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: Li RongQing <lirongqing@baidu.com> Signed-off-by: David S. Miller <davem@davemloft.net>hifive-unleashed-5.1
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039b1d5e58
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f13b546847
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@ -200,6 +200,7 @@ struct tun_flow_entry {
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};
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};
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#define TUN_NUM_FLOW_ENTRIES 1024
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#define TUN_NUM_FLOW_ENTRIES 1024
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#define TUN_MASK_FLOW_ENTRIES (TUN_NUM_FLOW_ENTRIES - 1)
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struct tun_prog {
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struct tun_prog {
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struct rcu_head rcu;
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struct rcu_head rcu;
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@ -406,7 +407,7 @@ static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val)
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static inline u32 tun_hashfn(u32 rxhash)
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static inline u32 tun_hashfn(u32 rxhash)
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{
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{
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return rxhash & 0x3ff;
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return rxhash & TUN_MASK_FLOW_ENTRIES;
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}
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}
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static struct tun_flow_entry *tun_flow_find(struct hlist_head *head, u32 rxhash)
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static struct tun_flow_entry *tun_flow_find(struct hlist_head *head, u32 rxhash)
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