Jon Paul Maloy [Fri, 13 Mar 2015 20:08:07 +0000 (16:08 -0400)]
tipc: eliminate unnecessary linearization of incoming buffers
Currently, TIPC linearizes all incoming buffers directly at reception
before passing them upwards in the stack. This is clearly a waste of
CPU resources, and must be avoided.
In this commit, we eliminate this unnecessary linearization. We still
ensure that at least the message header is linear, and that the buffer
is linearized where this is still needed, i.e. when unbundling and when
reversing messages.
In addition, we ensure that fragmented messages are validated after
reassembly before delivering them upwards in the stack.
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Paul Maloy [Fri, 13 Mar 2015 20:08:06 +0000 (16:08 -0400)]
tipc: move message validation function to msg.c
The function link_buf_validate() is in reality re-entrant and context
independent, and will in later commits be called from several locations.
Therefore, we move it to msg.c, make it outline and rename the it to
tipc_msg_validate().
We also redesign the function to make proper use of pskb_may_pull()
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Paul Maloy [Fri, 13 Mar 2015 20:08:05 +0000 (16:08 -0400)]
tipc: add framework for node capabilities exchange
The TIPC protocol spec has defined a 13 bit capability bitmap in
the neighbor discovery header, as a means to maintain compatibility
between different code and protocol generations. Until now this field
has been unused.
We now introduce the basic framework for exchanging capabilities
between nodes at first contact. After exchange, a peer node's
capabilities are stored as a 16 bit bitmap in struct tipc_node.
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 14 Mar 2015 18:29:45 +0000 (14:29 -0400)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:
====================
Here's another set of Bluetooth & ieee802154 patches intended for 4.1:
- Added support for QCA ROME chipset family in the btusb driver
- at86rf230 driver fixes & cleanups
- ieee802154 cleanups
- Refactoring of Bluetooth mgmt API to allow new users
- New setting for static Bluetooth address exposed to user space
- Refactoring of hci_dev flags to remove limit of 32
- Remove unnecessary fast-connectable setting usage restrictions
- Fix behavior to be consistent when trying to pair already paired device
- Service discovery corner-case fixes
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Wed, 11 Mar 2015 16:56:35 +0000 (17:56 +0100)]
ieee802154: don't export static symbol
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
type T;
identifier f;
@@
static T f (...) { ... }
@@
identifier r.f;
declarer name EXPORT_SYMBOL;
@@
-EXPORT_SYMBOL(f);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 9 Mar 2015 12:56:12 +0000 (13:56 +0100)]
at86rf230: fix volatile regmap registers
These registers are also changed by transceiver and should be volatile
for right accessing via regmap debugfs.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 9 Mar 2015 12:56:11 +0000 (13:56 +0100)]
at86rf230: add support for calibration timeout
This patch adds a handling for calibration if we are 5 minutes in PLL
state. I first tried to implement the calibration functionality in
TX_ON state via register values CF_START and DCU_START, but this occurs
a one second delay at each calibration time.
An another solution to start a calibration is to switch from TRX_OFF
state into TX_ON, then a calibration is done automatically by
transceiver. This method will be used in this patch, after each transmit
of a frame we check with jiffies if the PLL is set 5 minutes without
doing a TRX_OFF->(TX_ON || RX_AACK_ON) or channel switch. The worst case
would be a transceiver in receiving mode only, but this is under normal
operation very unlikely.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Cc: Werner Almesberger <werner@almesberger.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 9 Mar 2015 12:56:10 +0000 (13:56 +0100)]
at86rf230: replace state change sleeps with hrtimer
This patch replace the state change timing relevant sleeps with
hrtimers. Currently the sleeps are done in the complete handler of
spi_async. The relation of doing the state change timing sleep with a
timer will get the sleep functionality out of spi_async complete handler
context.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sat, 7 Mar 2015 21:07:07 +0000 (22:07 +0100)]
at86rf230: init xtal_trim with zero
This patch initialize xtal_trim value to zero. The xtal_trim property is
an optional device tree value. Currently if no xtal_trim property is
given the xtal_trim value can be contain random data, because it's a
stack variable. This patch init the xtal_trim value to zero which is
also the default value after reset for at86rf230 transceivers.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Wed, 4 Mar 2015 20:19:59 +0000 (21:19 +0100)]
mac802154: correct max sifs size handling
This patch fix the max sifs size correction when the
IEEE802154_HW_TX_OMIT_CKSUM flag is set. With this flag the sk_buff
doesn't contain the CRC, because the transceiver will add the CRC
while transmit.
Also add some defines for the max sifs frame size value and frame check
sequence according to 802.15.4 standard.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 2 Mar 2015 14:10:05 +0000 (15:10 +0100)]
ieee802154: remove deprecated sysfs entries
It's only necessary to offer the name and index, others value are
available over netlink.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 2 Mar 2015 14:10:04 +0000 (15:10 +0100)]
ieee802154: change wpan-phy name to phy
Currently the wpan_phy under /sys/class/ieee802154/ is named as
"wpan-phy#", this patch will change the name to phy. This will
introduce the same naming convention like wireless.
Note: wpan-tools users will not type "wpan-phy#" anymore, just a simple
"phy#" is enough.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 2 Mar 2015 14:10:03 +0000 (15:10 +0100)]
ieee802154: 6lowpan: fix ARPHRD to ARPHRD_6LOWPAN
Currently there exists two interface types with ARPHRD_IEEE802154. These
are the 802.15.4 interfaces and 802.15.4 6LoWPAN interfaces. This is
more a bug because some userspace applications checks on this value like
wireshark. This occurs that wireshark will always try to parse a lowpan
interface as 802.15.4 frames. With ARPHRD_6LOWPAN wireshark will parse
it as IPv6 frames which is correct.
Much applications checks on this value to readout the EUI64 mac address
which should be the same for ARPHRD_6LOWPAN. BTLE 6LoWPAN and ieee802154
6LoWPAN will share now the same ARPHRD.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
David S. Miller [Fri, 13 Mar 2015 19:52:38 +0000 (15:52 -0400)]
Merge branch 'bcmgenet_xmit_more'
Florian Fainelli says:
====================
net: bcmgenet: xmit_more support
This patch series adds xmit_more support to the GENET driver by allowing
the deferal of the producer index write to the TDMA engine.
Changes in v2:
- move the netif_tx_stop_queue check *before* updating the producer index
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Fri, 13 Mar 2015 19:11:07 +0000 (12:11 -0700)]
net: bcmgenet: add support for xmit_more
Delay the update of the TDMA producer index unless this is the last SKB
in a batch, or the queue is already stopped. Move the check for whether
the queue should be stopped before the xmit_more check to avoid locking
the transmit queue in case there was a SKB submitted which has xmit_more
set.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Fri, 13 Mar 2015 19:11:06 +0000 (12:11 -0700)]
net: bcmgenet: update ring producer index and buffer count in xmit
There is no need to have both bcmgenet_xmit_single() and
bcmgenet_xmit_frag() perform a free_bds decrement and a prod_index
increment by one. In case one of these functions fails to map a SKB or
fragment for transmit, we will return and exit bcmgenet_xmit() with an
error.
We can therefore safely use our local copy of nr_frags to know by how
much we should decrement the number of free buffers available, and by
how much the producer count must be incremented and do this in the tail
of bcmgenet_xmit().
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petri Gynther [Thu, 12 Mar 2015 22:48:00 +0000 (15:48 -0700)]
net: bcmgenet: rewrite bcmgenet_rx_refill()
Currently, bcmgenet_desc_rx() calls bcmgenet_rx_refill() at the end of
Rx packet processing loop, after the current Rx packet has already been
passed to napi_gro_receive(). However, bcmgenet_rx_refill() might fail
to allocate a new Rx skb, thus leaving a hole on the Rx queue where no
valid Rx buffer exists.
To eliminate this situation:
1. Rewrite bcmgenet_rx_refill() to retain the current Rx skb on the Rx
queue if a new replacement Rx skb can't be allocated and DMA-mapped.
In this case, the data on the current Rx skb is effectively dropped.
2. Modify bcmgenet_desc_rx() to call bcmgenet_rx_refill() at the top of
Rx packet processing loop, so that the new replacement Rx skb is
already in place before the current Rx skb is processed.
Signed-off-by: Petri Gynther <pgynther@google.com>
Tested-by: Jaedon Shin <jaedon.shin@gmail.com>--
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcel Holtmann [Fri, 13 Mar 2015 17:20:35 +0000 (10:20 -0700)]
Bluetooth: Merge hdev->dbg_flags fields into hdev->dev_flags
With the extension of hdev->dev_flags utilizing a bitmap now, the space
is no longer restricted. Merge the hdev->dbg_flags into hdev->dev_flags
to save space on 64-bit architectures. On 32-bit architectures no size
reduction happens.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 16:04:17 +0000 (09:04 -0700)]
Bluetooth: Use DECLARE_BITMAP for hdev->dev_flags field
The hdev->dev_flags field has outgrown itself on 32-bit systems. So
instead of hacking around it, switch to using DECLARE_BITMAP.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Daniel Drake [Tue, 24 Feb 2015 00:16:47 +0000 (18:16 -0600)]
Bluetooth: btusb: Add helper for READ_LOCAL_VERSION command
Multiple codepaths duplicate some simple code to read and
sanity-check local version information. Before I add a couple more
such codepaths, add a helper to reduce duplication.
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 09:11:06 +0000 (02:11 -0700)]
Bluetooth: Introduce hci_dev_test_and_set_flag helper macro
Instead of manually coding test_and_set_bit on hdev->dev_flags all the
time, use hci_dev_test_and_set_flag helper macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 09:11:05 +0000 (02:11 -0700)]
Bluetooth: Introduce hci_dev_test_and_clear_flag helper macro
Instead of manually coding test_and_clear_bit on hdev->dev_flags all the
time, use hci_dev_test_and_clear_flag helper macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 09:11:04 +0000 (02:11 -0700)]
Bluetooth: Introduce hci_dev_test_and_change_flag helper macro
Instead of manually coding test_and_change_bit on hdev->dev_flags all the
time, use hci_dev_test_and_change_flag helper macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 09:11:03 +0000 (02:11 -0700)]
Bluetooth: Introduce hci_dev_change_flag helper macro
Instead of manually coding change_bit on hdev->dev_flags all the time,
use hci_dev_change_flag helper macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 09:11:02 +0000 (02:11 -0700)]
Bluetooth: Introduce hci_dev_clear_flag helper macro
Instead of manually coding clear_bit on hdev->dev_flags all the time,
use hci_dev_clear_flag helper macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 09:11:01 +0000 (02:11 -0700)]
Bluetooth: Introduce hci_dev_set_flag helper macro
Instead of manually coding set_bit on hdev->dev_flags all the time,
use hci_dev_set_flag helper macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 09:11:00 +0000 (02:11 -0700)]
Bluetooth: Introduce hci_dev_test_flag helper macro
Instead of manually coding test_bit on hdev->dev_flags all the time,
use hci_dev_test_flag helper macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 05:30:58 +0000 (22:30 -0700)]
Bluetooth: Add support connectable advertising setting
The patch adds a second advertising setting that allows switching of the
controller into connectable mode independent of the global connectable
setting.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
David S. Miller [Fri, 13 Mar 2015 05:57:16 +0000 (01:57 -0400)]
Merge branch 'tcp_metrics_netns_debloat'
Eric W. Biederman says:
====================
tcp_metrics: Network namespace bloat reduction v3
This is a small pile of patches that convert tcp_metrics from using a
hash table per network namespace to using a single hash table for all
network namespaces.
This is broken up into several patches so that each small step along
the way could be carefully scrutinized as I wrote it, and equally so
that each small step can be reviewed.
There are several cleanups included in this series. The addition of
panic calls during boot where we can not handle failure, and not trying
simplifies the code. The removal of the return code from
tcp_metrics_flush_all.
The motivation for this change is that the tcp_metrics hash table at
128KiB is one of the largest components of a freshly allocated network
namespace.
I am resending the the previous version I sent has suffered bitrot, so I
have respun the patches so that they apply. I believe I have addressed
all of the review concerns except optimal behavior on little machines
with 32-byte cache lines, which is beyond me as even the current code
has bad behavior in that case.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Fri, 13 Mar 2015 05:07:44 +0000 (00:07 -0500)]
tcp_metrics: Use a single hash table for all network namespaces.
Now that all of the operations are safe on a single hash table
accross network namespaces, allocate a single global hash table
and update the code to use it.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Fri, 13 Mar 2015 05:07:10 +0000 (00:07 -0500)]
tcp_metrics: Rewrite tcp_metrics_flush_all
Rewrite tcp_metrics_flush_all so that it can cope with entries from
different network namespaces on it's hash chain.
This is based on the logic in tcp_metrics_nl_cmd_del for deleting
a selection of entries from a tcp metrics hash chain.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Fri, 13 Mar 2015 05:06:43 +0000 (00:06 -0500)]
tcp_metrics: Remove the unused return code from tcp_metrics_flush_all
tcp_metrics_flush_all always returns 0. Remove the unnecessary return code.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Fri, 13 Mar 2015 05:05:52 +0000 (00:05 -0500)]
tcp_metrics: Add a field tcpm_net and verify it matches on lookup
In preparation for using one tcp metrics hash table for all network
namespaces add a field tcpm_net to struct tcp_metrics_block, and
verify that field on all hash table lookups.
Make the field tcpm_net of type possible_net_t so it takes no space
when network namespaces are disabled.
Further add a function tm_net to read that field so we can be
efficient when network namespaces are disabled and concise
the rest of the time.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Fri, 13 Mar 2015 05:05:24 +0000 (00:05 -0500)]
tcp_metrics: Mix the network namespace into the hash function.
In preparation for using one hash table for all network namespaces
mix the network namespace into the hash value.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Fri, 13 Mar 2015 05:04:51 +0000 (00:04 -0500)]
tcp_metrics: panic when tcp_metrics_init fails.
There is not a practical way to cleanup during boot so
just panic if there is a problem initializing tcp_metrics.
That will at least give us a clear place to start debugging
if something does go wrong.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simon Horman [Fri, 13 Mar 2015 02:00:58 +0000 (11:00 +0900)]
vxlan: Don't set s_addr in vxlan_create_sock
In the case of AF_INET s_addr was set to INADDR_ANY (0) which which both
symmetric with the AF_INET6 case, where s_addr is not set, and unnecessary
as udp_conf is zeroed out earlier in the same function.
I suspect this change does not have any run-time effect due to compiler
optimisations. But it does make the code a little easier on the/my eyes.
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Thu, 12 Mar 2015 23:22:59 +0000 (18:22 -0500)]
mpls: In mpls_egress verify the packet length.
Reobert Shearman noticed that mpls_egress is failing to verify that
the bytes to be examined are in fact present in the packet before
mpls_egress reads those bytes.
As suggested by David Miller reduce this to a single pskb_may_pull
call so that we don't do unnecessary work in the fast path.
Reported-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jaeden Amero [Thu, 12 Mar 2015 23:07:54 +0000 (18:07 -0500)]
net/macb: Only adjust tx_clk on link change
The PHY state machine (in drivers/net/phy/phy.c) will unconditionally
call phydev->adjust_link (macb_handle_link_change) when polling in the
PHY_CHANGELINK state. As currently written, macb always ends up
requesting a new tx_clk frequency in macb_handle_link_change. It is a
waste of time to request a new tx_clk frequency if the link state hasn't
changed, as the tx_clk will already be configured properly.
Let's only request a new tx_clk clock frequency when necessary.
Signed-off-by: Jaeden Amero <jaeden.amero@ni.com>
Cc: Josh Cartwright <joshc@ni.com>
Cc: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Fri, 13 Mar 2015 01:54:10 +0000 (12:54 +1100)]
rhashtable: Fix read-side crash during rehash
This patch fixes a typo rhashtable_lookup_compare where we fail
to recompute the hash when looking up the new table. This causes
elements to be missed and potentially a crash during a resize.
Reported-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 12 Mar 2015 14:28:40 +0000 (15:28 +0100)]
rhashtable: kill ht->shift atomic operations
Commit
c0c09bfdc415 ("rhashtable: avoid unnecessary wakeup for worker
queue") changed ht->shift to be atomic, which is actually unnecessary.
Instead of leaving the current shift in the core rhashtable structure,
it can be cached inside the individual bucket tables.
There, it will only be initialized once during a new table allocation
in the shrink/expansion slow path, and from then onward it stays immutable
for the rest of the bucket table liftime.
That allows shift to be non-atomic. The patch also moves hash_rnd
management into the table setup. The rhashtable structure now consumes
3 instead of 4 cachelines.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ying Xue <ying.xue@windriver.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 12 Mar 2015 11:07:49 +0000 (22:07 +1100)]
rhashtable: Fix reader/rehash race
There is a potential race condition between readers and the rehasher.
In particular, the rehasher could have started a rehash while the
reader finishes a scan of the old table but fails to see the new
table pointer.
This patch closes this window by adding smp_wmb/smp_rmb.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 13 Mar 2015 02:58:27 +0000 (22:58 -0400)]
Merge branch 'listener_refactor'
Eric Dumazet says:
====================
inet: tcp listener refactoring, part 8
These patches prepare request socks being hashed into general ehash
table : We declare 3 aliases (ireq_state, ireq_refcnt, ireq_family)
Note that refcnt is not yet handled, this will be done later.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:10 +0000 (16:44 -0700)]
inet: introduce ireq_family
Before inserting request socks into general hash table,
fill their socket family.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:09 +0000 (16:44 -0700)]
inet: get_openreq4() & get_openreq6() do not need listener
ireq->ir_num contains local port, use it.
Also, get_openreq4() dumping listen_sk->refcnt makes litle sense.
inet_diag_fill_req() can also use ireq->ir_num
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:08 +0000 (16:44 -0700)]
inet: prepare sock_edemux() & sock_gen_put() for new SYN_RECV state
sock_edemux() & sock_gen_put() should be ready to cope with request socks.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:07 +0000 (16:44 -0700)]
net: add req_prot_cleanup() & req_prot_init() helpers
Make proto_register() & proto_unregister() a bit nicer.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:06 +0000 (16:44 -0700)]
inet: add rsk_refcnt/ireq_refcnt to request socks
When request socks will be in ehash, they'll need to be refcounted.
This patch adds rsk_refcnt/ireq_refcnt macros, and adds
reqsk_put() function, but nothing yet use them.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:05 +0000 (16:44 -0700)]
inet: add ireq_state field to inet_request_sock
We need to identify request sock when they'll be visible in
global ehash table.
ireq_state is an alias to req.__req_common.skc_state.
Its value is set to TCP_NEW_SYN_RECV
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:04 +0000 (16:44 -0700)]
inet: add TCP_NEW_SYN_RECV state
TCP_SYN_RECV state is currently used by fast open sockets.
Initial TCP requests (the pseudo sockets created when a SYN is received)
are not yet associated to a state. They are attached to their parent,
and the parent is in TCP_LISTEN state.
This commit adds TCP_NEW_SYN_RECV state, so that we can convert
TCP stack to a different schem gradually.
This state is not exported to user space.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 23:44:03 +0000 (16:44 -0700)]
ipv6: add missing ireq_net & ir_cookie initializations
I forgot to update dccp_v6_conn_request() & cookie_v6_check().
They both need to set ireq->ireq_net and ireq->ir_cookie
Lets clear ireq->ir_cookie in inet_reqsk_alloc()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes:
33cf7c90fe2f ("net: add real socket cookies")
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 12 Mar 2015 19:03:12 +0000 (20:03 +0100)]
cls_bpf: do eBPF invocation under non-bh RCU lock variant for maps
Currently, it is possible in cls_bpf to access eBPF maps only under
rcu_read_lock_bh() variants: while on ingress side, that is, handle_ing(),
the classifier would be called from __netif_receive_skb_core() under
rcu_read_lock(); on egress side, however, it's rcu_read_lock_bh() via
__dev_queue_xmit().
This rcu/rcu_bh mix doesn't work together with eBPF maps as they require
soley to be called under rcu_read_lock(). eBPF maps could also be shared
among various other eBPF programs (possibly even with other eBPF program
types, f.e. tracing) and user space processes, so any context is assumed.
Therefore, a possible fix for cls_bpf is to wrap/nest eBPF program
invocation under non-bh RCU lock variant.
Fixes:
e2e9b6541dd4 ("cls_bpf: add initial eBPF support for programmable classifiers")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 12 Mar 2015 22:26:58 +0000 (18:26 -0400)]
Merge branch 'fib_trie_table_merge_fixes'
Alexander Duyck says:
====================
fib_trie: Minor fixes for table merge
This patch set addresses two issues reported with the tables merged, the
first is a NULL pointer dereference, and the other is to remove a WARN_ON
and set the ordering for aliases from different tables with the same slen
values.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Thu, 12 Mar 2015 21:46:29 +0000 (14:46 -0700)]
fib_trie: Provide a deterministic order for fib_alias w/ tables merged
This change makes it so that we should always have a deterministic ordering
for the main and local aliases within the merged table when two leaves
overlap.
So for example if we have a leaf with a key of 192.168.254.0. If we
previously added two aliases with a prefix length of 24 from both local and
main the first entry would be first and the second would be second. When I
was coding this I had added a WARN_ON should such a situation occur as I
wasn't sure how likely it would be. However this WARN_ON has been
triggered so this is something that should be addressed.
With this patch the ordering of the aliases is as follows. First they are
sorted on prefix length, then on their table ID, then tos, and finally
priority. This way what we end up doing is essentially interleaving the
two tables on what used to be leaf_info structure boundaries.
Fixes:
0ddcf43d5 ("ipv4: FIB Local/MAIN table collapse")
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Thu, 12 Mar 2015 21:46:23 +0000 (14:46 -0700)]
fib_trie: Avoid NULL pointer if local table is not allocated
The function fib_unmerge assumed the local table had already been
allocated. If that is not the case however when custom rules are applied
then this can result in a NULL pointer dereference.
In order to prevent this we must check the value of the local table pointer
and if it is NULL simply return 0 as there is no local table to separate
from the main.
Fixes:
0ddcf43d5 ("ipv4: FIB Local/MAIN table collapse")
Reported-by: Madhu Challa <challa@noironetworks.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Thu, 12 Mar 2015 16:21:42 +0000 (17:21 +0100)]
ebpf: verifier: check that call reg with ARG_ANYTHING is initialized
I noticed that a helper function with argument type ARG_ANYTHING does
not need to have an initialized value (register).
This can worst case lead to unintented stack memory leakage in future
helper functions if they are not carefully designed, or unintended
application behaviour in case the application developer was not careful
enough to match a correct helper function signature in the API.
The underlying issue is that ARG_ANYTHING should actually be split
into two different semantics:
1) ARG_DONTCARE for function arguments that the helper function
does not care about (in other words: the default for unused
function arguments), and
2) ARG_ANYTHING that is an argument actually being used by a
helper function and *guaranteed* to be an initialized register.
The current risk is low: ARG_ANYTHING is only used for the 'flags'
argument (r4) in bpf_map_update_elem() that internally does strict
checking.
Fixes:
17a5267067f3 ("bpf: verifier (add verifier core)")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 12 Mar 2015 18:39:44 +0000 (14:39 -0400)]
Merge branch 'possible_net_t'
Eric W. Biederman says:
====================
Introduce possible_net_t
The current usage of write_pnet and read_pnet is a little laborious and
error prone as you only notice if you failed to include them if are
compiling with network namespaces enabled.
possible_net_t remedies that by using a type that is 0 bytes when
network namespaces are disabled and can only be read and written to with
read_pnet and write_pnet.
Aka less work and safer for the same effect.
I kill hold_net and release_net first as are they are haven't been used
since 2008 and are noise at the points where write_pnet and read_pnet
are used.
I have folded in Eric Dumazets suggestions to improve the killing of
hold_net and release net. And respon. I had to respin anyway as
there was enough changes elsewhere in the tree the previous version
of these patches did not quite apply cleanly.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Thu, 12 Mar 2015 04:06:44 +0000 (23:06 -0500)]
net: Introduce possible_net_t
Having to say
> #ifdef CONFIG_NET_NS
> struct net *net;
> #endif
in structures is a little bit wordy and a little bit error prone.
Instead it is possible to say:
> typedef struct {
> #ifdef CONFIG_NET_NS
> struct net *net;
> #endif
> } possible_net_t;
And then in a header say:
> possible_net_t net;
Which is cleaner and easier to use and easier to test, as the
possible_net_t is always there no matter what the compile options.
Further this allows read_pnet and write_pnet to be functions in all
cases which is better at catching typos.
This change adds possible_net_t, updates the definitions of read_pnet
and write_pnet, updates optional struct net * variables that
write_pnet uses on to have the type possible_net_t, and finally fixes
up the b0rked users of read_pnet and write_pnet.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Thu, 12 Mar 2015 04:04:08 +0000 (23:04 -0500)]
net: Kill hold_net release_net
hold_net and release_net were an idea that turned out to be useless.
The code has been disabled since 2008. Kill the code it is long past due.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 12 Mar 2015 18:35:35 +0000 (14:35 -0400)]
Merge branch 'rhashtable-cleanups'
Herbert Xu says:
====================
rhashtable hash cleanups
This is a rebase on top of the nested lock annotation fix.
Nothing to see here, just a bunch of simple clean-ups before
I move onto something more substantial (hopefully).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 12 Mar 2015 03:49:41 +0000 (14:49 +1100)]
rhashtable: Remove obj_raw_hashfn
Now that the only caller of obj_raw_hashfn is head_hashfn, we can
simply kill it and fold it into the latter.
This patch also moves the common shift from head_hashfn/key_hashfn
into rht_bucket_index.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 12 Mar 2015 03:49:40 +0000 (14:49 +1100)]
rhashtable: Remove key length argument to key_hashfn
key_hashfn has only one caller and it doesn't really need to supply
the key length as an extra parameter.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 12 Mar 2015 03:49:39 +0000 (14:49 +1100)]
rhashtable: Use head_hashfn instead of obj_raw_hashfn
Now that we don't have cross-table hashes, we no longer need to
keep the entire hash value so all users of obj_raw_hashfn can
use head_hashfn instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 12 Mar 2015 03:49:38 +0000 (14:49 +1100)]
rhashtable: Move masking back into key_hashfn
This patch reverts commit
c88455ce50ae4224d84960ce2baa53e61580df27
("rhashtable: key_hashfn() must return full hash value") because
the only user of it always masks the hash value.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcel Holtmann [Thu, 12 Mar 2015 00:47:40 +0000 (17:47 -0700)]
Bluetooth: Remove two else branches that are not needed
The SMP code contains two else branches that are not needed since the
successful test will actually leave the function.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Julia Lawall [Wed, 11 Mar 2015 16:56:25 +0000 (17:56 +0100)]
net/mlx5_core: don't export static symbol
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
type T;
identifier f;
@@
static T f (...) { ... }
@@
identifier r.f;
declarer name EXPORT_SYMBOL;
@@
-EXPORT_SYMBOL(f);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 12 Mar 2015 03:47:13 +0000 (14:47 +1100)]
rhashtable: Add annotation to nested lock
Commit
aa34a6cb0478842452bac58edb50d3ef9e178c92 ("rhashtable:
Add arbitrary rehash function") killed the annotation on the
nested lock which leads to bitching from lockdep.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 03:27:52 +0000 (20:27 -0700)]
net: fix CONFIG_NET_NS=n compilation
I forgot to use write_pnet() in three locations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes:
33cf7c90fe2f9 ("net: add real socket cookies")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lubomir Rintel [Wed, 11 Mar 2015 14:39:21 +0000 (15:39 +0100)]
ipv6: expose RFC4191 route preference via rtnetlink
This makes it possible to retain the route preference when RAs are handled in
userspace.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simon Horman [Thu, 12 Mar 2015 01:42:50 +0000 (10:42 +0900)]
switchdev: correct spelling of notifier in comments
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simon Horman [Thu, 12 Mar 2015 02:00:10 +0000 (11:00 +0900)]
vxlan: Correct path typo in comment
Flags are used in the return path rather than the return patch.
Fixes:
af33c1adae1e ("vxlan: Eliminate dependency on UDP socket in transmit path")
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Mar 2015 01:53:14 +0000 (18:53 -0700)]
net: add real socket cookies
A long standing problem in netlink socket dumps is the use
of kernel socket addresses as cookies.
1) It is a security concern.
2) Sockets can be reused quite quickly, so there is
no guarantee a cookie is used once and identify
a flow.
3) request sock, establish sock, and timewait socks
for a given flow have different cookies.
Part of our effort to bring better TCP statistics requires
to switch to a different allocator.
In this patch, I chose to use a per network namespace 64bit generator,
and to use it only in the case a socket needs to be dumped to netlink.
(This might be refined later if needed)
Note that I tried to carry cookies from request sock, to establish sock,
then timewait sockets.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Eric Salo <salo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 11 Mar 2015 23:36:08 +0000 (16:36 -0700)]
fib_trie: Only display main table in /proc/net/route
When we merged the tries for local and main I had overlooked the iterator
for /proc/net/route. As a result it was outputting both local and main
when the two tries were merged.
This patch resolves that by only providing output for aliases that are
actually in the main trie. As a result we should go back to the original
behavior which I assume will be necessary to maintain legacy support.
Fixes:
0ddcf43d5 ("ipv4: FIB Local/MAIN table collapse")
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 11 Mar 2015 21:56:39 +0000 (17:56 -0400)]
Merge branch 'dsa_phy_divert'
Florian Fainelli says:
====================
net: dsa: support PHY reads/writes diversion
This patch series completes the PHY reads/writes diversion when we need to use
the slave MII bus provided by DSA and the underlying switch drivers to
implement the real PHY reads and writes. This is particularly useful when they
are conflicting MDIO bus addresses as in the case of multiple Broadcom switches
connected to each other (internal and external, or just external).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 10 Mar 2015 23:57:13 +0000 (16:57 -0700)]
net: dsa: fully divert PHY reads/writes if requested
In case a PHY is found via Device Tree, and is also flagged by the
switch driver as needing indirect reads/writes using the switch driver
implemented MDIO bus, make sure that we bind this PHY to the slave MII
bus in order for this to happen.
Without this, we would succeed in having the PHY driver probe()'s
function to use slave MII bus read/write functions, because this is done
during dsa_slave_mii_init(), but past that point, the PHY driver would
not go through these diverted reads and writes.
Fixes:
0d8bcdd383b88 ("net: dsa: allow for more complex PHY setups")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 10 Mar 2015 23:57:12 +0000 (16:57 -0700)]
net: dsa: move PHY setup on DSA MII bus to its own function
In preparation for dealing with indirect reads and writes towards
certain PHY devices, move the code which deals with binding the PHY
device to the slave MII bus created by DSA to its own function:
dsa_slave_phy_connect().
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 10 Mar 2015 23:57:11 +0000 (16:57 -0700)]
of: mdio: export of_mdio_parse_addr
Export of_mdio_parse_addr() which allows parsing a given Ethernet PHY
node MDIO address, verify it is within the allowed range, and return
its value. This is going to be useful for the DSA code which needs to
deal with multiple layers of MDIO buses.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petri Gynther [Tue, 10 Mar 2015 22:55:00 +0000 (15:55 -0700)]
net: bcmgenet: collect Rx discarded packet count
Bits 31:16 of RDMA_PROD_INDEX contain Rx discarded packet count, which
are the Rx packets that had to be dropped by MAC hardware since there
was no room on the Rx queue. Add code to collect this information into
the netdev stats.
Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 11 Mar 2015 21:02:16 +0000 (14:02 -0700)]
fib_trie: Fix uninitialized variable warning
The 0-day kernel test infrastructure reported a use of uninitialized
variable warning for local_table due to the fact that the local and main
allocations had been swapped from the original setup. This change corrects
that by making it so that we free the main table if the local table
allocation fails.
Fixes:
0ddcf43d5 ("ipv4: FIB Local/MAIN table collapse")
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Tue, 10 Mar 2015 20:03:54 +0000 (21:03 +0100)]
fib_trie: call fib_table_flush_external under RTNL
Move rtnl_lock() before the call to fib4_rules_exit so that
fib_table_flush_external is called under RTNL.
Fixes:
104616e74e0b ("switchdev: don't support custom ip rules, for now")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Robert Shearman [Tue, 10 Mar 2015 16:37:59 +0000 (16:37 +0000)]
mpls: Allow mpls_gso and mpls_router to be built as modules
CONFIG_MPLS=m doesn't result in a kernel module being built because it
applies to the net/mpls directory, rather than to .o files.
So revert the MPLS menuitem to being a boolean and make MPLS_GSO and
MPLS_ROUTING tristates to allow mpls_gso and mpls_router modules to be
produced as desired.
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shaohui Xie [Tue, 10 Mar 2015 10:31:12 +0000 (18:31 +0800)]
net/fsl: remove dependency FSL_SOC from MDIO
FSL_PQ_MDIO and FSL_XGMAC_MDIO are not really depend on FSL_SOC, they
can build on non-PPC platforms.
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 10 Mar 2015 22:43:48 +0000 (09:43 +1100)]
rhashtable: Add arbitrary rehash function
This patch adds a rehash function that supports the use of any
hash function for the new table. This is needed to support changing
the random seed value during the lifetime of the hash table.
However for now the random seed value is still constant and the
rehash function is simply used to replace the existing expand/shrink
functions.
[ ASSERT_BUCKET_LOCK() and thus debug_dump_table() +
debug_dump_buckets() are not longer used, so delete them
entirely. -DaveM ]
Signed-off-by: Herbert Xu <herbert.xu@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Mon, 9 Mar 2015 22:27:55 +0000 (09:27 +1100)]
rhashtable: Move hash_rnd into bucket_table
Currently hash_rnd is a parameter that users can set. However,
no existing users set this parameter. It is also something that
people are unlikely to want to set directly since it's just a
random number.
In preparation for allowing the reseeding/rehashing of rhashtable,
this patch moves hash_rnd into bucket_table so that it's now an
internal state rather than a parameter.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Fri, 6 Mar 2015 21:47:00 +0000 (13:47 -0800)]
ipv4: FIB Local/MAIN table collapse
This patch is meant to collapse local and main into one by converting
tb_data from an array to a pointer. Doing this allows us to point the
local table into the main while maintaining the same variables in the
table.
As such the tb_data was converted from an array to a pointer, and a new
array called data is added in order to still provide an object for tb_data
to point to.
In order to track the origin of the fib aliases a tb_id value was added in
a hole that existed on 64b systems. Using this we can also reverse the
merge in the event that custom FIB rules are enabled.
With this patch I am seeing an improvement of 20ns to 30ns for routing
lookups as long as custom rules are not enabled, with custom rules enabled
we fall back to split tables and the original behavior.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Johan Hedberg [Wed, 11 Mar 2015 08:52:08 +0000 (10:52 +0200)]
Bluetooth: Check for matching IRK when looking for paired LE devices
If we're given an RPA when checking whether we're paired or not, we
should consult the local RPA storage whether there's a matching IRK.
This we we ensure that hci_bdaddr_is_paired() gives the right result
even when trying to pair a second time with the same device with an RPA.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Wed, 11 Mar 2015 06:55:51 +0000 (08:55 +0200)]
Bluetooth: Fix missing rcu_read_unlock() in hci_bdaddr_is_paired()
When finding a matching LTK the rcu_read_unlock() function was failing
to release the RCU read lock. This patch adds the missing call to
rcu_reaD_unlock().
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Tue, 10 Mar 2015 21:04:52 +0000 (14:04 -0700)]
Bluetooth: Increment management interface revision
This patch increments the management interface revision due to
introduction of new static address setting and fixes for the
fast connectable feature.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Kim, Ben Young Tae [Tue, 10 Mar 2015 23:34:58 +0000 (23:34 +0000)]
Bluetooth: btusb: Fix incorrect type in qca_device_info
While qca_device_info is not coming from outside communication,
no reason to use specific endian type inside and fix the wrong
version comparison on big-endian platform.
Signed-off-by: Ben Young Tae Kim <ytkim@qca.qualcomm.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Jon Paul Maloy [Tue, 10 Mar 2015 16:23:34 +0000 (12:23 -0400)]
tipc: ensure that idle links are deleted when a bearer is disabled
commit
afaa3f65f65fda2e7b190aac7e2a75d9a2a77cb6
(tipc: purge links when bearer is disabled) was an attempt to resolve
a problem that turned out to have a more profound reason.
When we disable a bearer, we delete all its pertaining links if
there is no other bearer to perform failover to, or if the module
is shutting down. In case there are dual bearers, we wait with
deleting links until the failover procedure is finished.
However, this misses the case when a link on the removed bearer
was already down, so that there will be no failover procedure to
finish the link delete. This causes confusion if a new bearer is
added to replace the removed one, and also entails a small memory
leak.
This commit takes the current state of the link into account when
deciding when to delete it, and also reverses the above-mentioned
commit.
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Tue, 10 Mar 2015 21:39:34 +0000 (14:39 -0700)]
fib_trie: Address possible NULL pointer dereference in resize
If the inflate call failed it would return NULL. As a result tp would be
set to NULL and cause use to trigger a NULL pointer dereference in
should_halve if the inflate failed on the first attempt.
In order to prevent this we should decrement max_work before we actually
attempt to inflate as this will force us to exit before attempting to halve
a node we should have inflated. In order to keep things symmetric between
inflate and halve I went ahead and also moved the decrement of max_work for
the halve case as well so we take care of that before we actually attempt
to halve the tnode.
Fixes:
88bae714 ("fib_trie: Add key vector to root, return parent key_vector in resize")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Rothwell [Tue, 10 Mar 2015 22:33:49 +0000 (18:33 -0400)]
macb: Fix merge error.
The code removed by commit
421d9df0628b ("net/macb: merge
at91_ether driver into macb driver") should be removed
in the merge resolution as well.
Signed-off-by: David S. Miller <davem@davemloft.net>
Johan Hedberg [Tue, 10 Mar 2015 20:34:40 +0000 (22:34 +0200)]
Bluetooth: Add 'Already Paired' error for Pair Device command
To make the behavior predictable when attempting to pair with a device
for which we already have a Link Key or Long Term Key, this patch adds a
new 'Already Paired' error which gets sent in such a scenario.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Duyck [Tue, 10 Mar 2015 18:25:41 +0000 (11:25 -0700)]
fib_trie: Correctly handle case of key == 0 in leaf_walk_rcu
In the case of a trie that had no tnodes with a key of 0 the initial
look-up would fail resulting in an out-of-bounds cindex on the first tnode.
This resulted in an entire trie being skipped.
In order resolve this I have updated the cindex logic in the initial
look-up so that if the key is zero we will always traverse the child zero
path.
Fixes:
8be33e95 ("fib_trie: Fib walk rcu should take a tnode and key instead of a trie and a leaf")
Reported-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Tested-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Johan Hedberg [Tue, 10 Mar 2015 18:14:27 +0000 (20:14 +0200)]
Bluetooth: Make Fast Connectable available while powered off
To maximize the usability of the Fast Connectable feature we should make
it possible to set (or unset) it at any given moment. This means
removing the dependency on the 'connectable' setting as well as the
'powered' setting. The former makes also sense since page scan may get
enabled through add_device even if 'connectable' is false. To keep the
setting available over power cycles its flag also needs to be removed
from the flags that are cleared upon HCI_Reset.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
David S. Miller [Tue, 10 Mar 2015 17:45:33 +0000 (13:45 -0400)]
Merge branch 'inet_diag_cleanups'
Eric Dumazet says:
====================
inet_diag: cleanups and improvements
Before changing way request socks are dumped, let's clean up this code
a bit.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 10 Mar 2015 14:15:54 +0000 (07:15 -0700)]
inet_diag: add const to inet_diag_req_v2
diag dumpers should not modify the request.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 10 Mar 2015 14:15:53 +0000 (07:15 -0700)]
inet_diag: cleanups
Remove all inline keywords, add some const, and cleanup style.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 10 Mar 2015 14:15:52 +0000 (07:15 -0700)]
net: constify sock_diag_check_cookie()
sock_diag_check_cookie() second parameter is constant
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Tue, 10 Mar 2015 03:56:53 +0000 (04:56 +0100)]
drivers: atm: nicstar: remove ifdef'd out skb destructors
remove dead code.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 10 Mar 2015 16:48:47 +0000 (12:48 -0400)]
Merge git://git./linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:
====================
Netfilter fixes for net-next
The following batch contains a couple of fixes to address some fallout
from the previous pull request, they are:
1) Address link problems in the bridge code after
e5de75b. Fix it by
using rcu hook to address to avoid ifdef pollution and hard
dependency between bridge and br_netfilter.
2) Address sparse warnings in the netfilter reject code, patch from
Florian Westphal.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>