linux-2.6-microblaze.git
6 years agonet/mlx4_core: Use msi_x module param to limit num of MSI-X irqs
Tariq Toukan [Wed, 9 May 2018 15:29:04 +0000 (18:29 +0300)]
net/mlx4_core: Use msi_x module param to limit num of MSI-X irqs

Extend the boolean interpretation of msi_x module parameter
to numerical, as follows:

0   - Don't use MSI-X.
1   - Use MSI-X, driver decides the num of MSI-X irqs.
>=2 - Use MSI-X, limit number of MSI-X irqs to msi_x.
      In SRIOV, this limits the number of MSI-X irqs per VF.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Cc: Ajaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
Reviewed-by: Ajaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_core: Add PCI calls for suspend/resume
Yishai Hadas [Wed, 9 May 2018 15:29:03 +0000 (18:29 +0300)]
net/mlx4_core: Add PCI calls for suspend/resume

Implement suspend/resume callbacks in struct pci_driver.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_core: Report driver version to FW
Eran Ben Elisha [Wed, 9 May 2018 15:29:02 +0000 (18:29 +0300)]
net/mlx4_core: Report driver version to FW

If supported, write a driver version string to FW as part of the
INIT_HCA command.

Example of driver version: "Linux,mlx4_core,4.0-0"

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: fix added_by_user switchdev notification
Vivien Didelot [Wed, 9 May 2018 03:03:12 +0000 (23:03 -0400)]
net: dsa: fix added_by_user switchdev notification

Commit 161d82de1ff8 ("net: bridge: Notify about !added_by_user FDB
entries") causes the below oops when bringing up a slave interface,
because dsa_port_fdb_add is still scheduled, but with a NULL address.

To fix this, keep the dsa_slave_switchdev_event function agnostic of the
notified info structure and handle the added_by_user flag in the
specific dsa_slave_switchdev_event_work function.

    [   75.512263] Unable to handle kernel NULL pointer dereference at virtual address 00000000
    [   75.519063] pgd = (ptrval)
    [   75.520545] [00000000] *pgd=00000000
    [   75.522839] Internal error: Oops: 17 [#1] ARM
    [   75.525898] Modules linked in:
    [   75.527673] CPU: 0 PID: 9 Comm: kworker/u2:1 Not tainted 4.17.0-rc2 #78
    [   75.532988] Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree)
    [   75.538153] Workqueue: dsa_ordered dsa_slave_switchdev_event_work
    [   75.542970] PC is at mv88e6xxx_port_db_load_purge+0x60/0x1b0
    [   75.547341] LR is at mdiobus_read_nested+0x6c/0x78
    [   75.550833] pc : [<804cd5c0>]    lr : [<804bba84>]    psr: 60070013
    [   75.555796] sp : 9f54bd78  ip : 9f54bd87  fp : 9f54bddc
    [   75.559719] r10: 00000000  r9 : 0000000e  r8 : 9f6a6010
    [   75.563643] r7 : 00000000  r6 : 81203048  r5 : 9f6a6010  r4 : 9f6a601c
    [   75.568867] r3 : 00000000  r2 : 00000000  r1 : 0000000d  r0 : 00000000
    [   75.574094] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
    [   75.579933] Control: 10c53c7d  Table: 9de20059  DAC: 00000051
    [   75.584384] Process kworker/u2:1 (pid: 9, stack limit = 0x(ptrval))
    [   75.589349] Stack: (0x9f54bd78 to 0x9f54c000)
    [   75.592406] bd60:                                                       00000000 00000000
    [   75.599295] bd80: 00000391 9f299d10 9f299d68 8014317c 9f7f0000 8120af00 00006dc2 00000000
    [   75.606186] bda0: 8120af00 00000000 9f54bdec 1c9f5d92 8014317c 9f6a601c 9f6a6010 00000000
    [   75.613076] bdc0: 00000000 00000000 9dd1141c 8125a0b4 9f54be0c 9f54bde0 804cd8a8 804cd56c
    [   75.619966] bde0: 0000000e 80143680 00000001 9dce9c1c 81203048 9dce9c10 00000003 00000000
    [   75.626858] be00: 9f54be5c 9f54be10 806abcac 804cd864 9f54be54 80143664 8014317c 80143054
    [   75.633748] be20: ffcaa81d 00000000 812030b0 1c9f5d92 00000000 81203048 9f54beb4 00000003
    [   75.640639] be40: ffffffff 00000000 9dd1141c 8125a0b4 9f54be84 9f54be60 80138e98 806abb18
    [   75.647529] be60: 81203048 9ddc4000 9dce9c54 9f72a300 00000000 00000000 9f54be9c 9f54be88
    [   75.654420] be80: 801390bc 80138e50 00000000 9dce9c54 9f54beac 9f54bea0 806a9524 801390a0
    [   75.661310] bea0: 9f54bedc 9f54beb0 806a9c7c 806a950c 9f54becc 00000000 00000000 00000000
    [   75.668201] bec0: 9f540000 1c9f5d92 805fe604 9ddffc00 9f54befc 9f54bee0 806ab228 806a9c38
    [   75.675092] bee0: 806ab178 9ddffc00 9f4c1900 9f40d200 9f54bf34 9f54bf00 80131e30 806ab184
    [   75.681983] bf00: 9f40d214 9f54a038 9f40d200 9f40d200 9f4c1918 812119a0 9f40d214 9f54a038
    [   75.688873] bf20: 9f40d200 9f4c1900 9f54bf7c 9f54bf38 80132124 80131d1c 9f5f2dd8 00000000
    [   75.695764] bf40: 812119a0 9f54a038 812119a0 81259c5b 9f5f2dd8 9f5f2dc0 9f53dbc0 00000000
    [   75.702655] bf60: 9f4c1900 801320b4 9f5f2dd8 9f4f7e88 9f54bfac 9f54bf80 80137ad0 801320c0
    [   75.709544] bf80: 9f54a000 9f53dbc0 801379a0 00000000 00000000 00000000 00000000 00000000
    [   75.716434] bfa0: 00000000 9f54bfb0 801010e8 801379ac 00000000 00000000 00000000 00000000
    [   75.723324] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [   75.730206] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
    [   75.737083] Backtrace:
    [   75.738252] [<804cd560>] (mv88e6xxx_port_db_load_purge) from [<804cd8a8>] (mv88e6xxx_port_fdb_add+0x50/0x68)
    [   75.746795]  r10:8125a0b4 r9:9dd1141c r8:00000000 r7:00000000 r6:00000000 r5:9f6a6010
    [   75.753323]  r4:9f6a601c
    [   75.754570] [<804cd858>] (mv88e6xxx_port_fdb_add) from [<806abcac>] (dsa_switch_event+0x1a0/0x660)
    [   75.762238]  r8:00000000 r7:00000003 r6:9dce9c10 r5:81203048 r4:9dce9c1c
    [   75.767655] [<806abb0c>] (dsa_switch_event) from [<80138e98>] (notifier_call_chain+0x54/0x94)
    [   75.774893]  r10:8125a0b4 r9:9dd1141c r8:00000000 r7:ffffffff r6:00000003 r5:9f54beb4
    [   75.781423]  r4:81203048
    [   75.782672] [<80138e44>] (notifier_call_chain) from [<801390bc>] (raw_notifier_call_chain+0x28/0x30)
    [   75.790514]  r9:00000000 r8:00000000 r7:9f72a300 r6:9dce9c54 r5:9ddc4000 r4:81203048
    [   75.796982] [<80139094>] (raw_notifier_call_chain) from [<806a9524>] (dsa_port_notify+0x24/0x38)
    [   75.804483] [<806a9500>] (dsa_port_notify) from [<806a9c7c>] (dsa_port_fdb_add+0x50/0x6c)
    [   75.811371] [<806a9c2c>] (dsa_port_fdb_add) from [<806ab228>] (dsa_slave_switchdev_event_work+0xb0/0x10c)
    [   75.819635]  r4:9ddffc00
    [   75.820885] [<806ab178>] (dsa_slave_switchdev_event_work) from [<80131e30>] (process_one_work+0x120/0x3a4)
    [   75.829241]  r6:9f40d200 r5:9f4c1900 r4:9ddffc00 r3:806ab178
    [   75.833612] [<80131d10>] (process_one_work) from [<80132124>] (worker_thread+0x70/0x574)
    [   75.840415]  r10:9f4c1900 r9:9f40d200 r8:9f54a038 r7:9f40d214 r6:812119a0 r5:9f4c1918
    [   75.846945]  r4:9f40d200
    [   75.848191] [<801320b4>] (worker_thread) from [<80137ad0>] (kthread+0x130/0x160)
    [   75.854300]  r10:9f4f7e88 r9:9f5f2dd8 r8:801320b4 r7:9f4c1900 r6:00000000 r5:9f53dbc0
    [   75.860830]  r4:9f5f2dc0
    [   75.862076] [<801379a0>] (kthread) from [<801010e8>] (ret_from_fork+0x14/0x2c)
    [   75.867999] Exception stack(0x9f54bfb0 to 0x9f54bff8)
    [   75.871753] bfa0:                                     00000000 00000000 00000000 00000000
    [   75.878640] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
    [   75.885519] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
    [   75.890844]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:801379a0
    [   75.897377]  r4:9f53dbc0 r3:9f54a000
    [   75.899663] Code: e3a02000 e3a03000 e14b26f4 e24bc055 (e5973000)
    [   75.904575] ---[ end trace fbca818a124dbf0d ]---

Fixes: 816a3bed9549 ("switchdev: Add fdb.added_by_user to switchdev notifications")
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: clean up removal of binding table items
Jon Maloy [Wed, 9 May 2018 00:59:41 +0000 (02:59 +0200)]
tipc: clean up removal of binding table items

In commit be47e41d77fb ("tipc: fix use-after-free in tipc_nametbl_stop")
we fixed a problem caused by premature release of service range items.

That fix is correct, and solved the problem. However, it doesn't address
the root of the problem, which is that we don't lookup the tipc_service
 -> service_range -> publication items in the correct hierarchical
order.

In this commit we try to make this right, and as a side effect obtain
some code simplification.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotun: Do SIOCGSKNS out of rtnl_lock()
Kirill Tkhai [Tue, 8 May 2018 16:21:34 +0000 (19:21 +0300)]
tun: Do SIOCGSKNS out of rtnl_lock()

Since net ns of tun device is assigned on the device creation,
and it never changes, we do not need to use any lock to get it
from alive tun.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'net-Update-static-keys-to-modern-api'
David S. Miller [Thu, 10 May 2018 19:13:35 +0000 (15:13 -0400)]
Merge branch 'net-Update-static-keys-to-modern-api'

Davidlohr Bueso says:

====================
net: Update static keys to modern api

The following patches update pretty much all core net static key users
to the modern api. Changes are mostly trivial conversion without affecting
any semantics. The motivation is a resend of patches 1 and 2 from a while[1]
back, and the rest are added patches, specific for -net.

Applies against today's linux-next. Compile tested only.

[1] lkml.kernel.org/r/20180326210929.5244-1-dave@stgolabs.net
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/udp: Update udp_encap_needed static key to modern api
Davidlohr Bueso [Tue, 8 May 2018 16:07:03 +0000 (09:07 -0700)]
net/udp: Update udp_encap_needed static key to modern api

No changes in refcount semantics -- key init is false; replace

static_key_enable         with   static_branch_enable
static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Added a '_key' suffix to udp and udpv6 encap_needed, for better
self documentation.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Update generic_xdp_needed static key to modern api
Davidlohr Bueso [Tue, 8 May 2018 16:07:02 +0000 (09:07 -0700)]
net: Update generic_xdp_needed static key to modern api

No changes in refcount semantics -- key init is false; replace

static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Added a '_key' suffix to generic_xdp_needed, for better self
documentation.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Update netstamp_needed static key to modern api
Davidlohr Bueso [Tue, 8 May 2018 16:07:01 +0000 (09:07 -0700)]
net: Update netstamp_needed static key to modern api

No changes in refcount semantics -- key init is false; replace

static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Added a '_key' suffix to netstamp_needed, for better self
documentation.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: Update [e/in]gress_needed static key to modern api
Davidlohr Bueso [Tue, 8 May 2018 16:07:00 +0000 (09:07 -0700)]
net: Update [e/in]gress_needed static key to modern api

No changes in semantics -- key init is false; replace

static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Added a '_key' suffix to both ingress_needed and egress_needed,
for better self documentation.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/sock: Update memalloc_socks static key to modern api
Davidlohr Bueso [Tue, 8 May 2018 16:06:59 +0000 (09:06 -0700)]
net/sock: Update memalloc_socks static key to modern api

No changes in refcount semantics -- key init is false; replace

static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Added a '_key' suffix to memalloc_socks, for better self
documentation.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/ipv4: Update ip_tunnel_metadata_cnt static key to modern api
Davidlohr Bueso [Tue, 8 May 2018 16:06:58 +0000 (09:06 -0700)]
net/ipv4: Update ip_tunnel_metadata_cnt static key to modern api

No changes in refcount semantics -- key init is false; replace

static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: mv88e6xxx: 88E6141/6341 SERDES support
Marek BehĂșn [Fri, 4 May 2018 17:26:10 +0000 (19:26 +0200)]
net: dsa: mv88e6xxx: 88E6141/6341 SERDES support

The 88E6141/6341 switches (also known as Topaz) have 1 SGMII lane,
which can be configured the same way as the SERDES lane on 88E6390.

Signed-off-by: Marek Behun <marek.behun@nic.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: stmmac: Add support for U32 TC filter using Flexible RX Parser
Jose Abreu [Fri, 4 May 2018 09:01:38 +0000 (10:01 +0100)]
net: stmmac: Add support for U32 TC filter using Flexible RX Parser

This adds support for U32 filter by using an HW only feature called
Flexible RX Parser. This allow us to match any given packet field with a
pattern and accept/reject or even route the packet to a specific DMA
channel.

Right now we only support acception or rejection of frame and we only
support simple rules. Though, the Parser has the flexibility of jumping to
specific rules as an if condition so complex rules can be established.

This is only supported in GMAC5.10+.

The following commands can be used to test this code:

1) Setup an ingress qdisk:
# tc qdisc add dev eth0 handle ffff: ingress

2) Setup a filter (e.g. filter by IP):
# tc filter add dev eth0 parent ffff: protocol ip u32 match ip \
src 192.168.0.3 skip_sw action drop

In every tests performed we always used the "skip_sw" flag to make sure
only the RX Parser was involved.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: hns3: Add support of hardware rx-vlan-offload to HNS3 VF driver
Yunsheng Lin [Thu, 3 May 2018 16:28:11 +0000 (17:28 +0100)]
net: hns3: Add support of hardware rx-vlan-offload to HNS3 VF driver

This patch adds support of hardware rx-vlan-offload to VF driver.
VF uses mailbox to convey PF to configure the hardware.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomicrochip_t1: Add driver for Microchip LAN87XX T1 PHYs
Nisar Sayed [Wed, 2 May 2018 15:39:17 +0000 (21:09 +0530)]
microchip_t1: Add driver for Microchip LAN87XX T1 PHYs

Add driver for Microchip LAN87XX T1 PHYs

This patch support driver for Microchp T1 PHYs.
There will be followup patches to this driver to support T1 PHY
features such as cable diagnostics, signal quality indicator(SQI),
sleep and wakeup (TC10) support.

Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'mlx5-updates-2018-05-07' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Thu, 10 May 2018 12:17:55 +0000 (08:17 -0400)]
Merge tag 'mlx5-updates-2018-05-07' of git://git./linux/kernel/git/mellanox/linux

Saeed Mahameed says:

====================
mlx5-updates-2018-05-07

mlx5 core driver misc cleanups and updates:
 - fix spelling mistake: "modfiy" -> "modify"
 - Cleanup unused field in Work Queue parameters
 - dump_command mailbox length printed
 - Refactor num of blocks in mailbox calculation
 - Decrease level of prints about non-existent MKEY
 - remove some extraneous spaces in indentations
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'udp-gso-cleanups'
David S. Miller [Wed, 9 May 2018 02:30:06 +0000 (22:30 -0400)]
Merge branch 'udp-gso-cleanups'

Alexander Duyck says:

====================
UDP GSO Segmentation clean-ups

This patch set addresses a number of issues I found while sorting out
enabling UDP GSO Segmentation support for ixgbe/ixgbevf. Specifically there
were a number of issues related to the checksum and such that seemed to
cause either minor irregularities or kernel panics in the case of the
offload request being allowed to traverse between name spaces.

With this set applied I am was able to get UDP GSO traffic to pass over
vxlan tunnels in both offloaded modes and non-offloaded modes for ixgbe and
ixgbevf.

I submitted the driver specific patches earlier as an RFC:
https://patchwork.ozlabs.org/project/netdev/list/?series=42477&archive=both&state=*

v2: Updated patches based on feedback from Eric Dumazet
    Split first patch into several patches based on feedback from Eric
v3: Drop patch that was calling pskb_may_pull as it was redundant.
    Added code to use MANGLED_0 in case of UDP checksum
    Drop patch adding NETIF_F_GSO_UDP_L4 to list of GSO software offloads
    Added Acked-by for patches reviewed by Willem and not changed
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoudp: Do not copy destructor if one is not present
Alexander Duyck [Mon, 7 May 2018 18:08:52 +0000 (11:08 -0700)]
udp: Do not copy destructor if one is not present

This patch makes it so that if a destructor is not present we avoid trying
to update the skb socket or any reference counting that would be associated
with the NULL socket and/or descriptor. By doing this we can support
traffic coming from another namespace without any issues.

Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoudp: Add support for software checksum and GSO_PARTIAL with GSO offload
Alexander Duyck [Mon, 7 May 2018 18:08:46 +0000 (11:08 -0700)]
udp: Add support for software checksum and GSO_PARTIAL with GSO offload

This patch adds support for a software provided checksum and GSO_PARTIAL
segmentation support. With this we can offload UDP segmentation on devices
that only have partial support for tunnels.

Since we are no longer needing the hardware checksum we can drop the checks
in the segmentation code that were verifying if it was present.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoudp: Partially unroll handling of first segment and last segment
Alexander Duyck [Mon, 7 May 2018 18:08:40 +0000 (11:08 -0700)]
udp: Partially unroll handling of first segment and last segment

This patch allows us to take care of unrolling the first segment and the
last segment of the loop for processing the segmented skb. Part of the
motivation for this is that it makes it easier to process the fact that the
first fame and all of the frames in between should be mostly identical
in terms of header data, and the last frame has differences in the length
and partial checksum.

In addition I am dropping the header length calculation since we don't
really need it for anything but the last frame and it can be easily
obtained by just pulling the data_len and offset of tail from the transport
header.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoudp: Do not pass checksum as a parameter to GSO segmentation
Alexander Duyck [Mon, 7 May 2018 18:08:34 +0000 (11:08 -0700)]
udp: Do not pass checksum as a parameter to GSO segmentation

This patch is meant to allow us to avoid having to recompute the checksum
from scratch and have it passed as a parameter.

Instead of taking that approach we can take advantage of the fact that the
length that was used to compute the existing checksum is included in the
UDP header.

Finally to avoid the need to invert the result we can just call csum16_add
and csum16_sub directly. By doing this we can avoid a number of
instructions in the loop that is handling segmentation.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoudp: Do not pass MSS as parameter to GSO segmentation
Alexander Duyck [Mon, 7 May 2018 18:08:28 +0000 (11:08 -0700)]
udp: Do not pass MSS as parameter to GSO segmentation

There is no point in passing MSS as a parameter for for the GSO
segmentation call as it is already available via the shared info for the
skb itself.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoudp: Record gso_segs when supporting UDP segmentation offload
Alexander Duyck [Mon, 7 May 2018 18:08:22 +0000 (11:08 -0700)]
udp: Record gso_segs when supporting UDP segmentation offload

We need to record the number of segments that will be generated when this
frame is segmented. The expectation is that if gso_size is set then
gso_segs is set as well. Without this some drivers such as ixgbe get
confused if they attempt to offload this as they record 0 segments for the
entire packet instead of the correct value.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agodt-bindings: dsa: Remove unnecessary #address/#size-cells
Fabio Estevam [Mon, 7 May 2018 12:17:51 +0000 (09:17 -0300)]
dt-bindings: dsa: Remove unnecessary #address/#size-cells

If the example binding is used on a real dts file, the following DTC
warning is seen with W=1:

arch/arm/boot/dts/imx6q-b450v3.dtb: Warning (avoid_unnecessary_addr_size): /mdio-gpio/switch@0: unnecessary #address-cells/#size-cells without "ranges" or child "reg" property

Remove unnecessary #address-cells/#size-cells to improve the binding
document examples.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: sfp: handle cases where neither BR, min nor BR, max is given
Antoine Tenart [Fri, 4 May 2018 15:21:03 +0000 (17:21 +0200)]
net: phy: sfp: handle cases where neither BR, min nor BR, max is given

When computing the bitrate using values read from an SFP module EEPROM,
we use the nominal BR plus BR,min and BR,max to determine the
boundaries. But in some cases BR,min and BR,max aren't provided, which
led the SFP code to end up having the nominal value for both the minimum
and maximum bitrate values. When using a passive cable, the nominal
value should be used as the maximum one, and there is no minimum one
so we should use 0.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'bnxt_en-Fixes-for-net-next'
David S. Miller [Tue, 8 May 2018 14:14:22 +0000 (10:14 -0400)]
Merge branch 'bnxt_en-Fixes-for-net-next'

Michael Chan says:

====================
bnxt_en: Fixes for net-next.

This series includes a bug fix for a regression in firmware message polling
introduced recently on net-next.  There are 3 additional minor fixes for
unsupported link speed checking, VF MAC address handling, and setting
PHY eeprom length.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Always forward VF MAC address to the PF.
Michael Chan [Tue, 8 May 2018 07:18:41 +0000 (03:18 -0400)]
bnxt_en: Always forward VF MAC address to the PF.

The current code already forwards the VF MAC address to the PF, except
in one case.  If the VF driver gets a valid MAC address from the firmware
during probe time, it will not forward the MAC address to the PF,
incorrectly assuming that the PF already knows the MAC address.  This
causes "ip link show" to show zero VF MAC addresses for this case.

This assumption is not correct.  Newer firmware remembers the VF MAC
address last used by the VF and provides it to the VF driver during
probe.  So we need to always forward the VF MAC address to the PF.

The forwarded MAC address may now be the PF assigned MAC address and so we
need to make sure we approve it for this case.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Read phy eeprom A2h address only when optical diagnostics is supported.
Vasundhara Volam [Tue, 8 May 2018 07:18:40 +0000 (03:18 -0400)]
bnxt_en: Read phy eeprom A2h address only when optical diagnostics is supported.

For SFP+ modules, 0xA2 page is available only when Diagnostic Monitoring
Type [Address A0h, Byte 92] is implemented. Extend bnxt_get_module_info(),
to read optical diagnostics support at offset 92(0x5c) and set eeprom_len
length to ETH_MODULE_SFF_8436_LEN (to exclude A2 page), if dianostics is
not supported.

Also in bnxt_get_module_info(), module id is read from offset 0x5e which
is not correct. It was working by accident, as offset was not effective
without setting enables flag in the firmware request. SFP module id is
present at location 0. Fix this by removing the offset and read it
from location 0.

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Check unsupported speeds in bnxt_update_link() on PF only.
Michael Chan [Tue, 8 May 2018 07:18:39 +0000 (03:18 -0400)]
bnxt_en: Check unsupported speeds in bnxt_update_link() on PF only.

Only non-NPAR PFs need to actively check and manage unsupported link
speeds.  NPAR functions and VFs do not control the link speed and
should skip the unsupported speed detection logic, to avoid warning
messages from firmware rejecting the unsupported firmware calls.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobnxt_en: Fix firmware message delay loop regression.
Michael Chan [Tue, 8 May 2018 07:18:38 +0000 (03:18 -0400)]
bnxt_en: Fix firmware message delay loop regression.

A recent change to reduce delay granularity waiting for firmware
reponse has caused a regression.  With a tighter delay loop,
the driver may see the beginning part of the response faster.
The original 5 usec delay to wait for the rest of the message
is not long enough and some messages are detected as invalid.

Increase the maximum wait time from 5 usec to 20 usec.  Also, fix
the debug message that shows the total delay time for the response
when the message times out.  With the new logic, the delay time
is not fixed per iteration of the loop, so we define a macro to
show the total delay time.

Fixes: 9751e8e71487 ("bnxt_en: reduce timeout on initial HWRM calls")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet-next/hinic: add pci device ids for 25ge and 100ge card
Zhao Chen [Mon, 7 May 2018 13:21:57 +0000 (09:21 -0400)]
net-next/hinic: add pci device ids for 25ge and 100ge card

This patch adds PCI device IDs to support 25GE and 100GE card:

1. Add device id 0x0201 for HINIC 100GE dual port card.
2. Add device id 0x0200 for HINIC 25GE dual port card.
3. Macro of device id 0x1822 is modified for HINIC 25GE quad port card.

Signed-off-by: Zhao Chen <zhaochen6@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoflow_dissector: do not rely on implicit casts
Paolo Abeni [Mon, 7 May 2018 10:06:03 +0000 (12:06 +0200)]
flow_dissector: do not rely on implicit casts

This change fixes a couple of type mismatch reported by the sparse
tool, explicitly using the requested type for the offending arguments.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: rework basic flow dissection helper
Paolo Abeni [Fri, 4 May 2018 09:32:59 +0000 (11:32 +0200)]
net: core: rework basic flow dissection helper

When the core networking needs to detect the transport offset in a given
packet and parse it explicitly, a full-blown flow_keys struct is used for
storage.
This patch introduces a smaller keys store, rework the basic flow dissect
helper to use it, and apply this new helper where possible - namely in
skb_probe_transport_header(). The used flow dissector data structures
are renamed to match more closely the new role.

The above gives ~50% performance improvement in micro benchmarking around
skb_probe_transport_header() and ~30% around eth_get_headlen(), mostly due
to the smaller memset. Small, but measurable improvement is measured also
in macro benchmarking.

v1 -> v2: use the new helper in eth_get_headlen() and skb_get_poff(),
  as per DaveM suggestion

Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec...
David S. Miller [Tue, 8 May 2018 03:56:32 +0000 (23:56 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec-next

Minor conflict in ip_output.c, overlapping changes to
the body of an if() statement.

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'ipv6-misc'
David S. Miller [Tue, 8 May 2018 03:50:28 +0000 (23:50 -0400)]
Merge branch 'ipv6-misc'

Tariq Toukan says:

====================
net/ipv6 misc

This patchset contains two patches for net/ipv6.

Patch 1 is a trivial typo fix in documentation.
Patch 2 by Eran is a re-spin. It adds GRO support for IPv6 GRE tunnel,
this significantly improves performance in case GRO in native interface
is disabled.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ipv6/gre: Add GRO support
Eran Ben Elisha [Mon, 7 May 2018 07:45:27 +0000 (10:45 +0300)]
net: ipv6/gre: Add GRO support

Add GRO capability for IPv6 GRE tunnel and ip6erspan tap, via gro_cells
infrastructure.

Performance testing: 55% higher badwidth.
Measuring bandwidth of 1 thread IPv4 TCP traffic over IPv6 GRE tunnel
while GRO on the physical interface is disabled.
CPU: Intel Xeon E312xx (Sandy Bridge)
NIC: Mellanox Technologies MT27700 Family [ConnectX-4]
Before (GRO not working in tunnel) : 2.47 Gbits/sec
After  (GRO working in tunnel)     : 3.85 Gbits/sec

Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
CC: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: ipv6: Fix typo in ipv6_find_hdr() documentation
Tariq Toukan [Mon, 7 May 2018 07:45:26 +0000 (10:45 +0300)]
net: ipv6: Fix typo in ipv6_find_hdr() documentation

Fix 'an' into 'and', and use a comma instead of a period.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'qed-Add-support-for-new-multi-partitioning-modes'
David S. Miller [Tue, 8 May 2018 03:46:11 +0000 (23:46 -0400)]
Merge branch 'qed-Add-support-for-new-multi-partitioning-modes'

Sudarsana Reddy Kalluru says:

====================
qed*: Add support for new multi partitioning modes.

The patch series simplifies the multi function (MF) mode implementation of
qed/qede drivers, and adds support for new MF modes.

Please consider applying it to net-next branch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: Add support for Unified Fabric Port.
Sudarsana Reddy Kalluru [Sun, 6 May 2018 01:43:02 +0000 (18:43 -0700)]
qed: Add support for Unified Fabric Port.

This patch adds driver changes for supporting the Unified Fabric Port
(UFP). This is a new paritioning mode wherein MFW provides the set of
parameters to be used by the device such as traffic class, outer-vlan
tag value, priority type etc. Drivers receives this info via notifications
from mfw and configures the hardware accordingly.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: Add support for multi function mode with 802.1ad tagging.
Sudarsana Reddy Kalluru [Sun, 6 May 2018 01:43:01 +0000 (18:43 -0700)]
qed: Add support for multi function mode with 802.1ad tagging.

The patch adds support for new Multi function mode wherein the traffic
classification is done based on the 802.1ad tagging and the outer vlan tag
provided by the management firmware.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: Remove unused data member 'is_mf_default'.
Sudarsana Reddy Kalluru [Sun, 6 May 2018 01:43:00 +0000 (18:43 -0700)]
qed: Remove unused data member 'is_mf_default'.

The data member 'is_mf_default' is not used by the qed/qede drivers,
removing the same.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed*: Refactor mf_mode to consist of bits.
Sudarsana Reddy Kalluru [Sun, 6 May 2018 01:42:59 +0000 (18:42 -0700)]
qed*: Refactor mf_mode to consist of bits.

`mf_mode' field indicates the multi-partitioning mode the device is
configured to. This method doesn't scale very well, adding a new MF mode
requires going over all the existing conditions, and deciding whether those
are needed for the new mode or not.
The patch defines a set of bit-fields for modes which are derived according
to the mode info shared by the MFW and all the configuration would be made
according to those. To add a new mode, there would be a single place where
we'll need to go and choose which bits apply and which don't.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/9p: correct the variable name in v9fs_get_trans_by_name() comment
Sun Lianwen [Sat, 5 May 2018 03:29:16 +0000 (11:29 +0800)]
net/9p: correct the variable name in v9fs_get_trans_by_name() comment

The v9fs_get_trans_by_name(char *s) variable name is not "name" but "s".

Signed-off-by: Sun Lianwen <sunlw.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agovlan: correct the file path in vlan_dev_change_flags() comment
Sun Lianwen [Sat, 5 May 2018 01:08:18 +0000 (09:08 +0800)]
vlan: correct the file path in vlan_dev_change_flags() comment

The vlan_flags enum is defined in include/uapi/linux/if_vlan.h file.
not in include/linux/if_vlan.h file.

Signed-off-by: Sun Lianwen <sunlw.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
David S. Miller [Tue, 8 May 2018 03:35:08 +0000 (23:35 -0400)]
Merge git://git./linux/kernel/git/bpf/bpf-next

Minor conflict, a CHECK was placed into an if() statement
in net-next, whilst a newline was added to that CHECK
call in 'net'.  Thanks to Daniel for the merge resolution.

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoliquidio: support use of ethtool to set link speed of CN23XX-225 cards
Weilin Chang [Fri, 4 May 2018 18:07:19 +0000 (11:07 -0700)]
liquidio: support use of ethtool to set link speed of CN23XX-225 cards

Support setting the link speed of CN23XX-225 cards (which can do 25Gbps or
10Gbps) via ethtool_ops.set_link_ksettings.

Also fix the function assigned to ethtool_ops.get_link_ksettings to use the
new link_ksettings api completely (instead of partially via
ethtool_convert_legacy_u32_to_link_mode).

Signed-off-by: Weilin Chang <weilin.chang@cavium.com>
Acked-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch '3c59x-patches-and-the-removal-of-an-unused-function'
David S. Miller [Tue, 8 May 2018 03:25:25 +0000 (23:25 -0400)]
Merge branch '3c59x-patches-and-the-removal-of-an-unused-function'

Sebastian Andrzej Siewior says:

====================
3c59x patches and the removal of an unused function

The first patch removes an unused function. The goal of remaining three
patches is to get rid of the local_irq_save() usage in the driver which
benefits -RT.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: 3com: 3c59x: irq save variant of ISR
Anna-Maria Gleixner [Fri, 4 May 2018 15:17:49 +0000 (17:17 +0200)]
net: 3com: 3c59x: irq save variant of ISR

When vortex_boomerang_interrupt() is invoked from vortex_tx_timeout() or
poll_vortex() interrupts must be disabled. This detaches the interrupt
disable logic from locking which requires patching for PREEMPT_RT.

The advantage of avoiding spin_lock_irqsave() in the interrupt handler is
minimal, but converting it removes all the extra code for callers which
come not from interrupt context.

Cc: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: 3com: 3c59x: Pull locking out of ISR
Anna-Maria Gleixner [Fri, 4 May 2018 15:17:48 +0000 (17:17 +0200)]
net: 3com: 3c59x: Pull locking out of ISR

Locking is done in the same way in _vortex_interrupt() and
_boomerang_interrupt(). To prevent duplication, move the locking into the
calling vortex_boomerang_interrupt() function.

No functional change.

Cc: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: 3com: 3c59x: Move boomerang/vortex conditional into function
Anna-Maria Gleixner [Fri, 4 May 2018 15:17:47 +0000 (17:17 +0200)]
net: 3com: 3c59x: Move boomerang/vortex conditional into function

If vp->full_bus_master_tx is set, vp->full_bus_master_rx is set as well
(see vortex_probe1()). Therefore the conditionals for the decision if
boomerang or vortex ISR is executed have the same result. Instead of
repeating the explicit conditional execution of the boomerang/vortex ISR,
move it into an own function.

No functional change.

Cc: Steffen Klassert <klassert@mathematik.tu-chemnitz.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: u64_stats_sync: Remove functions without user
Anna-Maria Gleixner [Fri, 4 May 2018 15:17:46 +0000 (17:17 +0200)]
net: u64_stats_sync: Remove functions without user

Commit 67db3e4bfbc9 ("tcp: no longer hold ehash lock while calling
tcp_get_info()") removes the only users of u64_stats_update_end/begin_raw()
without removing the function in header file.

Remove no longer used functions.

Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoselftests: net: add udpgso* to TEST_GEN_FILES
Anders Roxell [Fri, 4 May 2018 09:17:25 +0000 (11:17 +0200)]
selftests: net: add udpgso* to TEST_GEN_FILES

The generated files udpgso* shouldn't be part of TEST_PROGS, they are
used by udpgso.sh and udpgsp_bench.sh. They should be added to the
TEST_GEN_FILES to get installed without being added to the main
run_kselftest.sh script.

Fixes: 3a687bef148d ("selftests: udp gso benchmark")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
David S. Miller [Mon, 7 May 2018 01:51:37 +0000 (21:51 -0400)]
Merge git://git./linux/kernel/git/pablo/nf-next

Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains Netfilter/IPVS updates for your net-next
tree, more relevant updates in this batch are:

1) Add Maglev support to IPVS. Moreover, store lastest server weight in
   IPVS since this is needed by maglev, patches from from Inju Song.

2) Preparation works to add iptables flowtable support, patches
   from Felix Fietkau.

3) Hand over flows back to conntrack slow path in case of TCP RST/FIN
   packet is seen via new teardown state, also from Felix.

4) Add support for extended netlink error reporting for nf_tables.

5) Support for larger timeouts that 23 days in nf_tables, patch from
   Florian Westphal.

6) Always set an upper limit to dynamic sets, also from Florian.

7) Allow number generator to make map lookups, from Laura Garcia.

8) Use hash_32() instead of opencode hashing in IPVS, from Vicent Bernat.

9) Extend ip6tables SRH match to support previous, next and last SID,
   from Ahmed Abdelsalam.

10) Move Passive OS fingerprint nf_osf.c, from Fernando Fernandez.

11) Expose nf_conntrack_max through ctnetlink, from Florent Fourcot.

12) Several housekeeping patches for xt_NFLOG, x_tables and ebtables,
   from Taehee Yoo.

13) Unify meta bridge with core nft_meta, then make nft_meta built-in.
   Make rt and exthdr built-in too, again from Florian.

14) Missing initialization of tbl->entries in IPVS, from Cong Wang.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetfilter: nft_dynset: fix timeout updates on 32bit
Florian Westphal [Fri, 27 Apr 2018 20:37:43 +0000 (22:37 +0200)]
netfilter: nft_dynset: fix timeout updates on 32bit

This must now use a 64bit jiffies value, else we set
a bogus timeout on 32bit.

Fixes: 8e1102d5a1596 ("netfilter: nf_tables: support timeouts larger than 23 days")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agonetfilter: ctnetlink: export nf_conntrack_max
Florent Fourcot [Sun, 6 May 2018 14:30:14 +0000 (16:30 +0200)]
netfilter: ctnetlink: export nf_conntrack_max

IPCTNL_MSG_CT_GET_STATS netlink command allow to monitor current number
of conntrack entries. However, if one wants to compare it with the
maximum (and detect exhaustion), the only solution is currently to read
sysctl value.

This patch add nf_conntrack_max value in netlink message, and simplify
monitoring for application built on netlink API.

Signed-off-by: Florent Fourcot <florent.fourcot@wifirst.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agonetfilter: extract Passive OS fingerprint infrastructure from xt_osf
Fernando Fernandez Mancera [Thu, 3 May 2018 12:05:40 +0000 (14:05 +0200)]
netfilter: extract Passive OS fingerprint infrastructure from xt_osf

Add nf_osf_ttl() and nf_osf_match() into nf_osf.c to prepare for
nf_tables support.

Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agonetfilter: nf_tables: Provide NFT_{RT,CT}_MAX for userspace
Phil Sutter [Fri, 27 Apr 2018 10:47:01 +0000 (12:47 +0200)]
netfilter: nf_tables: Provide NFT_{RT,CT}_MAX for userspace

These macros allow conveniently declaring arrays which use NFT_{RT,CT}_*
values as indexes.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agonetfilter: nf_nat: remove unused ct arg from lookup functions
Florian Westphal [Thu, 26 Apr 2018 15:42:15 +0000 (17:42 +0200)]
netfilter: nf_nat: remove unused ct arg from lookup functions

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agonetfilter: ip6t_srh: extend SRH matching for previous, next and last SID
Ahmed Abdelsalam [Wed, 25 Apr 2018 10:30:24 +0000 (05:30 -0500)]
netfilter: ip6t_srh: extend SRH matching for previous, next and last SID

IPv6 Segment Routing Header (SRH) contains a list of SIDs to be crossed
by SR encapsulated packet. Each SID is encoded as an IPv6 prefix.

When a Firewall receives an SR encapsulated packet, it should be able
to identify which node previously processed the packet (previous SID),
which node is going to process the packet next (next SID), and which
node is the last to process the packet (last SID) which represent the
final destination of the packet in case of inline SR mode.

An example use-case of using these features could be SID list that
includes two firewalls. When the second firewall receives a packet,
it can check whether the packet has been processed by the first firewall
or not. Based on that check, it decides to apply all rules, apply just
subset of the rules, or totally skip all rules and forward the packet to
the next SID.

This patch extends SRH match to support matching previous SID, next SID,
and last SID.

Signed-off-by: Ahmed Abdelsalam <amsalam20@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agonetfilter: nft_numgen: enable hashing of one element
Laura Garcia Liebana [Mon, 23 Apr 2018 10:48:07 +0000 (12:48 +0200)]
netfilter: nft_numgen: enable hashing of one element

The modulus in the hash function was limited to > 1 as initially
there was no sense to create a hashing of just one element.

Nevertheless, there are certain cases specially for load balancing
where this case needs to be addressed.

This patch fixes the following error.

Error: Could not process rule: Numerical result out of range
add rule ip nftlb lb01 dnat to jhash ip saddr mod 1 map { 0: 192.168.0.10 }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The solution comes to force the hash to 0 when the modulus is 1.

Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
6 years agonetfilter: nft_numgen: add map lookups for numgen statements
Laura Garcia Liebana [Sun, 22 Apr 2018 09:03:23 +0000 (11:03 +0200)]
netfilter: nft_numgen: add map lookups for numgen statements

This patch includes a new attribute in the numgen structure to allow
the lookup of an element based on the number generator as a key.

For this purpose, different ops have been included to extend the
current numgen inc functions.

Currently, only supported for numgen incremental operations, but
it will be supported for random in a follow-up patch.

Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agonet/ipv6: rename rt6_next to fib6_next
David Ahern [Fri, 4 May 2018 20:54:24 +0000 (13:54 -0700)]
net/ipv6: rename rt6_next to fib6_next

This slipped through the cracks in the followup set to the fib6_info flip.
Rename rt6_next to fib6_next.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobpf, xskmap: fix crash in xsk_map_alloc error path handling
Daniel Borkmann [Fri, 4 May 2018 14:27:53 +0000 (16:27 +0200)]
bpf, xskmap: fix crash in xsk_map_alloc error path handling

If bpf_map_precharge_memlock() did not fail, then we set err to zero.
However, any subsequent failure from either alloc_percpu() or the
bpf_map_area_alloc() will return ERR_PTR(0) which in find_and_alloc_map()
will cause NULL pointer deref.

In devmap we have the convention that we return -EINVAL on page count
overflow, so keep the same logic here and just set err to -ENOMEM
after successful bpf_map_precharge_memlock().

Fixes: fbfc504a24f5 ("bpf: introduce new bpf AF_XDP map type BPF_MAP_TYPE_XSKMAP")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Björn Töpel <bjorn.topel@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
6 years agoMerge branch 'bpf-event-output-offload'
Daniel Borkmann [Fri, 4 May 2018 21:41:05 +0000 (23:41 +0200)]
Merge branch 'bpf-event-output-offload'

Jakub Kicinski says:

====================
This series centres on NFP offload of bpf_event_output().  The
first patch allows perf event arrays to be used by offloaded
programs.  Next patch makes the nfp driver keep track of such
arrays to be able to filter FW events referring to maps.
Perf event arrays are not device bound.  Having driver
reimplement and manage the perf array seems brittle and unnecessary.

Patch 4 moves slightly the verifier step which replaces map fds
with map pointers.  This is useful for nfp JIT since we can then
easily replace host pointers with NFP table ids (patch 6).  This
allows us to lift the limitation on map helpers having to be used
with the same map pointer on all paths.  Second use of replacing
fds with real host map pointers is that we can use the host map
pointer as a key for FW events in perf event array offload.

Patch 5 adds perf event output offload support for the NFP.

There are some differences between bpf_event_output() offloaded
and non-offloaded version.  The FW messages which carry events
may get dropped and reordered relatively easily.  The return codes
from the helper are also not guaranteed to match the host.  Users
are warned about some of those discrepancies with a one time
warning message to kernel logs.

bpftool gains an ability to dump perf ring events in a very simple
format.  This was very useful for testing and simple debug, maybe
it will be useful to others?

Last patch is a trivial comment fix.
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agobpf: fix references to free_bpf_prog_info() in comments
Jakub Kicinski [Fri, 4 May 2018 01:37:17 +0000 (18:37 -0700)]
bpf: fix references to free_bpf_prog_info() in comments

Comments in the verifier refer to free_bpf_prog_info() which
seems to have never existed in tree.  Replace it with
free_used_maps().

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agotools: bpftool: add simple perf event output reader
Jakub Kicinski [Fri, 4 May 2018 01:37:16 +0000 (18:37 -0700)]
tools: bpftool: add simple perf event output reader

Users of BPF sooner or later discover perf_event_output() helpers
and BPF_MAP_TYPE_PERF_EVENT_ARRAY.  Dumping this array type is
not possible, however, we can add simple reading of perf events.
Create a new event_pipe subcommand for maps, this sub command
will only work with BPF_MAP_TYPE_PERF_EVENT_ARRAY maps.

Parts of the code from samples/bpf/trace_output_user.c.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agotools: bpftool: move get_possible_cpus() to common code
Jakub Kicinski [Fri, 4 May 2018 01:37:15 +0000 (18:37 -0700)]
tools: bpftool: move get_possible_cpus() to common code

Move the get_possible_cpus() function to shared code.  No functional
changes.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agotools: bpftool: fold hex keyword in command help
Jakub Kicinski [Fri, 4 May 2018 01:37:14 +0000 (18:37 -0700)]
tools: bpftool: fold hex keyword in command help

Instead of spelling [hex] BYTES everywhere use DATA as keyword
for generalized value.  This will help us keep the messages
concise when longer command are added in the future.  It will
also be useful once BTF support comes.  We will only have to
change the definition of DATA.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agonfp: bpf: rewrite map pointers with NFP TIDs
Jakub Kicinski [Fri, 4 May 2018 01:37:13 +0000 (18:37 -0700)]
nfp: bpf: rewrite map pointers with NFP TIDs

Kernel will now replace map fds with actual pointer before
calling the offload prepare.  We can identify those pointers
and replace them with NFP table IDs instead of loading the
table ID in code generated for CALL instruction.

This allows us to support having the same CALL being used with
different maps.

Since we don't want to change the FW ABI we still need to
move the TID from R1 to portion of R0 before the jump.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agonfp: bpf: perf event output helpers support
Jakub Kicinski [Fri, 4 May 2018 01:37:12 +0000 (18:37 -0700)]
nfp: bpf: perf event output helpers support

Add support for the perf_event_output family of helpers.

The implementation on the NFP will not match the host code exactly.
The state of the host map and rings is unknown to the device, hence
device can't return errors when rings are not installed.  The device
simply packs the data into a firmware notification message and sends
it over to the host, returning success to the program.

There is no notion of a host CPU on the device when packets are being
processed.  Device will only offload programs which set BPF_F_CURRENT_CPU.
Still, if map index doesn't match CPU no error will be returned (see
above).

Dropped/lost firmware notification messages will not cause "lost
events" event on the perf ring, they are only visible via device
error counters.

Firmware notification messages may also get reordered in respect
to the packets which caused their generation.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agobpf: replace map pointer loads before calling into offloads
Jakub Kicinski [Fri, 4 May 2018 01:37:11 +0000 (18:37 -0700)]
bpf: replace map pointer loads before calling into offloads

Offloads may find host map pointers more useful than map fds.
Map pointers can be used to identify the map, while fds are
only valid within the context of loading process.

Jump to skip_full_check on error in case verifier log overflow
has to be handled (replace_map_fd_with_map_ptr() prints to the
log, driver prep may do that too in the future).

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agobpf: export bpf_event_output()
Jakub Kicinski [Fri, 4 May 2018 01:37:10 +0000 (18:37 -0700)]
bpf: export bpf_event_output()

bpf_event_output() is useful for offloads to add events to BPF
event rings, export it.  Note that export is placed near the stub
since tracing is optional and kernel/bpf/core.c is always going
to be built.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agonfp: bpf: record offload neutral maps in the driver
Jakub Kicinski [Fri, 4 May 2018 01:37:09 +0000 (18:37 -0700)]
nfp: bpf: record offload neutral maps in the driver

For asynchronous events originating from the device, like perf event
output, we need to be able to make sure that objects being referred
to by the FW message are valid on the host.  FW events can get queued
and reordered.  Even if we had a FW message "barrier" we should still
protect ourselves from bogus FW output.

Add a reverse-mapping hash table and record in it all raw map pointers
FW may refer to.  Only record neutral maps, i.e. perf event arrays.
These are currently the only objects FW can refer to.  Use RCU protection
on the read side, update side is under RTNL.

Since program vs map destruction order is slightly painful for offload
simply take an extra reference on all the recorded maps to make sure
they don't disappear.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agobpf: offload: allow offloaded programs to use perf event arrays
Jakub Kicinski [Fri, 4 May 2018 01:37:08 +0000 (18:37 -0700)]
bpf: offload: allow offloaded programs to use perf event arrays

BPF_MAP_TYPE_PERF_EVENT_ARRAY is special as far as offload goes.
The map only holds glue to perf ring, not actual data.  Allow
non-offloaded perf event arrays to be used in offloaded programs.
Offload driver can extract the events from HW and put them in
the map for user space to retrieve.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agoMerge branch 'bpf-subprog-mgmt-cleanup'
Daniel Borkmann [Fri, 4 May 2018 09:58:38 +0000 (11:58 +0200)]
Merge branch 'bpf-subprog-mgmt-cleanup'

Jiong Wang says:

====================
This patch set clean up some code logic related with managing subprog
information.

Part of the set are inspried by Edwin's code in his RFC:

  "bpf/verifier: subprog/func_call simplifications"

but with clearer separation so it could be easier to review.

  - Path 1 unifies main prog and subprogs. All of them are registered in
    env->subprog_starts.

  - After patch 1, it is clear that subprog_starts and subprog_stack_depth
    could be merged as both of them now have main and subprog unified.
    Patch 2 therefore does the merge, all subprog information are centred
    at bpf_subprog_info.

  - Patch 3 goes further to introduce a new fake "exit" subprog which
    serves as an ending marker to the subprog list. We could then turn the
    following code snippets across verifier:

       if (env->subprog_cnt == cur_subprog + 1)
               subprog_end = insn_cnt;
       else
               subprog_end = env->subprog_info[cur_subprog + 1].start;

    into:
       subprog_end = env->subprog_info[cur_subprog + 1].start;

There is no functional change by this patch set.
No bpf selftest (both non-jit and jit) regression found after this set.

v2:
  - fixed adjust_subprog_starts to also update fake "exit" subprog start.
  - for John's suggestion on renaming subprog to prog, I could work on
    a follow-up patch if it is recognized as worth the change.
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
6 years agonet/mlx5: fix spelling mistake: "modfiy" -> "modify"
Colin Ian King [Thu, 3 May 2018 13:35:03 +0000 (14:35 +0100)]
net/mlx5: fix spelling mistake: "modfiy" -> "modify"

Trivial fix to spelling mistake in netdev_warn warning message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: Cleanup unused field in Work Queue parameters
Tariq Toukan [Sun, 18 Feb 2018 08:35:25 +0000 (10:35 +0200)]
net/mlx5: Cleanup unused field in Work Queue parameters

Remove the 'linear' field from struct mlx5_wq_param.
It is redundant, set but never read.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: Fix dump_command mailbox length printed
Moshe Shemesh [Sun, 8 Apr 2018 11:16:48 +0000 (14:16 +0300)]
net/mlx5: Fix dump_command mailbox length printed

Dump command mailbox length printed was correct only if data_only flag
was set. For the case that data_only flag was clear the offset to stop
printing at was wrong and so the buffer printed was too short.
Changed the print loop to stop according to number of buffers in
mailbox.

Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: Refactor num of blocks in mailbox calculation
Moshe Shemesh [Sat, 4 Nov 2017 05:18:28 +0000 (07:18 +0200)]
net/mlx5: Refactor num of blocks in mailbox calculation

Get the logic that calculates the number of blocks in a command mailbox
into a dedicated function.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: Decrease level of prints about non-existent MKEY
Leon Romanovsky [Tue, 3 Apr 2018 11:03:52 +0000 (14:03 +0300)]
net/mlx5: Decrease level of prints about non-existent MKEY

User-controlled application can cause multiple prints as below to flood
dmesg. Since knowledge of failed MKey release is important for debug,
let's decrease its level to debug.

mlx5_core 0000:00:04.0: mlx5_core_destroy_mkey:127:(pid 2352): failed
radix tree delete of mkey 0x1ed700

Reported-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx4_en: optimizes get_fixed_ipv6_csum()
Eric Dumazet [Thu, 19 Apr 2018 15:49:29 +0000 (08:49 -0700)]
net/mlx4_en: optimizes get_fixed_ipv6_csum()

While trying to support CHECKSUM_COMPLETE for IPV6 fragments,
I had to experiments various hacks in get_fixed_ipv6_csum().
I must admit I could not find how to implement this :/

However, get_fixed_ipv6_csum() does a lot of redundant operations,
calling csum_partial() twice.

First csum_partial() computes the checksum of saddr and daddr,
put in @csum_pseudo_hdr. Undone later in the second csum_partial()
computed on whole ipv6 header.

Then nexthdr is added once, added a second time, then substracted.

payload_len is added once, then substracted.

Really all this can be reduced to two add_csum(), to add back 6 bytes
that were removed by mlx4 when providing hw_checksum in RX descriptor.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'smc-splice-implementation'
David S. Miller [Fri, 4 May 2018 15:45:12 +0000 (11:45 -0400)]
Merge branch 'smc-splice-implementation'

Ursula Braun says:

====================
net/smc: splice implementation

Stefan comes up with an smc implementation for splice(). The first
three patches are preparational patches, the 4th patch implements
splice().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosmc: add support for splice()
Stefan Raspl [Thu, 3 May 2018 16:12:39 +0000 (18:12 +0200)]
smc: add support for splice()

Provide an implementation for splice() when we are using SMC. See
smc_splice_read() for further details.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com><
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosmc: allocate RMBs as compound pages
Stefan Raspl [Thu, 3 May 2018 16:12:38 +0000 (18:12 +0200)]
smc: allocate RMBs as compound pages

Preparatory work for splice() support.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com><
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosmc: make smc_rx_wait_data() generic
Stefan Raspl [Thu, 3 May 2018 16:12:37 +0000 (18:12 +0200)]
smc: make smc_rx_wait_data() generic

Turn smc_rx_wait_data into a generic function that can be used at various
instances to wait on traffic to complete with varying criteria.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com><
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosmc: simplify abort logic
Stefan Raspl [Thu, 3 May 2018 16:12:36 +0000 (18:12 +0200)]
smc: simplify abort logic

Some of the conditions to exit recv() are common in two pathes - cleaning up
code by moving the check up so we have it only once.

Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.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 [Fri, 4 May 2018 13:58:56 +0000 (09:58 -0400)]
Merge git://git./linux/kernel/git/davem/net

Overlapping changes in selftests Makefile.

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'sh_eth-complain-on-access-to-unimplemented-TSU-registers'
David S. Miller [Fri, 4 May 2018 13:11:50 +0000 (09:11 -0400)]
Merge branch 'sh_eth-complain-on-access-to-unimplemented-TSU-registers'

Sergei Shtylyov says:

====================
sh_eth: complain on access to unimplemented TSU registers

Here's a set of 2 patches against DaveM's 'net-next.git' repo. The 1st patch
routes TSU_POST<n> register accesses thru sh_eth_tsu_{read|write}() and the 2nd
added WARN_ON() unimplemented register to those functions. I'm going to deal with
TSU_ADR{H|L}<n> registers in a later series...
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosh_eth: WARN_ON() access to unimplemented TSU register
Sergei Shtylyov [Wed, 2 May 2018 19:55:52 +0000 (22:55 +0300)]
sh_eth: WARN_ON() access to unimplemented TSU register

Commit 3365711df024 ("sh_eth: WARN on access to a register not implemented
in a particular chip") added  WARN_ON() to sh_eth_{read|write}() but not
to sh_eth_tsu_{read|write}(). Now that we've routed almost all TSU register
accesses  (except TSU_ADR{H|L}<n> -- which are special) thru the latter
pair of accessors, it makes sense to check for the unimplemented TSU
registers as well...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosh_eth: use TSU register accessors for TSU_POST<n>
Sergei Shtylyov [Wed, 2 May 2018 19:54:48 +0000 (22:54 +0300)]
sh_eth: use TSU register accessors for TSU_POST<n>

There's no particularly good reason TSU_POST<n> registers get accessed
circumventing sh_eth_tsu_{read|write}() -- start using those, removing
(badly named) sh_eth_tsu_get_post_reg_offset(),  while at it...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobpf: add faked "ending" subprog
Jiong Wang [Wed, 2 May 2018 20:17:19 +0000 (16:17 -0400)]
bpf: add faked "ending" subprog

There are quite a few code snippet like the following in verifier:

       subprog_start = 0;
       if (env->subprog_cnt == cur_subprog + 1)
               subprog_end = insn_cnt;
       else
               subprog_end = env->subprog_info[cur_subprog + 1].start;

The reason is there is no marker in subprog_info array to tell the end of
it.

We could resolve this issue by introducing a faked "ending" subprog.
The special "ending" subprog is with "insn_cnt" as start offset, so it is
serving as the end mark whenever we iterate over all subprogs.

Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agobpf: centre subprog information fields
Jiong Wang [Wed, 2 May 2018 20:17:18 +0000 (16:17 -0400)]
bpf: centre subprog information fields

It is better to centre all subprog information fields into one structure.
This structure could later serve as function node in call graph.

Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agobpf: unify main prog and subprog
Jiong Wang [Wed, 2 May 2018 20:17:17 +0000 (16:17 -0400)]
bpf: unify main prog and subprog

Currently, verifier treat main prog and subprog differently. All subprogs
detected are kept in env->subprog_starts while main prog is not kept there.
Instead, main prog is implicitly defined as the prog start at 0.

There is actually no difference between main prog and subprog, it is better
to unify them, and register all progs detected into env->subprog_starts.

This could also help simplifying some code logic.

Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agoxfrm: use a dedicated slab cache for struct xfrm_state
Mathias Krause [Thu, 3 May 2018 08:55:07 +0000 (10:55 +0200)]
xfrm: use a dedicated slab cache for struct xfrm_state

struct xfrm_state is rather large (768 bytes here) and therefore wastes
quite a lot of memory as it falls into the kmalloc-1024 slab cache,
leaving 256 bytes of unused memory per XFRM state object -- a net waste
of 25%.

Using a dedicated slab cache for struct xfrm_state reduces the level of
internal fragmentation to a minimum.

On my configuration SLUB chooses to create a slab cache covering 4
pages holding 21 objects, resulting in an average memory waste of ~13
bytes per object -- a net waste of only 1.6%.

In my tests this led to memory savings of roughly 2.3MB for 10k XFRM
states.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
6 years agoMerge tag 'linux-kselftest-4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 4 May 2018 05:26:51 +0000 (19:26 -1000)]
Merge tag 'linux-kselftest-4.17-rc4' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "This Kselftest update for 4.17-rc4 consists of a fix for a syntax
  error in the script that runs selftests. Mathieu Desnoyers found this
  bug in the script on systems running GNU Make 3.8 or older"

* tag 'linux-kselftest-4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: Fix lib.mk run_tests target shell script

6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 4 May 2018 04:57:03 +0000 (18:57 -1000)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Various sockmap fixes from John Fastabend (pinned map handling,
    blocking in recvmsg, double page put, error handling during redirect
    failures, etc.)

 2) Fix dead code handling in x86-64 JIT, from Gianluca Borello.

 3) Missing device put in RDS IB code, from Dag Moxnes.

 4) Don't process fast open during repair mode in TCP< from Yuchung
    Cheng.

 5) Move address/port comparison fixes in SCTP, from Xin Long.

 6) Handle add a bond slave's master into a bridge properly, from
    Hangbin Liu.

 7) IPv6 multipath code can operate on unitialized memory due to an
    assumption that the icmp header is in the linear SKB area. Fix from
    Eric Dumazet.

 8) Don't invoke do_tcp_sendpages() recursively via TLS, from Dave
    Watson.

9) Fix memory leaks in x86-64 JIT, from Daniel Borkmann.

10) RDS leaks kernel memory to userspace, from Eric Dumazet.

11) DCCP can invoke a tasklet on a freed socket, take a refcount. Also
    from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (78 commits)
  dccp: fix tasklet usage
  smc: fix sendpage() call
  net/smc: handle unregistered buffers
  net/smc: call consolidation
  qed: fix spelling mistake: "offloded" -> "offloaded"
  net/mlx5e: fix spelling mistake: "loobpack" -> "loopback"
  tcp: restore autocorking
  rds: do not leak kernel memory to user land
  qmi_wwan: do not steal interfaces from class drivers
  ipv4: fix fnhe usage by non-cached routes
  bpf: sockmap, fix error handling in redirect failures
  bpf: sockmap, zero sg_size on error when buffer is released
  bpf: sockmap, fix scatterlist update on error path in send with apply
  net_sched: fq: take care of throttled flows before reuse
  ipv6: Revert "ipv6: Allow non-gateway ECMP for IPv6"
  bpf, x64: fix memleak when not converging on calls
  bpf, x64: fix memleak when not converging after image
  net/smc: restrict non-blocking connect finish
  8139too: Use disable_irq_nosync() in rtl8139_poll_controller()
  sctp: fix the issue that the cookie-ack with auth can't get processed
  ...

6 years agoMerge branch 'parisc-4.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Fri, 4 May 2018 04:31:19 +0000 (18:31 -1000)]
Merge branch 'parisc-4.17-4' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "Fix two section mismatches, convert to read_persistent_clock64(), add
  further documentation regarding the HPMC crash handler and make
  bzImage the default build target"

* 'parisc-4.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix section mismatches
  parisc: drivers.c: Fix section mismatches
  parisc: time: Convert read_persistent_clock() to read_persistent_clock64()
  parisc: Document rules regarding checksum of HPMC handler
  parisc: Make bzImage default build target

6 years agoMerge branch 'move-ld_abs-to-native-BPF'
Alexei Starovoitov [Thu, 3 May 2018 23:49:21 +0000 (16:49 -0700)]
Merge branch 'move-ld_abs-to-native-BPF'

Daniel Borkmann says:

====================
This set simplifies BPF JITs significantly by moving ld_abs/ld_ind
to native BPF, for details see individual patches. Main rationale
is in patch 'implement ld_abs/ld_ind in native bpf'. Thanks!

v1 -> v2:
  - Added missing seen_lds_abs in LDX_MSH and use X = A
    initially due to being preserved on func call.
  - Added a large batch of cBPF tests into test_bpf.
  - Added x32 removal of LD_ABS/LD_IND, so all JITs are
    covered.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>