openwrt/staging/blogic.git
8 years agonfp: replace num_irqs with max_r_vecs
Jakub Kicinski [Mon, 31 Oct 2016 20:43:21 +0000 (20:43 +0000)]
nfp: replace num_irqs with max_r_vecs

num_irqs is not used anywhere, replace it with max_r_vecs which holds
number of allocated RX/TX vectors and is going to be useful soon.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: remove nfp_net_irqs_wanted()
Jakub Kicinski [Mon, 31 Oct 2016 20:43:20 +0000 (20:43 +0000)]
nfp: remove nfp_net_irqs_wanted()

nfp_net_irqs_wanted() doesn't really encapsulate much logic,
remove it and inline the calculations.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: use unsigned int for vector/ring counts
Jakub Kicinski [Mon, 31 Oct 2016 20:43:19 +0000 (20:43 +0000)]
nfp: use unsigned int for vector/ring counts

Use unsigned int consistently for vector/ring counts.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: create separate define for max number of vectors
Jakub Kicinski [Mon, 31 Oct 2016 20:43:18 +0000 (20:43 +0000)]
nfp: create separate define for max number of vectors

We are currently using define for max TX rings to allocate IRQ
vectors.  It's OK since the max number of rings for TX and RX
are currently the same, but lets make the code nicer by taking
max of the two.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: use AND instead of modulo to get ring indexes
Jakub Kicinski [Mon, 31 Oct 2016 20:43:17 +0000 (20:43 +0000)]
nfp: use AND instead of modulo to get ring indexes

We already force ring sizes to be power of 2 so replace
modulo operations with AND (size - 1) in index calculations.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: add separate buffer allocation function for napi
Jakub Kicinski [Mon, 31 Oct 2016 20:43:16 +0000 (20:43 +0000)]
nfp: add separate buffer allocation function for napi

Introduce a separate buffer allocation function to be called
from NAPI.  We can make assumptions about the context and
buffer size.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: use alloc_frag() and build_skb()
Jakub Kicinski [Mon, 31 Oct 2016 20:43:15 +0000 (20:43 +0000)]
nfp: use alloc_frag() and build_skb()

Speed up RX processing by moving to the alloc_frag()/build_skb()
paradigm.  Since we're no longer mapping the entire buffer for
DMA add helpers which take care of calculating offsets and
lengths.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: add buffer drop/recycle helper for RX
Jakub Kicinski [Mon, 31 Oct 2016 20:43:14 +0000 (20:43 +0000)]
nfp: add buffer drop/recycle helper for RX

nfp_net_rx() is quite long already and about to get longer.
Move buffer drop/recycle to a helper.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: centralize the buffer size calculation
Jakub Kicinski [Mon, 31 Oct 2016 20:43:13 +0000 (20:43 +0000)]
nfp: centralize the buffer size calculation

Add a helper function to calculate the buffer size at run time.
Buffer lengths will now depend on the FW prepend configuration
instead of assuming the most space consuming configuration and
defaulting to 2k buffers at initialization time.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: remove inline attributes and dead code
Jakub Kicinski [Mon, 31 Oct 2016 20:43:12 +0000 (20:43 +0000)]
nfp: remove inline attributes and dead code

Don't declare functions as static inline in .c files and
remove dead code it was hiding.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: remove unnecessary call to ether_setup()
Jakub Kicinski [Mon, 31 Oct 2016 20:43:11 +0000 (20:43 +0000)]
nfp: remove unnecessary call to ether_setup()

ether_setup() will be invoked by alloc_etherdev_mqs(), no need
to call it again.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: remove support for nfp3200
Jakub Kicinski [Mon, 31 Oct 2016 20:43:10 +0000 (20:43 +0000)]
nfp: remove support for nfp3200

Drop all code related to nfp3200.  It was never widely deployed
as a NIC.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonfp: simplify nfp_net_poll()
Jakub Kicinski [Mon, 31 Oct 2016 20:43:09 +0000 (20:43 +0000)]
nfp: simplify nfp_net_poll()

There are few variables in nfp_net_poll() which are used only
once or unused but set.  Remove them.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'qed-next'
David S. Miller [Tue, 1 Nov 2016 15:00:24 +0000 (11:00 -0400)]
Merge branch 'qed-next'

Yuval Mintz says:

====================
qed*: Fixes to "Allow unicast filtering"

Commit 7b7e70f979e3 ("qed*: Allow unicast filtering") introduced several
issues in driver. This series is intended to address and fix those.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Correct VF mac number
Mintz, Yuval [Mon, 31 Oct 2016 20:26:54 +0000 (22:26 +0200)]
qed: Correct VF mac number

When relaxing the limitation on the number of unicast MAC filters
an interface can configure, qed started passing the MAC quota to
qede. However, the value is initialized only for PFs, causing VFs
to always try and configure themselves as promiscuous
[as they believe they lack the resources to configure the rx-mode].

Fixes: 7b7e70f979e3 ("qed*: Allow unicast filtering")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqede: Don't override priv_flags
Mintz, Yuval [Mon, 31 Oct 2016 20:26:53 +0000 (22:26 +0200)]
qede: Don't override priv_flags

Driver is now setting the ndev's priv_flags instead of adding to it,
causing pktgen failure to utilize various features due to the loss
of the IFF_TX_SKB_SHARING indication.

Fixes: 7b7e70f979e3 ("qed*: Allow unicast filtering")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Tue, 1 Nov 2016 14:58:10 +0000 (10:58 -0400)]
Merge branch '40GbE' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
40GbE Intel Wired LAN Driver Updates 2016-10-31

This series contains updates to i40e and i40evf.

Colin Ian King fixes a minor issue with dev_err message where a new line
character was missing from the end of the message.

Jake provides several most of the changes in the series, starting with
dropping the is_vf and is_netdev fields in the i40e_mac_filter structure
since they are not needed (along with the checks that used these fields).
Reason being that we use separate VSI's for SRIOV VFs and for netdev VSIs,
therefore a single VSI should only have one type of filter.  Then
simplifies our .set_rx_mode handler by using the kernel provided
__dev_uc_sync and __dev_mc_sync functions for notification of add and
deletion of filters.  Refactored the i40e_put_mac_in_vlan() to resolve
an issue where this function was arbitrarily modifying all filters to
have the same VLAN, which is incorrect because it could be modifying
active filters without putting them into the new state.  Refactored the
delete filter logic so that we can re-use the functionality, where
appropriate, without having to search for the filter twice.  Reduced the
latency of operations related to searching for specific MAC filters by
using a static hash table instead of a list.  Reduced code duplication
in the adminq command to add/delete for filters.  Fixed an issue where
TSYNVALID bit was not being checked as the true indicator of whether
the packet has an associated timestamp.  Cleaned up a second msleep()
call by simply re-ordering the code so that the extra wait is no longer
needed.

Alan provides additional fix to the work Jake has been doing to resolve
a bug where adding at least one VLAN and then removing all VLANs leaves
the MAC filters for the VSI with an incorrect value for the VID which
indicates the MAC filter's VLAN status.

Alex adds a common method for finding a VSI by type.  Also cleaned up
the logic for coalescing RS bits, which was convoluted and larger than
it needed to be.

Mitch fixes an issue with the failure to add filters when the VF driver
is reloaded by simply setting the number of filters to 0 when freeing
VF resources.

Maciej implements a I40E_NVMUPD_STATE_ERROR state for NVM update, so
that the driver has the ability to return NVM image write failure.

Filip removes unreachable code which was found using static analysis
where "if" statements were never in a "true/false" state, so clean up
unnecessary if statements.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: set SK_MEM_QUANTUM to 4096
Eric Dumazet [Mon, 31 Oct 2016 20:32:55 +0000 (13:32 -0700)]
net: set SK_MEM_QUANTUM to 4096

Systems with large pages (64KB pages for example) do not always have
huge quantity of memory.

A big SK_MEM_QUANTUM value leads to fewer interactions with the
global counters (like tcp_memory_allocated) but might trigger
memory pressure much faster, giving suboptimal TCP performance
since windows are lowered to ridiculous values.

Note that sysctl_mem units being in pages and in ABI, we also need
to change sk_prot_mem_limits() accordingly.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: cris: make eth_v10.c explicitly non-modular
Paul Gortmaker [Mon, 31 Oct 2016 19:32:16 +0000 (15:32 -0400)]
net: cris: make eth_v10.c explicitly non-modular

The Makefile/Kconfig currently controlling compilation of this code is:

drivers/net/cris/Makefile:obj-$(CONFIG_ETRAX_ARCH_V10) += eth_v10.o

arch/cris/Kconfig:config ETRAX_ARCH_V10
arch/cris/Kconfig:       bool

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

There was a one line wrapper for the int init function, which made no
sense; hence we just put the device_initcall on the true init function
itself and delete the pointless wrapper.  In doing that we get rid of
the following compile warning:

   WARNING: drivers/net/built-in.o(.text+0x1e28): Section mismatch in
   reference from the function etrax_init_module() to the function
   .init.text:etrax_ethernet_init()

We don't replace module.h with init.h since the file already has that.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: netdev@vger.kernel.org
Cc: linux-cris-kernel@axis.com
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoi40e: removed unreachable code
Filip Sadowski [Tue, 11 Oct 2016 22:26:58 +0000 (15:26 -0700)]
i40e: removed unreachable code

Removed some of unnecessary if statements and unreachable code found by
static code analysis tool.
The return value of i40e_vsi_control_rings(..., false) is always 0. So,
test for non-zero will never be true. The function has been split into
"int i40e_vsi_start_rings()" and "void i40e_vsi_stop_rings()" for better
understanding.
Similarly, the function i40e_vsi_kill_vlan() never fails. So, checking
for return value is also unnecessary. Function definition changed to void.
The i40e_loopback_test() function is not implemented. The function and
all references to loopback testing were removed.

Change-ID: Id45cf66f6689ce2bc4e887de13f073e30e8431bd
Signed-off-by: Filip Sadowski <filip.sadowski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40e: Implementation of ERROR state for NVM update state machine
Maciej Sosin [Tue, 11 Oct 2016 22:26:57 +0000 (15:26 -0700)]
i40e: Implementation of ERROR state for NVM update state machine

This patch adds I40E_NVMUPD_STATE_ERROR state for NVM update.
Without this patch driver has no possibility to return NVM image write
failure.This state is being set when ARQ rises error.
arq_last_status is also updated every time when ARQ event comes,
not only on error cases.

Change-ID: I67ce43ba22a240773c2821b436e96054db0b7c81
Signed-off-by: Maciej Sosin <maciej.sosin@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40e: Fix for division by zero
Michal Kosiarz [Tue, 11 Oct 2016 22:26:56 +0000 (15:26 -0700)]
i40e: Fix for division by zero

For some cases when reading from device are incorrect or image is
incorrect, this part of code causes crash due to division by zero.

Change-ID: I8961029a7a87b0a479995823ef8fcbf6471405e1
Signed-off-by: Michal Kosiarz <michal.kosiarz@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40e: clear mac filter count on reset
Mitch Williams [Tue, 11 Oct 2016 22:26:55 +0000 (15:26 -0700)]
i40e: clear mac filter count on reset

When a VF is reset, it gets a new VSI, so all of its MAC filters go
away. Correctly set the number of filters to 0 when freeing VF
resources. This corrects a problem with failure to add filters when the
VF driver is reloaded.

Change-ID: I2acbecf734287b67473bb225293e14b5096acbef
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>
8 years agoi40e: Reorder logic for coalescing RS bits
Alexander Duyck [Tue, 11 Oct 2016 22:26:54 +0000 (15:26 -0700)]
i40e: Reorder logic for coalescing RS bits

This patch reorders the logic at the end of i40e_tx_map to address the
fact that the logic was rather convoluted and much larger than it needed
to be.

In order to try and coalesce the code paths I have updated some of the
comments and repurposed some of the variables in order to reduce
unnecessary overhead.

This patch does the following:
1.  Quit tracking skb->xmit_more with a flag, just max out packet_stride
2.  Drop tail_bump and do_rs and instead just use desc_count and td_cmd
3.  Pull comments from ixgbe that make need for wmb() more explicit.

Change-ID: Ic7da85ec75043c634e87fef958109789bcc6317c
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40e: Add common function for finding VSI by type
Alexander Duyck [Tue, 11 Oct 2016 22:26:53 +0000 (15:26 -0700)]
i40e: Add common function for finding VSI by type

This patch adds a common method for finding a VSI by type.  The main
motivation for doing this is that the Flow Director path actually had two
ways of handling this, one stopped on first match and one did not.  This
patch makes it so that all callers of this function will get the same
approach for finding a VSI.

Change-ID: Ibf25de8acd8466582520694424aa87da66965fbd
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Bimmy Pujari <bimmy.pujari@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40evf: avoid an extra msleep while
Jacob Keller [Wed, 5 Oct 2016 16:30:45 +0000 (09:30 -0700)]
i40evf: avoid an extra msleep while

Remove the second call to msleep outside the loop, and move the msleep
within the loop as the first step. This guarantees that a single loop
will wait the minimum time first, and then after the reset finishes we
no longer need an extra msleep.

Change-ID: Ib2086f0a142402b614f67846bc091754203a0b9a
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>
8 years agoi40e: replace PTP Rx timestamp hang logic
Jacob Keller [Wed, 5 Oct 2016 16:30:44 +0000 (09:30 -0700)]
i40e: replace PTP Rx timestamp hang logic

The current Rx timestamp hang logic is not very robust because it does
not notice a register is hung until all four timestamps have been
latched and we wait a full 5 seconds. Replace this logic with a newer Rx
hang detection based on storing the jiffies when we first notice
a receive timestamp event. We store each register's time separately,
along with a flag indicating if it is currently latched. Upon first
transitioning to latch, we will update the latch_events[i] jiffies
value. This indicates the time we first noticed this event. The watchdog
routine will simply check that the either the flag has been cleared, or
we have passed at least one second. In this case, it is able to clear
the Rx timestamp register under the assumption that it was for a dropped
frame. The benefit if this strategy is that we should be able to
detect and clear out stalled RXTIME_H registers before we exhaust the
supply of 4, and avoid complete stall of Rx timestamp events.

Change-ID: Id55458c0cd7a5dd0c951ff2b8ac0b2509364131f
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>
8 years agoi40e: use a mutex instead of spinlock in PTP user entry points
Jacob Keller [Wed, 5 Oct 2016 16:30:43 +0000 (09:30 -0700)]
i40e: use a mutex instead of spinlock in PTP user entry points

We need a locking mechanism to protect the hardware SYSTIME register
which is split over 2 values, and has internal hardware latching. We
can't allow multiple accesses at the same time. However....

The spinlock_t is overkill here, especially use of spin_lock_irqsave,
since every PTP access will halt hardirqs. Notice that the only places
which need the SYSTIME value are user context and are capable of sleeping.
Thus, it is safe to use a mutex here instead of the spinlock.

Change-ID: I971761a89b58c6aad953590162e85a327fbba232
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>
8 years agoi40e: correct check for reading TSYNINDX from the receive descriptor
Jacob Keller [Wed, 5 Oct 2016 16:30:42 +0000 (09:30 -0700)]
i40e: correct check for reading TSYNINDX from the receive descriptor

When hardware has taken a timestamp for a received packet, it indicates
which RXTIME register the timestamp was placed in by some bits in the
receive descriptor. It uses 3 bits, one to indicate if the descriptor
index is valid (ie: there was a timestamp) and 2 bits to indicate which
of the 4 registers to read. However, the driver currently does not check
the TSYNVALID bit and only checks the index. It assumes a zero index
means no timestamp, and a non zero index means a timestamp occurred.
While this appears to be true, it prevents ever reading a timestamp in
RXTIME[0], and causes the first timestamp the device captures to be
ignored.

Fix this by using the TSYNVALID bit correctly as the true indicator of
whether the packet has an associated timestamp.

Also rename the variable rsyn to tsyn as this is more descriptive and
matches the register names.

Change-ID: I4437e8f3a3df2c2ddb458b0fb61420f3dafc4c12
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>
8 years agoi40e: remove duplicate add/delete adminq command code for filters
Jacob Keller [Wed, 5 Oct 2016 16:30:41 +0000 (09:30 -0700)]
i40e: remove duplicate add/delete adminq command code for filters

We duplicate some code around adding and deleting filters using the
adminq interface. This is prone to errors in case there are bugs. Use
functions which extract the logic to their own portion so that we don't
duplicate it twice in code.

Change-ID: I60d68aeb887976787dec00b23ab386a106e61465
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>
8 years agoi40e: avoid looping to check whether we're in VLAN mode
Jacob Keller [Wed, 5 Oct 2016 16:30:40 +0000 (09:30 -0700)]
i40e: avoid looping to check whether we're in VLAN mode

We determine that a VSI is in vlan_mode whenever it has any filters
with a VLAN other than -1 (I40E_VLAN_ALL). The previous method of doing
so was to perform a loop whenever we needed the check. However, we can
notice that only place where filters are added (i40e_add_filter) can
change the condition from false to true, and the only place we can
return to false is in i40e_vsi_sync_filters_subtask. Thus, we can remove
the loop and use a boolean directly.

Doing this avoids looping over filters repeatedly especially while we're
already inside a loop over all the filters. This should reduce the
latency of filter operations throughout the driver.

Change-ID: Iafde08df588da2a2ea666997d05e11fad8edc338
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>
8 years agoi40e: fix MAC filters when removing VLANs
Alan Brady [Wed, 5 Oct 2016 16:30:39 +0000 (09:30 -0700)]
i40e: fix MAC filters when removing VLANs

Currently there exists a bug where adding at least one VLAN and then
removing all VLANs leaves the mac filters for the VSI with an incorrect
value for 'vid' which indicates the mac filter's VLAN status.

The current implementation for handling the removal of VLANs is wrong
for a couple reasons. The first is that when i40e_vsi_kill_vlan
iterates through the MAC filters, it fails to account for the MAC filter
status; i.e. it's not accommodating for filters that are about to be
deleted. The second problem is that MAC filters can be deleted in other
places (specifically i40e_set_rx_mode). Thus if it occurs that all the
VLAN MAC filters get deleted we need to switch out of VLAN mode, but the
code path through i40e_vsi_kill_vlan has already been executed and we're
now stuck in VLAN mode.

This patch fixes the issue by removing the check from i40e_vsi_kill_vlan
and puts the check instead in i40e_sync_vsi_filters where we're
guaranteed to see all filter deletions and can properly detect when we
need to switch out of VLAN mode.

Change-ID: Ib38fe6034b356eee9a0e20b8a9eeed5ff2debcd9
Signed-off-by: Alan Brady <alan.brady@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40e: properly cleanup on allocation failure in i40e_sync_vsi_filters
Jacob Keller [Wed, 5 Oct 2016 16:30:38 +0000 (09:30 -0700)]
i40e: properly cleanup on allocation failure in i40e_sync_vsi_filters

Currently, we fail to correctly restore filters on the temporary add
list when we fail to allocate memory either for deletion or addition.
Replace calls to "goto out;" with calls to a new location that correctly
handles memory allocation failures.

Note that it is safe for us to call i40e_undo_filter_entries on the
tmp_del_list even after we've deleted filters because at this point it
will be empty, so we don't need to separate the logic for add and
delete failure.

Change-Id: Iee107fd219c6e03e2fd9645c2debf8e8384a8521
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>
8 years agoi40e: store MAC/VLAN filters in a hash with the MAC Address as key
Jacob Keller [Wed, 5 Oct 2016 16:30:37 +0000 (09:30 -0700)]
i40e: store MAC/VLAN filters in a hash with the MAC Address as key

Replace the mac_filter_list with a static size hash table of 8bits. The
primary advantage of this is a decrease in latency of operations related
to searching for specific MAC filters, including .set_rx_mode. Using
a linked list resulted in several locations which were O(n^2). Using
a hash table should give us latency growth closer to O(n*log(n)).

Change-ID: I5330bd04053b880e670210933e35830b95948ebb
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
8 years agoi40e: implement __i40e_del_filter and use where applicable
Jacob Keller [Wed, 5 Oct 2016 16:30:36 +0000 (09:30 -0700)]
i40e: implement __i40e_del_filter and use where applicable

When inside a loop where we call i40e_del_filter we use an O(n^2)
pattern where i40e_del_filter calls i40e_find_filter for us. We can
avoid this O(n^2) logic by factoring a function, __i40e_del_filter() out
from the i40e_del_filter code. This allows us to re-use the delete logic
where appropriate without having to search for the filter twice.

This new function benefits several functions including i40e_vsi_add_vlan,
i40e_vsi_kill_vlan, i40e_del_mac_vlan_all, and i40e_vsi_release.

Change-ID: I75fabe0f53bf73f56b80d342e5fdcfcc28f4d3eb
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>
8 years agoi40e: When searching all MAC/VLAN filters, ignore removed filters
Jacob Keller [Wed, 5 Oct 2016 16:30:35 +0000 (09:30 -0700)]
i40e: When searching all MAC/VLAN filters, ignore removed filters

When adding new MAC address filters, the driver determines if it should
behave in VLAN mode (where all MAC addresses get assigned to every
existing VLAN) or in non-VLAN mode where MAC addresses get assigned the
VLAN_ANY identifier. Under some circumstances it is possible that a VLAN
has been marked for removal (such that all filters of that VLAN are set
to I40E_FILTER_REMOVE), and a subsequent call to i40e_put_mac_in_vlan
may occur prior to the driver subtask that syncs filters to the
hardware.

In this case, we may add filters to the new removed VLAN, even though it
should have been removed. This is most obvious when first adding a new
VLAN. We will delete all filters which are in I40E_VLAN_ANY (-1) and
then re-add them as in VLAN 0 (untagged). Then before we sync filters,
we will add new MAC address filter, which will be added to every VLAN
that exists. Unfortunately, this will include I40E_VLAN_ANY, so we will
end up incorrectly adding filters to the -1 VLAN. This can be fixed by
simply skipping all filters which are marked for removal.

A similar check is not necessary in i40e_del_mac_all_vlan, since we are
deleting, and any filter which we find already marked for removal would
simply be deleted again, which doesn't cause any issues.

Change-Id: I7962154013ce02fe950584690aeeb3ed853d0086
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>
8 years agoi40e: refactor i40e_put_mac_in_vlan to avoid changing f->vlan
Jacob Keller [Wed, 5 Oct 2016 16:30:34 +0000 (09:30 -0700)]
i40e: refactor i40e_put_mac_in_vlan to avoid changing f->vlan

When a PVID has been assigned to a VSI, the function
i40e_put_mac_in_vlan arbitrarily modifies all filters
to have the same VLAN. This is obviously incorrect
because it could be modifying active filters without
putting them into the NEW state. The correct method
is to remove then re-add filters which is already done
in the code where we assign the PVID.

Fix this issue and a few other minor nits at the same
time. First, when we have a PVID don't even bother
looping and simply add the filter with the PVID immediately.

In the case of the loop, we now can remove several checks.
We also don't need to use i40e_find_filter first before
calling i40e_add_filter, since i40e_add_filter implicitly
does a lookup already.

Finally, update the return semantics of this function so
that on failure to add a filter it returns NULL, but on
success, it returns the last filter added. Otherwise,
we're just returning the last filter in the list. An
alternative fix might be to return 0 or an error code,
but this is pretty invasive to every call site.

Change-ID: I2325dfd843aec76d89fb0d7cb0e7c4f290a34840
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40e: move i40e_put_mac_in_vlan and i40e_del_mac_all_vlan
Jacob Keller [Wed, 5 Oct 2016 16:30:33 +0000 (09:30 -0700)]
i40e: move i40e_put_mac_in_vlan and i40e_del_mac_all_vlan

A future patch will be modifying these functions and making a call to
a static function which currently is defined after these functions. Move
them in a separate patch to ease review and ensure the moved code is
correct.

Change-ID: I2ca7fd4e10c0c07ed2291db1ea41bf5987fc6474
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>
8 years agoi40e: make use of __dev_uc_sync and __dev_mc_sync
Jacob Keller [Wed, 5 Oct 2016 16:30:32 +0000 (09:30 -0700)]
i40e: make use of __dev_uc_sync and __dev_mc_sync

The kernel provides __dev_uc_sync and __dev_mc_sync in order for drivers
which need individual notification of add and delete for each filter.
These functions allow us to vastly simplify our .set_rx_mode handler. We
need to implement two functions for sync and unsync which add and remove
filters respectively.

This change avoids a very complex and inefficient algorithm which
resulted in an abnormal latency for the .set_rx_mode NDO operation. The
resulting code after this change is more readable, more efficient, and
less code.

Due to the callback signature used by these functions we also must
update several other functions to take a const u8 * pointer.

Change-Id: I2ca7fd4e10c0c07ed2291db1ea41bf5987fc6474
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>
8 years agoi40e: drop is_vf and is_netdev fields in struct i40e_mac_filter
Jacob Keller [Wed, 5 Oct 2016 16:30:31 +0000 (09:30 -0700)]
i40e: drop is_vf and is_netdev fields in struct i40e_mac_filter

Originally the is_vf and is_netdev fields were added in order to
distinguish between VF and netdev filters in a single VSI. However, it
can be noted that we use separate VSI for SRIOV VFs and for netdev VSI.
Thus, since a single VSI should only ever have one type of filter, we
can simply remove the checks and remove the typing.

In a similar fashion, we can note that the only remaining way to get
multiple filters of a single type is through a debug command that was
added to debugfs. This command is useless in practice, and results in
causing bugs if we keep counter tracking but lose the is_vf and
is_netdev protections as desired above.

Since the only time we'd actually have a counter value besides 0 and
1 is through use of this debugfs hook, we can remove this unnecessary
command, and the entire counter logic it required.

We vastly simplify mac filters by removing

(a) the distinction between VF and netdev filters
(b) counting logic
(c) the ability to add and remove filters bypassing the stack via debugfs

Change-ID: Idf916dd2a1159b1188ddbab5bef6b85ea6bf27d9
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoi40e: Add missing \n to end of dev_err message
Colin Ian King [Tue, 4 Oct 2016 11:20:16 +0000 (12:20 +0100)]
i40e: Add missing \n to end of dev_err message

Trival fix, dev_err message is missing a \n, so add it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
8 years agoMerge branch 'bridge-PIM-hello'
David S. Miller [Mon, 31 Oct 2016 20:18:31 +0000 (16:18 -0400)]
Merge branch 'bridge-PIM-hello'

Nikolay Aleksandrov says:

====================
bridge: add support for PIM hello router ports

The first 3 patches of this set do minor cleanups and add some helpers to
the PIM header file. Patch 4 adds a way to detect mcast router ports via
PIM hello messages, they're marked as temporary and are not considered for
querier. There's more detailed information in patch 4's commit message.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobridge: mcast: add router port on PIM hello message
Nikolay Aleksandrov [Mon, 31 Oct 2016 12:21:05 +0000 (13:21 +0100)]
bridge: mcast: add router port on PIM hello message

When we receive a PIM Hello message on a port we can consider that it
has a multicast router attached, thus it is correct to add it to the
router list. The only catch is it shouldn't be considered for a querier.

Using Daniel's description:
leaf-11  leaf-12  leaf-13
       \   |    /
        bridge-1
         /    \
    host-11  host-12

 - all ports in bridge-1 are in a single vlan aware bridge
 - leaf-11 is the IGMP querier
 - leaf-13 is the PIM DR
 - host-11 TXes packets to 226.10.10.10
 - bridge-1 only forwards the 226.10.10.10 traffic out the port to
   leaf-11, it should also forward this traffic out the port to leaf-13

Suggested-by: Daniel Walton <dwalton@cumulusnetworks.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: pim: add all RFC7761 message types
Nikolay Aleksandrov [Mon, 31 Oct 2016 12:21:04 +0000 (13:21 +0100)]
net: pim: add all RFC7761 message types

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: pim: add a helper to check for IPv4 all pim routers address
Nikolay Aleksandrov [Mon, 31 Oct 2016 12:21:03 +0000 (13:21 +0100)]
net: pim: add a helper to check for IPv4 all pim routers address

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: pim: add common pimhdr struct and helpers
Nikolay Aleksandrov [Mon, 31 Oct 2016 12:21:02 +0000 (13:21 +0100)]
net: pim: add common pimhdr struct and helpers

Add the common pimhdr structure and helpers to access it, also cleanup the
format of the header file.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'qed-next'
David S. Miller [Mon, 31 Oct 2016 19:52:37 +0000 (15:52 -0400)]
Merge branch 'qed-next'

Yuval Mintz says:

====================
qed*: Patch series

This series does several things. The bigger changes:

 - Add new notification APIs [& Defaults] for various fields.
The series then utilizes some of those qed <-> qede APIs to bass WoL
support upon.

 - Change the resource allocation scheme to receive the values from
management firmware, instead of equally sharing resources between
functions [that might not need those]. That would, e.g., allow us to
configure additional filters to network interfaces in presence of
storage [PCI] functions from same adapter.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Learn resources from management firmware
Tomer Tayar [Mon, 31 Oct 2016 05:14:27 +0000 (07:14 +0200)]
qed: Learn resources from management firmware

Currently, each interfaces assumes it receives an equal portion
of HW/FW resources, but this is wasteful - different partitions
[and specifically, parititions exposing different protocol support]
might require different resources.

Implement a new resource learning scheme where the information is
received directly from the management firmware [which has knowledge
of all of the functions and can serve as arbiter].

Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Use VF-queue feature
Mintz, Yuval [Mon, 31 Oct 2016 05:14:26 +0000 (07:14 +0200)]
qed: Use VF-queue feature

Driver sets several restrictions about the number of supported VFs
according to available HW/FW resources.
This creates a problem as there are constellations which can't be
supported [as limitation don't accurately describe the resources],
as well as holes where enabling IOV would fail due to supposed
lack of resources.

This introduces a new interal feature - vf-queues, which would
be used to lift some of the restriction and accurately enumerate
the queues that can be used by a given PF's VFs.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Learn of RDMA capabilities per-device
Mintz, Yuval [Mon, 31 Oct 2016 05:14:25 +0000 (07:14 +0200)]
qed: Learn of RDMA capabilities per-device

Today, RDMA capabilities are learned from management firmware
which provides a per-device indication for all interfaces.
Newer management firmware is capable of providing a per-device
indication [would later be extended to either RoCE/iWARP].

Try using this newer learning mechanism, but fallback in case
management firmware is too old to retain current functionality.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqede: Decouple ethtool caps from qed
Mintz, Yuval [Mon, 31 Oct 2016 05:14:24 +0000 (07:14 +0200)]
qede: Decouple ethtool caps from qed

While the qed_lm_maps is closely tied with the QED_LM_* defines,
when iterating over the array use actual size instead of the qed
define to prevent future possible issues.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed*: Add support for WoL
Mintz, Yuval [Mon, 31 Oct 2016 05:14:23 +0000 (07:14 +0200)]
qed*: Add support for WoL

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Add nvram selftest
Mintz, Yuval [Mon, 31 Oct 2016 05:14:22 +0000 (07:14 +0200)]
qed: Add nvram selftest

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed*: Management firmware - notifications and defaults
Sudarsana Kalluru [Mon, 31 Oct 2016 05:14:21 +0000 (07:14 +0200)]
qed*: Management firmware - notifications and defaults

Management firmware is interested in various tidbits about
the driver - including the driver state & several configuration
related fields [MTU, primtary MAC, etc.].
This adds the necessray logic to update MFW with such configurations,
some of which are passed directly via qed while for others APIs
are provide so that qede would be able to later configure if needed.

This also introduces a new default configuration for MTU which would
replace the default inherited by being an ethernet device.

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosolos-pci: use permission-specific DEVICE_ATTR variants
Julia Lawall [Sat, 29 Oct 2016 19:37:09 +0000 (21:37 +0200)]
solos-pci: use permission-specific DEVICE_ATTR variants

Use DEVICE_ATTR_RW for read-write attributes.  This simplifies the
source code, improves readbility, and reduces the chance of
inconsistencies.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@rw@
declarer name DEVICE_ATTR;
identifier x,x_show,x_store;
@@

DEVICE_ATTR(x, \(0644\|S_IRUGO|S_IWUSR\), x_show, x_store);

@script:ocaml@
x << rw.x;
x_show << rw.x_show;
x_store << rw.x_store;
@@

if not (x^"_show" = x_show && x^"_store" = x_store)
then Coccilib.include_match false

@@
declarer name DEVICE_ATTR_RW;
identifier rw.x,rw.x_show,rw.x_store;
@@

- DEVICE_ATTR(x, \(0644\|S_IRUGO|S_IWUSR\), x_show, x_store);
+ DEVICE_ATTR_RW(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoptp: use permission-specific DEVICE_ATTR variants
Julia Lawall [Sat, 29 Oct 2016 19:37:06 +0000 (21:37 +0200)]
ptp: use permission-specific DEVICE_ATTR variants

Use DEVICE_ATTR_RO for read only attributes.  This simplifies the
source code, improves readbility, and reduces the chance of
inconsistencies.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@ro@
declarer name DEVICE_ATTR;
identifier x,x_show;
@@

DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);

@script:ocaml@
x << ro.x;
x_show << ro.x_show;
@@

if not (x^"_show" = x_show) then Coccilib.include_match false

@@
declarer name DEVICE_ATTR_RO;
identifier ro.x,ro.x_show;
@@

- DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
+ DEVICE_ATTR_RO(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf, inode: add support for symlinks and fix mtime/ctime
Daniel Borkmann [Sat, 29 Oct 2016 00:30:46 +0000 (02:30 +0200)]
bpf, inode: add support for symlinks and fix mtime/ctime

While commit bb35a6ef7da4 ("bpf, inode: allow for rename and link ops")
added support for hard links that can be used for prog and map nodes,
this work adds simple symlink support, which can be used f.e. for
directories also when unpriviledged and works with cmdline tooling that
understands S_IFLNK anyway. Since the switch in e27f4a942a0e ("bpf: Use
mount_nodev not mount_ns to mount the bpf filesystem"), there can be
various mount instances with mount_nodev() and thus hierarchy can be
flattened to facilitate object sharing. Thus, we can keep bpf tooling
also working by repointing paths.

Most of the functionality can be used from vfs library operations. The
symlink is stored in the inode itself, that is in i_link, which is
sufficient in our case as opposed to storing it in the page cache.
While at it, I noticed that bpf_mkdir() and bpf_mkobj() don't update
the directories mtime and ctime, so add a common helper for it called
bpf_dentry_finalize() that takes care of it for all cases now.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoldmvsw: tx queue stuck in stopped state after LDC reset
Aaron Young [Fri, 28 Oct 2016 18:26:19 +0000 (14:26 -0400)]
ldmvsw: tx queue stuck in stopped state after LDC reset

The following patch fixes an issue with the ldmvsw driver where
the network connection of a guest domain becomes non-functional after
the guest domain has panic'd and rebooted.

The root cause was determined to be from the following series of
events:

1. Guest domain panics - resulting in the guest no longer processing
   network packets (from ldmvsw driver)
2. The ldmvsw driver (in the control domain) eventually exerts flow
   control due to no more available tx drings and stops the tx queue
   for the guest domain
3. The LDC of the network connection for the guest is reset when
   the guest domain reboots after the panic.
4. The LDC reset event is received by the ldmvsw driver and the ldmvsw
   responds by clearing the tx queue for the guest.
5. ldmvsw waits indefinitely for a DATA ACK from the guest - which is
   the normal method to re-enable the tx queue. But the ACK never comes
   because the tx queue was cleared due to the LDC reset.

To fix this issue, in addition to clearing the tx queue, re-enable the
tx queue on a LDC reset. This prevents the ldmvsw from getting caught in
this deadlocked state of waiting for a DATA ACK which will never come.

Signed-off-by: Aaron Young <Aaron.Young@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'xps-DCB'
David S. Miller [Mon, 31 Oct 2016 19:00:48 +0000 (15:00 -0400)]
Merge branch 'xps-DCB'

Alexander Duyck says:

====================
Add support for XPS when using DCB

This patch series enables proper isolation between traffic classes when
using XPS while DCB is enabled.  Previously enabling XPS would cause the
traffic to be potentially pulled from one traffic class into another on
egress.  This change essentially multiplies the XPS map by the number of
traffic classes and allows us to do a lookup per traffic class for a given
CPU.

To guarantee the isolation I invalidate the XPS map for any queues that are
moved from one traffic class to another, or if we change the number of
traffic classes.

v2: Added sysfs to display traffic class
    Replaced do/while with for loop
    Cleaned up several other for for loops throughout the patch
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Add support for XPS with QoS via traffic classes
Alexander Duyck [Fri, 28 Oct 2016 15:50:13 +0000 (11:50 -0400)]
net: Add support for XPS with QoS via traffic classes

This patch adds support for setting and using XPS when QoS via traffic
classes is enabled.  With this change we will factor in the priority and
traffic class mapping of the packet and use that information to correctly
select the queue.

This allows us to define a set of queues for a given traffic class via
mqprio and then configure the XPS mapping for those queues so that the
traffic flows can avoid head-of-line blocking between the individual CPUs
if so desired.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Refactor removal of queues from XPS map and apply on num_tc changes
Alexander Duyck [Fri, 28 Oct 2016 15:46:49 +0000 (11:46 -0400)]
net: Refactor removal of queues from XPS map and apply on num_tc changes

This patch updates the code for removing queues from the XPS map and makes
it so that we can apply the code any time we change either the number of
traffic classes or the mapping of a given block of queues.  This way we
avoid having queues pulling traffic from a foreign traffic class.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Add sysfs value to determine queue traffic class
Alexander Duyck [Fri, 28 Oct 2016 15:43:49 +0000 (11:43 -0400)]
net: Add sysfs value to determine queue traffic class

Add a sysfs attribute for a Tx queue that allows us to determine the
traffic class for a given queue.  This will allow us to more easily
determine this in the future.  It is needed as XPS will take the traffic
class for a group of queues into account in order to avoid pulling traffic
from one traffic class into another.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Move functions for configuring traffic classes out of inline headers
Alexander Duyck [Fri, 28 Oct 2016 15:43:20 +0000 (11:43 -0400)]
net: Move functions for configuring traffic classes out of inline headers

The functions for configuring the traffic class to queue mappings have
other effects that need to be addressed.  Instead of trying to export a
bunch of new functions just relocate the functions so that we can
instrument them directly with the functionality they will need.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodriver: tun: Use new macro SOCK_IOC_TYPE instead of literal number 0x89
Gao Feng [Thu, 27 Oct 2016 01:05:22 +0000 (09:05 +0800)]
driver: tun: Use new macro SOCK_IOC_TYPE instead of literal number 0x89

The current codes use _IOC_TYPE(cmd) == 0x89 to check if the cmd is one
socket ioctl command like SIOCGIFHWADDR. But the literal number 0x89 may
confuse readers. So create one macro SOCK_IOC_TYPE to enhance the readability.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: add an ioctl to get a socket network namespace
Andrey Vagin [Tue, 25 Oct 2016 01:29:13 +0000 (18:29 -0700)]
net: add an ioctl to get a socket network namespace

Each socket operates in a network namespace where it has been created,
so if we want to dump and restore a socket, we have to know its network
namespace.

We have a socket_diag to get information about sockets, it doesn't
report sockets which are not bound or connected.

This patch introduces a new socket ioctl, which is called SIOCGSKNS
and used to get a file descriptor for a socket network namespace.

A task must have CAP_NET_ADMIN in a target network namespace to
use this ioctl.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomv643xx_eth: Properly resolve merge conflict.
David S. Miller [Mon, 31 Oct 2016 14:33:08 +0000 (10:33 -0400)]
mv643xx_eth: Properly resolve merge conflict.

The second SET_NETDEV_DEV() in the hunk should be
removed.

Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomv643xx_eth: Fix merge error.
David S. Miller [Mon, 31 Oct 2016 12:59:27 +0000 (08:59 -0400)]
mv643xx_eth: Fix merge error.

One merge conflict block wasn't resolved.

Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'shared-for-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/leon...
David S. Miller [Sun, 30 Oct 2016 21:31:12 +0000 (17:31 -0400)]
Merge tag 'shared-for-4.10-1' of git://git./linux/kernel/git/leon/linux-rdma

Saeed Mahameed says:

====================
Mellanox mlx5 core driver updates 2016-10-25

This series contains some updates and fixes of mlx5 core and
IB drivers with the addition of two features that demand
new low level commands and infrastructure updates.
 - SRIOV VF max rate limit support
 - mlx5e tc support for FWD rules with counter.

Needed for both net and rdma subsystems.

Updates and Fixes:
From Saeed Mahameed (2):
  - mlx5 IB: Skip handling unknown mlx5 events
  - Add ConnectX-5 PCIe 4.0 VF device ID

From Artemy Kovalyov (2):
  - Update struct mlx5_ifc_xrqc_bits
  - Ensure SRQ physical address structure endianness

From Eugenia Emantayev (1):
  - Fix length of async_event_mask

New Features:
From Mohamad Haj Yahia (3): mlx5 SRIOV VF max rate limit support
  - Introduce TSAR manipulation firmware commands
  - Introduce E-switch QoS management
  - Add SRIOV VF max rate configuration support

From Mark Bloch (7): mlx5e Tc support for FWD rule with counter
  - Don't unlock fte while still using it
  - Use fte status to decide on firmware command
  - Refactor find_flow_rule
  - Group similar rules under the same fte
  - Add multi dest support
  - Add option to add fwd rule with counter
  - mlx5e tc support for FWD rule with counter
  Mark here fixed two trivial issues with the flow steering core, and did
  some refactoring in the flow steering API to support adding mulit destination
  rules to the same hardware flow table entry at once.  In the last two patches
  added the ability to populate a flow rule with a flow counter to the same flow entry.

V2: Dropped some patches that added new structures without adding any usage of them.
    Added SRIOV VF max rate configuration support patch that introduces
    the usage of the TSAR infrastructure.
    Added flow steering fixes and refactoring in addition to mlx5 tc
    support for forward rule with counter.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: bonding: use new api ethtool_{get|set}_link_ksettings
Philippe Reynes [Tue, 25 Oct 2016 16:41:31 +0000 (18:41 +0200)]
net: bonding: use new api ethtool_{get|set}_link_ksettings

The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'mlxsw-IB'
David S. Miller [Sun, 30 Oct 2016 20:50:20 +0000 (16:50 -0400)]
Merge branch 'mlxsw-IB'

Jiri Pirko says:

====================
mlxsw: Add Infiniband support for Mellanox switches

This patchset adds basic Infiniband support for SwitchX-2, Switch-IB
and Switch-IB-2 ASIC drivers.

SwitchX-2 ASIC is VPI capable, which means each port can be either
Ethernet or Infiniband. When the port is configured as Infiniband,
the Subnet Management Agent (SMA) is managed by the SwitchX-2 firmware
and not by the host. Port configuration, MTU and more are configured
remotely by the Subnet Manager (SM).

Usage:
        $ devlink port show
        pci/0000:03:00.0/1: type eth netdev eth0
        pci/0000:03:00.0/3: type eth netdev eth1
        pci/0000:03:00.0/5: type eth netdev eth2
        pci/0000:03:00.0/6: type eth netdev eth3
        pci/0000:03:00.0/8: type eth netdev eth4

        $ devlink port set pci/0000:03:00.0/1 type ib

        $ devlink port show
        pci/0000:03:00.0/1: type ib

Switch-IB (FDR) and Switch-IB-2 (EDR 100Gbs) ASICs are Infiniband-only
switches. The support provided in the mlxsw_switchib.ko driver is port
initialization only. The firmware running in the Silicon implements
the SMA.

Please note that this patchset does only very basic port initialization.
ib_device or RDMA implementations are not part of this patchset.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchib: Introduce SwitchIB and SwitchIB silicon driver
Elad Raz [Fri, 28 Oct 2016 19:36:01 +0000 (21:36 +0200)]
mlxsw: switchib: Introduce SwitchIB and SwitchIB silicon driver

SwitchIB and SwitchIB-2 are Infiniband switches with up to 36 ports. This
driver initialize the hardware and Firmware which implements the IB
management and connection with the SM.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Add IB port support
Elad Raz [Fri, 28 Oct 2016 19:36:00 +0000 (21:36 +0200)]
mlxsw: switchx2: Add IB port support

SwitchX-2 is IB capable device. This patch add a support to change the
port type between Ethernet and Infiniband.

When the port is set to IB, the FW implements the Subnet Management Agent
(SMA) manage the port. All port attributes can be control remotely by
the SM.

Usage:
$ devlink port show
pci/0000:03:00.0/1: type eth netdev eth0
pci/0000:03:00.0/3: type eth netdev eth1
pci/0000:03:00.0/5: type eth netdev eth2
pci/0000:03:00.0/6: type eth netdev eth3
pci/0000:03:00.0/8: type eth netdev eth4

$ devlink port set pci/0000:03:00.0/1 type ib

$ devlink port show
pci/0000:03:00.0/1: type ib

Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Add eth prefix to port create and remove
Elad Raz [Fri, 28 Oct 2016 19:35:59 +0000 (21:35 +0200)]
mlxsw: switchx2: Add eth prefix to port create and remove

Since we are about to add Infiniband port remove and create we will add
"eth" prefix to port create and remove APIs.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: core: Add port type (Eth/IB) set API
Elad Raz [Fri, 28 Oct 2016 19:35:58 +0000 (21:35 +0200)]
mlxsw: core: Add port type (Eth/IB) set API

Add "port_type_set" API to mlxsw core. The core layer send the change type
callback to the port along with it's private information.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: core: Add "eth" prefix to mlxsw_core_port_set
Elad Raz [Fri, 28 Oct 2016 19:35:57 +0000 (21:35 +0200)]
mlxsw: core: Add "eth" prefix to mlxsw_core_port_set

Since we are about to introduce IB port APIs, we will add prefixes to
existing APIs.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Add Infiniband switch partition
Elad Raz [Fri, 28 Oct 2016 19:35:56 +0000 (21:35 +0200)]
mlxsw: switchx2: Add Infiniband switch partition

In order to put a port in Infiniband fabric it should be assigned
to separate swid (Switch partition) that initialized as IB swid.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: Make devlink port instances independent of spectrum/switchx2 port instances
Jiri Pirko [Fri, 28 Oct 2016 19:35:55 +0000 (21:35 +0200)]
mlxsw: Make devlink port instances independent of spectrum/switchx2 port instances

Currently, devlink register/unregister is done directly from
spectrum/switchx2 port create/remove functions. With a need to
introduce a port type change, the devlink port instances have to be
persistent across type changes, therefore across port create/remove
function calls. So do a bit of reshuffling to achieve that.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: reg: Add local-port to Infiniband port mapping
Elad Raz [Fri, 28 Oct 2016 19:35:54 +0000 (21:35 +0200)]
mlxsw: reg: Add local-port to Infiniband port mapping

In order to change a port type to Infiniband port we should change his
mapping from local-port to Infiniband. Adding the PLIB (Port Local to
InfiniBand) allows this mapping.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: reg: Add Infiniband support to PTYS
Elad Raz [Fri, 28 Oct 2016 19:35:53 +0000 (21:35 +0200)]
mlxsw: reg: Add Infiniband support to PTYS

In order to support Infiniband fabric, we need to introduce IB speeds and
capabilities to PTYS emads.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: reg: Add eth prefix to PTYS pack and unpack
Elad Raz [Fri, 28 Oct 2016 19:35:52 +0000 (21:35 +0200)]
mlxsw: reg: Add eth prefix to PTYS pack and unpack

We want to add Infiniband support to PTYS. In order to maintain proper
conventions, we will change pack and unpack prefix to eth.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Fix port speed configuration
Elad Raz [Fri, 28 Oct 2016 19:35:51 +0000 (21:35 +0200)]
mlxsw: switchx2: Fix port speed configuration

In SwitchX-2 we configure the port speed to negotiate with 40G link only.
Add support for all other supported speeds.

Fixes: 31557f0f9755 ("mlxsw: Introduce Mellanox SwitchX-2 ASIC support")
Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Add support for physical port names
Elad Raz [Fri, 28 Oct 2016 19:35:50 +0000 (21:35 +0200)]
mlxsw: switchx2: Add support for physical port names

Export to userspace the front panel name of the port, so that udev can
rename the ports accordingly. The convention suggested by switchdev
documentation is used: pX

Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: spectrum: Move port used check outside port remove function
Jiri Pirko [Fri, 28 Oct 2016 19:35:49 +0000 (21:35 +0200)]
mlxsw: spectrum: Move port used check outside port remove function

Be symmentrical with create and do the check outside the remove function.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Move port used check outside port remove function
Jiri Pirko [Fri, 28 Oct 2016 19:35:48 +0000 (21:35 +0200)]
mlxsw: switchx2: Move port used check outside port remove function

Be symmentrical with create and do the check outside the remove function.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Check if port is usable before calling port create
Jiri Pirko [Fri, 28 Oct 2016 19:35:47 +0000 (21:35 +0200)]
mlxsw: switchx2: Check if port is usable before calling port create

Do it in a same way we do it in spectrum. Check if port is usable first
and only in that case create a port instance.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: core: Zero payload buffers for couple of registers
Elad Raz [Fri, 28 Oct 2016 19:35:46 +0000 (21:35 +0200)]
mlxsw: core: Zero payload buffers for couple of registers

We recently discovered a bug in the firmware in which a field's length in
one of the registers was incorrectly set. This caused the firmware to
access garbage data that wasn't initialized by the driver and therefore
emit error messages.

While the bug is already fixed and the driver usually zeros the buffers
passed to the firmware, there are a handful of cases where this isn't
done. Zero the buffer in these cases and prevent similar bugs from
recurring, as they tend to be hard to debug.

Fixes: 52581961d83d ("mlxsw: core: Implement fan control using hwmon")
Signed-off-by: Elad Raz <eladr@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Sun, 30 Oct 2016 16:42:58 +0000 (12:42 -0400)]
Merge git://git./linux/kernel/git/davem/net

Mostly simple overlapping changes.

For example, David Ahern's adjacency list revamp in 'net-next'
conflicted with an adjacency list traversal bug fix in 'net'.

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Add tc support for FWD rule with counter
Mark Bloch [Tue, 20 Sep 2016 07:58:29 +0000 (07:58 +0000)]
net/mlx5e: Add tc support for FWD rule with counter

When creating a FWD rule using tc create also a HW counter
for this rule.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Add option to add fwd rule with counter
Mark Bloch [Tue, 20 Sep 2016 07:59:05 +0000 (07:59 +0000)]
net/mlx5: Add option to add fwd rule with counter

Currently the code supports only drop rules to possess counters,
add that ability also for fwd rules.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Add multi dest support
Mark Bloch [Wed, 31 Aug 2016 11:24:25 +0000 (11:24 +0000)]
net/mlx5: Add multi dest support

Currently when calling mlx5_add_flow_rule we accept
only one flow destination, this commit allows to pass
multiple destinations.

This change forces us to change the return structure to a more
flexible one. We introduce a flow handle (struct mlx5_flow_handle),
it holds internally the number for rules created and holds an array
where each cell points the to a flow rule.

From the consumers (of mlx5_add_flow_rule) point of view this
change is only cosmetic and requires only to change the type
of the returned value they store.

From the core point of view, we now need to use a loop when
allocating and deleting rules (e.g given to us a flow handler).

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Group similer rules under the same fte
Mark Bloch [Sun, 11 Sep 2016 13:03:06 +0000 (13:03 +0000)]
net/mlx5: Group similer rules under the same fte

When adding a new rule, if we can match it with compare_match_value and
flow tag we might be able to insert the rule to the same fte.
In order to do that, there must be an overlap between the actions of the
fte and the new rule.

When updating the action of an existing fte, we must tell the firmware
we are doing so.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Refactor find_flow_rule
Mark Bloch [Fri, 16 Sep 2016 07:00:10 +0000 (07:00 +0000)]
net/mlx5: Refactor find_flow_rule

The way we compare between two dests will need to be used in other
places in the future, so we factor out the comparison logic
between two dests into a separate function.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Use fte status to decide on firmware command
Mark Bloch [Sun, 11 Sep 2016 12:54:50 +0000 (12:54 +0000)]
net/mlx5: Use fte status to decide on firmware command

An fte status becomes FS_FTE_STATUS_EXISTING only after it was
created in HW. We can use this in order to simplify the logic on
what firmware command to use. If the status isn't FS_FTE_STATUS_EXISTING
we need to create the fte, otherwise we need only to update it.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Don't unlock fte while still using it
Mark Bloch [Mon, 5 Sep 2016 10:58:04 +0000 (10:58 +0000)]
net/mlx5: Don't unlock fte while still using it

When adding a new rule to an fte, we need to hold the fte lock
until we add that rule to the fte and increase the fte ref count.

Fixes: 0c56b97503fd ("net/mlx5_core: Introduce flow steering API")
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Add SRIOV VF max rate configuration support
Mohamad Haj Yahia [Thu, 11 Aug 2016 08:28:21 +0000 (11:28 +0300)]
net/mlx5: Add SRIOV VF max rate configuration support

Implement the vf set rate ndo by modifying the TSAR vport rate limit.

Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Introduce E-switch QoS management
Mohamad Haj Yahia [Thu, 11 Aug 2016 08:26:36 +0000 (11:26 +0300)]
net/mlx5: Introduce E-switch QoS management

Add TSAR to the eswitch which will act as the vports rate limiter.
Create/Destroy TSAR on Enable/Dsiable SRIOV.
Attach/Detach vport to eswitch TSAR on Enable/Disable vport.

Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Introduce TSAR manipulation firmware commands
Mohamad Haj Yahia [Thu, 11 Aug 2016 08:21:39 +0000 (11:21 +0300)]
net/mlx5: Introduce TSAR manipulation firmware commands

TSAR (stands for Transmit Scheduling ARbiter) is a hardware component
that is responsible for selecting the next entity to serve on the
transmit path.
The arbitration defines the QoS policy between the agents connected to
the TSAR.
The TSAR is a consist two main features:
1) BW Allocation between agents:
The TSAR implements a defecit weighted round robin between the agents.
Each agent attached to the TSAR is assigned with a weight and it is
awarded transmission tokens according to this weight.
2) Rate limer per agent:
Each agent attached to the TSAR is (optionally) assigned with a rate
limit.
TSAR will not allow scheduling for an agent exceeding its defined rate
limit.

In this patch we implement the API of manipulating the TSAR.

Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Add ConnectX-5 PCIe 4.0 VF device ID
Saeed Mahameed [Tue, 18 Oct 2016 18:35:35 +0000 (21:35 +0300)]
net/mlx5: Add ConnectX-5 PCIe 4.0 VF device ID

For the mlx5 driver to support ConnectX-5 PCIe 4.0 VFs, we add the
device ID "0x101a" to mlx5_core_pci_table.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Fix length of async_event_mask
Eugenia Emantayev [Wed, 28 Sep 2016 14:29:41 +0000 (17:29 +0300)]
net/mlx5: Fix length of async_event_mask

According to PRM async_event_mask have to be 64 bits long.

Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
8 years agonet/mlx5: Ensure SRQ physical address structure endianness
Artemy Kovalyov [Wed, 31 Aug 2016 05:29:58 +0000 (05:29 +0000)]
net/mlx5: Ensure SRQ physical address structure endianness

SRQ physical address structure field should be in big-endian format.

Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>