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.TH "__DEV_GET_BY_INDEX" 9 "August 2005" "Kernel Hackers Manual" "LINUX"
.SH NAME
__dev_get_by_index \- find a device by its ifindex
.SH "SYNOPSIS"
.ad l
.hy 0
.HP 44
struct\ net_device\ *\ \fB__dev_get_by_index\ \fR\ (int\ \fIifindex\fR);
.ad
.hy

.SH "ARGUMENTS"

.TP
\fIifindex\fR
index of device

.SH "DESCRIPTION"

.PP
Search for an interface by index\&. Returns \fBNULL\fR if the device is not found or a pointer to the device\&. The device has not had its reference counter increased so the caller must be careful about locking\&. The caller must hold either the RTNL semaphore or \fIdev_base_lock\fR\&.