GitHub/LineageOS/G12/android_kernel_amlogic_linux-4.9.git
11 years agonet/mlx4_en: Don't reassign port mac address on firmware that supports it
Matan Barak [Wed, 30 Jan 2013 23:07:10 +0000 (23:07 +0000)]
net/mlx4_en: Don't reassign port mac address on firmware that supports it

Mac reassignments should only be done when not supported by the firmware. To
accomplish that, checking firmware capability bit to know whether we should
reassign macs in the driver.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_core: Use firmware driven flow steering hash mode
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:09 +0000 (23:07 +0000)]
net/mlx4_core: Use firmware driven flow steering hash mode

The Firmware dynamically changes flow steering hash configuration from covering
L2 only to "full" L2/L3/L4 mode needed.  The dynamic change allows the driver
to set hard coded hash configuration which is changed by the firmware from L2
to L2/L3/L4 when attaching the first L3/L4 flow steering rule and back to L2
when there are no more such rules.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_en: Fix ethtool rules leftovers after module unloaded
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:08 +0000 (23:07 +0000)]
net/mlx4_en: Fix ethtool rules leftovers after module unloaded

As part of the driver unload flow, all steering rules must be deleted,
make sure to remove the rules that were set through ethtool.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_en: Block insertion of ethtool steering rules while the interface is down
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:07 +0000 (23:07 +0000)]
net/mlx4_en: Block insertion of ethtool steering rules while the interface is down

Attaching steering rules while the interface is down is an invalid operation, block it.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_en: Fix vlan mask for ethtool steering rules
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:06 +0000 (23:07 +0000)]
net/mlx4_en: Fix vlan mask for ethtool steering rules

The vlan mask field should be validated and assigned according to the field
size which is 12 bits. Also replace the numeric 0xfff mask with existing kernel
macro.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_en: Validate VLAN IDs provided in ethtool flow steering rules
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:05 +0000 (23:07 +0000)]
net/mlx4_en: Validate VLAN IDs provided in ethtool flow steering rules

When attaching flow steering rules via Ethtool accept only valid vlans IDs e.g
in the range: [0,4095].

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_en: Fix ip/udp steering rules multicast mac when attached via ethtool
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:04 +0000 (23:07 +0000)]
net/mlx4_en: Fix ip/udp steering rules multicast mac when attached via ethtool

Destination mac is a mandatory specification for ip/udp steering rules.
When attaching multicast steering rules via ethtool the unicast mac of the
interface was added to the rule specification instead of the multicast mac.
The following commit sets the corresponding multicast mac for the rule multicast ip.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_core: Set correctly allow_loopback flag
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:03 +0000 (23:07 +0000)]
net/mlx4_core: Set correctly allow_loopback flag

The allow_loopback flag was wrongly set using arithmetic bit operation, change
the code to use logical bit operation.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_core: Directly expose fields of HW flow steering rule control segment
Hadar Hen Zion [Wed, 30 Jan 2013 23:07:02 +0000 (23:07 +0000)]
net/mlx4_core: Directly expose fields of HW flow steering rule control segment

Some of the fields for struct mlx4_net_trans_rule_hw_ctrl were packed into u32
and accessed through bit field operations. Expose and access them directly as
u8.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/vxlan: Add ethtool drvinfo
Yan Burman [Tue, 29 Jan 2013 23:43:07 +0000 (23:43 +0000)]
net/vxlan: Add ethtool drvinfo

Implement ethtool get_drvinfo.

Signed-off-by: Yan Burman <yanb@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6 anycast: Convert ipv6_sk_ac_lock to spinlock.
YOSHIFUJI Hideaki / 吉藤英明 [Wed, 30 Jan 2013 09:27:58 +0000 (09:27 +0000)]
ipv6 anycast: Convert ipv6_sk_ac_lock to spinlock.

Since all users are write-lock, it does not make sense to use
rwlock here.  Use simple spinlock.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6 flowlabel: Convert np->ipv6_fl_list to RCU.
YOSHIFUJI Hideaki / 吉藤英明 [Wed, 30 Jan 2013 09:27:52 +0000 (09:27 +0000)]
ipv6 flowlabel: Convert np->ipv6_fl_list to RCU.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6 flowlabel: Convert hash list to RCU.
YOSHIFUJI Hideaki / 吉藤英明 [Wed, 30 Jan 2013 09:27:47 +0000 (09:27 +0000)]
ipv6 flowlabel: Convert hash list to RCU.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6 flowlabel: Ensure to take lock when modifying np->ip6_sk_fl_list.
YOSHIFUJI Hideaki / 吉藤英明 [Wed, 30 Jan 2013 09:26:42 +0000 (09:26 +0000)]
ipv6 flowlabel: Ensure to take lock when modifying np->ip6_sk_fl_list.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agox86: bpf_jit_comp: add pkt_type support
Eric Dumazet [Thu, 31 Jan 2013 01:51:44 +0000 (17:51 -0800)]
x86: bpf_jit_comp: add pkt_type support

Supporting access to skb->pkt_type is a bit tricky if we want
to have a generic code, allowing pkt_type to be moved in struct sk_buff

pkt_type is a bit field, so compiler cannot really help us to find
its offset. Let's use a helper for this : It will throw a one time
message if pkt_type no longer starts at a byte boundary or is
no longer a 3bit field.

Reported-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Bump up the version to 5.1.33
Jitendra Kalsaria [Wed, 30 Jan 2013 12:47:19 +0000 (12:47 +0000)]
qlcnic: Bump up the version to 5.1.33

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: make pci_error_handlers const
Stephen Hemminger [Wed, 30 Jan 2013 12:47:18 +0000 (12:47 +0000)]
qlcnic: make pci_error_handlers const

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Fix RX/TX checksum setting for some adapter types
Manish chopra [Wed, 30 Jan 2013 12:47:17 +0000 (12:47 +0000)]
qlcnic: Fix RX/TX checksum setting for some adapter types

Signed-off-by: Manish chopra <manish.chopra@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Fix minidump in NPAR mode
Shahed Shaikh [Wed, 30 Jan 2013 12:47:16 +0000 (12:47 +0000)]
qlcnic: Fix minidump in NPAR mode

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: driver LRO bug fix
Manish chopra [Wed, 30 Jan 2013 12:47:15 +0000 (12:47 +0000)]
qlcnic: driver LRO bug fix

o ipv4 address was not getting programmed properly because of
  improper byte order conversion

Signed-off-by: Manish chopra <manish.chopra@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Free irq for mailbox interrupts
Manish chopra [Wed, 30 Jan 2013 12:47:14 +0000 (12:47 +0000)]
qlcnic: Free irq for mailbox interrupts

Signed-off-by: Manish chopra <manish.chopra@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Fix bug in reading HW reset template
Manish chopra [Wed, 30 Jan 2013 12:47:13 +0000 (12:47 +0000)]
qlcnic: Fix bug in reading HW reset template

Signed-off-by: Manish chopra <manish.chopra@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Fix sparse check endian warnings
Shahed Shaikh [Wed, 30 Jan 2013 12:47:12 +0000 (12:47 +0000)]
qlcnic: Fix sparse check endian warnings

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobond: have random dev address by default instead of zeroes
Jiri Pirko [Wed, 30 Jan 2013 10:08:11 +0000 (11:08 +0100)]
bond: have random dev address by default instead of zeroes

Makes more sense to have randomly generated address by default than to
have all zeroes. It also allows user to for example put the bond into
bridge without need to have any slaves in it.

Also note that this changes only behaviour of bonds with no slaves. Once
the first slave device is enslaved, its address will be used (no change
here).

Also, fix dev_assign_type values on the way.

Reported-by: Pavel Šimerda <psimerda@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: disallow drivers with buggy VLAN accel to register_netdevice()
Michał Mirosław [Tue, 29 Jan 2013 15:14:16 +0000 (15:14 +0000)]
net: disallow drivers with buggy VLAN accel to register_netdevice()

Instead of jumping aroung bugs that are easily fixed just don't let them in:
affected drivers should be either fixed or have NETIF_F_HW_VLAN_FILTER
removed from advertised features.

Quick grep in drivers/net shows two drivers that have NETIF_F_HW_VLAN_FILTER
but not ndo_vlan_rx_add/kill_vid(), but those are false-positives (features
are commented out).

OTOH two drivers have ndo_vlan_rx_add/kill_vid() implemented but don't
advertise NETIF_F_HW_VLAN_FILTER. Those are:

+ethernet/cisco/enic/enic_main.c
+ethernet/qlogic/qlcnic/qlcnic_main.c

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetfilter ipset: Use ipv6_addr_equal() where appropriate.
YOSHIFUJI Hideaki / 吉藤英明 [Tue, 29 Jan 2013 12:49:03 +0000 (12:49 +0000)]
netfilter ipset: Use ipv6_addr_equal() where appropriate.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetfilter ip6table_mangle: Use ipv6_addr_equal() where appropriate.
YOSHIFUJI Hideaki / 吉藤英明 [Tue, 29 Jan 2013 12:48:58 +0000 (12:48 +0000)]
netfilter ip6table_mangle: Use ipv6_addr_equal() where appropriate.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoxfrm: Convert xfrm_addr_cmp() to boolean xfrm_addr_equal().
YOSHIFUJI Hideaki / 吉藤英明 [Tue, 29 Jan 2013 12:48:50 +0000 (12:48 +0000)]
xfrm: Convert xfrm_addr_cmp() to boolean xfrm_addr_equal().

All users of xfrm_addr_cmp() use its result as boolean.
Introduce xfrm_addr_equal() (which is equal to !xfrm_addr_cmp())
and convert all users.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoxfrm: Use ipv6_addr_equal() where appropriate.
YOSHIFUJI Hideaki / 吉藤英明 [Tue, 29 Jan 2013 12:48:31 +0000 (12:48 +0000)]
xfrm: Use ipv6_addr_equal() where appropriate.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6 mcast: Use ipv6_addr_equal() in ip6_mc_source().
YOSHIFUJI Hideaki / 吉藤英明 [Tue, 29 Jan 2013 12:48:23 +0000 (12:48 +0000)]
ipv6 mcast: Use ipv6_addr_equal() in ip6_mc_source().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge
David S. Miller [Tue, 29 Jan 2013 20:59:45 +0000 (15:59 -0500)]
Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge

Included changes:
- fix recently introduced output behaviour

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Tue, 29 Jan 2013 20:32:13 +0000 (15:32 -0500)]
Merge git://git./linux/kernel/git/davem/net

Bring in the 'net' tree so that we can get some ipv4/ipv6 bug
fixes that some net-next work will build upon.

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: add anti-spoofing checks for 6to4 and 6rd
Hannes Frederic Sowa [Tue, 29 Jan 2013 08:24:25 +0000 (08:24 +0000)]
ipv6: add anti-spoofing checks for 6to4 and 6rd

This patch adds anti-spoofing checks in sit.c as specified in RFC3964
section 5.2 for 6to4 and RFC5969 section 12 for 6rd. I left out the
checks which could easily be implemented with netfilter.

Specifically this patch adds following logic (based loosely on the
pseudocode in RFC3964 section 5.2):

if prefix (inner_src_v6) == rd6_prefix (2002::/16 is the default)
        and outer_src_v4 != embedded_ipv4 (inner_src_v6)
                drop
if prefix (inner_dst_v6) == rd6_prefix (or 2002::/16 is the default)
        and outer_dst_v4 != embedded_ipv4 (inner_dst_v6)
                drop
accept

To accomplish the specified security checks proposed by above RFCs,
it is still necessary to employ uRPF filters with netfilter. These new
checks only kick in if the employed addresses are within the 2002::/16 or
another range specified by the 6rd-prefix (which defaults to 2002::/16).

Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agogianfar: Pack struct gfar_priv_grp into three cachelines
Claudiu Manoil [Tue, 29 Jan 2013 03:55:12 +0000 (03:55 +0000)]
gianfar: Pack struct gfar_priv_grp into three cachelines

* remove unused members(!): imask, ievent
* move space consuming interrupt name strings (int_name_* members) to
external structures, unessential for the driver's hot path
* keep high priority hot path data within the first 2 cache lines

This reduces struct gfar_priv_grp from 6 to 3 cache lines.
(Also fixed checkpatch warnings for the old code, in the process.)

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agogianfar: Cleanup gfar_parse_group() code
Claudiu Manoil [Tue, 29 Jan 2013 03:55:11 +0000 (03:55 +0000)]
gianfar: Cleanup gfar_parse_group() code

Factor out redundant code (improve readability, source code size).

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agogianfar: Optimize struct gfar_priv_tx_q for two cache lines
Claudiu Manoil [Tue, 29 Jan 2013 03:55:10 +0000 (03:55 +0000)]
gianfar: Optimize struct gfar_priv_tx_q for two cache lines

Resize and regroup structure members to eliminate memory holes and
to pack the structure into 2 cache lines (from 3).
tx_ring_size was resized from 4 to 2 bytes and few members were re-grouped
in order to eliminate byte holes and achieve compactness.
Where possible, few members were grouped according to their usage and access
order (i.e. start_xmit vs. clean_tx_ring members), less important members
were pushed at the end.

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Fix inet6_csk_bind_conflict so it builds with user namespaces enabled
Eric W. Biederman [Tue, 29 Jan 2013 02:16:18 +0000 (02:16 +0000)]
ipv6: Fix inet6_csk_bind_conflict so it builds with user namespaces enabled

When attempting to build linux-next with user namespaces enabled I ran
into this fun build error.

  CC      net/ipv6/inet6_connection_sock.o
.../net/ipv6/inet6_connection_sock.c: In function ‘inet6_csk_bind_conflict’:
.../net/ipv6/inet6_connection_sock.c:37:12: error: incompatible types when initializing type ‘int’ using
 type ‘kuid_t’
.../net/ipv6/inet6_connection_sock.c:54:30: error: incompatible type for argument 1 of ‘uid_eq’
.../include/linux/uidgid.h:48:20: note: expected ‘kuid_t’ but argument is of type ‘int’
make[3]: *** [net/ipv6/inet6_connection_sock.o] Error 1
make[2]: *** [net/ipv6] Error 2
make[2]: *** Waiting for unfinished jobs....

Using kuid_t instead of int to hold the uid fixes this.

Cc: Tom Herbert <therbert@google.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agopktgen: support net namespace
Cong Wang [Mon, 28 Jan 2013 19:55:53 +0000 (19:55 +0000)]
pktgen: support net namespace

v3: make pktgen_threads list per-namespace
v2: remove a useless check

This patch add net namespace to pktgen, so that
we can use pktgen in different namespaces.

Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: fec: add napi support to improve proformance
Frank Li [Mon, 28 Jan 2013 18:31:42 +0000 (18:31 +0000)]
net: fec: add napi support to improve proformance

Add napi support

Before this patch

 iperf -s -i 1
 ------------------------------------------------------------
 Server listening on TCP port 5001
 TCP window size: 85.3 KByte (default)
 ------------------------------------------------------------
 [  4] local 10.192.242.153 port 5001 connected with 10.192.242.138 port 50004
 [ ID] Interval       Transfer     Bandwidth
 [  4]  0.0- 1.0 sec  41.2 MBytes   345 Mbits/sec
 [  4]  1.0- 2.0 sec  43.7 MBytes   367 Mbits/sec
 [  4]  2.0- 3.0 sec  42.8 MBytes   359 Mbits/sec
 [  4]  3.0- 4.0 sec  43.7 MBytes   367 Mbits/sec
 [  4]  4.0- 5.0 sec  42.7 MBytes   359 Mbits/sec
 [  4]  5.0- 6.0 sec  43.8 MBytes   367 Mbits/sec
 [  4]  6.0- 7.0 sec  43.0 MBytes   361 Mbits/sec

After this patch
 [  4]  2.0- 3.0 sec  51.6 MBytes   433 Mbits/sec
 [  4]  3.0- 4.0 sec  51.8 MBytes   435 Mbits/sec
 [  4]  4.0- 5.0 sec  52.2 MBytes   438 Mbits/sec
 [  4]  5.0- 6.0 sec  52.1 MBytes   437 Mbits/sec
 [  4]  6.0- 7.0 sec  52.1 MBytes   437 Mbits/sec
 [  4]  7.0- 8.0 sec  52.3 MBytes   439 Mbits/sec

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoethoc: Cleanup driver format
Barry Grussling [Sun, 27 Jan 2013 18:44:36 +0000 (18:44 +0000)]
ethoc: Cleanup driver format

Cleanup the format of ethoc.c to meet network driver style as
per checkpatch.pl.

Signed-off-by: Barry Grussling <barry@grussling.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoip_gre: When TOS is inherited, use configured TOS value for non-IP packets
David Ward [Sun, 27 Jan 2013 13:04:58 +0000 (13:04 +0000)]
ip_gre: When TOS is inherited, use configured TOS value for non-IP packets

A GRE tunnel can be configured so that outgoing tunnel packets inherit
the value of the TOS field from the inner IP header. In doing so, when
a non-IP packet is transmitted through the tunnel, the TOS field will
always be set to 0.

Instead, the user should be able to configure a different TOS value as
the fallback to use for non-IP packets. This is helpful when the non-IP
packets are all control packets and should be handled by routers outside
the tunnel as having Internet Control precedence. One example of this is
the NHRP packets that control a DMVPN-compatible mGRE tunnel; they are
encapsulated directly by GRE and do not contain an inner IP header.

Under the existing behavior, the IFLA_GRE_TOS parameter must be set to
'1' for the TOS value to be inherited. Now, only the least significant
bit of this parameter must be set to '1', and when a non-IP packet is
sent through the tunnel, the upper 6 bits of this same parameter will be
copied into the TOS field. (The ECN bits get masked off as before.)

This behavior is backwards-compatible with existing configurations and
iproute2 versions.

Signed-off-by: David Ward <david.ward@ll.mit.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv4: introduce address lifetime
Jiri Pirko [Thu, 24 Jan 2013 09:41:41 +0000 (09:41 +0000)]
ipv4: introduce address lifetime

There are some usecase when lifetime of ipv4 addresses might be helpful.
For example:
1) initramfs networkmanager uses a DHCP daemon to learn network
configuration parameters
2) initramfs networkmanager addresses, routes and DNS configuration
3) initramfs networkmanager is requested to stop
4) initramfs networkmanager stops all daemons including dhclient
5) there are addresses and routes configured but no daemon running. If
the system doesn't start networkmanager for some reason, addresses and
routes will be used forever, which violates RFC 2131.

This patch is essentially a backport of ivp6 address lifetime mechanism
for ipv4 addresses.

Current "ip" tool supports this without any patch (since it does not
distinguish between ipv4 and ipv6 addresses in this perspective.

Also, this should be back-compatible with all current netlink users.

Reported-by: Pavel Šimerda <psimerda@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'ipfrags'
David S. Miller [Tue, 29 Jan 2013 18:37:29 +0000 (13:37 -0500)]
Merge branch 'ipfrags'

Jesper Dangaard Brouer says:

====================
This patchset is V2, with some trivial code fixes, which were noticed
by DaveM. It is still a partly respin of my fragmentation optimization
patches: http://thread.gmane.org/gmane.linux.network/250914

This is not the complete patchset, from the gmane link above. In this
patchset, I primarily focus on adjusting cacheline for better SMP/NUMA
performance.

Once this patchset have been agreed upon, I will continue and respin
the rest of my patches.

This time around, I have created a frag DoS generator, via the tool
trafgen (http://netsniff-ng.org/).  To create a stable DoS scenario
(no longer relying on frame dropping due to disabled flow-control).

Two 10G interfaces are under-test, and uses Ethernet flow-control.  A
third interface is used for generating the DoS attack (this interface
is also 10G, but it does not need to be, as 500Kpps DoS is enough).

Test types summary (netperf):
 Test-20G64K     == 2x10G with 65K fragments
 Test-20G3F      == 2x10G with 3x fragments (3*1472 bytes)
 Test-20G64K+DoS == Same as 20G64K with frag DoS
 Test-20G3F+DoS  == Same as 20G3F  with frag DoS

Patch list:
 Patch-01 - net: cacheline adjust struct netns_frags for better frag performance
 Patch-02 - net: cacheline adjust struct inet_frags for better frag performance
 Patch-03 - net: cacheline adjust struct inet_frag_queue
 Patch-04 - net: frag helper functions for mem limit tracking
 Patch-05 - net: use lib/percpu_counter API for fragmentation mem accounting
 Patch-06 - net: frag, move LRU list maintenance outside of rwlock

Performance table summary:

 Test-type:  Test-20G64K    Test-20G3F  20G64K+DoS   20G3F+DoS
 ----------  -----------    ----------  ----------   ---------
  net-next:  15114.5 Mbit/s   8954.21     2444.28     3918.01 Mbit/s
  Patch-01:  16075.8 Mbit/s   8976.18     2621.49     4072.79 Mbit/s
  Patch-02:  17806.9 Mbit/s   9280.32     2478.62     4274.59 Mbit/s
  Patch-03:  17317.4 Mbit/s   9308.62     2546.05     4336.59 Mbit/s
  Patch-04:  17635.9 Mbit/s   9256.16     2535.25     4327.63 Mbit/s
  Patch-05:  18027.0 Mbit/s   9918.99     2492.62     3621.68 Mbit/s
  Patch-06:  18486.7 Mbit/s  10723.20     3657.85     4560.64 Mbit/s

 I cannot explain the under-DoS regression that patch-05/percpu_counter
 introduces.  But patch-06/LRU-lock corrects the situation again.

Below is a testlab setup description, with links to the trafgen DoS
packet config used.

Testlab
=======

Server setup
------------
The machine acting as a server:
 - 2x CPU (E5-2630)
 - Thus a NUMA arch/machine
 - 4x 10Gbit/s ports
 - NICs 2x Intel Dual port 82599 based (driver ixgbe)

Setup:
 - Interfaces uses Ethernet flow control
 - Flush all iptables
 - Remove all iptables related module.
 - Kill irqbalance
 - Pin each 10G NIC port to a *single* CPU each

Pinning can easily be done by command hacks::

 for x in /proc/irq/*/eth8*/../smp_affinity_list ; do echo 1 > $x; done
 for x in /proc/irq/*/eth9*/../smp_affinity_list ; do echo 3 > $x; done
 for x in /proc/irq/*/eth31*/../smp_affinity_list; do echo 6 > $x; done
 for x in /proc/irq/*/eth32*/../smp_affinity_list; do echo 8 > $x; done

Notice NUMA setting: The CPU to NIC tying is carefully choosen
according to the NUMA node setup.  Thus, NICs connected to a PCI-e
slot that is connected to a physical CPU socket are tied together.

Choosing only a single CPU per NIC (port) is just to ease provoking
and debugging this performance issue. (In real setups, you can choose
more CPU, just remember the NUMA node in the equation).

Tools
-----

Netperf is used, with option -T to ensure CPU binding.
The netserver processes, are NAPI pinned::

 numactl -m0 -c0 netserver
 numactl -m1 -c 1 netserver -p 1337

I now have a frag DoS generator, created via the tool:
  trafgen (see: http://netsniff-ng.org/)

Trafgen packet config file:
 http://people.netfilter.org/hawk/frag_work/trafgen/frag_packet03_small_frag.txf

Notice, I'm using features of trafgen, recently developed by Daniel
Borkmann, thus you need the latest git tree to use my trafgen packet
config.

 git://github.com/borkmann/netsniff-ng.git

Command line:
 trafgen --dev eth51 --conf frag_packet03_small_frag.txf -V -k 100 --cpus 2

Tests types
-----------

Test(20G64K) UDP-64K 2x 10Gbit/s with no DoS traffic:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 export SIZE=$((65507)); export TIME=$((20)); export LOG=/tmp/netperf.log ;\
 netperf -p 1337 -H 192.168.31.2 -T7,7 -t UDP_STREAM -l $TIME -- -m $SIZE >> ${LOG}.31 &\
 netperf         -H 192.168.81.2 -T2,2 -t UDP_STREAM -l $TIME -- -m $SIZE >> ${LOG}.81 && \
 wait $! && tail -n3 ${LOG}.* && \
 tail -n3 ${LOG}.{31,81} | awk 'BEGIN{sum=0;} /212992        / {sum+=$4; print " +"$4} /==/ {print " file:"$2} END{print "sum:"sum" Mbit/s"}'

Test(20G3F) UDP-3xfrags 2x 10Gbit/s with no DoS traffic:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 export SIZE=$((3*1472)); export TIME=$((20)); export LOG=/tmp/netperf.log ;\
 netperf -p 1337 -H 192.168.31.2 -T7,7 -t UDP_STREAM -l $TIME -- -m $SIZE >> ${LOG}.31 &\
 netperf         -H 192.168.81.2 -T2,2 -t UDP_STREAM -l $TIME -- -m $SIZE >> ${LOG}.81 && \
 wait $! && tail -n3 ${LOG}.* && \
tail -n3 ${LOG}.{31,81} | awk 'BEGIN{sum=0;} /212992        / {sum+=$4; print " +"$4} /==/ {print " file:"$2} END{print "sum:"sum" Mbit/s"}'

Awk script for summming results:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

tail -n3 ${LOG}.{31,81} | awk 'BEGIN{sum=0;} /212992        / {sum+=$4; print " +"$4} /==/ {print " file:"$2} END{print "sum:"sum" Mbit/s"}'
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: frag, move LRU list maintenance outside of rwlock
Jesper Dangaard Brouer [Mon, 28 Jan 2013 23:45:51 +0000 (23:45 +0000)]
net: frag, move LRU list maintenance outside of rwlock

Updating the fragmentation queues LRU (Least-Recently-Used) list,
required taking the hash writer lock.  However, the LRU list isn't
tied to the hash at all, so we can use a separate lock for it.

Original-idea-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: use lib/percpu_counter API for fragmentation mem accounting
Jesper Dangaard Brouer [Mon, 28 Jan 2013 23:45:33 +0000 (23:45 +0000)]
net: use lib/percpu_counter API for fragmentation mem accounting

Replace the per network namespace shared atomic "mem" accounting
variable, in the fragmentation code, with a lib/percpu_counter.

Getting percpu_counter to scale to the fragmentation code usage
requires some tweaks.

At first view, percpu_counter looks superfast, but it does not
scale on multi-CPU/NUMA machines, because the default batch size
is too small, for frag code usage.  Thus, I have adjusted the
batch size by using __percpu_counter_add() directly, instead of
percpu_counter_sub() and percpu_counter_add().

The batch size is increased to 130.000, based on the largest 64K
fragment memory usage.  This does introduce some imprecise
memory accounting, but its does not need to be strict for this
use-case.

It is also essential, that the percpu_counter, does not
share cacheline with other writers, to make this scale.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: frag helper functions for mem limit tracking
Jesper Dangaard Brouer [Mon, 28 Jan 2013 23:45:12 +0000 (23:45 +0000)]
net: frag helper functions for mem limit tracking

This change is primarily a preparation to ease the extension of memory
limit tracking.

The change does reduce the number atomic operation, during freeing of
a frag queue.  This does introduce a some performance improvement, as
these atomic operations are at the core of the performance problems
seen on NUMA systems.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: cacheline adjust struct inet_frag_queue
Jesper Dangaard Brouer [Mon, 28 Jan 2013 23:44:49 +0000 (23:44 +0000)]
net: cacheline adjust struct inet_frag_queue

Fragmentation code cacheline adjusting of struct inet_frag_queue.

Take advantage of the size of struct timer_list, and move all but
spinlock_t lock, below the timer struct.  On 64-bit 'lru_list',
'list' and 'refcnt', fits exactly into the next cacheline, and a
new cacheline starts at 'fragments'.

The netns_frags *net pointer is moved to the end of the struct,
because its used in a compare, with "next/close-by" elements of
which this struct is embedded into.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: cacheline adjust struct inet_frags for better frag performance
Jesper Dangaard Brouer [Mon, 28 Jan 2013 23:44:37 +0000 (23:44 +0000)]
net: cacheline adjust struct inet_frags for better frag performance

The globally shared rwlock, of struct inet_frags, shares
cacheline with the 'rnd' number, which is used by the hash
calculations.  Fix this, as this obviously is a bad idea, as
unnecessary cache-misses will occur when accessing the 'rnd'
number.

Also small note that, moving function ptr (*match) up in struct,
is to avoid it lands on the next cacheline (on 64-bit).

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: cacheline adjust struct netns_frags for better frag performance
Jesper Dangaard Brouer [Mon, 28 Jan 2013 23:44:14 +0000 (23:44 +0000)]
net: cacheline adjust struct netns_frags for better frag performance

This small cacheline adjustment of struct netns_frags improves
performance significantly for the fragmentation code.

Struct members 'lru_list' and 'mem' are both hot elements, and it
hurts performance, due to cacheline bouncing at every call point,
when they share a cacheline.  Also notice, how mem is placed
together with 'high_thresh' and 'low_thresh', as they are used in
the compare operations together.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: ks8851: convert to threaded IRQ
Felipe Balbi [Tue, 29 Jan 2013 07:16:30 +0000 (09:16 +0200)]
net: ks8851: convert to threaded IRQ

just as it should have been. It also helps
removing the, now unnecessary, workqueue.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet neigh: Optimize neighbor entry size calculation.
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 24 Jan 2013 00:44:23 +0000 (00:44 +0000)]
net neigh: Optimize neighbor entry size calculation.

When allocating memory for neighbour cache entry, if
tbl->entry_size is not set, we always calculate
sizeof(struct neighbour) + tbl->key_len, which is common
in the same table.

With this change, set tbl->entry_size during the table
initialization phase, if it was not set, and use it in
neigh_alloc() and neighbour_priv().

This change also allow us to have both of protocol private
data and device priate data at tha same time.

Note that the only user of prototcol private is DECnet
and the only user of device private is ATM CLIP.
Since those are exclusive, we have not been facing issues
here.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: avoid to hang up on sending due to sysctl configuration overflow.
bingtian.ly@taobao.com [Wed, 23 Jan 2013 20:35:28 +0000 (20:35 +0000)]
net: avoid to hang up on sending due to sysctl configuration overflow.

    I found if we write a larger than 4GB value to some sysctl
variables, the sending syscall will hang up forever, because these
variables are 32 bits, such large values make them overflow to 0 or
negative.

    This patch try to fix overflow or prevent from zero value setup
of below sysctl variables:

net.core.wmem_default
net.core.rmem_default

net.core.rmem_max
net.core.wmem_max

net.ipv4.udp_rmem_min
net.ipv4.udp_wmem_min

net.ipv4.tcp_wmem
net.ipv4.tcp_rmem

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Li Yu <raise.sail@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Tue, 29 Jan 2013 00:23:07 +0000 (16:23 -0800)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

Pull powerpc fixes from Benjamin Herrenschmidt:
 "Whenever you have a chance between two dives, you might want to
  consider pulling my merge branch to pickup a few fixes for 3.8 that
  have been accumulating for the last couple of weeks (I was myself
  travelling then on vacation).

  Nothing major, just a handful of powerpc bug fixes that I consider
  worth getting in before 3.8 goes final."

And I'll have everybody know that I'm not diving for several days yet.
Snif.

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Max next_tb to prevent from replaying timer interrupt
  powerpc: kernel/kgdb.c: Fix memory leakage
  powerpc/book3e: Disable interrupt after preempt_schedule_irq
  powerpc/oprofile: Fix error in oprofile power7_marked_instr_event() function
  powerpc/pasemi: Fix crash on reboot
  powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning for ppc32

11 years agovia-rhine: add 64bit statistics.
Jamie Gloudon [Wed, 23 Jan 2013 18:05:04 +0000 (18:05 +0000)]
via-rhine: add 64bit statistics.

Switch to use ndo_get_stats64 to get 64bit statistics.

Signed-off-by: Jamie Gloudon <jamie.gloudon@gmail.com>
Tested-by: Jamie Gloudon <jamie.gloudon@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agodrivers/net/phy/micrel_phy: Add support for new PHYs
David J. Choi [Wed, 23 Jan 2013 14:05:15 +0000 (14:05 +0000)]
drivers/net/phy/micrel_phy: Add support for new PHYs

Summary of changes:
.Newly added phys
-KSZ8081/KSZ8091, which has some phy ids.
-KSZ8061
-KSZ9031, which is Gigabit phy.
-KSZ886X, which has a switch function.
-KSZ8031, which has a same phy ids with KSZ8021.

Signed-off-by: David J. Choi <david.choi@micrel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: phy: realtek: add rtl8211e driver
Giuseppe CAVALLARO [Wed, 23 Jan 2013 00:30:03 +0000 (00:30 +0000)]
net: phy: realtek: add rtl8211e driver

This patch adds the minimal driver to manage the
Realtek RTL8211E 10/100/1000 Transceivers.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetpoll: use the net namespace of current process instead of init_net
Cong Wang [Sun, 27 Jan 2013 15:55:21 +0000 (15:55 +0000)]
netpoll: use the net namespace of current process instead of init_net

This will allow us to setup netconsole in a different namespace
rather than where init_net is.

Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetpoll: use ipv6_addr_equal() to compare ipv6 addr
Cong Wang [Sun, 27 Jan 2013 15:55:20 +0000 (15:55 +0000)]
netpoll: use ipv6_addr_equal() to compare ipv6 addr

ipv6_addr_equal() is faster.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetpoll: add RCU annotation to npinfo field
Cong Wang [Tue, 22 Jan 2013 21:29:39 +0000 (21:29 +0000)]
netpoll: add RCU annotation to npinfo field

dev->npinfo is protected by RCU.

This fixes the following sparse warnings:

net/core/netpoll.c:177:48: error: incompatible types in comparison expression (different address spaces)
net/core/netpoll.c:200:35: error: incompatible types in comparison expression (different address spaces)
net/core/netpoll.c:221:35: error: incompatible types in comparison expression (different address spaces)
net/core/netpoll.c:327:18: error: incompatible types in comparison expression (different address spaces)

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Mon, 28 Jan 2013 23:21:38 +0000 (18:21 -0500)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless-next

John W. Linville says:

====================
Included is an NFC pull.  Samuel says:

"It brings the following goodies:

- LLCP socket timestamping (To be used e.g with the recently released nfctool
  application for a more efficient skb timestamping when sniffing).
- A pretty big pn533 rework from Waldemar, preparing the driver to support
  more flavours of pn533 based devices.
- HCI changes from Eric in preparation for the microread driver support.
- Some LLCP memory leak fixes, cleanups and slight improvements.
- pn544 and nfcwilink move to the devm_kzalloc API.
- An initial Secure Element (SE) API.
- An nfc.h license change from the original author, allowing non GPL
  application code to safely include it."

Also included are a pair of mac80211 pulls.  Johannes says:

"We found two bugs in the previous code, so I'm sending you a pull
request again this soon.

This contains two regulatory bug fixes, some of Thomas's hwsim beacon
timer work and a documentation fix from Bob."

"Another pull request for mac80211-next. This time, I have a number of
things, the patches are mostly self-explanatory. There are a few fixes
from Felix and myself, and random cleanups & improvements. The biggest
thing is the partial patchset from Marco preparing for mesh powersave."

Additionally, there are a pair of iwlwifi pulls.  Johannes says:

"For iwlwifi-next, I have a few cleanups/improvements as well as a few
not very important fixes and more preparations for new devices."

"Please pull a few updates for iwlwifi. These are just some cleanups and
a debug improvement."

On top of that, there is a slew of driver updates.  This includes
brcmfmac, mwifiex, ath9k, carl9170, and mwl8k as well as a handful
of others.  The bcma and ssb busses get some attention as well.
Still, I don't see any big headliners here.

Also included is a pull of the wireless tree, in order to resolve
some merge conflicts.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Mon, 28 Jan 2013 23:18:17 +0000 (18:18 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
This series contains updates to e1000e, ixgbevf, igb and igbvf.
Majority of the patches are code cleanups of e1000e where code
is removed (Yeah!).  The other two e1000e patches are fixes.  The
first is to fix the maximum frame size for 82579 devices.  The second
fix is to resolve an issue with devices other than 82579 that suffer
from dropped transactions on platforms with deep C-states when
jumbo frames are enabled.

The ixgbevf patch is to ensure that the driver fetches the correct,
refreshed value for link status and speed when the values have changed.

The igb and igbvf patches are a solution to an issue Stefan Assmann
reported, where when the PF is up and igbvf is loaded, the MAC address
is not generated using eth_hw_addr_random().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agopowerpc: Max next_tb to prevent from replaying timer interrupt
Tiejun Chen [Tue, 15 Jan 2013 17:01:19 +0000 (17:01 +0000)]
powerpc: Max next_tb to prevent from replaying timer interrupt

With lazy interrupt, we always call __check_irq_replaysome with
decrementers_next_tb to check if we need to replay timer interrupt.
So in hotplug case we also need to set decrementers_next_tb as MAX
to make sure __check_irq_replay don't replay timer interrupt
when return as we expect, otherwise we'll trap here infinitely.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc: kernel/kgdb.c: Fix memory leakage
Cong Ding [Mon, 14 Jan 2013 07:26:32 +0000 (07:26 +0000)]
powerpc: kernel/kgdb.c: Fix memory leakage

the variable backup_current_thread_info isn't freed before existing the
function.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/book3e: Disable interrupt after preempt_schedule_irq
Tiejun Chen [Sun, 6 Jan 2013 00:49:34 +0000 (00:49 +0000)]
powerpc/book3e: Disable interrupt after preempt_schedule_irq

In preempt case current arch_local_irq_restore() from
preempt_schedule_irq() may enable hard interrupt but we really
should disable interrupts when we return from the interrupt,
and so that we don't get interrupted after loading SRR0/1.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/oprofile: Fix error in oprofile power7_marked_instr_event() function
Carl E. Love [Thu, 29 Nov 2012 06:42:03 +0000 (06:42 +0000)]
powerpc/oprofile: Fix error in oprofile power7_marked_instr_event() function

The calculation for the left shift of the mask OPROFILE_PM_PMCSEL_MSK has an
error.  The calculation is should be to shift left by (max_cntrs - cntr) times
the width of the pmsel field width.  However, the #define OPROFILE_MAX_PMC_NUM
was used instead of OPROFILE_PMSEL_FIELD_WIDTH.  This patch fixes the
calculation.

Signed-off-by: Carl Love <cel@us.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agopowerpc/pasemi: Fix crash on reboot
Steven Rostedt [Mon, 21 Jan 2013 17:23:26 +0000 (17:23 +0000)]
powerpc/pasemi: Fix crash on reboot

commit f96972f2dc "kernel/sys.c: call disable_nonboot_cpus() in
kernel_restart()"

added a call to disable_nonboot_cpus() on kernel_restart(), which tries
to shutdown all the CPUs except the first one. The issue with the PA
Semi, is that it does not support CPU hotplug.

When the call is made to __cpu_down(), it calls the notifiers
CPU_DOWN_PREPARE, and then tries to take the CPU down.

One of the notifiers to the CPU hotplug code, is the cpufreq. The
DOWN_PREPARE will call __cpufreq_remove_dev() which calls
cpufreq_driver->exit. The PA Semi exit handler unmaps regions of I/O
that is used by an interrupt that goes off constantly
(system_reset_common, but it goes off during normal system operations
too). I'm not sure exactly what this interrupt does.

Running a simple function trace, you can see it goes off quite a bit:

# tracer: function
#
#           TASK-PID    CPU#    TIMESTAMP  FUNCTION
#              | |       |          |         |
          <idle>-0     [001]  1558.859363: .pasemi_system_reset_exception <-.system_reset_exception
          <idle>-0     [000]  1558.860112: .pasemi_system_reset_exception <-.system_reset_exception
          <idle>-0     [000]  1558.861109: .pasemi_system_reset_exception <-.system_reset_exception
          <idle>-0     [001]  1558.861361: .pasemi_system_reset_exception <-.system_reset_exception
          <idle>-0     [000]  1558.861437: .pasemi_system_reset_exception <-.system_reset_exception

When the region is unmapped, the system crashes with:

Disabling non-boot CPUs ...
Error taking CPU1 down: -38
Unable to handle kernel paging request for data at address 0xd0000800903a0100
Faulting instruction address: 0xc000000000055fcc
Oops: Kernel access of bad area, sig: 11 [#1]
PREEMPT SMP NR_CPUS=64 NUMA PA Semi PWRficient
Modules linked in: shpchp
NIP: c000000000055fcc LR: c000000000055fb4 CTR: c0000000000df1fc
REGS: c0000000012175d0 TRAP: 0300   Not tainted  (3.8.0-rc4-test-dirty)
MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI>  CR: 24000088  XER: 00000000
SOFTE: 0
DAR: d0000800903a0100, DSISR: 42000000
TASK = c0000000010e9008[0] 'swapper/0' THREAD: c000000001214000 CPU: 0
GPR00: d0000800903a0000 c000000001217850 c0000000012167e0 0000000000000000
GPR04: 0000000000000000 0000000000000724 0000000000000724 0000000000000000
GPR08: 0000000000000000 0000000000000000 0000000000000001 0000000000a70000
GPR12: 0000000024000080 c00000000fff0000 ffffffffffffffff 000000003ffffae0
GPR16: ffffffffffffffff 0000000000a21198 0000000000000060 0000000000000000
GPR20: 00000000008fdd35 0000000000a21258 000000003ffffaf0 0000000000000417
GPR24: 0000000000a226d0 c000000000000000 0000000000000000 0000000000000000
GPR28: c00000000138b358 0000000000000000 c000000001144818 d0000800903a0100
NIP [c000000000055fcc] .set_astate+0x5c/0xa4
LR [c000000000055fb4] .set_astate+0x44/0xa4
Call Trace:
[c000000001217850] [c000000000055fb4] .set_astate+0x44/0xa4 (unreliable)
[c0000000012178f0] [c00000000005647c] .restore_astate+0x2c/0x34
[c000000001217980] [c000000000054668] .pasemi_system_reset_exception+0x6c/0x88
[c000000001217a00] [c000000000019ef0] .system_reset_exception+0x48/0x84
[c000000001217a80] [c000000000001e40] system_reset_common+0x140/0x180

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agocan: rework skb reserved data handling
Oliver Hartkopp [Mon, 28 Jan 2013 08:33:33 +0000 (08:33 +0000)]
can: rework skb reserved data handling

Added accessor and skb_reserve helpers for struct can_skb_priv.
Removed pointless skb_headroom() check.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
CC: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'md-3.8-fixes' of git://neil.brown.name/md
Linus Torvalds [Mon, 28 Jan 2013 23:15:34 +0000 (15:15 -0800)]
Merge tag 'md-3.8-fixes' of git://neil.brown.name/md

Pull dmraid fix from NeilBrown:
 "Just one fix for md in 3.8

  dmraid assess redundancy and replacements slightly inaccurately which
  could lead to some degraded arrays failing to assemble."

* tag 'md-3.8-fixes' of git://neil.brown.name/md:
  DM-RAID: Fix RAID10's check for sufficient redundancy

11 years agopowerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning for ppc32
Li Zhong [Sun, 2 Dec 2012 20:19:22 +0000 (20:19 +0000)]
powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning for ppc32

This patch fixes MAX_STACK_TRACE_ENTRIES too low warning for ppc32,
which is similar to commit 12660b17.

Reported-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Tested-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes
Linus Torvalds [Mon, 28 Jan 2013 19:53:49 +0000 (11:53 -0800)]
Merge git://git./linux/kernel/git/steve/gfs2-3.0-fixes

Pull GFS2 fix from Steven Whitehouse.

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes:
  GFS2: fix skip unlock condition

11 years agoMerge tag 'iommu-fixes-v3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 28 Jan 2013 19:52:56 +0000 (11:52 -0800)]
Merge tag 'iommu-fixes-v3.8-rc5' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU fix from Joerg Roedel:
 "One fix for the AMD IOMMU driver to work around broken BIOSes found in
  the field.  Some BIOSes forget to enable a workaround for a hardware
  problem which might cause the IOMMU to stop working under high load
  conditions.  The fix makes sure this workaround is enabled."

* tag 'iommu-fixes-v3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  IOMMU, AMD Family15h Model10-1Fh erratum 746 Workaround

11 years agoMerge tag 'mfd-for-linus-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 28 Jan 2013 19:51:57 +0000 (11:51 -0800)]
Merge tag 'mfd-for-linus-3.8-1' of git://git./linux/kernel/git/sameo/mfd-2.6

Pull MFD fixes from Samuel Ortiz:
 "This is the first pull request for MFD fixes for 3.8

  We have some build failure fixes (twl4030, vexpress, abx500 and
  tps65910), some actual runtime oops and lockup fixes (rtsx, da9052),
  and some more hypothetical NULL pointers dereferences fixes for
  pcf50633 and max776xx.

  Then we also have additional rtsx fixes for a correct switch output
  voltage and clock divider correctness for rtl8411 (rtsx driver), and
  irqdomain fix for db8550-prcmu, and some more cosmetic fixes for
  arizona and wm5102."

* tag 'mfd-for-linus-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: rtsx: Fix oops when rtsx_pci_sdmmc is not probed
  mfd: wm5102: Fix definition of WM5102_MAX_REGISTER
  mfd: twl4030: Don't warn about uninitialized return code
  mfd: da9052/53 lockup fix
  mfd: rtsx: Add clock divider hook
  mmc: rtsx: Call MFD hook to switch output voltage
  mfd: rtsx: Add output voltage switch hook
  mfd: Fix compile errors and warnings when !CONFIG_AB8500_BM
  mfd: vexpress: Export global functions to fix build error
  mfd: arizona: Check errors from regcache_sync()
  mfd: tc3589x: Use simple irqdomain
  mfd: pcf50633: Init pcf->dev before using it
  mfd: max77693: Init max77693->dev before using it
  mfd: max77686: Init max77686->dev before using it
  mfd: db8500-prcmu: Fix irqdomain usage
  mfd: tps65910: Select REGMAP_IRQ in Kconfig to fix build error
  mfd: arizona: Disable control interface reporting for WM5102 and WM5110

11 years agobatman-adv: fix local translation table output
Antonio Quartulli [Thu, 24 Jan 2013 10:41:39 +0000 (11:41 +0100)]
batman-adv: fix local translation table output

The last-seen field has to be printed for all the local
entries but the one marked with the no-purge flag

Introduced by 15727323d9f8864b2d41930940acc38de987045a
("batman-adv: don't print the last_seen time for bat0 TT local entry")

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Mon, 28 Jan 2013 19:43:00 +0000 (14:43 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-next into for-davem

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 28 Jan 2013 19:41:37 +0000 (11:41 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking updates from David Miller:
 "Much more accumulated than I would have liked due to an unexpected
  bout with a nasty flu:

   1) AH and ESP input don't set ECN field correctly because the
      transport head of the SKB isn't set correctly, fix from Li
      RongQing.

   2) If netfilter conntrack zones are disabled, we can return an
      uninitialized variable instead of the proper error code.  Fix from
      Borislav Petkov.

   3) Fix double SKB free in ath9k driver beacon handling, from Felix
      Feitkau.

   4) Remove bogus assumption about netns cleanup ordering in
      nf_conntrack, from Pablo Neira Ayuso.

   5) Remove a bogus BUG_ON in the new TCP fastopen code, from Eric
      Dumazet.  It uses spin_is_locked() in it's test and is therefore
      unsuitable for UP.

   6) Fix SELINUX labelling regressions added by the tuntap multiqueue
      changes, from Paul Moore.

   7) Fix CRC errors with jumbo frame receive in tg3 driver, from Nithin
      Nayak Sujir.

   8) CXGB4 driver sets interrupt coalescing parameters only on first
      queue, rather than all of them.  Fix from Thadeu Lima de Souza
      Cascardo.

   9) Fix regression in the dispatch of read/write registers in dm9601
      driver, from Tushar Behera.

  10) ipv6_append_data miscalculates header length, from Romain KUNTZ.

  11) Fix PMTU handling regressions on ipv4 routes, from Steffen
      Klassert, Timo Teräs, and Julian Anastasov.

  12) In 3c574_cs driver, add necessary parenthesis to "x << y & z"
      expression.  From Nickolai Zeldovich.

  13) macvlan_get_size() causes underallocation netlink message space,
      fix from Eric Dumazet.

  14) Avoid division by zero in xfrm_replay_advance_bmp(), from Nickolai
      Zeldovich.  Amusingly the zero check was already there, we were
      just performing it after the modulus :-)

  15) Some more splice bug fixes from Eric Dumazet, which fix things
      mostly eminating from how we now more aggressively use high-order
      pages in SKBs.

  16) Fix size calculation bug when freeing hash tables in the IPSEC
      xfrm code, from Michal Kubecek.

  17) Fix PMTU event propagation into socket cached routes, from Steffen
      Klassert.

  18) Fix off by one in TX buffer release in netxen driver, from Eric
      Dumazet.

  19) Fix rediculous memory allocation requirements introduced by the
      tuntap multiqueue changes, from Jason Wang.

  20) Remove bogus AMD platform workaround in r8169 driver that causes
      major problems in normal operation, from Timo Teräs.

  21) virtio-net set affinity and select queue don't handle
      discontiguous cpu numbers properly, fix from Wanlong Gao.

  22) Fix a route refcounting issue in loopback driver, from Eric
      Dumazet.  There's a similar fix coming that we might add to the
      macvlan driver as well.

  23) Fix SKB leaks in batman-adv's distributed arp table code, from
      Matthias Schiffer.

  24) r8169 driver gives descriptor ownership back the hardware before
      we're done reading the VLAN tag out of it, fix from Francois
      Romieu.

  25) Checksums not calculated properly in GRE tunnel driver fix from
      Pravin B Shelar.

26) Fix SCTP memory leak on namespace exit."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (101 commits)
  dm9601: support dm9620 variant
  SCTP: Free the per-net sysctl table on net exit. v2
  net: phy: icplus: fix broken INTR pin settings
  net: phy: icplus: Use the RGMII interface mode to configure clock delays
  IP_GRE: Fix kernel panic in IP_GRE with GRE csum.
  sctp: set association state to established in dupcook_a handler
  ip6mr: limit IPv6 MRT_TABLE identifiers
  r8169: fix vlan tag read ordering.
  net: cdc_ncm: use IAD provided by the USB core
  batman-adv: filter ARP packets with invalid MAC addresses in DAT
  batman-adv: check for more types of invalid IP addresses in DAT
  batman-adv: fix skb leak in batadv_dat_snoop_incoming_arp_reply()
  net: loopback: fix a dst refcounting issue
  virtio-net: reset virtqueue affinity when doing cpu hotplug
  virtio-net: split out clean affinity function
  virtio-net: fix the set affinity bug when CPU IDs are not consecutive
  can: pch_can: fix invalid error codes
  can: ti_hecc: fix invalid error codes
  can: c_can: fix invalid error codes
  r8169: remove the obsolete and incorrect AMD workaround
  ...

11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville [Mon, 28 Jan 2013 18:54:03 +0000 (13:54 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless

Conflicts:
drivers/net/wireless/ath/ath9k/main.c
drivers/net/wireless/iwlwifi/dvm/tx.c

11 years agoIOMMU, AMD Family15h Model10-1Fh erratum 746 Workaround
Suravee Suthikulpanit [Thu, 24 Jan 2013 19:17:53 +0000 (13:17 -0600)]
IOMMU, AMD Family15h Model10-1Fh erratum 746 Workaround

The IOMMU may stop processing page translations due to a perceived lack
of credits for writing upstream peripheral page service request (PPR)
or event logs. If the L2B miscellaneous clock gating feature is enabled
the IOMMU does not properly register credits after the log request has
completed, leading to a potential system hang.

BIOSes are supposed to disable L2B micellaneous clock gating by setting
L2_L2B_CK_GATE_CONTROL[CKGateL2BMiscDisable](D0F2xF4_x90[2]) = 1b. This
patch corrects that for those which do not enable this workaround.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <joro@8bytes.org>
11 years agoigbvf: be sane about random MAC addresses
Mitch A Williams [Fri, 18 Jan 2013 08:57:20 +0000 (08:57 +0000)]
igbvf: be sane about random MAC addresses

Tighten up some of the code surrounding MAC addresses. Since the PF is
now giving all zeros instead of a random address, check for this case
and generate a random address. This ensures that we always know when we
have a random address and udev won't get upset about it.

Additionally, tighten up some of the log messages and clean up the
formatting.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Tested-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Don't give VFs random MAC addresses
Mitch A Williams [Fri, 18 Jan 2013 08:57:20 +0000 (08:57 +0000)]
igb: Don't give VFs random MAC addresses

If the user has not assigned a MAC address to a VM, then don't give it a
random one. Instead, just give it zeros and let it figure out what to do
with them.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Tested-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoGFS2: fix skip unlock condition
David Teigland [Thu, 3 Jan 2013 22:52:07 +0000 (17:52 -0500)]
GFS2: fix skip unlock condition

The recent commit fb6791d100d1bba20b5cdbc4912e1f7086ec60f8
included the wrong logic.  The lvbptr check was incorrectly
added after the patch was tested.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
11 years agoixgbevf: Make sure link status and speed are fetched
Greg Rose [Thu, 24 Jan 2013 04:54:48 +0000 (04:54 +0000)]
ixgbevf: Make sure link status and speed are fetched

A recent change makes it necessary to set get_link_status to ensure that
the driver fetches the correct, refreshed value for link status and speed
when it has changed in the physical function device.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: remove comments which are no longer applicable
Bruce Allan [Sat, 12 Jan 2013 07:26:53 +0000 (07:26 +0000)]
e1000e: cleanup: remove comments which are no longer applicable

Code was removed but the applicable comments were not.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup hw.h
Bruce Allan [Sat, 12 Jan 2013 07:26:22 +0000 (07:26 +0000)]
e1000e: cleanup hw.h

Remove unnecessary #include, forward prototype of struct e1000_adapter and
an empty comment; fix a comment which mentions "static data for the MAC"
which is not applicable to the following struct; and cleanup some
whitespace issues.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: remove unused #define
Bruce Allan [Sat, 12 Jan 2013 07:25:52 +0000 (07:25 +0000)]
e1000e: cleanup: remove unused #define

All references to E1000_ERT_2048 have been removed.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: adjust PM QoS request
Bruce Allan [Sat, 12 Jan 2013 07:25:22 +0000 (07:25 +0000)]
e1000e: adjust PM QoS request

It has been found that devices other than 82579 (a.k.a. e1000_pch2lan)
suffer from dropped transactions on platforms with deep C-states when
jumbo frames are enabled.  For example, LOMs on ICH9- and ICH10-based
platforms which recently had early-receive de-featured (for stability
reasons) suffer from this.  To resolve this for all devices, when jumbo
frames are enabled set the PM QoS DMA latency request based on the size
of the receive packet buffer less one full frame.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: correct maximum frame size on 82579
Bruce Allan [Wed, 9 Jan 2013 01:20:46 +0000 (01:20 +0000)]
e1000e: correct maximum frame size on 82579

The largest jumbo frame supported by the 82579 hardware is 9018.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: remove e1000e_commit_phy()
Bruce Allan [Wed, 23 Jan 2013 06:50:05 +0000 (06:50 +0000)]
e1000e: cleanup: remove e1000e_commit_phy()

Remove the function e1000e_commit_phy() and replace the few calls to it
with the same function pointer that it would call.  The function pointer is
almost always set for the devices that access these code paths so there is
no risk of a NULL pointer dereference; for the few instances where the
function pointer might not be set (i.e. can be called for the few devices
which do not have this function pointer set), check for a valid function
pointer.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: remove e1000_get_cable_length()
Bruce Allan [Sat, 5 Jan 2013 08:06:24 +0000 (08:06 +0000)]
e1000e: cleanup: remove e1000_get_cable_length()

Remove the function e1000_get_cable_length() and replace the two calls
to it with the same function pointer that it would call.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: remove e1000_get_phy_cfg_done()
Bruce Allan [Sat, 5 Jan 2013 08:06:19 +0000 (08:06 +0000)]
e1000e: cleanup: remove e1000_get_phy_cfg_done()

Remove the function e1000_get_phy_cfg_done() and replace the single call
to it with the same function pointer that it would call.  The function
pointer is always set so there is no risk of a NULL pointer dereference.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: rename e1000_get_cfg_done()
Bruce Allan [Sat, 5 Jan 2013 08:06:14 +0000 (08:06 +0000)]
e1000e: cleanup: rename e1000_get_cfg_done()

In keeping with the e1000e driver function naming convention, the subject
function is renamed to indicate it is generic, i.e. it is applicable to
more than just a single MAC family (e.g. 80003es2lan, 82571, ich8lan).

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: remove e1000_force_speed_duplex()
Bruce Allan [Sat, 5 Jan 2013 08:06:08 +0000 (08:06 +0000)]
e1000e: cleanup: remove e1000_force_speed_duplex()

Remove the function e1000_force_speed_duplex() and replace the single call
to it with the same function pointer that it would call.  The function
pointer is always set so there is no risk of a NULL pointer dereference.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: cleanup: remove e1000_set_d0_lplu_state()
Bruce Allan [Sat, 5 Jan 2013 08:06:03 +0000 (08:06 +0000)]
e1000e: cleanup: remove e1000_set_d0_lplu_state()

Replace the function e1000_set_d0_lplu_state() with the contents of it
coded in place of the single call to the function.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agonet: fix possible wrong checksum generation
Eric Dumazet [Fri, 25 Jan 2013 20:34:37 +0000 (20:34 +0000)]
net: fix possible wrong checksum generation

Pravin Shelar mentioned that GSO could potentially generate
wrong TX checksum if skb has fragments that are overwritten
by the user between the checksum computation and transmit.

He suggested to linearize skbs but this extra copy can be
avoided for normal tcp skbs cooked by tcp_sendmsg().

This patch introduces a new SKB_GSO_SHARED_FRAG flag, set
in skb_shinfo(skb)->gso_type if at least one frag can be
modified by the user.

Typical sources of such possible overwrites are {vm}splice(),
sendfile(), and macvtap/tun/virtio_net drivers.

Tested:

$ netperf -H 7.7.8.84
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
7.7.8.84 () port 0 AF_INET
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    10.00    3959.52

$ netperf -H 7.7.8.84 -t TCP_SENDFILE
TCP SENDFILE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 7.7.8.84 ()
port 0 AF_INET
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    10.00    3216.80

Performance of the SENDFILE is impacted by the extra allocation and
copy, and because we use order-0 pages, while the TCP_STREAM uses
bigger pages.

Reported-by: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next
David S. Miller [Mon, 28 Jan 2013 05:19:34 +0000 (00:19 -0500)]
Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next

Marc Kleine-Budde says:

====================
this is a pull-request for net-next/master. There is are 9 patches by
Fabio Baltieri and Kurt Van Dijck which add LED infrastructure and
support for CAN devices. Bernd Krumboeck adds a driver for the USB CAN
adapter from 8 devices. Oliver Hartkopp improves the CAN gateway
functionality. There are 4 patches by me, which clean up the CAN's
Kconfig.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agodm9601: support dm9620 variant
Peter Korsgaard [Sun, 27 Jan 2013 12:34:22 +0000 (12:34 +0000)]
dm9601: support dm9620 variant

dm9620 is a newer variant of dm9601 with more features (usb 2.0, checksum
offload, ..), but it can also be put in a dm9601 compatible mode, allowing
us to reuse the existing driver.

This does mean that the extended features like checksum offload cannot be
used, but that's hardly critical on a 100mbps interface.

Thanks to Sławek Wernikowski <slawek@wernikowski.net> for providing me
with a dm9620 based device to test.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: add RCU annotation to sk_dst_cache field
Cong Wang [Tue, 22 Jan 2013 21:09:51 +0000 (21:09 +0000)]
net: add RCU annotation to sk_dst_cache field

sock->sk_dst_cache is protected by RCU.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agodecnet: use correct RCU API to deref sk_dst_cache field
Cong Wang [Tue, 22 Jan 2013 21:09:50 +0000 (21:09 +0000)]
decnet: use correct RCU API to deref sk_dst_cache field

sock->sk_dst_cache is protected by RCU, therefore we should
use __sk_dst_get() to deref it once we lock the sock.

This fixes several sparse warnings.

Cc: linux-decnet-user@lists.sourceforge.net
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_en: Initialize RFS filters lock and list in init_netdev
Amir Vadai [Thu, 24 Jan 2013 01:54:19 +0000 (01:54 +0000)]
net/mlx4_en: Initialize RFS filters lock and list in init_netdev

filters_lock might have been used while it was re-initialized.
Moved filters_lock and filters_list initialization to init_netdev instead of
alloc_resources which is called every time the device is configured.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_en: Fix a race when closing TX queue
Amir Vadai [Thu, 24 Jan 2013 01:54:18 +0000 (01:54 +0000)]
net/mlx4_en: Fix a race when closing TX queue

There is a possible race where the TX completion handler can clean the
entire TX queue between the decision that the queue is full and actually
closing it. To avoid this situation, check again if the queue is really
full, if not, reopen the transmit and continue with sending the packet.

CC: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/mlx4_core: Return proper error code when __mlx4_add_one fails
Jack Morgenstein [Thu, 24 Jan 2013 01:54:17 +0000 (01:54 +0000)]
net/mlx4_core: Return proper error code when __mlx4_add_one fails

Returning 0 (success) when in fact we are aborting the load, leads to kernel
panic when unloading the module. Fix that by returning the actual error code.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>