Commit Graph

60305 Commits

Author SHA1 Message Date
Ashish Shah
4b28cdba48 i40e: set context to use VSI RSS LUT for SR-IOV
For the SR-IOV VSIs, when the queue filtering section is valid,
the RSS LUT needs to be set to use the VSI specific lookup table
(otherwise it will use the PF RSS LUT table).

Change-ID: Ia9377cc818078238a75c3bdeade1b593a91b3480
Signed-off-by: Ashish Shah <ashish.n.shah@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-14 00:00:24 -07:00
Akeem G Abodunrin
73df8c9e3e i40e: Correct UDP packet header for non_tunnel-ipv6
This patch corrects Rx ptype payload layer for non_tunneled ipv6. It
should be layer 4 for UDP, instead of layer 3.

Change-ID: I9382e4458ab3c4e58f6d2e9f195d5d4ee513805e
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 23:56:13 -07:00
Jacob Keller
c420815d12 i40e: change Rx hang message into a WARN_ONCE
Use WARN_ONCE in order to highlight the issue, but don't display
a warning every time. The user should be able to see the ethtool counter
we created if necessary to see how often it is occurring.

Change-ID: I40c4ea159819b64a7d33b7f5716749089791533a
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 23:44:59 -07:00
Catherine Sullivan
06566e5dd4 i40e: Refactor ethtool get_settings
Previously we were only looking at the FW supported PHY types if link
was down, because we want to be more specific when link is up. This
refactor changes this. When link is down, we still rely on the FW
supported PHY types, but when link is up, we select the possible
supported link modes from what we know about the current PHY type, and
AND that with the FW supported PHY types.

Change-ID: Ice5dad83f2a17932b0b8b59f07439696ad6aa013
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 23:32:15 -07:00
Mitch Williams
eee4172abc i40e: lie to the VF
If an untrusted VF attempts to configure promiscuous mode, log a message
pointing out its naughty behavior. But then, instead of returning an
error to the offender, just lie to it and say everything's OK. It will
continue on its way, thinking it's in promiscuous mode, but receiving no
packets except its own.

Change-ID: I63369215b1720f3c531eedfc06af86ff8c0e3dc8
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 23:23:19 -07:00
Anjali Singhai Jain
b556989230 i40e: Add vf-true-promisc-support priv flag
This patch adds priv-flag knob to configure global true promisc
support. With this patch the user can decide the flavor of
promiscuous that the VFs will see when promiscuous mode is enabled
on the interface. Since this a global setting for the whole device,
the priv-flag is exposed only on the first PF of the device.

The default is true promisc support is off, which means the promisc
mode for the VF will be limited/defport mode.

For the PF, we still will be in limited promisc unless in MFP mode
irrespective of the flavor picked through this knob.

Usage:
On PF0
ethtool --show-priv-flags p261p1
Private flags for p261p1:
MFP                    : off
LinkPolling            : off
flow-director-atr      : on
veb-stats              : off
hw-atr-eviction        : off
vf-true-promisc-support: off

to enable setting true promisc
ethtool --set-priv-flags p261p1 vf-true-promisc-support on

At this point if the VF is set to trust and promisc is enabled
on the VF through
ip link set ... promisc on
The VF/VFs will be able to see ALL ingress traffic

Change-Id: I8fac4b6eb1af9ca77b5376b79c50bdce5055bd94
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 22:48:46 -07:00
Shannon Nelson
f3d5849756 i40e: Implement the API function for aq_set_switch_config
Add the support code for calling the AdminQ API call aq_set_switch_config

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 22:37:02 -07:00
Anjali Singhai Jain
f42a5c74da i40e: Add allmulti support for the VF
This patch enables a feature to enable/disable all multicast
for a trusted VF.

Change-Id: I926eba7f8850c8d40f8ad7e08bbe4056bbd3985f
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 22:31:42 -07:00
Kevin Scott
06c0e39bbe i40e: Add support for disabling all link and change bits needed for PHY interactions
Add flag to tell firmware to disable link on all ports.

This patch changes the bits set for telling firmware the PHY needs
to be modified by driver.  Without this patch, the setting will only
set that mode for the current port on the device.  Because the
MDIO interface is common for the copper device. The command needs to
set the mode for all ports.

Change-ID: I8baa7da91d384291ac95b41ae1a516604f8eb67f
Signed-off-by: Kevin Scott <kevin.c.scott@intel.com>
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 21:36:59 -07:00
Jacob Keller
aa524b66c5 e1000e: don't modify SYSTIM registers during SIOCSHWTSTAMP ioctl
The e1000e_config_hwtstamp function was incorrectly resetting the SYSTIM
registers every time the ioctl was being run. If you happened to be
running ptp4l and lost the PTP connect (removing cable, or blocking the
UDP traffic for example), then ptp4l will eventually perform a restart
which involves re-requesting timestamp settings. In e1000e this has the
unfortunate and incorrect result of resetting SYSTIME to the kernel
time. Since kernel time is usually in UTC, and PTP time is in TAI, this
results in the leap second being re-applied.

Fix this by extracting the SYSTIME reset out into its own function,
e1000e_ptp_reset, which we call during reset to restore the hardware
registers. This function will (a) restart the timecounter based on the
new system time, (b) restore the previous PPB setting, and (c) restore
the previous hwtstamp settings.

In order to perform (b), I had to modify the adjfreq ptp function
pointer to store the old delta each time it is called. This also has the
side effect of restoring the correct base timinca register correctly.
The driver does not need to explicitly zero the ptp_delta variable since
the entire adapter structure comes zero-initialized.

Reported-by: Brian Walsh <brian@walsh.ws>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Brian Walsh <brian@walsh.ws>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 15:30:44 -07:00
Alexander Duyck
e10715d3e9 igb/igbvf: Add support for GSO partial
This patch adds support for partial GSO segmentation in the case of
tunnels.  Specifically with this change the driver an perform segmentation
as long as the frame either has IPv6 inner headers, or we are allowed to
mangle the IP IDs on the inner header.  This is needed because we will not
be modifying any fields from the start of the start of the outer transport
header to the start of the inner transport header as we are treating them
like they are just a block of IP options.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 15:26:37 -07:00
Jacob Keller
942c711206 e1000e: mark shifted values as unsigned
The E1000_ICH_NVM_SIG_MASK value is shifted, out to the 31st bit, which
is the signed bit for signed constants. Mark these values as unsigned to
prevent compiler warnings and issues on platforms which a different
signed bit implementation.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 15:19:05 -07:00
Jacob Keller
18dd239207 e1000e: use BIT() macro for bit defines
This prevents signed bitshift issues when the shift would overwrite the
signed bit, and prevents making this mistake in the future when copying
and modifying code.

Use GENMASK or the unsigned postfix for cases which aren't suitable for
BIT() macro.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 15:15:36 -07:00
Jacob Keller
0ed2dbf4f4 igbvf: use BIT() macro instead of shifts
To prevent signed bitshift issues, and improve code readability, use the
BIT() macro. Also make use of GENMASK or the unsigned postfix where this
is more appropriate than BIT()

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 15:12:03 -07:00
Jacob Keller
12b28b4108 igbvf: remove unused variable and dead code
The variable rdlen is set but never used, and thus setting it is dead
code. Remove it.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 15:06:33 -07:00
Nathan Sullivan
3f544d2a4d igb: adjust PTP timestamps for Tx/Rx latency
Table 7-62 on page 338 of the i210 datasheet lists TX and RX latencies
for the various speeds the chip supports.  To give better PTP timestamp
accuracy, adjust the timestamps by the amounts Intel gives based on
current link speed.

Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 15:02:08 -07:00
Denys Vlasenko
ab507c9a54 e1000e: e1000e_cyclecounter_read(): do overflow check only if needed
SYSTIMH:SYSTIML registers are incremented by 24-bit value TIMINCA[23..0]

er32(SYSTIML) are probably moderately expensive (they are pci bus reads).
Can we avoid one of them? Yes, we can.

If the SYSTIML value we see is smaller than 0xff000000, the overflow
into SYSTIMH would require at least two increments.

We do two reads, er32(SYSTIML) and er32(SYSTIMH), in this order.

Even if one increment happens between them, the overflow into SYSTIMH
is impossible, and we can avoid doing another er32(SYSTIML) read
and overflow check.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 14:56:35 -07:00
Denys Vlasenko
a07fd74d5e e1000e: e1000e_cyclecounter_read(): fix er32(SYSTIML) overflow check
If two consecutive reads of the counter are the same, it is also
not an overflow.  "systimel_1 < systimel_2" should be
"systimel_1 <= systimel_2".

Before the patch, we could perform an *erroneous* correction:

Let's say that systimel_1 == systimel_2 == 0xffffffff.
"systimel_1 < systimel_2" is false, we think it's an overflow,
we read "systimeh = er32(SYSTIMH)" which meanwhile had incremented,
and use "(systimeh << 32) + systimel_2" value which is 2^32 too large.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: intel-wired-lan@lists.osuosl.org
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 14:52:31 -07:00
Denys Vlasenko
fb5277f2c2 e1000e: e1000e_cyclecounter_read(): incvalue is 32 bits, not 64
"incvalue" variable holds a result of "er32(TIMINCA) &
E1000_TIMINCA_INCVALUE_MASK" and used in "do_div(temp, incvalue)"
as a divisor.

Thus, "u64 incvalue" declaration is probably a mistake.
Even though it seems to be a harmless one, let's fix it.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 14:46:45 -07:00
Jacob Keller
8008f68cb8 igb: make igb_update_pf_vlvf static
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 14:39:59 -07:00
Jacob Keller
a51d8c217b igb: use BIT() macro or unsigned prefix
For bitshifts, we should make use of the BIT macro when possible, and
ensure that other bitshifts are marked as unsigned. This helps prevent
signed bitshift errors, and ensures similar style.

Make use of GENMASK and the unsigned postfix where BIT() isn't
appropriate.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 14:39:47 -07:00
Brian Walsh
847042a6a5 e1000e: Cleanup consistency in ret_val variable usage
Fixed the file to use a consistent ret_val for return value checking.

Signed-off-by: Brian Walsh <brian@walsh.ws>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 14:30:40 -07:00
Steve Shih
e11f303e3d e1000e: fix ethtool autoneg off for non-copper
This patch fixes the issues for disabling auto-negotiation and forcing
speed and duplex settings for the non-copper media.

For non-copper media, e1000_get_settings should return ETH_TP_MDI_INVALID for
eth_tp_mdix_ctrl instead of ETH_TP_MDI_AUTO so subsequent e1000_set_settings
call would not fail with -EOPNOTSUPP.

e1000_set_spd_dplx should not automatically turn autoneg back on for forced
1000 Mbps full duplex settings for non-copper media.

Cc: xe-kernel@external.cisco.com
Cc: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Steve Shih <sshih@cisco.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-05-13 14:23:37 -07:00
Fabio Estevam
f893a99e7e phy: micrel: Use MICREL_PHY_ID_MASK definition
Replace the hardcoded mask 0x00fffff0 with MICREL_PHY_ID_MASK for
better readability.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 16:55:33 -04:00
Pablo Neira
27ee441a43 gtp: put back reference to netns when not required anymore
This patch fixes a netns leak.

Fixes: 93edb8c7f9 ("gtp: reload GTPv1 header after pskb_may_pull()")
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 12:27:15 -04:00
Yuval Mintz
831bfb0e88 qed*: Tx-switching configuration
Device should be configured by default to VEB once VFs are active.
This changes the configuration of both PFs' and VFs' vports into enabling
tx-switching once sriov is enabled.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:08 -04:00
Yuval Mintz
73390ac9d8 qed*: support ndo_get_vf_config
Allows the user to view the VF configuration by observing the PF's
device.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:08 -04:00
Yuval Mintz
6ddc760825 qed*: IOV support spoof-checking
Add support in `ndo_set_vf_spoofchk' for allowing PF control over
its VF spoof-checking configuration.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:08 -04:00
Yuval Mintz
733def6a04 qed*: IOV link control
This adds support in 2 ndo that allow PF to tweak the VF's view of the
link - `ndo_set_vf_link_state' to allow it a view independent of the PF's,
and `ndo_set_vf_rate' which would allow the PF to limit the VF speed.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:08 -04:00
Yuval Mintz
eff169608c qed*: Support forced MAC
Allows the PF to enforce the VF's mac.
i.e., by using `ip link ... vf <x> mac <value>'.

While a MAC is forced, PF would prevent the VF from configuring any other
MAC.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:08 -04:00
Yuval Mintz
08feecd7fc qed*: Support PVID configuration
This adds support for PF control over the VF vlan configuration.
I.e., `ip link ... vf <x> vlan <vid>' should now be supported.

 1. <vid> != 0 => VF receives [unknowingly] only traffic tagged by
    <vid> and tags all outgoing traffic sent by VF with <vid>.
 2. <vid> == 0 ==> Remove the pvid configuration, reverting to previous.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
fefb0202cc qede: Add VF support
Adding a PCI callback for `sriov_configure' and a new PCI device id for
the VF [+ Some minor changes to accomodate differences between PF and VF
at the qede].
Following this, VF creation should be possible and the entire subset of
existing PF functionality that's allow to VFs should be supported.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
17b235c145 qed: Align TLVs
As the VF infrastructure is supposed to offer backward/forward
compatibility, the various types associated with VF<->PF communication
should be aligned across all various platforms that support IOV
on our family of adapters.

This adds a couple of currently missing values, specifically aligning
the enum for the various TLVs possible in the communication between them.

It then adds the PF implementation for some of those missing VF requests.
This support isn't really necessary for the Linux VF as those VFs aren't
requiring it [at least today], but are required by VFs running on other
OSes. LRO is an example of one such configuration.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
36558c3d77 qed: Bulletin and Link
Up to this point, VF and PF communication always originates from VF.
As a result, VF cannot be notified of any async changes, and specifically
cannot be informed of the current link state.

This introduces the bulletin board, the mechanism through which the PF
is going to communicate async notifications back to the VF. basically,
it's a well-defined structure agreed by both PF and VF which the VF would
continuously poll and into which the PF would DMA messages when needed.
[Bulletin board is actually allocated and communicated in previous patches
but never before used]

Based on the bulletin infrastructure, the VF can query its link status
and receive said async carrier changes.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
dacd88d6f6 qed: IOV l2 functionality
This adds sufficient changes to allow VFs l2-configuration flows to work.

While the fastpath of the VF and the PF are meant to be exactly the same,
the configuration of the VF is done by the PF.
This diverges all VF-related configuration flows that originate from a VF,
making them pass through the VF->PF channel and adding sufficient logic
on the PF side to support them.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
0b55e27d56 qed: IOV configure and FLR
While previous patches have already added the necessary logic to probe
VFs as well as enabling them in the HW, this patch adds the ability to
support VF FLR & SRIOV disable.

It then wraps both flows together into the first IOV callback to be
provided to the protocol driver - `configure'. This would later to be used
to enable and disable SRIOV in the adapter.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
1408cc1fa4 qed: Introduce VFs
This adds the qed VFs for the first time -
The vfs are limited functions, with a very different PCI bar structure
[when compared with PFs] to better impose the related security demands
associated with them.

This patch includes the logic neccesary to allow VFs to successfully probe
[without actually adding the ability to enable iov].
This includes diverging all the flows that would occur as part of the pci
probe of the driver, preventing VF from accessing registers/memories it
can't and instead utilize the VF->PF channel to query the PF for needed
information.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
37bff2b9c6 qed: Add VF->PF channel infrastructure
Communication between VF and PF is based on a dedicated HW channel;
VF will prepare a messge, and by signaling the HW the PF would get a
notification of that message existance. The PF would then copy the
message, process it and DMA an answer back to the VF as a response.

The messages themselves are TLV-based - allowing easier backward/forward
compatibility.

This patch adds the infrastructure of the channel on the PF side -
starting with the arrival of the notification and ending with DMAing
the response back to the VF.

It also adds a dummy-response as reference, as it only lays the
groundwork of the communication; it doesn't really add support of any
actual messages.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:07 -04:00
Yuval Mintz
32a47e72c9 qed: Add CONFIG_QED_SRIOV
Add support for a new Kconfig option for qed* driver which would allow
[eventually] the support in VFs.

This patch adds the necessary logic in the PF to learn about the possible
VFs it will have to support [Based on PCI configuration space and HW],
and prepare a database with an entry per-VF as infrastructure for future
interaction with said VFs.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-12 00:04:06 -04:00
Saeed Mahameed
b797a684b0 net/mlx5e: Enable CQE compression when PCI is slower than link
We turn the feature ON, only for servers with PCI BW < MAX LINK BW, as it
helps reducing PCI pressure on weak PCI slots, but it adds some software
overhead.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:42:39 -04:00
Tariq Toukan
d9d9f156f3 net/mlx5e: Expand WQE stride when CQE compression is enabled
Make the MPWQE/Striding RQ default configuration dynamic and not
statically set at compile time.  Now at driver load we set
stride size and num strides dynamically.

By default we use same values as before, but when CQE compression
is enabled, we set larger stride size to benefit from CQE
compression for larger packets.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:42:39 -04:00
Tariq Toukan
7219ab34f1 net/mlx5e: CQE compression
CQE compression feature is meant to save PCIe bandwidth by
compressing few CQEs into smaller amount of bytes on PCIe.
CQE compression can be selectively enabled per CQ.  By default
is disabled for now and will be enabled later on.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:42:39 -04:00
Andrew Lunn
f8cd8753de dsa: mv88e6xxx: Handle eeprom-length property
A switch can export an attached EEPROM using the standard ethtool API.
However the switch itself cannot determine the size of the EEPROM, and
multiple sizes are allowed. Thus a device tree property is supported
to indicate the length of the EEPROM. Parse this property during
device probe, and implement a callback function to retrieve it.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:36:29 -04:00
Andrew Lunn
ff04955c2f dsa: Rename switch chip data to cd
The dsa_switch structure contains a dsa_chip_data member called pd.
However in the rest of the code, pd is used for dsa_platform_data.
This is confusing. Rename it cd, which is already often used in dsa.c
and slave.c for this data type.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:36:28 -04:00
Andrew Lunn
c33063d6a0 dsa: Remove master_dev from switch structure
The switch drivers only use the master_dev member for dev_info()
messages.  Now that the device is passed to the old style probe, and
new style drivers are probed as true linux drivers, this is no longer
needed.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:36:28 -04:00
Andrew Lunn
52638f71fc dsa: Move gpio reset into switch driver
Resetting the switch is something the driver does, not the framework.
So move the parsing of this property into the driver.

There are no in kernel users of this property, so moving it does not
break anything. There is however a board which will make use of this
property making its way into the kernel.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:36:28 -04:00
Andrew Lunn
14c7b3c387 dsa: Add mdio device support to Marvell switches
Allow Marvell switches to be mdio devices. Currently the driver just
allocate the private structure and detects what device is on the
bus. Later patches will make them register with the DSA framework.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:36:28 -04:00
Andrew Lunn
fcdce7d075 dsa: mv88e6xxx: Rename probe function to fit the normal pattern
All other DSA drivers use _drv_ in there DSA probe function name, thus
allowing for a true linux driver probe function to use the
conventional name. Make mv88e6xxx fit this pattern.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:36:28 -04:00
Andrew Lunn
b681957ad4 dsa: mv88e6xxx: Initialise the mutex as soon as it is created
By initialising immediately it, we don't run the danger of using it
before it is initialised.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:36:28 -04:00
Vivien Didelot
cb9b9020fc net: dsa: mv88e6xxx: add STU capability
Some switch models have a STU (per VLAN port state database). Add a new
capability flag to switches info, instead of checking their family.

Also if the 6165 family has an STU, it must have a VTU, so add the
MV88E6XXX_FLAG_VTU to its family flags.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11 19:34:23 -04:00