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Date: Mon, 11 May 2009 12:36:43 -0700 From: Randy Dunlap <randy.dunlap@...cle.com> To: Daniel Lezcano <daniel.lezcano@...e.fr> CC: Tianjin Zhang <ztianjin@...il.com>, Linux Netdev List <netdev@...r.kernel.org> Subject: Re: interprocess communication with netlinks Daniel Lezcano wrote: > Tianjin Zhang wrote: >> i think the following material can help you. >> >> 1. http://lwn.net/Articles/262385/ introduce the IPN, >> >> 2. http://www.linuxjournal.com/article/7356 introduce how to use >> netlink >> socket and why >> > Thank you but I already saw these documents. I am used to play with the > netlink for kernel <-> user communication, I am wondering if it is > possible to have the applications to communicate, I mean user <-> user. > > I saw a comment in the mailing list archive > http://kerneltrap.org/mailarchive/linux-kernel/2007/12/7/493793/thread > > "... with minor adjustments we have the facilities to > meet your needs. There is no need for yet-another-protocol to do what > you're trying to do, we already have too much duplicated > functionality." > > > Were these "minor adjustements" done ? > > Thanks > -- Daniel > >> On Fri, May 8, 2009 at 12:00 AM, Daniel Lezcano >> <daniel.lezcano@...e.fr>wrote: >> >> >>> Hi netdev gurus ! >>> >>> I am trying to make several processes to communicate via the netlink >>> protocol. >>> >>> I saw a discussion around the AF_IPN (inter process communication) >>> protocol >>> and it seems the same can be done with the AF_NETLINK protocol with >>> minor >>> modifications in the kernel. Were these modifications done ? >>> >>> I am trying to use multicast between several processes, for >>> notification. >>> >>> What protocol should I use to create the socket ? >>> >>> fd = socket(PF_NETLINK, SOCK_RAW, ???); >>> >>> I was not able to find any suitable pointer to explain how to do >>> that, so I >>> blindly tried several combinations but I am afraid to interact with the >>> other netlink protocols when using a multicast group, especially when >>> there >>> are other applications like avahi-daemon or "ip monitor all". >>> >>> Does anyone have a pointer to a documentation (not the redhat one, >>> pls), or >>> some clues ? There's also a paper/doc here: http://people.redhat.com/nhorman/papers/netlink.pdf -- ~Randy LPC 2009, Sept. 23-25, Portland, Oregon http://linuxplumbersconf.org/2009/ -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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