A Unix domain socket would work, if you use it only from the main thread. Instead though, VPP already has a performant binary API that uses shared memory. Could you not use this? What sort of messages are you trying to send?
Chris. From: yug...@telincn.com [mailto:yug...@telincn.com] Sent: Wednesday, March 1, 2017 4:38 To: Dave Barach (dbarach) <dbar...@cisco.com>; Luke, Chris <chris_l...@cable.comcast.com>; Ed Warnicke <hagb...@gmail.com> Cc: vpp-dev <vpp-dev@lists.fd.io> Subject: Re: RE: [vpp-dev] system func in vpp Thanks. So it's not security to use unix socket too? If i want to send some data from vpp to linux or to another process, any options? Regards, Ewan ________________________________ yug...@telincn.com<mailto:yug...@telincn.com> From: Dave Barach (dbarach)<mailto:dbar...@cisco.com> Date: 2017-02-28 21:12 To: Luke, Chris<mailto:chris_l...@comcast.com>; yug...@telincn.com<mailto:yug...@telincn.com>; Ed Warnicke<mailto:hagb...@gmail.com> CC: vpp-dev<mailto:vpp-dev@lists.fd.io> Subject: RE: [vpp-dev] system func in vpp See also src/vnet/unix/tuntap.c, which seems to already do pretty much what you’re describing. It’s disabled by default. Use the command-line argument “tuntap { enable }” to kick the tires. In addition to the concerns which Chris mentioned, adding ‘system(“foo”)’ calls to vpp is not a security best practice. Thanks… Dave From: vpp-dev-boun...@lists.fd.io<mailto:vpp-dev-boun...@lists.fd.io> [mailto:vpp-dev-boun...@lists.fd.io] On Behalf Of Luke, Chris Sent: Tuesday, February 28, 2017 7:18 AM To: yug...@telincn.com<mailto:yug...@telincn.com>; Ed Warnicke <hagb...@gmail.com<mailto:hagb...@gmail.com>> Cc: vpp-dev <vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>> Subject: Re: [vpp-dev] system func in vpp Using any syscall needs thinking through from inside VPP. Using system() or similar is simply ill-advised; what you’re doing is best done outside of VPP where the penalty of executing fork() is much diminished. If you really must create these interfaces from inside VPP then I suggest you look up the netlink ABI in Linux, which is what the ‘ip’ program uses, and program it directly. Chris. From: vpp-dev-boun...@lists.fd.io<mailto:vpp-dev-boun...@lists.fd.io> [mailto:vpp-dev-boun...@lists.fd.io] On Behalf Of yug...@telincn.com<mailto:yug...@telincn.com> Sent: Monday, February 27, 2017 22:56 To: Ed Warnicke <hagb...@gmail.com<mailto:hagb...@gmail.com>> Cc: vpp-dev <vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>> Subject: Re: [vpp-dev] system func in vpp I would like to add veth interface in vpp for every phy interface, " system("ip link add vpp type veth peer name kernel-vpp") ". It's convenient to do this from vpp. Regards, Ewan. ________________________________ yug...@telincn.com<mailto:yug...@telincn.com> From: Ed Warnicke<mailto:hagb...@gmail.com> Date: 2017-02-28 11:44 To: yug...@telincn.com<mailto:yug...@telincn.com> CC: vpp-dev<mailto:vpp-dev@lists.fd.io> Subject: Re: Re: [vpp-dev] system func in vpp Why would you do that from within vpp? Ed On Mon, Feb 27, 2017 at 8:36 PM, yug...@telincn.com<mailto:yug...@telincn.com> <yug...@telincn.com<mailto:yug...@telincn.com>> wrote: "int system(const char *command)" I would like to use this func to start another dameon , such as " system("zebra -d") ". Regards, Ewan ________________________________ yug...@telincn.com<mailto:yug...@telincn.com> From: Ed Warnicke<mailto:hagb...@gmail.com> Date: 2017-02-28 11:15 To: yug...@telincn.com<mailto:yug...@telincn.com> CC: vpp-dev<mailto:vpp-dev@lists.fd.io> Subject: Re: [vpp-dev] system func in vpp I'm not quite sure what you mean by the 'func system'... Ed On Mon, Feb 27, 2017 at 7:26 PM, yug...@telincn.com<mailto:yug...@telincn.com> <yug...@telincn.com<mailto:yug...@telincn.com>> wrote: Hi, all Does vpp can't use func system? Any reason to this or what can i do if i really need ? ________________________________ yug...@telincn.com<mailto:yug...@telincn.com> _______________________________________________ vpp-dev mailing list vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io> https://lists.fd.io/mailman/listinfo/vpp-dev
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