diff options
Diffstat (limited to 'man/man4/sk98lin.4')
| -rw-r--r-- | man/man4/sk98lin.4 | 580 |
1 files changed, 580 insertions, 0 deletions
diff --git a/man/man4/sk98lin.4 b/man/man4/sk98lin.4 new file mode 100644 index 0000000..69b9612 --- /dev/null +++ b/man/man4/sk98lin.4 @@ -0,0 +1,580 @@ +'\" t +.\" (C)Copyright 1999-2003 Marvell(R) -- linux@syskonnect.de +.\" sk98lin.4 1.1 2003/12/17 10:03:18 +.\" +.\" SPDX-License-Identifier: GPL-2.0-or-later +.\" +.\" This manpage can be viewed using `groff -Tascii -man sk98lin.4 | less` +.\" +.TH sk98lin 4 2024-05-02 "Linux man-pages (unreleased)" +.SH NAME +sk98lin \- Marvell/SysKonnect Gigabit Ethernet driver v6.21 +.SH SYNOPSIS +.B insmod sk98lin.o +.RB [ Speed_A=\c +.IR i,j,... ] +.RB [ Speed_B=\c +.IR i,j,... ] +.RB [ AutoNeg_A=\c +.IR i,j,... ] +.RB [ AutoNeg_B=\c +.IR i,j,... ] +.RB [ DupCap_A=\c +.IR i,j,... ] +.RB [ DupCap_B=\c +.IR i,j,... ] +.RB [ FlowCtrl_A=\c +.IR i,j,... ] +.RB [ FlowCtrl_B=\c +.IR i,j,... ] +.RB [ Role_A=\c +.IR i,j,... ] +.RB [ Role_B=\c +.IR i,j,... ] +.RB [ ConType=\c +.IR i,j,... ] +.RB [ Moderation=\c +.IR i,j,... ] +.RB [ IntsPerSec=\c +.IR i,j,... ] +.RB [ PrefPort=\c +.IR i,j,... ] +.RB [ RlmtMode=\c +.IR i,j,... ] +.SH DESCRIPTION +.ad l +.hy 0 +.BR Note : +This obsolete driver was removed in Linux 2.6.26. +.P +.B sk98lin +is the Gigabit Ethernet driver for +Marvell and SysKonnect network adapter cards. +It supports SysKonnect SK-98xx/SK-95xx +compliant Gigabit Ethernet Adapter and +any Yukon compliant chipset. +.P +When loading the driver using insmod, +parameters for the network adapter cards +might be stated as a sequence of comma separated commands. +If for instance two network adapters are installed and AutoNegotiation on +Port A of the first adapter should be ON, +but on the Port A of the second adapter switched OFF, one must enter: +.P +.in +4n +.EX +insmod sk98lin.o AutoNeg_A=On,Off +.EE +.in +.P +After +.B sk98lin +is bound to one or more adapter cards and the +.I /proc +filesystem is mounted on your system, a dedicated statistics file +will be created in the folder +.I /proc/net/sk98lin +for all ports of the installed network adapter cards. +Those files are named +.IR eth[x] , +where +.I x +is the number of the interface that has been assigned to a +dedicated port by the system. +.P +If loading is finished, any desired IP address can be +assigned to the respective +.I eth[x] +interface using the +.BR ifconfig (8) +command. +This causes the adapter to connect to the Ethernet and to display a status +message on the console saying "ethx: network connection up using port y" +followed by the configured or detected connection parameters. +.P +The +.B sk98lin +also supports large frames (also called jumbo frames). +Using jumbo frames can improve throughput tremendously when +transferring large amounts of data. +To enable large frames, the MTU (maximum transfer unit) size +for an interface is to be set to a high value. +The default MTU size is 1500 and can be changed up to 9000 (bytes). +Setting the MTU size can be done when assigning the IP address +to the interface or later by using the +.BR ifconfig (8) +command with the mtu parameter. +If for instance eth0 needs an IP +address and a large frame MTU size, +the following two commands might be used: +.P +.in +4n +.EX +ifconfig eth0 10.1.1.1 +ifconfig eth0 mtu 9000 +.EE +.in +.P +Those two commands might even be combined into one: +.P +.in +4n +.EX +ifconfig eth0 10.1.1.1 mtu 9000 +.EE +.in +.P +Note that large frames can be used only if permitted by +your network infrastructure. +This means, that any switch being used in your Ethernet must +also support large frames. +Quite some switches support large frames, +but need to be configured to do so. +Most of the times, their default setting is to support only +standard frames with an MTU size of 1500 (bytes). +In addition to the switches inside the network, +all network adapters that are to be used must also be +enabled regarding jumbo frames. +If an adapter is not set to receive large frames, it will simply drop them. +.P +Switching back to the standard Ethernet frame size can be done by using the +.BR ifconfig (8) +command again: +.P +.in +4n +.EX +ifconfig eth0 mtu 1500 +.EE +.in +.P +The Marvell/SysKonnect Gigabit Ethernet driver for Linux is able to +support VLAN and Link Aggregation according to +IEEE standards 802.1, 802.1q, and 802.3ad. +Those features are available only after installation of open source modules +which can be found on the Internet: +.P +.IR VLAN : +.UR http://www.candelatech.com\:/\[ti]greear\:/vlan.html +.UE +.br +.I Link +.IR Aggregation : +.UR http://www.st.rim.or.jp\:/\[ti]yumo +.UE +.P +Note that Marvell/SysKonnect does not offer any support for these +open source modules and does not take the responsibility for any +kind of failures or problems arising when using these modules. +.SS Parameters +.TP +.BI Speed_A= i,j,... +This parameter is used to set the speed capabilities of port A of an +adapter card. +It is valid only for Yukon copper adapters. +Possible values are: +.IR 10 , +.IR 100 , +.IR 1000 , +or +.IR Auto ; +.I Auto +is the default. +Usually, the speed is negotiated between the two ports +during link establishment. +If this fails, +a port can be forced to a specific setting with this parameter. +.TP +.BI Speed_B= i,j,... +This parameter is used to set the speed capabilities of port B of +an adapter card. +It is valid only for Yukon copper adapters. +Possible values are: +.IR 10 , +.IR 100 , +.IR 1000 , +or +.IR Auto ; +.I Auto +is the default. +Usually, the speed is negotiated between the two ports during link +establishment. +If this fails, +a port can be forced to a specific setting with this parameter. +.TP +.BI AutoNeg_A= i,j,... +Enables or disables the use of autonegotiation of port A of an adapter card. +Possible values are: +.IR On , +.IR Off , +or +.IR Sense ; +.I On +is the default. +The +.I Sense +mode automatically detects whether the link partner supports +auto-negotiation or not. +.TP +.BI AutoNeg_B= i,j,... +Enables or disables the use of autonegotiation of port B of an adapter card. +Possible values are: +.IR On , +.IR Off , +or +.IR Sense ; +.I On +is the default. +The +.I Sense +mode automatically detects whether the link partner supports +auto-negotiation or not. +.TP +.BI DupCap_A= i,j,... +This parameter indicates the duplex mode to be used for port A +of an adapter card. +Possible values are: +.IR Half , +.IR Full , +or +.IR Both ; +.I Both +is the default. +This parameter is relevant only if AutoNeg_A of port A is not set to +.IR Sense . +If AutoNeg_A is set to +.IR On , +all three values of DupCap_A ( +.IR Half , +.IR Full , +or +.IR Both ) +might be stated. +If AutoNeg_A is set to +.IR Off , +only DupCap_A values +.I Full +and +.I Half +are allowed. +This DupCap_A parameter is useful if your link partner does not +support all possible duplex combinations. +.TP +.BI DupCap_B= i,j,... +This parameter indicates the duplex mode to be used for port B +of an adapter card. +Possible values are: +.IR Half , +.IR Full , +or +.IR Both ; +.I Both +is the default. +This parameter is relevant only if AutoNeg_B of port B is not set to +.IR Sense . +If AutoNeg_B is set to +.IR On , +all three values of DupCap_B ( +.IR Half , +.IR Full , +or +.IR Both ) +might be stated. +If AutoNeg_B is set to +.IR Off , +only DupCap_B values +.I Full +and +.I Half +are allowed. +This DupCap_B parameter is useful if your link partner does not +support all possible duplex combinations. +.TP +.BI FlowCtrl_A= i,j,... +This parameter can be used to set the flow control capabilities the +port reports during auto-negotiation. +Possible values are: +.IR Sym , +.IR SymOrRem , +.IR LocSend , +or +.IR None ; +.I SymOrRem +is the default. +The different modes have the following meaning: +.RS +.TP +.IR Sym " = Symmetric" +Both link partners are allowed to send PAUSE frames. +.TP +.IR SymOrRem " = SymmetricOrRemote" +Both or only remote partner are allowed to send PAUSE frames. +.TP +.IR LocSend " = LocalSend" +Only local link partner is allowed to send PAUSE frames. +.TP +.IR None " = None" +No link partner is allowed to send PAUSE frames. +.RE +.IP +Note that this parameter is ignored if AutoNeg_A is set to +.IR Off . +.TP +.BI FlowCtrl_B= i,j,... +This parameter can be used to set the flow control capabilities the +port reports during auto-negotiation. +Possible values are: +.IR Sym , +.IR SymOrRem , +.IR LocSend , +or +.IR None ; +.I SymOrRem +is the default. +The different modes have the following meaning: +.RS +.TP +.IR Sym " = Symmetric" +Both link partners are allowed to send PAUSE frames. +.TP +.IR SymOrRem " = SymmetricOrRemote" +Both or only remote partner are allowed to send PAUSE frames. +.TP +.IR LocSend " = LocalSend" +Only local link partner is allowed to send PAUSE frames. +.TP +.IR None " = None" +No link partner is allowed to send PAUSE frames. +.RE +.IP +Note that this parameter is ignored if AutoNeg_B is set to +.IR Off . +.TP +.BI Role_A= i,j,... +This parameter is valid only for 1000Base-T adapter cards. +For two 1000Base-T ports to communicate, +one must take the role of the master (providing timing information), +while the other must be the slave. +Possible values are: +.IR Auto , +.IR Master , +or +.IR Slave ; +.I Auto +is the default. +Usually, the role of a port is negotiated between two ports during +link establishment, but if that fails the port A of an adapter card +can be forced to a specific setting with this parameter. +.TP +.BI Role_B= i,j,... +This parameter is valid only for 1000Base-T adapter cards. +For two 1000Base-T ports to communicate, one must take +the role of the master (providing timing information), +while the other must be the slave. +Possible values are: +.IR Auto , +.IR Master , +or +.IR Slave ; +.I Auto +is the default. +Usually, the role of a port is negotiated between +two ports during link establishment, but if that fails +the port B of an adapter card can be forced to a +specific setting with this parameter. +.TP +.BI ConType= i,j,... +This parameter is a combination of all five per-port parameters +within one single parameter. +This simplifies the configuration of both ports of an adapter card. +The different values of this variable reflect the +most meaningful combinations of port parameters. +Possible values and their corresponding combination of per-port parameters: +.IP +.TS +lb lb lb lb lb lb +l l l l l l. +ConType DupCap AutoNeg FlowCtrl Role Speed +\fIAuto\fP Both On SymOrRem Auto Auto +\fI100FD\fP Full Off None Auto 100 +\fI100HD\fP Half Off None Auto 100 +\fI10FD\fP Full Off None Auto 10 +\fI10HD\fP Half Off None Auto 10 +.TE +.IP +Stating any other port parameter together with this +.I ConType +parameter will result in a merged configuration of those settings. +This is due to +the fact, that the per-port parameters (e.g., +.IR Speed_A ) +have a higher priority than the combined variable +.IR ConType . +.TP +.BI Moderation= i,j,... +Interrupt moderation is employed to limit the maximum number of interrupts +the driver has to serve. +That is, one or more interrupts (which indicate any transmit or +receive packet to be processed) are queued until the driver processes them. +When queued interrupts are to be served, is determined by the +.I IntsPerSec +parameter, which is explained later below. +Possible moderation modes are: +.IR None , +.IR Static , +or +.IR Dynamic ; +.I None +is the default. +The different modes have the following meaning: +.IP +.I None +No interrupt moderation is applied on the adapter card. +Therefore, each transmit or receive interrupt is served immediately +as soon as it appears on the interrupt line of the adapter card. +.IP +.I Static +Interrupt moderation is applied on the adapter card. +All transmit and receive interrupts are queued until +a complete moderation interval ends. +If such a moderation interval ends, all queued interrupts +are processed in one big bunch without any delay. +The term +.I Static +reflects the fact, that interrupt moderation is always enabled, +regardless how much network load is currently passing via a +particular interface. +In addition, the duration of the moderation interval has a fixed +length that never changes while the driver is operational. +.IP +.I Dynamic +Interrupt moderation might be applied on the adapter card, +depending on the load of the system. +If the driver detects that the system load is too high, +the driver tries to shield the system against too much network +load by enabling interrupt moderation. +If\[em]at a later time\[em]the CPU utilization decreases +again (or if the network load is negligible), the interrupt +moderation will automatically be disabled. +.IP +Interrupt moderation should be used when the driver has to +handle one or more interfaces with a high network load, +which\[em]as a consequence\[em]leads also to a high CPU utilization. +When moderation is applied in such high network load situations, +CPU load might be reduced by 20\[en]30% on slow computers. +.IP +Note that the drawback of using interrupt moderation is an increase of +the round-trip-time (RTT), due to the queuing and serving of +interrupts at dedicated moderation times. +.TP +.BI IntsPerSec= i,j,... +This parameter determines the length of any interrupt moderation interval. +Assuming that static interrupt moderation is to be used, an +.I IntsPerSec +parameter value of 2000 will lead to an interrupt moderation interval of +500 microseconds. +Possible values for this parameter are in the range of +30...40000 (interrupts per second). +The default value is 2000. +.IP +This parameter is used only if either static or dynamic interrupt moderation +is enabled on a network adapter card. +This parameter is ignored if no moderation is applied. +.IP +Note that the duration of the moderation interval is to be chosen with care. +At first glance, selecting a very long duration (e.g., only 100 interrupts per +second) seems to be meaningful, but the increase of packet-processing delay +is tremendous. +On the other hand, selecting a very short moderation time might +compensate the use of any moderation being applied. +.TP +.BI PrefPort= i,j,... +This parameter is used to force the preferred port to +A or B (on dual-port network adapters). +The preferred port is the one that is used if both ports A and B are +detected as fully functional. +Possible values are: +.I A +or +.IR B ; +.I A +is the default. +.TP +.BI RlmtMode= i,j,... +RLMT monitors the status of the port. +If the link of the active port fails, +RLMT switches immediately to the standby link. +The virtual link is maintained as long as at least one "physical" link is up. +This parameters states how RLMT should monitor both ports. +Possible values are: +.IR CheckLinkState , +.IR CheckLocalPort , +.IR CheckSeg , +or +.IR DualNet ; +.I CheckLinkState +is the default. +The different modes have the following meaning: +.IP +.I CheckLinkState +Check link state only: RLMT uses the link state reported by the adapter +hardware for each individual port to determine whether a port can be used +for all network traffic or not. +.IP +.I CheckLocalPort +In this mode, RLMT monitors the network path between the two +ports of an adapter by regularly exchanging packets between them. +This mode requires a network configuration in which the +two ports are able to "see" each other (i.e., there +must not be any router between the ports). +.IP +.I CheckSeg +Check local port and segmentation: +This mode supports the same functions as the CheckLocalPort +mode and additionally checks network segmentation between the ports. +Therefore, this mode is to be used only if Gigabit Ethernet +switches are installed on the network that have been +configured to use the Spanning Tree protocol. +.IP +.I DualNet +In this mode, ports A and B are used as separate devices. +If you have a dual port adapter, port A will be configured as +.I eth[x] +and port B as +.IR eth[x+1] . +Both ports can be used independently with distinct IP addresses. +The preferred port setting is not used. +RLMT is turned off. +.IP +Note that RLMT modes +.I CheckLocalPort +and +.I CheckLinkState +are designed to operate in configurations where a +network path between the ports on one adapter exists. +Moreover, they are not designed to work where adapters are +connected back-to-back. +.SH FILES +.TP +.I /proc/net/sk98lin/eth[x] +The statistics file of a particular interface of an adapter card. +It contains generic information about the adapter card plus a detailed +summary of all transmit and receive counters. +.TP +.I /usr/src/linux/Documentation/networking/sk98lin.txt +This is the +.I README +file of the +.I sk98lin +driver. +It contains a detailed installation HOWTO and describes all parameters +of the driver. +It denotes also common problems and provides the solution to them. +.SH BUGS +Report any bugs to linux@syskonnect.de +.\" .SH AUTHORS +.\" Ralph Roesler \[em] rroesler@syskonnect.de +.\" .br +.\" Mirko Lindner \[em] mlindner@syskonnect.de +.SH SEE ALSO +.BR ifconfig (8), +.BR insmod (8), +.BR modprobe (8) |