net: let flow have same hash in two directions

stable inclusion
from stable-v5.10.146
commit e90001e1dd96cb98e53c6dab6d657df09d919e96
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0VX

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e90001e1dd96cb98e53c6dab6d657df09d919e96



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[ Upstream commit 1e60cebf ]

using same source and destination ip/port for flow hash calculation
within the two directions.

Signed-off-by: zhang kai <zhangkaiheb@126.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 64ae13ed ("net: core: fix flow symmetric hash")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com>