netlink

When I run this cmd: tc qdisc add dev eth0 root red limit 51200000 min 128000 max 512000 avpkt 1024 burst 200 ecn probability 0.5 i get RTNETLINK answers: No such file or directory I have configured the kernel for netfilters , and all the networking options in menuconfig . I don't understand why this error occurs. I'm using iproute2-2.6.23 and Fedora 8. This was working fine on my laptop, but not on my Desktop PC? On my system your command autoloads the sch_red module. The question is rather old so on a modern system the autoloading should work fine if you have the required module. Check if

The task I am trying to achieve is actually quite simple (multicast the string "TEST" to a userland daemon), but the kernel module doesn't compile. It stops with the error: passing argument 4 of ‘genlmsg_multicast_allns’ makes integer from pointer without a cast [enabled by default] But shouldn't it just be the multicast group I defined? Here is the code for "clarification": #include <linux/module.h> #include <net/sock.h> #include <linux/netlink.h> #include <linux/skbuff.h> #include <linux/string.h> #include <net/netlink.h> #include <net/genetlink.h> struct sock *nl_sk = NULL; static void

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to read out linux kernel statistics of a single thread using netlink socket and taskstats. I could get taskstats to work using a python wrapper ( https://github.com/facebook/gnlpy ) but I want to do a C implementation. After setting up the socket, the message parameters and sending, the receiving nl_recvmsgs_default(sock) always returns an error code -7 ("Invalid input data or parameter") or -12 ("Object not found") depending on how I create the message to send. I checked all method invocations before nl_recvmsgs_default(sock) but

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I knew that udev plays on the linux system and it receives uevents sent from the kernel through netlink socket. However, my questions are: How kernel sends out the event ? It must be something triggered by adding/removing device and then sends out events to udev. How does kernel do this? (Is there any code example I can find? ) udev receives these uevents only through netlink socket. This is the only way that udev does it. Is this correct? When uevent is sent out from the kernel, I knew it can do broadcast. However, Can it do unicast? Thanks

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to compile a source code written here , which triggers Wi-Fi active scan in the user space. It requires netlink library, so I've done sudo apt-get install libnl-3-dev libnl-genl-3-dev And to compile it, gcc $(pkg-config --cflags --libs libnl-3.0 libnl-genl-3.0) scan_access_points.c , which is identical to gcc -I/usr/include/libnl3 -lnl-genl-3 -lnl-3 scan_access_points.c But the compile fails with numbers of undefined reference to 'SOMETHING' . The log is below and you can see it here . /tmp/ccTQB59P.o: In function `family_handler'

I am getting compiler error while compiling my old kernel module which is using netlink functions. int init_module() { /* Initialize the Netlink kernel interface */ nl_sk = netlink_kernel_create(&init_net, 17, 0, recv_cmd, NULL, THIS_MODULE); if(!nl_sk) { printk(KERN_INFO "failed to initialize system (error: 1001)\n"); return -ENOMEM; } .... Previously it works fine but now I am getting this error. error: too many arguments to function 'netlink_kernel_create' OS Information uname -a Linux ibrar-ahmed 3.8.0-17-generic #27-Ubuntu SMP Sun Apr 7 19:39:35 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Trying to figure out how one can use iproute2 to manage static label-switched MPLS routes in Linux kernel 4.1. I am aware iproute2 support for MPLS might be incomplete right now [2]. Can anyone please shed some light on what iproute2-4.1.1 is currently able to do? This is what I have found so far: Documentation/networking/mpls-sysctl.txt /proc/sys/net/mpls/platform_labels /proc/sys/net/mpls/conf//input Load mpls module sudo modprobe mpls_router Find sysctl support sysctl -a --pattern mpls net.mpls.conf.eth0.input = 0 net.mpls.conf.eth1.input = 0 net.mpls.conf.lo.input = 0 net.mpls.platform