Commit Graph

54313 Commits

Author SHA1 Message Date
Heiko Stübner
df558854cf net: stmmac: dwmac-rk: add rk3368-specific data
Add constants and callback functions for the dwmac on rk3368 socs.
As can be seen, the base structure is the same, only registers and
the bits in them moved slightly.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:49:26 -07:00
Heiko Stübner
0fb98db197 net: stmmac: dwmac-rk: abstract access to mac settings in GRF
The mac settings like RGMII/RMII, speeds etc are done in the so called
"General Register Files", contain numerous other settings as well and
always seem to change between Rockchip SoCs. Therefore abstract the
register accesses into a per-soc ops struct to make this reusable on
other Rockchip SoCs.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:49:25 -07:00
Heiko Stübner
c48fa33c1f net: stmmac: dwmac-rk: Fix clk rate when provided by soc
The first iteration of the dwmac-rk support did access an intermediate
clock directly below the pll selector. This was removed in a subsequent
revision, but the clock and one invocation remained. This results in
the driver trying to set the rate of a non-existent clock when the soc
and not some external source provides the phy clock for RMII phys.

So set the rate of the correct clock and remove the remaining now
completely unused definition.

Fixes: 436f5ae08f9d ("GMAC: add driver for Rockchip RK3288 SoCs integrated GMAC")
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:49:24 -07:00
Heiko Stübner
059dab0833 net: stmmac: dwmac-rk: remove unused gpio register defines
In a first version the driver did want to do some gpio wiggling, which
of course never made it into the kernel, but somehow these register
defines where forgotten. Remove them, as they shouldn't be here.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:49:23 -07:00
Andrew Lunn
db687a56e4 dsa: mv88x6xxx: Zero statistics counters
Zero the statistics counters when setting up the global
registers. Otherwise the counters will remain from the last boot if
the power has not been removed.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:37:17 -07:00
Andrew Lunn
56d95e2220 dsa: mv88x6xxx: Add debugfs interface for scratch registers
Allow the contents of the scratch registers to be shown in debugfs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:33:42 -07:00
Andrew Lunn
d35bd876af dsa: mv88x6xxx: Add debugfs interface for device map
The device map is used to route packets between cascaded switches.
Add dumping a switches device map via debugfs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:33:41 -07:00
Andrew Lunn
532c7a353f dsa: mv88x6xxx: Add debugfs interface for statistics
Allow the contents of the statistics counters to be shown in debugfs.
This is particularly useful for the cpu and dsa ports, which cannot be
seen using ethtools -S.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:33:41 -07:00
Andrew Lunn
80c4627b27 dsa: mv88x6xxx: Refactor getting a single statistic
Move the code to retrieve a statistics counter into a function of its
own, so it can later be reused.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:33:40 -07:00
Andrew Lunn
8a0a265d19 dsa: mv88e6xxx: Add debugfs interface for ATU
Dump the Address Translation Unit via a file in debugfs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:33:40 -07:00
Andrew Lunn
87c8cefb10 dsa: mv88e6xxx: Add debugfs interface for registers
Allow the contents of the registers to be shown in debugfs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:33:39 -07:00
Shreyas Bhatewara
45dac1d6ea vmxnet3: Changes for vmxnet3 adapter version 2 (fwd)
Make the driver understand adapter version 2.

Cc: Rachel Lunnon <rachel_lunnon@stormagic.com>
Signed-off-by: Guolin Yang <gyang@vmware.com>
Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:26:01 -07:00
Shreyas Bhatewara
c41fcce997 vmxnet3: Fix memory leaks in rx path (fwd)
If rcd length was zero, the page used for frag was not being released. It
was being replaced with a newly allocated page. This change takes care
of that memory leak.

Signed-off-by: Guolin Yang <gyang@vmware.com>
Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:26:00 -07:00
Shreyas Bhatewara
e9ba47bfe3 vmxnet3: Register shutdown handler for device (fwd)
Implement a handler for pci shutdown so that the driver has an
opportunity to make sure that device is quiesced before the PCI
switches to legacy IRQs. This way the possibility of
"screaming interrupt" is avoided.

Acked-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:25:59 -07:00
Pankaj Gupta
dfe816c5e3 macvtap: Increase limit of macvtap queues
Macvtap should be compatible with tuntap for
maximum number of queues.

commit 'baf71c5c1f80d82e92924050a60b5baaf97e3094 (tuntap:
Increase the number of queues in tun.)' removes
the limitations and increases number of queues in tuntap.
Now, Its safe to increase number of queues in Macvtap as well.

This patch also modifies 'macvtap_del_queues' function
to avoid extra memory allocation in stack.

Changes from v1->v2 :
Michael S. Tsirkin, Jason Wang  :
                  Better way to use linked list to
avoid use of extra memory in stack.
Sergei Shtylyov : Specify dependent commit's summary.

Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 06:14:04 -07:00
David S. Miller
bfdc8dbdf8 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:

====================
pull request: bluetooth-next 2015-06-18

Here's the final bluetooth-next pull request for 4.2.

 - Cleanups & fixes to 802.15.4 code and related drivers
 - Fix btusb driver memory leak
 - New USB IDs for Atheros controllers
 - Support for BCM4324B3 UART based Broadcom controller
 - Fix for Bluetooth encryption key size handling
 - Broadcom controller initialization fixes
 - Support for Intel controller DDC parameters
 - Support for multiple Bluetooth LE advertising instances
 - Fix for HCI user channel cleanup path

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 03:17:47 -07:00
Mahesh Bandewar
4cd6b47544 bonding: Display LACP info only to CAP_NET_ADMIN capable user
Actor and Partner details can be accessed via proc-fs, sys-fs
entries or netlink interface. These interfaces are world readable
at this moment. The earlier patch-series made the LACP communication
secure to avoid nuisance attack from within the same L2 domain but
it did not prevent "someone unprivileged" looking at that information
on host and perform the same act.

This patch essentially avoids spitting those entries if the user
in question does not have enough privileges.

Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 03:11:52 -07:00
Cyrille Pitchen
5c8fe711c7 net/macb: add config for Atmel sama5d2 SoCs
Add the compatible string for Atmel sama5d2 SoC family as the configuration
options differ from other instances of the GEM.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 01:24:33 -07:00
Shengzhou Liu
3447cf2e9a net/phy: Add support for Realtek RTL8211F
RTL8211F has different register definitions from RTL8211E.
Specially it needs to enable TXDLY in case of RGMII.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 01:06:09 -07:00
David S. Miller
fa433354f0 Major changes:
mwifiex:
 
 * enhancements for AP mode: support verbose information in station
   dump command and also information about AP link.
 * enable power save by default
 
 brcmfmac:
 
 * fix module reload issue for PCIe
 * improving msgbuf protocol for PCIe devices
 * rework .get_station() cfg80211 callback operation
 * determine interface combinations upon device feature support
 
 ath9k:
 
 * ath9k_htc: add support of channel switch
 
 wil6210:
 
 * add modparam for bcast ring size
 * support hidden SSID
 * add per-MCS Rx stats
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Merge tag 'wireless-drivers-next-for-davem-2015-06-18' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
Major changes:

mwifiex:

* enhancements for AP mode: support verbose information in station
  dump command and also information about AP link.
* enable power save by default

brcmfmac:

* fix module reload issue for PCIe
* improving msgbuf protocol for PCIe devices
* rework .get_station() cfg80211 callback operation
* determine interface combinations upon device feature support

ath9k:

* ath9k_htc: add support of channel switch

wil6210:

* add modparam for bcast ring size
* support hidden SSID
* add per-MCS Rx stats
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-23 01:03:18 -07:00
Ivan Vecera
ebb56d37ab bna: remove superfluous parentheses
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 10:29:02 -07:00
Ivan Vecera
558caad749 bna: make pointers to read-only inputs const
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 10:29:01 -07:00
Ivan Vecera
8e8942b1b3 bna: remove unnecessary cast of BIT value
BIT value is already unsigned so casting is not necessary.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 10:29:00 -07:00
Antonio Borneo
b7d3282a24 net: via/Kconfig: replace USE_OF with OF_???
USE_OF is used as intermediate Kconfig option by few
arch's (ARM, MIPS, Xtensa).
Replace instances of USE_OF outside of arch folders
with proper OF_???.

Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 10:05:05 -07:00
Antonio Borneo
ecdd1409ba net: via-rhine: remove unneeded include file
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 10:03:19 -07:00
Hariprasad Shenai
9574dc6457 cxgb4: Add PCI device ID for custom T522 & T520 adapter
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 09:58:13 -07:00
Raghu Vatsavayi
3dc817d212 Modify Liquidio Kconfig for crc lib
Following patch contains changes in liquidio Kconfig for
selecting LIBCRC32C.

Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 09:51:22 -07:00
Kees Cook
92a486ca3a cxgb3: avoid needless buffer copy for firmware
There's no reason to perform a buffer copy for the firmware name. This
also avoids a (currently impossible with current callers) NULL dereference
if there was no matching firmware.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 09:49:55 -07:00
Julien Grall
68946159da net/xen-netback: Don't mix hexa and decimal with 0x in the printf format
Append 0x to all %x in order to avoid while reading when there is other
decimal value in the log.

Also replace some of the hexadecimal print to decimal to uniformize the
format with netfront.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: netdev@vger.kernel.org
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 09:40:41 -07:00
Julien Grall
44f0764cfe net/xen-netback: Remove unused code in xenvif_rx_action
The variables old_req_cons and ring_slots_used are assigned but never
used since commit 1650d5455b "xen-netback:
always fully coalesce guest Rx packets".

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 09:40:40 -07:00
Julien Grall
6c10127d91 net/xen-netfront: Correct printf format in xennet_get_responses
rx->status is an int16_t, print it using %d rather than %u in order to
have a meaningful value when the field is negative.

Also use %u rather than %x for rx->offset.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-21 09:40:40 -07:00
David S. Miller
120119623b Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:

====================
Netfilter updates for net-next

The following patchset contains a final Netfilter pull request for net-next
4.2. This mostly addresses some fallout from the previous pull request, small
netns updates and a couple of new features for nfnetlink_log and the socket
match that didn't get in time for the previous pull request. More specifically
they are:

1) Add security context information to nfnetlink_queue, from Roman Kubiak.

2) Add support to restore the sk_mark into skb->mark through xt_socket,
   from Harout Hedeshian.

3) Force alignment of 16 bytes of per cpu xt_counters, from Eric Dumazet.

4) Rename br_netfilter.c to br_netfilter_hooks.c to prepare split of IPv6 code
   into a separated file.

5) Move the IPv6 code in br_netfilter into a separated file.

6) Remove unused RCV_SKB_FAIL() in nfnetlink_queue and nfetlink_log, from Eric
   Biederman.

7) Two liner to simplify netns logic in em_ipset_match().

8) Add missing includes to net/net_namespace.h to avoid compilation problems
   that result from not including linux/netfilter.h in netns headers.

9) Use a forward declaration instead of including linux/proc_fs.h from
   netns/netfilter.h

10) Add a new linux/netfilter_defs.h to replace the linux/netfilter.h inclusion
    in netns headers.

11) Remove spurious netfilter.h file included in the net tree, also from Eric
    Biederman.

12) Fix x_tables compilation warnings on 32 bits platforms that resulted from
    recent changes in x_tables counters, from Florian Westphal.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-20 15:39:40 -07:00
Eric W Biederman
8f481b50ea netfilter: Remove spurios included of netfilter.h
While testing my netfilter changes I noticed several files where
recompiling unncessarily because they unncessarily included
netfilter.h.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-06-18 21:14:32 +02:00
David S. Miller
b67ea97fcd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
This series contains updates to fm10k only.

Alex provides two fixes for the fm10k, first folds the fm10k_pull_tail()
call into fm10k_add_rx_frag(), this way the fragment does not have to be
modified after it is added to the skb.  The second fixes missing braces
to an if statement.

The remaining patches are from Jacob which contain improvements and fixes
for fm10k.  First fix makes it so that invalid address will simply be
skipped and allows synchronizing the full list to proceed with using
iproute2 tool.  Fixed a possible kernel panic by using the correct
transmit timestamp function.  Simplified the code flow for setting the
IN_PROGRESS bit of the shinfo for an skb that we will be timestamping.
Fix a bug in the timestamping transmit enqueue code responsible for a
NULL pointer dereference and invalid access of the skb list by freeing
the clone in the cases where we did not add it to the queue.  Update the
PF code so that it resets the empty TQMAP/RQMAP regirsters post-VFLR to
prevent innocent VF drivers from triggering malicious driver events.
The SYSTIME_CFG.Adjust direction bit is actually supposed to indicate
that the adjustment is positive, so fix the code to align correctly with
the hardware and documentation.  Cleanup local variable that is no longer
used after a previous refactor of the code.  Fix the code flow so that we
actually clear the enabled flag as part of our removal of the LPORT.

v2:
 - updated patch 07 description based on feedback from Sergei Shtylyov
 - updated patch 09 & 10 to use %d in error message based on feedback
   from Sergei Shtylyov
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-18 03:58:55 -07:00
Romain Perier
d42202dce0 net: stmmac: dwmac-rk: Don't add function name in info or err messages
These kind of informations are only useful for debugging and should not be
displayed in normal modules message.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-18 03:31:39 -07:00
Alexander Duyck
986eec4341 fm10k: Fix missing braces after if statement
While reviewing the code I noticed that one of the commits added an if
statement followed by a for loop, but the if statement was missing the
braces around the loop.  This change corrects the coding style error.

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:41 -07:00
Jacob Keller
ee4373e7d7 fm10k: fix iov_msg_lport_state_pf issue
When a VF issues an LPORT_STATE request to enable a port that is already
enabled, the PF will first disable the VF LPORT. Then it should
re-enable the VF again with the new requested settings. This ensures
that any switch rules are cleared by deleting the LPORT on the switch.
However, the flow is bugged because we actually check if the VF is
enabled at the end, and thus don't re-enable it. Fix the flow so that we
actually clear the enabled flags as part of our removal of the LPORT.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:36 -07:00
Jacob Keller
d18c438884 fm10k: remove err_no reference in fm10k_mbx.c
The reference to err_no was left around after a previous code refactor.
We never use the value, and it doesn't seem to be used in side a hidden
macro reference. Discovered via cppcheck.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:30 -07:00
Jacob Keller
646725a7c9 fm10k: fix incorrect DIR_NEVATIVE bit in 1588 code
The SYSTIME_CFG.Adjust Direction bit is actually supposed to indicate
that the adjustment is positive. Fix the code to align correctly with
hardware and documentation.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:26 -07:00
Jacob Keller
7fef39322c fm10k: pack TLV overlay structures
This patch adds the __attribute__((packed)) indicator to some structures
which are overlayed onto a TLV message. These structures must be packed
as small as possible in order to correctly align when copied into the
mailbox buffer. Without doing so, the receiving mailbox code incorrectly
parses the values and we get invalid message responses from the switch
manager software.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:22 -07:00
Jacob Keller
fba341d5ca fm10k: re-map all possible VF queues after a VFLR
During initialization, the VF counts its rings by walking the TQDLOC
registers. This works only if the TQMAP/RQMAP registers are set to map
all of the out-of-bound rings back to the first one. This allows the VF
to cleanly detect when it has run out of queues. Update the PF code so
that it resets the empty TQMAP/RQMAP registers post-VFLR to prevent
innocent VF drivers from triggering malicious driver events.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:18 -07:00
Jacob Keller
a38488f540 fm10k: force LPORT delete when updating VLAN or MAC address
Currently, we don't notify the switch at all when the PF
administratively sets a new VLAN or MAC address. This causes the old
addresses to remain valid on the switch table. Since the PF is
overriding any configuration done directly by the VF, we choose to
simply re-create the LPORT for the VF. This does mean that all rules for
the VF will be dropped when we set something directly via the PF, but it
prevents some weird issues where the MAC/VLAN table retains some stale
configuration.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:15 -07:00
Jacob Keller
c04ae58e2b fm10k: use dma_set_mask_and_coherent in fm10k_probe
This patch cleans up the use of dma_get_required_mask and uses the
simpler dma_set_mask_and_coherent function instead of doing these as
separate steps.

I removed the dma_get_required_mask call because based on some minimal
testing it appears that either (a) we're not doing the right thing with
the call or (b) we don't need it anyways. If the value returned is
<48bits, we'll end up trying with 48 bits anyways. If it's over 48bits,
fm10k can't support that anyways, and we should try 48bits. If 48bits
fails, we'll fallback to 32bits. This cleans up some very funky code.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:10 -07:00
Jacob Keller
0197cde62a fm10k: trivial fixup message style to include a colon
Also use %d for error values, since printing in hexadecimal is probably
not helpful.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:21:01 -07:00
Jacob Keller
f1f3322eb4 fm10k: remove extraneous NULL check on l2_accel
l2_accel was checked for NULL at the top of fm10k_dfwd_del_station, and
we return if it is not defined. Due to this, we already know it can't be
null here so a separate check is meaningless. Discovered via cppcheck.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:56 -07:00
Jacob Keller
c0e58e93d7 fm10k: use an unsigned int for i in ethtool_get_strings
The value will never be negative, and we use the %u print format. Thus,
use unsigned int for the loop counter. Issue found using cppcheck.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:52 -07:00
Jacob Keller
ec6acb801e fm10k: add call to fm10k_clean_all_rx_rings in fm10k_down
This prevents a memory leak in fm10k_set_ringparams. The leak occurs
because we go down, change ring parameters, and then come up. However,
fm10k_down on its own is not clearing the Rx rings. Since fm10k_up
assumes the rings are clean we basically drop the buffers and leak a
bunch of memory. Eventually we hit dirty page faults and reboot the
system. This issue does not occur elsewhere because other flows that
involve fm10k_down go through fm10k_close which immediately called
fm10k_free_all_rx_resources which properly cleans the rings.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:45 -07:00
Jacob Keller
c23544b196 fm10k: fix incorrect free on skb in ts_tx_enqueue
This patch resolves a bug in the ts_tx_enqueue code responsible for a
NULL pointer dereference and invalid access of the skb list. We
incorrectly freed the actual skb we found instead of our copy. Thus the
skb queue is essentially invalidated. Resolve this by freeing our clone
in the cases where we did not add it to the queue. This also avoids the
skb memory leak caused by failure to free the clone.

[  589.719320] BUG: unable to handle kernel NULL pointer dereference at           (null)
[  589.722344] IP: [<ffffffffa0310e60>] fm10k_ts_tx_subtask+0xb0/0x160 [fm10k]
[  589.723796] PGD 0
[  589.725228] Oops: 0000 [#1] SMP

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:36 -07:00
Jacob Keller
e075996ebd fm10k: move setting shinfo inside ts_tx_enqueue
This patch simplifies the code flow for setting the IN_PROGRESS bit of
the shinfo for an skb we will be timestamping.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:33 -07:00
Jacob Keller
608bb146ff fm10k: use correct ethernet driver Tx timestamp function
skb_complete_tx_timestamp is intended for use by PHY drivers which
implement a different method of returning timestamps. This method is
intended to be used after a PHY driver accepts a cloned packet via its
phy_driver.txtstamp function. It is not correct to use in the standard
ethernet driver such as fm10k. This patch fixes the following possible
kernel panic.

[ 2744.552896] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W  OE  3.19.3-200.fc21.x86_64 #1
[ 2744.552899] Hardware name: Intel Corporation S2600CO/S2600CO, BIOS SE5C600.86B.02.03.8x23.060520140825 06/05/2014
[ 2744.552901]  0000000000000000 2f4c8b10ea3f9848 ffff88081ee03a38 ffffffff8176e215
[ 2744.552906]  0000000000000000 0000000000000000 ffff88081ee03a78 ffffffff8109bc1a
[ 2744.552910]  ffff88081ee03c50 ffff88080e55fc00 ffff88080e55fc00 ffffffff81647c50
[ 2744.552914] Call Trace:
[ 2744.552917]  <IRQ>  [<ffffffff8176e215>] dump_stack+0x45/0x57
[ 2744.552931]  [<ffffffff8109bc1a>] warn_slowpath_common+0x8a/0xc0
[ 2744.552936]  [<ffffffff81647c50>] ? skb_queue_purge+0x20/0x40
[ 2744.552941]  [<ffffffff8109bd4a>] warn_slowpath_null+0x1a/0x20
[ 2744.552946]  [<ffffffff81646911>] skb_release_head_state+0xe1/0xf0
[ 2744.552950]  [<ffffffff81647b26>] skb_release_all+0x16/0x30
[ 2744.552954]  [<ffffffff81647ba6>] kfree_skb+0x36/0x90
[ 2744.552958]  [<ffffffff81647c50>] skb_queue_purge+0x20/0x40
[ 2744.552964]  [<ffffffff81751f8d>] packet_sock_destruct+0x1d/0x90
[ 2744.552968]  [<ffffffff81642053>] __sk_free+0x23/0x140
[ 2744.552973]  [<ffffffff81642189>] sk_free+0x19/0x20
[ 2744.552977]  [<ffffffff81647d60>] skb_complete_tx_timestamp+0x50/0x60
[ 2744.552988]  [<ffffffffa02eee40>] fm10k_ts_tx_hwtstamp+0xd0/0x100 [fm10k]
[ 2744.552994]  [<ffffffffa02e054e>] fm10k_1588_msg_pf+0x12e/0x140 [fm10k]
[ 2744.553002]  [<ffffffffa02edf1d>] fm10k_tlv_msg_parse+0x8d/0xc0 [fm10k]
[ 2744.553010]  [<ffffffffa02eb2d0>] fm10k_mbx_dequeue_rx+0x60/0xb0 [fm10k]
[ 2744.553016]  [<ffffffffa02ebf98>] fm10k_sm_mbx_process+0x178/0x3c0 [fm10k]
[ 2744.553022]  [<ffffffffa02e09ca>] fm10k_msix_mbx_pf+0xfa/0x360 [fm10k]
[ 2744.553030]  [<ffffffff811030a7>] ? get_next_timer_interrupt+0x1f7/0x270
[ 2744.553036]  [<ffffffff810f2a47>] handle_irq_event_percpu+0x77/0x1a0
[ 2744.553041]  [<ffffffff810f2bab>] handle_irq_event+0x3b/0x60
[ 2744.553045]  [<ffffffff810f5d6e>] handle_edge_irq+0x6e/0x120
[ 2744.553054]  [<ffffffff81017414>] handle_irq+0x74/0x140
[ 2744.553061]  [<ffffffff810bb54a>] ? atomic_notifier_call_chain+0x1a/0x20
[ 2744.553066]  [<ffffffff8177777f>] do_IRQ+0x4f/0xf0
[ 2744.553072]  [<ffffffff8177556d>] common_interrupt+0x6d/0x6d
[ 2744.553074]  <EOI>  [<ffffffff81609b16>] ? cpuidle_enter_state+0x66/0x160
[ 2744.553084]  [<ffffffff81609b01>] ? cpuidle_enter_state+0x51/0x160
[ 2744.553087]  [<ffffffff81609cf7>] cpuidle_enter+0x17/0x20
[ 2744.553092]  [<ffffffff810de101>] cpu_startup_entry+0x321/0x3c0
[ 2744.553098]  [<ffffffff81764497>] rest_init+0x77/0x80
[ 2744.553103]  [<ffffffff81d4f02c>] start_kernel+0x4a4/0x4c5
[ 2744.553107]  [<ffffffff81d4e120>] ? early_idt_handlers+0x120/0x120
[ 2744.553110]  [<ffffffff81d4e4d7>] x86_64_start_reservations+0x2a/0x2c
[ 2744.553114]  [<ffffffff81d4e62b>] x86_64_start_kernel+0x152/0x175

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:29 -07:00