platform/kernel/linux-exynos.git
10 years agoamd-xgbe-phy: Checkpatch driver fixes
Lendacky, Thomas [Wed, 3 Sep 2014 17:14:39 +0000 (12:14 -0500)]
amd-xgbe-phy: Checkpatch driver fixes

This patch contains fixes identified by checkpatch when run with the
strict option.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoamd-xgbe: Checkpatch driver fixes
Lendacky, Thomas [Wed, 3 Sep 2014 17:14:33 +0000 (12:14 -0500)]
amd-xgbe: Checkpatch driver fixes

This patch contains fixes identified by checkpatch when run with the
strict option.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoamd-xgbe-phy: Enhance parallel detection to support KR speed
Lendacky, Thomas [Wed, 3 Sep 2014 17:14:22 +0000 (12:14 -0500)]
amd-xgbe-phy: Enhance parallel detection to support KR speed

Add support to allow parallel detection to work in KR speed. With
both speed modes of KX and KR supported, KX must be checked first.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoamd-xgbe-phy: Check device for current speed mode (KR/KX)
Lendacky, Thomas [Wed, 3 Sep 2014 17:14:16 +0000 (12:14 -0500)]
amd-xgbe-phy: Check device for current speed mode (KR/KX)

Since device resets can change the current mode it's possible to think
the device is in a different mode than it actually is.  Rather than
trying to determine every place that is needed to set/save the current
mode, be safe and check the devices actual mode when needed rather than
trying to track it.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'r8152-next'
David S. Miller [Fri, 5 Sep 2014 19:17:39 +0000 (12:17 -0700)]
Merge branch 'r8152-next'

Hayes Wang says:

====================
r8152: random MAC address

If the interface has invalid MAC address, it couldn't
be used. In order to let it work normally, give a
random one.

v3:
  Remove
ether_addr_copy(dev->perm_addr, dev->dev_addr);

v2:
  Use "%pM" format specifier for printing a MAC address.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8152: use eth_hw_addr_random
hayeswang [Thu, 4 Sep 2014 08:15:42 +0000 (16:15 +0800)]
r8152: use eth_hw_addr_random

If the hw doesn't have a valid MAC address, give a random one and
set it to the hw.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8152: change the location of rtl8152_set_mac_address
hayeswang [Thu, 4 Sep 2014 08:15:41 +0000 (16:15 +0800)]
r8152: change the location of rtl8152_set_mac_address

Exchange the location of rtl8152_set_mac_address() and
set_ethernet_addr(). Then, the set_ethernet_addr() could
set the MAC address by calling rtl8152_set_mac_address()
later.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'rx_copybreak'
David S. Miller [Fri, 5 Sep 2014 19:12:32 +0000 (12:12 -0700)]
Merge branch 'rx_copybreak'

Govindarajulu Varadarajan says:

====================
enic: Add support for rx_copybreak

The following series implements rx_copybreak.

dma_map_single()/dma_unmap_single() is more expensive than alloc_skb & memcpy
for smaller packets. By doing this we can reuse the dma buff which is already
mapped. This is very useful when iommu is on. The default skb copybreak value
is 256.

When iommu is on, we can go much higher than 256. All the drivers that supports
rx_copybreak provides module parameter to change this value. Since module
parameter is the least preferred way for changing driver values, this series
adds ethtool support for setting rx_copybreak.

v4:
Validate tunable length in ethtool_get_tunable, not in driver implemented
function.

Loose tunable_ops array for each tunable type. Define one function and let the
driver use switch case for each type.

Use double underscore for data type in UAPI headers.
Use const qualifier where possible.

v3:
Add tunable namespace to ethtool. Use new ethtool cmd ETHTOOL_S/GTUNABLE to
set/get rx_copybreak from userspace.

v2:
Add new ethtool_cmd for DMA buffer parameters, instead of adding new members to
existing ethtool_ringparam.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoenic: Add tunable_ops support for rx_copybreak
Govindarajulu Varadarajan [Tue, 2 Sep 2014 21:47:21 +0000 (03:17 +0530)]
enic: Add tunable_ops support for rx_copybreak

This patch adds support for setting/getting rx_copybreak using
generic ethtool tunable.

Defines enic_get_tunable() & enic_set_tunable() to get/set rx_copybreak.
As of now, these two function supports only rx_copybreak.

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoethtool: Add generic options for tunables
Govindarajulu Varadarajan [Tue, 2 Sep 2014 21:47:20 +0000 (03:17 +0530)]
ethtool: Add generic options for tunables

This patch adds new ethtool cmd, ETHTOOL_GTUNABLE & ETHTOOL_STUNABLE for getting
tunable values from driver.

Add get_tunable and set_tunable to ethtool_ops. Driver implements these
functions for getting/setting tunable value.

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoenic: implement rx_copybreak
Govindarajulu Varadarajan [Tue, 2 Sep 2014 21:47:19 +0000 (03:17 +0530)]
enic: implement rx_copybreak

Calling dma_map_single()/dma_unmap_single() is quite expensive compared
to copying a small packet. So let's copy short frames and keep the buffers
mapped.

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodev_ioctl: remove dev_load() CAP_SYS_MODULE message
Daniel Borkmann [Tue, 2 Sep 2014 21:30:05 +0000 (23:30 +0200)]
dev_ioctl: remove dev_load() CAP_SYS_MODULE message

Marcel reported to see the following message when autoloading
is being triggered when adding nlmon device:

  Loading kernel module for a network device with
  CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias
  netdev-nlmon instead.

This false-positive happens despite with having correct
capabilities set, e.g. through issuing `ip link del dev nlmon`
more than once on a valid device with name nlmon, but Marcel
has also seen it on creation time when no nlmon module is
previously compiled-in or loaded as module and the device
name equals a link type name (e.g. nlmon, vxlan, team).

Stephen says:

  The netdev module alias is a hold over from the past. For
  normal devices, people used to create a alias eth0 to and
  point it to the type of network device used, that was back
  in the bad old ISA days before real discovery.

  Also, the tunnels create module alias for the control device
  and ip used to use this to autoload the tunnel device.

  The message is bogus and should just be removed, I also see
  it in a couple of other cases where tap devices are renamed
  for other usese.

As mentioned in 8909c9ad8ff0 ("net: don't allow CAP_NET_ADMIN
to load non-netdev kernel modules"), we nevertheless still
might want to leave the old autoloading behaviour in place
as it could break old scripts, so for now, lets just remove
the log message as Stephen suggests.

Reference: http://thread.gmane.org/gmane.linux.kernel/1105168
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Suggested-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bpf: make eBPF interpreter images read-only
Daniel Borkmann [Tue, 2 Sep 2014 20:53:44 +0000 (22:53 +0200)]
net: bpf: make eBPF interpreter images read-only

With eBPF getting more extended and exposure to user space is on it's way,
hardening the memory range the interpreter uses to steer its command flow
seems appropriate.  This patch moves the to be interpreted bytecode to
read-only pages.

In case we execute a corrupted BPF interpreter image for some reason e.g.
caused by an attacker which got past a verifier stage, it would not only
provide arbitrary read/write memory access but arbitrary function calls
as well. After setting up the BPF interpreter image, its contents do not
change until destruction time, thus we can setup the image on immutable
made pages in order to mitigate modifications to that code. The idea
is derived from commit 314beb9bcabf ("x86: bpf_jit_comp: secure bpf jit
against spraying attacks").

This is possible because bpf_prog is not part of sk_filter anymore.
After setup bpf_prog cannot be altered during its life-time. This prevents
any modifications to the entire bpf_prog structure (incl. function/JIT
image pointer).

Every eBPF program (including classic BPF that are migrated) have to call
bpf_prog_select_runtime() to select either interpreter or a JIT image
as a last setup step, and they all are being freed via bpf_prog_free(),
including non-JIT. Therefore, we can easily integrate this into the
eBPF life-time, plus since we directly allocate a bpf_prog, we have no
performance penalty.

Tested with seccomp and test_bpf testsuite in JIT/non-JIT mode and manual
inspection of kernel_page_tables.  Brad Spengler proposed the same idea
via Twitter during development of this patch.

Joint work with Hannes Frederic Sowa.

Suggested-by: Brad Spengler <spender@grsecurity.net>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Kees Cook <keescook@chromium.org>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: systemport: update UMAC_CMD only when link is detected
Florian Fainelli [Tue, 2 Sep 2014 18:17:07 +0000 (11:17 -0700)]
net: systemport: update UMAC_CMD only when link is detected

When we bring the interface down, phy_stop() will schedule the PHY
state machine to call our link adjustment callback. By the time we do so,
we may have clock gated off the SYSTEMPORT hardware block, and this will
cause bus errors to happen in bcm_sysport_adj_link():

Make sure that we only touch the UMAC_CMD register when there is an
actual link. This is safe to do for two reasons:

- updating the Ethernet MAC registers only make sense when a physical
  link is present
- the PHY library state machine first set phydev->link = 0 before
  invoking phydev->adjust_link in the PHY_HALTED case

This is a similar fix to the GENET one:
c677ba8b3c47650358572091ed8a6af50bfca877 ("net: bcmgenet: update
UMAC_CMD only when link is detected").

Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv4: implement igmp_qrv sysctl to tune igmp robustness variable
Hannes Frederic Sowa [Tue, 2 Sep 2014 13:49:26 +0000 (15:49 +0200)]
ipv4: implement igmp_qrv sysctl to tune igmp robustness variable

As in IPv6 people might increase the igmp query robustness variable to
make sure unsolicited state change reports aren't lost on the network. Add
and document this new knob to igmp code.

RFCs allow tuning this parameter back to first IGMP RFC, so we also use
this setting for all counters, including source specific multicast.

Also take over sysctl value when upping the interface and don't reuse
the last one seen on the interface.

Cc: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv6: add sysctl_mld_qrv to configure query robustness variable
Hannes Frederic Sowa [Tue, 2 Sep 2014 13:49:25 +0000 (15:49 +0200)]
ipv6: add sysctl_mld_qrv to configure query robustness variable

This patch adds a new sysctl_mld_qrv knob to configure the mldv1/v2 query
robustness variable. It specifies how many retransmit of unsolicited mld
retransmit should happen. Admins might want to tune this on lossy links.

Also reset mld state on interface down/up, so we pick up new sysctl
settings during interface up event.

IPv6 certification requests this knob to be available.

I didn't make this knob netns specific, as it is mostly a setting in a
physical environment and should be per host.

Cc: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomlx4_en: Convert the normal skb free path to dev_consume_skb_any()
Rick Jones [Wed, 3 Sep 2014 16:18:00 +0000 (09:18 -0700)]
mlx4_en: Convert the normal skb free path to dev_consume_skb_any()

It would appear the mlx4_en driver was still making a call to
dev_kfree_skb_any() where dev_consume_skb_any() would be more
appropriate.  This should make dropped packet profiling/tracking
easier/better over a NIC driven by mlx4_en.

Signed-off-by: Rick Jones <rick.jones2@hp.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agolib/rhashtable: allow user to set the minimum shifts of shrinking
Ying Xue [Wed, 3 Sep 2014 01:22:36 +0000 (09:22 +0800)]
lib/rhashtable: allow user to set the minimum shifts of shrinking

Although rhashtable library allows user to specify a quiet big size
for user's created hash table, the table may be shrunk to a
very small size - HASH_MIN_SIZE(4) after object is removed from
the table at the first time. Subsequently, even if the total amount
of objects saved in the table is quite lower than user's initial
setting in a long time, the hash table size is still dynamically
adjusted by rhashtable_shrink() or rhashtable_expand() each time
object is inserted or removed from the table. However, as
synchronize_rcu() has to be called when table is shrunk or
expanded by the two functions, we should permit user to set the
minimum table size through configuring the minimum number of shifts
according to user specific requirement, avoiding these expensive
actions of shrinking or expanding because of calling synchronize_rcu().

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqdisc: validate frames going through the direct_xmit path
Jesper Dangaard Brouer [Wed, 3 Sep 2014 15:56:09 +0000 (17:56 +0200)]
qdisc: validate frames going through the direct_xmit path

In commit 50cbe9ab5f8d ("net: Validate xmit SKBs right when we
pull them out of the qdisc") the validation code was moved out of
dev_hard_start_xmit and into dequeue_skb.

However this overlooked the fact that we do not always enqueue
the skb onto a qdisc. First situation is if qdisc have flag
TCQ_F_CAN_BYPASS and qdisc is empty.  Second situation is if
there is no qdisc on the device, which is a common case for
software devices.

Originally spotted and inital patch by Alexander Duyck.
As a result Alex was seeing issues trying to connect to a
vhost_net interface after commit 50cbe9ab5f8d was applied.

Added a call to validate_xmit_skb() in __dev_xmit_skb(), in the
code path for qdiscs with TCQ_F_CAN_BYPASS flag, and in
__dev_queue_xmit() when no qdisc.

Also handle the error situation where dev_hard_start_xmit() could
return a skb list, and does not return dev_xmit_complete(rc) and
falls through to the kfree_skb(), in that situation it should
call kfree_skb_list().

Fixes:  50cbe9ab5f8d ("net: Validate xmit SKBs right when we pull them out of the qdisc")
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqdisc: exit case fixes for skb list handling in qdisc layer
Jesper Dangaard Brouer [Wed, 3 Sep 2014 10:12:50 +0000 (12:12 +0200)]
qdisc: exit case fixes for skb list handling in qdisc layer

More minor fixes to merge commit 53fda7f7f9e (Merge branch 'xmit_list')
that allows us to work with a list of SKBs.

Fixing exit cases in qdisc_reset() and qdisc_destroy(), where a
leftover requeued SKB (qdisc->gso_skb) can have the potential of
being a skb list, thus use kfree_skb_list().

This is a followup to commit 10770bc2d1 ("qdisc: adjustments for
API allowing skb list xmits").

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqdisc: adjustments for API allowing skb list xmits
Jesper Dangaard Brouer [Tue, 2 Sep 2014 14:35:33 +0000 (16:35 +0200)]
qdisc: adjustments for API allowing skb list xmits

Minor adjustments for merge commit 53fda7f7f9e (Merge branch 'xmit_list')
that allows us to work with a list of SKBs.

Update code doc to function sch_direct_xmit().

In handle_dev_cpu_collision() use kfree_skb_list() in error handling.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoethernet: arc: remove unused dev
Jingoo Han [Tue, 2 Sep 2014 01:48:11 +0000 (10:48 +0900)]
ethernet: arc: remove unused dev

Remove unused 'dev' variable from arc_emac_remove(), since it's
not being used any more.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoethernet: nvidia: Remove extra parens
David Wood [Mon, 1 Sep 2014 22:31:55 +0000 (15:31 -0700)]
ethernet: nvidia: Remove extra parens

Remove unnecessary double parenthesis around if statement.

Signed-off-by: David Wood <devel@dtwood.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'netdev_modified'
David S. Miller [Tue, 2 Sep 2014 19:58:36 +0000 (12:58 -0700)]
Merge branch 'netdev_modified'

Nicolas Dichtel says:

====================
rtnl: send notification in do_setlink()

This series ensures to call the notifier chain and to send a netlink
message when a change is done by do_setlink().

The three first patches mainly prepare the last one, which do this change.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agortnl/do_setlink(): notify when a netdev is modified
Nicolas Dichtel [Mon, 1 Sep 2014 14:07:29 +0000 (16:07 +0200)]
rtnl/do_setlink(): notify when a netdev is modified

Depending on which parameters were updated, the changes were not propagated via
the notifier chain and netlink.

The new flag has been set only when the change did not cause a call to the
notifier chain and/or to the netlink notification functions.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agortnl/do_setlink(): last arg is now a set of flags
Nicolas Dichtel [Mon, 1 Sep 2014 14:07:28 +0000 (16:07 +0200)]
rtnl/do_setlink(): last arg is now a set of flags

There is no functional changes with this commit, it only prepares the next one.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agortnl/do_setlink(): set modified when IFLA_LINKMODE is updated
Nicolas Dichtel [Mon, 1 Sep 2014 14:07:27 +0000 (16:07 +0200)]
rtnl/do_setlink(): set modified when IFLA_LINKMODE is updated

The only effect of this patch is to print a warning if IFLA_LINKMODE is updated
and a following change fails.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agortnl/do_setlink(): set modified when IFLA_TXQLEN is updated
Nicolas Dichtel [Mon, 1 Sep 2014 14:07:26 +0000 (16:07 +0200)]
rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated

The only effect of this patch is to print a warning if IFLA_TXQLEN is updated
and a following change fails.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'be2net-next'
David S. Miller [Tue, 2 Sep 2014 19:46:04 +0000 (12:46 -0700)]
Merge branch 'be2net-next'

Sathya Perla says:

====================
be2net: patch set

v2 changes: add a new line after variable declaration in patch 12.

***
Patch 1 adds a few new log messages to help debugging in failure cases.

Patch 2 uses new macros for parsing RX/TX completions and TX wrbs to
help shorten the lines.

Patch 3 adds a description for the RX counter rx_input_fifo_overflow_drop.

Patch 4 adds TX completion error statistics reporting via ethtool.

Patch 5 adds a dma_mapping_error counter and its reporting via ethtool.

Patch 6 fixes up log messages in the Lancer FW download path.

Patch 7 replaces gotos with direct return statements.

Patch 8 cleans up be_change_mtu() code by using a new macro BE_MAX_MTU

Patch 9 makes be_cmd_get_regs() routine to return an integer status
similar to other FW cmd routines in be_cmds.c

Patch 10 gets rid of TX budget as enforcing a budget on TX completion
processing in NAPI is neither suggested nor it provides a performance benefit.

Patch 11 defines and uses a new macro for_all_tx_queues_on_eq() similar
to the RX processing code.

Patch 12 queries max_tx_qs from the FW for BE3 super-nic profiles.
For those profiles, the driver cannot assume a constant BE3_MAX_TX_QS value,
as the value may change for each function.

Please consider applying this patch set to the net-next tree. Thanks!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: query max_tx_qs for BE3 super-nic profile from FW
Suresh Reddy [Tue, 2 Sep 2014 04:26:57 +0000 (09:56 +0530)]
be2net: query max_tx_qs for BE3 super-nic profile from FW

In the BE3 super-nic profile, the max_tx_qs value can vary for each function.
So the driver needs to query this value from FW instead of using the
pre-defined constant BE3_MAX_TX_QS.

Signed-off-by: Suresh Reddy <Suresh.Reddy@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: define macro for_all_tx_queues_on_eq()
Sathya Perla [Tue, 2 Sep 2014 04:26:56 +0000 (09:56 +0530)]
be2net: define macro for_all_tx_queues_on_eq()

Replace the for() loop that traverses all the TX queues on an EQ
with the macro for_all_tx_queues_on_eq(). With this expalnatory
name, the one line comment is not required anymore.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: get rid of TX budget
Sathya Perla [Tue, 2 Sep 2014 04:26:55 +0000 (09:56 +0530)]
be2net: get rid of TX budget

Enforcing a budget on the TX completion processing in NAPI doesn't
benefit performance in anyway. Just get rid of it.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: make be_cmd_get_regs() return a status
Vasundhara Volam [Tue, 2 Sep 2014 04:26:54 +0000 (09:56 +0530)]
be2net: make be_cmd_get_regs() return a status

There are a few failure cases in be_cmd_get_regs() that ideally must return
an error value. This style is used across all the routines in be_cmds.c with
this routine being an exception. This patch fixes this.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: define BE_MAX_MTU
Kalesh AP [Tue, 2 Sep 2014 04:26:53 +0000 (09:56 +0530)]
be2net: define BE_MAX_MTU

This patch defines a new macro BE_MAX_MTU to make the code in be_change_mtu()
more readable.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: remove unncessary gotos
Kalesh AP [Tue, 2 Sep 2014 04:26:52 +0000 (09:56 +0530)]
be2net: remove unncessary gotos

In cases where there is no extra code to handle an error, this patch replaces
gotos with a direct return statement.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: fix log messages in lancer FW download path
Kalesh AP [Tue, 2 Sep 2014 04:26:51 +0000 (09:56 +0530)]
be2net: fix log messages in lancer FW download path

Log messages in the Lancer FW download path have issues such as:
- a single message spanning multiple lines
- the success message is logged even in failure cases
- status codes are already logged in the FW cmd routines
This patch fixes these issues.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Add a dma_mapping_error counter in ethtool
Vasundhara Volam [Tue, 2 Sep 2014 04:26:50 +0000 (09:56 +0530)]
be2net: Add a dma_mapping_error counter in ethtool

Add a dma_mapping_error counter to count the number of packets dropped
due to DMA mapping errors.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Add TX completion error statistics in ethtool
Kalesh AP [Tue, 2 Sep 2014 04:26:49 +0000 (09:56 +0530)]
be2net: Add TX completion error statistics in ethtool

HW reports TX completion errors in TX completion. This patch adds these
counters to ethtool statistics.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: add a description for counter rx_input_fifo_overflow_drop
Sathya Perla [Tue, 2 Sep 2014 04:26:48 +0000 (09:56 +0530)]
be2net: add a description for counter rx_input_fifo_overflow_drop

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: shorten AMAP_GET/SET_BITS() macro calls
Sathya Perla [Tue, 2 Sep 2014 04:26:47 +0000 (09:56 +0530)]
be2net: shorten AMAP_GET/SET_BITS() macro calls

The AMAP_GET/SET_BITS() macro calls take structure name as a parameter
and hence are long and span more than one line. Replace these calls
with a wrapper macros for RX/Tx compls and TX wrb. This results in fewer
lines and more readable code in be_main.c

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: add a few log messages
Sathya Perla [Tue, 2 Sep 2014 04:26:46 +0000 (09:56 +0530)]
be2net: add a few log messages

This patch adds the following log messages to help debugging
failure cases:
1) log FW version number: this is useful when driver initialization
fails and the FW version number cannot be queried via ethtool
2) per function resource limits for BEx chips: these values are
currently being printed only for Skyhawk and Lancer
3) PCI BAR mapping failure
4) function_mode/caps queried from FW: this helps catch any FW bugs
that could advertise wrong capabilities to the driver

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosock: deduplicate errqueue dequeue
Willem de Bruijn [Mon, 1 Sep 2014 01:30:27 +0000 (21:30 -0400)]
sock: deduplicate errqueue dequeue

sk->sk_error_queue is dequeued in four locations. All share the
exact same logic. Deduplicate.

Also collapse the two critical sections for dequeue (at the top of
the recv handler) and signal (at the bottom).

This moves signal generation for the next packet forward, which should
be harmless.

It also changes the behavior if the recv handler exits early with an
error. Previously, a signal for follow-up packets on the errqueue
would then not be scheduled. The new behavior, to always signal, is
arguably a bug fix.

For rxrpc, the change causes the same function to be called repeatedly
for each queued packet (because the recv handler == sk_error_report).
It is likely that all packets will fail for the same reason (e.g.,
memory exhaustion).

This code runs without sk_lock held, so it is not safe to trust that
sk->sk_err is immutable inbetween releasing q->lock and the subsequent
test. Introduce int err just to avoid this potential race.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet-timestamp: expand documentation
Willem de Bruijn [Mon, 1 Sep 2014 01:27:47 +0000 (21:27 -0400)]
net-timestamp: expand documentation

Expand Documentation/networking/timestamping.txt with new
interfaces and bytestream timestamping. Also minor
cleanup of the other text.

Import txtimestamp.c test of the new features.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'csums-next'
David S. Miller [Tue, 2 Sep 2014 04:36:35 +0000 (21:36 -0700)]
Merge branch 'csums-next'

Tom Herbert says:

====================
net: Checksum offload changes - Part VI

I am working on overhauling RX checksum offload. Goals of this effort
are:

- Specify what exactly it means when driver returns CHECKSUM_UNNECESSARY
- Preserve CHECKSUM_COMPLETE through encapsulation layers
- Don't do skb_checksum more than once per packet
- Unify GRO and non-GRO csum verification as much as possible
- Unify the checksum functions (checksum_init)
- Simplify code

What is in this seventh patch set:

- Add skb->csum. This allows a device or GRO to indicate that an
  invalid checksum was detected.
- Checksum unncessary to checksum complete conversions.

With these changes, I believe that the third goal of the overhaul is
now mostly achieved. In the case of no encapsulation or one layer of
encapsulation, there should only be at most one skb_checksum over
each packet (between GRO and normal path). In the case of two layers
of encapsulation, it is still possible with the right combination of
non-zero and zero UDP checksums to have >1 skb_checksum. For instance:
IP>GRE(with csum)>IP>UDP(zero csum)>VXLAN>IP>UDP(non-zero csum),
would likely necessiate an skb_checksum in GRO and normal path.
This doesn't seem like a common scenario at all so I'm inclined to
not address this now, if multiple layers of encapsulation becomes
popular we can reassess.

Note that checksum conversion shows a nice improvement for RX VXLAN when
outer UDP checksum is enabled (12.65% CPU compared to 20.94%). This
is not only from the fact that we don't need checksum calculation on
the host, but also allows GRO for VXLAN in this case. Checksum
conversion does not help send side (which still needs to perform
a checksum on host). For that we will implement remote checksum offload
in a later patch
(http://tools.ietf.org/html/draft-herbert-remotecsumoffload-00).

Please review carefully and test if possible, mucking with basic
checksum functions is always a little precarious :-)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agol2tp: Enable checksum unnecessary conversions for l2tp/UDP sockets
Tom Herbert [Sun, 31 Aug 2014 22:12:46 +0000 (15:12 -0700)]
l2tp: Enable checksum unnecessary conversions for l2tp/UDP sockets

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovxlan: Enable checksum unnecessary conversions for vxlan/UDP sockets
Tom Herbert [Sun, 31 Aug 2014 22:12:45 +0000 (15:12 -0700)]
vxlan: Enable checksum unnecessary conversions for vxlan/UDP sockets

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agogre: Add support for checksum unnecessary conversions
Tom Herbert [Sun, 31 Aug 2014 22:12:44 +0000 (15:12 -0700)]
gre: Add support for checksum unnecessary conversions

Call skb_checksum_try_convert and skb_gro_checksum_try_convert
after checksum is found present and validated in the GRE header
for normal and GRO paths respectively.

In GRO path, call skb_gro_checksum_try_convert

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoudp: Add support for doing checksum unnecessary conversion
Tom Herbert [Sun, 31 Aug 2014 22:12:43 +0000 (15:12 -0700)]
udp: Add support for doing checksum unnecessary conversion

Add support for doing CHECKSUM_UNNECESSARY to CHECKSUM_COMPLETE
conversion in UDP tunneling path.

In the normal UDP path, we call skb_checksum_try_convert after locating
the UDP socket. The check is that checksum conversion is enabled for
the socket (new flag in UDP socket) and that checksum field is
non-zero.

In the UDP GRO path, we call skb_gro_checksum_try_convert after
checksum is validated and checksum field is non-zero. Since this is
already in GRO we assume that checksum conversion is always wanted.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Infrastructure for checksum unnecessary conversions
Tom Herbert [Sun, 31 Aug 2014 22:12:42 +0000 (15:12 -0700)]
net: Infrastructure for checksum unnecessary conversions

For normal path, added skb_checksum_try_convert which is called
to attempt to convert CHECKSUM_UNNECESSARY to CHECKSUM_COMPLETE. The
primary condition to allow this is that ip_summed is CHECKSUM_NONE
and csum_valid is true, which will be the state after consuming
a CHECKSUM_UNNECESSARY.

For GRO path, added skb_gro_checksum_try_convert which is the GRO
analogue of skb_checksum_try_convert. The primary condition to allow
this is that NAPI_GRO_CB(skb)->csum_cnt == 0 and
NAPI_GRO_CB(skb)->csum_valid is set. This implies that we have consumed
all available CHECKSUM_UNNECESSARY checksums in the GRO path.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Support for csum_bad in skbuff
Tom Herbert [Sun, 31 Aug 2014 22:12:41 +0000 (15:12 -0700)]
net: Support for csum_bad in skbuff

This flag indicates that an invalid checksum was detected in the
packet. __skb_mark_checksum_bad helper function was added to set this.

Checksums can be marked bad from a driver or the GRO path (the latter
is implemented in this patch). csum_bad is checked in
__skb_checksum_validate_complete (i.e. calling that when ip_summed ==
CHECKSUM_NONE).

csum_bad works in conjunction with ip_summed value. In the case that
ip_summed is CHECKSUM_NONE and csum_bad is set, this implies that the
first (or next) checksum encountered in the packet is bad. When
ip_summed is CHECKSUM_UNNECESSARY, the first checksum after the last
one validated is bad. For example, if ip_summed == CHECKSUM_UNNECESSARY,
csum_level == 1, and csum_bad is set-- then the third checksum in the
packet is bad. In the normal path, the packet will be dropped when
processing the protocol layer of the bad checksum:
__skb_decr_checksum_unnecessary called twice for the good checksums
changing ip_summed to CHECKSUM_NONE so that
__skb_checksum_validate_complete is called to validate the third
checksum and that will fail since csum_bad is set.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8152: rename rx_buf_sz
hayeswang [Tue, 2 Sep 2014 02:27:52 +0000 (10:27 +0800)]
r8152: rename rx_buf_sz

The variable "rx_buf_sz" is used by both tx and rx buffers. Replace
it with "agg_buf_sz".

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: mdio-bcm-unimac: NULL-terminate unimac_mdio_ids
Florian Fainelli [Fri, 29 Aug 2014 19:43:56 +0000 (12:43 -0700)]
net: phy: mdio-bcm-unimac: NULL-terminate unimac_mdio_ids

drivers/net/phy/mdio-bcm-unimac.c:195:37-38: unimac_mdio_ids is not NULL
terminated at line 195

Make sure of_device_id tables are NULL terminated
Generated by: scripts/coccinelle/misc/of_table.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: dsa: make dsa_pack_type static
Florian Fainelli [Fri, 29 Aug 2014 19:42:07 +0000 (12:42 -0700)]
net: dsa: make dsa_pack_type static

net/dsa/dsa.c:624:20: sparse: symbol 'dsa_pack_type' was not declared.
Should it be static?

Fixes: 3e8a72d1dae374 ("net: dsa: reduce number of protocol hooks")
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: add slave_changelink support and use it for queue_id
Nikolay Aleksandrov [Wed, 27 Aug 2014 14:06:46 +0000 (16:06 +0200)]
bonding: add slave_changelink support and use it for queue_id

This patch adds support for slave_changelink to the bonding and uses it
to give the ability to change the queue_id of the enslaved devices via
netlink. It sets slave_maxtype and uses bond_changelink as a prototype for
bond_slave_changelink.
Example/test command after the iproute2 patch:
 ip link set eth0 type bond_slave queue_id 10

CC: David S. Miller <davem@davemloft.net>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Suggested-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotcp: whitespace fixes
stephen hemminger [Sat, 30 Aug 2014 06:32:05 +0000 (23:32 -0700)]
tcp: whitespace fixes

Fix places where there is space before tab, long lines, and
awkward if(){, double spacing etc. Add blank line after declaration/initialization.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: systemport: tell RXCHK if we are using Broadcom tags
Florian Fainelli [Thu, 28 Aug 2014 22:11:03 +0000 (15:11 -0700)]
net: systemport: tell RXCHK if we are using Broadcom tags

When Broadcom tags are enabled, e.g: when interfaced to an Ethernet
switch, make sure that we tell the RXCHK engine that it should be
expecting a 4-bytes Broadcom tag after the Ethernet MAC Source Address.

Use netdev_uses_dsa() to check for that condition since that will tell
us if a switch is attached to our network interface.

Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agopktgen: add flag NO_TIMESTAMP to disable timestamping
Jesper Dangaard Brouer [Thu, 28 Aug 2014 16:14:47 +0000 (18:14 +0200)]
pktgen: add flag NO_TIMESTAMP to disable timestamping

Then testing the TX limits of the stack, then it is useful to
be-able to disable the do_gettimeofday() timetamping on every packet.

This implements a pktgen flag NO_TIMESTAMP which will disable this
call to do_gettimeofday().

The performance change on (my system E5-2695) with skb_clone=0, goes
from TX 2,423,751 pps to 2,567,165 pps with flag NO_TIMESTAMP. Thus,
the cost of do_gettimeofday() or saving is approx 23 nanosec.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: fix tunneled GSO over IPv6
Dmitry Kravkov [Thu, 28 Aug 2014 13:54:24 +0000 (16:54 +0300)]
bnx2x: fix tunneled GSO over IPv6

Set correct bit for packed description.

Introduced in e42780b66aab88d3a82b6087bcd6095b90eecde7
    bnx2x: Utilize FW 7.10.51

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Kravkov <Dmitry.Kravkov@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: prevent incorrect byte-swap in BE
Dmitry Kravkov [Thu, 28 Aug 2014 13:54:23 +0000 (16:54 +0300)]
bnx2x: prevent incorrect byte-swap in BE

Fixes incorrectly defined struct in FW HSI for BE platform.
Affects tunneling, tx-switching and anti-spoofing.

Introduced in e42780b66aab88d3a82b6087bcd6095b90eecde7
    bnx2x: Utilize FW 7.10.51

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Kravkov <Dmitry.Kravkov@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: add name distributor resiliency queue
Erik Hugne [Thu, 28 Aug 2014 07:08:47 +0000 (09:08 +0200)]
tipc: add name distributor resiliency queue

TIPC name table updates are distributed asynchronously in a cluster,
entailing a risk of certain race conditions. E.g., if two nodes
simultaneously issue conflicting (overlapping) publications, this may
not be detected until both publications have reached a third node, in
which case one of the publications will be silently dropped on that
node. Hence, we end up with an inconsistent name table.

In most cases this conflict is just a temporary race, e.g., one
node is issuing a publication under the assumption that a previous,
conflicting, publication has already been withdrawn by the other node.
However, because of the (rtt related) distributed update delay, this
may not yet hold true on all nodes. The symptom of this failure is a
syslog message: "tipc: Cannot publish {%u,%u,%u}, overlap error".

In this commit we add a resiliency queue at the receiving end of
the name table distributor. When insertion of an arriving publication
fails, we retain it in this queue for a short amount of time, assuming
that another update will arrive very soon and clear the conflict. If so
happens, we insert the publication, otherwise we drop it.

The (configurable) retention value defaults to 2000 ms. Knowing from
experience that the situation described above is extremely rare, there
is no risk that the queue will accumulate any large number of items.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: refactor name table updates out of named packet receive routine
Erik Hugne [Thu, 28 Aug 2014 07:08:46 +0000 (09:08 +0200)]
tipc: refactor name table updates out of named packet receive routine

We need to perform the same actions when processing deferred name
table updates, so this functionality is moved to a separate
function.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8152: reduce the number of Tx
hayeswang [Thu, 28 Aug 2014 02:24:18 +0000 (10:24 +0800)]
r8152: reduce the number of Tx

Because the Tx has the features of stopping queue and aggregation,
We don't need many tx buffers. Change the tx number from 10 to 4
to reduce the usage of the memory. This could save 16K * 6 bytes
memory.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'xmit_list'
David S. Miller [Tue, 2 Sep 2014 00:40:01 +0000 (17:40 -0700)]
Merge branch 'xmit_list'

David Miller says:

====================
net: Make dev_hard_start_xmit() work fundamentally on lists

After this patch set, dev_hard_start_xmit() will work fundemantally on
any and all SKB lists.

This opens the path for a clean implementation of pulling multiple
packets out during qdisc_restart(), and then passing that blob in one
shot to dev_hard_start_xmit().

There were two main architectural blockers to this:

1) The GSO handling, we kept the original GSO head SKB around simply
   because dev_hard_start_xmit() had no way to communicate to the
   caller how far into the segmented list it was able to go.  Now it
   can, so the head GSO can be liberated immediately.

   All of the special GSO head SKB destructor et al. handling goes
   away too.

2) Validate of VLAN, CSUM, and segmentation characteristics was being
   performed inside of dev_hard_start_xmit().  If want to truly batch,
   we have to let the higher levels to this.  In particular, this is
   now dequeue_skb()'s job.

And with those two issues out of the way, it should now be trivial to
build experiments on top of this patch set, all of the framework
should be there now.  You could do something as simple as:

skb = q->dequeue(q);
if (skb)
skb = validate_xmit_skb(skb, qdisc_dev(q));
if (skb) {
struct sk_buff *new, *head = skb;
int limit = 5;

do {
new = q->dequeue(q);
if (new)
new = validate_xmit_skb(new, qdisc_dev(q));
if (new) {
skb->next = new;
skb = new;
}
} while (new && --limit);
skb = head;
}

inside of the else branch of dequeue_skb().

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: xmit_list() becomes dev_hard_start_xmit().
David S. Miller [Mon, 1 Sep 2014 22:06:40 +0000 (15:06 -0700)]
net: xmit_list() becomes dev_hard_start_xmit().

Now fundamentally we can process lists of SKBs as cheaply
as single packets.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Don't keep around original SKB when we software segment GSO frames.
David S. Miller [Sun, 31 Aug 2014 02:22:20 +0000 (19:22 -0700)]
net: Don't keep around original SKB when we software segment GSO frames.

Just maintain the list properly by returning the head of the remaining
SKB list from dev_hard_start_xmit().

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Validate xmit SKBs right when we pull them out of the qdisc.
David S. Miller [Sun, 31 Aug 2014 02:13:51 +0000 (19:13 -0700)]
net: Validate xmit SKBs right when we pull them out of the qdisc.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Separate out SKB validation logic from transmit path.
David S. Miller [Sat, 30 Aug 2014 22:17:13 +0000 (15:17 -0700)]
net: Separate out SKB validation logic from transmit path.

dev_hard_start_xmit() does two things, it first validates and
canonicalizes the SKB, then it actually sends it.

Make a set of helper functions for doing the first part.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Have xmit_list() signal more==true when appropriate.
David S. Miller [Sat, 30 Aug 2014 04:57:30 +0000 (21:57 -0700)]
net: Have xmit_list() signal more==true when appropriate.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Pass a "more" indication down into netdev_start_xmit() code paths.
David S. Miller [Sat, 30 Aug 2014 04:55:22 +0000 (21:55 -0700)]
net: Pass a "more" indication down into netdev_start_xmit() code paths.

For now it will always be false.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Move main gso loop out of dev_hard_start_xmit() into helper.
David S. Miller [Sat, 30 Aug 2014 04:19:14 +0000 (21:19 -0700)]
net: Move main gso loop out of dev_hard_start_xmit() into helper.

There is a slight policy change happening here as well.

The previous code would drop the entire rest of the GSO skb if any of
them got, for example, a congestion notification.

That makes no sense, anything NET_XMIT_MASK and below is something
like congestion or policing.  And in the congestion case it doesn't
even mean the packet was actually dropped.

Just continue until dev_xmit_complete() evaluates to false.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Create xmit_one() helper for dev_hard_start_xmit()
David S. Miller [Sat, 30 Aug 2014 04:10:01 +0000 (21:10 -0700)]
net: Create xmit_one() helper for dev_hard_start_xmit()

Hopefully making the code a bit easier to read and digest.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Do txq_trans_update() in netdev_start_xmit()
David S. Miller [Sat, 30 Aug 2014 04:07:24 +0000 (21:07 -0700)]
net: Do txq_trans_update() in netdev_start_xmit()

That way we don't have to audit every call site to make sure it is
doing this properly.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: stmmac: fix warning from Sparse for socfpga
Ley Foon Tan [Thu, 28 Aug 2014 04:59:46 +0000 (12:59 +0800)]
net: stmmac: fix warning from Sparse for socfpga

Warning:
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c:122:41:
sparse: cast removes address space of expression
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c:122:38:
sparse: incorrect type in assignment (different address spaces)

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'csums-next'
David S. Miller [Sat, 30 Aug 2014 03:41:17 +0000 (20:41 -0700)]
Merge branch 'csums-next'

Tom Herbert says:

====================
net: Checksum offload changes - Part VI

I am working on overhauling RX checksum offload. Goals of this effort
are:

- Specify what exactly it means when driver returns CHECKSUM_UNNECESSARY
- Preserve CHECKSUM_COMPLETE through encapsulation layers
- Don't do skb_checksum more than once per packet
- Unify GRO and non-GRO csum verification as much as possible
- Unify the checksum functions (checksum_init)
- Simplify code

What is in this sixth patch set:

- Clarify the specific requirements of devices returning
  CHECKSUM_UNNECESSARY (comments in skbuff.h).
- Add csum_level field to skbuff. This is used to express how
  many checksums are covered by CHECKSUM_UNNECESSARY (stores n - 1).
- Change __skb_checksum_validate_needed to "consume" each checksum
  as indicated by csum_level as layers of the the packet are parsed.
- Remove skb_pop_rcv_encapsulation, no longer needed in the new
  csum_level model.
- Allow GRO path to "consume" checksums provided in CHECKSUM_UNNECESSARY
  and to report new verfied checksums for use in normal path fallback.
- Add proper support to SCTP to accept CHECKSUM_UNNECESSARY to validate
  header CRC.
- Modify drivers to set skb->csum_level instead of setting
  skb->encapsulation to indicate validation of an encapsulated
  checksum on receive.

v2:

Allocate a new 16 bits for flags in skbuff.

Please review carefully and test if possible, mucking with basic
checksum functions is always a little precarious :-)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Set skb->csum_level for encapsulated checksum
Tom Herbert [Thu, 28 Aug 2014 04:28:01 +0000 (21:28 -0700)]
qlcnic: Set skb->csum_level for encapsulated checksum

Set skb->csum_level instead of skb->encapsulation when indicating
CHECKSUM_UNNECESSARY for an encapsulated checksum.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomlx4: Set skb->csum_level for encapsulated checksum
Tom Herbert [Thu, 28 Aug 2014 04:27:53 +0000 (21:27 -0700)]
mlx4: Set skb->csum_level for encapsulated checksum

Set skb->csum_level instead of skb->encapsulation when indicating
CHECKSUM_UNNECESSARY for an encapsulated checksum.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: Set skb->csum_level for encapsulated checksum
Tom Herbert [Thu, 28 Aug 2014 04:27:43 +0000 (21:27 -0700)]
i40evf: Set skb->csum_level for encapsulated checksum

Set skb->csum_level instead of skb->encapsulation when indicating
CHECKSUM_UNNECESSARY for an encapsulated checksum.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: Set skb->csum_level for encapsulated checksum
Tom Herbert [Thu, 28 Aug 2014 04:27:32 +0000 (21:27 -0700)]
i40e: Set skb->csum_level for encapsulated checksum

Set skb->csum_level instead of skb->encapsulation when indicating
CHECKSUM_UNNECESSARY for an encapsulated checksum.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobenet: Set skb->csum_level for encapsulated checksum
Tom Herbert [Thu, 28 Aug 2014 04:27:17 +0000 (21:27 -0700)]
benet: Set skb->csum_level for encapsulated checksum

Set skb->csum_level instead of skb->encapsulation when indicating
CHECKSUM_UNNECESSARY for an encapsulated checksum.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosctp: Change sctp to implement csum_levels
Tom Herbert [Thu, 28 Aug 2014 04:27:06 +0000 (21:27 -0700)]
sctp: Change sctp to implement csum_levels

CHECKSUM_UNNECESSARY may be applied to the SCTP CRC so we need to
appropriate account for this by decrementing csum_level. This is
done by calling __skb_dec_checksum_unnecessary.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Allow GRO to use and set levels of checksum unnecessary
Tom Herbert [Thu, 28 Aug 2014 04:26:56 +0000 (21:26 -0700)]
net: Allow GRO to use and set levels of checksum unnecessary

Allow GRO path to "consume" checksums provided in CHECKSUM_UNNECESSARY
and to report new checksums verfied for use in fallback to normal
path.

Change GRO checksum path to track csum_level using a csum_cnt field
in NAPI_GRO_CB. On GRO initialization, if ip_summed is
CHECKSUM_UNNECESSARY set NAPI_GRO_CB(skb)->csum_cnt to
skb->csum_level + 1. For each checksum verified, decrement
NAPI_GRO_CB(skb)->csum_cnt while its greater than zero. If a checksum
is verfied and NAPI_GRO_CB(skb)->csum_cnt == 0, we have verified a
deeper checksum than originally indicated in skbuf so increment
csum_level (or initialize to CHECKSUM_UNNECESSARY if ip_summed is
CHECKSUM_NONE or CHECKSUM_COMPLETE).

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Clarification of CHECKSUM_UNNECESSARY
Tom Herbert [Thu, 28 Aug 2014 04:26:46 +0000 (21:26 -0700)]
net: Clarification of CHECKSUM_UNNECESSARY

This patch:
 - Clarifies the specific requirements of devices returning
   CHECKSUM_UNNECESSARY (comments in skbuff.h).
 - Adds csum_level field to skbuff. This is used to express how
   many checksums are covered by CHECKSUM_UNNECESSARY (stores n - 1).
   This replaces the overloading of skb->encapsulation, that field is
   is now only used to indicate inner headers are valid.
 - Change __skb_checksum_validate_needed to "consume" each checksum
   as indicated by csum_level as layers of the the packet are parsed.
 - Remove skb_pop_rcv_encapsulation, no longer needed in the new
   csum_level model.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Allocate a new 16 bits for flags in skbuff
Tom Herbert [Thu, 28 Aug 2014 04:26:35 +0000 (21:26 -0700)]
net: Allocate a new 16 bits for flags in skbuff

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Use dev_consume_skb_any() in the non-drop path
Rick Jones [Thu, 28 Aug 2014 15:53:16 +0000 (08:53 -0700)]
be2net: Use dev_consume_skb_any() in the non-drop path

The be2net driver was still using dev_kfree_skb_any() in a "normal"
skb freeing path.  This rather clutters perf top -G -e skb_kfree_skb
profiling.

Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Fix sparse warnings
Yuval Mintz [Thu, 28 Aug 2014 05:07:32 +0000 (08:07 +0300)]
bnx2x: Fix sparse warnings

This fixes a sprase warning introduced recently by commit
eeed018cbfa30 ("bnx2x: Add timestamping and PTP hardware clock support"),
as well as another unrelated sparse endian issue.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoinclude/rxrpc/types.h: Remove unused header
Rasmus Villemoes [Thu, 28 Aug 2014 11:44:34 +0000 (13:44 +0200)]
include/rxrpc/types.h: Remove unused header

The header file include/rxrpc/types.h does not seem to be used
anywhere. It was orphaned by 63b6be55 "[AF_RXRPC]: Delete the old
RxRPC code.". Remove it.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoinclude/linux/phonedev.h: Remove unused header
Rasmus Villemoes [Thu, 28 Aug 2014 11:44:33 +0000 (13:44 +0200)]
include/linux/phonedev.h: Remove unused header

The header file include/linux/phonedev.h does not seem to be used
anywhere. It was orphaned by 7326446c "Staging: remove telephony
drivers". Remove it.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoinclude/linux/i82593.h: Remove unused header
Rasmus Villemoes [Thu, 28 Aug 2014 11:44:32 +0000 (13:44 +0200)]
include/linux/i82593.h: Remove unused header

The header file include/linux/i82593.h does not seem to be used
anywhere. It was orphaned by 8a594170 "drivers/net: delete intel
i825xx based znet notebook driver". Remove it.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoinclude/linux/cycx_x25.h: Remove unused header
Rasmus Villemoes [Thu, 28 Aug 2014 11:44:31 +0000 (13:44 +0200)]
include/linux/cycx_x25.h: Remove unused header

The header file include/linux/cycx_x25.h does not seem to be used
anywhere. It was orphaned by 6fcdf4facb "wanrouter: delete now
orphaned header content, files/drivers". Remove it.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: fix a potential oops
Ying Xue [Thu, 28 Aug 2014 02:02:41 +0000 (10:02 +0800)]
tipc: fix a potential oops

Commit 6c9808ce09f7 ("tipc: remove port_lock") accidentally involves
a potential bug: when tipc socket instance(tsk) is not got with given
reference number in tipc_sk_get(), tsk is set to NULL. Subsequently
we jump to exit label where to decrease socket reference counter
pointed by tsk pointer in tipc_sk_put(). However, As now tsk is NULL,
oops may happen because of touching a NULL pointer.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Erik Hugne <erik.hugne@ericsson.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: properly report internal PHYs through sysfs
Florian Fainelli [Wed, 27 Aug 2014 18:44:33 +0000 (11:44 -0700)]
net: phy: properly report internal PHYs through sysfs

Internal PHYs may not have a valid PHY interface defined, which will
show up in sysfs as "". Add an explicit check of internal PHYs to report
their interface correctly.

Fixes: 3d055d8d1c24 ("net: phy: expose PHY device interface mode")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'qlcnic-next'
David S. Miller [Sat, 30 Aug 2014 03:15:42 +0000 (20:15 -0700)]
Merge branch 'qlcnic-next'

Shahed Shaikh says:

====================
qlcnic: Feature addition and enhancements

This series contains following feature addition and enhancements,
- Update Link speed and Port type information for 83xx series adapters
- Support 0x8830 device ID
- Support for Power on Self Test (POST) feature for 83xx
- Use usleep_range() instead of msleep() for values less than 20ms
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Update version to 5.3.62
Shahed Shaikh [Wed, 27 Aug 2014 16:43:22 +0000 (12:43 -0400)]
qlcnic: Update version to 5.3.62

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMAINTAINERS: Update group email alias for qlcnic driver
Shahed Shaikh [Wed, 27 Aug 2014 16:43:21 +0000 (12:43 -0400)]
MAINTAINERS: Update group email alias for qlcnic driver

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Add support to run firmware POST
Shahed Shaikh [Wed, 27 Aug 2014 16:43:20 +0000 (12:43 -0400)]
qlcnic: Add support to run firmware POST

This patch adds support to run Power On Self Test (POST) for 83xx adapters.
POST can be run in 3 different speed modes :
i)  Fast mode (takes about 690 ms)
ii) Medium mode (takes about 2930 ms)
iii) Slow mode (takes about 7500 ms)

To run POST, firmware file with name "83xx_post_fw.bin" should be present under
/lib/firmware directory. load_fw_file module parameter is used to specify
POST operation and its speed mode.
load_fw_file = 2 : Fast mode
load_fw_file = 3 : Medium mode
load_fw_file = 4 : Slow mode

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Use usleep_range() instead of msleep() for sleep less than 20ms
Jitendra Kalsaria [Wed, 27 Aug 2014 16:43:19 +0000 (12:43 -0400)]
qlcnic: Use usleep_range() instead of msleep() for sleep less than 20ms

As per recommendation, msleep() may sleep longer than intended time for
values less than 20ms. So, use usleep_range() instead of msleep()

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Add support for 0x8830 device ID
Shahed Shaikh [Wed, 27 Aug 2014 16:43:18 +0000 (12:43 -0400)]
qlcnic: Add support for 0x8830 device ID

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Update Link speed and port type info for 83xx adapter
Jitendra Kalsaria [Wed, 27 Aug 2014 16:43:17 +0000 (12:43 -0400)]
qlcnic: Update Link speed and port type info for 83xx adapter

o Update the port type information
o Advertise correct link modes and autonegotiation
o Add support to change link speed

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: add skb_get_tx_queue() helper
Daniel Borkmann [Wed, 27 Aug 2014 09:11:27 +0000 (11:11 +0200)]
net: add skb_get_tx_queue() helper

Replace occurences of skb_get_queue_mapping() and follow-up
netdev_get_tx_queue() with an actual helper function.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8169: add missing MODULE_FIRMWARE.
Francois Romieu [Tue, 26 Aug 2014 20:40:38 +0000 (22:40 +0200)]
r8169: add missing MODULE_FIRMWARE.

Leftover from 6e1d0b8988188956dac091441c1492a79a342666 ("r8169:add
support for RTL8168H and RTL8107E").

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Chun-Hao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>