[lwip-devel] Why use a struct for ip_addr?

[Chris Jones]

Can anyone give me a reason why a structure with a single 32 bit value is
used to handle IP addresses.

struct ip_addr {
  PACK_STRUCT_FIELD(u32_t addr);
} PACK_STRUCT_STRUCT;


In my port to the C55 DSP, I am using macros to access ALL elements of the
IP and TCP headers.
This struct 'ip_addr' is used in the definition of the IP header structuer
and then accessed directly in the code using macros from ip_addr.h.

I have had to change this design in order to use access macors for the
headers.

I see no reason why this ip_addr structure is used in the first place.


-Chris Jones
Engenium Technologies
www.engeniumtech.com