Commit Graph

798679 Commits

Author SHA1 Message Date
Petr Machata ff23b91ce1 vxlan: Add a function to init switchdev_notifier_vxlan_fdb_info
There are currently two places that need to initialize the notifier info
structure, and one more is coming next when vxlan_fdb_replay() is
introduced. These three instances have / will have very similar code
that is easy to abstract away into a named function.

Add such function, vxlan_fdb_switchdev_notifier_info(), and call it from
vxlan_fdb_switchdev_call_notifiers() and vxlan_fdb_find_uc().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-07 12:59:08 -08:00
David S. Miller 6b241e4116 Merge branch 'net-aquantia-add-RSS-configuration'
Igor Russkikh says:

====================
net: aquantia: add RSS configuration

In this patchset few bugs related to RSS are fixed and RSS table and
hash key configuration is added.

We also do increase max number of HW rings upto 8.

v2: removed extra arg check
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-07 12:49:10 -08:00
Dmitry Bogdanov 391637676f net: aquantia: add support of RSS configuration
Add support of configuration of RSS hash key and RSS indirection table.

Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-07 12:49:09 -08:00
Dmitry Bogdanov a8c69ca792 net: aquantia: fix initialization of RSS table
Now RSS indirection table is initialized before setting up the number of
hw queues, consequently the table may be filled by non existing queues.
This patch moves the initialization when the number of hw queues is
known.

Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-07 12:49:09 -08:00
Dmitry Bogdanov 71a963cfc5 net: aquantia: increase max number of hw queues
Increase the upper limit of the hw queues up to 8.
This makes RSS better on multiheaded cpus.

This is a maximum AQC hardware supports in one traffic class.

The actual value is still limited by a number of available cpu cores.

Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-07 12:49:09 -08:00
Dmitry Bogdanov 474fb1150d net: aquantia: fix RSS table and key sizes
Set RSS indirection table and RSS hash key sizes to their real size.

Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-07 12:49:09 -08:00
David S. Miller ef2df7fc11 Merge branch 'Pass-extack-to-NETDEV_PRE_UP'
Petr Machata says:

====================
Pass extack to NETDEV_PRE_UP

Drivers may need to validate configuration of a device that's about to
be upped. An example is mlxsw, which needs to check the configuration of
a VXLAN device attached to an offloaded bridge. Should the validation
fail, there's currently no way to communicate details of the failure to
the user, beyond an error number.

Therefore this patch set extends the NETDEV_PRE_UP event to include
extack, if available.

There are three vectors through which NETDEV_PRE_UP invocation can be
reached. The two major ones are dev_open() and dev_change_flags(), the
last is then __dev_change_flags().

In patch #1, the first access vector, dev_open() is addressed. An extack
parameter is added and all users converted to use it.

Before addressing the second vector, two preparatory patches propagate
extack argument to the proximity of the dev_change_flags() call in VRF
and IPVLAN drivers. That happens in patches #2 and #3. Then in patch #4,
dev_change_flags() is treated similarly to dev_open().

Likewise in patch #5, __dev_change_flags() is extended.

Then in patches #6 and #7, the extack is finally propagated all the way
to the point where the notification is emitted.

This change allows particularly mlxsw (which already has code to
leverage extack if available) to communicate to the user error messages
regarding VXLAN configuration. In patch #8, add a test case that
exercises this code and checks that an error message is propagated.

For example:

	local 192.0.2.17 remote 192.0.2.18 \
	dstport 4789 nolearning noudpcsum tos inherit ttl 100
	local 192.0.2.17 remote 192.0.2.18 \
	dstport 4789 nolearning noudpcsum tos inherit ttl 100
Error: mlxsw_spectrum: Conflicting NVE tunnels configuration.

v2:
- Add David Ahern's tags.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:07 -08:00
Petr Machata 1ba1daed90 selftests: mlxsw: Add a new test extack.sh
Add a testsuite dedicated to testing extack propagation and related
functionality.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:07 -08:00
Petr Machata 40c900aa1f net: core: dev: Attach extack to NETDEV_PRE_UP
Drivers may need to validate configuration of a device that's about to
be upped. Should the validation fail, there's currently no way to
communicate details of the failure to the user, beyond an error number.

To mend that, change __dev_open() to take an extack argument and pass it
from __dev_change_flags() and dev_open(), where it was propagated in the
previous patches.

Change __dev_open() to call call_netdevice_notifiers_extack() so that
the passed-in extack is attached to the NETDEV_PRE_UP notifier.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:07 -08:00
Petr Machata 2637260534 net: core: dev: Add call_netdevice_notifiers_extack()
In order to propagate extack through NETDEV_PRE_UP, add a new function
call_netdevice_notifiers_extack() that primes the extack field of the
notifier info. Convert call_netdevice_notifiers() to a simple wrapper
around the new function that passes NULL for extack.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:07 -08:00
Petr Machata 6d0403216d net: core: dev: Add extack argument to __dev_change_flags()
In order to pass extack together with NETDEV_PRE_UP notifications, it's
necessary to route the extack to __dev_open() from diverse (possibly
indirect) callers. The last missing API is __dev_change_flags().

Therefore extend __dev_change_flags() with and extra extack argument and
update the two existing users.

Since the function declaration line is changed anyway, name the struct
net_device argument to placate checkpatch.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:07 -08:00
Petr Machata 567c5e13be net: core: dev: Add extack argument to dev_change_flags()
In order to pass extack together with NETDEV_PRE_UP notifications, it's
necessary to route the extack to __dev_open() from diverse (possibly
indirect) callers. One prominent API through which the notification is
invoked is dev_change_flags().

Therefore extend dev_change_flags() with and extra extack argument and
update all users. Most of the calls end up just encoding NULL, but
several sites (VLAN, ipvlan, VRF, rtnetlink) do have extack available.

Since the function declaration line is changed anyway, name the other
function arguments to placate checkpatch.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:07 -08:00
Petr Machata cf7686a012 net: ipvlan: ipvlan_set_port_mode(): Add an extack argument
A follow-up patch will extend dev_change_flags() with an extack
argument. Extend ipvlan_set_port_mode() to have that argument available
for the conversion.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:06 -08:00
Petr Machata dc1aea1e08 net: vrf: cycle_netdev(): Add an extack argument
A follow-up patch will extend dev_change_flags() with an extack
argument. Extend cycle_netdev() to have that argument available for the
conversion.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:06 -08:00
Petr Machata 00f54e6892 net: core: dev: Add extack argument to dev_open()
In order to pass extack together with NETDEV_PRE_UP notifications, it's
necessary to route the extack to __dev_open() from diverse (possibly
indirect) callers. One prominent API through which the notification is
invoked is dev_open().

Therefore extend dev_open() with and extra extack argument and update
all users. Most of the calls end up just encoding NULL, but bond and
team drivers have the extack readily available.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 13:26:06 -08:00
Pedro Tammela fdb8b29867 tcp: fix code style in tcp_recvmsg()
2 goto labels are indented with a tab. remove the tabs and
keep the code style consistent.

Signed-off-by: Pedro Tammela <pctammela@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 12:19:47 -08:00
David S. Miller d6a4b570d3 Merge branch 'dsa-mtu'
Andrew Lunn says:

====================
Adjust MTU of DSA master interface

DSA makes use of additional headers to direct a frame in/out of a
specific port of the switch. When the slave interfaces uses an MTU of
1500, the master interface can be asked to handle frames with an MTU
of 1504, or 1508 bytes. Some Ethernet interfaces won't
transmit/receive frames which are bigger than their MTU.

Automate the increasing of the MTU on the master interface, by adding
to each tagging driver how much overhead they need, and then calling
dev_set_mtu() of the master interface to increase its MTU as needed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 12:18:17 -08:00
Andrew Lunn dc0fe7d47f net: dsa: Set the master device's MTU to account for DSA overheads
DSA tagging of frames sent over the master interface to the switch
increases the size of the frame. Such frames can then be bigger than
the normal MTU of the master interface, and it may drop them. Use the
overhead information from the tagger to set the MTU of the master
device to include this overhead.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 12:18:17 -08:00
Andrew Lunn a5dd308778 net: dsa: Add overhead to tag protocol ops.
Each DSA tag protocol needs to add additional headers to the Ethernet
frame in order to direct it towards a specific switch egress port. It
must also remove the head from a frame received from a
switch. Indicate the maximum size of these headers in the tag protocol
ops structure, so the core can take these overheads into account.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 12:18:16 -08:00
Li RongQing 5c327f673d tun: remove unnecessary check in tun_flow_update
caller has guaranted that rxhash is not zero

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 12:15:53 -08:00
Li RongQing 83b1bc122c tun: align write-heavy flow entry members to a cache line
tun flow entry 'updated' fields are written when receive
every packet. Thus if a flow is receiving packets from a
particular flow entry, it'll cause false-sharing with
all the other who has looked it up, so move it in its own
cache line

and update 'queue_index' and 'update' field only when
they are changed to reduce the cache false-sharing.

Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Wang Li <wangli39@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-06 12:15:27 -08:00
David Ahern 7a35a50df5 neighbor: Add extack messages for add and delete commands
Add extack messages for failures in neigh_add and neigh_delete.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 20:53:19 -08:00
Hoang Le f5d6c3e5a3 tipc: fix node keep alive interval calculation
When setting LINK tolerance, node timer interval will be calculated
base on the LINK with lowest tolerance.

But when calculated, the old node timer interval only updated if current
setting value (tolerance/4) less than old ones regardless of number of
links as well as links' lowest tolerance value.

This caused to two cases missing if tolerance changed as following:
Case 1:
1.1/ There is one link (L1) available in the system
1.2/ Set L1's tolerance from 1500ms => lower (i.e 500ms)
1.3/ Then, fallback to default (1500ms) or higher (i.e 2000ms)

Expected:
    node timer interval is 1500/4=375ms after 1.3

Result:
node timer interval will not being updated after changing tolerance at 1.3
since its value 1500/4=375ms is not less than 500/4=125ms at 1.2.

Case 2:
2.1/ There are two links (L1, L2) available in the system
2.2/ L1 and L2 tolerance value are 2000ms as initial
2.3/ Set L2's tolerance from 2000ms => lower 1500ms
2.4/ Disable link L2 (bring down its bearer)

Expected:
    node timer interval is 2000ms/4=500ms after 2.4

Result:
node timer interval will not being updated after disabling L2 since
its value 2000ms/4=500ms is still not less than 1500/4=375ms at 2.3
although L2 is already not available in the system.

To fix this, we start the node interval calculation by initializing it to
a value larger than any conceivable calculated value. This way, the link
with the lowest tolerance will always determine the calculated value.

Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 20:52:31 -08:00
Rob Herring bf5849f15a net: Use of_node_name_eq for node name comparisons
Convert string compares of DT node names to use of_node_name_eq helper
instead. This removes direct access to the node name pointer.

For instances using of_node_cmp, this has the side effect of now using
case sensitive comparisons. This should not matter for any FDT based
system which all of these are.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Claudiu Manoil <claudiu.manoil@nxp.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Wingman Kwok <w-kwok2@ti.com>
Cc: Murali Karicheri <m-karicheri2@ti.com>
Cc: netdev@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 20:51:05 -08:00
Peter Oskolkov d66280b12b net: netem: use a list in addition to rbtree
When testing high-bandwidth TCP streams with large windows,
high latency, and low jitter, netem consumes a lot of CPU cycles
doing rbtree rebalancing.

This patch uses a linear list/queue in addition to the rbtree:
if an incoming packet is past the tail of the linear queue, it is
added there, otherwise it is inserted into the rbtree.

Without this patch, perf shows netem_enqueue, netem_dequeue,
and rb_* functions among the top offenders. With this patch,
only netem_enqueue is noticeable if jitter is low/absent.

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 20:18:41 -08:00
David S. Miller 932c441707 Merge branch 'net-bridge-convert-multicast-to-generic-rhashtable'
Nikolay Aleksandrov says:

====================
net: bridge: convert multicast to generic rhashtable

The current bridge multicast code uses a custom rhashtable
implementation which predates the generic rhashtable API. Patch 01
converts it to use the generic kernel rhashtable which simplifies the
code a lot and removes duplicated functionality. The convert also makes
hash_elasticity obsolete as the generic rhashtable already has such
checks and has a fixed elasticity of RHT_ELASTICITY (16 currently) so we
emit a warning whenever elasticity is set and return RHT_ELASTICITY when
read (patch 03). Patch 02 converts the multicast code to use non-bh RCU
flavor as it was mixing bh and non-bh. Since now we have the generic
rhashtable which autoshrinks we can be more liberal with the default
hash maximum so patch 04 increases it to 4096 and moves it to a define in
br_private.h.

v3: add non-rcu br_mdb_get variant and use it where we have
    multicast_lock, drop special hash_max handling and just set it where
    needed and use non-bh RCU consistently (patch 02, new)
v2: send the latest version of the set which handles when IGMP snooping
    is not defined, changes are in patch 01
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 17:01:51 -08:00
Nikolay Aleksandrov d08c6bc08f net: bridge: increase multicast's default maximum number of entries
bridge's default hash_max was 512 which is rather conservative, now that
we're using the generic rhashtable API which autoshrinks let's increase
it to 4096 and move it to a define in br_private.h.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 17:01:51 -08:00
Nikolay Aleksandrov cf332bca56 net: bridge: mark hash_elasticity as obsolete
Now that the bridge multicast uses the generic rhashtable interface we
can drop the hash_elasticity option as that is already done for us and
it's hardcoded to a maximum of RHT_ELASTICITY (16 currently). Add a
warning about the obsolete option when the hash_elasticity is set.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 17:01:51 -08:00
Nikolay Aleksandrov 4329596cb1 net: bridge: multicast: use non-bh rcu flavor
The bridge multicast code has been using a mix of RCU and RCU-bh flavors
sometimes in questionable way. Since we've moved to rhashtable just use
non-bh RCU everywhere. In addition this simplifies freeing of objects
and allows us to remove some unnecessary callback functions.

v3: new patch

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 17:01:51 -08:00
Nikolay Aleksandrov 19e3a9c90c net: bridge: convert multicast to generic rhashtable
The bridge multicast code currently uses a custom resizable hashtable
which predates the generic rhashtable interface. It has many
shortcomings compared and duplicates functionality that is presently
available via the generic rhashtable, so this patch removes the custom
rhashtable implementation in favor of the kernel's generic rhashtable.
The hash maximum is kept and the rhashtable's size is used to do a loose
check if it's reached in which case we revert to the old behaviour and
disable further bridge multicast processing. Also now we can support any
hash maximum, doesn't need to be a power of 2.

v3: add non-rcu br_mdb_get variant and use it where multicast_lock is
    held to avoid RCU splat, drop hash_max function and just set it
    directly

v2: handle when IGMP snooping is undefined, add br_mdb_init/uninit
    placeholders

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 17:01:51 -08:00
David S. Miller ba5dfaff19 mlx5e-updates-2018-12-04
This series includes updates to mlx5e netdevice driver
 
 From Saeed, Remove trailing space of tx_pause ethtool stat
 From Gal, Cleanup unused defines
 From Aya, ethtool Support for configuring of RX hash fields
 From Tariq, Improve ethtool private-flags code structure
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Merge tag 'mlx5e-updates-2018-12-04' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5e-updates-2018-12-04

This series includes updates to mlx5e netdevice driver

From Saeed, Remove trailing space of tx_pause ethtool stat
From Gal, Cleanup unused defines
From Aya, ethtool Support for configuring of RX hash fields
From Tariq, Improve ethtool private-flags code structure
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:48:44 -08:00
David S. Miller 7127f2fece Merge branch 'u32-to-linkmode-fixes'
Andrew Lunn says:

====================
u32 to linkmode fixes

This patchset fixes issues found in the last patchset which converted
the phydev advertise etc, from a u32 to a linux bitmap. Most of the
issues are the result of clearing bits which should not of been
cleared. To make the API clearer, the idea from Heiner Kallweit was
used, with _mod_ to indicate the function modifies just the bits it
needs to, or _to_ to clear all bits and just set bit that need to be
set.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:26:16 -08:00
Andrew Lunn 9db299c736 net: phy: Fix ioctl handler when modifing MII_ADVERTISE
When the MII_ADVERTISE register is modified by the IOCTL handler,
phydev->advertising needs recalculating. Use the _mod_ variant of
mii_adv_to_linkmode_adv_t so that bits outside of the advertise
registers are not cleared.

Fixes: c0ec3c2736 ("net: phy: Convert u32 phydev->lp_advertising to linkmode")
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:26:16 -08:00
Andrew Lunn 6dbd0090f9 net: mii: mii_lpa_mod_linkmode_lpa_t: Make use of linkmode_mod_bit helper
Replace the if else code structure with a call to the helper
linkmode_mod_bit.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:26:16 -08:00
Andrew Lunn d3351931a3 net: mii: Add mii_lpa_mod_linkmode_lpa_t
Add a _mod_ variant of mii_lpa_to_linkmode_lpa_t. Use this to fix the
genphy_read_status() where the 1G link partner features are getting
lost.

Fixes: c0ec3c2736 ("net: phy: Convert u32 phydev->lp_advertising to linkmode")
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:26:16 -08:00
Andrew Lunn ab9cb729ab phy: marvell: Rename mii_lpa_to_linkmode_lpa_t
Rename mii_lpa_to_linkmode_lpa_t to mii_lpa_mod_linkmode_lpa_t to
indicate it modifies the passed linkmode bitmap, without clearing any
other bits.

Also, ensure bit are clear which the lpa indicates should not be set.

Fixes: c0ec3c2736 ("net: phy: Convert u32 phydev->lp_advertising to linkmode")
Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:26:16 -08:00
Andrew Lunn 78a24df370 net: mii: Rename mii_stat1000_to_linkmode_lpa_t
Rename mii_stat1000_to_linkmode_lpa_t to
mii_stat1000_mod_linkmode_lpa_t to indicate it modifies the passed
linkmode bitmap, without clearing any other bits.

Add a helper to set/clear bits in a linkmode.

Use this helper to ensure bit are clear which the stat1000 indicates
should not be set.

Fixes: c0ec3c2736 ("net: phy: Convert u32 phydev->lp_advertising to linkmode")
Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:26:16 -08:00
Andrew Lunn 5f15eed245 net: mii: Fix autoneg in mii_lpa_to_linkmode_lpa_t()
mii_adv_to_linkmode_adv_t() clears all bits before setting it needs to
set. This means the freshly set Autoneg gets cleared.

Change the order, and add comments about it clearing the old content
of the bitmap.

Fixes: c0ec3c2736 ("net: phy: Convert u32 phydev->lp_advertising to linkmode")
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 16:26:16 -08:00
Tariq Toukan 8ff57c18e9 net/mlx5e: Improve ethtool private-flags code structure
Refactor the code of private-flags setter.
Replace consecutive calls to mlx5e_handle_pflag with a loop
that uses a preset set of parameters.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-05 16:00:37 -08:00
Aya Levin 756c41603a net/mlx5e: ethtool, Support user configuration for RX hash fields
Enable user configuration of RX hash fields that are used for traffic
spreading into RX queues. User can change built-in RSS (Receive Side
Scaling) profiles on the following traffic types: UDP4, UDP6, TCP4 and
TCP6.  This configuration effects both outer and inner headers.  Added
support for ethtool commands: ETHTOOL_SRXFH and ETHTOOL_GRXFH.

Command example respectively:
$ethtool -N eth1 rx-flow-hash tcp4 sdfn
$ethtool -n eth1 rx-flow-hash tcpp4
IP SA
IP DA
L4 bytes 0 & 1 [TCP/UDP src port]
L4 bytes 2 & 3 [TCP/UDP dst port]

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-05 16:00:37 -08:00
Aya Levin bbeb53b8b2 net/mlx5e: Move RSS params to a dedicated struct
Remove RSS params from params struct under channels, and introduce
a new struct with RSS configuration params under priv struct. There is
no functional change here.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-05 16:00:36 -08:00
Aya Levin d930ac796f net/mlx5e: Refactor TIR configuration function
Refactor mlx5e_build_indir_tir_ctx_hash for better code re-use. TIR
stands for Transport Interface Receive, which is responsible for all
transport related operations on the receive side. Added a
static array with TIR default configuration values. This separates
configuration values from command setting, which is needed for
downstream patch.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-05 16:00:33 -08:00
Jakub Kicinski b255e500c8 net: documentation: build a directory structure for drivers
Documentation/networking/ is full of cryptically named files with
driver documentation.  This makes finding interesting information
at a glance really hard.  Move all those files into a directory
called device_drivers (since not all drivers are for device) and
fix up references.

RFC v0.1 -> RFC v1:
 - also add .txt suffix to the files which are missing it (Quentin)

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: David Ahern <dsahern@gmail.com>
Acked-by: Henrik Austad <henrik@austad.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 11:30:06 -08:00
Eric Dumazet a74f0fa082 tcp: reduce POLLOUT events caused by TCP_NOTSENT_LOWAT
TCP_NOTSENT_LOWAT socket option or sysctl was added in linux-3.12
as a step to enable bigger tcp sndbuf limits.

It works reasonably well, but the following happens :

Once the limit is reached, TCP stack generates
an [E]POLLOUT event for every incoming ACK packet.

This causes a high number of context switches.

This patch implements the strategy David Miller added
in sock_def_write_space() :

 - If TCP socket has a notsent_lowat constraint of X bytes,
   allow sendmsg() to fill up to X bytes, but send [E]POLLOUT
   only if number of notsent bytes is below X/2

This considerably reduces TCP_NOTSENT_LOWAT overhead,
while allowing to keep the pipe full.

Tested:
 100 ms RTT netem testbed between A and B, 100 concurrent TCP_STREAM

A:/# cat /proc/sys/net/ipv4/tcp_wmem
4096	262144	64000000
A:/# super_netperf 100 -H B -l 1000 -- -K bbr &

A:/# grep TCP /proc/net/sockstat
TCP: inuse 203 orphan 0 tw 19 alloc 414 mem 1364904 # This is about 54 MB of memory per flow :/

A:/# vmstat 5 5
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
 0  0      0 256220672  13532 694976    0    0    10     0   28   14  0  1 99  0  0
 2  0      0 256320016  13532 698480    0    0   512     0 715901 5927  0 10 90  0  0
 0  0      0 256197232  13532 700992    0    0   735    13 771161 5849  0 11 89  0  0
 1  0      0 256233824  13532 703320    0    0   512    23 719650 6635  0 11 89  0  0
 2  0      0 256226880  13532 705780    0    0   642     4 775650 6009  0 12 88  0  0

A:/# echo 2097152 >/proc/sys/net/ipv4/tcp_notsent_lowat

A:/# grep TCP /proc/net/sockstat
TCP: inuse 203 orphan 0 tw 19 alloc 414 mem 86411 # 3.5 MB per flow

A:/# vmstat 5 5  # check that context switches have not inflated too much.
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
 2  0      0 260386512  13592 662148    0    0    10     0   17   14  0  1 99  0  0
 0  0      0 260519680  13592 604184    0    0   512    13 726843 12424  0 10 90  0  0
 1  1      0 260435424  13592 598360    0    0   512    25 764645 12925  0 10 90  0  0
 1  0      0 260855392  13592 578380    0    0   512     7 722943 13624  0 11 88  0  0
 1  0      0 260445008  13592 601176    0    0   614    34 772288 14317  0 10 90  0  0

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-04 21:21:18 -08:00
David S. Miller 4dc88ce672 Merge branch 'act_tunnel_key-support-key-less-tunnels'
Or Gerlitz says:

====================
net/sched: act_tunnel_key: support key-less tunnels

This short series from Adi Nissim allows to support key-less tunnels
by the tc tunnel key actions, which is needed for some GRE use-cases.

changes from V0:
 - addresses build warning spotted by kbuild, make sure to always init
   to zero the tunnel key
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-04 20:53:38 -08:00
Adi Nissim 1c25324caf net/sched: act_tunnel_key: Don't dump dst port if it wasn't set
It's possible to set a tunnel without a destination port. However,
on dump(), a zero dst port is returned to user space even if it was not
set, fix that.

Note that so far it wasn't required, b/c key less tunnels were not
supported and the UDP tunnels do require destination port.

Signed-off-by: Adi Nissim <adin@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-04 20:53:37 -08:00
Adi Nissim 80ef0f22ce net/sched: act_tunnel_key: Allow key-less tunnels
Allow setting a tunnel without a tunnel key. This is required for
tunneling protocols, such as GRE, that define the key as an optional
field.

Signed-off-by: Adi Nissim <adin@mellanox.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-04 20:53:37 -08:00
Colin Ian King d1ecf8a660 qed: fix spelling mistake "Dispalying" -> "Displaying"
There is a spelling mistake in a DP_NOTICE message, fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-04 20:25:59 -08:00
Aya Levin 080d1b17fb net/mlx5e: Move modify tirs hash functionality
Move modify tirs hash functionality (mlx5e_modify_tirs_hash) from
en_ethtool.c to en_main.c. This allows future use of this fuctionality
from en_fs_ethtool.c, while keeping current convention: en_ethtool.c
doesn't have an API.  There is no functional change here.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-04 18:20:01 -08:00
Gal Pressman 3054383109 net/mlx5e: Cleanup unused defines
Remove couple of defines that are no longer used.

Signed-off-by: Gal Pressman <pressmangal@gmail.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-04 18:20:00 -08:00