From: Chinmaya Mishra <chinmaya4@gmail.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: How to get the IP address in kernel module
Date: Wed, 19 Jul 2006 15:23:45 +0530 [thread overview]
Message-ID: <44BE0129.2090600@innomedia.soft.net> (raw)
Hi,
Can you provide an example how to invoke ioctl on
device in kernel module.
For example. I want to find out the IP address of
my eth0 and I want to make SIOCSIFADDR on it from kernel module.
At user space i am doing it like this.....
unsigned long *ip;
char *iface;
int sockfd;
struct ifreq ifr;
strcpy(ifr.ifr_name, iface); // interface name 'eth0'
sockfd = socket(AF_INET,SOCK_DGRAM,0);
ioctl(sockfd, SIOCGIFADDR, (char*)&ifr);
memcpy(ip, &(ifr.ifr_addr.sa_data[2]),4); //Copy the ip addr
close(sockfd);
How to port this in kernel space.
Thank you.
Chinmaya
reply other threads:[~2006-07-19 9:47 UTC|newest]
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