diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/nds/dswifi/arm9/source/sgIP_IP.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/nds/dswifi/arm9/source/sgIP_IP.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/c/src/lib/libbsp/arm/nds/dswifi/arm9/source/sgIP_IP.c b/c/src/lib/libbsp/arm/nds/dswifi/arm9/source/sgIP_IP.c deleted file mode 100644 index d145ba4d92..0000000000 --- a/c/src/lib/libbsp/arm/nds/dswifi/arm9/source/sgIP_IP.c +++ /dev/null @@ -1,124 +0,0 @@ -// DSWifi Project - sgIP Internet Protocol Stack Implementation -// Copyright (C) 2005-2006 Stephen Stair - sgstair@akkit.org - http://www.akkit.org -/****************************************************************************** -DSWifi Lib and test materials are licenced under the MIT open source licence: -Copyright (c) 2005-2006 Stephen Stair - -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. -******************************************************************************/ - -#include "sgIP_IP.h" -#include "sgIP_TCP.h" -#include "sgIP_UDP.h" -#include "sgIP_ICMP.h" -#include "sgIP_Hub.h" - -int idnum_count; - -int sgIP_IP_ReceivePacket(sgIP_memblock * mb) { - sgIP_Header_IP * iphdr; - unsigned short * chksum_calc; - int chksum_temp; - int hdrlen; - - iphdr=(sgIP_Header_IP *)mb->datastart; - chksum_calc=(unsigned short *)mb->datastart; - // check that header is valid: - hdrlen=iphdr->version_ihl&15; - // check length... - if(mb->totallength<htons(iphdr->tot_length)) { - SGIP_DEBUG_MESSAGE(("IP: bad length!")); - SGIP_DEBUG_MESSAGE(("-%i/%i",mb->totallength,htons(iphdr->tot_length))); - sgIP_memblock_free(mb); - return 0; // bad size. - } - sgIP_memblock_trimsize(mb,htons(iphdr->tot_length)); - // check version - if((iphdr->version_ihl>>4)!=4) { - SGIP_DEBUG_MESSAGE(("IP: bad version!")); - sgIP_memblock_free(mb); - return 0; // bad version. - } - - // check checksum - chksum_temp=sgIP_memblock_IPChecksum(mb,0,hdrlen*4); - if(chksum_temp!=0xFFFF) { // bad chksum! kill packet. - SGIP_DEBUG_MESSAGE(("IP: bad checksum!")); - sgIP_memblock_free(mb); - return 0; // bad checksum. - } - if(htons(iphdr->fragment_offset)&0x3FFF) { // fragmented! oh noes! We can't deal with this! - SGIP_DEBUG_MESSAGE(("IP: fragmented!")); - sgIP_memblock_free(mb); - return 0; // fragmented. - } - - sgIP_memblock_exposeheader(mb,-hdrlen*4); - switch(iphdr->protocol) { - case PROTOCOL_IP_ICMP: // ICMP - sgIP_ICMP_ReceivePacket(mb,iphdr->src_address,iphdr->dest_address); - break; - case PROTOCOL_IP_TCP: // TCP - sgIP_TCP_ReceivePacket(mb,iphdr->src_address,iphdr->dest_address); - break; - case PROTOCOL_IP_UDP: // UDP - sgIP_UDP_ReceivePacket(mb,iphdr->src_address,iphdr->dest_address); - break; - default: - sgIP_memblock_free(mb); - } - - return 0; -} -int sgIP_IP_MaxContentsSize(unsigned long destip) { - return sgIP_Hub_IPMaxMessageSize(destip)-sgIP_IP_RequiredHeaderSize(); -} -int sgIP_IP_RequiredHeaderSize() { - return 5*4; // we'll not include zeroed options. -} -int sgIP_IP_SendViaIP(sgIP_memblock * mb, int protocol, unsigned long srcip, unsigned long destip) { - sgIP_Header_IP * iphdr; - unsigned short * chksum_calc; - int chksum_temp,i; - sgIP_memblock_exposeheader(mb,20); - iphdr=(sgIP_Header_IP *)mb->datastart; - chksum_calc=(unsigned short *)mb->datastart; - iphdr->dest_address=destip; - iphdr->fragment_offset=0; - iphdr->header_checksum=0; - iphdr->identification=idnum_count++; - iphdr->protocol=protocol; - iphdr->src_address=srcip; - iphdr->tot_length=htons(mb->totallength); - iphdr->TTL=SGIP_IP_TTL; - iphdr->type_of_service=0; - iphdr->version_ihl=0x45; - chksum_temp=0; - for(i=0;i<10;i++) chksum_temp+=chksum_calc[i]; - chksum_temp += chksum_temp>>16; - chksum_temp &= 0xFFFF; - chksum_temp = ~chksum_temp; - if(chksum_temp==0) chksum_temp=0xFFFF; - iphdr->header_checksum=chksum_temp; - return sgIP_Hub_SendProtocolPacket(htons(0x0800),mb,destip,srcip); -} -unsigned long sgIP_IP_GetLocalBindAddr(unsigned long srcip, unsigned long destip) { - if(srcip) return srcip; - return sgIP_Hub_GetCompatibleIP(destip); -} |