Hi Martine,
I understood the idea behind the concept. Thank you very much!
I came across a question about all the
#ifdef MODULE_XXXX_XXXX_XXX, just like #ifdef MODULE_GNRC_NDP_ROUTER,
MODULE_GNRC_NDP
I have no idea where do the source code defined them, how was the name defined?
Thank you for your quick reply.
Cheers,
Haoyang
> On Nov 18, 2015, at 18:08, Martine Lenders <[email protected]> wrote:
>
> Hi Haoyang,
> pseaudo-modules are used to describe certain module configurations (and macro
> settings) in a way that is easy and convenient to use for a user. For
> example: Without reading a lot about how networking is working under the
> hoodit might not be immediately clear that for normal IPv6 communication you
> need NDP and thus ICMPv6. The module `gnrc_ipv6_default` provides a user with
> these modules without the requirement to know everything about our network
> stack, while an experienced user might want to choose to exclude NDP to
> optimize for size and configure the address resolution manually.
>
> If gnrc_netif_default pulls in 6LoWPAN without the presence of IPv6 this is
> definitely an error of the dependencies. I will look into it tomorrow.
>
> Good night (from Berlin),
> Martine
>
> Am 18.11.2015 22:26 schrieb "Haoyang Yu" <[email protected]
> <mailto:[email protected]>>:
> Hello Martine,
>
> Thanks for you answer, right now I fully understand how it works. But why do
> we need Pseudo-modules? Can we use other modules directly without indirect
> way.
>
> My last question is there is a note that:
> # NOTE: 6LoWPAN will be included if IEEE802.15.4 devices are present
> I use module only for gnrc_netif_default, it seems include the 6LoWPAN module
> too?
>
> Thanks!
> Haoyang
>
>> On Nov 18, 2015, at 01:18, Martine Lenders <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> Hello Haoyang,
>> gnrc_netif_default is a pseudo-module, defined in Makefile.pseudomodules.
>> Pseudo-modules are modules, that don't have code, but are used by the
>> build-system to collect other modules as dependencies or to express a
>> certain build configuration. gnrc can be found in `sys/net/gnrc`. If the
>> directory the module resides in is called the same as the module, the MODULE
>> macro needs not be set in the module's Makefile.
>> Can you rephrase your second question. I have difficulties to understand
>> what you are going at.
>>
>> Cheers,
>> Martine
>>
>> 2015-11-17 21:42 GMT+01:00 Haoyang Yu <[email protected]
>> <mailto:[email protected]>>:
>> Hi all,
>>
>> I followed that information provided by community, but did not find the
>> MODULE gnrc, and also just find gnrc_netif MODULE in sys, but not
>> gnrc_netif_default
>>
>> # gnrc is a meta module including all required, basic gnrc networking
>> modules
>> USEMODULE += gnrc
>> # use the default network interface for the board
>> USEMODULE += gnrc_netif_default
>>
>> # NOTE: 6LoWPAN will be included if IEEE802.15.4 devices are present
>> If I just want to get IEEE802.15.4 data, from my perspective I directly use
>> MODULE of gnrc_netif, right? And add packet header I defined by myself.
>>
>> Thanks for your answers.
>>
>> Cheers,
>> Haoyang
>>
>> > On Nov 17, 2015, at 10:05, Oleg Hahm <[email protected]
>> > <mailto:[email protected]>> wrote:
>> >
>> > Hi!
>> >
>> > One tiny addition:
>> >
>> > Am Tue, Nov 17, 2015 at 01:56:09PM +0100 schrieb Martine Lenders:
>> >> * gnrc_sixlowpan is the bare minimum implementation of 6LoWPAN for GNRC
>> >> * gnrc_sixlowpan_frag and gnrc_sixlowpan_iphc implenent 6LoWPAN
>> >> fragmentation and IP header compression respectively
>> >
>> > There is also *grnc_sixlowpan_ctx* for stateful compression (using the 6co
>> > flag in RAs).
>> >
>> > Cheers,
>> > Oleg
>> > --
>> > printk (KERN_ALERT "You are screwed! " ...);
>> > linux-2.6.6/arch/i386/kernel/efi.c
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