When using Secure Connections Only mode, then only P-256 OOB data is
valid and should be provided. In case userspace provides P-192 and P-256
OOB data, then the P-192 values will be set to zero. However the present
value of the IO capability exchange still mentioned that both values
would be available. Fix this by telling the controller clearly that only
the P-256 OOB data is present.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
For debugging purposes it is good to know which OOB data is actually
currently loaded for each controller. So expose that list via debugfs.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When the Hardware Error event is send by the controller, the Bluetooth
core stores the error code. Expose it via debugfs so it can be retrieved
later on.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
To allow easier debugging when debug keys are generated, provide debugfs
entry for checking the setting of debug keys usage.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When the HCI Write Simple Pairing Debug Mode command has been issued,
the result needs to be tracked and stored. The hdev->ssp_debug_mode
variable is already present, but was never updated when the mode in
the controller was actually changed.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The value of the ssp_debug_mode should be accessible via debugfs to be
able to determine if a BR/EDR controller generates debugs keys or not.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
In case the remote only provided P-192 or P-256 data for OOB pairing,
then make sure that the data value pointers are correctly set. That way
the core can provide correct information when remote OOB data present
information have to be communicated.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Before setting the OOB data present flag with SMP pairing, check the
newly introduced present tracking that actual OOB data values have
been provided. The existence of remote OOB data structure does not
actually mean that the correct data values are available.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When BR/EDR Secure Connections has been enabled, the OOB data present
value can take 2 additional values. The host has to clearly provide
details about if P-192 OOB data, P-256 OOB data or a combination of
P-192 and P-256 OOB data is present.
In case BR/EDR Secure Connections is not enabled or not supported,
then check that P-192 OOB data is actually present and return the
correct value based on that.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Instead of doing complex calculation every time the OOB data is used,
just calculate the OOB data present value and store it with the OOB
data raw values.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The smp_unregister() function needs to be called every time the
controller is powered down. There are multiple entry points when
this can happen. One is "hciconfig hci0 reset" which will throw
a WARN_ON when LE support has been enabled.
[ 78.564620] WARNING: CPU: 0 PID: 148 at net/bluetooth/smp.c:3075 smp_register+0xf1/0x170()
[ 78.564622] Modules linked in:
[ 78.564628] CPU: 0 PID: 148 Comm: kworker/u3:1 Not tainted 3.19.0-rc4-devel+ #404
[ 78.564629] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
[ 78.564635] Workqueue: hci0 hci_rx_work
[ 78.564638] ffffffff81b4a7a2 ffff88001cb2fb38 ffffffff8161d881 0000000080000000
[ 78.564642] 0000000000000000 ffff88001cb2fb78 ffffffff8103b870 696e55206e6f6f6d
[ 78.564645] ffff88001d965000 0000000000000000 0000000000000000 ffff88001d965000
[ 78.564648] Call Trace:
[ 78.564655] [<ffffffff8161d881>] dump_stack+0x4f/0x7b
[ 78.564662] [<ffffffff8103b870>] warn_slowpath_common+0x80/0xc0
[ 78.564667] [<ffffffff81544b00>] ? add_uuid+0x1f0/0x1f0
[ 78.564671] [<ffffffff8103b955>] warn_slowpath_null+0x15/0x20
[ 78.564674] [<ffffffff81562d81>] smp_register+0xf1/0x170
[ 78.564680] [<ffffffff81081236>] ? lock_timer_base.isra.30+0x26/0x50
[ 78.564683] [<ffffffff81544bf0>] powered_complete+0xf0/0x120
[ 78.564688] [<ffffffff8152e622>] hci_req_cmd_complete+0x82/0x260
[ 78.564692] [<ffffffff8153554f>] hci_cmd_complete_evt+0x6cf/0x2e20
[ 78.564697] [<ffffffff81623e43>] ? _raw_spin_unlock_irqrestore+0x13/0x30
[ 78.564701] [<ffffffff8106b0af>] ? __wake_up_sync_key+0x4f/0x60
[ 78.564705] [<ffffffff8153a2ab>] hci_event_packet+0xbcb/0x2e70
[ 78.564709] [<ffffffff814094d3>] ? skb_release_all+0x23/0x30
[ 78.564711] [<ffffffff81409529>] ? kfree_skb+0x29/0x40
[ 78.564715] [<ffffffff815296c8>] hci_rx_work+0x1c8/0x3f0
[ 78.564719] [<ffffffff8105bd91>] ? get_parent_ip+0x11/0x50
[ 78.564722] [<ffffffff8105be25>] ? preempt_count_add+0x55/0xb0
[ 78.564727] [<ffffffff8104f65f>] process_one_work+0x12f/0x360
[ 78.564731] [<ffffffff8104ff9b>] worker_thread+0x6b/0x4b0
[ 78.564735] [<ffffffff8104ff30>] ? cancel_delayed_work_sync+0x10/0x10
[ 78.564738] [<ffffffff810542fa>] kthread+0xea/0x100
[ 78.564742] [<ffffffff81620000>] ? __schedule+0x3e0/0x980
[ 78.564745] [<ffffffff81054210>] ? kthread_create_on_node+0x180/0x180
[ 78.564749] [<ffffffff816246ec>] ret_from_fork+0x7c/0xb0
[ 78.564752] [<ffffffff81054210>] ? kthread_create_on_node+0x180/0x180
[ 78.564755] ---[ end trace 8b0d943af76d3736 ]---
This warning is not critical and has only been placed in the code to
actually catch this exact situation. To avoid triggering it move
the smp_unregister() into hci_dev_do_close() which will now also
take care of remove the SMP channel. It is safe to call this function
since it only remove the channel if it has been previously registered.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When receiving a HCI Hardware Error event, the controller should be
assumed to be non-functional until issuing a HCI Reset command.
The Bluetooth hardware errors are vendor specific and so add a
new hdev->hw_error callback that drivers can provide to run extra
code to handle the hardware error.
After completing the vendor specific error handling perform a full
reset of the Bluetooth stack by closing and re-opening the transport.
Based-on-patch-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Split the hci_dev_reset ioctl handling into using hci_dev_do_reset
helper function. Similar to what has been done with hci_dev_do_open
and hci_dev_do_close.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The discovery state should be set to stopped when the HCI device is
powered off. This patch adds the appropriate call to the
hci_discovery_set_state() function from hci_dev_do_close() which is
responsible for the power-off procedure.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When HCI_Reset is issued the discovery state is assumed to be stopped.
The hci_cc_reset() handler was trying to set the state but it was doing
it without using the hci_discovery_set_state() function. Because of this
e.g. the mgmt Discovering event could go without being sent. This patch
fixes the code to use the hci_discovery_set_state() function instead of
just blindly setting the state value.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
There's a check in set_secure_conn() that's supposed to ensure that SSP
is enabled before we try to request the controller to enable SC (since
SSP is a pre-requisite for it). However, this check only makes sense for
controllers actually supporting BR/EDR SC. If we have a 4.0 controller
we're only interested in the LE part of SC and should therefore not be
requiring SSP to be enabled. This patch adds an additional condition to
check for lmp_sc_capable(hdev) before requiring SSP to be enabled.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
If Secure Connections Only mode has been enabled, the it is important
to check that OOB data for P-256 values is provided. In case it is not,
then tell the remote side that no OOB data is present.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When replying to the IO capability request for Secure Simple Pairing and
Secure Connections, the OOB data present fields needs to set. Instead of
making the calculation inline, split this into a separate helper
function.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When Secure Connections Only mode has been enabled and remote OOB data
is requested, then only provide P-256 hash and randomizer vaulues. The
fields for P-192 hash and randomizer should be set to zero.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Until legacy SMP OOB pairing is implemented user space should be given a
clear error when trying to use it. This patch adds a corresponding check
to the Add Remote OOB Data handler function which returns "invalid
parameters" if non-zero Rand192 or Hash192 parameters were given for an
LE address.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
l2cap/rfcomm/sco_sock_accept() are wait loops which may acquire
sleeping locks. Since both wait loops and sleeping locks use
task_struct.state to sleep and wake, the nested sleeping locks
destroy the wait loop state.
Use the newly-minted wait_woken() and DEFINE_WAIT_FUNC() for the
wait loop. DEFINE_WAIT_FUNC() allows an alternate wake function
to be specified; in this case, the predefined scheduler function,
woken_wake_function(). This wait construct ensures wakeups will
not be missed without requiring the wait loop to set the
task state before condition evaluation. How this works:
CPU 0 | CPU 1
|
| is <condition> set?
| no
set <condition> |
|
wake_up_interruptible |
woken_wake_function |
set WQ_FLAG_WOKEN |
try_to_wake_up |
| wait_woken
| set TASK_INTERRUPTIBLE
| WQ_FLAG_WOKEN? yes
| set TASK_RUNNING
|
| - loop -
|
| is <condition> set?
| yes - exit wait loop
Fixes "do not call blocking ops when !TASK_RUNNING" warnings
in l2cap_sock_accept(), rfcomm_sock_accept() and sco_sock_accept().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This patch converts the Set Secure Connection HCI handling to use a HCI
request instead of using a hard-coded callback in hci_event.c. This e.g.
ensures that we don't clear the flags incorrectly if something goes
wrong with the power up process (not related to a mgmt Set SC command).
The code can also be simplified a bit since only one pending Set SC
command is allowed, i.e. mgmt_pending_foreach usage is not needed.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Add Remote OOB Data mgmt command should allow data to be passed for
LE as well. This patch removes a left-over check for BDADDR_BREDR that
should not be there anymore.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Before doing any other verifications, the add_remote_oob_data function
should first check that the given address is valid. This patch adds such
a missing check to the beginning of the function.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When BR/EDR is supported by a controller, then it is required to enable
Secure Simple Pairing first before enabling the Secure Connections
feature.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
When a powered on dual-mode controller has been configured to operate
as LE only with secure connections, then the BR/EDR side of things can
not be switched back on. Do reconfigure the controller it first needs
to be powered down.
The secure connections feature is implemented in the BR/EDR controller
while for LE it is implemented in the host. So explicitly forbid such
a transaction to avoid inconsistent states.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
The BR/EDR Secure Connections feature should only be enabled when the
Secure Simple Pairing mode has been enabled first. However since secure
connections is feature that is valid for BR/EDR and LE, this needs
special handling.
When enabling secure connections on a LE only configured controller,
thent the BR/EDR side should not be enabled in the controller. This
patches makes the BR/EDR Secure Connections feature depending on
enabling Secure Simple Pairing mode first.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Start Discovery was reporting 0 RSSI for invalid RSSI only for
BR/EDR devices. LE devices were reported with RSSI 127.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org # 3.19+
* fix network-manager which was broken by the previous changes
* fix delete-station events, which were broken by me making the
genlmsg_end() mistake
* fix a timer left running during suspend in some race conditions
that would cause an annoying (but harmless) warning
* (less important, but in the tree already) remove 80+80 MHz rate
reporting since the spec doesn't distinguish it from 160 MHz;
as the bitrate they're both 160 MHz bandwidth
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Merge tag 'mac80211-next-for-davem-2015-01-19' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Some further updates for net-next:
* fix network-manager which was broken by the previous changes
* fix delete-station events, which were broken by me making the
genlmsg_end() mistake
* fix a timer left running during suspend in some race conditions
that would cause an annoying (but harmless) warning
* (less important, but in the tree already) remove 80+80 MHz rate
reporting since the spec doesn't distinguish it from 160 MHz;
as the bitrate they're both 160 MHz bandwidth
Signed-off-by: David S. Miller <davem@davemloft.net>
My previous patch to this file changed the code to be bug-compatible
towards userspace. Unless userspace (which I wasn't able to find)
implements the dump reader by hand in a wrong way, this isn't needed.
If it uses libnl or similar code putting multiple messages into a
single SKB is far more efficient.
Change the code to do this. While at it, also clean it up and don't
use so many variables - just store the address in the callback args
directly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This tc action allows you to retrieve the connection tracking mark
This action has been used heavily by openwrt for a few years now.
There are known limitations currently:
doesn't work for initial packets, since we only query the ct table.
Fine given use case is for returning packets
no implicit defrag.
frags should be rare so fix later..
won't work for more complex tasks, e.g. lookup of other extensions
since we have no means to store results
we still have a 2nd lookup later on via normal conntrack path.
This shouldn't break anything though since skb->nfct isn't altered.
V2:
remove unnecessary braces (Jiri)
change the action identifier to 14 (Jiri)
Fix some stylistic issues caught by checkpatch
V3:
Move module params to bottom (Cong)
Get rid of tcf_hashinfo_init and friends and conform to newer API (Cong)
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
DSA-enabled master network devices with a switch tagging protocol should
strip the protocol specific format before handing the frame over to
higher layer.
When adding such a DSA master network device as a bridge member, we go
through the following code path when receiving a frame:
__netif_receive_skb_core
-> first ptype check against ptype_all is not returning any
handler for this skb
-> check and invoke rx_handler:
-> deliver frame to the bridge layer: br_handle_frame
DSA registers a ptype handler with the fake ETH_XDSA ethertype, which is
called *after* the bridge-layer rx_handler has run. br_handle_frame()
tries to parse the frame it received from the DSA master network device,
and will not be able to match any of its conditions and jumps straight
at the end of the end of br_handle_frame() and returns
RX_HANDLER_CONSUMED there.
Since we returned RX_HANDLER_CONSUMED, __netif_receive_skb_core() stops
RX processing for this frame and returns NET_RX_SUCCESS, so we never get
a chance to call our switch tag packet processing logic and deliver
frames to the DSA slave network devices, and so we do not get any
functional bridge members at all.
Instead of cluttering the bridge receive path with DSA-specific checks,
and rely on assumptions about how __netif_receive_skb_core() is
processing frames, we simply deny adding the DSA master network device
(conduit interface) as a bridge member, leaving only the slave DSA
network devices to be bridge members, since those will work correctly in
all circumstances.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The logic to configure a network interface for kernel IP
auto-configuration is very simplistic, and does not handle the case
where a device is stacked onto another such as with DSA. This causes the
kernel not to open and configure the master network device in a DSA
switch tree, and therefore slave network devices using this master
network devices as conduit device cannot be open.
This restriction comes from a check in net/dsa/slave.c, which is
basically checking the master netdev flags for IFF_UP and returns
-ENETDOWN if it is not the case.
Automatically bringing-up DSA master network devices allows DSA slave
network devices to be used as valid interfaces for e.g: NFS root booting
by allowing kernel IP autoconfiguration to succeed on these interfaces.
On the reverse path, make sure we do not attempt to close a DSA-enabled
device as this would implicitely prevent the slave DSA network device
from operating.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the ability to create a netdevice in a specified netns and
then move it into the final netns. In fact, it allows to have a symetry between
get and set rtnl messages.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement rtnl_link_ops->get_link_net() callback so that IFLA_LINK_NETNSID is
added to rtnetlink messages.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a new attribute (IFLA_LINK_NETNSID) which contains the 'link'
netns id when this netns is different from the netns where the interface
stands (for example for x-net interfaces like ip tunnels).
With this attribute, it's possible to interpret correctly all advertised
information (like IFLA_LINK, etc.).
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
With this patch, a user can define an id for a peer netns by providing a FD or a
PID. These ids are local to the netns where it is added (ie valid only into this
netns).
The main function (ie the one exported to other module), peernet2id(), allows to
get the id of a peer netns. If no id has been assigned by the user, this
function allocates one.
These ids will be used in netlink messages to point to a peer netns, for example
in case of a x-netns interface.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
While suspending, we destroy the authentication /
association that might be taking place. While doing so, we
forgot to delete the timer which can be firing after
local->suspended is already set, producing the warning below.
Fix that by deleting the timer.
[66722.825487] WARNING: CPU: 2 PID: 5612 at net/mac80211/util.c:755 ieee80211_can_queue_work.isra.18+0x32/0x40 [mac80211]()
[66722.825487] queueing ieee80211 work while going to suspend
[66722.825529] CPU: 2 PID: 5612 Comm: kworker/u16:69 Tainted: G W O 3.16.1+ #24
[66722.825537] Workqueue: events_unbound async_run_entry_fn
[66722.825545] Call Trace:
[66722.825552] <IRQ> [<ffffffff817edbb2>] dump_stack+0x4d/0x66
[66722.825556] [<ffffffff81075cad>] warn_slowpath_common+0x7d/0xa0
[66722.825572] [<ffffffffa06b5b90>] ? ieee80211_sta_bcn_mon_timer+0x50/0x50 [mac80211]
[66722.825573] [<ffffffff81075d1c>] warn_slowpath_fmt+0x4c/0x50
[66722.825586] [<ffffffffa06977a2>] ieee80211_can_queue_work.isra.18+0x32/0x40 [mac80211]
[66722.825598] [<ffffffffa06977d5>] ieee80211_queue_work+0x25/0x50 [mac80211]
[66722.825611] [<ffffffffa06b5bac>] ieee80211_sta_timer+0x1c/0x20 [mac80211]
[66722.825614] [<ffffffff8108655a>] call_timer_fn+0x8a/0x300
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This reverts commit ba1debdfed.
Oliver reported that it breaks network-manager, for some reason with
this patch NM decides that the device isn't wireless but "generic"
(ethernet), sees no carrier (as expected with wifi) and fails to do
anything else with it.
Revert this to unbreak userspace.
Reported-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit 02dba4388d ("bridge: fix setlink/dellink notifications") removed usage of oflags in
both rtnl_bridge_setlink() and rtnl_bridge_dellink() methods. This patch removes this variable as it is no
longer needed.
Signed-off-by: Rami Rosen <rami.rosen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 053c095a82 ("netlink: make nlmsg_end() and genlmsg_end()
void") didn't catch all of the cases where callers were breaking out
on the return value being equal to zero, which they no longer should
when zero means success.
Fix all such cases.
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Reported-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Contrary to common expectations for an "int" return, these functions
return only a positive value -- if used correctly they cannot even
return 0 because the message header will necessarily be in the skb.
This makes the very common pattern of
if (genlmsg_end(...) < 0) { ... }
be a whole bunch of dead code. Many places also simply do
return nlmsg_end(...);
and the caller is expected to deal with it.
This also commonly (at least for me) causes errors, because it is very
common to write
if (my_function(...))
/* error condition */
and if my_function() does "return nlmsg_end()" this is of course wrong.
Additionally, there's not a single place in the kernel that actually
needs the message length returned, and if anyone needs it later then
it'll be very easy to just use skb->len there.
Remove this, and make the functions void. This removes a bunch of dead
code as described above. The patch adds lines because I did
- return nlmsg_end(...);
+ nlmsg_end(...);
+ return 0;
I could have preserved all the function's return values by returning
skb->len, but instead I've audited all the places calling the affected
functions and found that none cared. A few places actually compared
the return value with <= 0 in dump functionality, but that could just
be changed to < 0 with no change in behaviour, so I opted for the more
efficient version.
One instance of the error I've made numerous times now is also present
in net/phonet/pn_netlink.c in the route_dumpit() function - it didn't
check for <0 or <=0 and thus broke out of the loop every single time.
I've preserved this since it will (I think) have caused the messages to
userspace to be formatted differently with just a single message for
every SKB returned to userspace. It's possible that this isn't needed
for the tools that actually use this, but I don't even know what they
are so couldn't test that changing this behaviour would be acceptable.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 07f6c4bc (tipc: convert tipc reference table to use generic
rhashtable) introduced a problem with port listing in the new netlink
API. It broke the resume functionality resulting in a never ending
loop. This was caused by starting with the first hash table every time
subsequently never returning an empty skb (terminating).
This patch fixes the resume mechanism by keeping a logical reference
to the last hash table along with a logical reference to the socket
(port) that didn't fit in the previous message.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Johan Hedberg says:
====================
pull request: bluetooth-next 2015-01-16
Here are some more bluetooth & ieee802154 patches intended for 3.20:
- Refactoring & cleanups of ieee802154 & 6lowpan code
- Various fixes to the btmrvl driver
- Fixes for Bluetooth Low Energy Privacy feature handling
- Added build-time sanity checks for sockaddr sizes
- Fixes for Security Manager registration on LE-only controllers
- Refactoring of broken inquiry mode handling to a generic quirk
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch benefits from newly introduced switchdev notifier and uses it
to propagate fdb learn events from rocker driver to bridge. That avoids
direct function calls and possible use by other listeners (ovs).
Suggested-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduces new notifier for purposes of exposing events which happen
on switch driver side. The consumers of the event messages are mainly involved
masters, namely bridge and ovs.
Suggested-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This field already contains the length of the iovec, no need to calculate it
again.
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It was suggested by DaveM to change the name as "len" might indicate
unit bytes.
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This action provides a possibility to exec custom BPF code.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
