low_level_output() function

This function should do the actual transmission of the packet. The packet is contained in the pbuf that is passed to the function. This pbuf might be chained.

Syntax

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Summary

Declaration

from ethernetif.c:243

static err_t low_level_output(struct netif *netif, struct pbuf *p);

Arguments

Argument

Description

netif

the lwip network interface structure for this ethernetif

the MAC packet to send (e.g. IP packet including MAC addresses and type)

Return value

ERR_OK if the packet was sent, or ERR_IF if the packet was unable to be sent

Notes

ERR_OK means the packet was sent (but not necessarily transmit complete), and ERR_IF means the packet has more chained buffers than what the interface supports.

Examples

References

from examples

low_level_output() function

Syntax

Arguments

Return value

Notes

Examples

References

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