Hello,
I am a beginner in operating system level programming and a novice in the use of Genode OS.
I use Genode OS Framework 15.11 from the sourceforge download. I have carried out successfully the hello world introduction from the 15.05 manual (Chapter 2.5) and the hello tutorial from the homepage, but now I am stuck.
Scenario: I have a (non-genode) server (runs in another terminal) which sents UDP packets. These UDP packets I would like to register within my program at Genode OS (hw_zync) on a qemu-emulated Parallella Board.
For the Parallella Board the Genodes so called base-hw platform is to be used.
I already know that there are network drivers within dde_ipxe and that within the repository "os" under "net" and "nic" exists header files (e.g ethernet.h, udp.h). Furthermore, I know that I need to include the IP address within the run files somehow. I also can not find (not even with "find") the file <lwip/sockets.h>, which is referrenced in some files (like ).
I do not know how I can achieve my implementation using this found information. How can I access the network interface of Parallella Board? How do I register UDP packets for further processing?
Has anyone in this regard already functioning implementation examples which help me understand my desired realization.
with regards, Jerome
Hello,
If you want a really simple UDP example there is a TFTP client that uses the lwIP raw API. You can use the libc for "standard" sockets, but if performance isn't much of a concern than I think starting out with lwIP is a more pleasant choice.
https://github.com/genodelabs/genode-world/blob/master/src/server/tftp_rom/m...
There is some documentation on the raw API in the lwip contrib folder at src/lib/lwip/doc/rawapi.txt
Emery
On Sun, May 15, 2016 at 06:45:04PM +0200, Rank Jerome wrote:
Hello,
I am a beginner in operating system level programming and a novice in the use of Genode OS.
I use Genode OS Framework 15.11 from the sourceforge download. I have carried out successfully the hello world introduction from the 15.05 manual (Chapter 2.5) and the hello tutorial from the homepage, but now I am stuck.
Scenario: I have a (non-genode) server (runs in another terminal) which sents UDP packets. These UDP packets I would like to register within my program at Genode OS (hw_zync) on a qemu-emulated Parallella Board.
For the Parallella Board the Genodes so called base-hw platform is to be used.
I already know that there are network drivers within dde_ipxe and that within the repository "os" under "net" and "nic" exists header files (e.g ethernet.h, udp.h). Furthermore, I know that I need to include the IP address within the run files somehow. I also can not find (not even with "find") the file <lwip/sockets.h>, which is referrenced in some files (like ).
I do not know how I can achieve my implementation using this found information. How can I access the network interface of Parallella Board? How do I register UDP packets for further processing?
Has anyone in this regard already functioning implementation examples which help me understand my desired realization.
with regards, Jerome
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Thank you for the info. I am still just evaluating. I'll call then again regarding my research :)
thanks and regards, Jerome
What I've noticed so far:
I had the qemu version 2.0.0 (kubuntu 14.04) and also obtained "PHY address is not setup Correctly 0" [1] at my call ! ! $make run/lwip ! A manual qemu upgrade to version 2.6.0 [2] solves the problem with me. I can therefore confirm the solution note [3].
Furthermore, I have received warnings at my call ! ! $make run/lwip ! by "ip4_addr.h" (within $ (Genode DIR)/contrib/lwip-136ee70f33ffced072262d589c24ab3252d15eff/include/lwip/lwip/).
I was able to resolve the warnings with me by a change in the line 200 from origin: ! ! #define ip_addr_isany (addr1) ((addr1) == NULL || (addr1) -> addr == IPADDR_ANY) !
to my solution: ! ! #define ip_addr_isany(addr1) ( (((void *) addr1) != NULL) ? ((addr1)->addr == IPADDR_ANY) : 0 ) !
and a change due to lack of space in the line 213 from origin: ! ! LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, !
to my solution: ! ! LWIP_DEBUGF(debug, ("%" U16_F ".%" U16_F ".%" U16_F ".%" U16_F, !
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[1] https://github.com/genodelabs/genode/issues/1667#issuecomment-144328104 [2] http://wiki.qemu.org/Download [3] https://github.com/genodelabs/genode/issues/1667#issuecomment-144346297
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Emery Hemingway -
Rank Jerome