* Re: HELP: Linux Net Driver confusions
[not found] <393C11DD.1EDA3EC1@lucent.com>
@ 2000-06-06 21:28 ` Tom Roberts
2000-06-06 21:52 ` Dan Malek
0 siblings, 1 reply; 2+ messages in thread
From: Tom Roberts @ 2000-06-06 21:28 UTC (permalink / raw)
Cc: linuxppc-embedded
Tom Roberts wrote:
> I am trying to write a network driver [...]
> In particular, I am trying to use non-ethernet headers, and cannot
> get the kernel to deliver a ping packet (ICMP protocol) back to the
> ping program even though the driver delivers the packets OK. BUT --
> essentially the same driver does seem to work on PowerPC linux....
Thanks to Jonathan Brauer, I got it to work.
Remarkably, the value in skb->protocol is in network byte order,
not the natural byte order of the current CPU. So changing:
skb->protocol = ETH_P_IP;
to:
skb->protocol = htons(ETH_P_IP);
made it work.
Note that the PowerPC byte order is the same as network order,
which is why it worked on the PowerPC but not the i586.
[sent to both c.o.l.dev.sys and linuxppc-embedded
because I queried both.]
Tom Roberts tjroberts@lucent.com
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
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[not found] <393C11DD.1EDA3EC1@lucent.com>
2000-06-06 21:28 ` HELP: Linux Net Driver confusions Tom Roberts
2000-06-06 21:52 ` Dan Malek
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