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net/ipv4: swap flow ports when validating source
[ Upstream commit c69f114 ] When doing source address validation, the flowi4 struct used for fib_lookup should be in the reverse direction to the given skb. fl4_dport and fl4_sport returned by fib4_rules_early_flow_dissect should thus be swapped. Fixes: 5a847a6 ("net/ipv4: Initialize proto and ports in flow struct") Signed-off-by: Miao Wang <shankerwangmiao@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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