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591890 commits

Author SHA1 Message Date
Vivien Didelot
553eb54444 net: dsa: mv88e6xxx: remove bridge work
Now that the bridge code defers the switchdev port state setting, there
is no need to defer the port STP state change within the mv88e6xxx code.
Thus get rid of the driver's bridge work code.

This also fixes a race condition where the DSA layer assumes that the
bridge code already set the unbridged port's STP state to Disabled
before restoring the Forwarding state.

As a consequence, this also fixes the FDB flush for the unbridged port
which now correctly occurs during the Forwarding to Disabled transition.

Fixes: 0bc05d585d ("switchdev: allow caller to explicitly request attr_set as deferred")
Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:46:24 -04:00
David Ahern
b0e95ccdd7 net: vrf: protect changes to private data with rcu
One cpu can be processing packets which includes using the cached route
entries in the vrf device's private data and on another cpu the device
gets deleted which releases the routes and sets the pointers in net_vrf
to NULL. This results in datapath dereferencing a NULL pointer.

Fix by protecting access to dst's with rcu.

Fixes: 193125dbd8 ("net: Introduce VRF device driver")
Fixes: 35402e3136 ("net: Add IPv6 support to VRF device")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:46:24 -04:00
Eric Dumazet
ea1627c20c tcp: minor optimizations around tcp_hdr() usage
tcp_hdr() is slightly more expensive than using skb->data in contexts
where we know they point to the same byte.

In receive path, tcp_v4_rcv() and tcp_v6_rcv() are in this situation,
as tcp header has not been pulled yet.

In output path, the same can be said when we just pushed the tcp header
in the skb, in tcp_transmit_skb() and tcp_make_synack()

Also factorize the two checks for tcb->tcp_flags & TCPHDR_SYN in
tcp_transmit_skb() and pass tcp header pointer to tcp_ecn_send(),
so that compiler can further optimize and avoid a reload.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:46:23 -04:00
Nicolas Dichtel
5022524308 netlink: kill nla_put_u64()
This function is not used anymore. nla_put_u64_64bit() should be used
instead.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:46:23 -04:00
Eric Dumazet
2632616bc4 sock: propagate __sock_cmsg_send() error
__sock_cmsg_send() might return different error codes, not only -EINVAL.

Fixes: 24025c465f ("ipv4: process socket-level control messages in IPv4")
Fixes: ad1e46a837 ("ipv6: process socket-level control messages in IPv6")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:46:23 -04:00
Arnd Bergmann
a986a05de9 net: qrtr: fix build problems
Having multiple loadable modules with the same name cannot work
with modprobe, and having both net/qrtr/smd.ko and drivers/soc/qcom/smd.ko
results in a (somewhat cryptic) build error:

ERROR: "qcom_smd_driver_unregister" [net/qrtr/smd.ko] undefined!
ERROR: "qcom_smd_driver_register" [net/qrtr/smd.ko] undefined!
ERROR: "qcom_smd_set_drvdata" [net/qrtr/smd.ko] undefined!
ERROR: "qcom_smd_send" [net/qrtr/smd.ko] undefined!
ERROR: "qcom_smd_get_drvdata" [net/qrtr/smd.ko] undefined!
ERROR: "qcom_smd_driver_unregister" [drivers/soc/qcom/wcnss_ctrl.ko] undefined!
ERROR: "qcom_smd_driver_register" [drivers/soc/qcom/wcnss_ctrl.ko] undefined!
ERROR: "qcom_smd_set_drvdata" [drivers/soc/qcom/wcnss_ctrl.ko] undefined!
ERROR: "qcom_smd_send" [drivers/soc/qcom/wcnss_ctrl.ko] undefined!
ERROR: "qcom_smd_get_drvdata" [drivers/soc/qcom/wcnss_ctrl.ko] undefined!

Also, the qrtr driver uses the SMD interface and has a Kconfig dependency,
but also allows for compile-testing when SMD is disabled. However, if
with QCOM_SMD=m and COMPILE_TEST=y we can end up with QRTR_SMD=y and
that fails with a related link error.

The changes the dependency so we can still compile-test the driver but
not have it built-in if SMD is a module, to avoid running in the broken
configuration, and changes the Makefile to provide the driver under
a different module name.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: bdabad3e36 ("net: Add Qualcomm IPC router")
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:44:58 -04:00
David S. Miller
148bd3a34b Merge branch 'tc_flower_offload'
Amir Vadai says:

====================
sched,mlx5: Offloaded TC flower filter statistics

This patchset introduces counters support for offloaded cls_flower filters.
When the user calls 'tc show -s ..', fl_dump is called.
Before fl_dump() returns the statistics, it calls the NIC driver (using a new
ndo_setup_tc() command - TC_CLSFLOWER_STATS) to read the hardware counters and
update the statistics accordingly. A new TC action op was added (stats_update())
to be used by the NIC driver to update the statistics.

Patchset was applied and tested over commit ed7cbbc ("udp: Resolve NULL pointer
dereference over flow-based vxlan device")
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:52 -04:00
Amir Vadai
aad7e08d39 net/mlx5e: Hardware offloaded flower filter statistics support
Introduce support in updating statistics of offloaded TC flower
classifiers. Currently only the DROP action is supported.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:51 -04:00
Amir Vadai
43a335e055 net/mlx5_core: Flow counters infrastructure
If a counter has the aging flag set when created, it is added to a list
of counters that will be queried periodically from a workqueue.  query
result and last use timestamp are cached.
add/del counter must be very efficient since thousands of such
operations might be issued in a second.
There is only a single reference to counters without aging, therefore
no need for locks.
But, counters with aging enabled are stored in a list. In order to make
code as lockless as possible, all the list manipulation and access to
hardware is done from a single context - the periodic counters query
thread.

The hardware supports multiple counters per FTE, however currently we
are using one counter for each FTE.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:51 -04:00
Amir Vadai
bd5251dbf1 net/mlx5_core: Introduce flow steering destination of type counter
When adding a flow steering rule with a counter, need to supply a
destination of type MLX5_FLOW_DESTINATION_TYPE_COUNTER, with a pointer
to a struct mlx5_fc.
Also, MLX5_FLOW_CONTEXT_ACTION_COUNT bit should be set in the action.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:51 -04:00
Amir Vadai
9dc0b289c4 net/mlx5_core: Firmware commands to support flow counters
Getting packet/byte statistics on flows is done through flow counters.
Implement the firmware commands to alloc, free and query flow counters.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:51 -04:00
Amir Vadai
42ca502e17 net/mlx5_core: Use a macro in mlx5_command_str()
Use a macro instead of copying the OP name.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:51 -04:00
Amir Vadai
10cbc68434 net/sched: cls_flower: Hardware offloaded filters statistics support
Introduce a new command in ndo_setup_tc() for hardware offloaded
filters, to call the NIC driver, and make it update the statistics.
This will be done before dumping the filter and its statistics.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:50 -04:00
Amir Vadai
9fea47d93b net/sched: act_gact: Update statistics when offloaded to hardware
Implement the stats_update callback that will be called by NIC drivers
for hardware offloaded filters.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:50 -04:00
Amir Vadai
3804070235 net/sched: Enable netdev drivers to update statistics of offloaded actions
Introduce stats_update callback. netdev driver could call it for offloaded
actions to update the basic statistics (packets, bytes and last use).
Since bstats_update() and bstats_cpu_update() use skb as an argument to
get the counters, _bstats_update() and _bstats_cpu_update(), that get
bytes and packets as arguments, were added.

Signed-off-by: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:43:50 -04:00
David S. Miller
388665a9be Merge branch 'pxa168_eth-perf'
Jisheng Zhang says:

====================
net: pxa168_eth: improve performance

This series is to improve the pxa168_eth driver performance by using
{readl|writel}_relaxed or appropriate memory barriers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:39:50 -04:00
Jisheng Zhang
b17d15592d net: pxa168_eth: Use dma_wmb/rmb where appropriate
Update the pxa168_eth driver to use the dma_rmb/wmb calls instead of the
full barriers in order to improve performance: reduced 97ns/39ns on
average in tx/rx path on Marvell BG4CT platform.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:39:49 -04:00
Jisheng Zhang
3ed687823c net: pxa168_eth: use {readl|writel}_relaxed instead of readl/writel
Since appropriate memory barriers are already there, use the relaxed
version to improve performance a bit.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:39:49 -04:00
Jiri Benc
8be0cfa4d3 vxlan: set mac_header correctly in GPE mode
For VXLAN-GPE, the interface is ARPHRD_NONE, thus we need to reset
mac_header after pulling the outer header.

v2: Put the code to the existing conditional block as suggested by
    Shmulik Ladkani.

Fixes: e1e5314de0 ("vxlan: implement GPE")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:37:10 -04:00
David S. Miller
41ae56ce35 Merge branch 'xen-netback-control-ring'
Paul Durrant says:

====================
xen-netback: support for control ring

My recent patch to import an up-to-date include/xen/interface/io/netif.h
from the Xen Project brought in the necessary definitions to support the
new control shared ring and protocol. This patch series updates xen-netback
to support the new ring.

Patch #1 adds the necessary boilerplate to map the control ring and handle
messages. No implementation of the new protocol is included in this patch
so that it can be kept to a reasonable size.

Patch #2 adds the protocol implementation.

Patch #3 adds support for passing has values calculated by xen-netback to
capable frontends.

Patch #4 adds support for accepting hash values calculated by capable
frontends and using them the set the socket buffer hash.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:35:57 -04:00
Paul Durrant
c2d09fde72 xen-netback: use hash value from the frontend
My recent patch to include/xen/interface/io/netif.h defines a new extra
info type that can be used to pass hash values between backend and guest
frontend.

This patch adds code to xen-netback to use the value in a hash extra
info fragment passed from the guest frontend in a transmit-side
(i.e. netback receive side) packet to set the skb hash accordingly.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:35:56 -04:00
Paul Durrant
f07f989338 xen-netback: pass hash value to the frontend
My recent patch to include/xen/interface/io/netif.h defines a new extra
info type that can be used to pass hash values between backend and guest
frontend.

This patch adds code to xen-netback to pass hash values calculated for
guest receive-side packets (i.e. netback transmit side) to the frontend.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:35:56 -04:00
Paul Durrant
40d8abdee8 xen-netback: add control protocol implementation
My recent patch to include/xen/interface/io/netif.h defines a new shared
ring (in addition to the rx and tx rings) for passing control messages
from a VM frontend driver to a backend driver.

A previous patch added the necessary boilerplate for mapping the control
ring from the frontend, should it be created. This patch adds
implementations for each of the defined protocol messages.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:35:56 -04:00
Paul Durrant
4e15ee2cb4 xen-netback: add control ring boilerplate
My recent patch to include/xen/interface/io/netif.h defines a new shared
ring (in addition to the rx and tx rings) for passing control messages
from a VM frontend driver to a backend driver.

This patch adds the necessary code to xen-netback to map this new shared
ring, should it be created by a frontend, but does not add implementations
for any of the defined protocol messages. These are added in a subsequent
patch for clarity.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:35:56 -04:00
David S. Miller
1ca4673432 Merge branch 'cls_u32_hw_sw'
Sridhar Samudrala says:

====================
Enable SW only or HW only offloads with u32 classifier

This set of patches export TCA_CLS_FLAGS_SKIP_HW to userspace and also
introduces another flag TCA_CLS_FLAGS_SKIP_SW. These flags enable offloading
u32 filters to either SW or HW only.

The default semantics with no flags is to add the filter to HW if possible and
also into SW.
With SKIP_HW flag, the filter is only added to SW.
With SKIP_SW flag, the filter is added to HW and an error is returned
to user on failure.
These flags are mutually exclusive.
There was an earlier discussion on these semantics in the following email
thread.
	http://thread.gmane.org/gmane.linux.network/401733
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:30:57 -04:00
Samudrala, Sridhar
d34e3e1813 net: cls_u32: Add support for skip-sw flag to tc u32 classifier.
On devices that support TC U32 offloads, this flag enables a filter to be
added only to HW. skip-sw and skip-hw are mutually exclusive flags. By
default without any flags, the filter is added to both HW and SW, but no
error checks are done in case of failure to add to HW. With skip-sw,
failure to add to HW is treated as an error.

Here is a sample script that adds 2 filters, one with skip-sw and the other
with skip-hw flag.

   # add ingress qdisc
   tc qdisc add dev p4p1 ingress

   # enable hw tc offload.
   ethtool -K p4p1 hw-tc-offload on

   # add u32 filter with skip-sw flag.
   tc filter add dev p4p1 parent ffff: protocol ip prio 99 \
      handle 800:0:1 u32 ht 800: flowid 800:1 \
      skip-sw \
      match ip src 192.168.1.0/24 \
      action drop

   # add u32 filter with skip-hw flag.
   tc filter add dev p4p1 parent ffff: protocol ip prio 99 \
      handle 800:0:2 u32 ht 800: flowid 800:2 \
      skip-hw \
      match ip src 192.168.2.0/24 \
      action drop

Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:30:57 -04:00
Samudrala, Sridhar
760edee8b5 net: sched: Move TCA_CLS_FLAGS_SKIP_HW to uapi header file.
Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:30:56 -04:00
David S. Miller
860d7ef64d Merge branch 'hv_netvsc-races'
Vitaly Kuznetsov says:

====================
hv_netvsc: avoid races on mtu change/set channels

Changes since v1:
- Rebased to net-next [Haiyang Zhang]

Original description:

MTU change and set channels operations are implemented as netvsc device
re-creation destroying internal structures (struct net_device stays). This
is really unfortunate but there is no support from Hyper-V host to do it
in a different way. Such re-creation is unsurprisingly racy, Haiyang
reported a crash when netvsc_change_mtu() is racing with
netvsc_link_change() but I was able to identify additional races upon
investigation. Both netvsc_set_channels() and netvsc_change_mtu() race
against:
1) netvsc_link_change()
2) netvsc_remove()
3) netvsc_send()

To solve these issues without introducing new locks some refactoring is
required. We need to get rid of very complex link graph in all the
internal structures and avoid traveling through structures which are being
removed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:26:01 -04:00
Vitaly Kuznetsov
8809883482 hv_netvsc: set nvdev link after populating chn_table
Crash in netvsc_send() is observed when netvsc device is re-created on
mtu change/set channels. The crash is caused by dereferencing of NULL
channel pointer which comes from chn_table. The root cause is a mixture
of two facts:
- we set nvdev pointer in net_device_context in alloc_net_device()
  before we populate chn_table.
- we populate chn_table[0] only.

The issue could be papered over by checking channel != NULL in
netvsc_send() but populating the whole chn_table and writing the
nvdev pointer afterwards seems more appropriate.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:26:01 -04:00
Vitaly Kuznetsov
6da7225f5a hv_netvsc: synchronize netvsc_change_mtu()/netvsc_set_channels() with netvsc_remove()
When netvsc device is removed during mtu change or channels setup we get
into troubles as both paths are trying to remove the device. Synchronize
them with start_remove flag and rtnl lock.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:26:01 -04:00
Vitaly Kuznetsov
0a1275ca51 hv_netvsc: get rid of struct net_device pointer in struct netvsc_device
Simplify netvsvc pointer graph by getting rid of the redundant ndev
pointer. We can always get a pointer to struct net_device from somewhere
else.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:26:00 -04:00
Vitaly Kuznetsov
3d541ac5a9 hv_netvsc: untangle the pointer mess
We have the following structures keeping netvsc adapter state:
- struct net_device
- struct net_device_context
- struct netvsc_device
- struct rndis_device
- struct hv_device
and there are pointers/dependencies between them:
- struct net_device_context is contained in struct net_device
- struct hv_device has driver_data pointer which points to
  'struct net_device' OR 'struct netvsc_device' depending on driver's
  state (!).
- struct net_device_context has a pointer to 'struct hv_device'.
- struct netvsc_device has pointers to 'struct hv_device' and
  'struct net_device_context'.
- struct rndis_device has a pointer to 'struct netvsc_device'.

Different functions get different structures as parameters and use these
pointers for traveling. The problem is (in addition to keeping in mind
this complex graph) that some of these structures (struct netvsc_device
and struct rndis_device) are being removed and re-created on mtu change
(as we implement it as re-creation of hyper-v device) so our travel using
these pointers is dangerous.

Simplify this to a the following:
- add struct netvsc_device pointer to struct net_device_context (which is
  a part of struct net_device and thus never disappears)
- remove struct hv_device and struct net_device_context pointers from
  struct netvsc_device
- replace pointer to 'struct netvsc_device' with pointer to
  'struct net_device'.
- always keep 'struct net_device' in hv_device driver_data.

We'll end up with the following 'circular' structure:

net_device:
 [net_device_context] -> netvsc_device -> rndis_device -> net_device
                      -> hv_device -> net_device

On MTU change we'll be removing the 'netvsc_device -> rndis_device'
branch and re-creating it making the synchronization easier.

There is one additional redundant pointer left, it is struct net_device
link in struct netvsc_device, it is going to be removed in a separate
commit.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:26:00 -04:00
Vitaly Kuznetsov
1bdcec8a5f hv_netvsc: use start_remove flag to protect netvsc_link_change()
netvsc_link_change() can race with netvsc_change_mtu() or
netvsc_set_channels() as these functions destroy struct netvsc_device and
rndis filter. Use start_remove flag for syncronization. As
netvsc_change_mtu()/netvsc_set_channels() are called with rtnl lock held
we need to take it before checking start_remove value in
netvsc_link_change().

Reported-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:26:00 -04:00
Vitaly Kuznetsov
f580aec4bf hv_netvsc: move start_remove flag to net_device_context
struct netvsc_device is destroyed on mtu change so keeping the
protection flag there is not a good idea. Move it to struct
net_device_context which is preserved.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:26:00 -04:00
Uwe Kleine-König
da47b45720 phy: add support for a reset-gpio specification
The framework only asserts (for now) that the reset gpio is not active.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-16 13:22:53 -04:00
David S. Miller
f23e0f6507 Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
40GbE Intel Wired LAN Driver Updates 2016-05-14

This series contains updates to i40e and i40evf.

Kevin adds support to disable link on all ports and changes bits set
for telling firmware the PHY needs to be modified by the driver.

Anjali adds a feature to enable/disable all multicast for a trusted
VF.  Added priv-flag knob to configure global true promiscuous
support.

Shannon adds the support code for calling the admin queue API call
aq_set_switch_config().

Mitch modifies the VF, to log a message if an untrusted VF attempts to
configure promiscuous mode, but lies to it and returns everything is ok
instead of returning an error.  Corrects the logic for reporting the
receive packet hash.  Fixed the adding of a broadcast filter for VFs,
since that all VSIs are configured to receive broadcasts as default,
so do not need to add a filter.

Catherine refactors the ethtool get_settings to report the possible
supported link modes from what we know about the current PHY type and
that with the firmware supported PHY types.

Jacob changes the driver to use WARN_ONCE in order to highlight the
issue, but do not display a warning every time when receive hang
message is received.

Akeem corrects receive ptype payload layer for non_tunneled IPv6, when
it should be layer 4 for UDP, instead of layer 3.

Dan Carpenter fixes an uninitialized variable bug.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:47:27 -04:00
David S. Miller
bf14e9ec80 Merge branch 'bnxt_en-next'
Michael Chan says:

====================
bnxt_en: updates for net-next.

Non-critical bug fixes, improvements, a new ethtool feature, and a new
device ID.

v2: Fixed a bug in bnxt_get_module_eeprom() found by Ben Hutchings.

Ajit Khaparde (2):
  bnxt_en: Add Support for ETHTOOL_GMODULEINFO and ETHTOOL_GMODULEEEPRO
  bnxt_en: Report PCIe link speed and width during driver load

Michael Chan (6):
  bnxt_en: Reduce maximum ring pages if page size is 64K.
  bnxt_en: Improve the delay logic for firmware response.
  bnxt_en: Fix length value in dmesg log firmware error message.
  bnxt_en: Simplify and improve unsupported SFP+ module reporting.
  bnxt_en: Add BCM57314 device ID.
  bnxt_en: Use dma_rmb() instead of rmb().

Satish Baddipadige (1):
  bnxt_en: Fix invalid max channel parameter in ethtool -l.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:49 -04:00
Michael Chan
b67daab033 bnxt_en: Use dma_rmb() instead of rmb().
Use the weaker but more appropriate dma_rmb() to order the reading of
the completion ring.

Suggested-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:48 -04:00
Michael Chan
5049e33b55 bnxt_en: Add BCM57314 device ID.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:48 -04:00
Michael Chan
10289bec00 bnxt_en: Simplify and improve unsupported SFP+ module reporting.
The current code is more complicated than necessary and can only report
unsupported SFP+ module if it is plugged in after the device is up.

Rename bnxt_port_module_event() to bnxt_get_port_module_status().  We
already have the current module_status in the link_info structure, so
just check that and report any unsupported SFP+ module status.  Delete
the unnecessary last_port_module_event.  Call this function at the
end of bnxt_open to report unsupported module already plugged in.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:48 -04:00
Michael Chan
8578d6c19a bnxt_en: Fix length value in dmesg log firmware error message.
The len value in the hwrm error message is wrong.  Use the properly adjusted
value in the variable len.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:48 -04:00
Michael Chan
a11fa2be6d bnxt_en: Improve the delay logic for firmware response.
The current code has 2 problems:

1. The maximum wait time is not long enough.  It is about 60% of the
duration specified by the firmware.  It is calling usleep_range(600, 800)
for every 1 msec we are supposed to wait.

2. The granularity of the delay is too coarse.  Many simple firmware
commands finish in 25 usec or less.

We fix these 2 issues by multiplying the original 1 msec loop counter by
40 and calling usleep_range(25, 40) for each iteration.

There is also a second delay loop to wait for the last DMA word to
complete.  This delay loop should be a very short 5 usec wait.

This change results in much faster bring-up/down time:

Before the patch:

time ip link set p4p1 up

real    0m0.120s
user    0m0.001s
sys     0m0.009s

After the patch:

time ip link set p4p1 up

real    0m0.030s
user    0m0.000s
sys     0m0.010s

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:48 -04:00
Michael Chan
d0a42d6fc8 bnxt_en: Reduce maximum ring pages if page size is 64K.
The chip supports 4K/8K/64K page sizes for the rings and we try to
match it to the CPU PAGE_SIZE.  The current page size limits for the rings
are based on 4K/8K page size. If the page size is 64K, these limits are
too large.  Reduce them appropriately.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:48 -04:00
Ajit Khaparde
90c4f788f6 bnxt_en: Report PCIe link speed and width during driver load
Add code to log a message during driver load indicating PCIe link
speed and width.

The log message will look like this:
bnxt_en 0000:86:00.0 eth0: PCIe: Speed 8.0GT/s Width x8

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:47 -04:00
Ajit Khaparde
42ee18fe4c bnxt_en: Add Support for ETHTOOL_GMODULEINFO and ETHTOOL_GMODULEEEPRO
Add support to fetch the SFP EEPROM settings from the firmware
and display it via the ethtool -m command.  We support SFP+ and QSFP
modules.

v2: Fixed a bug in bnxt_get_module_eeprom() found by Ben Hutchings.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:47 -04:00
Satish Baddipadige
18d6e4e2d8 bnxt_en: Fix invalid max channel parameter in ethtool -l.
When there is only 1 MSI-X vector or in INTA mode, tx and rx pre-set
max channel parameters are shown incorrectly in ethtool -l.  With only 1
vector, bnxt_get_max_rings() will return -ENOMEM.  bnxt_get_channels
should check this return value, and set max_rx/max_tx to 0 if it is
non-zero.

Signed-off-by: Satish Baddipadige <sbaddipa@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:35:47 -04:00
David S. Miller
909b27f706 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The nf_conntrack_core.c fix in 'net' is not relevant in 'net-next'
because we no longer have a per-netns conntrack hash.

The ip_gre.c conflict as well as the iwlwifi ones were cases of
overlapping changes.

Conflicts:
	drivers/net/wireless/intel/iwlwifi/mvm/tx.c
	net/ipv4/ip_gre.c
	net/netfilter/nf_conntrack_core.c

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-15 13:32:48 -04:00
Linus Torvalds
272911b889 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix mvneta/bm dependencies, from Arnd Bergmann.

 2) RX completion hw bug workaround in bnxt_en, from Michael Chan.

 3) Kernel pointer leak in nf_conntrack, from Linus.

 4) Hoplimit route attribute limits not enforced properly, from Paolo
    Abeni.

 5) qlcnic driver NULL deref fix from Dan Carpenter.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  arm64: bpf: jit JMP_JSET_{X,K}
  net/route: enforce hoplimit max value
  nf_conntrack: avoid kernel pointer value leak in slab name
  drivers: net: xgene: fix register offset
  drivers: net: xgene: fix statistics counters race condition
  drivers: net: xgene: fix ununiform latency across queues
  drivers: net: xgene: fix sharing of irqs
  drivers: net: xgene: fix IPv4 forward crash
  xen-netback: fix extra_info handling in xenvif_tx_err()
  net: mvneta: bm: fix dependencies again
  bnxt_en: Add workaround to detect bad opaque in rx completion (part 2)
  bnxt_en: Add workaround to detect bad opaque in rx completion (part 1)
  qlcnic: potential NULL dereference in qlcnic_83xx_get_minidump_template()
2016-05-14 14:15:06 -07:00
Florian Fainelli
8fbb89c6fb net: switchdev: Drop EXPERIMENTAL from description
Switchdev has been around for quite a while now, putting "EXPERIMENTAL"
in the description is no longer accurate, drop it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-14 17:06:37 -04:00
Zi Shen Lim
98397fc547 arm64: bpf: jit JMP_JSET_{X,K}
Original implementation commit e54bcde3d6 ("arm64: eBPF JIT compiler")
had the relevant code paths, but due to an oversight always fail jiting.

As a result, we had been falling back to BPF interpreter whenever a BPF
program has JMP_JSET_{X,K} instructions.

With this fix, we confirm that the corresponding tests in lib/test_bpf
continue to pass, and also jited.

...
[    2.784553] test_bpf: #30 JSET jited:1 188 192 197 PASS
[    2.791373] test_bpf: #31 tcpdump port 22 jited:1 325 677 625 PASS
[    2.808800] test_bpf: #32 tcpdump complex jited:1 323 731 991 PASS
...
[    3.190759] test_bpf: #237 JMP_JSET_K: if (0x3 & 0x2) return 1 jited:1 110 PASS
[    3.192524] test_bpf: #238 JMP_JSET_K: if (0x3 & 0xffffffff) return 1 jited:1 98 PASS
[    3.211014] test_bpf: #249 JMP_JSET_X: if (0x3 & 0x2) return 1 jited:1 120 PASS
[    3.212973] test_bpf: #250 JMP_JSET_X: if (0x3 & 0xffffffff) return 1 jited:1 89 PASS
...

Fixes: e54bcde3d6 ("arm64: eBPF JIT compiler")
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Yang Shi <yang.shi@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-14 16:11:45 -04:00