Commit Graph

68 Commits

Author SHA1 Message Date
Nogah Frankel 575ed7d39e net_sch: mqprio: Change TC_SETUP_MQPRIO to TC_SETUP_QDISC_MQPRIO
Change TC_SETUP_MQPRIO to TC_SETUP_QDISC_MQPRIO to match the new
convention.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08 12:23:38 +09:00
Jacob Keller fc9173682d fm10k: introduce a message queue for MAC/VLAN messages
Under some circumstances, when dealing with a large number of MAC
address or VLAN updates at once, the fm10k driver, particularly the VFs
can overload the mailbox with too many messages at once.

This results in a mailbox timeout, which causes the driver to initiate
a reset. During the reset, we re-send all the same messages that
originally caused the timeout. This results in a cycle of resets each
triggering a future reset.

To fix or avoid this, we introduce a workqueue item which monitors
a queue of MAC and VLAN requests. These requests are queued to the end
of the list, and we process as a FIFO periodically.

Initially we only handle requests for the netdev, but we do handle
unicast MAC addresses, multicast MAC addresses, and update VLAN
requests.

A future patch will add support to use this queue for handling MAC
update requests from the VF<->PF mailbox.

The MAC/VLAN work item will keep checking to make sure that each request
does not overflow the mailbox and cause a timeout. If it might, then the
work item will reschedule itself a short time later. This avoids any
reset cycle, since we never send the message if the mailbox is not
ready.

As an alternative, we tried increasing the mailbox message FIFO, but
this just delays the problem and results in needless memory waste on the
system. Our new message queue is dynamically allocated so only uses as
much memory as it needs. Additionally, it need not be contiguous like
the Tx and Rx FIFOs.

Note that this patch chose to only create a queue for MAC and VLAN
messages, since these are the only messages sent in a large enough
volume to cause the reset loop. Other messages are very unlikely to
overflow the mailbox Tx FIFO so easily.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-10-03 08:25:36 -07:00
Jacob Keller dd5eede2b7 fm10k: avoid divide by zero in rare cases when device is resetting
It is possible that under rare circumstances the device is undergoing
a reset, such as when a PFLR occurs, and the device may be transmitting
simultaneously. In this case, we might attempt to divide by zero when
finding the proper r_idx. Instead, lets read the num_tx_queues once,
and make sure it's non-zero.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-10-02 08:07:57 -07:00
Jiri Pirko de4784ca03 net: sched: get rid of struct tc_to_netdev
Get rid of struct tc_to_netdev which is now just unnecessary container
and rather pass per-type structures down to drivers directly.
Along with that, consolidate the naming of per-type structure variables
in cls_*.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 09:42:37 -07:00
Jiri Pirko 38cf0426e5 net: sched: change return value of ndo_setup_tc for driver supporting mqprio only
Change the return value from -EINVAL to -EOPNOTSUPP. The rest of the
drivers have it like that, so be aligned.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 09:42:37 -07:00
Jiri Pirko 5fd9fc4e20 net: sched: push cls related args into cls_common structure
As ndo_setup_tc is generic offload op for whole tc subsystem, does not
really make sense to have cls-specific args. So move them under
cls_common structurure which is embedded in all cls structs.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 09:42:37 -07:00
Jiri Pirko 2572ac53c4 net: sched: make type an argument for ndo_setup_tc
Since the type is always present, push it to be a separate argument to
ndo_setup_tc. On the way, name the type enum and use it for arg type.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 09:42:35 -07:00
Jiri Pirko a5fcf8a6c9 net: propagate tc filter chain index down the ndo_setup_tc call
We need to push the chain index down to the drivers, so they have the
information to which chain the rule belongs. For now, no driver supports
multichain offload, so only chain 0 is supported. This is needed to
prevent chain squashes during offload for now. Later this will be used
to implement multichain offload.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-08 09:55:53 -04:00
Ngai-Mint Kwan 7d4fe0d123 fm10k: do not enqueue mailbox when host not ready
Interfaces will reset whenever the TX mailbox FIFO has become full. This
occurs more frequently whenever the IES API application is not running
to process and clear the messages in the FIFO. Thus, this could lead to
situations where the interface would enter an infinite reset loop. That
is: if the interface is trying to synchronize a huge number of unicast
and multicast entries with the IES API application, the TX mailbox FIFO
will become full and the interface resets. Once the interface exits
reset, it'll try to synchronize the unicast and multicast entries again.
Ergo, this creates an infinite loop. Other actions such as multiple
mulitcast mode or up/down transitions will fill the TX mailbox FIFO and
induce the interface to reset. To correct these situations, check if the
interface's "host_ready" flag is enabled before enqueuing any messages
to the TX mailbox FIFO. This check will be conducted by a function call.
Lastly, this issue mainly affects the PF and, thus, the VF is exempt.

Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-05 22:47:31 -07:00
Jacob Keller 02957703ca fm10k: update function header comment for fm10k_get_stats64
Re-word the comment to avoid stating that we return a value for this
void function. Additionally, there is no need to mention older kernels,
since this is the upstream kernel.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-05 22:47:31 -07:00
Jacob Keller 4692955787 fm10k: future-proof state bitmaps using DECLARE_BITMAP
This ensures that future programmers do not have to remember to re-size
the bitmaps due to adding new values. Although this is unlikely for this
driver, it may happen and it's best to prevent it from ever being an
issue.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-05 22:47:30 -07:00
Jacob Keller 3ee7b3a3b9 fm10k: use a BITMAP for flags to avoid race conditions
Replace bitwise operators and #defines with a BITMAP and enumeration
values. This is similar to how we handle the "state" values as well.

This has two distinct advantages over the old method. First, we ensure
correctness of operations which are currently problematic due to race
conditions. Suppose that two kernel threads are running, such as the
watchdog and an ethtool ioctl, and both modify flags. We'll say that the
watchdog is CPU A, and the ethtool ioctl is CPU B.

CPU A sets FLAG_1, which can be seen as
  CPU A read FLAGS
  CPU A write FLAGS | FLAG_1

CPU B sets FLAG_2, which can be seen as
  CPU B read FLAGS
  CPU A write FLAGS | FLAG_2

However, "|=" and "&=" operators are not actually atomic. So this could
be ordered like the following:

CPU A read FLAGS -> variable
CPU B read FLAGS -> variable
CPU A write FLAGS (variable | FLAG_1)
CPU B write FLAGS (variable | FLAG_2)

Notice how the 2nd write from CPU B could actually undo the write from
CPU A because it isn't guaranteed that the |= operation is atomic.

In practice the race windows for most flag writes is incredibly narrow
so it is not easy to isolate issues. However, the more flags we have,
the more likely they will cause problems. Additionally, if such
a problem were to arise, it would be incredibly difficult to track down.

Second, there is an additional advantage beyond code correctness. We can
now automatically size the BITMAP if more flags were added, so that we
do not need to remember that flags is u32 and thus if we added too many
flags we would over-run the variable. This is not a likely occurrence
for fm10k driver, but this patch can serve as an example for other
drivers which have many more flags.

This particular change does have a bit of trouble converting some of the
idioms previously used with the #defines for flags. Specifically, when
converting FM10K_FLAG_RSS_FIELD_IPV[46]_UDP flags. This whole operation
was actually quite problematic, because we actually stored flags
separately. This could more easily show the problem of the above
re-ordering issue.

This is really difficult to test whether atomics make a difference in
practical scenarios, but you can ensure that basic functionality remains
the same. This patch has a lot of code coverage, but most of it is
relatively simple.

While we are modifying these files, update their copyright year.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-05 22:47:30 -07:00
Amritha Nambiar 56f36acd21 mqprio: Modify mqprio to pass user parameters via ndo_setup_tc.
The configurable priority to traffic class mapping and the user specified
queue ranges are used to configure the traffic class, overriding the
hardware defaults when the 'hw' option is set to 0. However, when the 'hw'
option is non-zero, the hardware QOS defaults are used.

This patch makes it so that we can pass the data the user provided to
ndo_setup_tc. This allows us to pull in the queue configuration if the
user requested it as well as any additional hardware offload type
requested by using a value other than 1 for the hw value.

Finally it also provides a means for the device driver to return the level
supported for the offload type via the qopt->hw value. Previously we were
just always assuming the value to be 1, in the future values beyond just 1
may be supported.

Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-15 15:20:27 -07:00
stephen hemminger bc1f44709c net: make ndo_get_stats64 a void function
The network device operation for reading statistics is only called
in one place, and it ignores the return value. Having a structure
return value is potentially confusing because some future driver could
incorrectly assume that the return value was used.

Fix all drivers with ndo_get_stats64 to have a void function.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-08 17:51:44 -05:00
Jarod Wilson 91c527a556 ethernet/intel: use core min/max MTU checking
e100: min_mtu 68, max_mtu 1500
- remove e100_change_mtu entirely, is identical to old eth_change_mtu,
  and no longer serves a purpose. No need to set min_mtu or max_mtu
  explicitly, as ether_setup() will already set them to 68 and 1500.

e1000: min_mtu 46, max_mtu 16110

e1000e: min_mtu 68, max_mtu varies based on adapter

fm10k: min_mtu 68, max_mtu 15342
- remove fm10k_change_mtu entirely, does nothing now

i40e: min_mtu 68, max_mtu 9706

i40evf: min_mtu 68, max_mtu 9706

igb: min_mtu 68, max_mtu 9216
- There are two different "max" frame sizes claimed and both checked in
  the driver, the larger value wasn't relevant though, so I've set max_mtu
  to the smaller of the two values here to retain identical behavior.

igbvf: min_mtu 68, max_mtu 9216
- Same issue as igb duplicated

ixgb: min_mtu 68, max_mtu 16114
- Also remove pointless old == new check, as that's done in dev_set_mtu

ixgbe: min_mtu 68, max_mtu 9710

ixgbevf: min_mtu 68, max_mtu dependent on hardware/firmware
- Some hw can only handle up to max_mtu 1504 on a vf, others 9710

CC: netdev@vger.kernel.org
CC: intel-wired-lan@lists.osuosl.org
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-18 11:34:18 -04:00
Jacob Keller 1ad782928f fm10k: add support for Rx offloads on one Geneve tunnel
Similar to how we handle VXLAN offload, enable support for a single
Geneve tunnel.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-08-29 01:31:03 -07:00
Jacob Keller f92e0e4892 fm10k: rework vxlan_port offload before adding geneve support
In preparation for adding Geneve Rx offload support, refactor the
current VXLAN offload flow to be a bit more generic so that it will be
easier to add the new Geneve code. The fm10k hardware supports one VXLAN
and one Geneve tunnel, so we will eventually treat the VXLAN and Geneve
tunnels identically. To this end, factor out the code that handles the
current list so that we can use the generic flow for both tunnels in the
next patch.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-08-29 01:31:03 -07:00
Jacob Keller ce4dad2ce2 fm10k: prefer READ_ONCE instead of ACCESS_ONCE
While technically not needed, as all our uses of ACCESS_ONCE are scalar
types, we already use READ_ONCE in a few places, and for code
readability we can swap all the uses of the older ACCESS_ONCE into
READ_ONCE.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-08-29 01:31:03 -07:00
Sabrina Dubroca e5de25dce9 drivers/net: fixup comments after "Future-proof tunnel offload handlers"
Some comments weren't updated to reflect the renaming of ndo's and the
change of arguments.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-11 13:42:11 -07:00
Alexander Duyck f174cdbe5b fm10k: Replace ndo_add/del_vxlan_port with ndo_add/del_udp_enc_port
This change replaces the network device operations for adding or removing a
VXLAN port with operations that are more generically defined to be used for
any UDP offload port but provide a type.  As such by just adding a line to
verify that the offload type if VXLAN we can maintain the same
functionality.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-17 20:23:30 -07:00
Jacob Keller 8664109467 fm10k: consistently use Intel(R) for driver names
Update every header file and other locations to consistently use
Intel(R) instead of just Intel. Also update copyright year of files
which we modified.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-20 23:07:34 -07:00
Ngai-Mint Kwan 8998763a7b fm10k: Fix multicast mode sync issues
Multicast mode checking is no longer a requirement to perform unicast
and multicast address syncs. Specifically, a device operating in
promiscuous and/or all multicast mode is not excluded. The issue occurs
when the netdev is pre-configured to either multicast mode and is
enabled for the first time. The multicast-group table in the Switch
Manager will be missing obvious multicast entries associated to this
netdev.

Changes were also made to disallow unicast and multicast syncs with
VLAN 0. The Switch Manager considers VLAN 0 to be an invalid entry.
Requests with VLAN 0 by the netdev are only generated when the driver is
freshly installed and the default VID is not set.

Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-20 23:06:22 -07:00
Jacob Keller 9de6a1a6b8 fm10k: drop 1588 support
The 1588 support within fm10k does not work correctly with the current
version of the switch management software, and likely never worked
correctly to begin with. Remove support for PTP/1588. Update copyright
year for all these files while we're touching them.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-20 23:06:22 -07:00
Jacob Keller d8ec92f2cd fm10k: fix a minor typo in some comments
s/funciton/function to resolve a typo, and cleanup grammar on a few
comments regarding processing the VF mailboxes.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-05 12:49:38 -07:00
Bruce Allan fcdb0a9951 fm10k: cleanup remaining right-bit-shifted 1
Use BIT() macro instead.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-04-05 12:44:30 -07:00
John Fastabend 5eb4dce3b3 net: relax setup_tc ndo op handle restriction
I added this check in setup_tc to multiple drivers,

 if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)

Unfortunately restricting to TC_H_ROOT like this breaks the old
instantiation of mqprio to setup a hardware qdisc. This patch
relaxes the test to only check the type to make it equivalent
to the check before I broke it. With this the old instantiation
continues to work.

A good smoke test is to setup mqprio with,

# tc qdisc add dev eth4 root mqprio num_tc 8 \
  map 0 1 2 3 4 5 6 7 \
  queues 0@0 1@1 2@2 3@3 4@4 5@5 6@6 7@7

Fixes: e4c6734eaa ("net: rework ndo tc op to consume additional qdisc handle paramete")
Reported-by: Singh Krishneil <krishneil.k.singh@intel.com>
Reported-by: Jake Keller <jacob.e.keller@intel.com>
CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Shradha Shah <sshah@solarflare.com>
CC: Or Gerlitz <ogerlitz@mellanox.com>
CC: Ariel Elior <ariel.elior@qlogic.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CC: Bruce Allan <bruce.w.allan@intel.com>
CC: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-03 16:25:15 -05:00
John Fastabend 16e5cc6471 net: rework setup_tc ndo op to consume general tc operand
This patch updates setup_tc so we can pass additional parameters into
the ndo op in a generic way. To do this we provide structured union
and type flag.

This lets each classifier and qdisc provide its own set of attributes
without having to add new ndo ops or grow the signature of the
callback.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-17 09:47:35 -05:00
John Fastabend e4c6734eaa net: rework ndo tc op to consume additional qdisc handle parameter
The ndo_setup_tc() op was added to support drivers offloading tx
qdiscs however only support for mqprio was ever added. So we
only ever added support for passing the number of traffic classes
to the driver.

This patch generalizes the ndo_setup_tc op so that a handle can
be provided to indicate if the offload is for ingress or egress
or potentially even child qdiscs.

CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Shradha Shah <sshah@solarflare.com>
CC: Or Gerlitz <ogerlitz@mellanox.com>
CC: Ariel Elior <ariel.elior@qlogic.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CC: Bruce Allan <bruce.w.allan@intel.com>
CC: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-17 09:47:35 -05:00
Bruce Allan 0d722ec8bf fm10k: IS_ENABLED() is not appropriate for boolean kconfig option
Tri-states need 'if IS_ENABLED()', booleans should use 'ifdef'.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-12-22 05:23:17 -08:00
Alexander Duyck 09f8a82b6a fm10k: Cleanup exception handling for changing queues
This patch is meant to cleanup the exception handling for the paths where
we reset the interrupts and then reconfigure them.  In all of these paths
we had very different levels of exception handling.  I have updated the
driver so that all of the paths should result in a similar state if we
fail.

Specifically the driver will now unload the mailbox interrupt, free the
queue vectors and MSI-X, and then detach the interface.

In addition for any of the PCIe related resets I have added a check with
the hw_ready function to just make sure the registers are in a readable
state prior to reopening the interface.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-12-22 04:50:11 -08:00
Tom Herbert a188222b6e net: Rename NETIF_F_ALL_CSUM to NETIF_F_CSUM_MASK
The name NETIF_F_ALL_CSUM is a misnomer. This does not correspond to the
set of features for offloading all checksums. This is a mask of the
checksum offload related features bits. It is incorrect to set both
NETIF_F_HW_CSUM and NETIF_F_IP_CSUM or NETIF_F_IPV6 at the same time for
features of a device.

This patch:
  - Changes instances of NETIF_F_ALL_CSUM to NETIF_F_CSUM_MASK (where
    NETIF_F_ALL_CSUM is being used as a mask).
  - Changes bonding, sfc/efx, ipvlan, macvlan, vlan, and team drivers to
    use NEITF_F_HW_CSUM in features list instead of NETIF_F_ALL_CSUM.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15 16:50:08 -05:00
Bruce Allan 3d02b3df73 fm10k: cleanup overly long lines
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-12-13 15:28:38 -08:00
Bruce Allan a4fcad656e fm10k: whitespace cleanups
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-12-13 15:28:21 -08:00
Jacob Keller aa502b4a24 fm10k: consistently refer to VLANs and VLAN IDs
Instead of using lowercase vlan, vid, or VID, always use VLAN or VLAN ID
in comments when referring to VLANs. The original driver code was
consistent, but recent patches have not been as consistent with this
naming scheme.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-12-13 15:27:48 -08:00
Jacob Keller e0244903d4 fm10k: set netdev features in one location
Don't change netdev hw_features later in fm10k_probe, instead set all
values inside fm10k_alloc_netdev. To do so, we need to know the MAC type
(whether it is PF or VF) in order to determine what to do. This helps
ensure that all logic regarding features is co-located.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-12-05 23:55:13 -08:00
stephen hemminger 6f97532ef0 fm10k: fix memory leak
This was detected by Coverity.
The function skb_cow_head leaves skb alone on failure, so caller needs
to free.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-18 14:58:03 -05:00
Jacob Keller 5c2d642fd0 fm10k: TRIVIAL fix typo in fm10k_netdev.c
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-09-15 17:06:09 -07:00
Jacob Keller e71c931842 fm10k: send traffic on default VID to VLAN device if we have one
This patch ensures that VLAN traffic on the default VID will go to the
corresponding VLAN device if it exists. To do this, mask the rx_ring VID
if we have an active VLAN on that VID.

For this to work correctly, we need to update fm10k_process_skb_fields
to correctly mask off the VLAN_PRIO_MASK bits and compare them
separately, otherwise we incorrectly compare the priority bits with the
cleared flag. This also happens to fix a related bug where having
priority bits set causes us to incorrectly classify traffic.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-09-15 17:06:04 -07:00
Jacob Keller 3f0bdb2e2c fm10k: allow creation of VLAN interfaces even while down
We re-sync upon going up, so there is little reason to worry about not
syncing immediately with switch. This prevents an error that occurs if
you add a VLAN interface while down.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-09-15 17:05:46 -07:00
Jacob Keller bdc7f5902d fm10k: update netdev perm_addr during reinit, instead of at up
Update the netdev permanent address during fm10k_reinit enables the user
to immediately see the new MAC address on the VF even if the device
isn't up. The previous code required that the device by opened before
changes would appear.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-09-15 17:05:32 -07:00
Jacob Keller 56f0569e3a fm10k: only prevent removal of default VID rules
This allows us to correctly add a VLAN even if it matches our default
VID. However, we don't want to remove the VID rules once that VLAN is
deleted. Correctly remove the stack layers information of the VLAN, but
then return to forwarding that VID as untagged frames. If we deleted the
VID rules here, we would begin dropping traffic due to VLAN membership
violations.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-09-15 17:05:23 -07:00
Jacob Keller f1f3322eb4 fm10k: remove extraneous NULL check on l2_accel
l2_accel was checked for NULL at the top of fm10k_dfwd_del_station, and
we return if it is not defined. Due to this, we already know it can't be
null here so a separate check is meaningless. Discovered via cppcheck.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:56 -07:00
Jacob Keller 745136a8b7 fm10k: ignore invalid multicast address entries
This change fixes an issue with adding an invalid multicast address
using the iproute2 tool (ip maddr add <MADDR> dev <dev>). The iproute2
tool and the kernel do not validate or filter the multicast addresses
when adding them to the multicast list. Thus, when synchronizing this
list with an invalid entry, the action will be aborted with an error
since the fm10k driver currently validates the list. Consequently,
multicast entries beyond the invalid one will not be processed and
communicated with the switch via the mailbox. This change makes it so
that invalid addresses will simply be skipped and allows synchronizing
the full list to proceed.

Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-06-17 14:20:23 -07:00
Jeff Kirsher a7731cc8a1 fm10k: update xcast mode before synchronizing multicast addresses
When the PF receives a request to update a multicast address for the VF,
it checks the enabled multicast mode first. Fix a bug where the VF tried
to set a multicast address before requesting the required xcast mode.
This ensures the multicast addresses are honored as long as the xcast
mode was allowed.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-14 15:49:04 -07:00
Jeff Kirsher 661b206791 fm10k: allow creation of VLAN on default vid
Previously, the user was not allowed to create a VLAN interface on top
of the switch default vid.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-14 15:34:33 -07:00
Jeff Kirsher 8b4a98c7fa fm10k: Add netconsole support
This change adds a function called "fm10k_netpoll" that's used to define
"ndo_poll_controller" in "fm10k_netdev_ops". This is required to enable
support for "netconsole" in fm10k.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Acked-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-14 15:08:37 -07:00
Jeff Kirsher f4e25f6e36 fm10k: Corrected an error in Tx statistics
The function collecting Tx statistics was actually using values from the RX
ring. Thus, Tx and Rx statistics values reported by "ifconfig" will
return identical values. This change corrects this error and the Tx
statistics is now reading from the Tx ring.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
2015-04-14 14:42:27 -07:00
Matthew Vick eca3204765 fm10k: Resolve various spelling errors and checkpatch warnings
Fix a few silly typos in the code and checkpatch warnings in support of
general code cleanliness.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-03 01:07:23 -08:00
Matthew Vick 5bf33dc687 fm10k: Implement ndo_features_check
The introduction of ndo_features_check allows drivers to report their
offload capabilities per-skb. Implement this in fm10k to take advantage
of this new functionality.

Reported-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-03 01:07:22 -08:00
Or Gerlitz e2929e453a net/fm10k: Avoid double setting of NETIF_F_SG for the HW encapsulation feature mask
The networking core does it for the driver during registration time.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Acked-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-01-22 18:10:20 -08:00