[lwip-devel] [bug #27352] Change ip_addr from struct to typedef (u32_t)

[Bill Auerbach]

Follow-up Comment #20, bug #27352 (project lwip):

The difference is copying to a new variable and then passing the variable
address of the variable.  What is the benefit in this versus just passing the
IP address in the first place?  Are you meaning something like:

struct ip_hdr *pHdr;
struct ip_addr ipAddr;

pHdr = (struct ip_hdr *) p->payload;
ipAddr = pHdr->src.addr;
someCallback(&ipAddr);

And I'm thinking:

pHdr = (struct ip_hdr *) p->payload;
someCallback(pHdr->src.addr);


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