TCPIP_IPV4_PacketFormatTx Function

C

void TCPIP_IPV4_PacketFormatTx(
    IPV4_PACKET* pPkt, 
    uint8_t protocol, 
    uint16_t ipLoadLen, 
    TCPIP_IPV4_PACKET_PARAMS* pParams
);

Description

The necessary fields are set into the IPv4 packet.

Preconditions

Properly allocated pPkt. The source and destination addresses should be updated in the packet. The network interface should be updated in the IPV4_PACKET.

Parameters


Parameters	Description
pPkt	The packet to be formatted.
protocol	The protocol associated with the packet.
ipLoadLen	The IPv4 packet payload length.
pParams	Pointer to a structure containing parameters for this packet. If NULL, then default values are used.

Returns

None.

Remarks

The segments should be properly updated with the right number of bytes ( segLen). The IP payload length (ipLoadLen) is added only to the 1st segment of the packet. Other segments (for packets having multiple packets) are not touched.