Commit Graph

23 Commits

Author SHA1 Message Date
Stephen Hemminger
abec42a4f8 e1000: sparse warnings fixes
Fix sparse warnings and problems from e1000 driver.

Added a sparse fix for the module param array index
-- Auke

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-30 14:32:17 -04:00
Milind Arun Choudhary
9099cfb917 e1000: ROUND_UP macro cleanup in drivers/net/e1000
E1000_ROUNDUP macro cleanup, use ALIGN

Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 11:01:07 -04:00
Jesse Brandeburg
9990fa3cbd e1000: simplify case handling gigabit at half duplex
Remvoe duplicate code handling erraneous user supplied wrong case
of gigabit speed with half duplex.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2007-02-05 16:58:41 -05:00
Jesse Brandeburg
7d16e65ba5 [PATCH] e1000: The user-supplied itr setting needs the lower 2 bits masked off
The lower 2 bits of a user-supplied itr setting (via ethtool) need to be
masked off: These lower two bits are used as control bits.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-26 15:51:28 -05:00
Jesse Brandeburg
835bb12983 e1000: add dynamic itr modes
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>
2006-12-02 00:12:00 -05:00
Auke Kok
04fedbfbc3 e1000: reorder e1000_param.c
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>
2006-12-02 00:12:00 -05:00
Jeff Kirsher
11241b1069 e1000: rename flow control symbols
Sogned-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-09-27 12:53:28 -07:00
Auke Kok
0abb6eb128 e100, e1000, ixgb: update copyright header and remove LICENSE
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>
2006-09-27 12:53:14 -07:00
Auke Kok
1db2740d78 e1000: Use module param array code
Use module param array code to distinguish between defaults and user
specified values.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
2006-08-28 14:56:32 -07:00
Auke Kok
1f9e7e3d32 e1000: allow user to disable ich8 lock loss workaround
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>
2006-06-27 09:08:26 -07:00
Auke Kok
17231712ab e1000: rework module param code with uninitialized values
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>
2006-06-27 09:06:59 -07:00
Auke Kok
9a53a20298 e1000: add smart power down code
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>
2006-06-27 09:06:45 -07:00
Auke Kok
3d41e30aa3 e1000: Version bump, contact fix, year string change
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>
2006-04-14 19:05:31 -07:00
Jeff Kirsher
7e6c9861bb e1000: Fix network problems when forced at 100Mb/s and to fix TSO when 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>
2006-03-02 18:19:30 -08:00
Jesse Brandeburg
96838a40f0 [PATCH] e1000: Fix whitespace
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>
2006-01-18 16:17:58 -05:00
Jeff Kirsher
38bd3b2629 [PATCH] e1000: Removed unused variables and initialized variables
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 07:51:04 -05:00
Jeff Kirsher
f11b7f8535 [PATCH] e1000: Fix flow control water marks
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>
2006-01-17 07:44:50 -05:00
Jeff Kirsher
f56799ea39 [PATCH] e1000: Fix adapter structure and prepare for multique fix
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 07:40:11 -05:00
Jeff Kirsher
571281972e [PATCH] e1000: Fix SoL/IDER link and loopback
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>
2006-01-17 07:40:10 -05:00
Kenji Kaneshige
32a4ec9746 [PATCH] e1000: Fix invalid memory reference
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>
2006-01-09 10:54:48 -05:00
Mallikarjuna R Chilakala
581d708eb4 e1000: multi-queue defines/modification to data structures
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>
2005-10-04 07:01:55 -04:00
Malli Chilakala
2648345fcb [PATCH] e1000:Driver version,white space,comments,device id
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 20:48:55 -04:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
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!
2005-04-16 15:20:36 -07:00