From: Tonghao Zhang <xiangxia.m....@gmail.com>
Upstream commit:
commit 515b65a4b99197ae062a795ab4de919e6d04be04
Author: Tonghao Zhang <xiangxia.m....@gmail.com>
Date: Fri Nov 1 22:23:50 2019 +0800
net: openvswitch: simplify the flow_hash
Simplify the code and remove the unnecessary BUILD_BUG_ON.
Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com>
Tested-by: Greg Rose <gvrose8...@gmail.com>
Acked-by: William Tu <u9012...@gmail.com>
Acked-by: Pravin B Shelar <pshe...@ovn.org>
Signed-off-by: David S. Miller <da...@davemloft.net>
Cc: Tonghao Zhang <xiangxia.m....@gmail.com>
Reviewed-by: Tonghao Zhang <xiangxia.m....@gmail.com>
Signed-off-by: Greg Rose <gvrose8...@gmail.com>
---
datapath/flow_table.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/datapath/flow_table.c b/datapath/flow_table.c
index 62d726ddd..7efaa8044 100644
--- a/datapath/flow_table.c
+++ b/datapath/flow_table.c
@@ -455,13 +455,10 @@ err_free_ti:
static u32 flow_hash(const struct sw_flow_key *key,
const struct sw_flow_key_range *range)
{
- int key_start = range->start;
- int key_end = range->end;
- const u32 *hash_key = (const u32 *)((const u8 *)key + key_start);
- int hash_u32s = (key_end - key_start) >> 2;
+ const u32 *hash_key = (const u32 *)((const u8 *)key + range->start);
/* Make sure number of hash bytes are multiple of u32. */
- BUILD_BUG_ON(sizeof(long) % sizeof(u32));
+ int hash_u32s = range_n_bytes(range) >> 2;
return jhash2(hash_key, hash_u32s, 0);
}
--
2.17.1
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