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Diffstat (limited to 'kernel/net/ipv4/ipconfig.c')
-rw-r--r--kernel/net/ipv4/ipconfig.c34
1 files changed, 32 insertions, 2 deletions
diff --git a/kernel/net/ipv4/ipconfig.c b/kernel/net/ipv4/ipconfig.c
index 8e7328c6a..0bc7412d9 100644
--- a/kernel/net/ipv4/ipconfig.c
+++ b/kernel/net/ipv4/ipconfig.c
@@ -94,7 +94,7 @@
/* Define the timeout for waiting for a DHCP/BOOTP/RARP reply */
#define CONF_OPEN_RETRIES 2 /* (Re)open devices twice */
#define CONF_SEND_RETRIES 6 /* Send six requests per open */
-#define CONF_INTER_TIMEOUT (HZ/2) /* Inter-device timeout: 1/2 second */
+#define CONF_INTER_TIMEOUT (HZ) /* Inter-device timeout: 1 second */
#define CONF_BASE_TIMEOUT (HZ*2) /* Initial timeout: 2 seconds */
#define CONF_TIMEOUT_RANDOM (HZ) /* Maximum amount of randomization */
#define CONF_TIMEOUT_MULT *7/4 /* Rate of timeout growth */
@@ -146,6 +146,10 @@ u8 root_server_path[256] = { 0, }; /* Path to mount as root */
/* vendor class identifier */
static char vendor_class_identifier[253] __initdata;
+#if defined(CONFIG_IP_PNP_DHCP)
+static char dhcp_client_identifier[253] __initdata;
+#endif
+
/* Persistent data: */
static int ic_proto_used; /* Protocol used, if any */
@@ -728,6 +732,16 @@ ic_dhcp_init_options(u8 *options)
memcpy(e, vendor_class_identifier, len);
e += len;
}
+ len = strlen(dhcp_client_identifier + 1);
+ /* the minimum length of identifier is 2, include 1 byte type,
+ * and can not be larger than the length of options
+ */
+ if (len >= 1 && len < 312 - (e - options) - 1) {
+ *e++ = 61;
+ *e++ = len + 1;
+ memcpy(e, dhcp_client_identifier, len + 1);
+ e += len + 1;
+ }
}
*e++ = 255; /* End of the list */
@@ -1557,8 +1571,24 @@ static int __init ic_proto_name(char *name)
return 0;
}
#ifdef CONFIG_IP_PNP_DHCP
- else if (!strcmp(name, "dhcp")) {
+ else if (!strncmp(name, "dhcp", 4)) {
+ char *client_id;
+
ic_proto_enabled &= ~IC_RARP;
+ client_id = strstr(name, "dhcp,");
+ if (client_id) {
+ char *v;
+
+ client_id = client_id + 5;
+ v = strchr(client_id, ',');
+ if (!v)
+ return 1;
+ *v = 0;
+ if (kstrtou8(client_id, 0, dhcp_client_identifier))
+ DBG("DHCP: Invalid client identifier type\n");
+ strncpy(dhcp_client_identifier + 1, v + 1, 251);
+ *v = ',';
+ }
return 1;
}
#endif