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xcat-dep/gpxe/gpxe-0.9.7-bootptodhcpfailover.patch
jbjohnso a60d90375d -Add several patches from gPXE git tree (all of this checkin is from gPXE git tree)
-Add workaround for use of Etherboot UNDI stack from git tree
-Add workaround for UNDI drivers that do not call the undi open call before attempting to use defive from git tree
-Change ProxyDHCP broadcast to go to port 67 (from git tree)
-Enable use of DHCP options when BOOTP fields are not present
-Report UNDI device to driver as a more standard interface type
-Workaround malformed OACK packets sent by certain PXE servers
-Avoid a spurious IRQ
-Add fix for e1000 driver
-Have the UNDI stack report UNDI capabilities
-Fix some places where interrupt handlers did not use iret to return
2009-08-22 02:03:07 +00:00

34 lines
1.1 KiB
Diff

diff -urN gpxe-0.9.7/src/net/dhcppkt.c gpxe-0.9.7-bootptodhcpfailover/src/net/dhcppkt.c
--- gpxe-0.9.7/src/net/dhcppkt.c 2009-03-01 21:23:42.000000000 -0500
+++ gpxe-0.9.7-bootptodhcpfailover/src/net/dhcppkt.c 2009-08-21 21:49:52.000000000 -0400
@@ -155,6 +155,8 @@
memset ( field_data, 0, field->len );
memcpy ( dhcp_packet_field ( dhcppkt->dhcphdr, field ),
data, len );
+ /* Erase any equivalent option from the options block */
+ dhcpopt_store ( &dhcppkt->options, tag, NULL, 0 );
return 0;
}
@@ -181,14 +183,16 @@
void *data, size_t len ) {
struct dhcp_packet_field *field;
void *field_data;
- size_t field_len;
+ size_t field_len = 0;
- /* If this is a special field, return it */
+ /* Identify special field, if any */
if ( ( field = find_dhcp_packet_field ( tag ) ) != NULL ) {
field_data = dhcp_packet_field ( dhcppkt->dhcphdr, field );
field_len = field->used_len ( field_data, field->len );
- if ( ! field_len )
- return -ENOENT;
+ }
+
+ /* Return special field, if it exists and is populated */
+ if ( field_len ) {
if ( len > field_len )
len = field_len;
memcpy ( data, field_data, len );