-/*
- * Copyright (c) 2004, Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * This file is part of the uIP TCP/IP stack
- *
- * Author: Adam Dunkels <adam@sics.se>
- *
- * $Id: uip-split.c,v 1.2 2006/06/12 08:00:30 adam Exp $
- */
-
-#include <string.h>
-
-#include "uip-split.h"
-#include "uip.h"
-#include "uip-fw.h"
-#include "uip_arch.h"
-
-
-
-#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
-
-/*-----------------------------------------------------------------------------*/
-void
-uip_split_output(void)
-{
- u16_t tcplen, len1, len2;
-
- /* We only try to split maximum sized TCP segments. */
- if(BUF->proto == UIP_PROTO_TCP &&
- uip_len == UIP_BUFSIZE - UIP_LLH_LEN) {
-
- tcplen = uip_len - UIP_TCPIP_HLEN;
- /* Split the segment in two. If the original packet length was
- odd, we make the second packet one byte larger. */
- len1 = len2 = tcplen / 2;
- if(len1 + len2 < tcplen) {
- ++len2;
- }
-
- /* Create the first packet. This is done by altering the length
- field of the IP header and updating the checksums. */
- uip_len = len1 + UIP_TCPIP_HLEN;
-#if UIP_CONF_IPV6
- /* For IPv6, the IP length field does not include the IPv6 IP header
- length. */
- BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8);
- BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff);
-#else /* UIP_CONF_IPV6 */
- BUF->len[0] = uip_len >> 8;
- BUF->len[1] = uip_len & 0xff;
-#endif /* UIP_CONF_IPV6 */
-
- /* Recalculate the TCP checksum. */
- BUF->tcpchksum = 0;
- BUF->tcpchksum = ~(uip_tcpchksum());
-
-#if !UIP_CONF_IPV6
- /* Recalculate the IP checksum. */
- BUF->ipchksum = 0;
- BUF->ipchksum = ~(uip_ipchksum());
-#endif /* UIP_CONF_IPV6 */
-
- /* Transmit the first packet. */
- /* uip_fw_output();*/
- tcpip_output();
-
- /* Now, create the second packet. To do this, it is not enough to
- just alter the length field, but we must also update the TCP
- sequence number and point the uip_appdata to a new place in
- memory. This place is detemined by the length of the first
- packet (len1). */
- uip_len = len2 + UIP_TCPIP_HLEN;
-#if UIP_CONF_IPV6
- /* For IPv6, the IP length field does not include the IPv6 IP header
- length. */
- BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8);
- BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff);
-#else /* UIP_CONF_IPV6 */
- BUF->len[0] = uip_len >> 8;
- BUF->len[1] = uip_len & 0xff;
-#endif /* UIP_CONF_IPV6 */
-
- /* uip_appdata += len1;*/
- memcpy(uip_appdata, (u8_t *)uip_appdata + len1, len2);
-
- uip_add32(BUF->seqno, len1);
- BUF->seqno[0] = uip_acc32[0];
- BUF->seqno[1] = uip_acc32[1];
- BUF->seqno[2] = uip_acc32[2];
- BUF->seqno[3] = uip_acc32[3];
-
- /* Recalculate the TCP checksum. */
- BUF->tcpchksum = 0;
- BUF->tcpchksum = ~(uip_tcpchksum());
-
-#if !UIP_CONF_IPV6
- /* Recalculate the IP checksum. */
- BUF->ipchksum = 0;
- BUF->ipchksum = ~(uip_ipchksum());
-#endif /* UIP_CONF_IPV6 */
-
- /* Transmit the second packet. */
- /* uip_fw_output();*/
- tcpip_output();
- } else {
- /* uip_fw_output();*/
- tcpip_output();
- }
-
-}
-/*-----------------------------------------------------------------------------*/
+/*\r
+ * Copyright (c) 2004, Swedish Institute of Computer Science.\r
+ * All rights reserved.\r
+ *\r
+ * Redistribution and use in source and binary forms, with or without\r
+ * modification, are permitted provided that the following conditions\r
+ * are met:\r
+ * 1. Redistributions of source code must retain the above copyright\r
+ * notice, this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright\r
+ * notice, this list of conditions and the following disclaimer in the\r
+ * documentation and/or other materials provided with the distribution.\r
+ * 3. Neither the name of the Institute nor the names of its contributors\r
+ * may be used to endorse or promote products derived from this software\r
+ * without specific prior written permission.\r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND\r
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE\r
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
+ * SUCH DAMAGE.\r
+ *\r
+ * This file is part of the Contiki operating system.\r
+ *\r
+ * Author: Adam Dunkels <adam@sics.se>\r
+ *\r
+ * $Id: uip-split.c,v 1.2 2008/10/14 13:39:12 julienabeille Exp $\r
+ */\r
+\r
+#include "uip-split.h"\r
+\r
+\r
+#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])\r
+\r
+/*-----------------------------------------------------------------------------*/\r
+void\r
+uip_split_output(void)\r
+{\r
+#if UIP_TCP\r
+ u16_t tcplen, len1, len2;\r
+\r
+ /* We only try to split maximum sized TCP segments. */\r
+ if(BUF->proto == UIP_PROTO_TCP && uip_len == UIP_BUFSIZE) {\r
+ \r
+ tcplen = uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN;\r
+ /* Split the segment in two. If the original packet length was\r
+ odd, we make the second packet one byte larger. */\r
+ len1 = len2 = tcplen / 2;\r
+ if(len1 + len2 < tcplen) {\r
+ ++len2;\r
+ }\r
+\r
+ /* Create the first packet. This is done by altering the length\r
+ field of the IP header and updating the checksums. */\r
+ uip_len = len1 + UIP_TCPIP_HLEN + UIP_LLH_LEN;\r
+#if UIP_CONF_IPV6\r
+ /* For IPv6, the IP length field does not include the IPv6 IP header\r
+ length. */\r
+ BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8);\r
+ BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff);\r
+#else /* UIP_CONF_IPV6 */\r
+ BUF->len[0] = (uip_len - UIP_LLH_LEN) >> 8;\r
+ BUF->len[1] = (uip_len - UIP_LLH_LEN) & 0xff;\r
+#endif /* UIP_CONF_IPV6 */\r
+ \r
+ /* Recalculate the TCP checksum. */\r
+ BUF->tcpchksum = 0;\r
+ BUF->tcpchksum = ~(uip_tcpchksum());\r
+\r
+#if !UIP_CONF_IPV6\r
+ /* Recalculate the IP checksum. */\r
+ BUF->ipchksum = 0;\r
+ BUF->ipchksum = ~(uip_ipchksum());\r
+#endif /* UIP_CONF_IPV6 */\r
+ \r
+ /* Transmit the first packet. */\r
+#if UIP_CONF_IPV6\r
+ tcpip_ipv6_output();\r
+#else\r
+ RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, uip_buf, uip_len);\r
+#endif /* UIP_CONF_IPV6 */\r
+ \r
+ /* Now, create the second packet. To do this, it is not enough to\r
+ just alter the length field, but we must also update the TCP\r
+ sequence number and point the uip_appdata to a new place in\r
+ memory. This place is detemined by the length of the first\r
+ packet (len1). */\r
+ uip_len = len2 + UIP_TCPIP_HLEN + UIP_LLH_LEN;\r
+#if UIP_CONF_IPV6\r
+ /* For IPv6, the IP length field does not include the IPv6 IP header\r
+ length. */\r
+ BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8);\r
+ BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff);\r
+#else /* UIP_CONF_IPV6 */\r
+ BUF->len[0] = (uip_len - UIP_LLH_LEN) >> 8;\r
+ BUF->len[1] = (uip_len - UIP_LLH_LEN) & 0xff;\r
+#endif /* UIP_CONF_IPV6 */\r
+ \r
+ memcpy(uip_appdata, (u8_t *)uip_appdata + len1, len2);\r
+\r
+ uip_add32(BUF->seqno, len1);\r
+ BUF->seqno[0] = uip_acc32[0];\r
+ BUF->seqno[1] = uip_acc32[1];\r
+ BUF->seqno[2] = uip_acc32[2];\r
+ BUF->seqno[3] = uip_acc32[3];\r
+ \r
+ /* Recalculate the TCP checksum. */\r
+ BUF->tcpchksum = 0;\r
+ BUF->tcpchksum = ~(uip_tcpchksum());\r
+\r
+#if !UIP_CONF_IPV6\r
+ /* Recalculate the IP checksum. */\r
+ BUF->ipchksum = 0;\r
+ BUF->ipchksum = ~(uip_ipchksum());\r
+#endif /* UIP_CONF_IPV6 */\r
+\r
+ /* Transmit the second packet. */\r
+#if UIP_CONF_IPV6\r
+ tcpip_ipv6_output();\r
+#else\r
+ RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, uip_buf, uip_len);\r
+#endif /* UIP_CONF_IPV6 */\r
+ return;\r
+ }\r
+#endif /* UIP_TCP */\r
+\r
+ /* uip_fw_output();*/\r
+#if UIP_CONF_IPV6\r
+ tcpip_ipv6_output();\r
+#else\r
+ RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface, uip_buf, uip_len);\r
+#endif /* UIP_CONF_IPV6 */\r
+}\r
+\r
+/*-----------------------------------------------------------------------------*/\r
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