Hi Rodolfo, On 5/24/2007, "Rodolfo Giometti" <[EMAIL PROTECTED]> wrote:
>Hello, > >I'm trying to use this new API for my LinuxPPS support but I have some >difficulties in understanding the code! > >Looking at http://linux-net.osdl.org/index.php/Generic_Netlink_HOWTO >is not clear... for example in line: > > msg_head = genlmsg_put(skb, pid, seq, type, 0, flags, DOC_EXMPL_C_ECHO, 1); > >what "pid", "seq", "type" and "flags" stand for? > >It could be possible to have a little kernel module implementing the >ECHO function as example to compile and test? You could look at Johannes Berg 802.11 generic netlink implementation for a good example (net/wireless/nl80211.c in John Linville's tree): http://git.kernel.org/?p=linux/kernel/git/linville/wireless-dev.git;a=blob;f=net/wireless/nl80211.c;h=d6a44a386c2b86b81514b08d3c9b324dd2c7d229;hb=HEAD >Again, I read in a message from Jamal Hadi Salim regarding Kernel < >--> User space Communication that: > > Essentially nothing new, Communication is as in standard netlink > approach. i.e from user space you open a netlink socket to the > kernel - in this case family NETLINK_GENERIC - and send and receive > response as well as asynchronous events. To receive to events you > subscribe to specific multicast groups. > >So I suppose I can modify a little my userland programs using old API >in order to support this new API. Is that right? You probably want to use the libnl library. The latest SVN code has support for generic netlink: http://people.suug.ch/~tgr/libnl/ Cheers, Samuel. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
