postpone the checksum calculation, then if the output NIC supports checksum
offloading, we can utlize it. And though the output NIC doesn't support
checksum offloading, but we'll mangle this packet, this can free us from
updating the checksum, as the checksum calculation occurs later.
Signed-off-by: NChangli Gao <xiaosuo@gmail.com>
Signed-off-by: NPatrick McHardy <kaber@trash.net>

As the fragments are sent in order in most of OSes, such as Windows, Darwin and
FreeBSD, it is likely the new fragments are at the end of the inet_frag_queue.
In the fast path, we check if the skb at the end of the inet_frag_queue is the
prev we expect.
Signed-off-by: NChangli Gao <xiaosuo@gmail.com>
Signed-off-by: NPatrick McHardy <kaber@trash.net>

Following commit 1437ce39 "ethtool:
Change ethtool_op_set_flags to validate flags", ethtool_op_set_flags
takes a third parameter and cannot be used directly as an
implementation of ethtool_ops::set_flags.

Changes nes and ipoib driver to pass in the appropriate value.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Acked-by: NRoland Dreier <rolandd@cisco.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

These config register values will be useful when the memory registers
are returning 0xffffffff which has been reported.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add skb->rxhash support for TCP packets only because the bnx2 RSS hash
does not hash UDP ports.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Minor change to use MSI-X even if there is only one CPU.  This allows
the CNIC driver to always have a dedicated MSI-X vector to handle
iSCSI events, instead of sharing the MSI vector.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Reduces text ~300 bytes of text (woohoo!) in an x86 defconfig

$ size vmlinux*
   text	   data	    bss	    dec	    hex	filename
7198526	 720112	1366288	9284926	 8dad3e	vmlinux
7198862	 720112	1366288	9285262	 8dae8e	vmlinux.netdev
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Reduces an x86 defconfig text and data ~2k.
text is smaller, data is larger.

$ size vmlinux*
   text	   data	    bss	    dec	    hex	filename
7198862	 720112	1366288	9285262	 8dae8e	vmlinux
7205273	 716016	1366288	9287577	 8db799	vmlinux.device_h

Uses %pV and struct va_format
Format arguments are verified before printk
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Reduces an x86 defconfig text and data ~55k, .6% smaller.

$ size vmlinux*
   text	   data	    bss	    dec	    hex	filename
7205273	 716016	1366288	9287577	 8db799	vmlinux
7258890	 719768	1366288	9344946	 8e97b2	vmlinux.master

Uses %pV and struct va_format
Format arguments are verified before printk

The dev_info macro is converted to _dev_info because there are
existing uses of variables named dev_info in the kernel tree
like drivers/net/pcmcia/pcnet_cs.c

A dev_info macro is created to call _dev_info
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add the ability to print a format and va_list from a structure pointer

Allows __dev_printk to be implemented as a single printk while
minimizing string space duplication.

%pV should not be used without some mechanism to verify the
format and argument use ala __attribute__(format (printf(...))).
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Support more fine grained control of bridge netfilter iptables invocation
by adding seperate brnf_call_*tables parameters for each device using the
sysfs interface. Packets are passed to layer 3 netfilter when either the
global parameter or the per bridge parameter is enabled.
Acked-by: NStephen Hemminger <shemminger@vyatta.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NPatrick McHardy <kaber@trash.net>

Both ETH_FLAG_LRO and NETIF_F_LRO have the same value, but NETIF_F_LRO
is intended to use with netdev->features.
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Acked-by: NDon Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add explanatory comment to avoid confusion when a pointer is set
to the second word of an array instead of the customary cast of a
pointer to the beginning of the array.
Signed-off-by: NGreg Rose <gregory.v.rose@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The igb online link test was always reporting pass because instead of
checking for if_running it was checking for netif_carrier_ok.

This change corrects the test so that it is run if the interface is running
instead of checking for netif carrier ok.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: NEmil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Check the value of max_vfs at the time of assignment of vfs_allocated_count.

The previous check in igb_probe_vfs was too late as by that time the rx/tx
rings were initialized with the wrong offset.
Signed-off-by: NEmil Tantilov <emil.s.tantilov@intel.com>
Tested-by: NJeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The 82576 expects the second rx queue in any pool to receive L2 switch
loop back packets sent from the second tx queue in another pool.  The
82576 VF driver does not enable the second rx queue so if the PF driver
sends packets destined to a VF from its second tx queue then the VF
driver will never see them.  In SR-IOV mode limit the number of tx queues
used by the PF driver to one. This patch fixes a bug reported in which
the PF cannot communciate with the VF and should be considered for 2.6.34
stable.

CC: stable@kernel.org
Signed-off-by: NGreg Rose <gregory.v.rose@intel.com>
Tested-by: NJeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

82580 NICs can have up to 4 functions. This fixes phy accesses
to use the correct locks for functions 2 and 3.
Signed-off-by: NNicholas Nunley <nicholasx.d.nunley@intel.com>
Tested-by: NJeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes the CONFIG_MCORE2 check from around NET_IP_ALIGN.  It is
based on a suggestion from Andi Kleen.  The assumption is that there are
not any x86 cores where unaligned access is really slow, and this change
would allow for a performance improvement to still exist on configurations
that are not necessarily optimized for Core 2.

Cc: Andi Kleen <ak@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: NH. Peter Anvin <hpa@zytor.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add error checking to DMA descriptor rings initialization code.
Signed-off-by: NDenis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

be2net driver is currently not showing correct phy details in certain cases.
This patch fixes it.
Signed-off-by: NAjit Khaparde <ajitk@serverengines.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since ehea_get_stats calls ehea_h_query_ehea_port, which
can sleep, we can also sleep when allocating a page in
this function. This fixes some memory allocation failure
warnings seen under low memory conditions.
Signed-off-by: NBrian King <brking@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Conflicts:
	drivers/net/wireless/libertas/host.h

x86 architectures can handle unaligned accesses in hardware, and it has
been shown that unaligned DMA accesses can be expensive on Nehalem
architectures.  As such we should overwrite NET_IP_ALIGN to resolve
this issue.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: NH. Peter Anvin <hpa@zytor.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for 1G SFP+ PHY's to 82599.
Signed-off-by: NDon Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Allow ethtool to query the number of RX rings, the fields used in RX
flow hashing and the hash indirection table.

Allow ethtool to update the RX flow hash indirection table.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Many NICs use an indirection table to map an RX flow hash value to one
of an arbitrary number of queues (not necessarily a power of 2).  It
can be useful to remove some queues from this indirection table so
that they are only used for flows that are specifically filtered
there.  It may also be useful to weight the mapping to account for
user processes with the same CPU-affinity as the RX interrupts.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Only some netdev feature flags correspond directly to ethtool feature
flags.  ethtool_op_get_flags() does the right thing.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: NBhavesh Davda <bhavesh@vmware.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The documented error code for attempts to set unsupported flags (or
to clear flags that cannot be disabled) is EINVAL, not EOPNOTSUPP.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Acked-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ethtool_op_set_flags() does not check for unsupported flags, and has
no way of doing so.  This means it is not suitable for use as a
default implementation of ethtool_ops::set_flags.

Add a 'supported' parameter specifying the flags that the driver and
hardware support, validate the requested flags against this, and
change all current callers to pass this parameter.

Change some other trivial implementations of ethtool_ops::set_flags to
call ethtool_op_set_flags().
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Reviewed-by: NStanislaw Gruszka <sgruszka@redhat.com>
Acked-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use correct shift factor for extracting the SGE DMA Ingress Padding
Boundary.  Was accidentally using the register field's shift which was
close enough (4 instead of the propper value of 5) that it actually
sort of worked for various packet sizes ...
Signed-off-by: NCasey Leedom <leedom@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove obsolete comment about the lack of a TX Timer Callback -- which
we now _do_ have ...
Signed-off-by: NCasey Leedom <leedom@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

add fast path for in-order fragments

As the fragments are sent in order in most of OSes, such as Windows, Darwin and
FreeBSD, it is likely the new fragments are at the end of the inet_frag_queue.
In the fast path, we check if the skb at the end of the inet_frag_queue is the
prev we expect.
Signed-off-by: NChangli Gao <xiaosuo@gmail.com>
----
 include/net/inet_frag.h |    1 +
 net/ipv4/ip_fragment.c  |   12 ++++++++++++
 net/ipv6/reassembly.c   |   11 +++++++++++
 3 files changed, 24 insertions(+)
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

/proc/net/snmp and /proc/net/netstat expose SNMP counters.

Width of these counters is either 32 or 64 bits, depending on the size
of "unsigned long" in kernel.

This means user program parsing these files must already be prepared to
deal with 64bit values, regardless of user program being 32 or 64 bit.

This patch introduces 64bit snmp values for IPSTAT mib, where some
counters can wrap pretty fast if they are 32bit wide.

# netstat -s|egrep "InOctets|OutOctets"
    InOctets: 244068329096
    OutOctets: 244069348848
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The ibm p7 architecure seems to reorder memory accesses more
aggressively than previous ppc64 architectures. This requires memory
barriers to ensure that rx/tx doorbells are pressed only after
memory to be DMAed is written.
Signed-off-by: NSathya Perla <sathyap@serverengines.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The original code is off by one because we should start counting at
zero.  So the size of the resource is end - start + 1.  I switched it to
use resource_size() to do the calculation.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

act_nat: use stack variable

structure tc_nat isn't too big for stack, so we can put it in stack.
Signed-off-by: NChangli Gao <xiaosuo@gmail.com>
----
 net/sched/act_nat.c |   31 ++++++++++---------------------
 1 file changed, 10 insertions(+), 21 deletions(-)
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

act_mirred: combine duplicate code

tcf_bstats is updated in any way, so we can do it earlier to reduce the size of
the code.
Signed-off-by: NChangli Gao <xiaosuo@gmail.com>
Signed-off-by: NJamal Hadi Salim <hadi@cyberus.ca>
----
 net/sched/act_mirred.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

'Shoul' must be 'should'.
Signed-off-by: NKulikov Vasiliy <segooon@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>