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From: "Gokoen" <gokoen_masahiro@ybb.ne.jp>
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Date: Fri, 05 Oct 2007 12:24:00 -0000
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Subject: [ECOS] Ethernet driver question
X-SW-Source: 2007-10/txt/msg00033.txt.bz2

Hello,

I am a newcomer to eCos.

I am trying to run LAN91C111 driver using "net" template,but 
I am encountered what I cannot understand.

My target board is implemented with SH7709S CPU and 
SMSC LAN91C111 ethernet controller.

Looks like doing nothing,so
I checked attach routine.

I discovered attach is executed at 
/packages/net/bsd_tcpip/current/src/sys/net/if_ethersubr.c
ether_ifattach(ifp, bpf) function's last part.

 if (ng_ether_attach_p != NULL)
  (*ng_ether_attach_p)(ifp);

But I discovered that because ng_ether_attach_p == NULL,
it skipped over (*ng_ether_attach_p)(ifp).

ng_ether_attach_p is defined in 
/packages/net/bsd_tcpip/current/include/sys/param.h
#define ng_ether_attach_p cyg_ng_ether_attach_p
but cyg_ng_ether_attach_p == NULL.

eCos version is CVS downloaded current version.

I do not know why this happens.
Would you please teach me what shoud I do ?

I would appreciate your help.

Gokoen


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