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path: root/drivers/net/ethernet/intel/e1000e (follow)
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2013-01-27e1000e: fix PHY init workarounds for i217/i218Bruce Allan1-0/+9
Toggling the LANPHYPC Value bit cycles the power on the PHY and sets it back to power-on defaults. This includes setting it's MAC-PHY messaging mode to use the PCIe-like interconnect, so the MAC must also be set back from SMBus mode to PCIe mode otherwise the PHY can be inaccessible. 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>
2013-01-27e1000e: correct maximum frame size on i217/i218Bruce Allan1-1/+1
The largest jumbo frame supported by the i217 and i218 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>
2013-01-27e1000e: update copyright dateBruce Allan15-16/+16
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>
2013-01-27e1000e: remove prototype of non-existent functionBruce Allan1-2/+0
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>
2013-01-27e1000e: prevent hardware from automatically configuring PHY on I217/I218Bruce Allan1-15/+7
As done with the previous generation managed 82579, prevent the PHY from being put into an unknown state by blocking the hardware from automatically configuring the PHY as done with the previous generation managed 82579. Instead, the driver should configure the PHY with contents of the EEPROM image. 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>
2013-01-27e1000e: enable ECC on I217/I218 to catch packet buffer memory errorsBruce Allan6-0/+71
In rare instances, memory errors have been detected in the internal packet buffer memory on I217/I218 when stressed under certain environmental conditions. Enable Error Correcting Code (ECC) in hardware to catch both correctable and uncorrectable errors. Correctable errors will be handled by the hardware. Uncorrectable errors in the packet buffer will cause the packet to be received with an error indication in the buffer descriptor causing the packet to be discarded. If the uncorrectable error is in the descriptor itself, the hardware will stop and interrupt the driver indicating the error. The driver will then reset the hardware in order to clear the error and restart. Both types of errors will be accounted for in statistics counters. 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>
2013-01-27e1000e: add support for IEEE-1588 PTPBruce Allan7-3/+416
Add PTP IEEE-1588 support and make accesible via the PHC subsystem. v2: make e1000e_ptp_clock_info a static const struct per Stephen Hemminger Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Reviewed-by: Jacob Keller <Jacob.e.keller@intel.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-27e1000e: fix flow-control thresholds for jumbo frames on 82579/I217/I218Bruce Allan1-6/+9
The previous static flow-control thresholds were causing unnecessary pause packets to be transmitted when jumbo frames are configured reducing the throughput. 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>
2013-01-27e1000e: fix ethtool offline register test for I217Bruce Allan1-8/+17
The SHRAH[9] register on I217 has a different R/W bit-mask than RAR and SHRAL/H registers. Set R/W bit-mask appropriately for SHRAH[9] when testing the R/W ability of the register. Also, fix the error message log format so that it does not provide misleading information (i.e. the logged register address could be incorrect). 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>
2013-01-18e1000e: add support for hardware timestamping on some devicesBruce Allan7-8/+462
On 82574, 82583, 82579, I217 and I218 add support for hardware time stamping of all or no Rx packets and Tx packets which have the SKBTX_HW_TSTAMP flag set. Update the .get_ts_info ethtool operation to report the supported time stamping modes, and enable and disable hardware time stamping with the SIOCSHWTSTAMP ioctl. 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>
2013-01-18e1000e: Use standard #defines for PCIe Capability ASPM fieldsBjorn Helgaas1-2/+9
Use the standard #defines for PCIe Capability ASPM fields. Previously we used PCIE_LINK_STATE_L0S and PCIE_LINK_STATE_L1 directly, but these are defined for the Linux ASPM interfaces, e.g., pci_disable_link_state(), and only coincidentally match the actual register bits. PCIE_LINK_STATE_CLKPM, also part of that interface, does not match the register bit. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: e1000-devel@lists.sourceforge.net Acked-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>
2013-01-18e1000e: add ethtool .get_eee/.set_eeeBruce Allan5-23/+167
Add the ability to query and set Energy Efficient Ethernet parameters via ethtool for applicable devices. 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>
2013-01-16e1000e: merge multiple conditional statements into oneBruce Allan1-6/+5
Cleanup a set of conditional tests. 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>
2013-01-16e1000e: cleanup code duplicationBruce Allan1-5/+1
The removed code block is duplicated in e1000e_write_itr() so use that instead. 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>
2013-01-16e1000e: cleanup magic numberBruce Allan1-2/+2
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>
2013-01-16e1000e: cleanup unnecessary line wrapBruce Allan1-2/+1
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>
2013-01-16e1000e: cleanup unusual comment placementBruce Allan1-1/+1
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>
2013-01-16e1000e: cleanup redundant statistics counterBruce Allan1-1/+0
rx_long_byte_count can be removed since it is duplicated in rx_bytes 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>
2013-01-16e1000e: resolve checkpatch PREFER_PR_LEVEL warningBruce Allan1-5/+3
WARNING: Prefer netdev_info(netdev, ... then dev_info(dev, ... then pr_info(... to printk(KERN_INFO ... v2 - remove unnecessary "e1000e:" prefix as pointed out by Joe Perches since that produces a redundant "e1000e:" in the log message Cc: Joe Perches <joe@perches.com> 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>
2013-01-15e1000e: add missing bailout on errorBruce Allan1-0/+2
...discovered during code inspection. 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>
2013-01-15e1000e: unexpected "Reset adapter" message when cable pulledBruce Allan2-20/+21
When there is heavy traffic and the cable is pulled, the driver must reset the adapter to flush the Tx queue in hardware. This causes the reset path to be scheduled and logs the message "Reset adapter" which could be mis- interpreted as an error by the user. Change how the reset path is invoked for this scenario by using the same method done in an existing work-around for 80003es2lan (i.e. set a flag and if the flag is set in the reset code do not log the "Reset adapter" message since the reset is expected). Re-name the FLAG_RX_RESTART_NOW to FLAG_RESTART_NOW since it is used for resets in both the Rx and Tx specific code. 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>
2013-01-15e1000e: fix enabling of EEE on 82579 and I217Bruce Allan1-29/+65
Energy Efficient Ethernet on 82579 and I217 should only be enabled if not disabled by the user, if the link is full duplex and the link partner has similar EEE capabilities (stored in different EMI registers on the two different parts). After enabling EEE, read the IEEE MMD register 3.1 (which is also stored in different EMI registers on the two different parts) to clear the count of received Tx/Rx LPI indications. Also, rename I217_EEE_100_SUPPORTED to I82579_EEE_100_SUPPORTED to indicate the bit is valid starting with I82579 (released before I217). 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>
2013-01-15e1000e: 82577: workaround for link drop issueBruce Allan1-1/+7
When connected to certain switches, the 82577 PHY might drop link unexpectedly. Work around the issue by setting the Mean Square Error higher than the hardware default. 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>
2013-01-15e1000e: helper functions for accessing EMI registersBruce Allan1-19/+65
The Extended Management Interface (EMI) registers are accessed by first writing the EMI register offset to the EMI_ADDR regiter and then either reading or writing the data to/from the EMI_DATA register. Add helper functions for performing these steps and convert existing EMI register accesses accordingly. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-15e1000e: Invalid Image CSUM bit changed for I217Bruce Allan2-8/+25
On I217, the bit that indicates an invalid EEPROM (NVM) image checksum has changed from previous ICH/PCH LOMs. When validating the EEPROM checksum, check the appropriate bit on different devices. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2013-01-15e1000e: Acquire/release semaphore when writing each EEPROM pageBruce Allan1-11/+11
When data blocks are written to the EEPROM, the HW/SW/FW semaphore must be held for the duration. With large data blocks on 80003es2lan, 82571 and 82572, this can take too long and cause the firmware to take ownership of the semaphore and consequently ownership of writes to the EEPROM. Instead, acquire and release the semaphore for each page of the block written. 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>
2013-01-15e1000e: SerDes autoneg flow controlBruce Allan3-3/+132
Enables flow control to be set in SerDes autoneg mode. This is what is done for copper, but relies on a different set of register/bit checks since this is all done within the Mac registers. Remove inapplicable comment in defines.h 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>
2013-01-08remove init of dev->perm_addr in driversJiri Pirko1-3/+2
perm_addr is initialized correctly in register_netdevice() so to init it in drivers is no longer needed. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-07drivers/net: fix up function prototypes after __dev* removalsGreg Kroah-Hartman2-4/+3
The __dev* removal patches for the network drivers ended up messing up the function prototypes for a bunch of drivers. This patch fixes all of them back up to be properly aligned. Bonus is that this almost removes 100 lines of code, always a nice surprise. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-03net/intel: remove __dev* attributesBill Pemberton2-8/+8
CONFIG_HOTPLUG is going away as an option. As result the __dev* markings will be going away. Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Jesse Brandeburg <jesse.brandeburg@intel.com> Cc: Bruce Allan <bruce.w.allan@intel.com> Cc: Carolyn Wyborny <carolyn.wyborny@intel.com> Cc: Don Skidmore <donald.c.skidmore@intel.com> Cc: Greg Rose <gregory.v.rose@intel.com> Cc: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Cc: Alex Duyck <alexander.h.duyck@intel.com> Cc: John Ronciak <john.ronciak@intel.com> Cc: Tushar Dave <tushar.n.dave@intel.com> Cc: e1000-devel@lists.sourceforge.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-01e1000e: cosmetic cleanup of commentsBruce Allan13-790/+416
Update comments to conform to the preferred style for networking code as described in ./Documentation/CodingStyle and checked for in the recently added checkpatch NETWORKING_BLOCK_COMMENT_STYLE test. 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>
2012-10-23e1000e: Minimum packet size must be 17 bytesTushar Dave1-0/+11
This is a HW requirement. Although a buffer as short as 1 byte is allowed, the total length of packet before, padding and CRC insertion, must be at least 17 bytes. So pad all small packets manually up to 17 bytes before delivering them to HW. Signed-off-by: Tushar Dave <tushar.n.dave@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-10-10e1000e: Change wthresh to 1 to avoid possible Tx stallsHiroaki SHIMODA2-4/+4
This patch originated from Hiroaki SHIMODA but has been modified by Intel with some minor cleanups and additional commit log text. Denys Fedoryshchenko and others reported Tx stalls on e1000e with BQL enabled. Issue was root caused to hardware delays. They were introduced because some of the e1000e hardware with transmit writeback bursting enabled, waits until the driver does an explict flush OR there are WTHRESH descriptors to write back. Sometimes the delays in question were on the order of seconds, causing visible lag for ssh sessions and unacceptable tx completion latency, especially for BQL enabled kernels. To avoid possible Tx stalls, change WTHRESH back to 1. The current plan is to investigate a method for re-enabling WTHRESH while not harming BQL, but those patches will be later for net-next if they work. please enqueue for stable since v3.3 as this bug was introduced in commit 3f0cfa3bc11e7f00c9994e0f469cbc0e7da7b00c Author: Tom Herbert <therbert@google.com> Date: Mon Nov 28 16:33:16 2011 +0000 e1000e: Support for byte queue limits Changes to e1000e to use byte queue limits. Reported-by: Denys Fedoryshchenko <denys@visp.net.lb> Tested-by: Denys Fedoryshchenko <denys@visp.net.lb> Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com> CC: eric.dumazet@gmail.com CC: therbert@google.com Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-09e1000e: add device IDs for i218Bruce Allan2-0/+4
i218 is the next-generation LOM that will be available on systems with the Lynx Point LP Platform Controller Hub (PCH) chipset from Intel. This patch provides the initial support of those devices. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-10-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds4-13/+85
Pull networking changes from David Miller: 1) GRE now works over ipv6, from Dmitry Kozlov. 2) Make SCTP more network namespace aware, from Eric Biederman. 3) TEAM driver now works with non-ethernet devices, from Jiri Pirko. 4) Make openvswitch network namespace aware, from Pravin B Shelar. 5) IPV6 NAT implementation, from Patrick McHardy. 6) Server side support for TCP Fast Open, from Jerry Chu and others. 7) Packet BPF filter supports MOD and XOR, from Eric Dumazet and Daniel Borkmann. 8) Increate the loopback default MTU to 64K, from Eric Dumazet. 9) Use a per-task rather than per-socket page fragment allocator for outgoing networking traffic. This benefits processes that have very many mostly idle sockets, which is quite common. From Eric Dumazet. 10) Use up to 32K for page fragment allocations, with fallbacks to smaller sizes when higher order page allocations fail. Benefits are a) less segments for driver to process b) less calls to page allocator c) less waste of space. From Eric Dumazet. 11) Allow GRO to be used on GRE tunnels, from Eric Dumazet. 12) VXLAN device driver, one way to handle VLAN issues such as the limitation of 4096 VLAN IDs yet still have some level of isolation. From Stephen Hemminger. 13) As usual there is a large boatload of driver changes, with the scale perhaps tilted towards the wireless side this time around. Fix up various fairly trivial conflicts, mostly caused by the user namespace changes. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1012 commits) hyperv: Add buffer for extended info after the RNDIS response message. hyperv: Report actual status in receive completion packet hyperv: Remove extra allocated space for recv_pkt_list elements hyperv: Fix page buffer handling in rndis_filter_send_request() hyperv: Fix the missing return value in rndis_filter_set_packet_filter() hyperv: Fix the max_xfer_size in RNDIS initialization vxlan: put UDP socket in correct namespace vxlan: Depend on CONFIG_INET sfc: Fix the reported priorities of different filter types sfc: Remove EFX_FILTER_FLAG_RX_OVERRIDE_IP sfc: Fix loopback self-test with separate_tx_channels=1 sfc: Fix MCDI structure field lookup sfc: Add parentheses around use of bitfield macro arguments sfc: Fix null function pointer in efx_sriov_channel_type vxlan: virtual extensible lan igmp: export symbol ip_mc_leave_group netlink: add attributes to fdb interface tg3: unconditionally select HWMON support when tg3 is enabled. Revert "net: ti cpsw ethernet: allow reading phy interface mode from DT" gre: fix sparse warning ...
2012-09-13Merge commit 'v3.6-rc5' into nextBjorn Helgaas3-40/+55
* commit 'v3.6-rc5': (1098 commits) Linux 3.6-rc5 HID: tpkbd: work even if the new Lenovo Keyboard driver is not configured Remove user-triggerable BUG from mpol_to_str xen/pciback: Fix proper FLR steps. uml: fix compile error in deliver_alarm() dj: memory scribble in logi_dj Fix order of arguments to compat_put_time[spec|val] xen: Use correct masking in xen_swiotlb_alloc_coherent. xen: fix logical error in tlb flushing xen/p2m: Fix one-off error in checking the P2M tree directory. powerpc: Don't use __put_user() in patch_instruction powerpc: Make sure IPI handlers see data written by IPI senders powerpc: Restore correct DSCR in context switch powerpc: Fix DSCR inheritance in copy_thread() powerpc: Keep thread.dscr and thread.dscr_inherit in sync powerpc: Update DSCR on all CPUs when writing sysfs dscr_default powerpc/powernv: Always go into nap mode when CPU is offline powerpc: Give hypervisor decrementer interrupts their own handler powerpc/vphn: Fix arch_update_cpu_topology() return value ARM: gemini: fix the gemini build ... Conflicts: drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c drivers/rapidio/devices/tsi721.c
2012-09-12Merge branch 'pci/stephen-const' into nextBjorn Helgaas1-1/+1
* pci/stephen-const: make drivers with pci error handlers const scsi: make pci error handlers const netdev: make pci_error_handlers const PCI: Make pci_error_handlers const
2012-09-07netdev: make pci_error_handlers constStephen Hemminger1-1/+1
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-08-31Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-nextDavid S. Miller3-9/+17
2012-08-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-25/+24
Merge the 'net' tree to get the recent set of netfilter bug fixes in order to assist with some merge hassles Pablo is going to have to deal with for upcoming changes. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-30e1000e: update driver version numberBruce Allan1-1/+1
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>
2012-08-30e1000e: cleanup - remove unnecessary variableBruce Allan1-3/+2
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>
2012-08-30e1000e: cleanup - remove inapplicable commentBruce Allan1-1/+1
Early Receive has been disabled in the driver so this comment is no longer applicable. 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>
2012-08-30e1000e: cleanup strict checkpatch checkBruce Allan1-1/+2
CHECK: multiple assignments should be avoided 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>
2012-08-30e1000e: cleanup strict checkpatch MEMORY_BARRIER checksBruce Allan1-1/+9
Add comments to memory barriers per strict checkpatch. 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>
2012-08-30e1000e: use correct type for read of 32-bit registerBruce Allan1-2/+2
The POEMB register is 32 bits, not 16. 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>
2012-08-30e1000e: DoS while TSO enabled caused by link partner with small MSSBruce Allan2-25/+24
With a low enough MSS on the link partner and TSO enabled locally, the networking stack can periodically send a very large (e.g. 64KB) TCP message for which the driver will attempt to use more Tx descriptors than are available by default in the Tx ring. This is due to a workaround in the code that imposes a limit of only 4 MSS-sized segments per descriptor which appears to be a carry-over from the older e1000 driver and may be applicable only to some older PCI or PCIx parts which are not supported in e1000e. When the driver gets a message that is too large to fit across the configured number of Tx descriptors, it stops the upper stack from queueing any more and gets stuck in this state. After a timeout, the upper stack assumes the adapter is hung and calls the driver to reset it. Remove the unnecessary limitation of using up to only 4 MSS-sized segments per Tx descriptor, and put in a hard failure test to catch when attempting to check for message sizes larger than would fit in the whole Tx ring. Refactor the remaining logic that limits the size of data per Tx descriptor from a seemingly arbitrary 8KB to a limit based on the dynamic size of the Tx packet buffer as described in the hardware specification. Also, fix the logic in the check for space in the Tx ring for the next largest possible packet after the current one has been successfully queued for transmit, and use the appropriate defines for default ring sizes in e1000_probe instead of magic values. This issue goes back to the introduction of e1000e in 2.6.24 when it was split off from e1000. Reported-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Cc: Stable <stable@vger.kernel.org> [2.6.24+] Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-23e1000e: Use PCI Express Capability accessorsJiang Liu1-19/+8
Use PCI Express Capability access functions to simplify e1000e driver. [bhelgaas: split e1000e and igb into separate patches] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-08-22Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-nextDavid S. Miller2-4/+68
Jeff Kirsher says: ==================== This series contains updates to ethtool.h, e1000, e1000e, and igb to implement MDI/MDIx control. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-21e1000e: implement MDI/MDI-X controlJesse Brandeburg1-2/+39
Some users report issues with link failing when connected to certain switches. This gives the user the ability to control the MDI state from the driver, allowing users to work around some improperly behaving switches. Forcing in this driver is for now only allowed when auto-neg is enabled. This is in regards to the related ethtool app patch and bugzilla.kernel.org bug 11998 Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> CC: bruce.w.allan@intel.com CC: n.poppelier@xs4all.nl CC: bastien@durel.org CC: jsveiga@it.eng.br Tested-by: Aaron Brown aaron.f.brown@intel.com Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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