On Sun, Jan 22, 2012 at 8:14 PM, Sukrit Sangwan [off-list ref] wrote:

There are instances in the code where sizeof(*ptr) is used. e.g.
in net/802/garp.c
? ? ? ? ? const struct garp_msg_hdr *gm;
? ? ? ? ? if (!pskb_may_pull(skb, sizeof(*gm)))
?return -1;
i want to ask is there any sense in using sizeof(struct garp_msg_hdr)
instead of sizeof(*gm) in the above example.

Imagine what would happen if you change the name of struct garp_msg_hdr;

thanks,
Daniel.