📄 net_ip.c
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*
* Note(s) : (2) NetIP_Tx() blocked until network initialization completes; perform NO action.
*
* (3) Network buffer already freed by lower layer; only increment error counter.
*********************************************************************************************************
*/
/*$PAGE*/
void NetIP_Tx (NET_BUF *pbuf,
NET_IP_ADDR addr_src,
NET_IP_ADDR addr_dest,
NET_IP_TOS TOS,
NET_IP_TTL TTL,
CPU_INT16U flags,
void *popts,
NET_ERR *perr)
{
#if (((NET_CTR_CFG_STAT_EN == DEF_ENABLED) || \
(NET_CTR_CFG_ERR_EN == DEF_ENABLED)) && \
(CPU_CFG_CRITICAL_METHOD == CPU_CRITICAL_METHOD_STATUS_LOCAL))
CPU_SR cpu_sr;
#endif
NET_BUF_HDR *pbuf_hdr;
#if (NET_ERR_CFG_ARG_CHK_EXT_EN == DEF_ENABLED)
if (Net_InitDone != DEF_YES) { /* If init NOT complete, exit tx (see Note #2). */
NetIP_TxPktDiscard(pbuf, perr);
*perr = NET_ERR_INIT_INCOMPLETE;
return;
}
#endif
#if (NET_ERR_CFG_ARG_CHK_DBG_EN == DEF_ENABLED)
/* ------------------- VALIDATE PTR ------------------- */
if (pbuf == (NET_BUF *)0) {
NetIP_TxPktDiscard(pbuf, perr);
NET_CTR_ERR_INC(NetIP_ErrNullPtrCtr);
return;
}
#endif
/* ---------------- VALIDATE TX IP PKT ---------------- */
pbuf_hdr = &pbuf->Hdr;
#if (NET_ERR_CFG_ARG_CHK_DBG_EN == DEF_ENABLED)
NetIP_TxPktValidate(pbuf,
pbuf_hdr,
addr_src,
addr_dest,
TOS,
TTL,
flags,
popts,
perr);
switch (*perr) {
case NET_IP_ERR_NONE:
break;
case NET_ERR_INVALID_PROTOCOL:
case NET_BUF_ERR_INVALID_IX:
case NET_IP_ERR_INVALID_LEN_DATA:
case NET_IP_ERR_INVALID_TOS:
case NET_IP_ERR_INVALID_ADDR_SRC:
case NET_IP_ERR_INVALID_ADDR_DEST:
case NET_IP_ERR_INVALID_FLAG:
case NET_IP_ERR_INVALID_OPT_TYPE:
case NET_IP_ERR_INVALID_OPT_LEN:
case NET_IP_ERR_INVALID_OPT_CFG:
case NET_IP_ERR_INVALID_OPT_ROUTE:
default:
NetIP_TxPktDiscard(pbuf, perr);
return; /* Prevent 'break NOT reachable' compiler warning. */
}
#endif
/*$PAGE*/
/* -------------------- TX IP PKT --------------------- */
NetIP_TxPkt(pbuf,
pbuf_hdr,
addr_src,
addr_dest,
TOS,
TTL,
flags,
popts,
perr);
/* ----------------- UPDATE TX STATS ------------------ */
switch (*perr) {
case NET_IP_ERR_NONE:
case NET_IF_ERR_NONE:
NET_CTR_STAT_INC(NetIP_StatTxDatagramCtr);
*perr = NET_IP_ERR_NONE;
break;
case NET_ERR_INIT_INCOMPLETE:
case NET_ERR_RX:
case NET_ERR_TX:
NET_CTR_ERR_INC(NetIP_ErrTxPktDiscardedCtr); /* See Note #3. */
*perr = NET_ERR_TX;
return; /* Prevent 'break NOT reachable' compiler warning. */
case NET_ERR_INVALID_PROTOCOL:
case NET_IP_ERR_INVALID_LEN_HDR:
case NET_IP_ERR_INVALID_FRAG:
case NET_IP_ERR_INVALID_OPT_TYPE:
case NET_IP_ERR_INVALID_OPT_LEN:
case NET_IP_ERR_TX_DEST_INVALID:
case NET_IP_ERR_INVALID_ADDR_HOST:
case NET_IP_ERR_INVALID_ADDR_NET:
case NET_IP_ERR_INVALID_ADDR_GATEWAY:
case NET_BUF_ERR_INVALID_IX:
case NET_BUF_ERR_INVALID_LEN:
case NET_UTIL_ERR_NULL_PTR:
case NET_UTIL_ERR_NULL_SIZE:
default:
NetIP_TxPktDiscard(pbuf, perr);
return; /* Prevent 'break NOT reachable' compiler warning. */
}
}
/*$PAGE*/
/*
*********************************************************************************************************
* NetIP_ReTx()
*
* Description : (1) Prepare & re-transmit packets from transport protocol layers to network interface layer :
*
* (a) Validate re-transmit packet
* (b) Prepare & re-transmit packet datagram
* (c) Update re-transmit statistics
*
*
* Argument(s) : pbuf Pointer to network buffer to re-transmit IP packet.
*
* perr Pointer to variable that will receive the return error code from this function :
*
* NET_IP_ERR_NONE IP datagram(s) successfully prepared & re-transmitted
* to network interface layer.
* NET_ERR_INIT_INCOMPLETE Network initialization NOT complete.
*
* -------- RETURNED BY NetIP_TxPktDiscard() : ---------
* NET_ERR_TX Transmit error; packet discarded.
*
* Return(s) : none.
*
* Caller(s) : NetTCP_TxConnReTxQ_Timeout().
*
* Note(s) : (2) NetIP_ReTx() blocked until network initialization completes; perform NO action.
*
* (3) Network buffer already freed by lower layer; only increment error counter.
*********************************************************************************************************
*/
/*$PAGE*/
void NetIP_ReTx (NET_BUF *pbuf,
NET_ERR *perr)
{
#if (((NET_CTR_CFG_STAT_EN == DEF_ENABLED) || \
(NET_CTR_CFG_ERR_EN == DEF_ENABLED)) && \
(CPU_CFG_CRITICAL_METHOD == CPU_CRITICAL_METHOD_STATUS_LOCAL))
CPU_SR cpu_sr;
#endif
NET_BUF_HDR *pbuf_hdr;
#if (NET_ERR_CFG_ARG_CHK_EXT_EN == DEF_ENABLED)
if (Net_InitDone != DEF_YES) { /* If init NOT complete, exit tx (see Note #2). */
NetIP_TxPktDiscard(pbuf, perr);
*perr = NET_ERR_INIT_INCOMPLETE;
return;
}
#endif
#if (NET_ERR_CFG_ARG_CHK_DBG_EN == DEF_ENABLED)
/* ------------------- VALIDATE PTR ------------------- */
if (pbuf == (NET_BUF *)0) {
NetIP_TxPktDiscard(pbuf, perr);
NET_CTR_ERR_INC(NetIP_ErrNullPtrCtr);
return;
}
#endif
/* -------------- VALIDATE RE-TX IP PKT --------------- */
pbuf_hdr = &pbuf->Hdr;
#if (NET_ERR_CFG_ARG_CHK_DBG_EN == DEF_ENABLED)
if (pbuf_hdr->IP_HdrIx == NET_BUF_IX_NONE) {
NetIP_TxPktDiscard(pbuf, perr);
NET_CTR_ERR_INC(NetIP_ErrTxInvalidBufIxCtr);
return;
}
#endif
/* ------------------- RE-TX IP PKT ------------------- */
NetIP_ReTxPkt(pbuf,
pbuf_hdr,
perr);
/* ---------------- UPDATE RE-TX STATS ---------------- */
switch (*perr) {
case NET_IP_ERR_NONE:
case NET_IF_ERR_NONE:
NET_CTR_STAT_INC(NetIP_StatTxDatagramCtr);
*perr = NET_IP_ERR_NONE;
break;
case NET_ERR_INIT_INCOMPLETE:
case NET_ERR_RX:
case NET_ERR_TX:
NET_CTR_ERR_INC(NetIP_ErrTxPktDiscardedCtr); /* See Note #3. */
*perr = NET_ERR_TX;
return; /* Prevent 'break NOT reachable' compiler warning. */
case NET_IP_ERR_TX_DEST_INVALID:
case NET_IP_ERR_INVALID_ADDR_HOST:
case NET_IP_ERR_INVALID_ADDR_NET:
case NET_IP_ERR_INVALID_ADDR_GATEWAY:
case NET_UTIL_ERR_NULL_PTR:
case NET_UTIL_ERR_NULL_SIZE:
default:
NetIP_TxPktDiscard(pbuf, perr);
return; /* Prevent 'break NOT reachable' compiler warning. */
}
}
/*$PAGE*/
/*
*********************************************************************************************************
*********************************************************************************************************
* LOCAL FUNCTIONS
*********************************************************************************************************
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* NetIP_RxPktValidateBuf()
*
* Description : Validate received buffer header as IP protocol.
*
* Argument(s) : pbuf_hdr Pointer to network buffer header that received IP packet.
* -------- Argument validated in NetIP_Rx().
*
* perr Pointer to variable that will receive the return error code from this function :
*
* NET_IP_ERR_NONE Received buffer's IP header validated.
* NET_ERR_INVALID_PROTOCOL Buffer's protocol type is NOT IP.
* NET_BUF_ERR_INVALID_IX Invalid buffer index.
*
* Return(s) : none.
*
* Caller(s) : NetIP_Rx().
*
* Note(s) : none.
*********************************************************************************************************
*/
#if (NET_ERR_CFG_ARG_CHK_DBG_EN == DEF_ENABLED)
static void NetIP_RxPktValidateBuf (NET_BUF_HDR *pbuf_hdr,
NET_ERR *perr)
{
#if ((NET_CTR_CFG_ERR_EN == DEF_ENABLED) && \
(CPU_CFG_CRITICAL_METHOD == CPU_CRITICAL_METHOD_STATUS_LOCAL))
CPU_SR cpu_sr;
#endif
/* ---------------- VALIDATE IP BUF HDR --------------- */
if (pbuf_hdr->ProtocolHdrType != NET_PROTOCOL_TYPE_IP) {
NET_CTR_ERR_INC(Net_ErrInvalidProtocolCtr);
*perr = NET_ERR_INVALID_PROTOCOL;
return;
}
if (pbuf_hdr->IP_HdrIx == NET_BUF_IX_NONE) {
NET_CTR_ERR_INC(NetIP_ErrRxInvalidBufIxCtr);
*perr = NET_BUF_ERR_INVALID_IX;
return;
}
*perr = NET_IP_ERR_NONE;
}
#endif
/*$PAGE*/
/*
*********************************************************************************************************
* NetIP_RxPktValidate()
*
* Description : (1) Validate⌨️ 快捷键说明
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