[U-Boot-Users] recieving network packets ?
Hi, I uboot - i want to recieve network packets. I wrote a small program using the code available in uboot. However its not working ?. Can anyone point me where i am going wrong ?.
I am trying to write a server kind of a cmd - which recieves some requests from host and carries out some actions.
I just want UdpProtoHandler to be called whenever the ethernet controller recieves a packet.
As a start, i am sending raw ethernet packets on the network.
But, NetReceive Function is not getting called.
Why ?. Am i doing something wrong ?.
Regards,
John
My Code,
static void UdpProtoHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) ; static void udptimeout (void) { NetSetTimeout (100 * CFG_HZ, udptimeout) ; NetState = NETLOOP_CONTINUE; }
int send_udp (void) { DECLARE_GLOBAL_DATA_PTR;
eth_halt();
if (eth_init(bd) < 0) return(-1);
NetState = NETLOOP_CONTINUE; NetSetTimeout (10 * CFG_HZ, udptimeout); NetSetHandler (UdpProtoHandler) ;
return 1 ; }
static void UdpProtoHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len) {
puts ("handler:-------------------\n") ; printf ("dest : %u src:%u and length : %u\n", dest, src, len) ;
while (len > 0) { printf ("%c", *pkt) ; pkt++ ; len-- ; }
puts ("\ndone\n") ; NetState = NETLOOP_SUCCESS; }
In message 3634de740601250603r38b2b323i4a075f7fcabe5260@mail.gmail.com you wrote:
I uboot - i want to recieve network packets. I wrote a small program using the code available in uboot. However its not working ?. Can anyone point me where i am going wrong> ?.
Which protocol are you trying to implement?
Did you read the description in net/net.c, and did you extend NetLoop() for your protocol? You don;t mention any of this in your code snippet...
And did you try enabling DEBUG messages in the network code?
Best regards,
Wolfgang Denk
On 1/25/06, Wolfgang Denk wd@denx.de wrote:
In message 3634de740601250603r38b2b323i4a075f7fcabe5260@mail.gmail.com you wrote:
I uboot - i want to recieve network packets. I wrote a small program using the code available in uboot. However its not working ?. Can anyone point me where i am going
wrong> ?.
Which protocol are you trying to implement?
Its an application level protocol using UDP. i am able to send packet but unable to recieve packets.
I am trying to add a command which when executed, just acts like a server - it just recieves some packets from a remote host and takes action.
i am having trouble in just doing that. i read the description in net/net.c.
Could u please help me on this. please let me know where am i doing wrong.
i am implementing a command it does not send any packets - it just recieves packets from a remote host. (Just like a server in network applications.)
Regards, John.
Maximus wrote:
On 1/25/06, Wolfgang Denk wd@denx.de wrote:
In message 3634de740601250603r38b2b323i4a075f7fcabe5260@mail.gmail.com you wrote:
I uboot - i want to recieve network packets. I wrote a small program using the code available in uboot. However its not working ?. Can anyone point me where i am going
wrong> ?.
Which protocol are you trying to implement?
Its an application level protocol using UDP. i am able to send packet but unable to recieve packets.
I am trying to add a command which when executed, just acts like a server - it just recieves some packets from a remote host and takes action.
i am having trouble in just doing that. i read the description in net/net.c.
Could u please help me on this. please let me know where am i doing wrong.
i am implementing a command it does not send any packets - it just recieves packets from a remote host. (Just like a server in network applications.)
UBoot has a netconsole capability which listens via UDP. Why not try using this feature instead of inventing something new.
Once you have netconsole configured and working, a remote client can send a UBoot command, shell script, custom command or even a UBoot applet.
Regards, John.
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In message 3634de740601260323l57a698beh2636f99d70dddd98@mail.gmail.com you wrote:
Its an application level protocol using UDP. i am able to send
^^^^^^^^^^^^^^^^^
packet but unable to recieve
^^^^^^^^^^^^^^^^^
packets.
...
i am implementing a command it does not send any packets - it just
^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^
recieves packets
^^^^^^^^
Your problem description is confusing.
Best regards,
Wolfgang Denk
Hi, I just want to implement a command which just recieves commands (UDP Packets) from remote and executes them.
Just a standalone function which does the same.
Is this possible in u-boot ?
I was just thinking of using Main packet reception loop in NetLoop Function - something like calling eth_rx within a loop.
What does WATCHDOG_RESET do ?. is it neccessary to include in such a loop ?
Regards, John
On 1/27/06, Wolfgang Denk wd@denx.de wrote:
In message 3634de740601260323l57a698beh2636f99d70dddd98@mail.gmail.com you wrote:
Its an application level protocol using UDP. i am able to send
^^^^^^^^^^^^^^^^^packet but unable to recieve
^^^^^^^^^^^^^^^^^packets.
...
i am implementing a command it does not send any packets - it just
^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^recieves packets
^^^^^^^^
Your problem description is confusing.
Best regards,
Wolfgang Denk
-- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de The sooner our happiness together begins, the longer it will last. -- Miramanee, "The Paradise Syndrome", stardate 4842.6
In message 3634de740601262131n53583c14y8ad5889c2d6b9efc@mail.gmail.com you wrote:
I just want to implement a command which just recieves commands(UDP Packets) from remote and executes them.
Just a standalone function which does the same.
Why are yoiu re-inventing the wheel? As mentioned before, U-Booit supports the netconsole protocol. Just use the existing code.
Is this possible in u-boot ?
Of course it is.
Best regards,
Wolfgang Denk
participants (3)
-
Andrew Wozniak -
Maximus -
Wolfgang Denk