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Commit f13b5468 authored by Li RongQing's avatar Li RongQing Committed by David S. Miller
Browse files

tun: not use hardcoded mask value 



0x3ff in tun_hashfn is mask of TUN_NUM_FLOW_ENTRIES, instead
of hardcode, define a macro to setup the relationship with
TUN_NUM_FLOW_ENTRIES

Signed-off-by: default avatarLi RongQing <lirongqing@baidu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 039b1d5e

drivers/net/tun.c

+2 −1
Original line number Diff line number Diff line
@@ -200,6 +200,7 @@ struct tun_flow_entry { 
};



#define TUN_NUM_FLOW_ENTRIES 1024

#define TUN_MASK_FLOW_ENTRIES (TUN_NUM_FLOW_ENTRIES - 1)



struct tun_prog {

	struct rcu_head rcu;
@@ -406,7 +407,7 @@ static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val) 


static inline u32 tun_hashfn(u32 rxhash)

{

	return rxhash & 0x3ff;

	return rxhash & TUN_MASK_FLOW_ENTRIES;

}



static struct tun_flow_entry *tun_flow_find(struct hlist_head *head, u32 rxhash)