genetlink: Optimize and one bug fix in genl_generate_id()
1. GENL_MIN_ID is a valid id -> no need to start at GENL_MIN_ID + 1. 2. Avoid going through the ids two times: If we start at GENL_MIN_ID+1 (*or bigger*) and all ids are over!, the code iterates through the list twice (*or lesser*). 3. Simplify code - no need to start at idx=0 which gets reset to GENL_MIN_ID. Patch on net-next-2.6. Reboot test shows that first id passed to genl_register_family was 16, next two were GENL_ID_GENERATE and genl_generate_id returned 17 & 18 (user level testing of same code shows expected values across entire range of MIN/MAX). Signed-off-by: NKrishna Kumar <krkumar2@in.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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