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net: neigh: make ->hh_len 32-bit

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Using 16-bit ->hh_len doesn't save any memory, save some .text instead:

	add/remove: 0/0 grow/shrink: 1/6 up/down: 2/-19 (-17)
	function                                     old     new   delta
	neigh_update                                2312    2314      +2
	fwnet_header_cache                           199     197      -2
	eth_header_cache                             101      99      -2
	ip6_finish_output2                          2371    2368      -3
	vrf_finish_output6                          1522    1518      -4
	vrf_finish_output                           1413    1409      -4
	ip_finish_output2                           1627    1623      -4

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Dobriyan 2017-04-10 11:11:17 +03:00 • committed by David S. Miller
parent eaffadbbb3
commit 5b3dc2f37d
2 changed files with 3 additions and 4 deletions
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3
include/linux/netdevice.h
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@ -237,8 +237,7 @@ struct netdev_hw_addr_list {
netdev_hw_addr_list_for_each(ha, &(dev)->mc)
struct hh_cache {
u16 hh_len;
u16 __pad;
unsigned int hh_len;
seqlock_t hh_lock;
/* cached hardware header; allow for machine alignment needs. */