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authorJason Hobbs <jason.hobbs@calxeda.com>2011-08-31 10:37:31 -0500
committerJohn Rigby <john.rigby@linaro.org>2011-09-23 07:10:39 -0600
commite698c0e5a93f83d5c79c2c496693b800a137c00d (patch)
treeb605d00c628b4d834ed730055fb4a9c94c7fdbe9
parent06b622b246e13ea0d60f47174bfa5c1bb0767002 (diff)
downloadu-boot-linaro-stable-e698c0e5a93f83d5c79c2c496693b800a137c00d.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.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/net/bootp.c b/net/bootp.c
index a003c422b..73470f2d4 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -381,6 +381,11 @@ 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;
@@ -435,6 +440,41 @@ 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) {
+ if (uuid_str_valid(uuid)) {
+ *e++ = 97; /* Client Machine Identifier */
+ *e++ = 17;
+ *e++ = 0; /* type 0 - UUID */
+
+ uuid_str_to_bin(uuid, e);
+ e += 16;
+ } else {
+ printf("Invalid pxeuuid: %s\n", uuid);
+ }
+ }
+
+ *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;