To avoid extra logic in code that creates net_buf fragment lists, make
it possible to pass a NULL pointer as the head net_buf when there are
no previous buffers. Before this change the code would look like this:
if (head) {
net_buf_frag_add(head, buf);
} else {
head = net_buf_ref(buf);
}
After the patch the code can simply do:
head = net_buf_frag_add(head, buf);
This will then do the right thing regardless if head is NULL or
non-NULL.
Change-Id: I300394242e2e243ed3839b25629ec816dd98c148
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
27fc467e74