* [PATCH][net-next] tun: not use hardcoded mask value
@ 2018-08-03 7:50 Li RongQing
2018-08-04 20:15 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Li RongQing @ 2018-08-03 7:50 UTC (permalink / raw)
To: netdev
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>
---
drivers/net/tun.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 0a3134712652..2bbefe828670 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -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)
--
2.16.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH][net-next] tun: not use hardcoded mask value
2018-08-03 7:50 [PATCH][net-next] tun: not use hardcoded mask value Li RongQing
@ 2018-08-04 20:15 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2018-08-04 20:15 UTC (permalink / raw)
To: lirongqing; +Cc: netdev
From: Li RongQing <lirongqing@baidu.com>
Date: Fri, 3 Aug 2018 15:50:02 +0800
> 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>
Applied, thank you.
^ permalink raw reply [flat|nested] 2+ messages in thread
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