FreeCalypso > hg > fc-selenite
view src/g23m-fad/udp/udp_kerf.c @ 123:9582a626345c
rm doc/C155-target "won't support it" note
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 07 Nov 2018 09:16:23 +0000 |
parents | d393cd9bb723 |
children |
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/* +---------------------------------------------------------------------------- | Project : | Modul : +---------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +---------------------------------------------------------------------------- | Purpose : This Modul defines the functions for processing | of incomming primitives for the component | Internet Protocol of the mobile station +---------------------------------------------------------------------------- */ #define ENTITY_UDP #include <string.h> #include "typedefs.h" #include "pcm.h" #include "pconst.cdg" #include "mconst.cdg" #include "message.h" #include "ccdapi.h" #include "vsi.h" #include "macdef.h" /* to get PFREE_DESC2 */ #include "custom.h" #include "gsm.h" #include "prim.h" #include "cus_udp.h" #include "cnf_udp.h" #include "mon_udp.h" #include "pei.h" #include "tok.h" #include "dti.h" /* to get dti lib */ #include "udp.h" #include "ip_udp.h" /* +--------------------------------------------------------------------+ | PROJECT : WAP MODULE : udp_kerf.c | | STATE : code ROUTINE : init_udp | +--------------------------------------------------------------------+ PURPOSE : Init the global variables of UDP */ void init_udp (void) { T_HILA * p_ul; T_LOLA * p_dl; T_KER * p_ker = & udp_data->ker; /* Set global variables for every entity */ INIT_STATE (HILA, DOWN); INIT_STATE (LOLA, DOWN); p_ul = & udp_data->hila; *p_ul->entity_name = 0; p_ul->dti_state = DTI_CLOSED; p_ul->dti_data_req = NULL; p_dl = & udp_data->lola; *p_dl->entity_name = 0; p_dl->dti_state = DTI_CLOSED; p_dl->dti_data_ind = NULL; p_dl->drop_packet = FALSE; p_dl->state_err = STATE_DL_NO_ERROR; p_dl->src_addr = NO_ADDR; p_dl->dst_addr = NO_ADDR; p_dl->dst_port = NO_PORT; p_dl->src_port = NO_PORT; /* Downlink and uplink for one entity */ p_ker->send_icmp = FALSE; p_ker->port_state = PORT_DOWN; p_ker->dti_data_req_icmp = NULL; p_ker->dst_addr = NO_ADDR; p_ker->src_addr = NO_ADDR; p_ker->src_port = NO_PORT; p_ker->dst_port = NO_PORT; } /* +--------------------------------------------------------------------+ | PROJECT : WAP MODULE : udp_kerf.c | | STATE : code ROUTINE : udp_build_packet | +--------------------------------------------------------------------+ PURPOSE : Build UDP and ICMP packets to send */ void udp_build_packet (BOOL hila, UBYTE to_do) { T_KER * p_ker = & udp_data->ker; if (hila) /* Build the packets for higher layer */ { switch (to_do) { case B_NORMAL_PACKET: { T_desc_list2 * desc_list = & udp_data->hila.dti_data_req->desc_list2; T_desc2 * desc = (T_desc2 *) desc_list->first; USHORT udp_payload_len = desc_list->list_len; if (desc == NULL) { TRACE_ERROR ("Hila's desc == NULL in udp_build_packet()."); return; } else { /* Make a new desc for the IP and UDP packet header */ USHORT headroom = LEN_IP_HEADER_B + LEN_UDP_HEADER_B; UBYTE * ip_header; T_desc2 * desc_new = M_ALLOC (offsetof (T_desc2, buffer) + headroom); if (desc_new == NULL) { TRACE_ERROR ("Not enough memory in udp_build_packet()."); return; } desc_new->next = (ULONG) desc; desc_new->offset = 0; desc_new->len = headroom; desc_new->size = headroom; ip_header = desc_new->buffer; { register unsigned i; for (i=0; i < headroom; i++) ip_header[i] = '\0';/*lint !e661 !e662 (Warning -- access/creation of out-of-bounds pointer) */ } /* Put the desc at the first place of the descs and * build the UDP header */ desc_list->first = (ULONG) desc_new; desc_list->list_len = (USHORT) (desc_new->len + desc_list->list_len); /* Fill in IP header information */ SET_IP_VERSION (ip_header, IP_VERSION); SET_IP_HEADER_LEN (ip_header, MIN_HEADER_LEN); /*lint -e{661, 662} (Warning -- access/creation of out-of-bounds pointer) */ { SET_IP_TOTAL_LEN (ip_header, desc_list->list_len); SET_IP_PROT (ip_header, UDP_PROT); SET_IP_SOURCE_ADDR (ip_header, p_ker->src_addr); SET_IP_DEST_ADDR (ip_header, p_ker->dst_addr); SET_UDP_SRC_PORT (ip_header, p_ker->src_port); SET_UDP_DST_PORT (ip_header, p_ker->dst_port); SET_UDP_LEN (ip_header, udp_payload_len + LEN_UDP_HEADER_B); } { UBYTE pseudo_header [LEN_PSEUDO_HEADER_B]; ULONG overlay; USHORT chksum; /* Build the pseudoheader for to calculate the chksum */ SET_UDP_PSEUDO_H_SRC_ADDR (pseudo_header, p_ker->src_addr); SET_UDP_PSEUDO_H_DEST_ADDR (pseudo_header, p_ker->dst_addr); SET_UDP_PSEUDO_H_ZERO (pseudo_header, 0); SET_UDP_PSEUDO_H_PROT (pseudo_header, UDP_PROT); SET_UDP_PSEUDO_H_LEN (pseudo_header, udp_payload_len + LEN_UDP_HEADER_B); /* Calculate the checksum for the pseudoheader */ overlay = partial_checksum (pseudo_header, LEN_PSEUDO_HEADER_B); /* Calculate for the UDP header and the data */ RESET_UDP_CHKSUM (ip_header, LEN_IP_HEADER_B);/*lint !e661 !e662 (Warning -- access/creation of out-of-bounds pointer) */ chksum = desc_checksum (desc_list, LEN_IP_HEADER_B, overlay); SET_UDP_CHKSUM (ip_header, LEN_IP_HEADER_B, chksum);/*lint !e661 !e662 (Warning -- access/creation of out-of-bounds pointer) */ } } } break; default: break; } } else /* Build the packets for lower layer */ { T_LOLA * p_dl = & udp_data->lola; T_desc_list2 * desc_list = & p_dl->dti_data_ind->desc_list2; T_desc2 * desc = (T_desc2 *) desc_list->first; if (desc == NULL) { TRACE_ERROR ("Lola's desc == NULL in udp_build_packet()."); return; } if (desc->len < LEN_IP_HEADER_B) { TRACE_ERROR ( "Lola's desc->len < LEN_IP_HEADER_B " "in udp_build_packet()." ); return; } if (GET_IP_HEADER_LEN_B (desc->buffer + desc->offset) < LEN_IP_HEADER_B) { TRACE_ERROR ( "Lola's GET_IP_HEADER_LEN_B() < LEN_IP_HEADER_B " "in udp_build_packet()." ); return; } switch (to_do) { case B_NORMAL_PACKET: { /* Build a new desc for IP addresses and port numbers */ T_desc2 * addr = M_ALLOC ( offsetof (T_desc2, buffer) + sizeof (T_SRC_DES) ); if (addr == NULL) { TRACE_ERROR ("Not enough memory in udp_build_packet()."); return; } addr->next = (ULONG) desc; addr->offset = 0; addr->len = sizeof (T_SRC_DES); addr->size = sizeof (T_SRC_DES); memcpy (((T_SRC_DES *) addr->buffer)->src_ip, & p_dl->src_addr, 4); memcpy (((T_SRC_DES *) addr->buffer)->des_ip, & p_dl->dst_addr, 4); memcpy (((T_SRC_DES *) addr->buffer)->src_port, & p_dl->src_port, 2); memcpy (((T_SRC_DES *) addr->buffer)->des_port, & p_dl->dst_port, 2); desc_list->first = (ULONG) addr; desc_list->list_len = (USHORT) (addr->len + desc_list->list_len); /* Filter out the given IP and UDP header */ { register unsigned headroom = GET_IP_HEADER_LEN_B (desc->buffer + desc->offset) + LEN_UDP_HEADER_B; if (desc->len < headroom) { TRACE_ERROR ("Lola's IP packet is short in udp_build_packet()."); return; } memmove ( desc->buffer + desc->offset, desc->buffer + desc->offset + headroom, desc->len - headroom ); desc->len = (USHORT) (desc->len - headroom); desc_list->list_len = (USHORT) (desc_list->list_len - headroom); } } break; case B_NO_DEST_PORT: { /* We build the whole ICMP packet */ PPASS (p_dl->dti_data_ind, data_req, DTI2_DATA_REQ); desc_list = & data_req->desc_list2; desc = (T_desc2 *) desc_list->first; build_icmp_with_payload ( data_req, IDENTITY_0, STANDARD_TTL, GET_IP_DEST_ADDR (desc->buffer + desc->offset), ICMP_TYP_DEST_URECHBL, ICMP_CODE_NO_PORT ); p_ker->dti_data_req_icmp = data_req; } break; default: break; } } } /*-------------------------------------------------------------------------*/