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 5222a05b6..000000000 --- a/lib/lufa/Projects/Webserver/Lib/uip/uip-split.c +++ /dev/null | |||
| @@ -1,151 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 2004, Swedish Institute of Computer Science. | ||
| 3 | * All rights reserved. | ||
| 4 | * | ||
| 5 | * Redistribution and use in source and binary forms, with or without | ||
| 6 | * modification, are permitted provided that the following conditions | ||
| 7 | * are met: | ||
| 8 | * 1. Redistributions of source code must retain the above copyright | ||
| 9 | * notice, this list of conditions and the following disclaimer. | ||
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | ||
| 11 | * notice, this list of conditions and the following disclaimer in the | ||
| 12 | * documentation and/or other materials provided with the distribution. | ||
| 13 | * 3. Neither the name of the Institute nor the names of its contributors | ||
| 14 | * may be used to endorse or promote products derived from this software | ||
| 15 | * without specific prior written permission. | ||
| 16 | * | ||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND | ||
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE | ||
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
| 27 | * SUCH DAMAGE. | ||
| 28 | * | ||
| 29 | * This file is part of the Contiki operating system. | ||
| 30 | * | ||
| 31 | * Author: Adam Dunkels <adam@sics.se> | ||
| 32 | * | ||
| 33 | * $Id: uip-split.c,v 1.2 2008/10/14 13:39:12 julienabeille Exp $ | ||
| 34 | */ | ||
| 35 | |||
| 36 | #include "uip-split.h" | ||
| 37 | |||
| 38 | |||
| 39 | #define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN]) | ||
| 40 | |||
| 41 | /*-----------------------------------------------------------------------------*/ | ||
| 42 | void | ||
| 43 | uip_split_output(void) | ||
| 44 | { | ||
| 45 | #if UIP_TCP | ||
| 46 | u16_t tcplen, len1, len2; | ||
| 47 | |||
| 48 | /* We only try to split maximum sized TCP segments. */ | ||
| 49 | if(BUF->proto == UIP_PROTO_TCP && uip_len == UIP_BUFSIZE) { | ||
| 50 | |||
| 51 | tcplen = uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN; | ||
| 52 | /* Split the segment in two. If the original packet length was | ||
| 53 | odd, we make the second packet one byte larger. */ | ||
| 54 | len1 = len2 = tcplen / 2; | ||
| 55 | if(len1 + len2 < tcplen) { | ||
| 56 | ++len2; | ||
| 57 | } | ||
| 58 | |||
| 59 | /* Create the first packet. This is done by altering the length | ||
| 60 | field of the IP header and updating the checksums. */ | ||
| 61 | uip_len = len1 + UIP_TCPIP_HLEN + UIP_LLH_LEN; | ||
| 62 | #if UIP_CONF_IPV6 | ||
| 63 | /* For IPv6, the IP length field does not include the IPv6 IP header | ||
| 64 | length. */ | ||
| 65 | BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8); | ||
| 66 | BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff); | ||
| 67 | #else /* UIP_CONF_IPV6 */ | ||
| 68 | BUF->len[0] = (uip_len - UIP_LLH_LEN) >> 8; | ||
| 69 | BUF->len[1] = (uip_len - UIP_LLH_LEN) & 0xff; | ||
| 70 | #endif /* UIP_CONF_IPV6 */ | ||
| 71 | |||
| 72 | /* Recalculate the TCP checksum. */ | ||
| 73 | BUF->tcpchksum = 0; | ||
| 74 | BUF->tcpchksum = ~(uip_tcpchksum()); | ||
| 75 | |||
| 76 | #if !UIP_CONF_IPV6 | ||
| 77 | /* Recalculate the IP checksum. */ | ||
| 78 | BUF->ipchksum = 0; | ||
| 79 | BUF->ipchksum = ~(uip_ipchksum()); | ||
| 80 | #endif /* UIP_CONF_IPV6 */ | ||
| 81 | |||
| 82 | /* Transmit the first packet. */ | ||
| 83 | #if UIP_CONF_IPV6 | ||
| 84 | tcpip_ipv6_output(); | ||
| 85 | #else | ||
| 86 | if (USB_CurrentMode == USB_MODE_Device) | ||
| 87 | RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len); | ||
| 88 | else | ||
| 89 | RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len); | ||
| 90 | #endif /* UIP_CONF_IPV6 */ | ||
| 91 | |||
| 92 | /* Now, create the second packet. To do this, it is not enough to | ||
| 93 | just alter the length field, but we must also update the TCP | ||
| 94 | sequence number and point the uip_appdata to a new place in | ||
| 95 | memory. This place is determined by the length of the first | ||
| 96 | packet (len1). */ | ||
| 97 | uip_len = len2 + UIP_TCPIP_HLEN + UIP_LLH_LEN; | ||
| 98 | #if UIP_CONF_IPV6 | ||
| 99 | /* For IPv6, the IP length field does not include the IPv6 IP header | ||
| 100 | length. */ | ||
| 101 | BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8); | ||
| 102 | BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff); | ||
| 103 | #else /* UIP_CONF_IPV6 */ | ||
| 104 | BUF->len[0] = (uip_len - UIP_LLH_LEN) >> 8; | ||
| 105 | BUF->len[1] = (uip_len - UIP_LLH_LEN) & 0xff; | ||
| 106 | #endif /* UIP_CONF_IPV6 */ | ||
| 107 | |||
| 108 | memcpy(uip_appdata, (u8_t *)uip_appdata + len1, len2); | ||
| 109 | |||
| 110 | uip_add32(BUF->seqno, len1); | ||
| 111 | BUF->seqno[0] = uip_acc32[0]; | ||
| 112 | BUF->seqno[1] = uip_acc32[1]; | ||
| 113 | BUF->seqno[2] = uip_acc32[2]; | ||
| 114 | BUF->seqno[3] = uip_acc32[3]; | ||
| 115 | |||
| 116 | /* Recalculate the TCP checksum. */ | ||
| 117 | BUF->tcpchksum = 0; | ||
| 118 | BUF->tcpchksum = ~(uip_tcpchksum()); | ||
| 119 | |||
| 120 | #if !UIP_CONF_IPV6 | ||
| 121 | /* Recalculate the IP checksum. */ | ||
| 122 | BUF->ipchksum = 0; | ||
| 123 | BUF->ipchksum = ~(uip_ipchksum()); | ||
| 124 | #endif /* UIP_CONF_IPV6 */ | ||
| 125 | |||
| 126 | /* Transmit the second packet. */ | ||
| 127 | #if UIP_CONF_IPV6 | ||
| 128 | tcpip_ipv6_output(); | ||
| 129 | #else | ||
| 130 | if (USB_CurrentMode == USB_MODE_Device) | ||
| 131 | RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len); | ||
| 132 | else | ||
| 133 | RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len); | ||
| 134 | #endif /* UIP_CONF_IPV6 */ | ||
| 135 | return; | ||
| 136 | } | ||
| 137 | #endif /* UIP_TCP */ | ||
| 138 | |||
| 139 | /* uip_fw_output();*/ | ||
| 140 | #if UIP_CONF_IPV6 | ||
| 141 | tcpip_ipv6_output(); | ||
| 142 | #else | ||
| 143 | if (USB_CurrentMode == USB_MODE_Device) | ||
| 144 | RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface_Device, uip_buf, uip_len); | ||
| 145 | else | ||
| 146 | RNDIS_Host_SendPacket(&Ethernet_RNDIS_Interface_Host, uip_buf, uip_len); | ||
| 147 | #endif /* UIP_CONF_IPV6 */ | ||
| 148 | } | ||
| 149 | |||
| 150 | /*-----------------------------------------------------------------------------*/ | ||
| 151 | |||
