Commit Graph

456329 Commits

Author SHA1 Message Date
John W. Linville
95d01a669b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2014-07-11 15:52:57 -04:00
David S. Miller
5e6438db34 Merge branch 'mvebu'
Ezequiel Garcia says:

====================
Network driver for Armada 375 SoC

This is the fourth round of the Armada 375 network support patchset. I've
tried to address all the feedback provided for last version and I hope the
driver looks better now.

If there's nothing else to fix, we'd like to merge this for v3.17. The first
patch should go through the network tree, and the other patches through
the mvebu tree.

Thanks a lot for all the great review, and feel free to comment some more!

Changes from v3:

  * Further optimization of the MTU, MAC and ring parameter change to make
    it smoothier.

  * Lots of cleanups in the parser configuration code, most of them addressing
    the feedback from Francois. This include fixing: missing curly braces,
    excessive parenthesis, excessive scope, and making several functions
    more readable.

  * Removed the Rx/Tx queue number module parameter. There's no reason to
    use any other than the default hardware-defined value.

Changes from v2:

  * Reworked mvpp2_prs_tcam_first_free() as suggested by Joe and Francois,
    to have a single loop instead of two.

  * Replaced mvpp2_cpu_interrupts_enable/disable(pp, cpu) with one function
    that enables/disable interrupts on all the CPUs at once.

  * Factor out Tx descriptor DMA unmap + descriptor put sequence to have
    more readable code, as suggested by Francois.

  * Remove redundant netif_running() checks in the ingress and egress path,
    as suggested by Francois.

  * Reworked ring parameter, MTU and MAC address setting to produce a
    more gentle modification of the parameter, and have a fallback in the
    event of a failure.

  * Fixed a percpu memory leak on error path, also noted by Francois.

  * Removed the usage of the legacy net_device irq field, requested by
    Francois.

  * Removed the unneeded multiple Tx port support. It was hardcoded to a single
    Tx port in the previous version so we decided to drop it and simplify the
    code.

  * Optimize the on_each_cpu() calls to clear the sent counters and the
    TX_DONE pkts coalescing setting. on_each_cpu is expensive so it's better
    to minize the calls to it.

Changes from v1:

  * Marcin Wojtas is the author of the driver, so I fixed authorship
    for patch 1/3:
    "ethernet: Add new driver for Marvell Armada 375 network unit"

This patchset adds a new network driver to support the network controller
in Armada 375 SoC.

The network interfaces share a common hardware unit called Packet Processor,
which contains a common register space and per-port register spaces.

The new network unit has different RXQ and TXQ management. The ports
associate so-called per-port "logical queues" which are mapped to "physical
queues". The latter are shared among the ports.

Fo the egress part, the mapping for each port is predefined by hardware.
The egress path incorporates so-called aggregation queues (one per CPU),
from where the data is passed to the physical queues and then via prefetch
buffer to the TxDMA.

The ingress path has a Parser and Classifier (PnC) and a Buffer Manager (BM)
whose usage is obligatory. We are only implementing a simple configuration
for the Parser and Classifier, yet the code is considerably large.

This network unit has other optional features like xPON, WoL, Hardware
Forwarding, and more. This initial commit doesn't provide support for these.

The mvpp2 network driver has been written by Marcin Wojtas and then reviewed
and cleaned up by Ezequiel Garcia.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 17:19:38 -07:00
Marcin Wojtas
3f518509de ethernet: Add new driver for Marvell Armada 375 network unit
This commit adds a new network driver for the network controller in Marvell
Armada 375 SoC.

Given the controller is very different from the ones in the other Marvell
SoCs that use the mv643xx_eth (Kirkwood, Orion, Discovery) and mvneta
(Armada 370/38x/XP) drivers, a new driver is needed.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
[Ezequiel: coding style cleanup]
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 17:18:24 -07:00
Li RongQing
b642881719 ipv6: fix the check when handle RA
d9333196572(ipv6:  Allow accepting RA from local IP addresses.) made the wrong
check, whether or not to accept RA with source-addr found on local machine, when
accept_ra_from_local is 0.

Fixes: d9333196572(ipv6:  Allow accepting RA from local IP addresses.)
Cc: Ben Greear <greearb@candelatech.com>
Cc: Hannes Frederic Sowa <hannes@redhat.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 16:56:33 -07:00
Varka Bhadram
ff32045e7a net: cpmac: fix in debug messages
This patch fix the debug message format. This patch changes to the
commit f160a2d0b5: net: cpmac: dynamic debug fixes

When we use pr_debug()/netdev_dbg() new lines are inserting in b/w
the values. The format when i use the printk()

These formats used in skb dump and reg dump. This functions
called from the entire code. So this will be enabled all the lines.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 16:55:22 -07:00
John W. Linville
ca424b2022 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2014-07-10 17:00:34 -04:00
John W. Linville
5c4d5e816c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-07-10 17:00:24 -04:00
David S. Miller
51b5bd199a Merge branch 'bridge-fdb-dump-filter'
Jamal Hadi Salim says:

====================
bridge: fdb dumping takes a filter device

v7:
Vxlan driver was not updated with new API. Found by DaveM

v6:
Missed checkpatch > 80 chars lines found by Varka Bhadram

v5:
 Embarassing qlnic compile failure found by DaveM

v4:
 Request from DaveM to use proper comment tagging and remove if-stmnt braces

V3:
 Suggestion from Eric D. to use for_each_netdev
 Suggestion from Stephen H. to reduce level of indentation

V2:
Suggestions from Vlad
 Get rid of rcu read lock since rtnl_lock is being held
 simplify for readability
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 12:38:07 -07:00
Jamal Hadi Salim
5e6d243587 bridge: netlink dump interface at par with brctl
Actually better than brctl showmacs because we can filter by bridge
port in the kernel.
The current bridge netlink interface doesnt scale when you have many
bridges each with large fdbs or even bridges with many bridge ports

And now for the science non-fiction novel you have all been
waiting for..

//lets see what bridge ports we have
root@moja-1:/configs/may30-iprt/bridge# ./bridge link show
8: eth1 state DOWN : <BROADCAST,MULTICAST> mtu 1500 master br0 state
disabled priority 32 cost 19
17: sw1-p1 state DOWN : <BROADCAST,NOARP> mtu 1500 master br0 state
disabled priority 32 cost 100

// show all..
root@moja-1:/configs/may30-iprt/bridge# ./bridge fdb show
33:33:00:00:00:01 dev bond0 self permanent
33:33:00:00:00:01 dev dummy0 self permanent
33:33:00:00:00:01 dev ifb0 self permanent
33:33:00:00:00:01 dev ifb1 self permanent
33:33:00:00:00:01 dev eth0 self permanent
01:00:5e:00:00:01 dev eth0 self permanent
33:33:ff:22:01:01 dev eth0 self permanent
02:00:00:12:01:02 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:05 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:07 dev eth1 self permanent
33:33:00:00:00:01 dev eth1 self permanent
33:33:00:00:00:01 dev gretap0 self permanent
da:ac:46:27:d9:53 dev sw1-p1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent

//filter by bridge
root@moja-1:/configs/may30-iprt/bridge# ./bridge fdb show br br0
02:00:00:12:01:02 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:05 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:07 dev eth1 self permanent
33:33:00:00:00:01 dev eth1 self permanent
da:ac:46:27:d9:53 dev sw1-p1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent

// bridge sw1 has no ports attached..
root@moja-1:/configs/may30-iprt/bridge# ./bridge fdb show br sw1

//filter by port
root@moja-1:/configs/may30-iprt/bridge# ./bridge fdb show brport eth1
02:00:00:12:01:02 vlan 0 master br0 permanent
00:17:42:8a:b4:05 vlan 0 master br0 permanent
00:17:42:8a:b4:07 self permanent
33:33:00:00:00:01 self permanent

// filter by port + bridge
root@moja-1:/configs/may30-iprt/bridge# ./bridge fdb show br br0 brport
sw1-p1
da:ac:46:27:d9:53 vlan 0 master br0 permanent
33:33:00:00:00:01 self permanent

// for shits and giggles (as they say in New Brunswick), lets
// change the mac that br0 uses
// Note: a magical fdb entry with no brport is added ...
root@moja-1:/configs/may30-iprt/bridge# ip link set dev br0 address
02:00:00:12:01:04

// lets see if we can see the unicorn ..
root@moja-1:/configs/may30-iprt/bridge# ./bridge fdb show
33:33:00:00:00:01 dev bond0 self permanent
33:33:00:00:00:01 dev dummy0 self permanent
33:33:00:00:00:01 dev ifb0 self permanent
33:33:00:00:00:01 dev ifb1 self permanent
33:33:00:00:00:01 dev eth0 self permanent
01:00:5e:00:00:01 dev eth0 self permanent
33:33:ff:22:01:01 dev eth0 self permanent
02:00:00:12:01:02 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:05 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:07 dev eth1 self permanent
33:33:00:00:00:01 dev eth1 self permanent
33:33:00:00:00:01 dev gretap0 self permanent
02:00:00:12:01:04 dev br0 vlan 0 master br0 permanent <=== there it is
da:ac:46:27:d9:53 dev sw1-p1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent

//can we see it if we filter by bridge?
root@moja-1:/configs/may30-iprt/bridge# ./bridge fdb show br br0
02:00:00:12:01:02 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:05 dev eth1 vlan 0 master br0 permanent
00:17:42:8a:b4:07 dev eth1 self permanent
33:33:00:00:00:01 dev eth1 self permanent
02:00:00:12:01:04 dev br0 vlan 0 master br0 permanent <=== there it is
da:ac:46:27:d9:53 dev sw1-p1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 12:37:33 -07:00
Jamal Hadi Salim
5d5eacb34c bridge: fdb dumping takes a filter device
Dumping a bridge fdb dumps every fdb entry
held. With this change we are going to filter
on selected bridge port.

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 12:37:33 -07:00
hayeswang
69b4b7a414 r8152: support jumbo frame for RTL8153
The maximum jumbo frame size for RTL8153 is 9K bytes.
Change the max rx packet size to 9K.
Change the use of the shared fifo from 6K (default) to 12K for tx.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:42:23 -07:00
David S. Miller
d670079070 Merge branch 'cpmac-next'
Varka Bhadram says:

====================
This patch series cleanup for AR7 CPMAC Ethernet controller driver
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:41:06 -07:00
Varka Bhadram
0465be8f4f net: cpmac: fix in releasing resources
before registering the the net device this code freeing net device
by using the label 'fail'

fixed by introducing an another label 'out'

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:40:37 -07:00
Varka Bhadram
55064efd24 net: cpmac: fix proper spacing before return statement
This patch insert proper spaces before return statement.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:40:37 -07:00
Varka Bhadram
59329d8bc4 net: cpmac: fix missing a blank line after declarations
This patch insert a blank line after declaration

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:40:37 -07:00
Varka Bhadram
96a8d3c141 net: cpmac: fix cpmac driver structure
This patch changes to style of declarattion which follows every driver

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:40:37 -07:00
Varka Bhadram
f160a2d0b5 net: cpmac: dynamic debug fixes
This patch does the following changes
1. convert printk(KERN_DEBUG.. to netdev_dbg() if we have net_device object
   or convert to dev_dbg() if we have device object.
2. convert printk(KERN_WARNING.. to netdev_warn() if we have net_device object
   or convert to dev_warn() if we have device object
3. convert printk() to pr_*

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:40:36 -07:00
Varka Bhadram
8bcd5c6d51 net: cpmac: fix comments
This patch convert the normal comments to networking subsystem
style comments.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:40:36 -07:00
Varka Bhadram
af59515451 net: cpmac: remove space in macro defination
This patch fix the space after '#' in macro defination

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-10 00:40:36 -07:00
David S. Miller
405fd70719 ipconfig: Only bootp paths should reference ic_dev_xid.
It is only tested, and declared, in the bootp code.

So, in ic_dynamic() guard it's setting with IPCONFIG_BOOTP.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 22:25:18 -07:00
David S. Miller
5edbf7dfea Merge branch 'systemport-next'
Florian Fainelli says:

====================
net: systemport: checkpatch fixes

These two patches fixes the multiple line alignment issues and
kzalloc on array reported by checkpatch.pl
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 18:20:23 -07:00
Florian Fainelli
40a8a317a0 net: systemport: use kcalloc instead of kzalloc
checkpatch.pl flagged two uses of kzalloc() for allocating and zeroing
arrays, use kcalloc() instead as recommended.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 18:19:54 -07:00
Florian Fainelli
23acb2fc32 net: systemport: align multiple lines correctly
checkpatch.pl flagged a bunch of: "CHECK: Alignment should match open
parenthesis" problems, fix all of them.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 18:19:53 -07:00
Richard Weinberger
316158feff hyperv: Add netpoll support
In order to have at least a netconsole to debug kernel issues on
Windows Azure this patch implements netpoll support.
Sending packets is easy, netvsc_start_xmit() does already everything
needed.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 16:52:49 -07:00
Tobias Klauser
917ac48d94 arc_emac: Remove unused pointer to net_device from arc_emac_priv
The pointer to the struct net_device in the private data is only
assigned but never used, so delete it.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 16:49:21 -07:00
Tobias Klauser
ff458f6f1e arc_emac: Use net_device_stats from struct net_device
Instead of using a private copy of struct net_device_stats in struct
arc_emac_priv, use stats from struct net_device.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 16:48:35 -07:00
Fabian Frederick
21621e93f2 ipconfig: move ic_dev_xid under IPCONFIG_BOOTP
ic_dev_xid is only used in __init ic_bootp_recv under IPCONFIG_BOOTP
and __init ic_dynamic under IPCONFIG_DYNAMIC(which is itself defined
with the same IPCONFIG_BOOTP)

This patch fixes the following warning when IPCONFIG_BOOTP is not set:
>> net/ipv4/ipconfig.c:146:15: warning: 'ic_dev_xid' defined but not used [-Wunused-variable]
    static __be32 ic_dev_xid;  /* Device under configuration */

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: netdev@vger.kernel.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-09 14:32:54 -07:00
Marcel Holtmann
6fea7ad1d3 Bluetooth: Don't send ERTM configuration option when disabled
When ERTM support is disabled, then do not even send ERTM configuration
option even if the remote side supports it.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-07-09 13:53:36 +03:00
Johan Hedberg
91a668b056 Bluetooth: Fix setting HCI_CONNECTABLE from ioctl code
When the white list is in use the code would not update the
HCI_CONNECTABLE flag if it gets changed through the ioctl code (e.g.
hciconfig hci0 pscan). Since the flag is important for properly
accepting incoming connections add code to fix it up if necessary and
emit a New Settings mgmt event.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:30:18 +02:00
Johan Hedberg
a55bd29d52 Bluetooth: Add white list lookup for incoming connection requests
This patch adds support for looking up entries in the white list when
HCI_CONNECTABLE is not set. The logic is fairly simple: if we're
connectable check the black list, if we're not connectable check the
white list.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:25:27 +02:00
Johan Hedberg
6cebb9e73a Bluetooth: Enable page scan also if there are white list entries
Page scan should be enabled either if the connectable setting is set or
if there are any entries in the BR/EDR white list. This patch implements
such behavior by updating the two places that were making decisions on
whether to enable page scan or not.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:25:27 +02:00
Johan Hedberg
70c4642563 Bluetooth: Refactor connection request handling
The conditions for accepting an incoming connections are already
non-trivial and will become more so once a white list is added. This
patch breaks up the checks for when to reject the request by creating a
helper function for it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:25:27 +02:00
Johan Hedberg
dee58c1ed5 Bluetooth: Fix incorrectly setting HCI_CONNECTABLE
Since page scan might be enabled by Add Device we should not implicitly
set connectable whenever something else than Set Connectable changes it.
This patch makes sure that we don't set HCI_CONNECTABLE for these cases
if there are any entries in the white list.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:25:27 +02:00
Johan Hedberg
a397407f26 Bluetooth: Update page scan when necessary for Add/Remove Device
When we're removing the last item in the white list or adding the first
one to it and HCI_CONNECTABLE is not set we need to update the current
page scan. This patch adds a simple helper function for the purpose and
calls it from the respective mgmt command handlers.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:25:27 +02:00
Johan Hedberg
6659358efe Bluetooth: Introduce a whitelist for BR/EDR devices
This patch extends the Add/Remove device commands by letting user space
pass BR/EDR addresses to them. The resulting entries get stored in a new
hdev->whitelist list. The idea is that we can now selectively accept
connections from devices in the list even though HCI_CONNECTABLE is not
set (the actual implementation of this is coming in a subsequent patch).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:25:27 +02:00
Johan Hedberg
dcc36c16c2 Bluetooth: Unify helpers for bdaddr_list manipulations
We already have several lists with struct bdaddr_list entries, and there
will be more in the future. Since the operations for adding, removing,
looking up and clearing entries in these lists are exactly the same it
doesn't make sense to define new functions for every single list. This
patch unifies the functions by passing the list_head to them instead of
a hci_dev pointer.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-07-09 12:25:26 +02:00
Marcel Holtmann
cd7ca0ec5e Bluetooth: Fix enabling Authenticated Payload Timeout Expired event
The Authenticated Payload Timeout Expired event is valid for
controllers with BR/EDR Secure Connections support, but also for
LE only controllers supporting LE Ping feature. When either of them
is available enable this event. Previous it was not enabled when
the controller was only supporting LE operation.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-07-09 11:19:15 +03:00
Florian Fainelli
ca12769748 net: phy: export phy_suspend and phy_resume
phy_suspend and phy_resume are two commonly used helper functions that
need to be exported for Ethernet drivers to be built as modules

Fixes: 40755a0fce ("net: systemport: add suspend and resume support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 21:06:50 -07:00
David S. Miller
f251f4e37c Merge branch 'fec-next'
Russell King says:

====================
Freescale ethernet driver updates (part 3)

Here's the third batch of patches for the Freescale FEC ethernet driver,
based upon the previous set of patches.  This concludes the changes I
currently have prepared and have been reviewed for the next merge window
at this time.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:51 -07:00
Russell King
bfd4ecdd87 net: fec: consolidate hwtstamp implementation
Both transmit and receive use the same infrastructure for calculating
the packet timestamp.  Rather than duplicating the code, provide a
function to do this common work.  Model this function in the Intel
e1000e version which avoids calling ns_to_ktime() within the spinlock;
the spinlock is critical for timecounter_cyc2time() but not
ns_to_ktime().

Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:46 -07:00
Russell King
96018f52c5 net: fec: remove useless status check in tx reap path
Remove a useless status check in the transmit reap path - we have
already checked that the BD_ENET_TX_READY bit is clear, and as the
hardware only ever clears this bit, there is no way this test can ever
be true.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:46 -07:00
Russell King
344756f6e3 net: fec: add support for dumping transmit ring on timeout
When we timeout on transmit, it would be useful to dump the transmit
ring, so we can see the ring state.  This can be helpful to diagnose
the cause of transmit timeouts.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:46 -07:00
Russell King
c1d7c48ff7 net: fec: reorder ethtool ops to match order in struct declaration
This allows us to merge two separate preprocessor conditionals together.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:46 -07:00
Russell King
db3421c114 net: fec: clear receive interrupts before processing a packet
Clear any pending receive interrupt before we process a pending packet.
This helps to avoid any spurious interrupts being raised after we have
fully cleaned the receive ring, while still allowing an interrupt to be
raised if we receive another packet.

The position of this is critical: we must do this prior to reading the
next packet status to avoid potentially dropping an interrupt when a
packet is still pending.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:46 -07:00
Russell King
36cdc743a3 net: fec: replace delayed work with standard work
As of "better implementation of iMX6 ERR006358 quirk", we no longer have
a requirement for a delayed work.  Moreover, the work is now only used
for timeout purposes, so the timeout flag is also pointless - we set it
each time we queue the work, and the work clears it.

Replace the fec_enet_delayed_work struct with a standard work_struct,
resulting in simplified timeout handling code.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:46 -07:00
Russell King
ccea296839 net: fec: better implementation of iMX6 ERR006358 quirk
Using a (delayed) workqueue for ERR006358 is not correct - a work queue
is a single-trigger device.  Once the work queue has been scheduled, it
can't be re-scheduled until it has been run.  This can cause problems -
with an appropriate packet timing, we can end up with packets queued,
but not sent by the hardware, resulting in the transmit timeout firing.

Re-implement this as per the workaround detailed in the ERR006358
documentation - if there are packets waiting to be sent when we service
the transmit ring, and we see that the transmitter is not running,
kick the transmitter to run the pending entries in the ring.

Testing here with a 10Mbit half duplex link sees the resulting iperf
TCP bandwidth increase from between 1 to 2Mbps to between 8 to 9Mbps.

Acked-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:57:45 -07:00
david decotigny
efa95b01da netpoll: fix use after free
After a bonding master reclaims the netpoll info struct, slaves could
still hold a pointer to the reclaimed data. This patch fixes it: as
soon as netpoll_async_cleanup is called for a slave (eg. when
un-enslaved), we make sure that this slave doesn't point to the data.

Signed-off-by: David Decotigny <decot@googlers.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:50:53 -07:00
Zoltan Kiss
f51de24356 xen-netback: Adding debugfs "io_ring_qX" files
This patch adds debugfs capabilities to netback. There used to be a similar
patch floating around for classic kernel, but it used procfs. It is based on a
very similar blkback patch.
It creates xen-netback/[vifname]/io_ring_q[queueno] files, reading them output
various ring variables etc. Writing "kick" into it imitates an interrupt
happened, it can be useful to check whether the ring is just stalled due to a
missed interrupt.

Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: xen-devel@lists.xenproject.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:48:36 -07:00
Florian Fainelli
a37934fc0d net: provide stubs for ip6_set_txhash and ip6_make_flowlabel
Commit cb1ce2ef38 ("ipv6: Implement automatic flow label generation
on transmit") introduced ip6_make_flowlabel, while commit b73c3d0e4f
("net: Save TX flow hash in sock and set in skbuf on xmit") introduced
ip6_set_txhash.

ip6_set_tx_hash() uses sk_v6_daddr which references
__sk_common.skc_v6_daddr from struct sock_common, which is gated with
IS_ENABLED(CONFIG_IPV6).

ip6_make_flowlabel() uses the ipv6 member from struct net which is
also gated with IS_ENABLED(CONFIG_IPV6).

When CONFIG_IPV6 is disabled, we will hit a build failure that looks
like this when the compiler attempts inlining these functions:

  CC [M]  drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.o
In file included from include/net/inet_sock.h:27:0,
                 from include/net/ip.h:30,
                 from drivers/net/ethernet/broadcom/cnic.c:37:
include/net/ipv6.h: In function 'ip6_set_txhash':
include/net/sock.h:327:33: error: 'struct sock_common' has no member named 'skc_v6_daddr'
 #define sk_v6_daddr  __sk_common.skc_v6_daddr
                                 ^
include/net/ipv6.h:696:49: note: in expansion of macro 'sk_v6_daddr'
  keys.dst = (__force __be32)ipv6_addr_hash(&sk->sk_v6_daddr);
                                                 ^
In file included from include/net/inetpeer.h:15:0,
                 from include/net/route.h:28,
                 from include/net/ip.h:31,
                 from drivers/net/ethernet/broadcom/cnic.c:37:
include/net/ipv6.h: In function 'ip6_make_flowlabel':
include/net/ipv6.h:706:37: error: 'struct net' has no member named 'ipv6'
  if (!flowlabel && (autolabel || net->ipv6.sysctl.auto_flowlabels)) {
                                     ^

Fixes: cb1ce2ef38 ("ipv6: Implement automatic flow label generation on transmit")
Fixes: b73c3d0e4f ("net: Save TX flow hash in sock and set in skbuf on xmit")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:43:35 -07:00
David S. Miller
35560392e3 Merge branch 'fec-next'
Russell King says:

====================
Freescale ethernet driver updates (part 2)

Here's the second batch of patches for the Freescale FEC ethernet driver,
based upon the previous set of patches.  One further set of 7 patches
remains.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-08 20:03:05 -07:00