platform/kernel/linux-starfive.git
6 years agoipv6: set all.accept_dad to 0 by default
Nicolas Dichtel [Tue, 14 Nov 2017 13:21:32 +0000 (14:21 +0100)]
ipv6: set all.accept_dad to 0 by default

With commits 35e015e1f577 and a2d3f3e33853, the global 'accept_dad' flag
is also taken into account (default value is 1). If either global or
per-interface flag is non-zero, DAD will be enabled on a given interface.

This is not backward compatible: before those patches, the user could
disable DAD just by setting the per-interface flag to 0. Now, the
user instead needs to set both flags to 0 to actually disable DAD.

Restore the previous behaviour by setting the default for the global
'accept_dad' flag to 0. This way, DAD is still enabled by default,
as per-interface flags are set to 1 on device creation, but setting
them to 0 is enough to disable DAD on a given interface.

- Before 35e015e1f57a7 and a2d3f3e33853:
          global    per-interface    DAD enabled
[default]   1             1              yes
            X             0              no
            X             1              yes

- After 35e015e1f577 and a2d3f3e33853:
          global    per-interface    DAD enabled
[default]   1             1              yes
            0             0              no
            0             1              yes
            1             0              yes

- After this fix:
          global    per-interface    DAD enabled
            1             1              yes
            0             0              no
[default]   0             1              yes
            1             0              yes

Fixes: 35e015e1f577 ("ipv6: fix net.ipv6.conf.all interface DAD handlers")
Fixes: a2d3f3e33853 ("ipv6: fix net.ipv6.conf.all.accept_dad behaviour for real")
CC: Stefano Brivio <sbrivio@redhat.com>
CC: Matteo Croce <mcroce@redhat.com>
CC: Erik Kline <ek@google.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agouapi: fix linux/tls.h userspace compilation error
Dmitry V. Levin [Tue, 14 Nov 2017 03:30:11 +0000 (06:30 +0300)]
uapi: fix linux/tls.h userspace compilation error

Move inclusion of a private kernel header <net/tcp.h>
from uapi/linux/tls.h to its only user - net/tls.h,
to fix the following linux/tls.h userspace compilation error:

/usr/include/linux/tls.h:41:21: fatal error: net/tcp.h: No such file or directory

As to this point uapi/linux/tls.h was totaly unusuable for userspace,
cleanup this header file further by moving other redundant includes
to net/tls.h.

Fixes: 3c4d7559159b ("tls: kernel TLS support")
Cc: <stable@vger.kernel.org> # v4.13+
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agousbnet: ipheth: prevent TX queue timeouts when device not ready
Alexander Kappner [Tue, 14 Nov 2017 01:44:20 +0000 (17:44 -0800)]
usbnet: ipheth: prevent TX queue timeouts when device not ready

iOS devices require the host to be "trusted" before servicing network
packets. Establishing trust requires the user to confirm a dialog on the
iOS device.Until trust is established, the iOS device will silently discard
network packets from the host. Currently, the ipheth driver does not detect
whether an iOS device has established trust with the host, and immediately
sets up the transmit queues.

This causes the following problems:

- Kernel taint due to WARN() in netdev watchdog.
- Dmesg spam ("TX timeout").
- Disruption of user space networking activity (dhcpd, etc...) when new
interface comes up but cannot be used.
- Unnecessary host and device wakeups and USB traffic

Example dmesg output:

[ 1101.319778] NETDEV WATCHDOG: eth1 (ipheth): transmit queue 0 timed out
[ 1101.319817] ------------[ cut here ]------------
[ 1101.319828] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:316 dev_watchdog+0x20f/0x220
[ 1101.319831] Modules linked in: ipheth usbmon nvidia_drm(PO) nvidia_modeset(PO) nvidia(PO) iwlmvm mac80211 iwlwifi btusb btrtl btbcm btintel qmi_wwan bluetooth cfg80211 ecdh_generic thinkpad_acpi rfkill [last unloaded: ipheth]
[ 1101.319861] CPU: 0 PID: 0 Comm: swapper/0 Tainted: P           O    4.13.12.1 #1
[ 1101.319864] Hardware name: LENOVO 20ENCTO1WW/20ENCTO1WW, BIOS N1EET62W (1.35 ) 11/10/2016
[ 1101.319867] task: ffffffff81e11500 task.stack: ffffffff81e00000
[ 1101.319873] RIP: 0010:dev_watchdog+0x20f/0x220
[ 1101.319876] RSP: 0018:ffff8810a3c03e98 EFLAGS: 00010292
[ 1101.319880] RAX: 000000000000003a RBX: 0000000000000000 RCX: 0000000000000000
[ 1101.319883] RDX: ffff8810a3c15c48 RSI: ffffffff81ccbfc2 RDI: 00000000ffffffff
[ 1101.319886] RBP: ffff880c04ebc41c R08: 0000000000000000 R09: 0000000000000379
[ 1101.319889] R10: 00000100696589d0 R11: 0000000000000378 R12: ffff880c04ebc000
[ 1101.319892] R13: 0000000000000000 R14: 0000000000000001 R15: ffff880c2865fc80
[ 1101.319896] FS:  0000000000000000(0000) GS:ffff8810a3c00000(0000) knlGS:0000000000000000
[ 1101.319899] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1101.319902] CR2: 00007f3ff24ac000 CR3: 0000000001e0a000 CR4: 00000000003406f0
[ 1101.319905] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1101.319908] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1101.319910] Call Trace:
[ 1101.319914]  <IRQ>
[ 1101.319921]  ? dev_graft_qdisc+0x70/0x70
[ 1101.319928]  ? dev_graft_qdisc+0x70/0x70
[ 1101.319934]  ? call_timer_fn+0x2e/0x170
[ 1101.319939]  ? dev_graft_qdisc+0x70/0x70
[ 1101.319944]  ? run_timer_softirq+0x1ea/0x440
[ 1101.319951]  ? timerqueue_add+0x54/0x80
[ 1101.319956]  ? enqueue_hrtimer+0x38/0xa0
[ 1101.319963]  ? __do_softirq+0xed/0x2e7
[ 1101.319970]  ? irq_exit+0xb4/0xc0
[ 1101.319976]  ? smp_apic_timer_interrupt+0x39/0x50
[ 1101.319981]  ? apic_timer_interrupt+0x8c/0xa0
[ 1101.319983]  </IRQ>
[ 1101.319992]  ? cpuidle_enter_state+0xfa/0x2a0
[ 1101.319999]  ? do_idle+0x1a3/0x1f0
[ 1101.320004]  ? cpu_startup_entry+0x5f/0x70
[ 1101.320011]  ? start_kernel+0x444/0x44c
[ 1101.320017]  ? early_idt_handler_array+0x120/0x120
[ 1101.320023]  ? x86_64_start_kernel+0x145/0x154
[ 1101.320028]  ? secondary_startup_64+0x9f/0x9f
[ 1101.320033] Code: 20 04 00 00 eb 9f 4c 89 e7 c6 05 59 44 71 00 01 e8 a7 df fd ff 89 d9 4c 89 e6 48 c7 c7 70 b7 cd 81 48 89 c2 31 c0 e8 97 64 90 ff <0f> ff eb bf 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00
[ 1101.320103] ---[ end trace 0cc4d251e2b57080 ]---
[ 1101.320110] ipheth 1-5:4.2: ipheth_tx_timeout: TX timeout

The last message "TX timeout" is repeated every 5 seconds until trust is
established or the device is disconnected, filling up dmesg.

The proposed patch eliminates the problem by, upon connection, keeping the
TX queue and carrier disabled until a packet is first received from the iOS
device. This is reflected by the confirmed_pairing variable in the device
structure. Only after at least one packet has been received from the iOS
device, the transmit queue and carrier are brought up during the periodic
device poll in ipheth_carrier_set. Because the iOS device will always send
a packet immediately upon trust being established, this should not delay
the interface becoming useable. To prevent failed UBRs in
ipheth_rcvbulk_callback from perpetually re-enabling the queue if it was
disabled, a new check is added so only successful transfers re-enable the
queue, whereas failed transfers only trigger an immediate poll.

This has the added benefit of removing the periodic control requests to the
iOS device until trust has been established and thus should reduce wakeup
events on both the host and the iOS device.

Signed-off-by: Alexander Kappner <agk@godking.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agovhost_net: conditionally enable tx polling
Jason Wang [Mon, 13 Nov 2017 03:45:34 +0000 (11:45 +0800)]
vhost_net: conditionally enable tx polling

We always poll tx for socket, this is sub optimal since this will
slightly increase the waitqueue traversing time and more important,
vhost could not benefit from commit 9e641bdcfa4e ("net-tun:
restructure tun_do_read for better sleep/wakeup efficiency") even if
we've stopped rx polling during handle_rx(), tx poll were still left
in the waitqueue.

Pktgen from a remote host to VM over mlx4 on two 2.00GHz Xeon E5-2650
shows 11.7% improvements on rx PPS. (from 1.28Mpps to 1.44Mpps)

Cc: Wei Xu <wexu@redhat.com>
Cc: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agouapi: fix linux/rxrpc.h userspace compilation errors
Dmitry V. Levin [Mon, 13 Nov 2017 00:37:06 +0000 (03:37 +0300)]
uapi: fix linux/rxrpc.h userspace compilation errors

Consistently use types provided by <linux/types.h> to fix the following
linux/rxrpc.h userspace compilation errors:

/usr/include/linux/rxrpc.h:24:2: error: unknown type name 'u16'
  u16  srx_service; /* service desired */
/usr/include/linux/rxrpc.h:25:2: error: unknown type name 'u16'
  u16  transport_type; /* type of transport socket (SOCK_DGRAM) */
/usr/include/linux/rxrpc.h:26:2: error: unknown type name 'u16'
  u16  transport_len; /* length of transport address */

Use __kernel_sa_family_t instead of sa_family_t the same way
as uapi/linux/in.h does, to fix the following
linux/rxrpc.h userspace compilation errors:

/usr/include/linux/rxrpc.h:23:2: error: unknown type name 'sa_family_t'
  sa_family_t srx_family; /* address family */
/usr/include/linux/rxrpc.h:28:3: error: unknown type name 'sa_family_t'
  sa_family_t family;  /* transport address family */

Fixes: 727f8914477e ("rxrpc: Expose UAPI definitions to userspace")
Cc: <stable@vger.kernel.org> # v4.14
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: stmmac: fix LPI transitioning for dwmac4
Niklas Cassel [Tue, 14 Nov 2017 10:15:54 +0000 (11:15 +0100)]
net: stmmac: fix LPI transitioning for dwmac4

The LPI transitioning logic in stmmac_main uses
priv->tx_path_in_lpi_mode to enter/exit LPI.

However, priv->tx_path_in_lpi_mode is assigned
using the return value from host_irq_status().

So for dwmac4, priv->tx_path_in_lpi_mode was always false,
so stmmac_tx_clean() would always try to put us in eee mode,
and stmmac_xmit() would never take us out of eee mode.

To fix this, make host_irq_status() read and return the LPI
irq status also for dwmac4.

This also increments the existing LPI counters, so that
ethtool --statistics shows LPI transitions also for dwmac4.

For dwmac1000, irqs are enabled/disabled using the register
named "Interrupt Mask Register", and thus setting a bit disables
that specific irq.

For dwmac4 the matching register is named "MAC_Interrupt_Enable",
and thus setting a bit enables that specific irq.

Looking at dwmac1000_core.c, the irqs that are always enabled are:
LPI and PMT.

Looking at dwmac4_core.c, the irqs that are always enabled are:
PMT.

To be able to read the LPI irq status, we need to enable the LPI
irq also for dwmac4.

Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoatm: horizon: Fix irq release error
Arvind Yadav [Tue, 14 Nov 2017 08:12:38 +0000 (13:42 +0530)]
atm: horizon: Fix irq release error

atm_dev_register() can fail here and passed parameters to free irq
which is not initialised. Initialization of 'dev->irq' happened after
the 'goto out_free_irq'. So using 'irq' insted of 'dev->irq' in
free_irq().

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet-sysfs: trigger netlink notification on ifalias change via sysfs
Roopa Prabhu [Tue, 14 Nov 2017 07:21:36 +0000 (23:21 -0800)]
net-sysfs: trigger netlink notification on ifalias change via sysfs

This patch adds netlink notifications on iflias changes via sysfs.
makes it consistent with the netlink path which also calls
netdev_state_change. Also makes it consistent with other sysfs
netdev_store operations.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: Using kfree_rcu() to simplify the code
Wei Yongjun [Tue, 14 Nov 2017 06:27:12 +0000 (06:27 +0000)]
openvswitch: Using kfree_rcu() to simplify the code

The callback function of call_rcu() just calls a kfree(), so we
can use kfree_rcu() instead of call_rcu() + callback function.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: Make local function ovs_nsh_key_attr_size() static
Wei Yongjun [Tue, 14 Nov 2017 06:27:03 +0000 (06:27 +0000)]
openvswitch: Make local function ovs_nsh_key_attr_size() static

Fixes the following sparse warnings:

net/openvswitch/flow_netlink.c:340:8: warning:
 symbol 'ovs_nsh_key_attr_size' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: Fix return value check in ovs_meter_cmd_features()
Wei Yongjun [Tue, 14 Nov 2017 06:20:16 +0000 (06:20 +0000)]
openvswitch: Fix return value check in ovs_meter_cmd_features()

In case of error, the function ovs_meter_cmd_reply_start() returns
ERR_PTR() not NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: 96fbc13d7e77 ("openvswitch: Add meter infrastructure")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoliquidio: Missing error code in liquidio_init_nic_module()
Dan Carpenter [Tue, 14 Nov 2017 06:14:17 +0000 (09:14 +0300)]
liquidio: Missing error code in liquidio_init_nic_module()

We accidentally return success if lio_vf_rep_modinit() fails instead of
propogating the error code.

Fixes: e20f469660ad ("liquidio: synchronize VF representor names with NIC firmware")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoxdp: sample: Missing curly braces in read_route()
Dan Carpenter [Tue, 14 Nov 2017 06:12:03 +0000 (09:12 +0300)]
xdp: sample: Missing curly braces in read_route()

The assert statement is supposed to be part of the else branch but the
curly braces were accidentally left off.

Fixes: 3e29cd0e6563 ("xdp: Sample xdp program implementing ip forward")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoibmvnic: Feature implementation of Vital Product Data (VPD) for the ibmvnic driver
Desnes Augusto Nunes do Rosario [Mon, 13 Nov 2017 17:59:19 +0000 (15:59 -0200)]
ibmvnic: Feature implementation of Vital Product Data (VPD) for the ibmvnic driver

This patch implements and enables VDP support for the ibmvnic driver.
Moreover, it includes the implementation of suitable structs, signal
 transmission/handling and functions which allows the retrival of firmware
 information from the ibmvnic card through the ethtool command.

Signed-off-by: Desnes A. Nunes do Rosario <desnesn@linux.vnet.ibm.com>
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: bridge: add vlan_tunnel to bridge port policies
Nikolay Aleksandrov [Mon, 13 Nov 2017 16:30:55 +0000 (18:30 +0200)]
net: bridge: add vlan_tunnel to bridge port policies

Found another missing port flag policy entry for IFLA_BRPORT_VLAN_TUNNEL
so add it now.

CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Fixes: efa5356b0d97 ("bridge: per vlan dst_metadata netlink support")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: mvneta: fix handling of the Tx descriptor counter
Simon Guinot [Mon, 13 Nov 2017 15:27:02 +0000 (16:27 +0100)]
net: mvneta: fix handling of the Tx descriptor counter

The mvneta controller provides a 8-bit register to update the pending
Tx descriptor counter. Then, a maximum of 255 Tx descriptors can be
added at once. In the current code the mvneta_txq_pend_desc_add function
assumes the caller takes care of this limit. But it is not the case. In
some situations (xmit_more flag), more than 255 descriptors are added.
When this happens, the Tx descriptor counter register is updated with a
wrong value, which breaks the whole Tx queue management.

This patch fixes the issue by allowing the mvneta_txq_pend_desc_add
function to process more than 255 Tx descriptors.

Fixes: 2a90f7e1d5d0 ("net: mvneta: add xmit_more support")
Cc: stable@vger.kernel.org # 4.11+
Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetlink: remove unused NETLINK SKB flags
Johannes Berg [Mon, 13 Nov 2017 15:19:46 +0000 (16:19 +0100)]
netlink: remove unused NETLINK SKB flags

These flags are unused, remove them to be less confusing.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetlink: remove unnecessary forward declaration
Johannes Berg [Mon, 13 Nov 2017 14:57:30 +0000 (15:57 +0100)]
netlink: remove unnecessary forward declaration

netlink_skb_destructor() is actually defined before the first usage
in the file, so remove the unnecessary forward declaration.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: lan9303: calculate offload_fwd_mark from tag
Egil Hjelmeland [Mon, 13 Nov 2017 13:25:25 +0000 (14:25 +0100)]
net: dsa: lan9303: calculate offload_fwd_mark from tag

The lan9303 set bits in the host CPU tag indicating if a ingress frame
is a trapped IGMP or STP frame. Use these bits to calculate
skb->offload_fwd_mark more efficiently.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Updates MSI/MSI-X alloc/free APIs(depricated) to new APIs
Salil Mehta [Mon, 13 Nov 2017 11:39:38 +0000 (11:39 +0000)]
net: hns3: Updates MSI/MSI-X alloc/free APIs(depricated) to new APIs

This patch migrates the HNS3 driver code from use of depricated PCI
MSI/MSI-X interrupt vector allocation/free APIs to new common APIs.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: lan9303: correctly check return value of devm_gpiod_get_optional
Pan Bian [Sun, 12 Nov 2017 15:38:09 +0000 (23:38 +0800)]
net: dsa: lan9303: correctly check return value of devm_gpiod_get_optional

Function devm_gpiod_get_optional() returns an ERR_PTR on failure. Its
return value should not be validated by a NULL check. Instead, use IS_ERR.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: realtek: fix RTL8211F interrupt mode
Heiner Kallweit [Sun, 12 Nov 2017 15:16:04 +0000 (16:16 +0100)]
net: phy: realtek: fix RTL8211F interrupt mode

After commit b94d22d94ad22 "ARM64: dts: meson-gx: add external PHY
interrupt on some platforms" ethernet stopped working on my Odroid-C2
which has a RTL8211F phy.

It turned out that no interrupts were triggered. Further analysis
showed the register INER can't be altered on page 0.
Because register INSR needs to be accessed via page 0xa43 I assumed
that register INER needs to be accessed via some page too.
Some brute force check resulted in page 0xa42 being the right one.

With this patch the phy is working properly in interrupt mode.

Fixes: 3447cf2e9a11 ("net/phy: Add support for Realtek RTL8211F")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'mlxsw-Update-firmware-version'
David S. Miller [Tue, 14 Nov 2017 12:17:08 +0000 (21:17 +0900)]
Merge branch 'mlxsw-Update-firmware-version'

Jiri Pirko says:

====================
mlxsw: Update firmware version

Ido says:

This set adjusts the driver to use a new firmware version. The new
version includes various enhancements and fixes detailed in the first
patch.

The second patch enables batch deletion of neighbours on a router
interface (RIF) which was not possible with previous versions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum_router: Add batch neighbour deletion
Ido Schimmel [Sun, 12 Nov 2017 08:02:56 +0000 (09:02 +0100)]
mlxsw: spectrum_router: Add batch neighbour deletion

In commit 4a3c67a6e7cd ("mlxsw: spectrum_router: Don't batch neighbour
deletion") I removed the support for batch deletion of neighbours on a
router interface (RIF) since at that time the firmware did not support
it for IPv6 neighbours.

This is now supported by the version enforced by the driver, so there is
no reason to delete neighbours one by one anymore.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: spectrum: Update minimum firmware version to 13.1530.152
Shalom Toledo [Sun, 12 Nov 2017 08:01:24 +0000 (09:01 +0100)]
mlxsw: spectrum: Update minimum firmware version to 13.1530.152

This new firmware contains:
 - Support Spectrum A1 revision
 - Batch deletion of IPv6 neighbours
 - Remove incorrect VPD capability

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Mention net-next status web page in netdev-FAQ.txt
Harald Welte [Sun, 12 Nov 2017 22:21:34 +0000 (07:21 +0900)]
net: Mention net-next status web page in netdev-FAQ.txt

According to
  https://www.mail-archive.com/netdev@vger.kernel.org/msg177411.html
there is a status page available at
  http://vger.kernel.org/~davem/net-next.html
to obtain the current status of the net-next tree.  Let's add this
information to the netdev FAQ.

Signed-off-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Extend Kernel GTP-U tunneling documentation
Harald Welte [Sun, 12 Nov 2017 22:18:45 +0000 (07:18 +0900)]
net: Extend Kernel GTP-U tunneling documentation

* clarify specification references for v0/v1
* add section "APN vs. Network device"
* add section "Local GTP-U entity and tunnel identification"

Signed-off-by: Andreas Schultz <aschultz@tpip.net>
Signed-off-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-devname_alloc_cleanups'
David S. Miller [Tue, 14 Nov 2017 07:38:46 +0000 (16:38 +0900)]
Merge branch 'net-devname_alloc_cleanups'

Rasmus Villemoes says:

====================
net: core: devname allocation cleanups

It's somewhat confusing to have both dev_alloc_name and
dev_get_valid_name. I can't see why the former is less strict than the
latter, so make them (or rather dev_alloc_name_ns and
dev_get_valid_name) equivalent, hardening dev_alloc_name() a little.

Obvious follow-up patches would be to only export one function, and
make dev_alloc_name a static inline wrapper for that (whichever name
is chosen for the exported interface). But maybe there is a good
reason the two exported interfaces do different checking, so I'll
refrain from including the trivial but tree-wide renaming in this
series.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: dev_get_valid_name is now the same as dev_alloc_name_ns
Rasmus Villemoes [Sun, 12 Nov 2017 23:15:10 +0000 (00:15 +0100)]
net: core: dev_get_valid_name is now the same as dev_alloc_name_ns

If name contains a %, it's easy to see that this patch doesn't change
anything (other than eliminate the duplicate dev_valid_name
call). Otherwise, we'll now just spend a little time in snprintf()
copying name to the stack buffer allocated in dev_alloc_name_ns, and do
the __dev_get_by_name using that buffer rather than name.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: maybe return -EEXIST in __dev_alloc_name
Rasmus Villemoes [Sun, 12 Nov 2017 23:15:09 +0000 (00:15 +0100)]
net: core: maybe return -EEXIST in __dev_alloc_name

If we're given format string with no %d, -EEXIST is a saner error code.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: check dev_valid_name in __dev_alloc_name
Rasmus Villemoes [Sun, 12 Nov 2017 23:15:08 +0000 (00:15 +0100)]
net: core: check dev_valid_name in __dev_alloc_name

We currently only exclude non-sysfs-friendly names via
dev_get_valid_name; there doesn't seem to be a reason to allow such
names when we're called via dev_alloc_name.

This does duplicate the dev_valid_name check in the dev_get_valid_name()
case; we'll fix that shortly.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: drop pointless check in __dev_alloc_name
Rasmus Villemoes [Sun, 12 Nov 2017 23:15:07 +0000 (00:15 +0100)]
net: core: drop pointless check in __dev_alloc_name

The only caller passes a stack buffer as buf, so it won't equal the
passed-in name. Moreover, we're already using buf as a scratch buffer
inside the if (p) {} block, so if buf and name were the same, that
snprintf() call would be overwriting its own format string.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: eliminate dev_alloc_name{,_ns} code duplication
Rasmus Villemoes [Sun, 12 Nov 2017 23:15:06 +0000 (00:15 +0100)]
net: core: eliminate dev_alloc_name{,_ns} code duplication

dev_alloc_name contained a BUG_ON(), which I moved to dev_alloc_name_ns;
the only other caller of that already has the same BUG_ON.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: move dev_alloc_name_ns a little higher
Rasmus Villemoes [Sun, 12 Nov 2017 23:15:05 +0000 (00:15 +0100)]
net: core: move dev_alloc_name_ns a little higher

No functional change.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: improve sanity checking in __dev_alloc_name
Rasmus Villemoes [Sun, 12 Nov 2017 23:15:04 +0000 (00:15 +0100)]
net: core: improve sanity checking in __dev_alloc_name

__dev_alloc_name is called from the public (and exported)
dev_alloc_name(), so we don't have a guarantee that strlen(name) is at
most IFNAMSIZ. If somebody manages to get __dev_alloc_name called with a
% char beyond the 31st character, we'd be making a snprintf() call that
will very easily crash the kernel (using an appropriate %p extension,
we'll likely dereference some completely bogus pointer).

In the normal case where strlen() is sane, we don't even save anything
by limiting to IFNAMSIZ, so just use strchr().

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'tls-misc-fixes'
David S. Miller [Tue, 14 Nov 2017 07:26:35 +0000 (16:26 +0900)]
Merge branch 'tls-misc-fixes'

Ilya Lesokhin says:

====================
tls: Miscellaneous fixes

Here's a set of miscellaneous fix patches.

Patch 1 makes sure aead_request is initailized properly.
Patches 2-3 Fix a memory leak we've encountered.
patch 4 moves tls_make_aad to allow sharing it in the future.
Patch 5 fixes a TOCTOU issue reported here:
https://www.spinics.net/lists/kernel/msg2608603.html
Patch 6 Avoids callback overriding when tls_set_sw_offload fails.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotls: don't override sk_write_space if tls_set_sw_offload fails.
Ilya Lesokhin [Mon, 13 Nov 2017 08:22:49 +0000 (10:22 +0200)]
tls: don't override sk_write_space if tls_set_sw_offload fails.

If we fail to enable tls in the kernel we shouldn't override
the sk_write_space callback

Fixes: 3c4d7559159b ('tls: kernel TLS support')
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotls: Avoid copying crypto_info again after cipher_type check.
Ilya Lesokhin [Mon, 13 Nov 2017 08:22:48 +0000 (10:22 +0200)]
tls: Avoid copying crypto_info again after cipher_type check.

Avoid copying crypto_info again after cipher_type check
to avoid a TOCTOU exploits.
The temporary array on the stack is removed as we don't really need it

Fixes: 3c4d7559159b ('tls: kernel TLS support')
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotls: Move tls_make_aad to header to allow sharing
Ilya Lesokhin [Mon, 13 Nov 2017 08:22:47 +0000 (10:22 +0200)]
tls: Move tls_make_aad to header to allow sharing

move tls_make_aad as it is going to be reused
by the device offload code and rx path.
Remove unused recv parameter.

Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotls: Fix TLS ulp context leak, when TLS_TX setsockopt is not used.
Ilya Lesokhin [Mon, 13 Nov 2017 08:22:46 +0000 (10:22 +0200)]
tls: Fix TLS ulp context leak, when TLS_TX setsockopt is not used.

Previously the TLS ulp context would leak if we attached a TLS ulp
to a socket but did not use the TLS_TX setsockopt,
or did use it but it failed.
This patch solves the issue by overriding prot[TLS_BASE_TX].close
and fixing tls_sk_proto_close to work properly
when its called with ctx->tx_conf == TLS_BASE_TX.
This patch also removes ctx->free_resources as we can use ctx->tx_conf
to obtain the relevant information.

Fixes: 3c4d7559159b ('tls: kernel TLS support')
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotls: Add function to update the TLS socket configuration
Ilya Lesokhin [Mon, 13 Nov 2017 08:22:45 +0000 (10:22 +0200)]
tls: Add function to update the TLS socket configuration

The tx configuration is now stored in ctx->tx_conf.
And sk->sk_prot is updated trough a function
This will simplify things when we add rx
and support for different possible
tx and rx cross configurations.

Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotls: Use kzalloc for aead_request allocation
Ilya Lesokhin [Mon, 13 Nov 2017 08:22:44 +0000 (10:22 +0200)]
tls: Use kzalloc for aead_request allocation

Use kzalloc for aead_request allocation as
we don't set all the bits in the request.

Fixes: 3c4d7559159b ('tls: kernel TLS support')
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'bpf-improve-verifier-ARG_CONST_SIZE_OR_ZERO-semantics'
David S. Miller [Tue, 14 Nov 2017 07:20:04 +0000 (16:20 +0900)]
Merge branch 'bpf-improve-verifier-ARG_CONST_SIZE_OR_ZERO-semantics'

Yonghong Song says:

====================
bpf: improve verifier ARG_CONST_SIZE_OR_ZERO semantics

This patch set intends to change verifier ARG_CONST_SIZE_OR_ZERO
semantics so that simpler bpf programs can be written with verifier
acceptance. Patch #1 comment provided the detailed examples and
the patch itself implements the new semantics. Patch #2
changes bpf_probe_read helper arg2 type from
ARG_CONST_SIZE to ARG_CONST_SIZE_OR_ZERO. Patch #3 fixed a few
test cases and added some for better coverage.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobpf: fix and add test cases for ARG_CONST_SIZE_OR_ZERO semantics change
Yonghong Song [Sun, 12 Nov 2017 22:49:11 +0000 (14:49 -0800)]
bpf: fix and add test cases for ARG_CONST_SIZE_OR_ZERO semantics change

Fix a few test cases to allow non-NULL map/packet/stack pointer
with size = 0. Change a few tests using bpf_probe_read to use
bpf_probe_write_user so ARG_CONST_SIZE arg can still be properly
tested. One existing test case already covers size = 0 with non-NULL
packet pointer, so add additional tests so all cases of
size = 0 and 0 <= size <= legal_upper_bound with non-NULL
map/packet/stack pointer are covered.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobpf: change helper bpf_probe_read arg2 type to ARG_CONST_SIZE_OR_ZERO
Yonghong Song [Sun, 12 Nov 2017 22:49:10 +0000 (14:49 -0800)]
bpf: change helper bpf_probe_read arg2 type to ARG_CONST_SIZE_OR_ZERO

The helper bpf_probe_read arg2 type is changed
from ARG_CONST_SIZE to ARG_CONST_SIZE_OR_ZERO to permit
size-0 buffer. Together with newer ARG_CONST_SIZE_OR_ZERO
semantics which allows non-NULL buffer with size 0,
this allows simpler bpf programs with verifier acceptance.
The previous commit which changes ARG_CONST_SIZE_OR_ZERO semantics
has details on examples.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobpf: improve verifier ARG_CONST_SIZE_OR_ZERO semantics
Yonghong Song [Sun, 12 Nov 2017 22:49:09 +0000 (14:49 -0800)]
bpf: improve verifier ARG_CONST_SIZE_OR_ZERO semantics

For helpers, the argument type ARG_CONST_SIZE_OR_ZERO permits the
access size to be 0 when accessing the previous argument (arg).
Right now, it requires the arg needs to be NULL when size passed
is 0 or could be 0. It also requires a non-NULL arg when the size
is proved to be non-0.

This patch changes verifier ARG_CONST_SIZE_OR_ZERO behavior
such that for size-0 or possible size-0, it is not required
the arg equal to NULL.

There are a couple of reasons for this semantics change, and
all of them intends to simplify user bpf programs which
may improve user experience and/or increase chances of
verifier acceptance. Together with the next patch which
changes bpf_probe_read arg2 type from ARG_CONST_SIZE to
ARG_CONST_SIZE_OR_ZERO, the following two examples, which
fail the verifier currently, are able to get verifier acceptance.

Example 1:
   unsigned long len = pend - pstart;
   len = len > MAX_PAYLOAD_LEN ? MAX_PAYLOAD_LEN : len;
   len &= MAX_PAYLOAD_LEN;
   bpf_probe_read(data->payload, len, pstart);

It does not have test for "len > 0" and it failed the verifier.
Users may not be aware that they have to add this test.
Converting the bpf_probe_read helper to have
ARG_CONST_SIZE_OR_ZERO helps the above code get
verifier acceptance.

Example 2:
  Here is one example where llvm "messed up" the code and
  the verifier fails.

......
   unsigned long len = pend - pstart;
   if (len > 0 && len <= MAX_PAYLOAD_LEN)
     bpf_probe_read(data->payload, len, pstart);
......

The compiler generates the following code and verifier fails:
......
39: (79) r2 = *(u64 *)(r10 -16)
40: (1f) r2 -= r8
41: (bf) r1 = r2
42: (07) r1 += -1
43: (25) if r1 > 0xffe goto pc+3
  R0=inv(id=0) R1=inv(id=0,umax_value=4094,var_off=(0x0; 0xfff))
  R2=inv(id=0) R6=map_value(id=0,off=0,ks=4,vs=4095,imm=0) R7=inv(id=0)
  R8=inv(id=0) R9=inv0 R10=fp0
44: (bf) r1 = r6
45: (bf) r3 = r8
46: (85) call bpf_probe_read#45
R2 min value is negative, either use unsigned or 'var &= const'
......

The compiler optimization is correct. If r1 = 0,
r1 - 1 = 0xffffffffffffffff > 0xffe.  If r1 != 0, r1 - 1 will not wrap.
r1 > 0xffe at insn #43 can actually capture
both "r1 > 0" and "len <= MAX_PAYLOAD_LEN".
This however causes an issue in verifier as the value range of arg2
"r2" does not properly get refined and lead to verification failure.

Relaxing bpf_prog_read arg2 from ARG_CONST_SIZE to ARG_CONST_SIZE_OR_ZERO
allows the following simplied code:
   unsigned long len = pend - pstart;
   if (len <= MAX_PAYLOAD_LEN)
     bpf_probe_read(data->payload, len, pstart);

The llvm compiler will generate less complex code and the
verifier is able to verify that the program is okay.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotcp: allow drivers to tweak TSQ logic
Eric Dumazet [Sat, 11 Nov 2017 23:54:12 +0000 (15:54 -0800)]
tcp: allow drivers to tweak TSQ logic

I had many reports that TSQ logic breaks wifi aggregation.

Current logic is to allow up to 1 ms of bytes to be queued into qdisc
and drivers queues.

But Wifi aggregation needs a bigger budget to allow bigger rates to
be discovered by various TCP Congestion Controls algorithms.

This patch adds an extra socket field, allowing wifi drivers to select
another log scale to derive TCP Small Queue credit from current pacing
rate.

Initial value is 10, meaning that this patch does not change current
behavior.

We expect wifi drivers to set this field to smaller values (tests have
been done with values from 6 to 9)

They would have to use following template :

if (skb->sk && skb->sk->sk_pacing_shift != MY_PACING_SHIFT)
     skb->sk->sk_pacing_shift = MY_PACING_SHIFT;

Ref: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Toke Høiland-Jørgensen <toke@toke.dk>
Cc: Kir Kolyshkin <kir@openvz.org>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'rxrpc-next-20171111' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Tue, 14 Nov 2017 07:17:38 +0000 (16:17 +0900)]
Merge tag 'rxrpc-next-20171111' of git://git./linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Fixes

Here are some patches that fix some things in AF_RXRPC:

 (1) Prevent notifications from being passed to a kernel service for a call
     that it has ended.

 (2) Fix a null pointer deference that occurs under some circumstances when an
     ACK is generated.

 (3) Fix a number of things to do with call expiration.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnx2x: fix slowpath null crash
Zhu Yanjun [Sat, 11 Nov 2017 15:42:03 +0000 (10:42 -0500)]
bnx2x: fix slowpath null crash

When "NETDEV WATCHDOG: em4 (bnx2x): transmit queue 2 timed out" occurs,
BNX2X_SP_RTNL_TX_TIMEOUT is set. In the function bnx2x_sp_rtnl_task,
bnx2x_nic_unload and bnx2x_nic_load are executed to shutdown and open
NIC. In the function bnx2x_nic_load, bnx2x_alloc_mem allocates dma
failure. The message "bnx2x: [bnx2x_alloc_mem:8399(em4)]Can't
allocate memory" pops out. The variable slowpath is set to NULL.
When shutdown the NIC, the function bnx2x_nic_unload is called. In
the function bnx2x_nic_unload, the following functions are executed.
bnx2x_chip_cleanup
    bnx2x_set_storm_rx_mode
        bnx2x_set_q_rx_mode
            bnx2x_set_q_rx_mode
                bnx2x_config_rx_mode
                    bnx2x_set_rx_mode_e2
In the function bnx2x_set_rx_mode_e2, the variable slowpath is operated.
Then the crash occurs.
To fix this crash, the variable slowpath is checked. And in the function
bnx2x_sp_rtnl_task, after dma memory allocation fails, another shutdown
and open NIC is executed.

CC: Joe Jin <joe.jin@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Acked-by: Ariel Elior <aelior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'cxgb4-collect-LE-TCAM-and-SGE-queue-contexts'
David S. Miller [Tue, 14 Nov 2017 07:14:07 +0000 (16:14 +0900)]
Merge branch 'cxgb4-collect-LE-TCAM-and-SGE-queue-contexts'

Rahul Lakkireddy says:

====================
cxgb4: collect LE-TCAM and SGE queue contexts

Collect hardware dumps via ethtool --get-dump facility.

Patch 1 collects LE-TCAM dump.

Patch 2 collects SGE queue context dumps.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: collect SGE queue context dump
Rahul Lakkireddy [Sat, 11 Nov 2017 14:18:16 +0000 (19:48 +0530)]
cxgb4: collect SGE queue context dump

Collect SGE freelist queue and congestion manager contexts.

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>
6 years agocxgb4: collect LE-TCAM dump
Rahul Lakkireddy [Sat, 11 Nov 2017 14:18:15 +0000 (19:48 +0530)]
cxgb4: collect LE-TCAM dump

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>
6 years agovxlan: fix the issue that neigh proxy blocks all icmpv6 packets
Xin Long [Sat, 11 Nov 2017 11:58:50 +0000 (19:58 +0800)]
vxlan: fix the issue that neigh proxy blocks all icmpv6 packets

Commit f1fb08f6337c ("vxlan: fix ND proxy when skb doesn't have transport
header offset") removed icmp6_code and icmp6_type check before calling
neigh_reduce when doing neigh proxy.

It means all icmpv6 packets would be blocked by this, not only ns packet.
In Jianlin's env, even ping6 couldn't work through it.

This patch is to bring the icmp6_code and icmp6_type check back and also
removed the same check from neigh_reduce().

Fixes: f1fb08f6337c ("vxlan: fix ND proxy when skb doesn't have transport header offset")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Vincent Bernat <vincent@bernat.im>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoxfrm6_tunnel: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:34:03 +0000 (22:34 +0300)]
xfrm6_tunnel: exit_net cleanup check added

Be sure that spi_byaddr and spi_byspi arrays initialized in net_init hook
were return to initial state

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoppp: exit_net cleanup checks added
Vasily Averin [Sun, 12 Nov 2017 19:33:22 +0000 (22:33 +0300)]
ppp: exit_net cleanup checks added

Be sure that lists initialized in net_init hook were return
to initial state.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agophonet: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:32:47 +0000 (22:32 +0300)]
phonet: exit_net cleanup check added

Be sure that pndevs.list initialized in net_init hook was return
to initial state.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agol2tp: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:30:31 +0000 (22:30 +0300)]
l2tp: exit_net cleanup check added

Be sure that l2tp_session_hlist array initialized in net_init hook
was return to initial state.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agofib_rules: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:30:01 +0000 (22:30 +0300)]
fib_rules: exit_net cleanup check added

Be sure that rules_ops list initialized in net_init hook was return
to initial state.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agofib_notifier: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:29:33 +0000 (22:29 +0300)]
fib_notifier: exit_net cleanup check added

Be sure that fib_notifier_ops list initilized in net_init hook was return
to initial state.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetdev: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:28:46 +0000 (22:28 +0300)]
netdev: exit_net cleanup check added

Be sure that dev_base_head list initialized in net_init hook was return
to initial state

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agovxlan: exit_net cleanup checks added
Vasily Averin [Sun, 12 Nov 2017 19:28:10 +0000 (22:28 +0300)]
vxlan: exit_net cleanup checks added

Be sure that sock_list array initialized in net_init hook was return
to initial state

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agopacket: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:27:49 +0000 (22:27 +0300)]
packet: exit_net cleanup check added

Be sure that packet.sklist initialized in net_init hook was return
to initial state.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agogeneve: exit_net cleanup check added
Vasily Averin [Sun, 12 Nov 2017 19:27:19 +0000 (22:27 +0300)]
geneve: exit_net cleanup check added

Be sure that sock_list initialized in net_init hook was return
to initial state.

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoaf_key: replace BUG_ON on WARN_ON in net_exit hook
Vasily Averin [Sun, 12 Nov 2017 19:26:53 +0000 (22:26 +0300)]
af_key: replace BUG_ON on WARN_ON in net_exit hook

Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: Fix dependencies on bridge
Andrew Lunn [Sat, 11 Nov 2017 15:29:41 +0000 (16:29 +0100)]
net: dsa: Fix dependencies on bridge

DSA now uses one of the symbols exported by the bridge,
br_vlan_enabled(). This has a stub, if the bridge is not
enabled. However, if the bridge is enabled, we cannot have DSA built
in and the bridge as a module, otherwise we get undefined symbols at
link time:

   net/dsa/port.o: In function `dsa_port_vlan_add':
   net/dsa/port.c:255: undefined reference to `br_vlan_enabled'
   net/dsa/port.o: In function `dsa_port_vlan_del':
   net/dsa/port.c:270: undefined reference to `br_vlan_enabled'

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-improve-the-process-of-redirect-and-toobig-for-ipv6-tunnels'
David S. Miller [Mon, 13 Nov 2017 01:44:06 +0000 (10:44 +0900)]
Merge branch 'net-improve-the-process-of-redirect-and-toobig-for-ipv6-tunnels'

Xin Long says:

====================
net: improve the process of redirect and toobig for ipv6 tunnels

Now let's say there are 3 kinds of icmp packets to process for tunnels,
toobig(needfrag), redirect, others, their process should be:

 - toobig(needfrag)
   update the lower dst's pmtu by route cache, also update sk dst's pmtu
   if possible, or it will be fine if sk dst pmtu will get updated on tx
   path.

 - redirect
   update the lower dst's gw by route cache and return, no need to send
   this redirect packet to user sk.

 - others
   send the packet to user's sk, or it will also be fine to use err_count
   to count it and report fail link on tx path.

All ipv4 tunnels basically follow this while some of ipv6 tunnels are
doing in different ways, like ip6gre and ip6_tunnels update tnl dev's
mtu instead of updating lower dst pmtu, no redirect process on their
err_handlers, which doesn't make any sense and even causes performance
problems.

This patchset is to improve the process of redirect and toobig for ip6gre
ip4ip6, ip6ip6 tunnels, as in ipv4 tunnels.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoip6_tunnel: clean up ip4ip6 and ip6ip6's err_handlers
Xin Long [Sat, 11 Nov 2017 11:06:53 +0000 (19:06 +0800)]
ip6_tunnel: clean up ip4ip6 and ip6ip6's err_handlers

This patch is to remove some useless codes of redirect and fix some
indents on ip4ip6 and ip6ip6's err_handlers.

Note that redirect icmp packet is already processed in ip6_tnl_err,
the old redirect codes in ip4ip6_err actually never worked even
before this patch. Besides, there's no need to send redirect to
user's sk, it's for lower dst, so just remove it in this patch.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoip6_tunnel: process toobig in a better way
Xin Long [Sat, 11 Nov 2017 11:06:52 +0000 (19:06 +0800)]
ip6_tunnel: process toobig in a better way

The same improvement in "ip6_gre: process toobig in a better way"
is needed by ip4ip6 and ip6ip6 as well.

Note that ip4ip6 and ip6ip6 will also update sk dst pmtu in their
err_handlers. Like I said before, gre6 could not do this as it's
inner proto is not certain. But for all of them, sk dst pmtu will
be updated in tx path if in need.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoip6_tunnel: add the process for redirect in ip6_tnl_err
Xin Long [Sat, 11 Nov 2017 11:06:51 +0000 (19:06 +0800)]
ip6_tunnel: add the process for redirect in ip6_tnl_err

The same process for redirect in "ip6_gre: add the process for redirect
in ip6gre_err" is needed by ip4ip6 and ip6ip6 as well.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoip6_gre: process toobig in a better way
Xin Long [Sat, 11 Nov 2017 11:06:50 +0000 (19:06 +0800)]
ip6_gre: process toobig in a better way

Now ip6gre processes toobig icmp packet by setting gre dev's mtu in
ip6gre_err, which would cause few things not good:

  - It couldn't set mtu with dev_set_mtu due to it's not in user context,
    which causes route cache and idev->cnf.mtu6 not to be updated.

  - It has to update sk dst pmtu in tx path according to gredev->mtu for
    ip6gre, while it updates pmtu again according to lower dst pmtu in
    ip6_tnl_xmit.

  - To change dev->mtu by toobig icmp packet is not a good idea, it should
    only work on pmtu.

This patch is to process toobig by updating the lower dst's pmtu, as later
sk dst pmtu will be updated in ip6_tnl_xmit, the same way as in ip4gre.

Note that gre dev's mtu will not be updated any more, it doesn't make any
sense to change dev's mtu after receiving a toobig packet.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoip6_gre: add the process for redirect in ip6gre_err
Xin Long [Sat, 11 Nov 2017 11:06:49 +0000 (19:06 +0800)]
ip6_gre: add the process for redirect in ip6gre_err

This patch is to add redirect icmp packet process for ip6gre by
calling ip6_redirect() in ip6gre_err(), as in vti6_err.

Prior to this patch, there's even no route cache generated after
receiving redirect.

Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoforcedeth: remove redudant assignments in xmit
Zhu Yanjun [Sat, 11 Nov 2017 02:10:00 +0000 (21:10 -0500)]
forcedeth: remove redudant assignments in xmit

In xmit process, the variables are set many times. In fact,
it is enough for these variables to be set once.
After a long time test, the throughput performance is better
than before.

CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Joe Jin <joe.jin@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'nfc-next-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo...
David S. Miller [Mon, 13 Nov 2017 01:39:12 +0000 (10:39 +0900)]
Merge tag 'nfc-next-4.15-1' of git://git./linux/kernel/git/sameo/nfc-next

Samuel Ortiz says:

====================
NFC 4.15 pull request

This is the NFC pull request for 4.15. We have:

- A new netlink command for explicitly deactivating NFC targets
- i2c constification for all NFC drivers
- One NFC device allocation error path fix
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'Openvswitch-meter-action'
David S. Miller [Mon, 13 Nov 2017 01:37:08 +0000 (10:37 +0900)]
Merge branch 'Openvswitch-meter-action'

Andy Zhou says:

====================
Openvswitch meter action

This patch series is the first attempt to add openvswitch
meter support. We have previously experimented with adding
metering support in nftables. However 1) It was not clear
how to expose a named nftables object cleanly, and 2)
the logic that implements metering is quite small, < 100 lines
of code.

With those two observations, it seems cleaner to add meter
support in the openvswitch module directly.

---

    v1(RFC)->v2:  remove unused code improve locking
  and other review comments
    v2 -> v3:     rebase
    v3 -> v4:     fix undefined "__udivdi3" references on 32 bit builds.
                  use div_u64() instead.
    v4 -> v5:     rebase
====================

Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: Add meter action support
Andy Zhou [Fri, 10 Nov 2017 20:09:43 +0000 (12:09 -0800)]
openvswitch: Add meter action support

Implements OVS kernel meter action support.

Signed-off-by: Andy Zhou <azhou@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: Add meter infrastructure
Andy Zhou [Fri, 10 Nov 2017 20:09:42 +0000 (12:09 -0800)]
openvswitch: Add meter infrastructure

OVS kernel datapath so far does not support Openflow meter action.
This is the first stab at adding kernel datapath meter support.
This implementation supports only drop band type.

Signed-off-by: Andy Zhou <azhou@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: export get_dp() API.
Andy Zhou [Fri, 10 Nov 2017 20:09:41 +0000 (12:09 -0800)]
openvswitch: export get_dp() API.

Later patches will invoke get_dp() outside of datapath.c. Export it.

Signed-off-by: Andy Zhou <azhou@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoopenvswitch: Add meter netlink definitions
Andy Zhou [Fri, 10 Nov 2017 20:09:40 +0000 (12:09 -0800)]
openvswitch: Add meter netlink definitions

Meter has its own netlink family. Define netlink messages and attributes
for communicating with the user space programs.

Signed-off-by: Andy Zhou <azhou@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'dsa-b53-Support-prepended-Broadcom-tags'
David S. Miller [Mon, 13 Nov 2017 01:34:55 +0000 (10:34 +0900)]
Merge branch 'dsa-b53-Support-prepended-Broadcom-tags'

Florian Fainelli says:

====================
net: dsa: b53: Support prepended Broadcom tags

This patch series adds support for prepended 4-bytes Broadcom tags that we
already support. This type of tag will typically be used when interfaced to
a SoC like BCM58xx (NorthStar Plus) which supports a Flow Accelerator (WIP).
In that case, we need to support a slightly different tagging format.

The first patch does a bit of re-factoring and passes a port index to
the get_tag_protocol() function since at least two different drivers need
that type of information (mt7530, b53) to support tagging or not.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: b53: Support prepended Broadcom tags
Florian Fainelli [Fri, 10 Nov 2017 23:22:55 +0000 (15:22 -0800)]
net: dsa: b53: Support prepended Broadcom tags

On BCM58xx devices (Northstar Plus), there is an accelerator attached to
port 8 which would only work if we use prepended Broadcom tags. Resolve
that difference in our get_tag_protocol() function by setting the
appropriate tagging protocol in that case. We need to change
b53_brcm_hdr_setup() a little bit now since we can deal with two types
of Broadcom tags.

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>
6 years agonet: dsa: Support prepended Broadcom tag
Florian Fainelli [Fri, 10 Nov 2017 23:22:54 +0000 (15:22 -0800)]
net: dsa: Support prepended Broadcom tag

Add a new type: DSA_TAG_PROTO_PREPEND which allows us to support for the
4-bytes Broadcom tag that we already support, but in a format where it
is pre-pended to the packet instead of located between the MAC SA and
the Ethertyper (DSA_TAG_PROTO_BRCM).

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>
6 years agonet: dsa: tag_brcm: Prepare for supporting prepended tag
Florian Fainelli [Fri, 10 Nov 2017 23:22:53 +0000 (15:22 -0800)]
net: dsa: tag_brcm: Prepare for supporting prepended tag

In preparation for supporting the same Broadcom tag format, but instead
of inserted between the MAC SA and EtherType, prepended to the Ethernet
frame, restructure the code a little bit to make that possible and take
an offset parameter.

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>
6 years agonet: dsa: Pass a port to get_tag_protocol()
Florian Fainelli [Fri, 10 Nov 2017 23:22:52 +0000 (15:22 -0800)]
net: dsa: Pass a port to get_tag_protocol()

A number of drivers want to check whether the configured CPU port is a
possible configuration for enabling tagging, pass down the CPU port
number so they verify that.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/sched/sch_red.c: work around gcc-4.4.4 anon union initializer issue
Andrew Morton [Fri, 10 Nov 2017 23:09:53 +0000 (15:09 -0800)]
net/sched/sch_red.c: work around gcc-4.4.4 anon union initializer issue

gcc-4.4.4 (at lest) has issues with initializers and anonymous unions:

net/sched/sch_red.c: In function 'red_dump_offload':
net/sched/sch_red.c:282: error: unknown field 'stats' specified in initializer
net/sched/sch_red.c:282: warning: initialization makes integer from pointer without a cast
net/sched/sch_red.c:283: error: unknown field 'stats' specified in initializer
net/sched/sch_red.c:283: warning: initialization makes integer from pointer without a cast
net/sched/sch_red.c: In function 'red_dump_stats':
net/sched/sch_red.c:352: error: unknown field 'xstats' specified in initializer
net/sched/sch_red.c:352: warning: initialization makes integer from pointer without a cast

Work around this.

Fixes: 602f3baf2218 ("net_sch: red: Add offload ability to RED qdisc")
Cc: Nogah Frankel <nogahf@mellanox.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Simon Horman <simon.horman@netronome.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4: Use Kconfig flag to remove support of old gen2 Mellanox devices
Slava Shwartsman [Fri, 10 Nov 2017 07:10:29 +0000 (09:10 +0200)]
net/mlx4: Use Kconfig flag to remove support of old gen2 Mellanox devices

Since Mellanox focus is on newer adapters, we would like to have the
ability to disable the support for old gen2 adapters.

This can be done by turning off the MLX4_CORE_GEN2 Kconfig flag.
We keep it turned on by default.

Signed-off-by: Slava Shwartsman <slavash@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoaf_netlink: ensure that NLMSG_DONE never fails in dumps
Jason A. Donenfeld [Thu, 9 Nov 2017 04:04:44 +0000 (13:04 +0900)]
af_netlink: ensure that NLMSG_DONE never fails in dumps

The way people generally use netlink_dump is that they fill in the skb
as much as possible, breaking when nla_put returns an error. Then, they
get called again and start filling out the next skb, and again, and so
forth. The mechanism at work here is the ability for the iterative
dumping function to detect when the skb is filled up and not fill it
past the brim, waiting for a fresh skb for the rest of the data.

However, if the attributes are small and nicely packed, it is possible
that a dump callback function successfully fills in attributes until the
skb is of size 4080 (libmnl's default page-sized receive buffer size).
The dump function completes, satisfied, and then, if it happens to be
that this is actually the last skb, and no further ones are to be sent,
then netlink_dump will add on the NLMSG_DONE part:

  nlh = nlmsg_put_answer(skb, cb, NLMSG_DONE, sizeof(len), NLM_F_MULTI);

It is very important that netlink_dump does this, of course. However, in
this example, that call to nlmsg_put_answer will fail, because the
previous filling by the dump function did not leave it enough room. And
how could it possibly have done so? All of the nla_put variety of
functions simply check to see if the skb has enough tailroom,
independent of the context it is in.

In order to keep the important assumptions of all netlink dump users, it
is therefore important to give them an skb that has this end part of the
tail already reserved, so that the call to nlmsg_put_answer does not
fail. Otherwise, library authors are forced to find some bizarre sized
receive buffer that has a large modulo relative to the common sizes of
messages received, which is ugly and buggy.

This patch thus saves the NLMSG_DONE for an additional message, for the
case that things are dangerously close to the brim. This requires
keeping track of the errno from ->dump() across calls.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'netem-add-nsec-scheduling-and-slot-feature'
David S. Miller [Mon, 13 Nov 2017 01:15:47 +0000 (10:15 +0900)]
Merge branch 'netem-add-nsec-scheduling-and-slot-feature'

Dave Taht says:

====================
netem: add nsec scheduling and slot feature

This patch series converts netem away from the old "ticks" interface and
userspace API, and adds support for a new "slot" feature intended to
emulate bursty macs such as WiFi and LTE better.

Changes since v2:
Use u64 for packet_len_sched_time()
Use simpler max(time_to_send,q->slot.slot_next)

Changes since v1:
Always pass new nanosecond APIs to userspace
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetem: support delivering packets in delayed time slots
Dave Taht [Wed, 8 Nov 2017 23:12:28 +0000 (15:12 -0800)]
netem: support delivering packets in delayed time slots

Slotting is a crude approximation of the behaviors of shared media such
as cable, wifi, and LTE, which gather up a bunch of packets within a
varying delay window and deliver them, relative to that, nearly all at
once.

It works within the existing loss, duplication, jitter and delay
parameters of netem. Some amount of inherent latency must be specified,
regardless.

The new "slot" parameter specifies a minimum and maximum delay between
transmission attempts.

The "bytes" and "packets" parameters can be used to limit the amount of
information transferred per slot.

Examples of use:

tc qdisc add dev eth0 root netem delay 200us \
         slot 800us 10ms bytes 64k packets 42

A more correct example, using stacked netem instances and a packet limit
to emulate a tail drop wifi queue with slots and variable packet
delivery, with a 200Mbit isochronous underlying rate, and 20ms path
delay:

tc qdisc add dev eth0 root handle 1: netem delay 20ms rate 200mbit \
         limit 10000
tc qdisc add dev eth0 parent 1:1 handle 10:1 netem delay 200us \
         slot 800us 10ms bytes 64k packets 42 limit 512

Signed-off-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetem: add uapi to express delay and jitter in nanoseconds
Dave Taht [Wed, 8 Nov 2017 23:12:27 +0000 (15:12 -0800)]
netem: add uapi to express delay and jitter in nanoseconds

netem userspace has long relied on a horrible /proc/net/psched hack
to translate the current notion of "ticks" to nanoseconds.

Expressing latency and jitter instead, in well defined nanoseconds,
increases the dynamic range of emulated delays and jitter in netem.

It will also ease a transition where reducing a tick to nsec
equivalence would constrain the max delay in prior versions of
netem to only 4.3 seconds.

Signed-off-by: Dave Taht <dave.taht@gmail.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetem: convert to qdisc_watchdog_schedule_ns
Dave Taht [Wed, 8 Nov 2017 23:12:26 +0000 (15:12 -0800)]
netem: convert to qdisc_watchdog_schedule_ns

Upgrade the internal netem scheduler to use nanoseconds rather than
ticks throughout.

Convert to and from the std "ticks" userspace api automatically,
while allowing for finer grained scheduling to take place.

Signed-off-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv6: try not to take rtnl_lock in ip6mr_sk_done
Francesco Ruggeri [Wed, 8 Nov 2017 19:23:46 +0000 (11:23 -0800)]
ipv6: try not to take rtnl_lock in ip6mr_sk_done

Avoid traversing the list of mr6_tables (which requires the
rtnl_lock) in ip6mr_sk_done(), when we know in advance that
a match will not be found.
This can happen when rawv6_close()/ip6mr_sk_done() is invoked
on non-mroute6 sockets.
This patch helps reduce rtnl_lock contention when destroying
a large number of net namespaces, each having a non-mroute6
raw socket.

v2: same patch, only fixed subject line and expanded comment.

Signed-off-by: Francesco Ruggeri <fruggeri@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: realtek: r8169: remove redundant assignment to giga_ctrl
Colin Ian King [Wed, 8 Nov 2017 13:23:23 +0000 (13:23 +0000)]
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>
6 years agonet: dsa: lan9303: Documentation: Add missing word "Mbps"
Egil Hjelmeland [Wed, 8 Nov 2017 10:55:14 +0000 (11:55 +0100)]
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>
6 years agonet: dsa: lan9303: Fix lan9303_alr_del_port()
Egil Hjelmeland [Wed, 8 Nov 2017 10:44:36 +0000 (11:44 +0100)]
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: 0620427ea0d6 ("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>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Sun, 12 Nov 2017 00:17:05 +0000 (09:17 +0900)]
Merge git://git./linux/kernel/git/davem/net

6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 11 Nov 2017 17:10:39 +0000 (09:10 -0800)]
Merge git://git./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

6 years agoMerge tag 'wireless-drivers-next-for-davem-2017-11-11' of git://git.kernel.org/pub...
David S. Miller [Sat, 11 Nov 2017 13:37:22 +0000 (22:37 +0900)]
Merge tag 'wireless-drivers-next-for-davem-2017-11-11' of git://git./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>
6 years agonet: Remove unused skb_shared_info member
Mat Martineau [Fri, 10 Nov 2017 22:03:51 +0000 (14:03 -0800)]
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>
6 years agoMerge branch 'l2tp-avoid-aliasing-tunnels-socket-pointer'
David S. Miller [Sat, 11 Nov 2017 13:08:24 +0000 (22:08 +0900)]
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>
6 years agol2tp: remove the .tunnel_sock field from struct pppol2tp_session
Guillaume Nault [Fri, 10 Nov 2017 21:06:37 +0000 (06:06 +0900)]
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>