR option to IPCB.).In that patch, we saved
the nexthop of SRR in ip_option->nexthop and update iph->daddr until
we get to ip_forward_options(), but we need to update it before
ip_rt_get_source(), otherwise we may get a wrong src.
Signed-off-by: Li Wei <lw@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the netprio_cgroup module is not loaded, net_prio_subsys_id
is -1, and so sock_update_prioidx() accesses cgroup_subsys array
with negative index subsys[-1].
Make the code resembles cls_cgroup code, which is bug free.
Origionally-authored-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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So we delay the allocation till the priority is set through cgroup,
and this makes skb_update_priority() faster when it's not set.
This also eliminates an off-by-one bug similar with the one fixed
in the previous patch.
Origionally-authored-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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# mount -t cgroup xxx /mnt
# mkdir /mnt/tmp
# cat /mnt/tmp/net_prio.ifpriomap
lo 0
eth0 0
virbr0 0
# echo 'lo 999' > /mnt/tmp/net_prio.ifpriomap
# cat /mnt/tmp/net_prio.ifpriomap
lo 999
eth0 0
virbr0 4101267344
We got weired output, because we exceeded the boundary of the array.
We may even crash the kernel..
Origionally-authored-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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read_lock(&tpt_trig->trig.leddev_list_lock) is accessed via the path
ieee80211_open (->) ieee80211_do_open (->) ieee80211_mod_tpt_led_trig
(->) ieee80211_start_tpt_led_trig (->) tpt_trig_timer before initializing
it.
the intilization of this read/write lock happens via the path
ieee80211_led_init (->) led_trigger_register, but we are doing
'ieee80211_led_init' after 'ieeee80211_if_add' where we
register netdev_ops.
so we access leddev_list_lock before initializing it and causes the
following bug in chrome laptops with AR928X cards with the following
script
while true
do
sudo modprobe -v ath9k
sleep 3
sudo modprobe -r ath9k
sleep 3
done
BUG: rwlock bad magic on CPU#1, wpa_supplicant/358, f5b9eccc
Pid: 358, comm: wpa_supplicant Not tainted 3.0.13 #1
Call Trace:
[<8137b9df>] rwlock_bug+0x3d/0x47
[<81179830>] do_raw_read_lock+0x19/0x29
[<8137f063>] _raw_read_lock+0xd/0xf
[<f9081957>] tpt_trig_timer+0xc3/0x145 [mac80211]
[<f9081f3a>] ieee80211_mod_tpt_led_trig+0x152/0x174 [mac80211]
[<f9076a3f>] ieee80211_do_open+0x11e/0x42e [mac80211]
[<f9075390>] ? ieee80211_check_concurrent_iface+0x26/0x13c [mac80211]
[<f9076d97>] ieee80211_open+0x48/0x4c [mac80211]
[<812dbed8>] __dev_open+0x82/0xab
[<812dc0c9>] __dev_change_flags+0x9c/0x113
[<812dc1ae>] dev_change_flags+0x18/0x44
[<8132144f>] devinet_ioctl+0x243/0x51a
[<81321ba9>] inet_ioctl+0x93/0xac
[<812cc951>] sock_ioctl+0x1c6/0x1ea
[<812cc78b>] ? might_fault+0x20/0x20
[<810b1ebb>] do_vfs_ioctl+0x46e/0x4a2
[<810a6ebb>] ? fget_light+0x2f/0x70
[<812ce549>] ? sys_recvmsg+0x3e/0x48
[<810b1f35>] sys_ioctl+0x46/0x69
[<8137fa77>] sysenter_do_call+0x12/0x2
Cc: <stable@vger.kernel.org>
Cc: Gary Morain <gmorain@google.com>
Cc: Paul Stewart <pstew@google.com>
Cc: Abhijit Pradhan <abhijit@qca.qualcomm.com>
Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Acked-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When trying to nf_queue GRO/GSO skbs, nf_queue uses skb_gso_segment
to split the skb.
However, if nf_queue is called via bridge netfilter, the mac header
won't be preserved -- packets will thus contain a bogus mac header.
Fix this by setting skb->data to the mac header when skb->nf_bridge
is set and restoring skb->data afterwards for all segments.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Just like skb->cb[], so that qdisc_skb_cb can be encapsulated inside
of other data structures.
This is intended to be used by IPoIB so that it can remember
addressing information stored at hard_header_ops->create() time that
it can fetch when the packet gets to the transmit routine.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Shlomo Pongratz reported GRO L2 header check was suited for Ethernet
only, and failed on IB/ipoib traffic.
He provided a patch faking a zeroed header to let GRO aggregates frames.
Roland Dreier, Herbert Xu, and others suggested we change GRO L2 header
check to be more generic, ie not assuming L2 header is 14 bytes, but
taking into account hard_header_len.
__napi_gro_receive() has special handling for the common case (Ethernet)
to avoid a memcmp() call and use an inline optimized function instead.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Shlomo Pongratz <shlomop@mellanox.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Tested-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Binding RST packet outgoing interface to incoming interface
for tcp v4 when there is no socket associate with it.
when sk is not NULL, using sk->sk_bound_dev_if instead.
(suggested by Eric Dumazet).
This has few benefits:
1. tcp_v6_send_reset already did that.
2. This helps tcp connect with SO_BINDTODEVICE set. When
connection is lost, we still able to sending out RST using
same interface.
3. we are sending reply, it is most likely to be succeed
if iif is used
Signed-off-by: Shawn Lu <shawn.lu@ericsson.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It was recently pointed out to me that the get_prioidx function sets a bit in
the prioidx map prior to checking to see if the index being set is out of
bounds. This patch corrects that, avoiding the possiblity of us writing beyond
the end of the array
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
CC: Stanislaw Gruszka <sgruszka@redhat.com>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit f11017ec2d1859c661f4e2b12c4a8d250e1f47cf (2.6.37)
moved the fwmark variable in subcontext that is invalidated before
reaching the ip_vs_ct_in_get call. As vaddr is provided as pointer
in the param structure make sure the fwmark variable is in
same context. As the fwmark templates can not be matched,
more and more template connections are created and the
controlled connections can not go to single real server.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Cc: stable@vger.kernel.org
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
rbd: fix safety of rbd_put_client()
rbd: fix a memory leak in rbd_get_client()
ceph: create a new session lock to avoid lock inversion
ceph: fix length validation in parse_reply_info()
ceph: initialize client debugfs outside of monc->mutex
ceph: change "ceph.layout" xattr to be "ceph.file.layout"
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Initializing debufs under monc->mutex introduces a lock dependency for
sb->s_type->i_mutex_key, which (combined with several other dependencies)
leads to an annoying lockdep warning. There's no particular reason to do
the debugfs setup under this lock, so move it out.
It used to be the case that our first monmap could come from the OSD; that
is no longer the case with recent servers, so we will reliably set up the
client entry during the initial authentication.
We don't have to worry about racing with debugfs teardown by
ceph_debugfs_client_cleanup() because ceph_destroy_client() calls
ceph_msgr_flush() first, which will wait for the message dispatch work
to complete (and the debugfs init to complete).
Fixes: #1940
Signed-off-by: Sage Weil <sage@newdream.net>
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SKB is freed twice upon send error. The Network stack consumes SKB even
when it returns error code.
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Always use cfmuxl_remove_uplayer when removing a up-layer.
cfmuxl_ctrlcmd() can be called independently and in parallel with
cfmuxl_remove_uplayer(). The race between them could cause list_del_rcu
to be called on a node which has been already taken out from the list.
That lead to a (rare) crash on accessing poisoned node->prev inside
list_del_rcu.
This fix ensures that deletion are done holding the same lock.
Reported-by: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com>
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 4acb4190 tries to fix the using uninitialized value
introduced by commit 3dc43e3, but it would make the
per-socket memory limits too small.
This patch fixes this and also remove the redundant codes
introduced in 4acb4190.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current code checks for stored_mpdu_num > 1, causing
the reorder_timer to be triggered indefinitely, but the
frame is never timed-out (until the next packet is received)
Signed-off-by: Eliad Peller <eliad@wizery.com>
Cc: <stable@vger.kernel.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The parameters for ETHTOOL_FLASHDEV include a filename, which ought to
be null-terminated. Currently the only driver that implements
ethtool_ops::flash_device attempts to add a null terminator if
necessary, but does it wrongly. Do it in the ethtool core instead.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some of our machines were reporting:
TCP: too many of orphaned sockets
even when the number of orphaned sockets was well below the
limit.
We print a different message depending on whether we're out
of TCP memory or there are too many orphaned sockets.
Also move the check out of line and cleanup the messages
that were printed.
Signed-off-by: Arun Sharma <asharma@fb.com>
Suggested-by: Mohan Srinivasan <mohan@fb.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: David Miller <davem@davemloft.net>
Cc: Glauber Costa <glommer@parallels.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1) Setting link attributes can modify the size of the attributes that
would be reported on a subsequent getlink netlink operation,
therefore min_ifinfo_dump_size needs to be adjusted. From Stefan
Gula.
2) Resegmentation of TSO frames while trimming can violate invariants
expected by callers, namely that the number of segments can only stay
the same or decrease, never increase. If MSS changes, however, we
can trim data but then end up with more segments. Fix this by only
segmenting to the MSS already recorded in the SKB. That's the
simplest fix for now and if we want to get more fancy in the future
that's a more involved change.
This probably explains some retransmit counter inaccuracies.
From Neal Cardwell.
3) Fix too-many-wakeups in POLL with AF_UNIX sockets, from Eric Dumazet.
4) Fix CAIF crashes wrt. namespace handling. From Eric Dumazet and
Eric W. Biederman.
5) TCP port selection fixes from Flavio Leitner.
6) More socket memory cgroup build fixes in certain randonfig
situations. From Glauber Costa.
7) Fix TCP memory sysctl regression reported by Ingo Molnar, also from
Glauber Costa.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
af_unix: fix EPOLLET regression for stream sockets
tcp: fix tcp_trim_head() to adjust segment count with skb MSS
net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL
net caif: Register properly as a pernet subsystem.
netns: Fail conspicously if someone uses net_generic at an inappropriate time.
net: explicitly add jump_label.h header to sock.h
net: RTNETLINK adjusting values of min_ifinfo_dump_size
ipv6: Fix ip_gre lockless xmits.
xen-netfront: correct MAX_TX_TARGET calculation.
netns: fix net_alloc_generic()
tcp: bind() optimize port allocation
tcp: bind() fix autoselection to share ports
l2tp: l2tp_ip - fix possible oops on packet receive
iwlwifi: fix PCI-E transport "inta" race
mac80211: set bss_conf.idle when vif is connected
mac80211: update oper_channel on ibss join
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Commit 0884d7aa24 (AF_UNIX: Fix poll blocking problem when reading from
a stream socket) added a regression for epoll() in Edge Triggered mode
(EPOLLET)
Appropriate fix is to use skb_peek()/skb_unlink() instead of
skb_dequeue(), and only call skb_unlink() when skb is fully consumed.
This remove the need to requeue a partial skb into sk_receive_queue head
and the extra sk->sk_data_ready() calls that added the regression.
This is safe because once skb is given to sk_receive_queue, it is not
modified by a writer, and readers are serialized by u->readlock mutex.
This also reduce number of spinlock acquisition for small reads or
MSG_PEEK users so should improve overall performance.
Reported-by: Nick Mathewson <nickm@freehaven.net>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Alexey Moiseytsev <himeraster@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit fixes tcp_trim_head() to recalculate the number of
segments in the skb with the skb's existing MSS, so trimming the head
causes the skb segment count to be monotonically non-increasing - it
should stay the same or go down, but not increase.
Previously tcp_trim_head() used the current MSS of the connection. But
if there was a decrease in MSS between original transmission and ACK
(e.g. due to PMTUD), this could cause tcp_trim_head() to
counter-intuitively increase the segment count when trimming bytes off
the head of an skb. This violated assumptions in tcp_tso_acked() that
tcp_trim_head() only decreases the packet count, so that packets_acked
in tcp_tso_acked() could underflow, leading tcp_clean_rtx_queue() to
pass u32 pkts_acked values as large as 0xffffffff to
ca_ops->pkts_acked().
As an aside, if tcp_trim_head() had really wanted the skb to reflect
the current MSS, it should have called tcp_set_skb_tso_segs()
unconditionally, since a decrease in MSS would mean that a
single-packet skb should now be sliced into multiple segments.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Nandita Dukkipati <nanditad@google.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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sysctl_tcp_mem() initialization was moved to sysctl_tcp_ipv4.c
in commit 3dc43e3e4d0b52197d3205214fe8f162f9e0c334, since it
became a per-ns value.
That code, however, will never run when CONFIG_SYSCTL is
disabled, leading to bogus values on those fields - causing hung
TCP sockets.
This patch fixes it by keeping an initialization code in
tcp_init(). It will be overwritten by the first net namespace
init if CONFIG_SYSCTL is compiled in, and do the right thing if
it is compiled out.
It is also named properly as tcp_init_mem(), to properly signal
its non-sysctl side effect on TCP limits.
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Glauber Costa <glommer@parallels.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/4F22D05A.8030604@parallels.com
[ renamed the function, tidied up the changelog a bit ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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NFS client bugfixes for Linux 3.3 (pull 3)
* tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: Fix machine creds in generic_create_cred and generic_match
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caif is a subsystem and as such it needs to register with
register_pernet_subsys instead of register_pernet_device.
Among other problems using register_pernet_device was resulting in
net_generic being called before the caif_net structure was allocated.
Which has been causing net_generic to fail with either BUG_ON's or by
return NULL pointers.
A more ugly problem that could be caused is packets in flight why the
subsystem is shutting down.
To remove confusion also remove the cruft cause by inappropriately
trying to fix this bug.
With the aid of the previous patch I have tested this patch and
confirmed that using register_pernet_subsys makes the failure go away as
it should.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
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Setting link parameters on a netdevice changes the value
of if_nlmsg_size(), therefore it is necessary to recalculate
min_ifinfo_dump_size.
Signed-off-by: Stefan Gula <steweg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Tunnel devices set NETIF_F_LLTX to bypass HARD_TX_LOCK. Sit and
ipip set this unconditionally in ops->setup, but gre enables it
conditionally after parameter passing in ops->newlink. This is
not called during tunnel setup as below, however, so GRE tunnels are
still taking the lock.
modprobe ip_gre
ip tunnel add test0 mode gre remote 10.5.1.1 dev lo
ip link set test0 up
ip addr add 10.6.0.1 dev test0
# cat /sys/class/net/test0/features
# $DIR/test_tunnel_xmit 10 10.5.2.1
ip route add 10.5.2.0/24 dev test0
ip tunnel del test0
The newlink callback is only called in rtnl_netlink, and only if
the device is new, as it calls register_netdevice internally. Gre
tunnels are created at 'ip tunnel add' with ioctl SIOCADDTUNNEL,
which calls ipgre_tunnel_locate, which calls register_netdev.
rtnl_newlink is called at 'ip link set', but skips ops->newlink
and the device is up with locking still enabled. The equivalent
ipip tunnel works fine, btw (just substitute 'method gre' for
'method ipip').
On kernels before /sys/class/net/*/features was removed [1],
the first commented out line returns 0x6000 with method gre,
which indicates that NETIF_F_LLTX (0x1000) is not set. With ipip,
it reports 0x7000. This test cannot be used on recent kernels where
the sysfs file is removed (and ETHTOOL_GFEATURES does not currently
work for tunnel devices, because they lack dev->ethtool_ops).
The second commented out line calls a simple transmission test [2]
that sends on 24 cores at maximum rate. Results of a single run:
ipip: 19,372,306
gre before patch: 4,839,753
gre after patch: 19,133,873
This patch replicates the condition check in ipgre_newlink to
ipgre_tunnel_locate. It works for me, both with oseq on and off.
This is the first time I looked at rtnetlink and iproute2 code,
though, so someone more knowledgeable should probably check the
patch. Thanks.
The tail of both functions is now identical, by the way. To avoid
code duplication, I'll be happy to rework this and merge the two.
[1] http://patchwork.ozlabs.org/patch/104610/
[2] http://kernel.googlecode.com/files/xmit_udp_parallel.c
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When a new net namespace is created, we should attach to it a "struct
net_generic" with enough slots (even empty), or we can hit the following
BUG_ON() :
[ 200.752016] kernel BUG at include/net/netns/generic.h:40!
...
[ 200.752016] [<ffffffff825c3cea>] ? get_cfcnfg+0x3a/0x180
[ 200.752016] [<ffffffff821cf0b0>] ? lockdep_rtnl_is_held+0x10/0x20
[ 200.752016] [<ffffffff825c41be>] caif_device_notify+0x2e/0x530
[ 200.752016] [<ffffffff810d61b7>] notifier_call_chain+0x67/0x110
[ 200.752016] [<ffffffff810d67c1>] raw_notifier_call_chain+0x11/0x20
[ 200.752016] [<ffffffff821bae82>] call_netdevice_notifiers+0x32/0x60
[ 200.752016] [<ffffffff821c2b26>] register_netdevice+0x196/0x300
[ 200.752016] [<ffffffff821c2ca9>] register_netdev+0x19/0x30
[ 200.752016] [<ffffffff81c1c67a>] loopback_net_init+0x4a/0xa0
[ 200.752016] [<ffffffff821b5e62>] ops_init+0x42/0x180
[ 200.752016] [<ffffffff821b600b>] setup_net+0x6b/0x100
[ 200.752016] [<ffffffff821b6466>] copy_net_ns+0x86/0x110
[ 200.752016] [<ffffffff810d5789>] create_new_namespaces+0xd9/0x190
net_alloc_generic() should take into account the maximum index into the
ptr array, as a subsystem might use net_generic() anytime.
This also reduces number of reallocations in net_assign_generic()
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Sjur Brændeland <sjur.brandeland@stericsson.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Port autoselection finds a port and then drop the lock,
then right after that, gets the hash bucket again and lock it.
Fix it to go direct.
Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current code checks for conflicts when the application
requests a specific port. If there is no conflict, then
the request is granted.
On the other hand, the port autoselection done by the kernel
fails when all ports are bound even when there is a port
with no conflict available.
The fix changes port autoselection to check if there is a
conflict and use it if not.
Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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