linux
5 years agoip_tunnel: Add ip tunnel dst_cache in ip_md_tunnel_xmit
wenxu [Tue, 22 Jan 2019 10:39:49 +0000 (18:39 +0800)]
ip_tunnel: Add ip tunnel dst_cache in ip_md_tunnel_xmit

Add ip tunnel dst cache in ip_md_tunnel_xmit to make more
efficient for the route lookup.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agolan743x: Provide Read/Write Access to on chip OTP
Bryan Whitehead [Wed, 23 Jan 2019 20:18:47 +0000 (15:18 -0500)]
lan743x: Provide Read/Write Access to on chip OTP

The LAN743x includes on chip One-Time-Programmable (OTP) memory.

This patch extends the ethtool EEPROM read/write interface to
access OTP memory space.

The currently existing interface is limited, as it does not
allow OTP read, and OTP writes are restricted to
offset==0, length==512, and data[0]==0xF3.

This patch removes these restrictions and adds a private flag
called OTP_ACCESS, which is used to switch between EEPROM, and
OTP modes.

The private flag OTP_ACCESS is configurable through the
  ethtool --set-priv-flags command.
And visible through the
  ethtool --show-priv-flags command.

By default OTP_ACCESS is false, and there for previously existing
EEPROM commands will work exactly the same. However now access to
OTP requires one extra step of setting OTP_ACCESS to true. This
flag controls the read, write, and length reporting, functions
of ethtool.

EEPROM presence is not checked when setting or clearing this flag.
If the EEPROM is not present, the user, as before, will need to
diagnose that using existing read and write function of ethtool,
while OTP_ACCESS is false.

Updates for V2:
Added comments as to why this patch is needed.
Added comments explaining that EEPROM presence is not check
  when setting or clearing the OTP_ACCESS flag.
Added length checking to all otp/eeprom read/write functions.

Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'hns3-next'
David S. Miller [Sat, 26 Jan 2019 17:33:31 +0000 (09:33 -0800)]
Merge branch 'hns3-next'

Huazhong Tan says:

====================
code optimizations & bugfixes for HNS3 driver

This patchset includes bugfixes and code optimizations for the HNS3
ethernet controller driver
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: don't allow vf to enable promisc mode
Jian Shen [Sat, 26 Jan 2019 16:49:21 +0000 (00:49 +0800)]
net: hns3: don't allow vf to enable promisc mode

VF can receive packets of other functions when in promisc
mode. It's not safe, so don't allow VF to enable promisc
mode.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: add initialization for nic state
Jian Shen [Sat, 26 Jan 2019 16:49:20 +0000 (00:49 +0800)]
net: hns3: add initialization for nic state

This patch adds initialization for nic state, sets flag
HNS3_NIC_STATE_DOWN when initialize, clears it before
vectors and napi being enabled in the hns3_nic_net_up(),
and sets it back in the error handler.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: add 8 BD limit for tx flow
Peng Li [Sat, 26 Jan 2019 16:49:19 +0000 (00:49 +0800)]
net: hns3: add 8 BD limit for tx flow

A single transmit packet can span up to 8 descriptors according
to the HW limit. If a skb has more than 8 frags, driver uses
skb_copy to get a new skb which has less frags.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: call hns3_nic_set_real_num_queue with netdev down
Yunsheng Lin [Sat, 26 Jan 2019 16:49:18 +0000 (00:49 +0800)]
net: hns3: call hns3_nic_set_real_num_queue with netdev down

hns3_client_setup_tc in enet is for updating TC configuration to
stack, and hclge_setup_tc in hclge_dcb is mainly for setting the
configuration to hardware.

This patch removes the hns3_nic_set_real_num_queue from
hns3_setup_tc in enet, and call hclge_client_setup_tc to update
TC configuration to stack with netdev down, because the netdev
down operation is done in hclge_dcb now.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: remove dcb_ops->map_update in hclge_dcb
Yunsheng Lin [Sat, 26 Jan 2019 16:49:17 +0000 (00:49 +0800)]
net: hns3: remove dcb_ops->map_update in hclge_dcb

After doing down/uninit/init/up in hclge_dcb, it is not necessary
to call dcb_ops->map_update in enet, so hclge_map_update can be
called directly in hclge_dcb.

This is for preparing to call hns3_nic_set_real_num_queue with
netdev down when user changes mqprio configuration.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: do reinitialization while mqprio configuration changed
Yunsheng Lin [Sat, 26 Jan 2019 16:49:16 +0000 (00:49 +0800)]
net: hns3: do reinitialization while mqprio configuration changed

When user changes the mqprio configuration, enet need to be
uninited and inited besides down'ed and up'ed, because the queue
num may change when the TC num changes.

Also, it is more suitable to do the down/unint/init/up operation
in hclge module using hclge_notify_client, because this config
change may affect PF and its VF.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: After setting the loopback, add the status of getting MAC
liuzhongzhu [Sat, 26 Jan 2019 16:49:15 +0000 (00:49 +0800)]
net: hns3: After setting the loopback, add the status of getting MAC

After setting the serdes loopback, you need to determine
the status of the MAC negotiation. If a status exception
is obtained after 200ms, a timeout error is returned.

Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: fix broadcast promisc issue for revision 0x20
Jian Shen [Sat, 26 Jan 2019 16:49:14 +0000 (00:49 +0800)]
net: hns3: fix broadcast promisc issue for revision 0x20

For revision 0x20, vlan filter is always bypassed when enable
broadcast promisc mode. In this case, broadcast packets with
any vlan id can be accpeted. We should disable broadcast promisc
mode until user want enable it.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: fix return value handle issue for hclge_set_loopback()
Jian Shen [Sat, 26 Jan 2019 16:49:13 +0000 (00:49 +0800)]
net: hns3: fix return value handle issue for hclge_set_loopback()

In current code, it always return 0, even loopback mode setting failed.
It's incorrect. This patch fixes return value handle for loopback test.

Fixes: 0f29fc23b21d ("net: hns3: Fix for loopback selftest failed problem")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: add error handling in hclge_ieee_setets
Yunsheng Lin [Sat, 26 Jan 2019 16:49:12 +0000 (00:49 +0800)]
net: hns3: add error handling in hclge_ieee_setets

Currently hclge_ieee_setets returns error directly when there is
error, which may cause netdev not up problem.

This patch adds some error handling when setting ETS configuration
fails.

Fixes: cacde272dd00 ("net: hns3: Add hclge_dcb module for the support of DCB feature")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: clear pci private data when unload hns3 driver
Jian Shen [Sat, 26 Jan 2019 16:49:11 +0000 (00:49 +0800)]
net: hns3: clear pci private data when unload hns3 driver

When unload hns3 driver, we should clear the pci private data.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: don't update packet statistics for packets dropped by hardware
Jian Shen [Sat, 26 Jan 2019 16:49:10 +0000 (00:49 +0800)]
net: hns3: don't update packet statistics for packets dropped by hardware

Packet statistics for netdev should not include the packets dropped
by hardware.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'r8169-add-EEE-support-for-RTL8168f'
David S. Miller [Sat, 26 Jan 2019 17:19:39 +0000 (09:19 -0800)]
Merge branch 'r8169-add-EEE-support-for-RTL8168f'

Heiner Kallweit says:

====================
r8169: add EEE support for RTL8168f

This series adds EEE support for RTL8168f. Again first patch adds the
support, and second patch enables EEE per default.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8169: enable EEE per default on RTL8168f
Heiner Kallweit [Sat, 26 Jan 2019 09:36:35 +0000 (10:36 +0100)]
r8169: enable EEE per default on RTL8168f

Enable EEE per default on RTL8168f.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8169: add EEE support for RTL8168f
Heiner Kallweit [Sat, 26 Jan 2019 09:35:30 +0000 (10:35 +0100)]
r8169: add EEE support for RTL8168f

Add EEE support for RTL8168f to the recently added EEE handling
framework in the driver. This patch leaves the chip defaults, means
EEE typically is disabled initially and it's up to the user to enable
it via ethtool.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoDocumentation: net: phy: switch documentation to rst format
Heiner Kallweit [Sat, 26 Jan 2019 10:25:37 +0000 (11:25 +0100)]
Documentation: net: phy: switch documentation to rst format

Switch phylib documentation to rst format.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agotcp: allow zerocopy with fastopen
Willem de Bruijn [Fri, 25 Jan 2019 16:17:23 +0000 (11:17 -0500)]
tcp: allow zerocopy with fastopen

Accept MSG_ZEROCOPY in all the TCP states that allow sendmsg. Remove
the explicit check for ESTABLISHED and CLOSE_WAIT states.

This requires correctly handling zerocopy state (uarg, sk_zckey) in
all paths reachable from other TCP states. Such as the EPIPE case
in sk_stream_wait_connect, which a sendmsg() in incorrect state will
now hit. Most paths are already safe.

Only extension needed is for TCP Fastopen active open. This can build
an skb with data in tcp_send_syn_data. Pass the uarg along with other
fastopen state, so that this skb also generates a zerocopy
notification on release.

Tested with active and passive tcp fastopen packetdrill scripts at
https://github.com/wdebruij/packetdrill/commit/1747eef03d25a2404e8132817d0f1244fd6f129d

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoptp: fix debugfs_simple_attr.cocci warnings
YueHaibing [Fri, 25 Jan 2019 02:28:59 +0000 (02:28 +0000)]
ptp: fix debugfs_simple_attr.cocci warnings

Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
for debugfs files.

Semantic patch information:
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().

Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'r8169-add-EEE-support-for-RTL8168g+'
David S. Miller [Sat, 26 Jan 2019 06:02:52 +0000 (22:02 -0800)]
Merge branch 'r8169-add-EEE-support-for-RTL8168g+'

Heiner Kallweit says:

====================
r8169: add EEE support for RTL8168g+

This series adds general EEE support to be used with ethtool.
In addition it implements EEE for chip versions from RTL8168g.
The first patch leaves the default chip settings and the
second enables EEE per default. This allows us to revert patch 2
w/o removing EEE support completely if we should face issues with
EEE on particular chip versions.

Unfortunately Realtek decided not to use the standard EEE MMD
registers but to use proprietary registers. Therefore we can't
use phylib functions like phy_ethtool_set_eee and have to
reimplement the functionality.

Tested on a system with RTL8168g (chip version 40).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8169: enable EEE per default on chip versions from RTL8168g
Heiner Kallweit [Fri, 25 Jan 2019 19:39:42 +0000 (20:39 +0100)]
r8169: enable EEE per default on chip versions from RTL8168g

Enable EEE per default on chip versions from RTL8168g.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8169: add general EEE support for chip versions from RTL8168g
Heiner Kallweit [Fri, 25 Jan 2019 19:38:38 +0000 (20:38 +0100)]
r8169: add general EEE support for chip versions from RTL8168g

This patch adds the general framework to deal with EEE in this driver
plus EEE support for chip versions from RTL8168g. We don't touch the
default chip settings, therefore EEE will usually be disabled and it's
up to the user to enable it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'ipv6-defrag-rbtree'
David S. Miller [Sat, 26 Jan 2019 05:37:11 +0000 (21:37 -0800)]
Merge branch 'ipv6-defrag-rbtree'

Peter Oskolkov says:

====================
net: IP defrag: use rbtrees in IPv6 defragmentation

Currently, IPv6 defragmentation code drops non-last fragments that
are smaller than 1280 bytes: see
commit 0ed4229b08c1 ("ipv6: defrag: drop non-last frags smaller than min mtu")

This behavior is not specified in IPv6 RFCs and appears to break compatibility
with some IPv6 implementations, as reported here:
https://www.spinics.net/lists/netdev/msg543846.html

This patchset contains four patches:
- patch 1 moves rbtree-related code from IPv4 to files shared b/w
IPv4/IPv6
- patch 2 changes IPv6 defragmenation code to use rbtrees for defrag
queue
- patch 3 changes nf_conntrack IPv6 defragmentation code to use rbtrees
- patch 4 changes ip_defrag selftest to test changes made in the
previous three patches.

Along the way, the 1280-byte restrictions are removed.

I plan to introduce similar changes to 6lowpan defragmentation code
once I figure out how to test it.
====================

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoselftests: net: ip_defrag: cover new IPv6 defrag behavior
Peter Oskolkov [Tue, 22 Jan 2019 18:02:53 +0000 (10:02 -0800)]
selftests: net: ip_defrag: cover new IPv6 defrag behavior

This patch adds several changes to the ip_defrag selftest, to cover
new IPv6 defrag behavior:

- min IPv6 frag size is now 8 instead of 1280

- new test cases to cover IPv6 defragmentation in nf_conntrack_reasm.c

- new "permissive" mode in negative (overlap) tests: netfilter
sometimes drops invalid packets without passing them to IPv6
underneath, and thus defragmentation sometimes succeeds when
it is expected to fail; so the permissive mode does not fail the
test if the correct reassembled datagram is received instead of a
timeout.

Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: IP6 defrag: use rbtrees in nf_conntrack_reasm.c
Peter Oskolkov [Tue, 22 Jan 2019 18:02:52 +0000 (10:02 -0800)]
net: IP6 defrag: use rbtrees in nf_conntrack_reasm.c

Currently, IPv6 defragmentation code drops non-last fragments that
are smaller than 1280 bytes: see
commit 0ed4229b08c1 ("ipv6: defrag: drop non-last frags smaller than min mtu")

This behavior is not specified in IPv6 RFCs and appears to break
compatibility with some IPv6 implemenations, as reported here:
https://www.spinics.net/lists/netdev/msg543846.html

This patch re-uses common IP defragmentation queueing and reassembly
code in IP6 defragmentation in nf_conntrack, removing the 1280 byte
restriction.

Signed-off-by: Peter Oskolkov <posk@google.com>
Reported-by: Tom Herbert <tom@herbertland.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: IP6 defrag: use rbtrees for IPv6 defrag
Peter Oskolkov [Tue, 22 Jan 2019 18:02:51 +0000 (10:02 -0800)]
net: IP6 defrag: use rbtrees for IPv6 defrag

Currently, IPv6 defragmentation code drops non-last fragments that
are smaller than 1280 bytes: see
commit 0ed4229b08c1 ("ipv6: defrag: drop non-last frags smaller than min mtu")

This behavior is not specified in IPv6 RFCs and appears to break
compatibility with some IPv6 implemenations, as reported here:
https://www.spinics.net/lists/netdev/msg543846.html

This patch re-uses common IP defragmentation queueing and reassembly
code in IPv6, removing the 1280 byte restriction.

Signed-off-by: Peter Oskolkov <posk@google.com>
Reported-by: Tom Herbert <tom@herbertland.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: IP defrag: encapsulate rbtree defrag code into callable functions
Peter Oskolkov [Tue, 22 Jan 2019 18:02:50 +0000 (10:02 -0800)]
net: IP defrag: encapsulate rbtree defrag code into callable functions

This is a refactoring patch: without changing runtime behavior,
it moves rbtree-related code from IPv4-specific files/functions
into .h/.c defrag files shared with IPv6 defragmentation code.

Signed-off-by: Peter Oskolkov <posk@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 's390-qeth-next'
David S. Miller [Sat, 26 Jan 2019 05:23:56 +0000 (21:23 -0800)]
Merge branch 's390-qeth-next'

Julian Wiedmann says:

====================
s390/qeth: updates 2019-01-25

please apply a first batch of qeth patches for net-next, primarily touching the
net_device parts of the driver.
In addition to the usual refactoring & code consolidation, patch 7 makes use of
netif_device_detach() to let the stack know when our control plane is down. This
helps quite a bit wrt to overall locking and proper init/shutdown sequencing.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: remove VLAN tracking for L2 devices
Julian Wiedmann [Fri, 25 Jan 2019 14:44:23 +0000 (15:44 +0100)]
s390/qeth: remove VLAN tracking for L2 devices

For recovery purposes, qeth keeps track of all registered VIDs. Replace
this by using the infrastructure introduced in
commit 9daae9bd47cf ("net: Call add/kill vid ndo on vlan filter feature toggling").

By managing NETIF_F_HW_VLAN_CTAG_FILTER as a hw_feature,
netdev_update_features() will select it from dev->wanted_features
and replay all of the netdevice's VIDs to its ndo_vlan_rx_add_vid()
callback.
z/VM NICs strictly require VLAN registration, so don't expose it as
hw_feature there but add a little hack in qeth_enable_hw_features()
to make things work regardless.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: detach netdevice while card is offline
Julian Wiedmann [Fri, 25 Jan 2019 14:44:22 +0000 (15:44 +0100)]
s390/qeth: detach netdevice while card is offline

When a qeth card is offline, it has no connection to the HW. So none of
our control callbacks can run IO against it, and we can only cache the
input (eg a new MAC address) without providing proper feedback to the
caller. In this context, it seems much more reasonable to simply detach
the netdevice and let the kernel reject any interaction with it.

This also makes all sorts of internal state checks and locking obsolete.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: delay netdevice registration
Julian Wiedmann [Fri, 25 Jan 2019 14:44:21 +0000 (15:44 +0100)]
s390/qeth: delay netdevice registration

Re-order the code flow a bit so that all initial HW setup is done before
putting the netdevice into play. For a netdevice that hasn't been
registered before, we also don't need to re-enable its HW features or
check for recovery actions.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: remove TX disable from online path
Julian Wiedmann [Fri, 25 Jan 2019 14:44:20 +0000 (15:44 +0100)]
s390/qeth: remove TX disable from online path

At best this is redundant, at worst it papers over a race in the
offline / online code.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: register MAC address earlier
Julian Wiedmann [Fri, 25 Jan 2019 14:44:19 +0000 (15:44 +0100)]
s390/qeth: register MAC address earlier

commit 4789a2188048 ("s390/qeth: fix race when setting MAC address")
resolved a race where our initial programming of dev_addr into the HW
and a call to ndo_set_mac_address() could run concurrently. In this
case, we could end up getting confused about which address was actually
set in the HW.

The quick fix was to introduce additional locking that blocks any
ndo_set_mac_address() while the device is being set online. But the race
primarily originated from the fact that we first register the netdevice,
and only then program its dev_addr. By re-ordering this sequence,
userspace will only be able to change the MAC address _after_ we have
finished with setting the initial dev_addr.

Still, the same MAC address race can also occur during a subsequent call
to qeth_l2_set_online(). So keep around the locking for now, until a
follow-up patch fully resolves this.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: consolidate open/stop netdev ops
Julian Wiedmann [Fri, 25 Jan 2019 14:44:18 +0000 (15:44 +0100)]
s390/qeth: consolidate open/stop netdev ops

The L2 and L3 code for these ops is almost identical, we only need to
provide a custom ndo_validate_addr() for L2 that checks whether
programming the MAC address succeeded.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: remove bogus netif_wake_queue()
Julian Wiedmann [Fri, 25 Jan 2019 14:44:17 +0000 (15:44 +0100)]
s390/qeth: remove bogus netif_wake_queue()

qeth_qdio_cq_handler() doesn't replenish the Output Queue(s), and thus
has no reason to wake the txq.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agos390/qeth: streamline TX buffer management
Julian Wiedmann [Fri, 25 Jan 2019 14:44:16 +0000 (15:44 +0100)]
s390/qeth: streamline TX buffer management

Consolidate the code that marks the current buffer to be flushed, and
let qeth_fill_buffer() advance the Output Queue's buffer cursor.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoDocumentation: net: phy: reflect latest changes to phylib API
Heiner Kallweit [Fri, 25 Jan 2019 20:08:24 +0000 (21:08 +0100)]
Documentation: net: phy: reflect latest changes to phylib API

Recent changes to the phylib API
- removed phy_stop_interrupts
- replaced phy_start_interrupts with phy_request_interrupt
- moved some functionality from phy_connect() and phy_disconnect()
  to phy_start() and phy_stop() respectively.
Reflect these changes in the documentation.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge tag 'mlx5-updates-2019-01-25' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Sat, 26 Jan 2019 05:20:35 +0000 (21:20 -0800)]
Merge tag 'mlx5-updates-2019-01-25' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2019-01-25

This series provides some updates to mlx5 driver,

From Tariq,
1) Make sure RX packet header does not cross page boundary
   To avoid page boundary crossing, use stride size that fits
   the maximum possible header. Stride is increased form 64B to 256B.

2) CQ struct cleanup: Take CQ decompress fields into a separate structure

From Moshe,
3) Expand XPS cpumask to cover all online cpus

From Jason Gunthorpe and Tariq:
4) Compilation warning cleanup

From Or,
5) Add trace points for flow tables create/destroy

From Saeed,
6) Software stats update/folding improvements
   this also solves a compilation warning on 32bit systems that was reported
   last release cycle by Arnd and Andrew.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5e: Reuse fold sw stats in representors
Saeed Mahameed [Wed, 12 Dec 2018 09:42:30 +0000 (01:42 -0800)]
net/mlx5e: Reuse fold sw stats in representors

Representors software stats are basic, this patch is reusing the
mlx5e_fold_sw_stats in representors, which sums up the basic stats64 for a
mlx5e netdevice.

Fixes: 8bfaf07f7806 ("net/mlx5e: Present SW stats when state is not opened")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet/mlx5e: Present the representors SW stats when state is not opened
Tariq Toukan [Thu, 8 Nov 2018 09:37:24 +0000 (11:37 +0200)]
net/mlx5e: Present the representors SW stats when state is not opened

This behavior is already adopted for all other cases in the cited patch.
The representor's functions were missed, here we modify the them to
behave similarly.

Fixes: 8bfaf07f7806 ("net/mlx5e: Present SW stats when state is not opened")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet/mlx5e: Separate between ethtool and netdev software stats folding
Saeed Mahameed [Sat, 3 Nov 2018 01:21:27 +0000 (18:21 -0700)]
net/mlx5e: Separate between ethtool and netdev software stats folding

mlx5e_grp_sw_update_stats can be called from two threads,
1) ndo_get_stats64
2) get_ethtool_stats

For this reason and to minimize concurrency issue impact on 64bit machines
mlx5e_grp_sw_update_stats folds the software stats into a temporary
variable then copies it to the global driver stats, both ethtool and ndo
statistics callbacks will use the global software stats variable to report
whatever stats they need.

Actually ndo_get_stats64 doesn't need to fold the whole software stats
(mlx5e_grp_sw_update_stats), all it needs is five counters to fill the
rtnl_link_stats64 relevant stats parameter.

Hence this patch introduces a simpler helper function to fold software
stats for ndo_get_stats64 which will work directly on rtnl_link_stats64
stats parameter and not on the global or even temporary mlx5e_sw_stats
variable.

Since now mlx5e_grp_sw_update_stats is not called by ndo_get_stats64 we
can make it static and remove the temp var.

Unlike mlx5e_grp_sw_update_stats the new fold stats function doesn't
need to zero out the output statistics parameter since it is already
done by the stack @dev_get_stats().

This patch is fixing stack usage of mlx5e_grp_sw_update_stats on
x86 gcc-4.9 and higher, the concurrency issue between mlx5's
ndo_get_stats64 and get_ethtool_stats is resolved as well.

Fixes: 8bfaf07f7806 ("net/mlx5e: Present SW stats when state is not opened")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet/mlx5: Add trace points for flow tables create/destroy
Or Gerlitz [Tue, 18 Dec 2018 19:18:20 +0000 (21:18 +0200)]
net/mlx5: Add trace points for flow tables create/destroy

We were not tracking flow tables so far, add it up.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet/mlx5e: Return the allocated flow directly from __mlx5e_add_fdb_flow
Jason Gunthorpe [Sun, 20 Jan 2019 08:30:25 +0000 (10:30 +0200)]
net/mlx5e: Return the allocated flow directly from __mlx5e_add_fdb_flow

This confusing construction confuses the compiler which can't see
that flow is initialized if !err:

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c: In function `mlx5e_configure_flower`
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:2727:28: warning:
`flow` may be used uninitialized in this function
[-Wmaybe-uninitialized]

There is no reason for two function outputs, just return the
pointer directly and use ERR_PTR to encode a failure.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet/mlx5e: Expand XPS cpumask to cover all online cpus
Moshe Shemesh [Thu, 25 Oct 2018 12:03:38 +0000 (15:03 +0300)]
net/mlx5e: Expand XPS cpumask to cover all online cpus

Currently we have one cpu in XPS cpumask per tx queue, this is good
enough for default configuration where there is a tx queue per cpu.
However, once configuration changes to use less tx queues, part of the
cpus are not XPS-mapped and so the select queue decision falls back to
hash calculation and balancing is not guaranteed.

Expand XPS cpumask to enable using all cpus even when number of tx
queues is smaller than number of cpus.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet/mlx5e: Take CQ decompress fields into a separate structure
Tariq Toukan [Wed, 12 Sep 2018 15:32:49 +0000 (18:32 +0300)]
net/mlx5e: Take CQ decompress fields into a separate structure

Only the Receive CQ makes use of these fields. Take them
out into a separate struct and save space in the generic
CQ structure.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet/mlx5e: RX, Make sure packet header does not cross page boundary
Tariq Toukan [Tue, 25 Sep 2018 09:05:22 +0000 (12:05 +0300)]
net/mlx5e: RX, Make sure packet header does not cross page boundary

In the non-linear SKB memory scheme of Striding RQ, a packet header
could cross page boundary. This requires special care in fast path
that costs LoC, additional runtime instructions and branches.

It could happen when the header (up to 256B) does not fit in
a single stride. Avoid this by working with a stride size that fits
the maximum possible header. Stride is increased form 64B to 256B.

Performance:
Tested packet rate for UDP streams, single ring, on ConnectX-5.

Configuration:
Set Striding RQ and LRO ON (to enabled the non-linear SKB scheme).
GRO OFF, early drop by TC rule.

64B: 4x worse memory utilization, no page-crossers headers
- No degradation (5,887,305 pps).
- The reduction in memory utilization is compensated by the saving of
  branches tests.

192B: 1.33x worse memory utilization, avoid page-crossers headers
- Before: 5,727,252. After: 5,777,037. ~1% gain.

256B: Same memory util, no page-crossers
- Before: 5,691,885. After: 5,748,007. ~1% gain.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agonet: Revert devlink health changes.
David S. Miller [Fri, 25 Jan 2019 18:53:23 +0000 (10:53 -0800)]
net: Revert devlink health changes.

This reverts the devlink health changes from 9/17/2019,
Jiri wants things to be designed differently and it was
agreed that the easiest way to do this is start from the
beginning again.

Commits reverted:

cb5ccfbe73b389470e1dc11061bb185ef4bc9aec
880ee82f0313453ec5a6cb122866ac057263066b
c7af343b4e33578b7de91786a3f639c8cfa0d97b
ff253fedab961b22117a73ab808fcfa9e6852b50
6f9d56132eb6d2603d4273cfc65bed914ec47acb
fcd852c69d776c0f46c8f79e8e431e5cc6ddc7b7
8a66704a13d9713593342e29b4f0c19762f5746b
12bd0dcefe88782ac1c9fff632958dd1b71d27e5
aba25279c10094c5c97d09c3491ca86d00b4ad5e
ce019faa70f81555fa17ebc1d5a03651f2e7e15a
b8c45a033acc607201588f7665ba84207e5149e0

And the follow-on build fix:

o33a0efa4baecd689da9474ce0e8b673eb6931c60

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobridge: remove duplicated include from br_multicast.c
YueHaibing [Fri, 25 Jan 2019 02:59:09 +0000 (10:59 +0800)]
bridge: remove duplicated include from br_multicast.c

Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxfw: Replace license text with SPDX identifiers and adjust copyrights
Shalom Toledo [Thu, 24 Jan 2019 07:33:05 +0000 (07:33 +0000)]
mlxfw: Replace license text with SPDX identifiers and adjust copyrights

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agotipc: remove dead code in struct tipc_topsrv
Zhaolong Zhang [Thu, 24 Jan 2019 02:06:41 +0000 (10:06 +0800)]
tipc: remove dead code in struct tipc_topsrv

max_rcvbuf_size is no longer used since commit "414574a0af36".

Signed-off-by: Zhaolong Zhang <zhangzl2013@126.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'tcp_bbr-Improving-TCP-BBR-performance-for-WiFi-and-cellular-networks'
David S. Miller [Fri, 25 Jan 2019 06:27:27 +0000 (22:27 -0800)]
Merge branch 'tcp_bbr-Improving-TCP-BBR-performance-for-WiFi-and-cellular-networks'

Priyaranjan Jha says:

====================
tcp_bbr: Improving TCP BBR performance for WiFi and cellular networks

Ack aggregation is quite prevalent with wifi, cellular and cable modem
link tchnologies, ACK decimation in middleboxes, and common offloading
techniques such as TSO and GRO, at end hosts. Previously, BBR was often
cwnd-limited in the presence of severe ACK aggregation, which resulted in
low throughput due to insufficient data in flight.

To achieve good throughput for wifi and other paths with aggregation, this
patch series implements an ACK aggregation estimator for BBR, which
estimates the maximum recent degree of ACK aggregation and adapts cwnd
based on it. The algorithm is further described by the following
presentation:
https://datatracker.ietf.org/meeting/101/materials/slides-101-iccrg-an-update-on-bbr-work-at-google-00

(1) A preparatory patch, which refactors bbr_target_cwnd for generic
    inflight provisioning.

(2) Implements BBR ack aggregation estimator and adapts cwnd based
    on measured degree of ACK aggregation.
====================

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agotcp_bbr: adapt cwnd based on ack aggregation estimation
Priyaranjan Jha [Wed, 23 Jan 2019 20:04:54 +0000 (12:04 -0800)]
tcp_bbr: adapt cwnd based on ack aggregation estimation

Aggregation effects are extremely common with wifi, cellular, and cable
modem link technologies, ACK decimation in middleboxes, and LRO and GRO
in receiving hosts. The aggregation can happen in either direction,
data or ACKs, but in either case the aggregation effect is visible
to the sender in the ACK stream.

Previously BBR's sending was often limited by cwnd under severe ACK
aggregation/decimation because BBR sized the cwnd at 2*BDP. If packets
were acked in bursts after long delays (e.g. one ACK acking 5*BDP after
5*RTT), BBR's sending was halted after sending 2*BDP over 2*RTT, leaving
the bottleneck idle for potentially long periods. Note that loss-based
congestion control does not have this issue because when facing
aggregation it continues increasing cwnd after bursts of ACKs, growing
cwnd until the buffer is full.

To achieve good throughput in the presence of aggregation effects, this
algorithm allows the BBR sender to put extra data in flight to keep the
bottleneck utilized during silences in the ACK stream that it has evidence
to suggest were caused by aggregation.

A summary of the algorithm: when a burst of packets are acked by a
stretched ACK or a burst of ACKs or both, BBR first estimates the expected
amount of data that should have been acked, based on its estimated
bandwidth. Then the surplus ("extra_acked") is recorded in a windowed-max
filter to estimate the recent level of observed ACK aggregation. Then cwnd
is increased by the ACK aggregation estimate. The larger cwnd avoids BBR
being cwnd-limited in the face of ACK silences that recent history suggests
were caused by aggregation. As a sanity check, the ACK aggregation degree
is upper-bounded by the cwnd (at the time of measurement) and a global max
of BW * 100ms. The algorithm is further described by the following
presentation:
https://datatracker.ietf.org/meeting/101/materials/slides-101-iccrg-an-update-on-bbr-work-at-google-00

In our internal testing, we observed a significant increase in BBR
throughput (measured using netperf), in a basic wifi setup.
- Host1 (sender on ethernet) -> AP -> Host2 (receiver on wifi)
- 2.4 GHz -> BBR before: ~73 Mbps; BBR after: ~102 Mbps; CUBIC: ~100 Mbps
- 5.0 GHz -> BBR before: ~362 Mbps; BBR after: ~593 Mbps; CUBIC: ~601 Mbps

Also, this code is running globally on YouTube TCP connections and produced
significant bandwidth increases for YouTube traffic.

This is based on Ian Swett's max_ack_height_ algorithm from the
QUIC BBR implementation.

Signed-off-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agotcp_bbr: refactor bbr_target_cwnd() for general inflight provisioning
Priyaranjan Jha [Wed, 23 Jan 2019 20:04:53 +0000 (12:04 -0800)]
tcp_bbr: refactor bbr_target_cwnd() for general inflight provisioning

Because bbr_target_cwnd() is really a general-purpose BBR helper for
computing some volume of inflight data as a function of the estimated
BDP, refactor it into following helper functions:
- bbr_bdp()
- bbr_quantization_budget()
- bbr_inflight()

Signed-off-by: Priyaranjan Jha <priyarjha@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8169: factor out PHY init sequence adjusting 10M and ALDPS
Heiner Kallweit [Wed, 23 Jan 2019 19:47:30 +0000 (20:47 +0100)]
r8169: factor out PHY init sequence adjusting 10M and ALDPS

Few chip versions use the same sequence to adjust 10M and ALDPS, so
let's factor it out. This patch also fixes a (most likely) typo in
rtl8168g_1_hw_phy_config. There bit 8 in reg 0x14 on page 0x0bcc
was set and not cleared. According to the vendor driver this bit
needs to be cleared in all cases.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8169: factor out disabling ALDPS
Heiner Kallweit [Wed, 23 Jan 2019 19:39:09 +0000 (20:39 +0100)]
r8169: factor out disabling ALDPS

Chip versions from RTL8168g onward use the same sequence to disable
ALDPS (Advanced Link-Down Power Saving). So let's factor this out.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobonding: count master 3ad stats separately
Nikolay Aleksandrov [Wed, 23 Jan 2019 17:14:50 +0000 (19:14 +0200)]
bonding: count master 3ad stats separately

I made a dumb mistake when I summed up the slave stats, obviously slaves
can come and go which would make the master stats unreliable.
Count and export the master stats separately.

Fixes: a258aeacd7f0 ("bonding: add support for xstats and export 3ad stats")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'net-phy-improve-starting-PHY'
David S. Miller [Fri, 25 Jan 2019 06:15:15 +0000 (22:15 -0800)]
Merge branch 'net-phy-improve-starting-PHY'

Heiner Kallweit says:

====================
net: phy: improve starting PHY

This patch series improves few aspects of starting the PHY.

v2:
- improve a warning in patch 4
v3:
- extend commit message for patch 2
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: change phy_start_interrupts to phy_request_interrupt
Heiner Kallweit [Wed, 23 Jan 2019 06:31:58 +0000 (07:31 +0100)]
net: phy: change phy_start_interrupts to phy_request_interrupt

Now that we enable the interrupts in phy_start() we don't have to do it
before. Therefore remove enabling interrupts from phy_start_interrupts()
and rename this function to reflect the changed functionality.

v2:
- improve warning to clearly state that we fall back to polling

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: start interrupts in phy_start
Heiner Kallweit [Wed, 23 Jan 2019 06:31:23 +0000 (07:31 +0100)]
net: phy: start interrupts in phy_start

Interrupts don't have to be enabled before calling phy_start().
Therefore let's enable them in phy_start(). In a subsequent step
we'll remove enabling interrupts from phy_connect_direct().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: warn if phy_start is called from invalid state
Heiner Kallweit [Wed, 23 Jan 2019 06:30:38 +0000 (07:30 +0100)]
net: phy: warn if phy_start is called from invalid state

phy_start() should be called from states PHY_READY or PHY_HALTED only.
Check for this to detect misbehaving drivers. Also the state machine
should be started only when being called from one of the valid states.

Some more background:
For all invalid states phy_start() basically was a no-op. All it did
was triggering a state machine run, but for all "running" states the
poll loop was active anyway. And if called from PHY_DOWN, the state
machine does nothing.

v3:
- extended commit message

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: start state machine in phy_start only
Heiner Kallweit [Wed, 23 Jan 2019 06:27:21 +0000 (07:27 +0100)]
net: phy: start state machine in phy_start only

The state machine is a no-op before phy_start() has been called.
Therefore let's enable it in phy_start() only. In phy_start()
let's call phy_start_machine() instead of phy_trigger_machine().
phy_start_machine is an alias for phy_trigger_machine but it makes
clearer that we start the state machine here instead of just
triggering a run.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Fix return value check in qcom_ethqos_probe()
Wei Yongjun [Wed, 23 Jan 2019 06:19:18 +0000 (06:19 +0000)]
net: stmmac: Fix return value check in qcom_ethqos_probe()

In case of error, the function devm_clk_get() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Fixes: a7c30e62d4b8 ("net: stmmac: Add driver for Qualcomm ethqos")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: amd8111e: clean up two minor indentation issues
Colin Ian King [Tue, 22 Jan 2019 14:37:55 +0000 (14:37 +0000)]
net: amd8111e: clean up two minor indentation issues

Two statements are incorrecly indented, fix these by removing a space.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'ENETC'
David S. Miller [Fri, 25 Jan 2019 05:55:53 +0000 (21:55 -0800)]
Merge branch 'ENETC'

Claudiu Manoil says:

====================
Introduce ENETC ethernet drivers

ENETC is a multi-port virtualized Ethernet controller supporting GbE
designs and Time-Sensitive Networking (TSN) functionality.
ENETC is operating as an SR-IOV multi-PF capable Root Complex Integrated
Endpoint (RCIE).  As such, it contains multiple physical (PF) and virtual
(VF) PCIe functions, discoverable by standard PCI Express.

The patch series adds basic enablement for these otherwise standard
buffer descriptor (BD) ring based ethernet devices (PCIe PFs and VFs),
currently included in the 64-bit dual ARMv8 processors LS1028A SoC.
The driver is portable to 32-bit designs, and it's independent of CPU
endianness.

Contributors:
Alex Marginean <alexandru.marginean@nxp.com>
Catalin Horghidan <catalin.horghidan@nxp.com>

TODO list:
* IEEE 1588 PTP support;
* TSN support;
* MDIO support and VF link management;
* power management support;
* flow control support;
* TC offloading with h/w MQPRIO;
* interrupt coalescing, configurable BD ring sizes, and other usual
config options if missing.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoenetc: Add RFS and RSS support
Claudiu Manoil [Tue, 22 Jan 2019 13:29:57 +0000 (15:29 +0200)]
enetc: Add RFS and RSS support

A ternary match table is used for RFS. If multiple entries in the table
match, the entry with the lowest numerical values index is chosen as the
matching entry.  Entries in the table are identified using an index
which takes a value from 0 to PRFSCAPR[NUM_RFS]-1 when accessed by the
PSI (PF).
Portions of the RFS table can be assigned to each SI by the PSI (PF)
driver in PSIaRFSCFGR.  Assignments are cumulative, the entries assigned
to SIn start after those assigned to SIn-1.  The total assignments to
all SIs must be equal to or less than the number available to the port
as found in PRFSCAPR.

For RSS, the Toeplitz hash function used requires two inputs, a 40B
random secret key that is supplied through the PRSSKR0-9 registers as well
as the relevant pieces of the packet header (n-tuple).  The 6 LSB bits of
the hash function result will then be used as a pointer to obtain the tag
referenced in the 64 entry indirection table.  The result will provide a
winning group which will be used to help route the received packet.

Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoenetc: Add vf to pf messaging support
Claudiu Manoil [Tue, 22 Jan 2019 13:29:56 +0000 (15:29 +0200)]
enetc: Add vf to pf messaging support

VSIs (VFs) may send a message to the PSI (PF) for general notification
or to gain access to hardware resources which requires host inspection.
These messages may vary in size and are handled as a partition copy
between two memory regions owned by the respective participants.
The PSI will respond with fail or success and a 16-bit message code.
The patch implements the vf to pf messaging mechanism above and, as the
first application making use of this support, it enables the VF to
configure its own primary MAC address.

Signed-off-by: Catalin Horghidan <catalin.horghidan@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoenetc: Add ethtool statistics
Claudiu Manoil [Tue, 22 Jan 2019 13:29:55 +0000 (15:29 +0200)]
enetc: Add ethtool statistics

This adds most h/w statistics counters: non-privileged SI conters, as
well as privileged Port and MAC counters available only to the PF.
Per ring software stats are also included.

Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoenetc: Introduce basic PF and VF ENETC ethernet drivers
Claudiu Manoil [Tue, 22 Jan 2019 13:29:54 +0000 (15:29 +0200)]
enetc: Introduce basic PF and VF ENETC ethernet drivers

ENETC is a multi-port virtualized Ethernet controller supporting GbE
designs and Time-Sensitive Networking (TSN) functionality.
ENETC is operating as an SR-IOV multi-PF capable Root Complex Integrated
Endpoint (RCIE).  As such, it contains multiple physical (PF) and
virtual (VF) PCIe functions, discoverable by standard PCI Express.

Introduce basic PF and VF ENETC ethernet drivers.  The PF has access to
the ENETC Port registers and resources and makes the required privileged
configurations for the underlying VF devices.  Common functionality is
controlled through so called System Interface (SI) register blocks, PFs
and VFs own a SI each.  Though SI register blocks are almost identical,
there are a few privileged SI level controls that are accessible only to
PFs, and so the distinction is made between PF SIs (PSI) and VF SIs (VSI).
As such, the bulk of the code, including datapath processing, basic h/w
offload support and generic pci related configuration, is shared between
the 2 drivers and is factored out in common source files (i.e. enetc.c).

Major functionalities included (for both drivers):
MSI-X support for Rx and Tx processing, assignment of Rx/Tx BD ring pairs
to MSI-X entries, multi-queue support, Rx S/G (Rx frame fragmentation) and
jumbo frame (up to 9600B) support, Rx paged allocation and reuse, Tx S/G
support (NETIF_F_SG), Rx and Tx checksum offload, PF MAC filtering and
initial control ring support, VLAN extraction/ insertion, PF Rx VLAN
CTAG filtering, VF mac address config support, VF VLAN isolation support,
etc.

Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx4_core: A write memory barrier is sufficient in EQ ci update
Tariq Toukan [Tue, 22 Jan 2019 13:25:50 +0000 (15:25 +0200)]
net/mlx4_core: A write memory barrier is sufficient in EQ ci update

Soften the memory barrier call of mb() by a sufficient wmb() in the
consumer index update of the event queues.

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8169: improve firmware handling
Heiner Kallweit [Tue, 22 Jan 2019 21:23:41 +0000 (22:23 +0100)]
r8169: improve firmware handling

So far member rtl_fw has three states:
- IS_ERR(rtl_fw): firmware not loaded
- !rtl_fw: no firmware available
- other: firmware loaded

This can be made simpler and clearer by adding the firmware name as
member fw_name to struct rtl8169_private. Then:

- !fw_name: no firmware available
- !rtl_fw: firmware not loaded
- rtl_fw: firmware loaded

This change also allows to easily merge rtl_request_uncached_firmware
into rtl_request_firmware.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'hns3-next'
David S. Miller [Wed, 23 Jan 2019 19:13:02 +0000 (11:13 -0800)]
Merge branch 'hns3-next'

Huazhong Tan says:

====================
code optimizations & bugfixes for HNS3 driver

This patchset includes bugfixes and code optimizations for the HNS3
ethernet controller driver

Change log:
V1->V2: fixes comment from Eric Dumazet
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: fix PFC not setting problem for DCB module
Yunsheng Lin [Tue, 22 Jan 2019 23:39:38 +0000 (07:39 +0800)]
net: hns3: fix PFC not setting problem for DCB module

The PFC enabling is based on user priority, currently it is
based on TC, which may cause PFC not setting correctly when pri
to TC mapping is not one to one relation.

This patch adds pfc_en in tm_info to fix it.

Fixes: cacde272dd00 ("net: hns3: Add hclge_dcb module for the support of DCB feature")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: add statistics for PFC frames and MAC control frames
liuzhongzhu [Tue, 22 Jan 2019 23:39:37 +0000 (07:39 +0800)]
net: hns3: add statistics for PFC frames and MAC control frames

In the old firmware version, statistics acquisition of
PFC frames and MAC control frames is not supported.
Add command retrieves statistics for PFC frames and
MAC control frames from the firmware.

Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: add ETS TC weight setting in SSU module
Yunsheng Lin [Tue, 22 Jan 2019 23:39:36 +0000 (07:39 +0800)]
net: hns3: add ETS TC weight setting in SSU module

This patch sets the TC weight in SSU module according to
info in tm_info.

Also, zero weight of TC weight in SSU ETS module means enabling
strict priority, so do not allow zero weight when in ETS mode.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: do not return GE PFC setting err when initializing
Yunsheng Lin [Tue, 22 Jan 2019 23:39:35 +0000 (07:39 +0800)]
net: hns3: do not return GE PFC setting err when initializing

GE MAC does not support PFC, when driver is initializing and MAC
is in GE Mode, ignore the fw not supported error, otherwise
initialization will fail.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: Change fw error code NOT_EXEC to NOT_SUPPORTED
Yunsheng Lin [Tue, 22 Jan 2019 23:39:34 +0000 (07:39 +0800)]
net: hns3: Change fw error code NOT_EXEC to NOT_SUPPORTED

According to firmware error code definition, the error code of 2
means NOT_SUPPORTED, this patch changes it to NOT_SUPPORTED.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: clear param in ring when free ring
Peng Li [Tue, 22 Jan 2019 23:39:33 +0000 (07:39 +0800)]
net: hns3: clear param in ring when free ring

Param pending_buf and skb may be not NULL when free ring.
This patch clears them when free ring.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: fix bug of ethtool_ops.get_channels for VF
Huazhong Tan [Tue, 22 Jan 2019 23:39:32 +0000 (07:39 +0800)]
net: hns3: fix bug of ethtool_ops.get_channels for VF

The current code returns the number of all queues that can be used and
the number of queues that have been allocated, which is incorrect.
What should be returned is the number of queues allocated for each enabled
TC and the number of queues that can be allocated.

This patch fixes it.

Fixes: 849e46077689 ("net: hns3: add ethtool_ops.get_channels support for VF")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: fix for shaper not setting when TC num changes
Yunsheng Lin [Tue, 22 Jan 2019 23:39:31 +0000 (07:39 +0800)]
net: hns3: fix for shaper not setting when TC num changes

Shaper setting does not change currently, when TC num changes,
which may cause shaper parameter not setting problem.

This patch fixes it by setting the shaper parameter when TC num
changes.

Fixes: cacde272dd00 ("net: hns3: Add hclge_dcb module for the support of DCB feature")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: fix rss configuration lost problem when setting channel
Yunsheng Lin [Tue, 22 Jan 2019 23:39:30 +0000 (07:39 +0800)]
net: hns3: fix rss configuration lost problem when setting channel

Currently rss configuration set by user will be lost when setting
channel.

This patch fixes it by not setting rss configuration to default
if user has configured the rss.

Fixes: 09f2af6405b8 ("net: hns3: add support to modify tqps number")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: refactor the statistics updating for netdev
Jian Shen [Tue, 22 Jan 2019 23:39:29 +0000 (07:39 +0800)]
net: hns3: refactor the statistics updating for netdev

In origin codes, there are some statistics item are got from mac, which
also include the packets statistics of VF. It is unreasonable. This
patch fixes it by counting them in the rx/tx processing flow.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: add rx multicast packets statistic
Jian Shen [Tue, 22 Jan 2019 23:39:28 +0000 (07:39 +0800)]
net: hns3: add rx multicast packets statistic

This patch adds rx multicast packets statistic for each ring.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hns3: add calling roce callback function when link status change
Peng Li [Tue, 22 Jan 2019 23:39:27 +0000 (07:39 +0800)]
net: hns3: add calling roce callback function when link status change

This patch adds calling roce callback function when link status
change.

Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'mlxsw-Add-VXLAN-support-for-Spectrum-2'
David S. Miller [Wed, 23 Jan 2019 17:28:27 +0000 (09:28 -0800)]
Merge branch 'mlxsw-Add-VXLAN-support-for-Spectrum-2'

Ido Schimmel says:

====================
mlxsw: Add VXLAN support for Spectrum-2

This patchset adds support for VXLAN tunneling on the Spectrum-2 ASIC.
Spectrum-1 and Spectrum-2 are largely backward compatible in this area,
so not too many changes are required.

Patches #1-#2 expose a function and perform small refactoring towards
the actual Spectrum-2 implementation in patches #3-#4.

Patch #3 adds the required initialization steps on Spectrum-2.

Patch #4 finally enables VXLAN on Spectrum-2.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum_nve: Enable VXLAN on Spectrum-2
Ido Schimmel [Wed, 23 Jan 2019 14:32:59 +0000 (14:32 +0000)]
mlxsw: spectrum_nve: Enable VXLAN on Spectrum-2

Enable VXLAN on Spectrum-2 as previous patches added the required
functionality.

Note that for now Spectrum-1 and Spectrum-2 use the same function to
determine whether the VXLAN configuration is valid or not. In the
future, when the driver will be extended to support features not present
in Spectrum-1, two different functions will be needed.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum_nve: Add support for VXLAN on Spectrum-2
Ido Schimmel [Wed, 23 Jan 2019 14:32:57 +0000 (14:32 +0000)]
mlxsw: spectrum_nve: Add support for VXLAN on Spectrum-2

Spectrum-1 and Spectrum-2 are largely backward compatible with regards
to VXLAN. One difference - as explained in previous patch - is that an
underlay RIF needs to be specified instead of an underlay VR during NVE
initialization. This is accomplished by calling the relevant function
that returns the index of such a RIF based on the table ID
(RT_TABLE_MAIN) where underlay look up occurs.

The second difference is that VXLAN learning (snooping) is controlled
via a different register (TNPC).

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum_nve: Breakout common code to a common function
Ido Schimmel [Wed, 23 Jan 2019 14:32:56 +0000 (14:32 +0000)]
mlxsw: spectrum_nve: Breakout common code to a common function

The configuration of a VXLAN tunnel in Spectrum-1 and Spectrum-2 is
largely the same. To avoid code duplication, breakout the common parts
to a common function that can be invoked from the ASIC-specific code.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum: Expose functions to create and destroy underlay RIF
Ido Schimmel [Wed, 23 Jan 2019 14:32:55 +0000 (14:32 +0000)]
mlxsw: spectrum: Expose functions to create and destroy underlay RIF

In Spectrum-2, instead of providing the ID of the virtual router (VR)
where NVE underlay lookups will occur as in Spectrum-1, the ID of a
router interface (RIF) in this VR is required.

Expose functions to create and destroy such a RIF.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx4: Mark expected switch fall-through
Gustavo A. R. Silva [Wed, 23 Jan 2019 08:05:11 +0000 (02:05 -0600)]
net/mlx4: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warning:

drivers/net/ethernet/mellanox/mlx4/eq.c: In function ‘mlx4_eq_int’:
drivers/net/ethernet/mellanox/mlx4/mlx4.h:219:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (mlx4_debug_level)      \
     ^
drivers/net/ethernet/mellanox/mlx4/eq.c:558:4: note: in expansion of macro ‘mlx4_dbg’
    mlx4_dbg(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT. srq_no=0x%x, eq 0x%x\n",
    ^~~~~~~~
drivers/net/ethernet/mellanox/mlx4/eq.c:561:3: note: here
   case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR:
   ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoqed: Mark expected switch fall-through
Gustavo A. R. Silva [Wed, 23 Jan 2019 07:59:12 +0000 (01:59 -0600)]
qed: Mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warning:

drivers/net/ethernet/qlogic/qed/qed_cxt.c:2126:4: warning: this statement may fall through [-Wimplicit-fallthrough=]

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobna: Mark expected switch fall-throughs
Gustavo A. R. Silva [Wed, 23 Jan 2019 07:53:28 +0000 (01:53 -0600)]
bna: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warnings:

drivers/net/ethernet/brocade/bna/bfa_ioc.c:790:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/ethernet/brocade/bna/bfa_ioc.c:860:3: warning: this statement may fall through [-Wimplicit-fallthrough=]

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobroadcom: Mark expected switch fall-throughs
Gustavo A. R. Silva [Wed, 23 Jan 2019 07:41:19 +0000 (01:41 -0600)]
broadcom: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warnings:

drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c:6336:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:2231:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/ethernet/broadcom/tg3.c:722:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/ethernet/broadcom/tg3.c:783:6: warning: this statement may fall through [-Wimplicit-fallthrough=]

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: 3c509: mark expected switch fall-throughs
Gustavo A. R. Silva [Wed, 23 Jan 2019 07:29:55 +0000 (01:29 -0600)]
net: 3c509: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warnings:

drivers/net/ethernet/3com/3c509.c:1265:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/net/ethernet/3com/3c509.c:1271:8: warning: this statement may fall through [-Wimplicit-fallthrough=]

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agotipc: mark expected switch fall-throughs
Gustavo A. R. Silva [Wed, 23 Jan 2019 07:09:31 +0000 (01:09 -0600)]
tipc: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

This patch fixes the following warnings:

net/tipc/link.c:1125:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
net/tipc/socket.c:736:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
net/tipc/socket.c:2418:7: warning: this statement may fall through [-Wimplicit-fallthrough=]

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enabling
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobnx2x: Bump up driver version to 1.713.36
Sudarsana Reddy Kalluru [Tue, 22 Jan 2019 11:05:20 +0000 (03:05 -0800)]
bnx2x: Bump up driver version to 1.713.36

Recently, there were bunch of fixes to bnx2x driver, the code is now
aligned to out-of-box driver version 1.713.36. This patch updates
bnx2x driver version to 1.713.36.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agodevlink: Use DIV_ROUND_UP_ULL in DEVLINK_HEALTH_SIZE_TO_BUFFERS
Nathan Chancellor [Tue, 22 Jan 2019 04:23:01 +0000 (21:23 -0700)]
devlink: Use DIV_ROUND_UP_ULL in DEVLINK_HEALTH_SIZE_TO_BUFFERS

When building this code on a 32-bit platform such as ARM, there is a
link time error (lld error shown, happpens with ld.bfd too):

ld.lld: error: undefined symbol: __aeabi_uldivmod
>>> referenced by devlink.c
>>>               net/core/devlink.o:(devlink_health_buffers_create) in archive built-in.a

This happens when using a regular division symbol with a u64 dividend.
Use DIV_ROUND_UP_ULL, which wraps do_div, to avoid this situation.

Fixes: cb5ccfbe73b3 ("devlink: Add health buffer support")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: Add SDPX tag based on COPYING file
Andrew Lunn [Mon, 21 Jan 2019 18:34:53 +0000 (19:34 +0100)]
net: phy: Add SDPX tag based on COPYING file

Some of the PHY and MDIO drivers refer to the COPYING file in the main
directory of this archive. This is the main license for Linux, thus
GPLv2 plus syscall extension.

Fixup the MODULE_LICENSE() where needed and add an SDPX header for
GPLv2.

Cc: David Daney <david.daney@cavium.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: Fixup GPLv2 SPDX tags based on license text
Andrew Lunn [Mon, 21 Jan 2019 18:10:19 +0000 (19:10 +0100)]
net: phy: Fixup GPLv2 SPDX tags based on license text

A few PHY drivers have the GPLv2 license text. They then either have
a MODULE_LICENSE() of GPLv2+, or an SPDX tag of GPLv2+.

Since the license text is much easier to understand than either the
SPDX tag or the MODULE_LICENSE, use it as the definitive source of the
licence, and fixup with others when there are contradictions.

Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Cc: Laurent Pinchart <laurentp@cse-semaphore.com>
Cc: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Cc: Scott Wood <scottwood@freescale.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Andrew F. Davis <afd@ti.com>
Acked-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>