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authorJason Hobbs <jason.hobbs@calxeda.com>2011-06-29 11:58:29 -0500
committerJohn Rigby <john.rigby@linaro.org>2011-06-30 12:23:35 +0100
commitb4700b8767c0b62526794c0b7beff6d02284fa55 (patch)
treeb157a80b8dbd246bcf9638ca6298bb453541c920
parent202e29fe1211635e007974f96881f2e24125e782 (diff)
downloadu-boot-linaro-stable-b4700b8767c0b62526794c0b7beff6d02284fa55.tar.gz
net: bootp: add PXE/RFC 4578 DHCP options support
These options are required to be present in RFC 4578 compliant DHCP requests. They give more information to DHCP servers to allow serving different DHCP responses to different systems based on client architecture, client capabilities, UUID, or vendor. Signed-off-by: Jason Hobbs <jason.hobbs@calxeda.com>
-rw-r--r--net/bootp.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/net/bootp.c b/net/bootp.c
index 4db63cbbe..06ff5982d 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -360,6 +360,11 @@ static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t R
{
u8 *start = e;
u8 *cnt;
+#if defined(CONFIG_BOOTP_PXE)
+ char *uuid;
+ size_t vci_strlen;
+ u16 clientarch;
+#endif
#if defined(CONFIG_BOOTP_VENDOREX)
u8 *x;
@@ -414,6 +419,37 @@ static int DhcpExtended (u8 * e, int message_type, IPaddr_t ServerID, IPaddr_t R
}
#endif
+#if defined(CONFIG_BOOTP_PXE)
+ clientarch = CONFIG_BOOTP_PXE_CLIENTARCH;
+ *e++ = 93; /* Client System Architecture */
+ *e++ = 2;
+ *e++ = (clientarch >> 8) & 0xff;
+ *e++ = clientarch & 0xff;
+
+ *e++ = 94; /* Client Network Interface Identifier */
+ *e++ = 3;
+ *e++ = 1; /* type field for UNDI */
+ *e++ = 0; /* major revision */
+ *e++ = 0; /* minor revision */
+
+ uuid = getenv("pxeuuid");
+
+ if (uuid) {
+ *e++ = 97; /* Client Machine Identifier */
+ *e++ = 17;
+ *e++ = 0; /* type 0 - UUID */
+
+ uuid_str_to_bin(uuid, e);
+ e += 16;
+ }
+
+ *e++ = 60; /* Vendor Class Identifier */
+ vci_strlen = strlen(CONFIG_BOOTP_VCI_STRING);
+ *e++ = vci_strlen;
+ memcpy(e, CONFIG_BOOTP_VCI_STRING, vci_strlen);
+ e += vci_strlen;
+#endif
+
#if defined(CONFIG_BOOTP_VENDOREX)
if ((x = dhcp_vendorex_prep (e)))
return x - start;