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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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This commit is contained in:
David S. Miller
2012-04-10 14:30:45 -04:00
父節點 32ed53b83e f68e556e23
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共有 4047 個文件被更改，包括 104278 次插入 和 50193 次删除
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2
Documentation/networking/baycom.txt
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@@ -93,7 +93,7 @@ Every time a driver is inserted into the kernel, it has to know which
modems it should access at which ports. This can be done with the setbaycom
utility. If you are only using one modem, you can also configure the
driver from the insmod command line (or by means of an option line in
/etc/modprobe.conf).
/etc/modprobe.d/*.conf).
Examples:
modprobe baycom_ser_fdx mode="ser12*" iobase=0x3f8 irq=4

46
Documentation/networking/bonding.txt
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@@ -173,9 +173,8 @@ bonding module at load time, or are specified via sysfs.
Module options may be given as command line arguments to the
insmod or modprobe command, but are usually specified in either the
/etc/modules.conf or /etc/modprobe.conf configuration file, or in a
distro-specific configuration file (some of which are detailed in the next
section).
/etc/modrobe.d/*.conf configuration files, or in a distro-specific
configuration file (some of which are detailed in the next section).
Details on bonding support for sysfs is provided in the
"Configuring Bonding Manually via Sysfs" section, below.
@@ -1021,7 +1020,7 @@ ifcfg-bondX files.
Because the sysconfig scripts supply the bonding module
options in the ifcfg-bondX file, it is not necessary to add them to
the system /etc/modules.conf or /etc/modprobe.conf configuration file.
the system /etc/modules.d/*.conf configuration files.
3.2 Configuration with Initscripts Support
------------------------------------------
@@ -1098,15 +1097,13 @@ queried targets, e.g.,
arp_ip_target=+192.168.1.1 arp_ip_target=+192.168.1.2
is the proper syntax to specify multiple targets. When specifying
options via BONDING_OPTS, it is not necessary to edit /etc/modules.conf or
/etc/modprobe.conf.
options via BONDING_OPTS, it is not necessary to edit /etc/modprobe.d/*.conf.
For even older versions of initscripts that do not support
BONDING_OPTS, it is necessary to edit /etc/modules.conf (or
/etc/modprobe.conf, depending upon your distro) to load the bonding module
with your desired options when the bond0 interface is brought up. The
following lines in /etc/modules.conf (or modprobe.conf) will load the
bonding module, and select its options:
BONDING_OPTS, it is necessary to edit /etc/modprobe.d/*.conf, depending upon
your distro) to load the bonding module with your desired options when the
bond0 interface is brought up. The following lines in /etc/modprobe.d/*.conf
will load the bonding module, and select its options:
alias bond0 bonding
options bond0 mode=balance-alb miimon=100
@@ -1152,7 +1149,7 @@ knowledge of bonding. One such distro is SuSE Linux Enterprise Server
version 8.
The general method for these systems is to place the bonding
module parameters into /etc/modules.conf or /etc/modprobe.conf (as
module parameters into a config file in /etc/modprobe.d/ (as
appropriate for the installed distro), then add modprobe and/or
ifenslave commands to the system's global init script. The name of
the global init script differs; for sysconfig, it is
@@ -1228,7 +1225,7 @@ network initialization scripts.
specify a different name for each instance (the module loading system
requires that every loaded module, even multiple instances of the same
module, have a unique name). This is accomplished by supplying multiple
sets of bonding options in /etc/modprobe.conf, for example:
sets of bonding options in /etc/modprobe.d/*.conf, for example:
alias bond0 bonding
options bond0 -o bond0 mode=balance-rr miimon=100
@@ -1793,8 +1790,8 @@ route additions may cause trouble.
On systems with network configuration scripts that do not
associate physical devices directly with network interface names (so
that the same physical device always has the same "ethX" name), it may
be necessary to add some special logic to either /etc/modules.conf or
/etc/modprobe.conf (depending upon which is installed on the system).
be necessary to add some special logic to config files in
/etc/modprobe.d/.
For example, given a modules.conf containing the following:
@@ -1821,20 +1818,15 @@ add above bonding e1000 tg3
bonding is loaded. This command is fully documented in the
modules.conf manual page.
On systems utilizing modprobe.conf (or modprobe.conf.local),
an equivalent problem can occur. In this case, the following can be
added to modprobe.conf (or modprobe.conf.local, as appropriate), as
follows (all on one line; it has been split here for clarity):
On systems utilizing modprobe an equivalent problem can occur.
In this case, the following can be added to config files in
/etc/modprobe.d/ as:
install bonding /sbin/modprobe tg3; /sbin/modprobe e1000;
/sbin/modprobe --ignore-install bonding
softdep bonding pre: tg3 e1000
This will, when loading the bonding module, rather than
performing the normal action, instead execute the provided command.
This command loads the device drivers in the order needed, then calls
modprobe with --ignore-install to cause the normal action to then take
place. Full documentation on this can be found in the modprobe.conf
and modprobe manual pages.
This will load tg3 and e1000 modules before loading the bonding one.
Full documentation on this can be found in the modprobe.d and modprobe
manual pages.
8.3. Painfully Slow Or No Failed Link Detection By Miimon
---------------------------------------------------------

11
Documentation/networking/dl2k.txt
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@@ -45,12 +45,13 @@ Now eth0 should active, you can test it by "ping" or get more information by
"ifconfig". If tested ok, continue the next step.
4. cp dl2k.ko /lib/modules/`uname -r`/kernel/drivers/net
5. Add the following line to /etc/modprobe.conf:
5. Add the following line to /etc/modprobe.d/dl2k.conf:
alias eth0 dl2k
6. Run "netconfig" or "netconf" to create configuration script ifcfg-eth0
6. Run depmod to updated module indexes.
7. Run "netconfig" or "netconf" to create configuration script ifcfg-eth0
located at /etc/sysconfig/network-scripts or create it manually.
[see - Configuration Script Sample]
7. Driver will automatically load and configure at next boot time.
8. Driver will automatically load and configure at next boot time.
Compiling the Driver
====================
@@ -154,8 +155,8 @@ Installing the Driver
-----------------
1. Copy dl2k.o to the network modules directory, typically
/lib/modules/2.x.x-xx/net or /lib/modules/2.x.x/kernel/drivers/net.
2. Locate the boot module configuration file, most commonly modprobe.conf
or modules.conf (for 2.4) in the /etc directory. Add the following lines:
2. Locate the boot module configuration file, most commonly in the
/etc/modprobe.d/ directory. Add the following lines:
alias ethx dl2k
options dl2k <optional parameters>

31
Documentation/networking/driver.txt
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@@ -2,16 +2,16 @@ Document about softnet driver issues
Transmit path guidelines:
1) The hard_start_xmit method must never return '1' under any
normal circumstances. It is considered a hard error unless
1) The ndo_start_xmit method must not return NETDEV_TX_BUSY under
any normal circumstances. It is considered a hard error unless
there is no way your device can tell ahead of time when it's
transmit function will become busy.
Instead it must maintain the queue properly. For example,
for a driver implementing scatter-gather this means:
static int drv_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev)
static netdev_tx_t drv_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct drv *dp = netdev_priv(dev);
@@ -23,7 +23,7 @@ Transmit path guidelines:
unlock_tx(dp);
printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
dev->name);
return 1;
return NETDEV_TX_BUSY;
}
... queue packet to card ...
@@ -35,6 +35,7 @@ Transmit path guidelines:
...
unlock_tx(dp);
...
return NETDEV_TX_OK;
}
And then at the end of your TX reclamation event handling:
@@ -58,15 +59,12 @@ Transmit path guidelines:
TX_BUFFS_AVAIL(dp) > 0)
netif_wake_queue(dp->dev);
2) Do not forget to update netdev->trans_start to jiffies after
each new tx packet is given to the hardware.
3) A hard_start_xmit method must not modify the shared parts of a
2) An ndo_start_xmit method must not modify the shared parts of a
cloned SKB.
4) Do not forget that once you return 0 from your hard_start_xmit
method, it is your driver's responsibility to free up the SKB
and in some finite amount of time.
3) Do not forget that once you return NETDEV_TX_OK from your
ndo_start_xmit method, it is your driver's responsibility to free
up the SKB and in some finite amount of time.
For example, this means that it is not allowed for your TX
mitigation scheme to let TX packets "hang out" in the TX
@@ -74,8 +72,9 @@ Transmit path guidelines:
This error can deadlock sockets waiting for send buffer room
to be freed up.
If you return 1 from the hard_start_xmit method, you must not keep
any reference to that SKB and you must not attempt to free it up.
If you return NETDEV_TX_BUSY from the ndo_start_xmit method, you
must not keep any reference to that SKB and you must not attempt
to free it up.
Probing guidelines:
@@ -85,10 +84,10 @@ Probing guidelines:
Close/stop guidelines:
1) After the dev->stop routine has been called, the hardware must
1) After the ndo_stop routine has been called, the hardware must
not receive or transmit any data. All in flight packets must
be aborted. If necessary, poll or wait for completion of
any reset commands.
2) The dev->stop routine will be called by unregister_netdevice
2) The ndo_stop routine will be called by unregister_netdevice
if device is still UP.

6
Documentation/networking/e100.txt
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@@ -94,8 +94,8 @@ Additional Configurations
Configuring a network driver to load properly when the system is started is
distribution dependent. Typically, the configuration process involves adding
an alias line to /etc/modules.conf or /etc/modprobe.conf as well as editing
other system startup scripts and/or configuration files. Many popular Linux
an alias line to /etc/modprobe.d/*.conf as well as editing other system
startup scripts and/or configuration files. Many popular Linux
distributions ship with tools to make these changes for you. To learn the
proper way to configure a network device for your system, refer to your
distribution documentation. If during this process you are asked for the
@@ -103,7 +103,7 @@ Additional Configurations
PRO/100 Family of Adapters is e100.
As an example, if you install the e100 driver for two PRO/100 adapters
(eth0 and eth1), add the following to modules.conf or modprobe.conf:
(eth0 and eth1), add the following to a configuraton file in /etc/modprobe.d/
alias eth0 e100
alias eth1 e100

11
Documentation/networking/ip-sysctl.txt
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@@ -604,15 +604,8 @@ IP Variables:
ip_local_port_range - 2 INTEGERS
Defines the local port range that is used by TCP and UDP to
choose the local port. The first number is the first, the
second the last local port number. Default value depends on
amount of memory available on the system:
> 128Mb 32768-61000
< 128Mb 1024-4999 or even less.
This number defines number of active connections, which this
system can issue simultaneously to systems not supporting
TCP extensions (timestamps). With tcp_tw_recycle enabled
(i.e. by default) range 1024-4999 is enough to issue up to
2000 connections per second to systems supporting timestamps.
second the last local port number. The default values are
32768 and 61000 respectively.
ip_local_reserved_ports - list of comma separated ranges
Specify the ports which are reserved for known third-party

6
Documentation/networking/ipv6.txt
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@@ -2,9 +2,9 @@
Options for the ipv6 module are supplied as parameters at load time.
Module options may be given as command line arguments to the insmod
or modprobe command, but are usually specified in either the
/etc/modules.conf or /etc/modprobe.conf configuration file, or in a
distro-specific configuration file.
or modprobe command, but are usually specified in either
/etc/modules.d/*.conf configuration files, or in a distro-specific
configuration file.
The available ipv6 module parameters are listed below. If a parameter
is not specified the default value is used.

6
Documentation/networking/ixgb.txt
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@@ -274,9 +274,9 @@ Additional Configurations
-------------------------------------------------
Configuring a network driver to load properly when the system is started is
distribution dependent. Typically, the configuration process involves adding
an alias line to /etc/modprobe.conf as well as editing other system startup
scripts and/or configuration files. Many popular Linux distributions ship
with tools to make these changes for you. To learn the proper way to
an alias line to files in /etc/modprobe.d/ as well as editing other system
startup scripts and/or configuration files. Many popular Linux distributions
ship with tools to make these changes for you. To learn the proper way to
configure a network device for your system, refer to your distribution
documentation. If during this process you are asked for the driver or module
name, the name for the Linux Base Driver for the Intel 10GbE Family of

2
Documentation/networking/ltpc.txt
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@@ -25,7 +25,7 @@ the driver will try to determine them itself.
If you load the driver as a module, you can pass the parameters "io=",
"irq=", and "dma=" on the command line with insmod or modprobe, or add
them as options in /etc/modprobe.conf:
them as options in a configuration file in /etc/modprobe.d/ directory:
alias lt0 ltpc # autoload the module when the interface is configured
options ltpc io=0x240 irq=9 dma=1

25
Documentation/networking/netdevices.txt
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@@ -47,26 +47,25 @@ packets is preferred.
struct net_device synchronization rules
=======================================
dev->open:
ndo_open:
Synchronization: rtnl_lock() semaphore.
Context: process
dev->stop:
ndo_stop:
Synchronization: rtnl_lock() semaphore.
Context: process
Note1: netif_running() is guaranteed false
Note2: dev->poll() is guaranteed to be stopped
Note: netif_running() is guaranteed false
dev->do_ioctl:
ndo_do_ioctl:
Synchronization: rtnl_lock() semaphore.
Context: process
dev->get_stats:
ndo_get_stats:
Synchronization: dev_base_lock rwlock.
Context: nominally process, but don't sleep inside an rwlock
dev->hard_start_xmit:
Synchronization: netif_tx_lock spinlock.
ndo_start_xmit:
Synchronization: __netif_tx_lock spinlock.
When the driver sets NETIF_F_LLTX in dev->features this will be
called without holding netif_tx_lock. In this case the driver
@@ -87,20 +86,20 @@ dev->hard_start_xmit:
o NETDEV_TX_LOCKED Locking failed, please retry quickly.
Only valid when NETIF_F_LLTX is set.
dev->tx_timeout:
Synchronization: netif_tx_lock spinlock.
ndo_tx_timeout:
Synchronization: netif_tx_lock spinlock; all TX queues frozen.
Context: BHs disabled
Notes: netif_queue_stopped() is guaranteed true
dev->set_rx_mode:
Synchronization: netif_tx_lock spinlock.
ndo_set_rx_mode:
Synchronization: netif_addr_lock spinlock.
Context: BHs disabled
struct napi_struct synchronization rules
========================================
napi->poll:
Synchronization: NAPI_STATE_SCHED bit in napi->state. Device
driver's dev->close method will invoke napi_disable() on
driver's ndo_stop method will invoke napi_disable() on
all NAPI instances which will do a sleeping poll on the
NAPI_STATE_SCHED napi->state bit, waiting for all pending
NAPI activity to cease.

6
Documentation/networking/vortex.txt
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@@ -67,8 +67,8 @@ Module parameters
=================
There are several parameters which may be provided to the driver when
its module is loaded. These are usually placed in /etc/modprobe.conf
(/etc/modules.conf in 2.4). Example:
its module is loaded. These are usually placed in /etc/modprobe.d/*.conf
configuretion files. Example:
options 3c59x debug=3 rx_copybreak=300
@@ -425,7 +425,7 @@ steps you should take:
1) Increase the debug level. Usually this is done via:
a) modprobe driver debug=7
b) In /etc/modprobe.conf (or /etc/modules.conf for 2.4):
b) In /etc/modprobe.d/driver.conf:
options driver debug=7
2) Recreate the problem with the higher debug level,