| Commit message (Collapse) | Author | Age | Files | Lines |
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PCI drivers that implement the io_error_detected callback should return
PCI_ERS_RESULT_DISCONNECT if the state passed in is
pci_channel_io_perm_failure. This patch fixes the issue for igb.
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>
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on permanent failure
PCI drivers that implement the io_error_detected callback
should return PCI_ERS_RESULT_DISCONNECT if the state
passed in is pci_channel_io_perm_failure. This state is not
checked in many of the network drivers.
This patch fixes the omission in the e1000e driver.
Signed-off-by: Mike Mason <mmlnx@us.ibm.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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PCI drivers that implement the io_error_detected callback
should return PCI_ERS_RESULT_DISCONNECT if the state
passed in is pci_channel_io_perm_failure. This state is
not checked in many of the network drivers.
The patch fixes the omission in the e1000 driver.
Based on Mike Mason's similar patch for e1000e.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
CC: Mike Mason <mmlnx@us.ibm.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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as reported by kerneloops.org
[ 121.781161] ------------[ cut here ]------------
[ 121.781171] WARNING: at lib/dma-debug.c:793 check_unmap+0x14e/0x577()
[ 121.781173] Hardware name: S5520HC
[ 121.781177] e1000 0000:0a:00.0: DMA-API: device driver tries to free DMA
memory it has not allocated [device address=0x00000001d688b0fa] [size=1522
bytes]
[ 121.781180] Modules linked in: e1000 mdio dca [last unloaded: ixgbe]
[ 121.781187] Pid: 4793, comm: bash Tainted: P 2.6.30-master-06161113 #3
[ 121.781190] Call Trace:
[ 121.781195] [<ffffffff8123056f>] ? check_unmap+0x14e/0x577
[ 121.781201] [<ffffffff81057a19>] warn_slowpath_common+0x77/0x8f
[ 121.781205] [<ffffffff81057ae1>] warn_slowpath_fmt+0x9f/0xa1
[ 121.781212] [<ffffffff81477ce2>] ? _spin_lock_irqsave+0x3f/0x49
[ 121.781216] [<ffffffff8122fa97>] ? get_hash_bucket+0x28/0x33
[ 121.781220] [<ffffffff8123056f>] check_unmap+0x14e/0x577
[ 121.781225] [<ffffffff810e4f48>] ? check_bytes_and_report+0x38/0xcb
[ 121.781230] [<ffffffff81230bbf>] debug_dma_unmap_page+0x80/0x92
[ 121.781234] [<ffffffff8122e549>] ? unmap_single+0x1a/0x4e
[ 121.781239] [<ffffffff813901e1>] ? __kfree_skb+0x74/0x78
[ 121.781250] [<ffffffffa00662ef>] pci_unmap_single+0x64/0x6d [e1000]
[ 121.781259] [<ffffffffa0066344>] e1000_clean_rx_ring+0x4c/0xbf [e1000]
[ 121.781268] [<ffffffffa00663df>] e1000_clean_all_rx_rings+0x28/0x36 [e1000]
[ 121.781277] [<ffffffffa0067464>] e1000_down+0x138/0x141 [e1000]
[ 121.781286] [<ffffffffa00681c2>] __e1000_shutdown+0x6b/0x198 [e1000]
[ 121.781296] [<ffffffffa0068405>] e1000_suspend+0x17/0x50 [e1000]
[ 121.781301] [<ffffffff81237665>] pci_legacy_suspend+0x3b/0xbe
[ 121.781305] [<ffffffff81237bc6>] pci_pm_suspend+0x3e/0xf1
[ 121.781310] [<ffffffff812eaf1c>] pm_op+0x57/0xde
[ 121.781314] [<ffffffff812eb444>] dpm_suspend_start+0x31e/0x470
[ 121.781319] [<ffffffff810877da>] suspend_devices_and_enter+0x3e/0x1a2
[ 121.781323] [<ffffffff81087a0f>] enter_state+0xd1/0x127
[ 121.781327] [<ffffffff8108717a>] state_store+0xa7/0xc9
[ 121.781332] [<ffffffff81221843>] kobj_attr_store+0x17/0x19
[ 121.781336] [<ffffffff8113c01e>] sysfs_write_file+0xe5/0x121
[ 121.781341] [<ffffffff810ed165>] vfs_write+0xab/0x105
[ 121.781344] [<ffffffff810ed279>] sys_write+0x47/0x6d
[ 121.781349] [<ffffffff81027aab>] system_call_fastpath+0x16/0x1b
[ 121.781352] ---[ end trace 97bacaaac2ed7786 ]---
Fix is to correctly zero out internal ->dma value when unmapping
and make sure never to unmap unless there specifically was a mapping done.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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driver was mixing NET_IP_ALIGN count bytes in map/unmap calls
unevenly. Only map the bytes that the hardware might dma into
also fix unmap related bug where ->dma was not being cleared
after unmap
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch addresses three WARN_ON statements from DMA-API debug code
ixgbe is mapping more than it unmaps, reduce the length of the map call and
remove the "used once" local variable.
found by Joerg Roedel <joerg.roedel@amd.com> in 2.6.30, so is a candidate
for -stable.
in addition, fix missing ->dma = 0 after unmap to prevent double free with
pci_unmap_single
and lastly, don't unmap (half) pages that aren't mapped.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adapter link advertisement capabilities were not persistent during
adapter resets. While configuring multispeed fiber link check for
phy autoneg_advertised settings before overwriting with default
link capabilities
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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82599 single speed fiber modules only support 10G/Full. Return
proper device capabilities while querrying the adapter and error
while changing device advertisement/speed/duplex capabilities.
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We had a wide range of log messages for the same sort of SFP
failure. This patch makes them all more similar and less
confusing along with converting them to dev_err.
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that netdev has its own stats structure we should use that
instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that netdev has its own stats structure we should use that
instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that netdev has its own stats structure we should use that
instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that netdev has its own stats structure we should use that
instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that netdev has its own stats structure we should use that
instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that netdev has its own stats structure we should use that
instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is the same fix as commit
7959ea254ed18faee41160b1c50b3c9664735967 ("bnx2: Fix the behavior of
ethtool when ONBOOT=no"), but for bnx2x:
--------------------
When configure in ifcfg-eth* is ONBOOT=no,
the behavior of ethtool command is wrong.
# grep ONBOOT /etc/sysconfig/network-scripts/ifcfg-eth2
ONBOOT=no
# ethtool eth2 | tail -n1
Link detected: yes
I think "Link detected" should be "no".
--------------------
Signed-off-by: Naohiro Ooiwa <nooiwa@miraclelinux.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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While testing the driver on PPC, we ran into a crash with LRO, Jumbo frames.
With CONFIG_PPC_64K_PAGES configured (a default in PPC), MAX_SKB_FRAGS drops to 3 and we were crossing the array limits on skb_shinfo(skb)->frags[].
Now we coalesce the frags from the same physical page into one slot in
skb_shinfo(skb)->frags[] and go to the next index when the frag is from
different physical page.
This patch is against the net-2.6 tree.
Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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sky2 driver on PowerPC targets floods kernel log with following errors:
eth1: hw csum failure.
Call Trace:
[ef84b8a0] [c00075e4] show_stack+0x50/0x160 (unreliable)
[ef84b8d0] [c02fa178] netdev_rx_csum_fault+0x3c/0x5c
[ef84b8f0] [c02f6920] __skb_checksum_complete_head+0x7c/0x84
[ef84b900] [c02f693c] __skb_checksum_complete+0x14/0x24
[ef84b910] [c0337e08] tcp_v4_rcv+0x4c8/0x6f8
[ef84b940] [c031a9c8] ip_local_deliver+0x98/0x210
[ef84b960] [c031a788] ip_rcv+0x38c/0x534
[ef84b990] [c0300338] netif_receive_skb+0x260/0x36c
[ef84b9c0] [c025de00] sky2_poll+0x5dc/0xcf8
[ef84ba20] [c02fb7fc] net_rx_action+0xc0/0x144
The NIC is Yukon-2 EC chip revision 1.
Converting checksum field from le16 to CPU byte order fixes the issue.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add missing GPL flag and description.
mdio: module license 'unspecified' taints kernel.
Disabling lock debugging due to kernel taint
Signed-off-by: Nicolas Reinecke <nr <at> das-labor.org>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Unsigned boguscnt cannot be less than 0.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fixes the case when ucc_geth or gianfar are compiled
as modules. Without this patch the call to phy_connect() fails.
Signed-off-by: Ionut Nicu <ionut.nicu@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Tell PCI core that atl1* device can wakeup the system when WOL is
enabled by calling device_set_wakeup_enable.
Joerg noted that his atl1e device WOL fine after enabling it with
ethtool and changing /sys/class/net/eth0/device/power/wakeup to enabled
Tested on atl1e: https://bugzilla.novell.com/show_bug.cgi?id=493214
Tested by: Joerg Reuter <jreuter@novell.com>
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts commit ae0e8e82205c903978a79ebf5e31c670b61fa5b4.
This change had two problems:
1) Since it frees the stats in the drivers' close method, we
can OOPS in the transmit routine.
2) stats are no longer remembered across ifdown/ifup which
disagrees with how every other device operates.
Thanks to analysis and test patch from Serge E. Hallyn
and initial OOPS report by Sachin Sant.
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fixes and obvious typo in the netdev_ops initialization:
ndo_so_ioctl should be ndo_do_ioctl.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6:
bnx2: Fix the behavior of ethtool when ONBOOT=no
qla3xxx: Don't sleep while holding lock.
qla3xxx: Give the PHY time to come out of reset.
ipv4 routing: Ensure that route cache entries are usable and reclaimable with caching is off
net: Move rx skb_orphan call to where needed
ipv6: Use correct data types for ICMPv6 type and code
net: let KS8842 driver depend on HAS_IOMEM
can: let SJA1000 driver depend on HAS_IOMEM
netxen: fix firmware init handshake
netxen: fix build with without CONFIG_PM
netfilter: xt_rateest: fix comparison with self
netfilter: xt_quota: fix incomplete initialization
netfilter: nf_log: fix direct userspace memory access in proc handler
netfilter: fix some sparse endianess warnings
netfilter: nf_conntrack: fix conntrack lookup race
netfilter: nf_conntrack: fix confirmation race condition
netfilter: nf_conntrack: death_by_timeout() fix
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I found a little bug.
When configure in ifcfg-eth* is ONBOOT=no,
the behavior of ethtool command is wrong.
# grep ONBOOT /etc/sysconfig/network-scripts/ifcfg-eth2
ONBOOT=no
# ethtool eth2 | tail -n1
Link detected: yes
I think "Link detected" should be "no".
Signed-off-by: Ooiwa Naohiro <nooiwa@miraclelinux.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fixes this compile error on s390:
CC drivers/net/ks8842.o
drivers/net/ks8842.c: In function 'ks8842_select_bank':
drivers/net/ks8842.c:124: error: implicit declaration of function 'iowrite16'
drivers/net/ks8842.c: In function 'ks8842_write8':
drivers/net/ks8842.c:131: error: implicit declaration of function 'iowrite8'
Cc: Richard Rojfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fixes this compile error on s390:
drivers/net/can/sja1000/sja1000_platform.c: In function 'sp_read_reg':
drivers/net/can/sja1000/sja1000_platform.c:42: error: implicit declaration of function 'ioread8'
drivers/net/can/sja1000/sja1000_platform.c: In function 'sp_write_reg':
drivers/net/can/sja1000/sja1000_platform.c:47: error: implicit declaration of function 'iowrite8'
drivers/net/can/sja1000/sja1000_platform.c: In function 'sp_probe':
drivers/net/can/sja1000/sja1000_platform.c:79: error: implicit declaration of function 'ioremap_nocache'
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make sure all functions run firmware init handshake.
If PCI function 0 fails to initialize firmware, mark the
state failed so that other functions on the same board
bail out quickly instead of waiting 30s for firmware
handshake.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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wrap pci suspend() and resume() with CONFIG_PM check.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
RDMA: Add __init/__exit macros to addr.c and cma.c
IB/ehca: Bump version number
mlx4_core: Fix dma_sync_single_for_cpu() with matching for_device() calls
IB/mthca: Replace dma_sync_single() use with proper functions
RDMA/nes: Fix FIN state handling under error conditions
RDMA/nes: Fix max_qp_init_rd_atom returned from query device
IB/ehca: Ensure that guid_entry index is not negative
IB/ehca: Tolerate dynamic memory operations before driver load
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Commit 5d23a1d2 ("net: replace dma_sync_single with
dma_sync_single_for_cpu") replaced uses of the deprectated function
dma_sync_single() with calls to dma_sync_single_for_cpu(). However,
to be correct, the code should do a sync for_cpu() before touching the
memory and for_device() after it's done.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (38 commits)
fusion: mptsas, fix lock imbalance
[SCSI] scsi_transport_fc: replace BUS_ID_SIZE by fixed count
sd, sr: fix Driver 'sd' needs updating message
scsi_transport_iscsi: return -EOVERFLOW for Too many iscsi targets
fc_transport: Selective return value from BSG timeout function
fc_transport: The softirq_done function registration for BSG request
sym53c8xx: ratelimit parity errors
explain the hidden scsi_wait_scan Kconfig variable
ibmvfc: Fix endless PRLI loop in discovery
ibmvfc: Process async events before command responses
libfc: Add runtime debugging with debug_logging module parameter
libfcoe: Add runtime debugging with module param debug_logging
fcoe: Add runtime debug logging with module parameter debug_logging
scsi_debug: Add support for physical block exponent and alignment
cnic: add NETDEV_1000 and NETDEVICES to Kconfig select
cnic: Fix __symbol_get() build error.
Revert "[SCSI] cnic: fix error: implicit declaration of function ‘__symbol_get’"
ipr: differentiate pci-x and pci-e based adapters
ipr: add test for MSI interrupt support
scsi_transport_spi: Blacklist Ultrium-3 tape for IU transfers
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Ingo molnar <mingo@elte.hu> reported the error
drivers/net/cnic.c:2520: error: implicit declaration of function ‘__symbol_get’
when CONFIG_MODULES is not defined. Fix by using symbol_get() instead.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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‘__symbol_get’"
This reverts commit bc3bf8fd330ce981ce632a1a4a283eee46838f32.
All the commit did was add a second #include of <linux/module.h> which is
the wrong fix.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/czankel/xtensa-2.6:
xtensa: enable m41t80 driver in s6105_defconfig
xtensa: add m41t62 rtc to s6105 platform
xtensa: enable s6gmac in s6105_defconfig
xtensa: s6105 specific configuration for s6gmac
s6gmac: xtensa s6000 on-chip ethernet driver
xtensa: support s6000 gpio irqs and alternate function selection
xtensa: s6000 dma engine support
xtensa: allow variant to initialize own irq chips
xtensa: cache inquiry and unaligned cache handling functions
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The s6000 on-chip MAC supports 10/100/1000Mbit and is connected to an
external PHY via MII or RGMII interface.
[jw@emlix.com: don't use device->bus_id directly]
Signed-off-by: Oskar Schirmer <os@emlix.com>
Signed-off-by: Daniel Glockner <dg@emlix.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Zankel <chris@zankel.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (43 commits)
via-velocity: Fix velocity driver unmapping incorrect size.
mlx4_en: Remove redundant refill code on RX
mlx4_en: Removed redundant check on lso header size
mlx4_en: Cancel port_up check in transmit function
mlx4_en: using stop/start_all_queues
mlx4_en: Removed redundant skb->len check
mlx4_en: Counting all the dropped packets on the TX side
usbnet cdc_subset: fix issues talking to PXA gadgets
Net: qla3xxx, remove sleeping in atomic
ipv4: fix NULL pointer + success return in route lookup path
isdn: clean up documentation index
cfg80211: validate station settings
cfg80211: allow setting station parameters in mesh
cfg80211: allow adding/deleting stations on mesh
ath5k: fix beacon_int handling
MAINTAINERS: Fix Atheros pattern paths
ath9k: restore PS mode, before we put the chip into FULL SLEEP state.
ath9k: wait for beacon frame along with CAB
acer-wmi: fix rfkill conversion
ath5k: avoid PCI FATAL interrupts by restoring RETRY_TIMEOUT disabling
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When a packet is greater than ETH_ZLEN, we end up assigning the
boolean result of a comparison to the size we unmap.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Our RX rings are always full, there is no need to check whether
we need to fill them or not. If we fail to allocate a new socket
buffer, the incoming packet is dropped an the ring remains full.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This check that verifies that the LSO header along with control
segment and first data segment do not cross 128 bytes is no longer
required.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When closing the port, we stop all transmit queues under the transmit
lock. It ensures that we will not attempt to transmit new packets after
the physical port was closed.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After we moved to be a multi queue device, need to stop/start
all of our transmit queues.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We don't need this check in the transmit function
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reporting the counter's value through 'ethtool -S'
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The host-side CDC subset driver is binding more specifically
than it should ... only to PXA 210/25x/26x Linux-USB gadgets.
Loosen that restriction to match the gadget driver driver.
This will various PXA 27x and PXA 3xx devices happier when
talking to Linux hosts, potentially others.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Tested-by: Aric D. Blumer <aric@sdgsystems.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We cannot sleep in ql_reset_work under spinlock, unlock before sleep,
relock after.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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