Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
dev_get_stats() handles all issues with net_device_ops
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
Use net_device_ops for usbnet device, and export for use
by other derived drivers.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Default handler for net_device_stats already does same thing.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Convert this driver to new net_device_ops infrastructure.
Also use default net_device get-stats infrastructure
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This converts the mpc device to using new netdevice_ops.
Compile tested only, needs more than usual review since
device was swaping pointers around etc.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Fri, 20 Mar 2009 13:30:37 +0000 (13:30 +0000)]
sfc: Implement adaptive IRQ moderation
Calculate a score for each 1000 IRQs:
- TX completions are worth 1 point
- RX completions are worth 4 if merged using LRO or 2 otherwise
Reduce moderation if the score is less than 10000, down to a minimum
of 5 us. Increase moderation if the score is more than 20000, up to
the specified maximum.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Fri, 20 Mar 2009 13:26:41 +0000 (13:26 +0000)]
sfc: Work around unreliable legacy interrupt status
In rare cases, reading the legacy interrupt status register can
acknowledge an event queue whose attention flag has not yet been set
in the register. Until we service this event queue it will not
generate any more interrupts. Therefore, as a secondary check, poll
the next slot in each active event queue whose flag is not set.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Fri, 20 Mar 2009 13:25:39 +0000 (13:25 +0000)]
sfc: Pad packets to 33 bytes to prevent TX packet parser lockup
The packet parser used in the TX data path for locating checksum
fields can lose synchronisation with the TX queue manager when
handling packets that look like IPv4 but are too short (17-32 bytes).
Work around this by padding to 33 bytes.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The initial version of the DSA driver only supported a single switch
chip per network interface, while DSA-capable switch chips can be
interconnected to form a tree of switch chips. This patch adds support
for multiple switch chips on a network interface.
An example topology for a 16-port device with an embedded CPU is as
follows:
This requires a couple of interdependent changes in the DSA layer:
- The dsa platform driver data needs to be extended: there is still
only one netdevice per DSA driver instance (eth0 in the example
above), but each of the switch chips in the tree needs its own
mii_bus device pointer, MII management bus address, and port name
array. (include/net/dsa.h) The existing in-tree dsa users need
some small changes to deal with this. (arch/arm)
- The DSA and Ethertype DSA tagging modules need to be extended to
use the DSA device ID field on receive and demultiplex the packet
accordingly, and fill in the DSA device ID field on transmit
according to which switch chip the packet is heading to.
(net/dsa/tag_{dsa,edsa}.c)
- The concept of "CPU port", which is the switch chip port that the
CPU is connected to (port 10 on switch chip 0 in the example), needs
to be extended with the concept of "upstream port", which is the
port on the switch chip that will bring us one hop closer to the CPU
(port 10 for both switch chips in the example above).
- The dsa platform data needs to specify which ports on which switch
chips are links to other switch chips, so that we can enable DSA
tagging mode on them. (For inter-switch links, we always use
non-EtherType DSA tagging, since it has lower overhead. The CPU
link uses dsa or edsa tagging depending on what the 'root' switch
chip supports.) This is done by specifying "dsa" for the given
port in the port array.
- The dsa platform data needs to be extended with information on via
which port to reach any given switch chip from any given switch chip.
This info is specified via the per-switch chip data struct ->rtable[]
array, which gives the nexthop ports for each of the other switches
in the tree.
For the example topology above, the dsa platform data would look
something like this:
Fix compiler warning about non-const format string.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Protocols should be able to use constant value for the descriptor.
Minor whitespace cleanup as well
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Fri, 20 Mar 2009 00:17:43 +0000 (00:17 +0000)]
igb: cleanup tx dma so map & unmap use matching calls
The igb driver was using map_single to map the skbs and then unmap_page to
unmap them. This update changes that so instead uses skb_dma_map and
skb_dma_unmap.
In addition the next_to_watch member of the buffer_info struct was being
set uneccesarily. I removed the spots where it was set without being needed.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Fri, 20 Mar 2009 00:17:25 +0000 (00:17 +0000)]
igb: rework igb_set_multi so that vfs are properly updated
Currently if there are no multicast addresses programmed into the PF then
the VFs cannot have their multicast filters reset. This change makes it so
the code path that updates vf multicast is always called along with the pf
updates.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Fri, 20 Mar 2009 00:17:08 +0000 (00:17 +0000)]
igb: update driver to use setup_timer function
igb was previously setting up all of the timer members itself. It is
easier to just call setup_timer and reduce the calls to one line.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Fri, 20 Mar 2009 00:16:50 +0000 (00:16 +0000)]
igb: remove IGB_DESC_UNUSED since it is better handled by a function call
This patch removes IGB_DESC_UNUSED and replaces it with a function call
instead in order to cleanup some of the ugliness introduced by the macro.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Arthur Jones [Sat, 21 Mar 2009 23:55:07 +0000 (16:55 -0700)]
igb: allow tx of pre-formatted vlan tagged packets
When the 82575 is fed 802.1q packets, it chokes with
an error of the form:
igb 0000:08:00.1 partial checksum but proto=81!
As the logic there was not smart enough to look into
the vlan header to pick out the encapsulated protocol.
There are times when we'd like to send these packets
out without having to configure a vlan on the interface.
Here we check for the vlan tag and allow the packet to
go out with the correct hardware checksum.
Thanks to Kand Ly <kand@riverbed.com> for discovering the
issue and the coming up with a solution. This patch is
based upon his work.
Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
powerpc 4xx EMAC driver: device name reported on timeout is not correct
Hi,
IBM EMAC driver performs device reset (drivers/net/ibm_newemac/core.c:
emac_probe() -> emac_init_phy() -> emac_reset()) before registering
appropriate net_device (emac_probe() -> register_netdev()), so
net_device name contains raw format string during EMAC reset ("eth%d").
If the case of reset timeout, emac_report_timeout_error() function is
called to report an error. The problem is this function uses net_device
name to report device related, which is not correct, as a result in the
kernel log buffer we see:
eth%d: reset timeout
The solution is to print device_node full_name instead. After applying
the patch proposed, error string is like the following:
Signed-off-by: Mikhail Zolotaryov <lebon@lebon.org.ua> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 21 Mar 2009 20:42:55 +0000 (13:42 -0700)]
net: remove useless prefetch() call
There is no gain using prefetch() in dev_hard_start_xmit(), since
we already had to read ops->ndo_select_queue pointer in dev_pick_tx(),
and both pointers are probably located in the same cache line.
This prefetch call slows down fast path because of a stall in address
computation.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Convert ixgbe to use net_device_ops properly.
Rather than changing the select_queue function pointer
just check the flag.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ilpo Järvinen [Sat, 21 Mar 2009 20:36:17 +0000 (13:36 -0700)]
net/*: use linux/kernel.h swap()
tcp_sack_swap seems unnecessary so I pushed swap to the caller.
Also removed comment that seemed then pointless, and added include
when not already there. Compile tested.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Bernard Pidoux [Sat, 21 Mar 2009 20:34:20 +0000 (13:34 -0700)]
netrom: zero length frame filtering in NetRom
A zero length frame filter was recently introduced in ROSE protocole.
Previous commit makes the same at AX25 protocole level.
This patch has the same purpose for NetRom protocole.
The reason is that empty frames have no meaning in NetRom protocole.
Signed-off-by: Bernard Pidoux <f6bvp@amsat.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Bernard Pidoux [Sat, 21 Mar 2009 20:33:55 +0000 (13:33 -0700)]
ax25: zero length frame filtering in AX25
In previous commit 244f46ae6e9e18f6fc0be7d1f49febde4762c34b
was introduced a zero length frame filter for ROSE protocole.
This patch has the same purpose at AX25 frame level for the same
reason. Empty frames have no meaning in AX25 protocole.
Signed-off-by: Bernard Pidoux <f6bvp@amsat.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Vorontsov [Sat, 21 Mar 2009 20:30:05 +0000 (13:30 -0700)]
fsl_pq_mdio: Revive Gianfar TBI PHY support
commit 1577ecef766650a57fceb171acee2b13cbfaf1d3 ("netdev: Merge UCC
and gianfar MDIO bus drivers") broke the TSEC TBI PHY support: the
driver now refuses to probe TBI MDIO buses as it doesn't know about
"fsl,gianfar-tbi" compatible entry, and thus _probe() fails with
-ENODEV status.
Fix this by adding "fsl,gianfar-tbi" to the list of known Gianfar
MDIO buses.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
CC drivers/net/gianfar.o
drivers/net/gianfar.c: In function 'gfar_suspend':
drivers/net/gianfar.c:552: error: 'struct gfar_private' has no member named 'dev'
drivers/net/gianfar.c: In function 'gfar_resume':
drivers/net/gianfar.c:601: error: 'struct gfar_private' has no member named 'dev'
make[2]: *** [drivers/net/gianfar.o] Error 1
Fix this by converting suspend and resume routines to use
gfar_private->ndev.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Bruce Allan [Sat, 21 Mar 2009 20:25:25 +0000 (13:25 -0700)]
e100: add support for 82552 10/100 adapter
This patch enables support for the new Intel 82552 adapter (new PHY paired
with the existing MAC in the ICH7 chipset). No new features are added to
the driver, however there are minor changes due to updated registers and a
few workarounds for hardware errata.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 20 Mar 2009 08:33:32 +0000 (01:33 -0700)]
net: reorder struct Qdisc for better SMP performance
dev_queue_xmit() needs to dirty fields "state", "q", "bstats" and "qstats"
On x86_64 arch, they currently span three cache lines, involving more
cache line ping pongs than necessary, making longer holding of queue spinlock.
We can reduce this to one cache line, by grouping all read-mostly fields
at the beginning of structure. (Or should I say, all highly modified fields
at the end :) )
Jesse Brandeburg [Thu, 19 Mar 2009 01:24:04 +0000 (01:24 +0000)]
ixgbe: Fixup the watchdog interrupt scheduling on 82599
The watchdog will schedule an interrupt to help make sure queues are
cleaned in the case when an interrupt is missed, most likely due to very
high load. On 82599, there are extra interrupt registers to account for
the larger number of MSI-X vectors (64 total for 82599 vs. 18 total for
82598). These must be taken into account when performing this operation in
the watchdog.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
PJ Waskiewicz [Thu, 19 Mar 2009 01:23:46 +0000 (01:23 +0000)]
ixgbe: Correctly report Wake On LAN for 82599 KX4 devices
ethtool isn't reporting the support level of WoL for 82599 KX4 devices.
While the device does support WoL, ethtool was never updated to properly
report the level of support, nor will it allow ethtool to modify the type
of packets to listen for.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
PJ Waskiewicz [Thu, 19 Mar 2009 01:23:29 +0000 (01:23 +0000)]
ixgbe: Fix PCI bus reporting on driver load for 82598 after 82599 merge
82598's PCI bus reporting on driver load was broken after 82599 merged.
This results in incorrect reporting, and an erroneous warning message
that the 82598 is in a PCIe slot that isn't fast enough to run 10GbE.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Thu, 19 Mar 2009 01:15:21 +0000 (01:15 +0000)]
ixgb: refactor tx path to use skb_dma_map/unmap
This code updates ixgb so that it can use the skb_dma_map/unmap functions
to map the buffers. In addition it also updates the tx hang logic to use
time_stamp instead of dma to determine if it has detected a tx hang.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Arthur Jones [Thu, 19 Mar 2009 01:13:08 +0000 (01:13 +0000)]
e1000e: allow tx of pre-formatted vlan tagged packets
As with igb, when the e1000e driver is fed 802.1q
packets with hardware checksum on, it chokes with an
error of the form:
checksum_partial proto=81!
As the logic there was not smart enough to look into
the vlan header to pick out the encapsulated protocol.
There are times when we'd like to send these packets
out without having to configure a vlan on the interface.
Here we check for the vlan tag and allow the packet to
go out wiht the correct hardware checksum.
Thanks to Kand Ly <kand@riverbed.com> for discovering the
issue and the coming up with a solution. This patch is
based upon his work.
Fixups from Stephen Hemminger <shemminger@vyatta.com> and
Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Thu, 19 Mar 2009 01:12:50 +0000 (01:12 +0000)]
e1000e: fix dma error handling issues
There were a few issues I noticed in e1000e. These include a double free
of the skb if mapping fails, and the fact that context descriptors appear
to be left in the descriptor ring after the failure.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Thu, 19 Mar 2009 01:12:27 +0000 (01:12 +0000)]
e1000e: add support for 82583 device id
Add device ID and related support for 82583 mac.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Radheka Godse <radheka.godse@intel.com> Acked-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch replaces the generic eth_mac_addr function with one that
also updates the hardware mac address registers. It also renames the
existing smsc911x_set_mac_address function to
smsc911x_hw_set_mac_address for clarity.
Newer LAN911x and all LAN921x devices also support changing the mac
address while the device is running, which is useful for some bonding
modes.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
smsc911x: define status word positions as constants
The vast majority of bit constants in this driver are defined in the
header file, but TX and RX status word bits are not. This patch (which
should make no functional change) defines these, to make the driver
slightly more readable.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
To improve manageability, it would be good to be able to disambiguate routes
added by administrator from those added by DHCP client. The only necessary
kernel change is to add value to rtnetlink include file so iproute2 utility
can use it.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tilman Schmidt [Thu, 19 Mar 2009 06:44:23 +0000 (23:44 -0700)]
bas_gigaset: correctly allocate USB interrupt transfer buffer
Every USB transfer buffer has to be allocated individually by kmalloc.
Impact: bugfix, no functional change
Signed-off-by: Tilman Schmidt <tilman@imap.cc> Tested-by: Kolja Waschk <kawk@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
smsc911x: reset last known duplex and carrier on open
smsc911x_phy_adjust_link is called periodically by the phy layer (as
it's run in polling mode), and it only updates the hardware when it sees
a change in duplex or carrier. This patch clears the last known values
every time the interface is brought up, instead of only when the module
is loaded.
Without this patch the adjust_link function never updates the hardware
after an ifconfig down; ifconfig up. On a full duplex link this causes
the tx error counter to increment, even though packets are correctly
transmitted, as the default MAC_CR register setting is for half duplex.
The tx errors are "no carrier" errors, which should be ignored in
full-duplex mode. When MAC_CR is set to "full duplex" mode they are
correctly ignored by the hardware.
Note that even with this patch the tx error counter can increment if
packets are transmitted between "ifconfig up" and the first phy poll
interval. An improved solution would use the phy interrupt with phylib,
but I haven't managed to make this work 100% robustly yet.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / linux-2.6-omap-h63xx.git / log