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Re: dhcp XID generation
Hi Hugo,
If the method to generate the XID seems suitable then here follows trial
number 3 (hopefully correct this time :-/):
<patch>
Index: packages/net/tcpip/current/src/lib/dhcp_prot.c
===================================================================
RCS file: /usr/cvs/eCos/packages/net/net/tcpip/current/src/lib/dhcp_prot.c,v
retrieving revision 1.1
diff -r1.1 dhcp_prot.c
395a396
>
397d397
< xid = (cyg_uint32)res + (cyg_uint32)(0xffffffff & cyg_current_time());
399,400d398
< else
< xid = res->bp_xid; // use what's there already
446a445,446
> xid = res->bp_xid; // default to what's there already;
>
487a488,496
> }
>
> // generates a new XID
> {
> unsigned char* xp = (unsigned char*)&xid;
>
> *xp++ = ifr.ifr_hwaddr.sa_data[5];
> *xp++ = ifr.ifr_hwaddr.sa_data[4];
> *((cyg_uint16*)xp) = (cyg_uint16)(arc4random() & 0xffff);
</patch>
Robin