#define BOOTP_VENDOR_MAGIC 0x63825363 /* RFC1048 Magic Cookie */
-#define TIMEOUT 5000UL /* Milliseconds before trying BOOTP again */
+/*
+ * The timeout for the initial BOOTP/DHCP request used to be described by a
+ * counter of fixed-length timeout periods. TIMEOUT_COUNT represents
+ * that counter
+ *
+ * Now that the timeout periods are variable (exponential backoff and retry)
+ * we convert the timeout count to the absolute time it would have take to
+ * execute that many retries, and keep sending retry packets until that time
+ * is reached.
+ */
#ifndef CONFIG_NET_RETRY_COUNT
# define TIMEOUT_COUNT 5 /* # of timeouts before giving up */
#else
# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT)
#endif
+#define TIMEOUT_MS ((3 + (TIMEOUT_COUNT * 5)) * 1000)
#define PORT_BOOTPS 67 /* BOOTP server UDP port */
#define PORT_BOOTPC 68 /* BOOTP client UDP port */
#define CONFIG_DHCP_MIN_EXT_LEN 64
#endif
-ulong BootpID;
+#ifndef CONFIG_BOOTP_ID_CACHE_SIZE
+#define CONFIG_BOOTP_ID_CACHE_SIZE 4
+#endif
+
+ulong bootp_ids[CONFIG_BOOTP_ID_CACHE_SIZE];
+unsigned int bootp_num_ids;
int BootpTry;
+ulong bootp_start;
+ulong bootp_timeout;
#if defined(CONFIG_CMD_DHCP)
-dhcp_state_t dhcp_state = INIT;
-unsigned long dhcp_leasetime;
-IPaddr_t NetDHCPServerIP;
+static dhcp_state_t dhcp_state = INIT;
+static unsigned long dhcp_leasetime;
+static IPaddr_t NetDHCPServerIP;
static void DhcpHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
unsigned len);
#endif
#endif
+static void bootp_add_id(ulong id)
+{
+ if (bootp_num_ids >= ARRAY_SIZE(bootp_ids)) {
+ size_t size = sizeof(bootp_ids) - sizeof(id);
+
+ memmove(bootp_ids, &bootp_ids[1], size);
+ bootp_ids[bootp_num_ids - 1] = id;
+ } else {
+ bootp_ids[bootp_num_ids] = id;
+ bootp_num_ids++;
+ }
+}
+
+static bool bootp_match_id(ulong id)
+{
+ unsigned int i;
+
+ for (i = 0; i < bootp_num_ids; i++)
+ if (bootp_ids[i] == id)
+ return true;
+
+ return false;
+}
+
static int BootpCheckPkt(uchar *pkt, unsigned dest, unsigned src, unsigned len)
{
struct Bootp_t *bp = (struct Bootp_t *) pkt;
retval = -4;
else if (bp->bp_hlen != HWL_ETHER)
retval = -5;
- else if (NetReadLong((ulong *)&bp->bp_id) != BootpID)
+ else if (!bootp_match_id(NetReadLong((ulong *)&bp->bp_id)))
retval = -6;
debug("Filtering pkt = %d\n", retval);
static void
BootpTimeout(void)
{
- if (BootpTry >= TIMEOUT_COUNT) {
+ ulong time_taken = get_timer(bootp_start);
+
+ if (time_taken >= TIMEOUT_MS) {
#ifdef CONFIG_BOOTP_MAY_FAIL
- puts("\nRetry count exceeded\n");
+ puts("\nRetry time exceeded\n");
net_set_state(NETLOOP_FAIL);
#else
- puts("\nRetry count exceeded; starting again\n");
+ puts("\nRetry time exceeded; starting again\n");
NetStartAgain();
#endif
} else {
- NetSetTimeout(TIMEOUT, BootpTimeout);
+ bootp_timeout *= 2;
+ if (bootp_timeout > 2000)
+ bootp_timeout = 2000;
+ NetSetTimeout(bootp_timeout, BootpTimeout);
BootpRequest();
}
}
+#define put_vci(e, str) \
+ do { \
+ size_t vci_strlen = strlen(str); \
+ *e++ = 60; /* Vendor Class Identifier */ \
+ *e++ = vci_strlen; \
+ memcpy(e, str, vci_strlen); \
+ e += vci_strlen; \
+ } while (0)
+
/*
* Initialize BOOTP extension fields in the request.
*/
u8 *cnt;
#if defined(CONFIG_BOOTP_PXE)
char *uuid;
- size_t vci_strlen;
u16 clientarch;
#endif
*e++ = 17;
*e++ = 0; /* type 0 - UUID */
- uuid_str_to_bin(uuid, e);
+ uuid_str_to_bin(uuid, e, UUID_STR_FORMAT_STD);
e += 16;
} else {
printf("Invalid pxeuuid: %s\n", uuid);
}
}
+#endif
- *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;
+#ifdef CONFIG_BOOTP_VCI_STRING
+ put_vci(e, CONFIG_BOOTP_VCI_STRING);
#endif
#if defined(CONFIG_BOOTP_VENDOREX)
*e++ = (576 - 312 + OPT_FIELD_SIZE) & 0xff;
#endif
+#if defined(CONFIG_BOOTP_VCI_STRING) || \
+ (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_NET_VCI_STRING))
+#ifdef CONFIG_SPL_BUILD
+ put_vci(e, CONFIG_SPL_NET_VCI_STRING);
+#else
+ put_vci(e, CONFIG_BOOTP_VCI_STRING);
+#endif
+#endif
+
#if defined(CONFIG_BOOTP_SUBNETMASK)
*e++ = 1; /* Subnet mask request */
*e++ = 4;
}
#endif
+void BootpReset(void)
+{
+ bootp_num_ids = 0;
+ BootpTry = 0;
+ bootp_start = get_timer(0);
+ bootp_timeout = 250;
+}
+
void
BootpRequest(void)
{
int extlen, pktlen, iplen;
int eth_hdr_size;
#ifdef CONFIG_BOOTP_RANDOM_DELAY
- ulong i, rand_ms;
+ ulong rand_ms;
#endif
+ ulong BootpID;
bootstage_mark_name(BOOTSTAGE_ID_BOOTP_START, "bootp_start");
#if defined(CONFIG_CMD_DHCP)
rand_ms = rand() >> 19;
printf("Random delay: %ld ms...\n", rand_ms);
- for (i = 0; i < rand_ms; i++)
- udelay(1000); /*Wait 1ms*/
+ mdelay(rand_ms);
#endif /* CONFIG_BOOTP_RANDOM_DELAY */
| ((ulong)NetOurEther[4] << 8)
| (ulong)NetOurEther[5];
BootpID += get_timer(0);
- BootpID = htonl(BootpID);
+ BootpID = htonl(BootpID);
+ bootp_add_id(BootpID);
NetCopyLong(&bp->bp_id, &BootpID);
/*
iplen = BOOTP_HDR_SIZE - OPT_FIELD_SIZE + extlen;
pktlen = eth_hdr_size + IP_UDP_HDR_SIZE + iplen;
net_set_udp_header(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
- NetSetTimeout(SELECT_TIMEOUT, BootpTimeout);
+ NetSetTimeout(bootp_timeout, BootpTimeout);
#if defined(CONFIG_CMD_DHCP)
dhcp_state = SELECTING;
htonl(BOOTP_VENDOR_MAGIC))
DhcpOptionsProcess((u8 *)&bp->bp_vend[4], bp);
- NetSetTimeout(TIMEOUT, BootpTimeout);
+ NetSetTimeout(5000, BootpTimeout);
DhcpSendRequestPkt(bp);
#ifdef CONFIG_SYS_BOOTFILE_PREFIX
}
/* Store net params from reply */
BootpCopyNetParams(bp);
dhcp_state = BOUND;
- printf("DHCP client bound to address %pI4\n",
- &NetOurIP);
+ printf("DHCP client bound to address %pI4 (%lu ms)\n",
+ &NetOurIP, get_timer(bootp_start));
bootstage_mark_name(BOOTSTAGE_ID_BOOTP_STOP,
"bootp_stop");
projects / karo-tx-uboot.git / blobdiff