diff options
Diffstat (limited to 'lib/lufa/Projects/Webserver/Lib/uip/uip-split.c')
| -rw-r--r-- | lib/lufa/Projects/Webserver/Lib/uip/uip-split.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/lib/lufa/Projects/Webserver/Lib/uip/uip-split.c b/lib/lufa/Projects/Webserver/Lib/uip/uip-split.c deleted file mode 100644 index 5222a05b63..0000000000 --- a/lib/lufa/Projects/Webserver/Lib/uip/uip-split.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * 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 Contiki operating system. - * - * Author: Adam Dunkels <adam@sics.se> - * - * $Id: uip-split.c,v 1.2 2008/10/14 13:39:12 julienabeille Exp $ - */ - -#include "uip-split.h" - - -#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN]) - -/*-----------------------------------------------------------------------------*/ -void -uip_split_output(void) -{ -#if UIP_TCP - u16_t tcplen, len1, len2; - - /* We only try to split maximum sized TCP segments. */ - if(BUF->proto == UIP_PROTO_TCP && uip_len == UIP_BUFSIZE) { - - tcplen = uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN; - /* 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 + UIP_LLH_LEN; -#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 - UIP_LLH_LEN) >> 8; - BUF->len[1] = (uip_len - UIP_LLH_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. */ -#if UIP_CONF_IPV6 - tcpip_ipv6_output(); -#else - if (USB_CurrentMode == USB_MODE_Device) - RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len); - else - RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len); -#endif /* UIP_CONF_IPV6 */ - - /* 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 determined by the length of the first - packet (len1). */ - uip_len = len2 + UIP_TCPIP_HLEN + UIP_LLH_LEN; -#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 - UIP_LLH_LEN) >> 8; - BUF->len[1] = (uip_len - UIP_LLH_LEN) & 0xff; -#endif /* UIP_CONF_IPV6 */ - - 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. */ -#if UIP_CONF_IPV6 - tcpip_ipv6_output(); -#else - if (USB_CurrentMode == USB_MODE_Device) - RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len); - else - RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len); -#endif /* UIP_CONF_IPV6 */ - return; - } -#endif /* UIP_TCP */ - - /* uip_fw_output();*/ -#if UIP_CONF_IPV6 - tcpip_ipv6_output(); -#else - if (USB_CurrentMode == USB_MODE_Device) - RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len); - else - RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len); -#endif /* UIP_CONF_IPV6 */ -} - -/*-----------------------------------------------------------------------------*/ - |