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710508 Commits (07842561a873e8f25272bcebe7f6c7f1af7c1a2d)

Author SHA1 Message Date
Colin Ian King 07842561a8 net: realtek: r8169: remove redundant assignment to giga_ctrl
The variable giga_ctrl is being assigned to zero however this is
never read and hence the assignment is redundant, so remove it.
Cleans up clang warning:

drivers/net/ethernet/realtek/r8169.c:1978:3: warning: Value stored
to 'giga_ctrl' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-13 10:02:33 +09:00
Egil Hjelmeland 4b33709d89 net: dsa: lan9303: Documentation: Add missing word "Mbps"
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-13 09:59:29 +09:00
Egil Hjelmeland 30482e4e28 net: dsa: lan9303: Fix lan9303_alr_del_port()
Fix embarrassing bug in lan9303_alr_del_port(): Instead of zeroing
entr->mac_addr, I destroyed the next cache entry. Affected .port_fdb_del and
.port_mdb_del.

Fixes: 0620427ea0 ("net: dsa: lan9303: Add fdb/mdb manipulation")
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-13 09:59:07 +09:00
David S. Miller fdae5f37a8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-12 09:17:05 +09:00
Linus Torvalds b39545684a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Use after free in vlan, from Cong Wang.

 2) Handle NAPI poll with a zero budget properly in mlx5 driver, from
    Saeed Mahameed.

 3) If DMA mapping fails in mlx5 driver, NULL out page, from Inbar
    Karmy.

 4) Handle overrun in RX FIFO of sun4i CAN driver, from Gerhard
    Bertelsmann.

 5) Missing return in mdb and vlan prepare phase of DSA layer, from
    Vivien Didelot.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  vlan: fix a use-after-free in vlan_device_event()
  net: dsa: return after vlan prepare phase
  net: dsa: return after mdb prepare phase
  can: ifi: Fix transmitter delay calculation
  tcp: fix tcp_fastretrans_alert warning
  tcp: gso: avoid refcount_t warning from tcp_gso_segment()
  can: peak: Add support for new PCIe/M2 CAN FD interfaces
  can: sun4i: handle overrun in RX FIFO
  can: c_can: don't indicate triple sampling support for D_CAN
  net/mlx5e: Increase Striding RQ minimum size limit to 4 multi-packet WQEs
  net/mlx5e: Set page to null in case dma mapping fails
  net/mlx5e: Fix napi poll with zero budget
  net/mlx5: Cancel health poll before sending panic teardown command
  net/mlx5: Loop over temp list to release delay events
  rds: ib: Fix NULL pointer dereference in debug code
2017-11-11 09:10:39 -08:00
David S. Miller 7c5556decd wireless-drivers-next patches for 4.15
Last minute patches before the merge window. Not really anything
 special standing out, mostly fixes or cleanup and some minor new
 features.
 
 Major changes:
 
 iwlwifi
 
 * some new PCI IDs
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Merge tag 'wireless-drivers-next-for-davem-2017-11-11' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.15

Last minute patches before the merge window. Not really anything
special standing out, mostly fixes or cleanup and some minor new
features.

Major changes:

iwlwifi

* some new PCI IDs
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 22:37:22 +09:00
Mat Martineau 39b1752110 net: Remove unused skb_shared_info member
ip6_frag_id was only used by UFO, which has been removed.
ipv6_proxy_select_ident() only existed to set ip6_frag_id and has no
in-tree callers.

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 22:09:40 +09:00
David S. Miller 973573c499 Merge branch 'l2tp-avoid-aliasing-tunnels-socket-pointer'
Guillaume Nault says:

====================
l2tp: avoid aliasing tunnels socket pointer

We don't need to copy the tunnel's socket pointer in the pseudo-wire
specific session structures. This uselessly complicates the code
and hampers evolution.

This series was part of an effort to protect tunnels socket pointer
with RCU. But since it provides nice cleanup, I submit it separately.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 22:08:24 +09:00
Guillaume Nault da9ca825ef l2tp: remove the .tunnel_sock field from struct pppol2tp_session
The last user of .tunnel_sock is pppol2tp_connect() which defensively
uses it to verify internal data consistency.

This check isn't necessary: l2tp_session_get() guarantees that the
returned session belongs to the tunnel passed as parameter. And
.tunnel_sock is never updated, so checking that it still points to
the parent tunnel socket is useless; that test can never fail.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 22:08:23 +09:00
Guillaume Nault 7198c77aa0 l2tp: avoid using ->tunnel_sock for getting session's parent tunnel
Sessions don't need to use l2tp_sock_to_tunnel(xxx->tunnel_sock) for
accessing their parent tunnel. They have the .tunnel field in the
l2tp_session structure for that. Furthermore, in all these cases, the
session is registered, so we're guaranteed that .tunnel isn't NULL and
that the session properly holds a reference on the tunnel.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 22:08:23 +09:00
Guillaume Nault 8fdfd6595b l2tp: remove .tunnel_sock from struct l2tp_eth
This field has never been used.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 22:08:23 +09:00
David S. Miller 93f7ea7437 Merge branch 'dsa-b53-Turn-on-Broadcom-tags'
Florian Fainelli says:

====================
net: dsa: b53: Turn on Broadcom tags

This was long overdue, with this patch series, the b53 driver now
turns on Broadcom tags except for 5325 and 5365 which use an older
format that we do not support yet (TBD).

First patch is necessary in order for bgmac, used on BCM5301X and Northstar
Plus to work correctly and successfully send ARP packets back to the requsester.

Second patch is actually a bug fix, but because net/master and net-next/master
diverge in that area, I am targeting net-next/master here.

Finally, the last patch enables Broadcom tags after checking that the CPU port
selected is either, 5, 7 or 8, since those are the only valid combinations
given currently supported HW.

Changes in v3:

- guarded padding with netdev_uses_dsa() to let the non-DSA use cases
  not have a performance hit for smaller packets

- added missing select NET_DSA_TAG_BRCM to drivers/net/dsa/b53/Kconfig

Changes in v2:

- moved a hunk between patch 2 and patch 3 to avoid a bisectability issue
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:55:16 +09:00
Florian Fainelli 7edc58d614 net: dsa: b53: Turn on Broadcom tags
Enable Broadcom tags for b53 devices, except 5325 and 5365 which use a
different Broadcom tag format not yet supported by net/dsa/tag_brcm.c.

We also make sure that we can turn on Broadcom tags on a CPU port number
that is capable of that: 5, 7 or 8.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:55:15 +09:00
Florian Fainelli c499696e79 net: dsa: b53: Stop using dev->cpu_port incorrectly
dev->cpu_port is the driver local information that should only be used
to look up register offsets for a particular port, when they differ
(e.g: IMP port override), but it should certainly not be used in place
of the DSA configured CPU port.

Since the DSA switch layer calls port_vlan_{add,del}() on the CPU port
as well, we can remove the specific setting of the CPU port within
port_vlan_{add,del}.

Fixes: ff39c2d686 ("net: dsa: b53: Add bridge support")
Fixes: 967dd82ffc ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:55:15 +09:00
Florian Fainelli 4d215ae730 net: bgmac: Pad packets to a minimum size
In preparation for enabling Broadcom tags with b53, pad packets to a
minimum size of 64 bytes (sans FCS) in order for the Broadcom switch to
accept ingressing frames. Without this, we would typically be able to
DHCP, but not resolve with ARP because packets are too small and get
rejected by the switch.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:55:15 +09:00
David S. Miller 92d2882817 linux-can-fixes-for-4.14-20171110
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Merge tag 'linux-can-fixes-for-4.14-20171110' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2017-11-10

this is a pull request for net/master.

The first patch by Richard Schütz for the c_can driver removes the false
indication to support triple sampling for d_can. Gerhard Bertelsmann's
patch for the sun4i driver improves the RX overrun handling. The patch
by Stephane Grosjean for the peak_canfd driver adds the PCI ids for
various new PCIe/M2 interfaces. Marek Vasut's patch for the ifi driver
fix transmitter delay calculation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:52:01 +09:00
David S. Miller f444ef5103 Merge branch 'dsa-lan9303-IGMP-handling'
Egil Hjelmeland says:

====================
net: dsa: lan9303: IGMP handling

Set up the HW switch to trap IGMP packets to CPU port.
And make sure skb->offload_fwd_mark is cleared for incoming IGMP packets.

skb->offload_fwd_mark calculation is a candidate for consolidation into the
DSA core. The calculation can probably be more polished when done at a point
where DSA has updated skb.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:50:15 +09:00
Egil Hjelmeland 4672cd3605 net: dsa: lan9303: Clear offload_fwd_mark for IGMP
Now that IGMP packets no longer is flooded in HW, we want the SW bridge to
forward packets based on bridge configuration. To make that happen,
IGMP packets must have skb->offload_fwd_mark = 0.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:50:14 +09:00
Egil Hjelmeland 2aee43078a net: dsa: lan9303: Set up trapping of IGMP to CPU port
IGMP packets should be trapped to the CPU port. The SW bridge knows
whether to forward to other ports.

With "IGMP snooping for local traffic" merged, IGMP trapping is also
required for stable IGMPv2 operation.

LAN9303 does not trap IGMP packets by default.

Enable IGMP trapping in lan9303_setup.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:50:14 +09:00
Rahul Lakkireddy 940c9c4588 cxgb4: collect vpd info directly from hardware
Collect vpd information directly from hardware instead of software
adapter context. Move EEPROM physical address to virtual address
translation logic to t4_hw.c and update relevant files.

Fixes: 6f92a6544f ("cxgb4: collect hardware misc dumps")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 21:47:22 +09:00
David S. Miller be234ba93c Merge tag 'mlx5-fixes-2017-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2017-11-08

The following series includes some fixes for mlx5 core and etherent
driver.

Sorry for the late submission but as you can see i have some very
critical fixes below that i would like them merged into this RC.

Please pull and let me know if there is any problem.

For -stable:
('net/mlx5e: Set page to null in case dma mapping fails') kernels >= 4.13
('net/mlx5: FPGA, return -EINVAL if size is zero') kernels >= 4.13
('net/mlx5: Cancel health poll before sending panic teardown command') kernels >= 4.13

V1->V2:
	- Fix Reviewed-by tag of the 2nd patch.
	- Drop the FPGA 0 size fix, it needs some more change log info.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:40:05 +09:00
Cong Wang 052d41c01b vlan: fix a use-after-free in vlan_device_event()
After refcnt reaches zero, vlan_vid_del() could free
dev->vlan_info via RCU:

	RCU_INIT_POINTER(dev->vlan_info, NULL);
	call_rcu(&vlan_info->rcu, vlan_info_rcu_free);

However, the pointer 'grp' still points to that memory
since it is set before vlan_vid_del():

        vlan_info = rtnl_dereference(dev->vlan_info);
        if (!vlan_info)
                goto out;
        grp = &vlan_info->grp;

Depends on when that RCU callback is scheduled, we could
trigger a use-after-free in vlan_group_for_each_dev()
right following this vlan_vid_del().

Fix it by moving vlan_vid_del() before setting grp. This
is also symmetric to the vlan_vid_add() we call in
vlan_device_event().

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Fixes: efc73f4bbc ("net: Fix memory leak - vlan_info struct")
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Girish Moodalbail <girish.moodalbail@oracle.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Girish Moodalbail <girish.moodalbail@oracle.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:35:32 +09:00
Andrew Lunn 40cff8fca9 net: dsa: mv88e6xxx: Fix stats histogram mode
The statistics histogram mode was not being explicitly initialized on
devices other than the 6390 family. Clearing the statistics then
overwrote the default setting, setting the histogram to a reserved
mode.

Explicitly set the histogram mode for all devices. Change the
statistics clear into a read/modify/write, and since it is now more
complex, move it into global1.c.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:34:33 +09:00
David S. Miller c311db92af Merge branch 'mv88e6xxx-broadcast-flooding-in-hardware'
Andrew Lunn says:

====================
mv88e6xxx broadcast flooding in hardware

This patchset makes the mv88e6xxx driver perform flooding in hardware,
rather than let the software bridge perform the flooding. This is a
prerequisite for IGMP snooping on the bridge interface.

In order to make hardware broadcasting work, a few other issues need
fixing or improving. SWITCHDEV_ATTR_ID_PORT_PARENT_ID is broken, which
is apparent when testing on the ZII devel board with multiple
switches.

Some of these patches are taken from a previous RFC patchset of IGMP
support.

Rebased onto net-next, with fixup for Vivien's refactoring.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:33:11 +09:00
Andrew Lunn 87fa886e1f net: dsa: mv88e6xxx: Flood broadcast frames in hardware
By default, the switch does not flood broadcast frames. Instead the
broadcast address is unknown in the ATU, so the frame gets forwarded
out the cpu port. The software bridge then floods it back to the
individual switch ports which are members of the bridge.

Add an ATU entry in the switch so that it floods broadcast frames out
ports, rather than have the software bridge do it. Also, send a copy
out the cpu port and any dsa ports. Rely on the port vectors to
prevent broadcast frames leaking between bridges, and separated ports.

Additionally, when a VLAN is added, a new FID is allocated.  This
represents a new table of ATU entries. A broadcast entry is added to
the new FID.

With offload_fwd_mark being set, the software bridge will not flood
the frames it receives back to the switch.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:33:11 +09:00
Andrew Lunn a4c93ae1bb net: dsa: mv88e6xxx: Move mv88e6xxx_port_db_load_purge()
This function is going to be needed by a soon to be added new
function. Move it earlier so we can avoid a forward declaration.
No functional changes.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:33:11 +09:00
Andrew Lunn 743fcc283e net: dsa: mv88e6xxx: Print offending port when vlan check fails
When testing if a VLAN is one more than one bridge, we print an error
message that the VLAN is already in use somewhere else. Print both the
new port which would like the VLAN, and the port which already has it,
to aid debugging.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:33:11 +09:00
Andrew Lunn cd88646994 net: dsa: mv88e6xxx: Fixed port netdev check for VLANs
Having the same VLAN on multiple bridges is currently unsupported as
an offload. mv88e6xxx_port_check_hw_vlan() is used to ensure that a
VLAN is not on multiple bridges when adding a VLAN range to a port. It
loops the ports and checks to see if there are ports in a different
bridge with the same VLAN.

While walking all switch ports, the code was checking if the new port
has a netdev slave attached to it. If not, skip checking the port
being walked. This seems like a typ0. If the new port does not have a
slave, how has a VLAN been added to it in the first place, requiring
this check be performed at all? More likely, we should be checking if
the port being walked has a slave. Without the port having a slave, it
cannot have a VLAN on it, so there is no need to check further for
that particular port.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:33:11 +09:00
Andrew Lunn 13edbdb6ed net: dsa: {e}dsa: set offload_fwd_mark on received packets
The software bridge needs to know if a packet has already been bridged
by hardware offload to ports in the same hardware offload, in order
that it does not re-flood them, causing duplicates. This is
particularly true for broadcast and multicast traffic which the host
has requested.

By setting offload_fwd_mark in the skb the bridge will only flood to
ports in other offloads and other netifs. Set this flag in the DSA and
EDSA tag driver.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:33:11 +09:00
Andrew Lunn a42c8e33f2 net: dsa: Fix SWITCHDEV_ATTR_ID_PORT_PARENT_ID
SWITCHDEV_ATTR_ID_PORT_PARENT_ID is used by the software bridge when
determining which ports to flood a packet out. If the packet
originated from a switch, it assumes the switch has already flooded
the packet out the switches ports, so the bridge should not flood the
packet itself out switch ports. Ports on the same switch are expected
to return the same parent ID when SWITCHDEV_ATTR_ID_PORT_PARENT_ID is
called.

DSA gets this wrong with clusters of switches. As far as the software
bridge is concerned, the cluster is all one switch. A packet from any
switch in the cluster can be assumed to have been flooded as needed
out of all ports of the cluster, not just the switch it originated
from. Hence all ports of a cluster should return the same parent. The
old implementation did not, each switch in the cluster had its own ID.

Also wrong was that the ID was not unique if multiple DSA instances
are in operation.

Use the tree ID as the parent ID, which is the same for all switches
in a cluster and unique across switch clusters.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:33:10 +09:00
David S. Miller 8c5f9a8c13 Merge branch 'ieee802154-for-davem-2017-11-09' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next
Stefan Schmidt says:

====================
pull-request: net-next: ieee802154 2017-11-09

A small update on ieee802154 patches for net-next. Nothing dramatic, but simply
housekeeping this time around.
A fix for the correct mask to be applied in the mrf24j40 driver by Gustavo A. R. Silva
Removal of a non existing email user for the ca8210 driver by Harry Morris
A bunch of checkpatch cleanups across the subsystem from myself
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:30:16 +09:00
Niklas Cassel 3ec26c7944 bindings: net: stmmac: correctify note about LPI interrupt
There are two different combined signal for various interrupt events:
In EQOS-CORE and EQOS-MTL configurations, mci_intr_o is the interrupt
signal.
In EQOS-DMA, EQOS-AHB and EQOS-AXI configurations, these interrupt events
are combined with the events in the DMA on the sbd_intr_o signal.

Depending on configuration, the device tree irq "macirq" will refer to
either mci_intr_o or sbd_intr_o.

The databook states:
"The MAC generates the LPI interrupt when the Tx or Rx side enters or exits
the LPI state. The interrupt mci_intr_o (sbd_intr_o in certain
configurations) is asserted when the LPI interrupt status is set.

When the MAC exits the Rx LPI state, then in addition to the mci_intr_o
(sbd_intr_o in certain configurations), the sideband signal lpi_intr_o is
asserted.

If you do not want to gate-off the application clock during the Rx LPI
state, you can leave the lpi_intr_o signal unconnected and use the
mci_intr_o (sbd_intr_o in certain configurations) signal to detect Rx LPI
exit."

Since the "macirq" is always raised when Tx or Rx enters/exits the LPI
state, "eth_lpi" must therefore refer to lpi_intr_o, which is only raised
when Rx exits the LPI state. Update the DT binding description to reflect
reality.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:29:08 +09:00
Keefe Liu ca29fd7cce ipvlan: fix ipv6 outbound device
When process the outbound packet of ipv6, we should assign the master
device to output device other than input device.

Signed-off-by: Keefe Liu <liuqifa@huawei.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:27:05 +09:00
Aleksey Makarov 3d67a50752 net: thunderx: fix double free error
This patch fixes an error in memory allocation/freeing in
ThunderX PF driver.

I moved the allocation to the probe() function and made it managed.

>From the Colin's email:

While running static analysis on linux-next with CoverityScan I found 3
double free errors in the Cavium thunder driver.

The issue occurs on the err_disable_device: label of function nic_probe
when nic_free_lmacmem(nic) is called and a double free occurs on
nic->duplex, nic->link and nic->speed.  This occurs when nic_init_hw()
fails:

        /* Initialize hardware */
        err = nic_init_hw(nic);
        if (err)
                goto err_release_regions;

nic_init_hw() calls nic_get_hw_info() and this calls nic_free_lmacmem()
if any of the allocations fail. This free'ing occurs again by the call
to nic_free_lmacmem() on the err_release_regions exit path in nic_probe().

Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:22:34 +09:00
Mika Westerberg 86dabda426 net: thunderbolt: Clear finished Tx frame bus address in tbnet_tx_callback()
When Thunderbolt network interface is disabled or when the cable is
unplugged the driver releases all allocated buffers by calling
tbnet_free_buffers() for each ring. This function then calls
dma_unmap_page() for each buffer it finds where bus address is non-zero.
Now, we only clear this bus address when the Tx buffer is sent to the
hardware so it is possible that the function finds an entry that has
already been unmapped.

Enabling DMA-API debugging catches this as well:

  thunderbolt 0000:06:00.0: DMA-API: device driver tries to free DMA
    memory it has not allocated [device address=0x0000000068321000] [size=4096 bytes]

Fix this by clearing the bus address of a Tx frame right after we have
unmapped the buffer.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:20:45 +09:00
Tonghao Zhang 5290ada4a2 sock: Remove the global prot_inuse counter.
The per-cpu counter for init_net is prepared in core_initcall.
The patch 7d720c3e ("percpu: add __percpu sparse annotations to net")
and d6d9ca0fe ("net: this_cpu_xxx conversions") optimize the
routines. Then remove the old counter.

Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Tonghao Zhang <zhangtonghao@didichuxing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:17:33 +09:00
Colin Ian King 492d070f24 net: sfc: remove redundant variable start
Variable start is assigned but never read hence it is redundant
and can be removed. Cleans up clang warning:

drivers/net/ethernet/sfc/ptp.c:655:2: warning: Value stored to 'start'
is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:14:14 +09:00
Colin Ian King 98b07e3ed0 qlge: remove duplicated assignment to mbcp
The assignment to mbcp is identical to the initiatialized value assigned
to mbcp at declaration time a few lines earlier, hence we can remove the
second redundant assignment.  Cleans up clang warning:

drivers/net/ethernet/qlogic/qlge/qlge_mpi.c:209:22: warning:
Value stored to 'mbcp' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:13:39 +09:00
Gustavo A. R. Silva a3e2ecbae0 net: wan: x25_asy: mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114928
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:10:06 +09:00
Gustavo A. R. Silva 0aa3b413f6 net: 3com: 3c574_cs: mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114888
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:10:06 +09:00
Gustavo A. R. Silva 75d28f461e net: 8390: pcnet_cs: mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114891
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:10:06 +09:00
Gustavo A. R. Silva 2d91914968 net: decnet: dn_table: mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 115106
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:10:06 +09:00
Guillaume Nault 765924e362 l2tp: don't close sessions in l2tp_tunnel_destruct()
Sessions are already removed by the proto ->destroy() handlers, and
since commit f3c66d4e14 ("l2tp: prevent creation of sessions on terminated tunnels"),
we're guaranteed that no new session can be created afterwards.

Furthermore, l2tp_tunnel_closeall() can sleep when there are sessions
left to close. So we really shouldn't call it in a ->sk_destruct()
handler, as it can be used from atomic context.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 19:05:17 +09:00
David S. Miller f31f54db94 Merge branch 'FACK-loss-recovery-remove'
Yuchung Cheng says:

====================
remove FACK loss recovery

This patch set removes the forward-acknowledgment (FACK)
packet-based loss and reordering detection. This simplifies TCP
loss recovery since the SACK scoreboard no longer needs to track
the number of pending packets under highest SACKed sequence. FACK
is subsumed by the time-based RACK loss detection which is more
robust under reordering and second order losses.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 18:53:17 +09:00
Yuchung Cheng 737ff31456 tcp: use sequence distance to detect reordering
Replace the reordering distance measurement in packet unit with
sequence based approach. Previously it trackes the number of "packets"
toward the forward ACK (i.e.  highest sacked sequence)in a state
variable "fackets_out".

Precisely measuring reordering degree on packet distance has not much
benefit, as the degree constantly changes by factors like path, load,
and congestion window. It is also complicated and prone to arcane bugs.
This patch replaces with sequence-based approach that's much simpler.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 18:53:16 +09:00
Yuchung Cheng 713bafea92 tcp: retire FACK loss detection
FACK loss detection has been disabled by default and the
successor RACK subsumed FACK and can handle reordering better.
This patch removes FACK to simplify TCP loss recovery.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 18:53:16 +09:00
Gustavo A. R. Silva e4ec138413 fsl/fman_port: mark expected switch fall-throughs
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1397960
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 18:50:33 +09:00
Gustavo A. R. Silva d9b9c0e027 net: ethernet: bgmac: mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1397972
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 18:49:26 +09:00
Nathan Fontenot 37798d0211 ibmvnic: Add vnic client data to login buffer
Update the login buffer to include client data for the vnic driver,
this includes the OS name, LPAR name, and device name. This update
allows this information to be available in the VIOS.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 18:46:11 +09:00
David S. Miller f3edacbd69 bpf: Revert bpf_overrid_function() helper changes.
NACK'd by x86 maintainer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-11 18:24:55 +09:00