Revert "ipv4: tcp: dont cache unconfirmed intput dst"
This reverts commit c074da2810c118b3812f32d6754bd9ead2f169e7.
This change has several unwanted side effects:
1) Sockets will cache the DST_NOCACHE route in sk->sk_rx_dst and we'll
thus never create a real cached route.
2) All TCP traffic will use DST_NOCACHE and never use the routing
cache at all.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 33aabd4..1781dc6 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1673,7 +1673,7 @@
}
EXPORT_SYMBOL(tcp_v4_do_rcv);
-int tcp_v4_early_demux(struct sk_buff *skb, bool *no_dst_cache)
+int tcp_v4_early_demux(struct sk_buff *skb)
{
struct net *net = dev_net(skb->dev);
const struct iphdr *iph;
@@ -1719,8 +1719,6 @@
}
}
}
- } else {
- *no_dst_cache = true;
}
out_err: