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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2007-06-23 07:56:56 +0000 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2007-06-23 07:56:56 +0000 |
| commit | f19a0f03eefac77a52687989582a5bcba2e109d3 (patch) | |
| tree | 3fed6b3b2dfd6230eda1c873b043bb68967a283b /man7/netdevice.7 | |
| parent | 66ee0c7e89fe01348878638515edb8b2a51b9a2e (diff) | |
| download | man-pages-f19a0f03eefac77a52687989582a5bcba2e109d3.tar.gz | |
ffix
Diffstat (limited to 'man7/netdevice.7')
| -rw-r--r-- | man7/netdevice.7 | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/man7/netdevice.7 b/man7/netdevice.7 index 217fb1e207..65b802d9fa 100644 --- a/man7/netdevice.7 +++ b/man7/netdevice.7 @@ -24,7 +24,7 @@ Linux supports some standard ioctls to configure network devices. They can be used on any socket's file descriptor regardless of the family or type. They pass an -.B ifreq +.I ifreq structure: .nf @@ -57,7 +57,7 @@ struct ifconf { .fi Normally, the user specifies which device to affect by setting -.B ifr_name +.I ifr_name to the name of the interface. All other members of the structure may share memory. @@ -72,19 +72,19 @@ will be returned. .TP .B SIOCGIFNAME Given the -.BR ifr_ifindex , +.IR ifr_ifindex , return the name of the interface in -.BR ifr_name . +.IR ifr_name . This is the only ioctl which returns its result in -.BR ifr_name . +.IR ifr_name . .TP .B SIOCGIFINDEX Retrieve the interface index of the interface into -.BR ifr_ifindex . +.IR ifr_ifindex . .TP .BR SIOCGIFFLAGS ", " SIOCSIFFLAGS Get or set the active flag word of the device. -.B ifr_flags +.I ifr_flags contains a bitmask of the following values: .TS tab(:); @@ -115,23 +115,23 @@ process may read it. .TP .BR SIOCGIFMETRIC ", " SIOCSIFMETRIC Get or set the metric of the device using -.BR ifr_metric . +.IR ifr_metric . This is currently not implemented; it sets -.B ifr_metric +.I ifr_metric to 0 if you attempt to read it and returns .B EOPNOTSUPP if you attempt to set it. .TP .BR SIOCGIFMTU ", " SIOCSIFMTU Get or set the MTU (Maximum Transfer Unit) of a device using -.BR ifr_mtu . +.IR ifr_mtu . Setting the MTU is a privileged operation. Setting the MTU to too small values may cause kernel crashes. .TP .BR SIOCGIFHWADDR ", " SIOCSIFHWADDR Get or set the hardware address of a device using -.BR ifr_hwaddr . +.IR ifr_hwaddr . The hardware address is specified in a struct .IR sockaddr . .I sa_family @@ -142,12 +142,12 @@ Setting the hardware address is a privileged operation. .TP .B SIOCSIFHWBROADCAST Set the hardware broadcast address of a device from -.BR ifr_hwaddr . +.IR ifr_hwaddr . This is a privileged operation. .TP .BR SIOCGIFMAP ", " SIOCSIFMAP Get or set the interface's hardware parameters using -.BR ifr_map . +.IR ifr_map . Setting the parameters is a privileged operation. .nf @@ -167,7 +167,7 @@ and the architecture. .BR SIOCADDMULTI ", " SIOCDELMULTI Add an address to or delete an address from the device's link layer multicast filters using -.BR ifr_hwaddr . +.IR ifr_hwaddr . These are privileged operations. See also .BR packet (7) @@ -175,14 +175,14 @@ for an alternative. .TP .BR SIOCGIFTXQLEN ", " SIOCSIFTXQLEN Get or set the transmit queue length of a device using -.BR ifr_qlen . +.IR ifr_qlen . Setting the transmit queue length is a privileged operation. .TP .B SIOCSIFNAME Changes the name of the interface specified in -.BR ifr_name +.IR ifr_name to -.BR ifr_newname . +.IR ifr_newname . This is a privileged operation. It is only allowed when the interface is not up. @@ -194,14 +194,14 @@ means only addresses of the .B AF_INET (IPv4) family for compatibility. The user passes a -.B ifconf +.I ifconf structure as argument to the ioctl. It contains a pointer to an array of .I ifreq structures in -.B ifc_req +.I ifc_req and its length in bytes in -.BR ifc_len . +.IR ifc_len . The kernel fills the ifreqs with all current L3 interface addresses that are running: .I ifr_name @@ -222,7 +222,7 @@ Overflow is not an error. .\" .TP .\" .BR SIOCGIFSLAVE ", " SIOCSIFSLAVE .\" Get or set the slave device using -.\" .BR ifr_slave . +.\" .IR ifr_slave . .\" Setting the slave device is a privileged operation. .\" .PP .\" FIXME add amateur radio stuff. |