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Linux* Base Driver for the Intel(R) PRO/1000 Family of Adapters
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Linux* Base Driver for the Intel(R) PRO/1000 Family of Adapters
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===============================================================
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===============================================================
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-November 15, 2005
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+September 26, 2006
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Contents
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Contents
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@@ -9,6 +9,7 @@ Contents
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- In This Release
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- In This Release
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- Identifying Your Adapter
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- Identifying Your Adapter
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+- Building and Installation
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- Command Line Parameters
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- Command Line Parameters
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- Speed and Duplex Configuration
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- Speed and Duplex Configuration
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- Additional Configurations
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- Additional Configurations
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@@ -41,6 +42,9 @@ or later), lspci, and ifconfig to obtain the same information.
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Instructions on updating ethtool can be found in the section "Additional
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Instructions on updating ethtool can be found in the section "Additional
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Configurations" later in this document.
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Configurations" later in this document.
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+NOTE: The Intel(R) 82562v 10/100 Network Connection only provides 10/100
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+support.
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+
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Identifying Your Adapter
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Identifying Your Adapter
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========================
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========================
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@@ -51,28 +55,27 @@ Driver ID Guide at:
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http://support.intel.com/support/network/adapter/pro100/21397.htm
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http://support.intel.com/support/network/adapter/pro100/21397.htm
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For the latest Intel network drivers for Linux, refer to the following
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For the latest Intel network drivers for Linux, refer to the following
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-website. In the search field, enter your adapter name or type, or use the
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+website. In the search field, enter your adapter name or type, or use the
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networking link on the left to search for your adapter:
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networking link on the left to search for your adapter:
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http://downloadfinder.intel.com/scripts-df/support_intel.asp
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http://downloadfinder.intel.com/scripts-df/support_intel.asp
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-Command Line Parameters =======================
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+Command Line Parameters
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+=======================
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If the driver is built as a module, the following optional parameters
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If the driver is built as a module, the following optional parameters
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-are used by entering them on the command line with the modprobe or insmod
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-command using this syntax:
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+are used by entering them on the command line with the modprobe command
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+using this syntax:
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modprobe e1000 [<option>=<VAL1>,<VAL2>,...]
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modprobe e1000 [<option>=<VAL1>,<VAL2>,...]
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- insmod e1000 [<option>=<VAL1>,<VAL2>,...]
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-
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For example, with two PRO/1000 PCI adapters, entering:
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For example, with two PRO/1000 PCI adapters, entering:
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- insmod e1000 TxDescriptors=80,128
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+ modprobe e1000 TxDescriptors=80,128
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-loads the e1000 driver with 80 TX descriptors for the first adapter and 128
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-TX descriptors for the second adapter.
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+loads the e1000 driver with 80 TX descriptors for the first adapter and
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+128 TX descriptors for the second adapter.
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The default value for each parameter is generally the recommended setting,
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The default value for each parameter is generally the recommended setting,
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unless otherwise noted.
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unless otherwise noted.
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@@ -87,7 +90,7 @@ NOTES: For more information about the AutoNeg, Duplex, and Speed
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http://www.intel.com/design/network/applnots/ap450.htm
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http://www.intel.com/design/network/applnots/ap450.htm
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A descriptor describes a data buffer and attributes related to
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A descriptor describes a data buffer and attributes related to
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- the data buffer. This information is accessed by the hardware.
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+ the data buffer. This information is accessed by the hardware.
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AutoNeg
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AutoNeg
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@@ -96,9 +99,9 @@ AutoNeg
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Valid Range: 0x01-0x0F, 0x20-0x2F
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Valid Range: 0x01-0x0F, 0x20-0x2F
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Default Value: 0x2F
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Default Value: 0x2F
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-This parameter is a bit mask that specifies which speed and duplex
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-settings the board advertises. When this parameter is used, the Speed
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-and Duplex parameters must not be specified.
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+This parameter is a bit-mask that specifies the speed and duplex settings
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+advertised by the adapter. When this parameter is used, the Speed and
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+Duplex parameters must not be specified.
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NOTE: Refer to the Speed and Duplex section of this readme for more
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NOTE: Refer to the Speed and Duplex section of this readme for more
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information on the AutoNeg parameter.
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information on the AutoNeg parameter.
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@@ -110,14 +113,15 @@ Duplex
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Valid Range: 0-2 (0=auto-negotiate, 1=half, 2=full)
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Valid Range: 0-2 (0=auto-negotiate, 1=half, 2=full)
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Default Value: 0
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Default Value: 0
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-Defines the direction in which data is allowed to flow. Can be either
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-one or two-directional. If both Duplex and the link partner are set to
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-auto-negotiate, the board auto-detects the correct duplex. If the link
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-partner is forced (either full or half), Duplex defaults to half-duplex.
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+This defines the direction in which data is allowed to flow. Can be
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+either one or two-directional. If both Duplex and the link partner are
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+set to auto-negotiate, the board auto-detects the correct duplex. If the
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+link partner is forced (either full or half), Duplex defaults to half-
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+duplex.
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FlowControl
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FlowControl
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-----------
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+-----------
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Valid Range: 0-3 (0=none, 1=Rx only, 2=Tx only, 3=Rx&Tx)
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Valid Range: 0-3 (0=none, 1=Rx only, 2=Tx only, 3=Rx&Tx)
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Default Value: Reads flow control settings from the EEPROM
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Default Value: Reads flow control settings from the EEPROM
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@@ -127,57 +131,107 @@ to Ethernet PAUSE frames.
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InterruptThrottleRate
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InterruptThrottleRate
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---------------------
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---------------------
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-(not supported on Intel 82542, 82543 or 82544-based adapters)
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-Valid Range: 100-100000 (0=off, 1=dynamic)
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-Default Value: 8000
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-
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-This value represents the maximum number of interrupts per second the
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-controller generates. InterruptThrottleRate is another setting used in
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-interrupt moderation. Dynamic mode uses a heuristic algorithm to adjust
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-InterruptThrottleRate based on the current traffic load.
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+(not supported on Intel(R) 82542, 82543 or 82544-based adapters)
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+Valid Range: 0,1,3,100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
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+Default Value: 3
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+
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+The driver can limit the amount of interrupts per second that the adapter
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+will generate for incoming packets. It does this by writing a value to the
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+adapter that is based on the maximum amount of interrupts that the adapter
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+will generate per second.
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+
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+Setting InterruptThrottleRate to a value greater or equal to 100
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+will program the adapter to send out a maximum of that many interrupts
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+per second, even if more packets have come in. This reduces interrupt
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+load on the system and can lower CPU utilization under heavy load,
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+but will increase latency as packets are not processed as quickly.
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+
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+The default behaviour of the driver previously assumed a static
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+InterruptThrottleRate value of 8000, providing a good fallback value for
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+all traffic types,but lacking in small packet performance and latency.
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+The hardware can handle many more small packets per second however, and
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+for this reason an adaptive interrupt moderation algorithm was implemented.
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+
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+Since 7.3.x, the driver has two adaptive modes (setting 1 or 3) in which
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+it dynamically adjusts the InterruptThrottleRate value based on the traffic
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+that it receives. After determining the type of incoming traffic in the last
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+timeframe, it will adjust the InterruptThrottleRate to an appropriate value
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+for that traffic.
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+
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+The algorithm classifies the incoming traffic every interval into
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+classes. Once the class is determined, the InterruptThrottleRate value is
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+adjusted to suit that traffic type the best. There are three classes defined:
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+"Bulk traffic", for large amounts of packets of normal size; "Low latency",
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+for small amounts of traffic and/or a significant percentage of small
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+packets; and "Lowest latency", for almost completely small packets or
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+minimal traffic.
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+
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+In dynamic conservative mode, the InterruptThrottleRate value is set to 4000
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+for traffic that falls in class "Bulk traffic". If traffic falls in the "Low
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+latency" or "Lowest latency" class, the InterruptThrottleRate is increased
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+stepwise to 20000. This default mode is suitable for most applications.
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+
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+For situations where low latency is vital such as cluster or
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+grid computing, the algorithm can reduce latency even more when
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+InterruptThrottleRate is set to mode 1. In this mode, which operates
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+the same as mode 3, the InterruptThrottleRate will be increased stepwise to
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+70000 for traffic in class "Lowest latency".
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+
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+Setting InterruptThrottleRate to 0 turns off any interrupt moderation
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+and may improve small packet latency, but is generally not suitable
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+for bulk throughput traffic.
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NOTE: InterruptThrottleRate takes precedence over the TxAbsIntDelay and
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NOTE: InterruptThrottleRate takes precedence over the TxAbsIntDelay and
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- RxAbsIntDelay parameters. In other words, minimizing the receive
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+ RxAbsIntDelay parameters. In other words, minimizing the receive
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and/or transmit absolute delays does not force the controller to
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and/or transmit absolute delays does not force the controller to
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generate more interrupts than what the Interrupt Throttle Rate
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generate more interrupts than what the Interrupt Throttle Rate
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allows.
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allows.
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-CAUTION: If you are using the Intel PRO/1000 CT Network Connection
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+CAUTION: If you are using the Intel(R) PRO/1000 CT Network Connection
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(controller 82547), setting InterruptThrottleRate to a value
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(controller 82547), setting InterruptThrottleRate to a value
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greater than 75,000, may hang (stop transmitting) adapters
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greater than 75,000, may hang (stop transmitting) adapters
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- under certain network conditions. If this occurs a NETDEV
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- WATCHDOG message is logged in the system event log. In
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+ under certain network conditions. If this occurs a NETDEV
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+ WATCHDOG message is logged in the system event log. In
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addition, the controller is automatically reset, restoring
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addition, the controller is automatically reset, restoring
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- the network connection. To eliminate the potential for the
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+ the network connection. To eliminate the potential for the
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hang, ensure that InterruptThrottleRate is set no greater
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hang, ensure that InterruptThrottleRate is set no greater
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than 75,000 and is not set to 0.
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than 75,000 and is not set to 0.
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NOTE: When e1000 is loaded with default settings and multiple adapters
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NOTE: When e1000 is loaded with default settings and multiple adapters
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are in use simultaneously, the CPU utilization may increase non-
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are in use simultaneously, the CPU utilization may increase non-
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- linearly. In order to limit the CPU utilization without impacting
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+ linearly. In order to limit the CPU utilization without impacting
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the overall throughput, we recommend that you load the driver as
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the overall throughput, we recommend that you load the driver as
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follows:
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follows:
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- insmod e1000.o InterruptThrottleRate=3000,3000,3000
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+ modprobe e1000 InterruptThrottleRate=3000,3000,3000
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This sets the InterruptThrottleRate to 3000 interrupts/sec for
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This sets the InterruptThrottleRate to 3000 interrupts/sec for
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- the first, second, and third instances of the driver. The range
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+ the first, second, and third instances of the driver. The range
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of 2000 to 3000 interrupts per second works on a majority of
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of 2000 to 3000 interrupts per second works on a majority of
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systems and is a good starting point, but the optimal value will
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systems and is a good starting point, but the optimal value will
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- be platform-specific. If CPU utilization is not a concern, use
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+ be platform-specific. If CPU utilization is not a concern, use
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RX_POLLING (NAPI) and default driver settings.
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RX_POLLING (NAPI) and default driver settings.
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+
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RxDescriptors
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RxDescriptors
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-------------
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-------------
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Valid Range: 80-256 for 82542 and 82543-based adapters
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Valid Range: 80-256 for 82542 and 82543-based adapters
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80-4096 for all other supported adapters
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80-4096 for all other supported adapters
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Default Value: 256
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Default Value: 256
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-This value specifies the number of receive descriptors allocated by the
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-driver. Increasing this value allows the driver to buffer more incoming
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-packets. Each descriptor is 16 bytes. A receive buffer is also
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-allocated for each descriptor and is 2048.
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+This value specifies the number of receive buffer descriptors allocated
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+by the driver. Increasing this value allows the driver to buffer more
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+incoming packets, at the expense of increased system memory utilization.
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+
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+Each descriptor is 16 bytes. A receive buffer is also allocated for each
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+descriptor and can be either 2048, 4096, 8192, or 16384 bytes, depending
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+on the MTU setting. The maximum MTU size is 16110.
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+
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+NOTE: MTU designates the frame size. It only needs to be set for Jumbo
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+ Frames. Depending on the available system resources, the request
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+ for a higher number of receive descriptors may be denied. In this
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+ case, use a lower number.
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RxIntDelay
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RxIntDelay
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@@ -187,17 +241,17 @@ Default Value: 0
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This value delays the generation of receive interrupts in units of 1.024
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This value delays the generation of receive interrupts in units of 1.024
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microseconds. Receive interrupt reduction can improve CPU efficiency if
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microseconds. Receive interrupt reduction can improve CPU efficiency if
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-properly tuned for specific network traffic. Increasing this value adds
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+properly tuned for specific network traffic. Increasing this value adds
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extra latency to frame reception and can end up decreasing the throughput
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extra latency to frame reception and can end up decreasing the throughput
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-of TCP traffic. If the system is reporting dropped receives, this value
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+of TCP traffic. If the system is reporting dropped receives, this value
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may be set too high, causing the driver to run out of available receive
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may be set too high, causing the driver to run out of available receive
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descriptors.
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descriptors.
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CAUTION: When setting RxIntDelay to a value other than 0, adapters may
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CAUTION: When setting RxIntDelay to a value other than 0, adapters may
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- hang (stop transmitting) under certain network conditions. If
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+ hang (stop transmitting) under certain network conditions. If
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this occurs a NETDEV WATCHDOG message is logged in the system
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this occurs a NETDEV WATCHDOG message is logged in the system
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- event log. In addition, the controller is automatically reset,
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- restoring the network connection. To eliminate the potential
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+ event log. In addition, the controller is automatically reset,
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+ restoring the network connection. To eliminate the potential
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for the hang ensure that RxIntDelay is set to 0.
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for the hang ensure that RxIntDelay is set to 0.
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@@ -208,7 +262,7 @@ Valid Range: 0-65535 (0=off)
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Default Value: 128
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Default Value: 128
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This value, in units of 1.024 microseconds, limits the delay in which a
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This value, in units of 1.024 microseconds, limits the delay in which a
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-receive interrupt is generated. Useful only if RxIntDelay is non-zero,
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+receive interrupt is generated. Useful only if RxIntDelay is non-zero,
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this value ensures that an interrupt is generated after the initial
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this value ensures that an interrupt is generated after the initial
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packet is received within the set amount of time. Proper tuning,
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packet is received within the set amount of time. Proper tuning,
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along with RxIntDelay, may improve traffic throughput in specific network
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along with RxIntDelay, may improve traffic throughput in specific network
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@@ -222,9 +276,9 @@ Valid Settings: 0, 10, 100, 1000
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Default Value: 0 (auto-negotiate at all supported speeds)
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Default Value: 0 (auto-negotiate at all supported speeds)
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Speed forces the line speed to the specified value in megabits per second
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Speed forces the line speed to the specified value in megabits per second
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-(Mbps). If this parameter is not specified or is set to 0 and the link
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+(Mbps). If this parameter is not specified or is set to 0 and the link
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partner is set to auto-negotiate, the board will auto-detect the correct
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partner is set to auto-negotiate, the board will auto-detect the correct
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-speed. Duplex should also be set when Speed is set to either 10 or 100.
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+speed. Duplex should also be set when Speed is set to either 10 or 100.
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TxDescriptors
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TxDescriptors
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@@ -234,7 +288,7 @@ Valid Range: 80-256 for 82542 and 82543-based adapters
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Default Value: 256
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Default Value: 256
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This value is the number of transmit descriptors allocated by the driver.
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This value is the number of transmit descriptors allocated by the driver.
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-Increasing this value allows the driver to queue more transmits. Each
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+Increasing this value allows the driver to queue more transmits. Each
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descriptor is 16 bytes.
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descriptor is 16 bytes.
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NOTE: Depending on the available system resources, the request for a
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NOTE: Depending on the available system resources, the request for a
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@@ -248,8 +302,8 @@ Valid Range: 0-65535 (0=off)
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Default Value: 64
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Default Value: 64
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This value delays the generation of transmit interrupts in units of
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This value delays the generation of transmit interrupts in units of
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-1.024 microseconds. Transmit interrupt reduction can improve CPU
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-efficiency if properly tuned for specific network traffic. If the
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+1.024 microseconds. Transmit interrupt reduction can improve CPU
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+efficiency if properly tuned for specific network traffic. If the
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system is reporting dropped transmits, this value may be set too high
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system is reporting dropped transmits, this value may be set too high
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causing the driver to run out of available transmit descriptors.
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causing the driver to run out of available transmit descriptors.
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@@ -261,7 +315,7 @@ Valid Range: 0-65535 (0=off)
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Default Value: 64
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Default Value: 64
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This value, in units of 1.024 microseconds, limits the delay in which a
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This value, in units of 1.024 microseconds, limits the delay in which a
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-transmit interrupt is generated. Useful only if TxIntDelay is non-zero,
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+transmit interrupt is generated. Useful only if TxIntDelay is non-zero,
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this value ensures that an interrupt is generated after the initial
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this value ensures that an interrupt is generated after the initial
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packet is sent on the wire within the set amount of time. Proper tuning,
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packet is sent on the wire within the set amount of time. Proper tuning,
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along with TxIntDelay, may improve traffic throughput in specific
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along with TxIntDelay, may improve traffic throughput in specific
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@@ -288,15 +342,15 @@ fiber interface board only links at 1000 Mbps full-duplex.
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For copper-based boards, the keywords interact as follows:
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For copper-based boards, the keywords interact as follows:
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- The default operation is auto-negotiate. The board advertises all
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+ The default operation is auto-negotiate. The board advertises all
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supported speed and duplex combinations, and it links at the highest
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supported speed and duplex combinations, and it links at the highest
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common speed and duplex mode IF the link partner is set to auto-negotiate.
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common speed and duplex mode IF the link partner is set to auto-negotiate.
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If Speed = 1000, limited auto-negotiation is enabled and only 1000 Mbps
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If Speed = 1000, limited auto-negotiation is enabled and only 1000 Mbps
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is advertised (The 1000BaseT spec requires auto-negotiation.)
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is advertised (The 1000BaseT spec requires auto-negotiation.)
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- If Speed = 10 or 100, then both Speed and Duplex should be set. Auto-
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- negotiation is disabled, and the AutoNeg parameter is ignored. Partner
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+ If Speed = 10 or 100, then both Speed and Duplex should be set. Auto-
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+ negotiation is disabled, and the AutoNeg parameter is ignored. Partner
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SHOULD also be forced.
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SHOULD also be forced.
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The AutoNeg parameter is used when more control is required over the
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The AutoNeg parameter is used when more control is required over the
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@@ -304,7 +358,7 @@ auto-negotiation process. It should be used when you wish to control which
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speed and duplex combinations are advertised during the auto-negotiation
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speed and duplex combinations are advertised during the auto-negotiation
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process.
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process.
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-The parameter may be specified as either a decimal or hexidecimal value as
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+The parameter may be specified as either a decimal or hexadecimal value as
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determined by the bitmap below.
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determined by the bitmap below.
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Bit position 7 6 5 4 3 2 1 0
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Bit position 7 6 5 4 3 2 1 0
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@@ -337,20 +391,19 @@ Additional Configurations
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Configuring the Driver on Different Distributions
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Configuring the Driver on Different Distributions
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-------------------------------------------------
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-------------------------------------------------
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-
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Configuring a network driver to load properly when the system is started
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Configuring a network driver to load properly when the system is started
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- is distribution dependent. Typically, the configuration process involves
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+ is distribution dependent. Typically, the configuration process involves
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adding an alias line to /etc/modules.conf or /etc/modprobe.conf as well
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adding an alias line to /etc/modules.conf or /etc/modprobe.conf as well
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- as editing other system startup scripts and/or configuration files. Many
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+ as editing other system startup scripts and/or configuration files. Many
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popular Linux distributions ship with tools to make these changes for you.
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popular Linux distributions ship with tools to make these changes for you.
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To learn the proper way to configure a network device for your system,
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To learn the proper way to configure a network device for your system,
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- refer to your distribution documentation. If during this process you are
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+ refer to your distribution documentation. If during this process you are
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asked for the driver or module name, the name for the Linux Base Driver
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asked for the driver or module name, the name for the Linux Base Driver
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- for the Intel PRO/1000 Family of Adapters is e1000.
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+ for the Intel(R) PRO/1000 Family of Adapters is e1000.
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As an example, if you install the e1000 driver for two PRO/1000 adapters
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As an example, if you install the e1000 driver for two PRO/1000 adapters
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(eth0 and eth1) and set the speed and duplex to 10full and 100half, add
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(eth0 and eth1) and set the speed and duplex to 10full and 100half, add
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- the following to modules.conf or modprobe.conf:
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+ the following to modules.conf or or modprobe.conf:
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alias eth0 e1000
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alias eth0 e1000
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alias eth1 e1000
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alias eth1 e1000
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@@ -358,9 +411,8 @@ Additional Configurations
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Viewing Link Messages
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Viewing Link Messages
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---------------------
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---------------------
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-
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Link messages will not be displayed to the console if the distribution is
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Link messages will not be displayed to the console if the distribution is
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- restricting system messages. In order to see network driver link messages
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+ restricting system messages. In order to see network driver link messages
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on your console, set dmesg to eight by entering the following:
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on your console, set dmesg to eight by entering the following:
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dmesg -n 8
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dmesg -n 8
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@@ -369,11 +421,9 @@ Additional Configurations
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Jumbo Frames
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Jumbo Frames
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------------
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------------
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-
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- The driver supports Jumbo Frames for all adapters except 82542 and
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- 82573-based adapters. Jumbo Frames support is enabled by changing the
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- MTU to a value larger than the default of 1500. Use the ifconfig command
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- to increase the MTU size. For example:
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+ Jumbo Frames support is enabled by changing the MTU to a value larger than
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+ the default of 1500. Use the ifconfig command to increase the MTU size.
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+ For example:
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ifconfig eth<x> mtu 9000 up
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ifconfig eth<x> mtu 9000 up
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@@ -390,26 +440,49 @@ Additional Configurations
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- To enable Jumbo Frames, increase the MTU size on the interface beyond
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- To enable Jumbo Frames, increase the MTU size on the interface beyond
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1500.
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1500.
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- - The maximum MTU setting for Jumbo Frames is 16110. This value coincides
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+
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+ - The maximum MTU setting for Jumbo Frames is 16110. This value coincides
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with the maximum Jumbo Frames size of 16128.
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with the maximum Jumbo Frames size of 16128.
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+
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- Using Jumbo Frames at 10 or 100 Mbps may result in poor performance or
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- Using Jumbo Frames at 10 or 100 Mbps may result in poor performance or
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loss of link.
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loss of link.
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+
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- Some Intel gigabit adapters that support Jumbo Frames have a frame size
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- Some Intel gigabit adapters that support Jumbo Frames have a frame size
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limit of 9238 bytes, with a corresponding MTU size limit of 9216 bytes.
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limit of 9238 bytes, with a corresponding MTU size limit of 9216 bytes.
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- The adapters with this limitation are based on the Intel 82571EB and
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- 82572EI controllers, which correspond to these product names:
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- Intel® PRO/1000 PT Dual Port Server Adapter
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- Intel® PRO/1000 PF Dual Port Server Adapter
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- Intel® PRO/1000 PT Server Adapter
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- Intel® PRO/1000 PT Desktop Adapter
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- Intel® PRO/1000 PF Server Adapter
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-
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- - The Intel PRO/1000 PM Network Connection does not support jumbo frames.
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+ The adapters with this limitation are based on the Intel(R) 82571EB,
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+ 82572EI, 82573L and 80003ES2LAN controller. These correspond to the
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+ following product names:
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+ Intel(R) PRO/1000 PT Server Adapter
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+ Intel(R) PRO/1000 PT Desktop Adapter
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+ Intel(R) PRO/1000 PT Network Connection
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+ Intel(R) PRO/1000 PT Dual Port Server Adapter
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+ Intel(R) PRO/1000 PT Dual Port Network Connection
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+ Intel(R) PRO/1000 PF Server Adapter
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+ Intel(R) PRO/1000 PF Network Connection
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+ Intel(R) PRO/1000 PF Dual Port Server Adapter
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+ Intel(R) PRO/1000 PB Server Connection
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+ Intel(R) PRO/1000 PL Network Connection
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+ Intel(R) PRO/1000 EB Network Connection with I/O Acceleration
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+ Intel(R) PRO/1000 EB Backplane Connection with I/O Acceleration
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+ Intel(R) PRO/1000 PT Quad Port Server Adapter
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+
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+ - Adapters based on the Intel(R) 82542 and 82573V/E controller do not
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+ support Jumbo Frames. These correspond to the following product names:
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+ Intel(R) PRO/1000 Gigabit Server Adapter
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+ Intel(R) PRO/1000 PM Network Connection
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+
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+ - The following adapters do not support Jumbo Frames:
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+ Intel(R) 82562V 10/100 Network Connection
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+ Intel(R) 82566DM Gigabit Network Connection
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+ Intel(R) 82566DC Gigabit Network Connection
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+ Intel(R) 82566MM Gigabit Network Connection
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+ Intel(R) 82566MC Gigabit Network Connection
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+ Intel(R) 82562GT 10/100 Network Connection
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+ Intel(R) 82562G 10/100 Network Connection
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Ethtool
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Ethtool
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-------
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-------
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-
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The driver utilizes the ethtool interface for driver configuration and
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The driver utilizes the ethtool interface for driver configuration and
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diagnostics, as well as displaying statistical information. Ethtool
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diagnostics, as well as displaying statistical information. Ethtool
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version 1.6 or later is required for this functionality.
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version 1.6 or later is required for this functionality.
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@@ -417,15 +490,14 @@ Additional Configurations
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The latest release of ethtool can be found from
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The latest release of ethtool can be found from
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http://sourceforge.net/projects/gkernel.
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http://sourceforge.net/projects/gkernel.
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- NOTE: Ethtool 1.6 only supports a limited set of ethtool options. Support
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+ NOTE: Ethtool 1.6 only supports a limited set of ethtool options. Support
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for a more complete ethtool feature set can be enabled by upgrading
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for a more complete ethtool feature set can be enabled by upgrading
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ethtool to ethtool-1.8.1.
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ethtool to ethtool-1.8.1.
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Enabling Wake on LAN* (WoL)
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Enabling Wake on LAN* (WoL)
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---------------------------
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---------------------------
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-
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- WoL is configured through the Ethtool* utility. Ethtool is included with
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- all versions of Red Hat after Red Hat 7.2. For other Linux distributions,
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+ WoL is configured through the Ethtool* utility. Ethtool is included with
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+ all versions of Red Hat after Red Hat 7.2. For other Linux distributions,
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download and install Ethtool from the following website:
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download and install Ethtool from the following website:
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http://sourceforge.net/projects/gkernel.
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http://sourceforge.net/projects/gkernel.
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@@ -436,11 +508,17 @@ Additional Configurations
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For this driver version, in order to enable WoL, the e1000 driver must be
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For this driver version, in order to enable WoL, the e1000 driver must be
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loaded when shutting down or rebooting the system.
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loaded when shutting down or rebooting the system.
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+ Wake On LAN is only supported on port A for the following devices:
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+ Intel(R) PRO/1000 PT Dual Port Network Connection
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+ Intel(R) PRO/1000 PT Dual Port Server Connection
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+ Intel(R) PRO/1000 PT Dual Port Server Adapter
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+ Intel(R) PRO/1000 PF Dual Port Server Adapter
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+ Intel(R) PRO/1000 PT Quad Port Server Adapter
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+
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NAPI
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NAPI
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----
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----
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-
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- NAPI (Rx polling mode) is supported in the e1000 driver. NAPI is enabled
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- or disabled based on the configuration of the kernel. To override
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+ NAPI (Rx polling mode) is supported in the e1000 driver. NAPI is enabled
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+ or disabled based on the configuration of the kernel. To override
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the default, use the following compile-time flags.
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the default, use the following compile-time flags.
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To enable NAPI, compile the driver module, passing in a configuration option:
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To enable NAPI, compile the driver module, passing in a configuration option:
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@@ -457,88 +535,105 @@ Additional Configurations
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Known Issues
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Known Issues
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============
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============
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- Jumbo Frames System Requirement
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- -------------------------------
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-
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- Memory allocation failures have been observed on Linux systems with 64 MB
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- of RAM or less that are running Jumbo Frames. If you are using Jumbo
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- Frames, your system may require more than the advertised minimum
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- requirement of 64 MB of system memory.
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-
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- Performance Degradation with Jumbo Frames
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- -----------------------------------------
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-
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- Degradation in throughput performance may be observed in some Jumbo frames
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- environments. If this is observed, increasing the application's socket
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- buffer size and/or increasing the /proc/sys/net/ipv4/tcp_*mem entry values
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- may help. See the specific application manual and
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- /usr/src/linux*/Documentation/
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- networking/ip-sysctl.txt for more details.
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-
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- Jumbo frames on Foundry BigIron 8000 switch
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- -------------------------------------------
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- There is a known issue using Jumbo frames when connected to a Foundry
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- BigIron 8000 switch. This is a 3rd party limitation. If you experience
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- loss of packets, lower the MTU size.
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-
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- Multiple Interfaces on Same Ethernet Broadcast Network
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- ------------------------------------------------------
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-
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- Due to the default ARP behavior on Linux, it is not possible to have
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- one system on two IP networks in the same Ethernet broadcast domain
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- (non-partitioned switch) behave as expected. All Ethernet interfaces
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- will respond to IP traffic for any IP address assigned to the system.
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- This results in unbalanced receive traffic.
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-
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- If you have multiple interfaces in a server, either turn on ARP
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- filtering by entering:
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-
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- echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
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- (this only works if your kernel's version is higher than 2.4.5),
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-
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- NOTE: This setting is not saved across reboots. The configuration
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- change can be made permanent by adding the line:
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- net.ipv4.conf.all.arp_filter = 1
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- to the file /etc/sysctl.conf
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-
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- or,
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-
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- install the interfaces in separate broadcast domains (either in
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- different switches or in a switch partitioned to VLANs).
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-
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- 82541/82547 can't link or are slow to link with some link partners
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- -----------------------------------------------------------------
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-
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- There is a known compatibility issue with 82541/82547 and some
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- low-end switches where the link will not be established, or will
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- be slow to establish. In particular, these switches are known to
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- be incompatible with 82541/82547:
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-
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- Planex FXG-08TE
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- I-O Data ETG-SH8
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-
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- To workaround this issue, the driver can be compiled with an override
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- of the PHY's master/slave setting. Forcing master or forcing slave
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- mode will improve time-to-link.
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-
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- # make EXTRA_CFLAGS=-DE1000_MASTER_SLAVE=<n>
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-
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- Where <n> is:
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-
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- 0 = Hardware default
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- 1 = Master mode
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- 2 = Slave mode
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- 3 = Auto master/slave
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-
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- Disable rx flow control with ethtool
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- ------------------------------------
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-
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- In order to disable receive flow control using ethtool, you must turn
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- off auto-negotiation on the same command line.
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-
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- For example:
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-
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- ethtool -A eth? autoneg off rx off
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+Dropped Receive Packets on Half-duplex 10/100 Networks
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+------------------------------------------------------
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+If you have an Intel PCI Express adapter running at 10mbps or 100mbps, half-
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+duplex, you may observe occasional dropped receive packets. There are no
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+workarounds for this problem in this network configuration. The network must
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+be updated to operate in full-duplex, and/or 1000mbps only.
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+
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+Jumbo Frames System Requirement
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+-------------------------------
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+Memory allocation failures have been observed on Linux systems with 64 MB
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+of RAM or less that are running Jumbo Frames. If you are using Jumbo
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+Frames, your system may require more than the advertised minimum
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+requirement of 64 MB of system memory.
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+
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+Performance Degradation with Jumbo Frames
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+-----------------------------------------
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+Degradation in throughput performance may be observed in some Jumbo frames
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+environments. If this is observed, increasing the application's socket
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+buffer size and/or increasing the /proc/sys/net/ipv4/tcp_*mem entry values
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+may help. See the specific application manual and
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+/usr/src/linux*/Documentation/
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+networking/ip-sysctl.txt for more details.
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+
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+Jumbo Frames on Foundry BigIron 8000 switch
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+-------------------------------------------
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+There is a known issue using Jumbo frames when connected to a Foundry
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+BigIron 8000 switch. This is a 3rd party limitation. If you experience
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+loss of packets, lower the MTU size.
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+
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+Allocating Rx Buffers when Using Jumbo Frames
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+---------------------------------------------
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+Allocating Rx buffers when using Jumbo Frames on 2.6.x kernels may fail if
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+the available memory is heavily fragmented. This issue may be seen with PCI-X
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+adapters or with packet split disabled. This can be reduced or eliminated
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+by changing the amount of available memory for receive buffer allocation, by
|
|
|
|
+increasing /proc/sys/vm/min_free_kbytes.
|
|
|
|
+
|
|
|
|
+Multiple Interfaces on Same Ethernet Broadcast Network
|
|
|
|
+------------------------------------------------------
|
|
|
|
+Due to the default ARP behavior on Linux, it is not possible to have
|
|
|
|
+one system on two IP networks in the same Ethernet broadcast domain
|
|
|
|
+(non-partitioned switch) behave as expected. All Ethernet interfaces
|
|
|
|
+will respond to IP traffic for any IP address assigned to the system.
|
|
|
|
+This results in unbalanced receive traffic.
|
|
|
|
+
|
|
|
|
+If you have multiple interfaces in a server, either turn on ARP
|
|
|
|
+filtering by entering:
|
|
|
|
+
|
|
|
|
+ echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
|
|
|
|
+(this only works if your kernel's version is higher than 2.4.5),
|
|
|
|
+
|
|
|
|
+NOTE: This setting is not saved across reboots. The configuration
|
|
|
|
+change can be made permanent by adding the line:
|
|
|
|
+ net.ipv4.conf.all.arp_filter = 1
|
|
|
|
+to the file /etc/sysctl.conf
|
|
|
|
+
|
|
|
|
+ or,
|
|
|
|
+
|
|
|
|
+install the interfaces in separate broadcast domains (either in
|
|
|
|
+different switches or in a switch partitioned to VLANs).
|
|
|
|
+
|
|
|
|
+82541/82547 can't link or are slow to link with some link partners
|
|
|
|
+-----------------------------------------------------------------
|
|
|
|
+There is a known compatibility issue with 82541/82547 and some
|
|
|
|
+low-end switches where the link will not be established, or will
|
|
|
|
+be slow to establish. In particular, these switches are known to
|
|
|
|
+be incompatible with 82541/82547:
|
|
|
|
+
|
|
|
|
+ Planex FXG-08TE
|
|
|
|
+ I-O Data ETG-SH8
|
|
|
|
+
|
|
|
|
+To workaround this issue, the driver can be compiled with an override
|
|
|
|
+of the PHY's master/slave setting. Forcing master or forcing slave
|
|
|
|
+mode will improve time-to-link.
|
|
|
|
+
|
|
|
|
+ # make CFLAGS_EXTRA=-DE1000_MASTER_SLAVE=<n>
|
|
|
|
+
|
|
|
|
+Where <n> is:
|
|
|
|
+
|
|
|
|
+ 0 = Hardware default
|
|
|
|
+ 1 = Master mode
|
|
|
|
+ 2 = Slave mode
|
|
|
|
+ 3 = Auto master/slave
|
|
|
|
+
|
|
|
|
+Disable rx flow control with ethtool
|
|
|
|
+------------------------------------
|
|
|
|
+In order to disable receive flow control using ethtool, you must turn
|
|
|
|
+off auto-negotiation on the same command line.
|
|
|
|
+
|
|
|
|
+For example:
|
|
|
|
+
|
|
|
|
+ ethtool -A eth? autoneg off rx off
|
|
|
|
+
|
|
|
|
+Unplugging network cable while ethtool -p is running
|
|
|
|
+----------------------------------------------------
|
|
|
|
+In kernel versions 2.5.50 and later (including 2.6 kernel), unplugging
|
|
|
|
+the network cable while ethtool -p is running will cause the system to
|
|
|
|
+become unresponsive to keyboard commands, except for control-alt-delete.
|
|
|
|
+Restarting the system appears to be the only remedy.
|
|
|
|
|
|
|
|
|
|
Support
|
|
Support
|
|
@@ -548,24 +643,10 @@ For general information, go to the Intel support website at:
|
|
|
|
|
|
http://support.intel.com
|
|
http://support.intel.com
|
|
|
|
|
|
- or the Intel Wired Networking project hosted by Sourceforge at:
|
|
|
|
|
|
+or the Intel Wired Networking project hosted by Sourceforge at:
|
|
|
|
|
|
http://sourceforge.net/projects/e1000
|
|
http://sourceforge.net/projects/e1000
|
|
|
|
|
|
If an issue is identified with the released source code on the supported
|
|
If an issue is identified with the released source code on the supported
|
|
kernel with a supported adapter, email the specific information related
|
|
kernel with a supported adapter, email the specific information related
|
|
-to the issue to e1000-devel@lists.sourceforge.net
|
|
|
|
-
|
|
|
|
-
|
|
|
|
-License
|
|
|
|
-=======
|
|
|
|
-
|
|
|
|
-This software program is released under the terms of a license agreement
|
|
|
|
-between you ('Licensee') and Intel. Do not use or load this software or any
|
|
|
|
-associated materials (collectively, the 'Software') until you have carefully
|
|
|
|
-read the full terms and conditions of the file COPYING located in this software
|
|
|
|
-package. By loading or using the Software, you agree to the terms of this
|
|
|
|
-Agreement. If you do not agree with the terms of this Agreement, do not
|
|
|
|
-install or use the Software.
|
|
|
|
-
|
|
|
|
-* Other names and brands may be claimed as the property of others.
|
|
|
|
|
|
+to the issue to e1000-devel@lists.sf.net
|