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path: root/drivers/net/e1000/e1000.h
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2006-12-02e1000: add dynamic itr modesJesse Brandeburg
Add a new dynamic itr algorithm, with 2 modes, and make it the default operation mode. This greatly reduces latency and increases small packet performance, at the "cost" of some CPU utilization. Bulk traffic throughput is unaffected. The driver can limit the amount of interrupts per second that the adapter will generate for incoming packets. It does this by writing a value to the adapter that is based on the maximum amount of interrupts that the adapter will generate per second. Setting InterruptThrottleRate to a value greater or equal to 100 will program the adapter to send out a maximum of that many interrupts per second, even if more packets have come in. This reduces interrupt load on the system and can lower CPU utilization under heavy load, but will increase latency as packets are not processed as quickly. The default behaviour of the driver previously assumed a static InterruptThrottleRate value of 8000, providing a good fallback value for all traffic types,but lacking in small packet performance and latency. The hardware can handle many more small packets per second however, and for this reason an adaptive interrupt moderation algorithm was implemented. Since 7.3.x, the driver has two adaptive modes (setting 1 or 3) in which it dynamically adjusts the InterruptThrottleRate value based on the traffic that it receives. After determining the type of incoming traffic in the last timeframe, it will adjust the InterruptThrottleRate to an appropriate value for that traffic. The algorithm classifies the incoming traffic every interval into classes. Once the class is determined, the InterruptThrottleRate value is adjusted to suit that traffic type the best. There are three classes defined: "Bulk traffic", for large amounts of packets of normal size; "Low latency", for small amounts of traffic and/or a significant percentage of small packets; and "Lowest latency", for almost completely small packets or minimal traffic. In dynamic conservative mode, the InterruptThrottleRate value is set to 4000 for traffic that falls in class "Bulk traffic". If traffic falls in the "Low latency" or "Lowest latency" class, the InterruptThrottleRate is increased stepwise to 20000. This default mode is suitable for most applications. For situations where low latency is vital such as cluster or grid computing, the algorithm can reduce latency even more when InterruptThrottleRate is set to mode 1. In this mode, which operates the same as mode 3, the InterruptThrottleRate will be increased stepwise to 70000 for traffic in class "Lowest latency". Setting InterruptThrottleRate to 0 turns off any interrupt moderation and may improve small packet latency, but is generally not suitable for bulk throughput traffic. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Cc: Rick Jones <rick.jones2@hp.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-12-02e1000: add queue restart counterJesse Brandeburg
Add a netif_wake/start_queue counter to the ethtool statistics to indicated to the user that their transmit ring could be too small for their workload. Signed-off-by: Jesse brandeburg <jesse.brandeburg@intel.com> Cc: Jamal Hadi <hadi@cyberus.ca> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-12-02e1000: FIX: enable hw TSO for IPV6Auke Kok
Enable TSO for IPV6. All e1000 hardware supports it. This reduces CPU utilizations by 50% when transmitting IPv6 frames. Fix symbol naming enabling ipv6 TSO. Turn off TSO6 for 10/100. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27e1000: driver state fixes (race fix)Auke Kok
We were plagued by our interrupt handler posting a watchdog event which could occur when our adapter was going down in case a late packet arrived just before e1000_down() finished. This caused the watchdog timer to start after the NIC was down and keep rescheduling it every N seconds. Once the driver unloaded it would panic. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27e1000: remove unused code and make symbols staticNicholas Nunley
Signed-off-by: Nicholas Nunley <nicholas.d.nunley@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27e100, e1000, ixgb: update copyright header and remove LICENSEAuke Kok
This update to the copyright header adds the mailinglist, and aligns it with the kernel licensing as well as remove the offending 'all rights reserved'. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-31e1000: unify WoL capability detection codeJesse Brandeburg
WoL is constantly giving problems and needed a rewrite. Consolidates all WoL capabilities into a single function, and disables WoL for all other ports on the device except for port A. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-28e1000: remove unused part_num reading codeAuke Kok
Remove the code that reads part_num from the EEPROM. This part number is never displayed or queryable by the user. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-28e1000: Whitespace cleanup, cosmetic changesAuke Kok
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-07-14e1000: fix panic on large frame receive when mtu=defaultAuke Kok
A panic was reported when receiving 1522 size packets if using the default MTU. we should set the initial rx buffer length to the value that e1000changemtu sets so that we can receive any packet that would not be dropped by LPE=0. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke.jan.h.kok@intel.com>
2006-07-05Merge branch 'upstream' of git://lost.foo-projects.org/~ahkok/git/netdev-2.6 ↵Jeff Garzik
into upstream Conflicts: drivers/net/e1000/e1000_main.c
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-27e1000: integrate ich8 support into driverAuke Kok
This hooks up the ich8 structure into the driver itself. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-06-27e1000: add smart power down codeAuke Kok
Smart Power Down is a power saving feature in newer e1000 hardware. We disable it because it causes time to link to be long, but make it a user choice. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-06-27e1000: rework driver hardware reset lockingAuke Kok
After studying the driver mac reset code it was found that there were multiple race conditions possible to reset the unit twice or bring it e1000_up() double. This fixes all occurences where the driver needs to reset the mac. We also remove irq requesting/releasing into _open and _close so that while the device is _up we will never touch the irq's. This fixes the double free irq bug that people saw. To make sure that the watchdog task doesn't cause another race we let it run as a non-scheduled task. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-04-14e1000: Version bump, contact fix, year string changeAuke Kok
Add the sourceforge project mailinglist to the contact information. Bump version to 7.0.38-k2 Update copyright string with the new year. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-04-14e1000: Buffer optimizations for small MTUAuke Kok
Remove multi-descriptor support from legacy recieve path Add memory usage efficiency by using more correct size descriptors for small MTU sizes and optimize using LPE for <= 1522 byte frame sizes An extra performance fix that effected our TCP window size growth as a receiver. Set our initial buffer to be 128 bytes instead of 256 to prevent over-socket charge when truesize is computed in the stack. old way: truesize = 256 + l1 = 256 + 1460 = 1716 new way: truesize = 128 + l1 = 128 + 1460 = 1588 The magic value that we can't cross is 1648. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-04-14e1000: Made an adapter struct variable into a local (txb2b)Auke Kok
Made an adapter struct variable into a local (txb2b) Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-11[PATCH] drivers/net/e1000/: proper prototypesAdrian Bunk
This patch moves prototypes of global variables and functions to a header file. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: John Ronciak <john.ronciak@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-02e1000: Added driver comments and whitespace changes. Modified long lines of ↵Jeff Kirsher
code to ensure they would not wrap beyond 80 characters. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02e1000: Fixed the following issues with ESB2 (requires ESB2 support):Jeff Kirsher
- Add restriction for ESB2 to MTU size <=9216 - Removed FIFO errors which were not being used - Fixed issues with loopback - Power management change for saving state and config space - WA to disable recieves and reset device on link loss. Reset needed to be done outside the interrupt context - modified existing tx_timeout_task Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02e1000: Fix network problems when forced at 100Mb/s and to fix TSO when ↵Jeff Kirsher
forced at 100Mb/s Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02e1000: Fix Quadport Wake on LANJeff Kirsher
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-03-02e1000: Remove Multiqueue code until we have support for MSI-X in our hardwareJeff Kirsher
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2006-02-28[PATCH] e1000: revert to single descriptor for legacy receive pathJeff Kirsher
A recent patch attempted to enable more efficient memory usage by using only 2kB descriptors for jumbo frames. The method used to implement this has since been commented upon as "illegal" and in recent kernels even causes a BUG when receiving ip fragments while using jumbo frames. This patch simply goes back to the way things were. We expect some complaints due to order 3 allocations failing to come back due to this change. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
2006-01-17[PATCH] e1000: Added cleaned_count to RX buffer allocationJeff Kirsher
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17[PATCH] e1000: Fix TX queue length based on link speedJeff Kirsher
10/100 speeds seem to have some problems reporting false tx timeouts especially at half duplex. Fixed by using a timeout factor to attempt to mitigate the false timeouts. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17[PATCH] e1000: Fix mulitple queuesJeff Kirsher
Fixed stats when using multiple queues. When multiple queues are enabled, log a message in syslog. Fixed memory allocation for multiple queues. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17[PATCH] e1000: Fix adapter structure and prepare for multique fixJeff Kirsher
Fix adapter structure to handle multiple queues and prepping the driver for full multiple queue support, some changes are ifdef'd our unless you define CONFIG_E1000_MQ. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17[PATCH] Fix e1000 statsJeff Kirsher
Updated the e1000_stats structure and removed mpx for rx_errors and rx_dropped. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-17[PATCH] e1000: General FixesJeff Kirsher
These fixes update the TX and RX ring structures. Prepare driver for up-coming fixes. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-13e1000: Fixes for 8357xJeff Kirsher
- TSO workaround - Fixes eeprom version reporting - Fix loopback test - Fix for WOL Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
2005-10-04e1000: Fixes for packet split related issuesMallikarjuna R Chilakala
Fixes for packet split related issues * On platforms where PAGE_SIZE > 4K, driver will use only required number of pages compared to always using 3 pages. * Packet split won't be used if the PAGE_SIZE is > 16K * Adds a statistics counter to splits. * Setting the non Null ptr to zero sized buffers to solve packet split receive descriptor error * When the no of pages needed is calculated, the header buffer is not included for a given MTU. Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-04e1000: multi-queue defines/modification to data structuresMallikarjuna R Chilakala
defines/modifies data structures, function prototypes and changes to the driver rendering it capable of handling <n> tx/rx queues Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-06-27[PATCH] e1000: Cleanup debug message printed when Tx Unit hang is detectedMalli Chilakala
Cleanup debug message printed when Tx Unit hang is detected Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2005-06-27[PATCH] e1000: Use correct WOL settings for 82544 adaptersMalli Chilakala
Use correct WOL settings for 82544 adapters Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com>
2005-05-12[PATCH] e1000:Driver version,white space,comments,device idMalli Chilakala
Driver version, white space, comments, device id & other Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> diff -up net-drivers-2.6/drivers/net/e1000/e1000_ethtool.c net-drivers-2.6/drivers/net/e1000.new/e1000_ethtool.c
2005-05-12[PATCH] e1000:82573 specific code & packet split codeMalli Chilakala
82573 specific code & packet split code Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> diff -up net-drivers-2.6/drivers/net/e1000/e1000.h net-drivers-2.6/drivers/net/e1000.new/e1000.h
2005-05-12[PATCH] e1000: MSI support for PCI-e adaptersMalli Chilakala
MSI support for PCI-e adapters Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com> Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> diff -up net-drivers-2.6/drivers/net/e1000/e1000.h net-drivers-2.6/drivers/net/e1000.new/e1000.h
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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