This patch adds the client identifier and class identifier options to dhcp. The former permits consistent address assignment from servers that key off the client identifier; the latter aids in debugging.
Index: net/bootp.c =================================================================== RCS file: /cvsroot/u-boot/u-boot/net/bootp.c,v retrieving revision 1.14 diff -u -r1.14 bootp.c --- net/bootp.c 15 Apr 2004 21:48:49 -0000 1.14 +++ net/bootp.c 30 Mar 2005 01:14:17 -0000 @@ -378,8 +378,11 @@ * Initialize BOOTP extension fields in the request. */ #if (CONFIG_COMMANDS & CFG_CMD_DHCP) -static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP) +static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t RequestedIP, + char *EtherAddr) { + char *class_id = "U-boot"; + int len; u8 *start = e; u8 *cnt;
@@ -404,6 +407,23 @@ *e++ = (576 - 312 + OPT_SIZE) >> 8; *e++ = (576 - 312 + OPT_SIZE) & 0xff;
+ *e++ = 61; /* Client Identifier, use the MAC */ + *e++ = 7; + *e++ = 1; + *e++ = EtherAddr[0]; + *e++ = EtherAddr[1]; + *e++ = EtherAddr[2]; + *e++ = EtherAddr[3]; + *e++ = EtherAddr[4]; + *e++ = EtherAddr[5]; + + *e++ = 60; /* Class Identifier */ + len = strlen(class_id); + *e++ = len; + /* don't use strcpy, we don't want the terminating 0 */ + memcpy(e, class_id, len); + e += len; + if (ServerID) { int tmp = ntohl (ServerID);
@@ -671,7 +691,7 @@
/* Request additional information from the BOOTP/DHCP server */ #if (CONFIG_COMMANDS & CFG_CMD_DHCP) - ext_len = DhcpExtended(bp->bp_vend, DHCP_DISCOVER, 0, 0); + ext_len = DhcpExtended(bp->bp_vend, DHCP_DISCOVER, 0, 0, NetOurEther); #else ext_len = BootpExtended(bp->bp_vend); #endif /* CFG_CMD_DHCP */ @@ -817,7 +837,7 @@ * Copy options from OFFER packet if present */ NetCopyIP(&OfferedIP, &bp->bp_yiaddr); - extlen = DhcpExtended(bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP); + extlen = DhcpExtended(bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP, NetOurEther);
pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen; iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;