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path: root/drivers/net/e1000/e1000_param.c
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* e1000: add dynamic itr modesJesse Brandeburg2006-12-021-8/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* e1000: reorder e1000_param.cAuke Kok2006-12-021-58/+20
| | | | | | | | This file needs some cleanups and reordering - logically order it so that relevant defines and code are together with properly quoted defaults. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e1000: rename flow control symbolsJeff Kirsher2006-09-271-6/+6
| | | | | Sogned-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e100, e1000, ixgb: update copyright header and remove LICENSEAuke Kok2006-09-271-18/+17
| | | | | | | | 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>
* e1000: Use module param array codeAuke Kok2006-08-281-51/+110
| | | | | | | Use module param array code to distinguish between defaults and user specified values. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e1000: allow user to disable ich8 lock loss workaroundAuke Kok2006-06-271-0/+21
| | | | | | | | | | The workaround for the ich8 lock loss problem is only needed for a very small amount of systems. This adds an option for the user to disable the workaround. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e1000: rework module param code with uninitialized valuesAuke Kok2006-06-271-106/+61
| | | | | | | | | We can take uninitialized values into account which minimizes code and allows us to simplify the parameter checking code greatly. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e1000: add smart power down codeAuke Kok2006-06-271-0/+25
| | | | | | | | | | 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>
* e1000: Version bump, contact fix, year string changeAuke Kok2006-04-141-1/+2
| | | | | | | | | | | | | 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>
* e1000: Fix network problems when forced at 100Mb/s and to fix TSO when ↵Jeff Kirsher2006-03-021-1/+1
| | | | | | | | 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>
* [PATCH] e1000: Fix whitespaceJesse Brandeburg2006-01-181-22/+22
| | | | | | | Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] e1000: Removed unused variables and initialized variablesJeff Kirsher2006-01-171-1/+1
| | | | | | | 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>
* [PATCH] e1000: Fix flow control water marksJeff Kirsher2006-01-171-1/+1
| | | | | | | | | | Fixed flow control water marks based on PBA size. Store flow control state in original_fc in addition to fc. 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>
* [PATCH] e1000: Fix adapter structure and prepare for multique fixJeff Kirsher2006-01-171-2/+2
| | | | | | | | | 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>
* [PATCH] e1000: Fix SoL/IDER link and loopbackJeff Kirsher2006-01-171-0/+6
| | | | | | | | | Fix so that if a SoL/IDER session is active, do not allow operations which require a PHY reset and instead log a message. 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>
* [PATCH] e1000: Fix invalid memory referenceKenji Kaneshige2006-01-091-3/+7
| | | | | | | | | | | | | | Fix an invalid memory reference in the e1000 driver which would cause kernel panic. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Cc: Jeb Cramer <cramerj@intel.com> Cc: John Ronciak <john.ronciak@intel.com> Cc: Ganesh Venkatesan <ganesh.venkatesan@intel.com> Cc: Jeff Garzik <jgarzik@pobox.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* e1000: multi-queue defines/modification to data structuresMallikarjuna R Chilakala2005-10-041-2/+8
| | | | | | | | | | 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>
* [PATCH] e1000:Driver version,white space,comments,device idMalli Chilakala2005-05-121-2/+1
| | | | | | | | | 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
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+744
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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