net: neigh: make ->hh_len 32-bit

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 9496179c7b4e..e4dd3a214034 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -450,7 +450,7 @@ static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb)
 static inline int neigh_hh_output(const struct hh_cache *hh, struct sk_buff *skb)
 {
         unsigned int seq;
-        int hh_len;
+        unsigned int hh_len;
 
         do {
                 seq = read_seqbegin(&hh->hh_lock);
@@ -459,7 +459,7 @@ static inline int neigh_hh_output(const struct hh_cache *hh, struct sk_buff *skb
                         /* this is inlined by gcc */
                         memcpy(skb->data - HH_DATA_MOD, hh->hh_data, HH_DATA_MOD);
                 } else {
-                        int hh_alen = HH_DATA_ALIGN(hh_len);
+                        unsigned int hh_alen = HH_DATA_ALIGN(hh_len);
 
                         memcpy(skb->data - hh_alen, hh->hh_data, hh_alen);
                 }