Commit Graph

919594 Commits

Author SHA1 Message Date
Markus Theil
dca9ca2d58 nl80211: add ability to report TX status for control port TX
This adds the necessary capabilities in nl80211 to allow drivers to
assign a cookie to control port TX frames (returned via extack in
the netlink ACK message of the command) and then later report the
frame's status.

Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Link: https://lore.kernel.org/r/20200508144202.7678-2-markus.theil@tu-ilmenau.de
[use extack cookie instead of explicit message, recombine patches]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:04 +02:00
Gustavo A. R. Silva
3c23215ba8 mac80211: Replace zero-length array with flexible-array
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200507185907.GA15102@embeddedor
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:04 +02:00
Gustavo A. R. Silva
396fba0a59 cfg80211: Replace zero-length array with flexible-array
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200507183909.GA12993@embeddedor
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:03 +02:00
Tamizh Chelvam
fedd0fe4e8 mac80211: Add new AMPDU factor macro for HE peer caps
Add IEEE80211_HE_VHT_MAX_AMPDU_FACTOR and IEEE80211_HE_HT_MAX_AMPDU_FACTOR
as per spec to use for peer max ampdu factor.

Signed-off-by: Tamizh Chelvam <tamizhr@codeaurora.org>
Link: https://lore.kernel.org/r/1588611900-21185-1-git-send-email-tamizhr@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:03 +02:00
Thomas Pedersen
d6fb67ff86 ieee80211: S1G defines
These are found in IEEE-802.11ah-2016.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200430172554.18383-5-thomas@adapt-ip.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:03 +02:00
Thomas Pedersen
2032f3b2f9 nl80211: support scan frequencies in KHz
If the driver advertises NL80211_EXT_FEATURE_SCAN_FREQ_KHZ
userspace can omit NL80211_ATTR_SCAN_FREQUENCIES in favor
of an NL80211_ATTR_SCAN_FREQ_KHZ. To get scan results in
KHz userspace must also set the
NL80211_SCAN_FLAG_FREQ_KHZ.

This lets nl80211 remain compatible with older userspaces
while not requring and sending redundant (and potentially
incorrect) scan frequency sets.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200430172554.18383-4-thomas@adapt-ip.com
[use just nla_nest_start() (not _noflag) for NL80211_ATTR_SCAN_FREQ_KHZ]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:03 +02:00
Thomas Pedersen
942ba88ba9 nl80211: add KHz frequency offset for most wifi commands
cfg80211 recently gained the ability to understand a
frequency offset component in KHz. Expose this in nl80211
through the new attributes NL80211_ATTR_WIPHY_FREQ_OFFSET,
NL80211_FREQUENCY_ATTR_OFFSET,
NL80211_ATTR_CENTER_FREQ1_OFFSET, and
NL80211_BSS_FREQUENCY_OFFSET.

These add support to send and receive a KHz offset
component with the following NL80211 commands:

- NL80211_CMD_FRAME
- NL80211_CMD_GET_SCAN
- NL80211_CMD_AUTHENTICATE
- NL80211_CMD_ASSOCIATE
- NL80211_CMD_CONNECT

Along with any other command which takes a chandef, ie:

- NL80211_CMD_SET_CHANNEL
- NL80211_CMD_SET_WIPHY
- NL80211_CMD_START_AP
- NL80211_CMD_RADAR_DETECT
- NL80211_CMD_NOTIFY_RADAR
- NL80211_CMD_CHANNEL_SWITCH
- NL80211_JOIN_IBSS
- NL80211_CMD_REMAIN_ON_CHANNEL
- NL80211_CMD_JOIN_OCB
- NL80211_CMD_JOIN_MESH
- NL80211_CMD_TDLS_CHANNEL_SWITCH

If the driver advertises a band containing channels with
frequency offset, it must also verify support for
frequency offset channels in its cfg80211 ops, or return
an error.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200430172554.18383-3-thomas@adapt-ip.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:02 +02:00
Thomas Pedersen
e76fede8bf cfg80211: add KHz variants of frame RX API
Drivers may wish to report the RX frequency in units of
KHz. Provide cfg80211_rx_mgmt_khz() and wrap it with
cfg80211_rx_mgmt() so exisiting drivers which can't report
KHz anyway don't need to change. Add a similar wrapper for
cfg80211_report_obss_beacon() so the frequency units stay
somewhat consistent.

This doesn't actually change the nl80211 API yet.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200430172554.18383-2-thomas@adapt-ip.com
[fix mac80211 calling the non-khz version of obss beacon report,
 drop trace point name changes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:02 +02:00
Sergey Matyukevich
c03369558c nl80211: simplify peer specific TID configuration
Current rule for applying TID configuration for specific peer looks overly
complicated. No need to reject new TID configuration when override flag is
specified. Another call with the same TID configuration, but without
override flag, allows to apply new configuration anyway.

Use the same approach as for the 'all peers' case: if override flag is
specified, then reset existing TID configuration and immediately
apply a new one.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200424112905.26770-5-sergey.matyukevich.os@quantenna.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:02 +02:00
Sergey Matyukevich
33462e6823 cfg80211: add support for TID specific AMSDU configuration
This patch adds support to control per TID MSDU aggregation
using the NL80211_TID_CONFIG_ATTR_AMSDU_CTRL attribute.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200424112905.26770-4-sergey.matyukevich.os@quantenna.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:01 +02:00
Sergey Matyukevich
60c2ef0ef0 mac80211: fix variable names in TID config methods
Fix all variable names from 'tid' to 'tids' to avoid confusion.
Now this is not TID number, but TID mask.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200424112905.26770-3-sergey.matyukevich.os@quantenna.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:01 +02:00
Sergey Matyukevich
2d5d9b7ff4 cfg80211: fix mask type in cfg80211_tid_cfg structure
TIDs mask type is u64 in wiphy settings and nl80211 processing, see:
- wiphy TIDs mask sizes in tid_config_support structure
- prepare driver command in parse_tid_conf

Use the same type for TIDs mask in cfg80211_tid_cfg.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200424112905.26770-2-sergey.matyukevich.os@quantenna.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:00 +02:00
Oleksij Rempel
dc0f3ed197 net: phy: at803x: add cable diagnostics support for ATH9331 and ATH8032
Add support for Atheros 100Base-T PHYs. The only difference seems to be
the ability to test 2 pairs instead of 4 and the lack of 1000Base-T
specific register.

Only the ATH9331 was tested with this patch.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:26:04 -07:00
David S. Miller
943bbe1de5 Merge branch 'Raw-PHY-TDR-data'
Andrew Lunn says:

====================
Raw PHY TDR data

Some ethernet PHYs allow access to raw TDR data in addition to summary
diagnostics information. Add support for retrieving this data via
netlink ethtool. The basic structure in the core is the same as for
normal phy diagnostics, the PHY driver simply uses different helpers
to fill the netlink message with different data.

There is a graphical tool under development, as well a ethtool(1)
which can dump the data as text and JSON.

A patched ethtool(1) can be found in
https://github.com/lunn/ethtool.git feature/cable-test-v5

Thanks for Chris Healy for lots of testing.

v2:
See the individual patches but:

Pass distances in centimeters, not meters

Allow the PHY to round distances to what it supports and report what
it actually used along with the results.

Make the Marvell PHY use steps a multiple of 0.805 meters, its native
step size.

v3:
Move the TDR configuration into a structure
Add a range check on step
Use NL_SET_ERR_MSG_ATTR() when appropriate
Move TDR configuration into a nest
Document attributes in the request
Unsquash the last two patches
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:22:28 -07:00
Andrew Lunn
db8668a195 net: phy: marvell: Configure TDR pulse based on measurement length
When performing a TDR measurement for a short distance, the pulse
width should be low, to help differentiate between the outgoing pulse
and any reflection. For longer distances, the pulse should be wider,
to help with attenuation.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:22:21 -07:00
Andrew Lunn
a618e86da9 net : phy: marvell: Speedup TDR data retrieval by only changing page once
Getting the TDR data requires a large number of MDIO bus
transactions. The number can however be reduced if the page is only
changed once. Add the needed locking to allow this, and make use of
unlocked read/write methods where needed.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:22:21 -07:00
Andrew Lunn
f2bc8ad31a net: ethtool: Allow PHY cable test TDR data to configured
Allow the user to configure where on the cable the TDR data should be
retrieved, in terms of first and last sample, and the step between
samples. Also add the ability to ask for TDR data for just one pair.

If this configuration is not provided, it defaults to 1-150m at 1m
intervals for all pairs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>

v3:
Move the TDR configuration into a structure
Add a range check on step
Use NL_SET_ERR_MSG_ATTR() when appropriate
Move TDR configuration into a nest
Document attributes in the request

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:22:21 -07:00
Andrew Lunn
0c9bcc1d23 net: phy: marvell: Add support for amplitude graph
The Marvell PHYs can measure the amplitude of the returned signal for
a given distance. Implement this option of the cable test
infrastructure. When reporting the step, convert the distance into cm.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>

v2:
Step based on the measurement resolution, and convert this to cm.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:22:20 -07:00
Andrew Lunn
6b4a0fc106 net: ethtool: Add helpers for cable test TDR data
Add helpers for returning raw TDR helpers in netlink messages.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:22:20 -07:00
Andrew Lunn
1a644de29f net: ethtool: Add generic parts of cable test TDR
Add the generic parts of the code used to trigger a cable test and
return raw TDR data. Any PHY driver which support this must implement
the new driver op.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>

v2
Update nxp-tja11xx for API change.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:21:48 -07:00
Andrew Lunn
a331172b15 net: ethtool: Add attributes for cable test TDR data
Some Ethernet PHYs can return the raw time domain reflectromatry data.
Add the attributes to allow this data to be requested and returned via
netlink ethtool.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>

v2:
m -> cm
Report what the PHY actually used for start/stop/step.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:21:48 -07:00
Armin Wolf
53c0ec4f4d ne2k-pci: Fix various coding-style issues and improve printk() usage
Fixed a ton of minor checkpatch errors/warnings and remove version
printing at module init/when device is found and use MODULE_VERSION
instead. Also modifying the RTL8029 PCI string to include the compatible
RTL8029AS nic.
The only mayor issue remaining is the missing SPDX tag, but since the
exact version of the GPL is not stated anywhere inside the file, its
impossible to add such a tag at the moment.
But maybe it is possible, since 8390.h states Donald Becker's 8390
drivers are licensed under GPL 2.2 only (= GPL-2.0-only ?).
The kernel module containing this patch compiles and runs without
problems on a RTL8029AS-based NE2000 clone card with kernel 5.7.0-rc6.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:19:28 -07:00
Alexander Sverdlin
81f3dc9349 macvlan: Skip loopback packets in RX handler
Ignore loopback-originatig packets soon enough and don't try to process L2
header where it doesn't exist. The very similar br_handle_frame() in bridge
code performs exactly the same check.

This is an example of such ICMPv6 packet:

skb len=96 headroom=40 headlen=96 tailroom=56
mac=(40,0) net=(40,40) trans=80
shinfo(txflags=0 nr_frags=0 gso(size=0 type=0 segs=0))
csum(0xae2e9a2f ip_summed=1 complete_sw=0 valid=0 level=0)
hash(0xc97ebd88 sw=1 l4=1) proto=0x86dd pkttype=5 iif=24
dev name=etha01.212 feat=0x0x0000000040005000
skb headroom: 00000000: 00 7c 86 52 84 88 ff ff 00 00 00 00 00 00 08 00
skb headroom: 00000010: 45 00 00 9e 5d 5c 40 00 40 11 33 33 00 00 00 01
skb headroom: 00000020: 02 40 43 80 00 00 86 dd
skb linear:   00000000: 60 09 88 bd 00 38 3a ff fe 80 00 00 00 00 00 00
skb linear:   00000010: 00 40 43 ff fe 80 00 00 ff 02 00 00 00 00 00 00
skb linear:   00000020: 00 00 00 00 00 00 00 01 86 00 61 00 40 00 00 2d
skb linear:   00000030: 00 00 00 00 00 00 00 00 03 04 40 e0 00 00 01 2c
skb linear:   00000040: 00 00 00 78 00 00 00 00 fd 5f 42 68 23 87 a8 81
skb linear:   00000050: 00 00 00 00 00 00 00 00 01 01 02 40 43 80 00 00
skb tailroom: 00000000: ...
skb tailroom: 00000010: ...
skb tailroom: 00000020: ...
skb tailroom: 00000030: ...

Call Trace, how it happens exactly:
 ...
 macvlan_handle_frame+0x321/0x425 [macvlan]
 ? macvlan_forward_source+0x110/0x110 [macvlan]
 __netif_receive_skb_core+0x545/0xda0
 ? enqueue_task_fair+0xe5/0x8e0
 ? __netif_receive_skb_one_core+0x36/0x70
 __netif_receive_skb_one_core+0x36/0x70
 process_backlog+0x97/0x140
 net_rx_action+0x1eb/0x350
 ? __hrtimer_run_queues+0x136/0x2e0
 __do_softirq+0xe3/0x383
 do_softirq_own_stack+0x2a/0x40
 </IRQ>
 do_softirq.part.4+0x4e/0x50
 netif_rx_ni+0x60/0xd0
 dev_loopback_xmit+0x83/0xf0
 ip6_finish_output2+0x575/0x590 [ipv6]
 ? ip6_cork_release.isra.1+0x64/0x90 [ipv6]
 ? __ip6_make_skb+0x38d/0x680 [ipv6]
 ? ip6_output+0x6c/0x140 [ipv6]
 ip6_output+0x6c/0x140 [ipv6]
 ip6_send_skb+0x1e/0x60 [ipv6]
 rawv6_sendmsg+0xc4b/0xe10 [ipv6]
 ? proc_put_long+0xd0/0xd0
 ? rw_copy_check_uvector+0x4e/0x110
 ? sock_sendmsg+0x36/0x40
 sock_sendmsg+0x36/0x40
 ___sys_sendmsg+0x2b6/0x2d0
 ? proc_dointvec+0x23/0x30
 ? addrconf_sysctl_forward+0x8d/0x250 [ipv6]
 ? dev_forward_change+0x130/0x130 [ipv6]
 ? _raw_spin_unlock+0x12/0x30
 ? proc_sys_call_handler.isra.14+0x9f/0x110
 ? __call_rcu+0x213/0x510
 ? get_max_files+0x10/0x10
 ? trace_hardirqs_on+0x2c/0xe0
 ? __sys_sendmsg+0x63/0xa0
 __sys_sendmsg+0x63/0xa0
 do_syscall_64+0x6c/0x1e0
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 23:18:11 -07:00
David S. Miller
4fdd2dbc7c Merge branch 'mlxsw-Various-trap-changes-part-2'
Ido Schimmel says:

====================
mlxsw: Various trap changes - part 2

This patch set contains another set of small changes in mlxsw trap
configuration. It is the last set before exposing control traps (e.g.,
IGMP query, ARP request) via devlink-trap.

Tested with existing devlink-trap selftests. Please see individual
patches for a detailed changelog.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:59 -07:00
Ido Schimmel
10d3757fcb mlxsw: spectrum_router: Allow programming link-local prefix routes
The device has a trap for IPv6 packets that need be routed and have a
unicast link-local destination IP (i.e., fe80::/10). This allows mlxsw
to ignore link-local routes, as the packets will be trapped to the CPU
in any case.

However, since link-local routes are not programmed, it is possible for
routed packets to hit the default route which might also be programmed
to trap packets. This means that packets with a link-local destination
IP might be trapped for the wrong reason.

To overcome this, allow programming link-local prefix routes (usually
one fe80::/64 per-table), so that the packets will be forwarded until
reaching the link-local trap.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
9785b92b44 mlxsw: spectrum: Add packet traps for BFD packets
Bidirectional Forwarding Detection (BFD) provides "low-overhead,
short-duration detection of failures in the path between adjacent
forwarding engines" (RFC 5880).

This is accomplished by exchanging BFD packets between the two
forwarding engines. Up until now these packets were trapped via the
general local delivery (i.e., IP2ME) trap which also traps a lot of
other packets that are not as time-sensitive as BFD packets.

Expose dedicated traps for BFD packets so that user space could
configure a dedicated policer for them.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
dacc4e3acf mlxsw: spectrum: Treat IPv6 link-local SIP as an exception
IPv6 packets that need to be forwarded and have a link-local source IP are
dropped by the kernel and an ICMPv6 "Destination unreachable" is sent to
the sending host.

As such, change the trap group of such packets so that they do not
interfere with IPv6 management packets. In the future this trap will be
exposed as an exception via devlink-trap.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
1260e083d4 mlxsw: spectrum: Share one group for all locally delivered packets
Routed IP packets with the Router Alert option need to be trapped to
the CPU as they might need to be locally delivered to raw sockets with
the IP_ROUTER_ALERT / IPV6_ROUTER_ALERT socket option.

Move them to the same group with other packets that might need to be
trapped following route lookup.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
500769bebe mlxsw: reg: Move all trap groups under the same enum
After the previous patch the split is no longer necessary and all the
trap groups can be moved under the same enum.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
b87bde80da mlxsw: spectrum_trap: Do not hard code "thin" policer identifier
As explained in commit e612523041 ("mlxsw: spectrum_trap: Introduce
dummy group with thin policer"), the purpose of the "thin" policer is to
pass as less packets as possible to the CPU.

The identifier of this policer is currently set according to the maximum
number of used trap groups, but this is fragile: On Spectrum-1 the
maximum number of policers is less than the maximum number of trap
groups, which might result in an invalid policer identifier in case the
number of used trap groups grows beyond the policer limit.

Solve this by dynamically allocating the policer identifier.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
03cb0ce0dd mlxsw: switchx2: Move SwitchX-2 trap groups out of main enum
The number of Spectrum trap groups is not infinite, but two identifiers
are occupied by SwitchX-2 specific trap groups. Free these identifiers
by moving them out of the main enum.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
025b7de7f4 mlxsw: spectrum: Reduce priority of locally delivered packets
To align with recent recommended values. Will be configurable by future
patches.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:58 -07:00
Ido Schimmel
1e3cd58942 mlxsw: spectrum: Use same trap group for local routes and link-local destination
Packets with an IPv6 link-local destination (i.e., fe80::/10) should not
be forwarded and are therefore trapped to the CPU for local delivery.
Since these packets are trapped for the same logical reason as packets
hitting local routes, associate both traps with the same group.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:57 -07:00
Ido Schimmel
d322309d72 mlxsw: spectrum: Use separate trap group for FID miss
When a packet enters the device it is classified to a filtering
identifier (FID) based on the ingress port and VLAN. The FID miss trap
is used to trap packets for which a FID could not be found.

In mlxsw this trap should only be triggered when a port is enslaved to
an OVS bridge and a matching ACL rule could not be found, so as to
trigger learning.

These packets are therefore completely unrelated to packets hitting
local routes and should be in a different group. Move them.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:57 -07:00
Ido Schimmel
954eef2677 mlxsw: spectrum: Use same trap group for various IPv6 packets
Group these various IPv6 packets (e.g., router solicitations, router
advertisement) together and subject them to the same policer.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:57 -07:00
Ido Schimmel
412df3d1bb mlxsw: spectrum: Rename IPv6 ND trap group
The IPv6 Neighbour Discovery (ND) group will be used for various IPv6
packets, not all of which fall under the definition of ND, so rename it
to "IPV6" which is more appropriate.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:57 -07:00
Ido Schimmel
761bc42fbe mlxsw: spectrum: Use same switch case for identical groups
Trap groups that use the same policer settings can share the same switch
case.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:57 -07:00
Ido Schimmel
3c2d8a046a mlxsw: spectrum: Use dedicated trap group for ACL trap
Packets that are trapped via tc's trap action are currently subject to
the same policer as packets hitting local routes. The latter are
critical to the correct functioning of the control plane, while the
former are mainly used for traffic inspection.

Split the ACL trap to a separate group with its own policer. Use a
higher priority for these traps than for traps using mirror action
(e.g., ARP, IGMP). Otherwise, packets matching both traps will not be
forwarded in hardware (because of trap action) and also not forwarded in
software because they will be marked with 'offload_fwd_mark'.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:33:57 -07:00
Florian Westphal
4e637c70b5 mptcp: attempt coalescing when moving skbs to mptcp rx queue
We can try to coalesce skbs we take from the subflows rx queue with the
tail of the mptcp rx queue.

If successful, the skb head can be discarded early.

We can also free the skb extensions, we do not access them after this.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:29:32 -07:00
Heiner Kallweit
12b1bc75cd r8169: improve rtl_remove_one
Don't call netif_napi_del() manually, free_netdev() does this for us.
In addition reorder calls to match reverse order of calls in probe().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:27:18 -07:00
David S. Miller
394fe485f8 Merge branch 'net-ethernet-fec-move-GPR-register-offset-and-bit-into-DT'
Fugang Duan says:

====================
net: ethernet: fec: move GPR register offset and bit into DT

The commit da722186f6 (net: fec: set GPR bit on suspend by
DT configuration) set the GPR reigster offset and bit in driver
for wol feature support.

It brings trouble to enable wol feature on imx6sx/imx6ul/imx7d
platforms that have multiple ethernet instances with different
GPR bit for stop mode control. So the patch set is to move GPR
register offset and bit define into DT, and enable imx6q/imx6dl
imx6qp/imx6sx/imx6ul/imx7d stop mode support.

Currently, below NXP i.MX boards support wol:
- imx6q/imx6dl/imx6qp sabresd
- imx6sx sabreauto
- imx7d sdb

imx6q/imx6dl/imx6qp sabresd board dts file miss the property
"fsl,magic-packet;", so patch#4 is to add the property for stop
mode support.

v1 -> v2:
 - driver: switch back to store the quirks bitmask in driver_data
 - dt-bindings: rename 'gpr' property string to 'fsl,stop-mode'
 - imx6/7 dtsi: add imx6sx/imx6ul/imx7d ethernet stop mode property
v2 -> v3:
 - driver: suggested by Sascha Hauer, use a struct fec_devinfo for
   abstracting differences between different hardware variants,
   it can give more freedom to describe the differences.
 - imx6/7 dtsi: correct one typo pointed out by Andrew.

Thanks Martin, Andrew and Sascha Hauer for the review.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:21:43 -07:00
Fugang Duan
f099b8b753 ARM: dts: imx6qdl-sabresd: enable fec wake-on-lan
Enable ethernet wake-on-lan feature for imx6q/dl/qp sabresd
boards since the PHY clock is supplied by external osc.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:21:43 -07:00
Fugang Duan
d009a621b9 ARM: dts: imx: add ethernet stop mode property
- Update the imx6qdl gpr property to define gpr register
  offset and bit in DT.
- Add imx6sx/imx6ul/imx7d ethernet stop mode property.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:21:43 -07:00
Fugang Duan
998ec26b66 dt-bindings: fec: update the gpr property
- rename the 'gpr' property string to 'fsl,stop-mode'.
- Update the property to define gpr register offset and
bit in DT, since different instance have different gpr bit.

v2:
 * rename 'gpr' property string to 'fsl,stop-mode'.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:21:43 -07:00
Fugang Duan
8a448bf832 net: ethernet: fec: move GPR register offset and bit into DT
The commit da722186f6 (net: fec: set GPR bit on suspend by DT
configuration) set the GPR reigster offset and bit in driver for
wake on lan feature.

But it introduces two issues here:
- one SOC has two instances, they have different bit
- different SOCs may have different offset and bit

So to support wake-on-lan feature on other i.MX platforms, it should
configure the GPR reigster offset and bit from DT.

So the patch is to improve the commit da722186f6 (net: fec: set GPR
bit on suspend by DT configuration) to support multiple ethernet
instances on i.MX series.

v2:
 * switch back to store the quirks bitmask in driver_data
v3:
 * suggested by Sascha Hauer, use a struct fec_devinfo for
   abstracting differences between different hardware variants,
   it can give more freedom to describe the differences.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:21:43 -07:00
Dmitry Vyukov
09d0310f07 net/smc: mark smc_pnet_policy as const
Netlink policies are generally declared as const.
This is safer and prevents potential bugs.

Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:19:13 -07:00
David S. Miller
745bd6f44c One batch of changes, containing:
* hwsim improvements from Jouni and myself, to be able to
    test more scenarios easily
  * some more HE (802.11ax) support
  * some initial S1G (sub 1 GHz) work for fractional MHz channels
  * some (action) frame registration updates to help DPP support
  * along with other various improvements/fixes
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Merge tag 'mac80211-next-for-net-next-2020-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
One batch of changes, containing:
 * hwsim improvements from Jouni and myself, to be able to
   test more scenarios easily
 * some more HE (802.11ax) support
 * some initial S1G (sub 1 GHz) work for fractional MHz channels
 * some (action) frame registration updates to help DPP support
 * along with other various improvements/fixes
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 20:17:35 -07:00
David S. Miller
0e3481195b Merge branch 'net-phy-mscc-miim-reduce-waiting-time-between-MDIO-transactions'
Antoine Tenart says:

====================
net: phy: mscc-miim: reduce waiting time between MDIO transactions

This series aims at reducing the waiting time between MDIO transactions
when using the MSCC MIIM MDIO controller.

I'm not sure we need patch 4/4 and we could reasonably drop it from the
series. I'm including the patch as it could help to ensure the system
is functional with a non optimal configuration.

We needed to improve the driver's performances as when using a PHY
requiring lots of registers accesses (such as the VSC85xx family),
delays would add up and ended up to be quite large which would cause
issues such as: a slow initialization of the PHY, and issues when using
timestamping operations (this feature will be sent quite soon to the
mailing lists).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 15:33:57 -07:00
Antoine Tenart
a021ada2b7 net: phy: mscc-miim: read poll when high resolution timers are disabled
The driver uses a read polling mechanism to check the status of the MDIO
bus, to know if it is ready to accept next commands. This polling
mechanism uses usleep_delay() under the hood between reads which is fine
as long as high resolution timers are enabled. Otherwise the delays will
end up to be much longer than expected.

This patch fixes this by using udelay() under the hood when
CONFIG_HIGH_RES_TIMERS isn't enabled. This increases CPU usage.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 15:33:56 -07:00
Antoine Tenart
d9c6de35e0 net: phy: mscc-miim: improve waiting logic
The MSCC MIIM MDIO driver uses a waiting logic to wait for the MDIO bus
to be ready to accept next commands. It does so by polling the BUSY
status bit which indicates the MDIO bus has completed all pending
operations. This can take time, and the controller supports writing the
next command as soon as there are no pending commands (which happens
while the MDIO bus is busy completing its current command).

This patch implements this improved logic by adding an helper to poll
the PENDING status bit, and by adjusting where we should wait for the
bus to not be busy or to not be pending.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 15:33:56 -07:00